भ रत सरक र Government of India व द य त म त र लय Ministry of Power उत तर क ष त र य व द य त सवमवत Northern Regional Power Committee

Transcription

1 भ रत सरक र Government of India व द य त म त र लय Ministry of Power उत तर क ष त र य व द य त सवमवत Northern Regional Power Committee स.-उक ष व स/प रच लन/106/01/2017/ द न क: स म : प रच लन समन य उपसवमवत क स स य To: As per list व षय: प रच लन समन य उपसवमवत क 138 ब ठक क क ययस च Subject: Agenda of 138 th OCC meeting. प रच लन समन य उप-सवमवत क 138 ब ठक क 10:30 बज स उ.क ष.व.स.सवच लय, नई द ल ल म आय वजत क ज एग उक त ब ठक क क यस च उत तर क ष त र य व द य त सवमवत क बस इट पर उपलब ध ह 138 th meeting of the Operation Co-ordination sub-committee will be held on , 10:30am at NRPC Secretariat, New Delhi. The agenda of this meeting has been up-loaded on the NRPC s web-site Members are requested to kindly intimate for any discrepancy /missing agenda points.they are requested to go through the related Agenda points and keep the status ready for discussion in the meeting -sd- (उप न द र क म र) अध श ष अभ य त ( प रच लन) 18-ए, शह ज त ससह म गय, कट ररय सर य, नई द ल ल फ न: फ क स: ई-म ल: seo-nrpc@nic.in बस ईट: 18-A, Shaheed Jeet Singh Marg, Katwaria Sarai, New Delhi Phone: Fax: e- mail: seo-nrpc@nic.in Website: 1

2 Agenda for the 13 th Meeting of the Operation Coordination Sub-Committee (OCC) of NRPC Date & time: at hrs. Venue: NRPC Secretariat, New Delhi 1. Confirmation of Minutes: The minutes of the 137 th OCC meeting held on and at New Delhi were issued vide letter of even number dated The sub-committee may discuss and confirm the Minutes. 2. Review of Grid operations of last month (July 2017): Frequency Profile: The detailed frequency particulars are enclosed at ANNEXURE -A Voltage Profile: The voltage variation at the important sub stations in the NR region is enclosed at ANNEXURE-B Long outage of the Grid Elements and Generating stations is enclosed at Annexure-C Anticipated vis-à-vis Actual Power Supply Position (Provisional) for July, Anticipated Power Supply Position v/s Actual (Provisional) Power Supply Position of Northern Region during the month of July, 2017 is as given below: State Delhi Haryana H.P. Punjab Rajasthan U.P. Uttarakhand Req/ Avl Anticipated Actual %age (MU/day) Variation Anticipated Actual %age (MW) Variation Req Avl Req Avl Req Avl Req Avl Req Avl Req Avl Req Avl As per above, it has been observed that there are much variations (i.e. > 5.0%) in the Anticipated vis-à-vis Actual Power Supply Position (Provisional) for the month of July, 2017 in terms of Energy requirement for HP, UP & Uttarakhand and in terms of Peak demand for Delhi, Haryana, HP, Rajasthan, UP & Uttarakhand. These states are requested to submit reasons for such variations in writing so that the same can be deliberated in the meeting 2

3 2.5 Power Supply Position: The Sub-Committee was informed that the provisional Power Supply Position the month of July, 2017 were available on CEA website. All SLDCs are requested to furnish the provisional and final power supply position in prescribed formats by 2 nd and 15 th day of the month respectively in compliance to the provision 5.3 of IEGC 2.6 Power Supply Position for NCR: NCR Planning Board (NCRPB) is closely monitoring the power supply position of National Capital Region. Monthly power supply position for NCR till the month of June, 2017 is placed on NRPC website. ( Members are requested to furnish the data on regular and time bound manner The NRLDC to make a detailed presentation on grid operation of last month 3. Maintenance Programme of Generating Units and Transmission Lines: 3.1. Maintenance Programme for Generating Units. The proposed maintenance programme for Generating Units for the month of September, 2017 will be discussed on at NRPC office, New Delhi Outage Programme for Transmission Elements. The proposed Outage programme of NLDC & NRLDC oversight transmission elements for the month of September, 2017 will be discussed on at NRPC office, New Delhi. 4. Planning of Grid Operation: 4.1 Anticipated Power Supply Position in Northern Region during September, 2017: September, 2017 State Anticipated Peak Demand Expected Peak Availability Surplus (+)/ Deficit (-) Anticipated Energy Requirement Expected Energy Availability Surplus (+)/ Deficit (-) (MW) (MW) (MW) % (MU/day) (MU/day) (MU/day) % Chandigarh Delhi Haryana H.P J&K Punjab Rajasthan U.P Uttarakhand Region

4 SLDCs are requested to inform their updated estimate of power supply position for September, 2017 and measures proposed to be taken to bridge the gap in availability as well to dispose of the surplus, if any, in the prescribed format. 5. Monitoring of schemes funded from PSDF(Agenda by NPC) The status of grant sanctioned from PSDF for the schemes in Northern Region ANNEXURE-D is enclosed with. Utilities are requested to expedite implementation of the schemes and submit information of physical as well as financial progress in the prescribed format by first week of every month on regular basis to Member Convener, PSDF Project Monitoring Group (AGM, NLDC and POSOCO) with a copy to NPC Division. 6. Information about variable charges of all the generating units in the Region. The variable charges for different generating units are available on the Merit Order Portal All utilities are requested to intimate if the process of Scheduling is being done as per Merit Order Despatch and in case of variations the reasons may be highlighted. 7. Sub-stations likely to be commissioned in next 6 months. The details /status of the elements of Power grid along with the associated downstream networks is enclosed at Annexure -E All the concerned States are requested to specifically update the status of the downstream network of the Power Grid upcoming Assets 8. Cleaning and Replacement of porcelain insulators: The updated status of cleaning and replacement of porcelain insulators as received till date is available on NRPC website. All utilities are again requested to submit the detailed status of Replacement of Porcelain Insulators carried out during outages taken during recent months. 9 Recommendation of Enquiry Committee for grid disturbances on 30 th July, 2012 & 31 st July, 2012: Discussions on implementation of recommendations pertaining to operational aspects made by the Enquiry Committee for grid disturbances on 30 th July, 2012 & 31 st July, 2012 are as under: 9.1 Healthiness of defense mechanism: Self- certification A. i) In the 27 th meeting of NRPC held on 30 th November, 2012 it was decided that all STUs would ensure settings of UFR and df/dt relays and load relief as per target. ii) Report of Mock exercise for healthiness of UFRs carried out by utilities themselves on quarterly basis is to be submitted to NRPC Secretariat and NRLDC. All utilities have been advised to certify specifically, in the report that All the UFRs are checked and found functional. Any discrepancy should be detailed upon and the time line for rectification of the same should also be intimated. 4

5 iii) iv) In the 31 st meeting of NRPC held on it was decided that the quarterly test report of UFR and df/dt would be uploaded on the website of respective SLDC. In the 136 th OCC meeting all utilities were informed that UFRs testing by the NRPC secretariat is in progress and were requested to update any change in the name of officers assigned for UFR testing, The report of the UFR testing for quarter ending June 2017 has been received from Himachal Pradesh, UP, BBMB, Rajasthan, DTL, Punjab and Haryana. PITCUL may submit the report of UFR testing for quarter ending June Also all utilities to update the contact details if not done till date. B. BBMB had informed that replacement of static relays by numerical relays at 7 substations (2 sub-stations in Punjab at Jamalpur & Sangrur and 5 stations in Haryana at Panipat, Dhulkot, Kurukshetra, Jagadhari & Hissar) by PSTCL and HVPNL was pending. 134 th OCC meeting: HVPNL representative had intimated that the LOA for procurement of 22 UFR relays has been placed. 136 th OCC meeting: HVPNL representative informed that relays will be replaced by Representative of PSTCL informed that the relays have been replaced however there were some issues pending regarding the setting which was being sorted out after consulting BBMB. 137 th OCC meeting: HVPNL representative informed that the relays will be replaced by Representative of PSTCL request that the pending issue to be resolved in 34 th PSC meeting scheduled to be held on The issue regarding setting stands discussed in the 34 th PSC meeting, PSTCL was advised that the settings as recommended by the OEM may be complied and the relay operation be analyzed after implementing the same. HVPNL & PSTCL to update progress achieved 9.2 Strengthening of Intra-State transmission system Recommendation of the Enquiry Committee: Intra-State transmission system needs to be planned and strengthened in a better way to avoid problems of frequent congestion. In the NRPC meeting held on 30 th November, 2012, it was decided that SLDCs should give half yearly feedback to STU regarding bottlenecks, constraints and overloading in the State transmission network for proper transmission planning. Accordingly all SLDCs were requested to submit advice regarding constraints, to their STUs, regularly at half yearly intervals i.e. on 1 st January and 1 st July of every year. 136 th OCC meeting: All the SLDCs were advised to submit the next half yearly feedback ending June 2017 with more details in line with the feedback given by NRLDC in the various OCC Meetings 5

6 137 th OCC meeting: DTL, HVPNL were again reminded to update the status specifically regarding the action taken/action plan of the STU on the feedback given by the SLDCs for the period ending December DTL & HVPNL are required to update the information. Further all the SLDCs were again advised to submit the next half yearly feedback ending June 2017 in detail, in line with the feedback given by NRLDC in the various OCC Meetings, to their STUs with a copy to the NRPC Secretariat Information from PSTCL stands received.all other utilities may update. 9.3 Installation of adequate static and dynamic reactive power compensators Based on the studies carried out by POWERGRID for identifying compensation required in intra-state network at 220 kv level, discussions held in the 29 th Meeting of NRPC and subsequent discussions, reactors were to be installed at 9 locations, out of which 6 have been installed. The updated status of remaining 3 reactors is as under: S.No. SUBSTATION MVAR Implementation by 1 HINDAUN 125 RVPNL Updated Status in 137 th OCC Expected by MANESAR 125 POWERGRID Expected by MERTA 125 RVPNL Expected by RVPNL & POWERGRID to update the status Study by POWERGRID for reactive compensation at 220 kv level: The proposal for installation of bus reactors 12 nos at 400 kv and 17 nos at 220 kv sub-stations was discussed in the 29 th meeting of NRPC held on 13 th September After deliberations, NRPC had approved installation of reactors at 400 kv sub-stations of POWERGRID and RVPNL. As regard 220 kv bus reactors, POWERGRID had stated that the requirement would be firmed up in consultation with the States. Subsequently, POWERGRID, vide dated had submitted report of the study. In this report, reactors at 13 locations at 220 kv levels and at 24 locations at 400 kv level had been proposed. The report was discussed in 34 th TCC/38 th NRPC meeting held on 24 th /25 th October, 2016 wherein Delhi had requested to review the system study for thier system. POWERGRID agreed for the same. Subject to review of requirement for Delhi, NRPC approved the report. In the 135 th OCC meeting, representative of Delhi informed that the report would be finalized shortly. 35 th TCC/39 th NRPC meeting held on decided that the report of the POWERGRID and the study by RVPNL to be referred to the Standing Committee on Power System Planning of NR. OCC advised Power Grid and RVPNL to take action in this regard. 6

7 136 th OCC meeting Representative of DTL informed that as per the second study conducted by POWERGRID the requirement of reactor for DTL has increased significantly which may not be in line with the actual requirement. Therefore, it was informed to OCC that DTL will again be conducting the study determining the requirement of the reactors. 137 th OCC meeting: DTL representative informed that they have planned to install the reactors as per the requirement arrived in their own study which was conducted by CPRI. DTL was requested to submit the plan for the same. Representative of PSTCL & RVPNL informed in the meeting that the minutes of Standing Committee meeting are still awaited. DTL, PSTCL & RVPNL may update the status All utilities are requested to submit the action plan regarding implementation of the reactive compensation as proposed in the study at the earliest. 10. System Protection Schemes (SPSs) in Northern Region: 10.1 SPS for Interruption of import by NR at 765 kv Agra (from WR). Review of SPS for 765 kv Agra-Gwalior line The revised SPS for meeting contingency of 765 kv Agra-Gwalior was approved in 32 nd TCC/36 th NRPC meeting held on 23 rd /24 th December, It was also agreed in the 36 th NRPC meeting that POWERGIRD would implement the revised scheme within 06 months after the receipt of the feeder details from the States. In the 129 th OCC POWERGRID stated that the scheme would be commissioned by th OCC had recommended that the cost of implementation of revised SPS for 765 kv Agra-Gwalior lines could be booked in any ongoing project/ work of Northern Region. In the 132 nd OCC meeting representative of POWERGID proposed that provision of AMC of the scheme for 05 years could also be included in the scope of the work for implementation of the revised scheme. Members agreed to the proposal of POWERGIRD. POWERGRID representative informed that they were waiting for NRPC approval in this regard. After detailed deliberation it was decided that keeping in view urgency of the work, POWERGRID should carry out tendering activities for timely implementation of the revised scheme. The recommendation of the OCC would be put up for concurrence of NRPC in next meeting. 133 rd OCC meeting: POWERGRID representative stated that tendering activities were in process. The POWERGRID representative submitted that as the tendering process takes time, the implementation would be done till August/September NRLDC representative stated that all out efforts should be made to complete the work before Paddy season, as per earlier schedule of implementation. 7

8 39 th meeting of NRPC held on approved the proposal given in the 129 th OCC meeting by POWERGRID for booking the cost of revised SPS including 05 years AMC in some other on-going project/work. Sub Committee stressed that in view of the criticality of 765 kv Agra-Gwalior line for NR, POWERGRID may commission the scheme as per the agreed schedule. POWERGRID had intimated that scheme would be commissioned by October, th OCC meeting: POWERGRID representative informed that the implementation of the scheme may be delayed by few weeks. However, OCC pursued POWERGRID to complete the same within the stipulated time. Power Grid to update the status 135 th OCC meeting: The concern was expressed about no progress made by the state utilities so far regarding mapping of feeders in SCADA, identified for the SPS load relief. OCC advised all concerned utilities in the meeting to take action in this regard at the earliest and inform the action taken. 136 th OCC meeting: The Sub-Committee was informed that mapping of feeders in SCADA, identified for SPS load has been implemented by HVPNL and partly by Rajasthan. Other utilities were requested to implement the same at the earliest. 137 th OCC meeting: Utilities were again requested for mapping of feeders in SCADA at the earliest. All utilities concerned may update Mock Testing of SPS for 765 kv Agra-Gwalior line POWERGRID representative had stated that in view of recent multiple tripping at Agra Sub Station, the Mock Testing of SPS for 765 kv Agra-Gwalior line was required. After deliberation it was decided that the same may be done on from 7:00 to 11: th OCC meeting: POWERGRID informed that the testing was successfully performed and some modifications have been done in the logic. OCC asked POWERGRID to submit the report of the testing and the changed logic to the NRPC sect. 137 th OCC meeting: POWERGRID representative submitted the information regarding the changed logic. It was requested to POWERGRID to submit the same along with the detailed report of the testing done POWERGRID has submitted the report. POWERGRID may update regarding the changed logic. 8

9 10.2 SPS for ICTs at 765 kv Unnao sub-station: A discussion was held on in NRPC secretariat with the officers from UPRVUNL in the presence of officers from NRLDC, POWERGRID and NRPC sect. UPRVUNL was briefed about the basic philosophy along with the hardware requirement of the System Protection Scheme (SPS) for evacuation of Anpara-D generation. It was agreed that UPRVUNL along with UP SLDC would prepare the SPS for safe power evacuation of Anpara-D. Further the scheme would be submitted to the OCC for approval. Thereafter, the matter was under discussion in meetings of OCC without much progress. 121 st OCC meeting It was decided that, the scheme was to be implemented by UPPTCL. 34 th TCC/38 th NRPC meeting: UPPTCL informed that LOA would be placed by and scheme would be implemented in next 3 months 135 th OCC meeting: UPPTCL representative informed that the implementation of the scheme has started and would be completed by th OCC meeting: UPPTCL informed that implementation of the scheme will be done by th OCC meeting: UPPTCL informed that implementation of the scheme will be done by UPPTCL may update 10.3 SPS for Kawai Kalisindh - Chhabra generation complex: SPS for Kawai-Kalisindh-Chhabra generation complex was recommended in 122 nd OCC meeting held on 22 nd April, RVPNL, vide dated has confirmed that the SPS for Kawai-Kalisindh-Chhabra generation complex has been put into operation. However, it is observed that the automatic load shedding recommended in part (c) of the scheme has not been implemented by RRVPNL. The scheme was discussed in 34 th TCC/38 th NRPC meeting held on 24 th /25 th October, 2016 wherein RRVPNL stated that feeders have been identified and the scheme would be completed by March th OCC meeting: Rajasthan representative intimated that, the part of the scheme related to load shedding would be completed by March,

10 131 st OCC meeting: Rajasthan representative intimated that load shedding part of the scheme has been installed on trial basis for 100 MW load. Mock testing of the SPS would be done for the shortlisted load and if successful the scheme would be extended for complete 700 MW load. OCC advised RVPNL to implement the SPS scheme for the identified load at the earliest and submit the report to NRLDC and NRPC Secretariat. 133 rd OCC meeting: Rajasthan representative submitted that the administrative approval for implementation of the Automatic Load shedding for identified feeders have been obtained and the NIT for the work would be floated soon. Regarding revision in SPS scheme after commissioning of Chhabra stage - II (Unit 5), RVPNL representative stated that the same is under consideration and information in this regard would be submitted shortly. 134 th OCC meeting: Rajasthan representative intimated that the scheme has been revised upon the commissioning of Chhabra stage II. On the query regarding quantum of backing down of generation with N-1 contingency of 400 kv Kawai-Anta Ckt.- 1 & 2 and 765 kv Anta-Phagi Ckt.- 1 & 2, representative of RRVPNL intimated that generation will be reduced to 65 % of the installed capacity. OCC suggested RRVPNL that the reduction in generation up to 60 % of the installed capacity in the above mentioned contingency may be considered. RRVPNL agreed to review the scheme. 135 th OCC meeting: RVPNL representative intimated that the issue was being discussed with the Generation Company. As per the letter received from CE PP&D RRVPNL a meeting was held on in light of the issue of revision in existing SPS scheme for Kawai, Kalisindh & Chhabra complex due to addition of Chhabra SCTPS Unit 5. In the meeting representatives of the four generating companies opined that technically it is not possible to reduce the generation up to 60%. They insisted that backing down may not be reduced beyond 65% because it may result in instability. After deliberation it was decided that 65% backing down of generation may be considered for SPS at Kawai, Kalisindh, Chhabra & Chhabra Super Critical Complex. Till the new scheme is implemented the existing approved scheme will stay in operation. 136 th OCC meeting: Members were of the view that this complex being very important for the power supply of Rajasthan, the recent incident of complete generation loss of the complex needs to be avoided. Keeping in view the importance of the complex, the members advised Rajasthan to go forward with their proposed backing down for the time being. However, it was cited in the meeting that as per new regulations prepared by CERC, the generators will be required to back down their generation up to 55%. 10

11 137 th OCC meeting: Rajasthan representative informed that NIT would be floated in July 2017 and the scheme will be implemented by Dec RVPNL to update 10.4 SPS for Lalitpur Generating station: 3x660 MW LPGCL Power Station is connected to the Grid through 2xS/C 765 kv Lalitpur- Agra (Fatehabad) lines and 220 kv D/C lines to Lalitpur and Jhansi. 3 rd PASG meeting, 11 th July 2017: In the meeting it was observed that UP has put in place some System Protection Scheme (SPS) at Lalitpur for taking care of tripping of 765 kv Lalitpur - Fatehabad lines though the scheme has neither been put up for approval in NRPC nor the details have been shared with NRLDC. It was decided to bring the implemented scheme for approval to the OCC forum. 137 th OCC meeting: In the meeting, OCC was briefed about the implemented scheme at Lalitpur TPS. OCC after due deliberation suggested some modifications in the already implemented SPS scheme and advised LPGCL to discuss the same with UP in a separate meeting. Representative of LPGCL was requested to take up the issue on priority basis and also to brief the committee about the same before implementing. LPGCL and UP may update. 11. System Study for Capacitor Requirement in NR for the year & In 34 th TCC and 38 th NRPC meetings, held on 24 th & 25 th Oct, 2016 the matter was discussed and it was decided that LOA should not be cancelled and the study should be carried out for the year and through CPRI. It was also decided that all the States would submit the data by for carrying out study for the period Subsequently, the data would be submitted for carrying out study for rd OCC meeting: Sub-Committee was apprised that data for had been received from all the utilities and the same has already been sent to CPRI. Based on the data submitted by the utilities CPRI carried out the capacitor study. The report submitted by CPRI for is available on NRPC website ( 135th OCC meeting: Sub Committee was informed that the proposal of installation of capacitor by Haryana, Punjab, Uttar Pradesh and J&K through PSDF funding was approved in the 35 th TCC/39 th NRPC meeting held on 1 st & 2 nd May, 2017 as per recommendation of OCC and 11

12 the same has been referred to the Convener, Techno Economic Sub Group & Consultant NLDC for PSDF Funding on Utilities noted the information. 136 th OCC meeting: All the utilities were requested to submit the comments if any to the proposed capacitor requirement in the report by CPRI. Only Rajasthan has submitted the comments. 137 th OCC meeting: Utilities were asked to submit the action plan for the implementation of the requirement as recommended in the report. Comments on the report were received from RVPNL and DTL and the same were discussed with CPRI. After the discussion, CPRI has submitted an amended report (uploaded on NRPC website) wherein clarification is provided for Table 11 of the draft report, in which, recommendations are made regarding the quantum of additional capacitor bank needed to be installed along with those that needs to be switched ON from the existing ones. Utilities are requested to kindly go through the report and submit their comments if any to the same. Members of the committee are requested to confirm their acceptance to the report of the study conducted by CPRI for processing the bill raised by CPRI. Utilities are requested to submit the action plan for the implementation of the requirement as recommended in the report. 12. Status of data through Automatic Meter Reading (AMR) In the 13 th NRPC meeting held on 27 th June 2009, scheme of Automatic Meter Reading from Interface Meters in Northern Region was approved. NRLDC and POWERGRID were to submit the joint status report of AMR at the end of every month. In the 34 th TCC meeting, held on 24 th Oct, 2016, NRLDC stated that out of 1235 interface meters, data from 973 meters was being received and being regularly used by NRLDC for 764 interface meters. POWERGRID informed that the data from all the meters will be available by January TCC and NRPC expressed concern over tardy progress of the implementation of AMR. The progress of installing AMR is being regularly mentioned in OCC meetings. 133 rd OCC meeting: POWERGRID updated that the work would be completed by April, th OCC meeting: POWERGRID representative raised their concern over lack of support from site in matters regarding AMR implementation. He informed that site personnel are downloading SEM data manually by removing wiring and in many case not plugging it in, despite of provision for downloading the data manually even when meter is plugged in. The issue has also been communicated to the site, but still not resolved. 12

13 136 th OCC meeting: The joint report of NRLDC & POWERGRID was submitted. Sub-Committee had advised all the transmission and generation Utilities to co-operate with the vendor to resolve the issues regarding ORU removal for manual downloading of data from SEMs. 137 th OCC meeting: The Status was updated by POWERGRID & NRLDC POWERGRID & NRLDC to update status Further keeping in view the prospective plan of 5 minute scheduling Power Grid may review the compatibility of the AMR in line with the same. Power Grid may update 13. Planning, procurement and deployment of Emergency Restoration System. The issue was discussed in the 33 rd meeting of NRPC held on and it was suggested that CEA should evolve guidelines regarding ERS. Later, Secretary (Power), GoI vide letter dated addressed to Chief Secretaries of all the States, had requested to issue directions to transmission utilities / transmission licensees to procure adequate number of Emergency Restoration Systems. The guidelines formulated by CEA for planning, procurement and deployment of Emergency Restoration System were also enclosed with that letter. The matter was discussed in 34 th TCC and 38 th NRPC meetings, held on 24 th & 25 th Oct, 2016 and the subsequent meetings. The latest status as updated by the members is as under: DTL:- Order had been placed for 02 nos. of ERS. Delivery started. PSTCL: - Order has been placed. Supply expected by October, UPPTCL: - 02 nos. of ERS have been received. RRVPNL: - Will not be procuring ERS. HVPNL: - PTCUL- HPSEBL BBMB :- J&K- In place of ERS, spare towers would be procured worth Rs Two Crore. PO issued in this regard NIT placed. Supply expected in 3 month. No progress Partner states have agreed to provide the ERS as and when required by BBMB. Order has been placed for 2 nos. ERS. All utilities to update 13

14 14. LVRT issues of wind/solar generation As per the CERC order dated issued in Petition No. 420/MP/2014 wherein CERC has directed that LVRT should be implemented for all wind turbines (except Stall Types) commissioned before having installed capacity equal to or more than 500 KW. Further as per the CEA Technical Standard for connectivity to the Grid (Amend.) Reg.2013 (sub clause (3) of Clause B 2 ) of the station connected to the grid 06 months after publication of these regulations (i.e ) shall have the LVRT capability as depicted in the sub-clause. As LVRT are not installed on many of the wind turbines in State of Rajasthan, the issue is being regularly raised in the various meetings of NRPC without any result. 137 th OCC meeting: RVPNL representative informed that no progress has been made even after regularly pursuing for the same. Sub-Committee advised RVPNL to submit a petition to the State Regulatory Commission for the non-compliance of the regulations. Subsequently a letter from the NRPC Secretariat has also been written to Chairman RRVPNL on the issue. RVPNL to update 15. RGMO/FGMO compliance by generators in the region ( Agenda based on letter by CERC) CERC (IEGC) 5 th amendment of IEGC dated provides that all Coal/lignite based thermal generating units of 200 MW and above, Open Cycle Gas Turbine/Combined Cycle generating stations having gas turbines of capacity more than 50 MW each and all hydro units of 25 MW and above should provide RGMO/FGMO response. Further, it has been provided at Regulation 5.2(h) that RLDCs/SLDCs should not schedule the generating station or unit(s) thereof beyond ex-bus generation corresponding to 100% of the installed capacity of the generating station or unit(s) thereof and that the generating station shall not resort to Valve Wide Open operation of units so that primary response is ensured. CERC in its letter dated has directed to obtain the status of availability of RGMO/FGMO response from the generators (ISGS as well as intra-state generators) in the region. 136 th OCC meeting: All utilities were requested to submit the status of actual response being provided by generators under the primary response. SLDCs were asked to provide the region report by

15 137 th OCC meeting: All SLDCs were again requested to submit the detailed status of actual response being provided by generators under the primary response by The latest status of RGMO/FGMO available with NRPC is attached in ANNEXURE F. All the Utilities are requested to check and update this status. Further NRLDC may update the response received in the last month from the available RGMO. 16. Contingent situation experienced during the month (Monsoon scenario) Northern region has been experiencing highest demand during Jun-Sept (Monsoon) and this year also NR touched its highest demand in the range of ~55-56 GW and energy consumption of more than ~1200 MUs during the June-July 17. Operational planning required and its preparedness has been discussed in many previous OCC/TCC meetings. All the credible contingencies have been discussed in number of meetings and proposed solution has also been deliberated for safe and secure grid operation. Despite continuous effort and interactions, some of the issues that have already been flagged are still causing emergent situation in the Grid during this high demand period. All the stakeholders were sensitized regarding the emergent conditions through various communications yet Grid discipline were violated number of times. Major issues experienced during these months are as: a. Hydro generation outages on silt Major hydro generation of NR i.e. Baspa-Karcham-Jhakri-Rampur complex (~3500 MW), Salal HEP (690 MW), Bairasuil (180 MW) and other hydro were frequently out on high silt during pre-monsoon & Monsoon and resulted in contingent situation in the grid. On 18 th and 19 th July 2017 large hydro stations went under forced outage due to high silt. On 18 th July 2017, 800kV HVDC Champa-Kurukshetra pole-1 (Inter-regional link with WR) tripped on DC over current. This resulted in reduced import capability of NR and subsequent revision of ATC/TTC. With above, there was outage of the order of 5000MW in NR. On 19 th July 2017, 765kV Fatehabad (UP)-Lalitpur TPS ckt-2 went under forced outage. The Hydro generation went under outage due to silt; the generation at Lalitpur could not be increased due to N-1 contingency of other circuit which could have resulted into tripping of entire Lalitpur TPS. NRLDC requested UP for early revival of above circuit. Further to above, on 30 th, 31 st July and 1 st August 2017 also large Hydro stations like Karcham, N. Jhakri, Rampur, Baspa, Dehar, Bairasuil, Salal, Parbati-3 comprising more than 4500MW of generation went under forced outage. At times, contingency of 7000MW was observed during above event. 15

16 Reports dated 24 th July 2017 and 9 th August 2017 on above event has also been issued and enclosed in Annex-1A & 1B. Action taken: i) Informed all the utilities so that they can manage their portfolio to avoid any Grid indiscipline. ii) Increased internal generation of NR (Ancillary were triggered, Costly generation also brought on bar) iii) States were also asked to increased their generation iv) Reduction of Generation/Tripping of Units shall be as per protocol and shall be in a staggered manner to the extent possible. Lesson learnt: i) Maintaining Reserves in the system ii) Silt Forecasting iii) Handling deviation from schedule by hydro dominant States iv) Fuel availability at generating station v) Handling further contingencies Outages of hydro on silt during monsoon is known phenomenon and operational planning to counteract such situation has been discussed in many previous OCC/TCC/Special meeting. Hydro generation outage on silt of last five year is enclosed in Annex-2. Learning experiences again emphasize on strict adherence to action plan that was decided and agreed during the meetings. Assistance from both Load and Generation side are requisite during such scenario. Planned and staggered outage of hydro generation on silt is equally important as per agreed protocol between the generators. b. Coal shortages at some of the stations during above condition. During this high demand period, it has been experienced that some of the thermal generating could not generate as per requirement due to coal shortages. Such coal shortages have not been reported by any entity during summer/monsoon preparedness meeting or OCC meetings. Kawai TPS Unit #2 was out from 4 th June to 22 nd June 2017 on Coal shortage, Anpara-C unit#1 was out from 21 st May to 5 th Jul 2017 and Jhajjar (APCPL) Unit #2 of 500 MW was also out from 2 nd Jul to 19 th Jul 2017 due to some coal problem as reported by respective utility. In view of high demand period of NR, adequate coal stock should be maintained to keep the thermal units on bar as per requirement. Members may please discuss. 16

17 c. Overarching agreement for harnessing RE generation in Northern Region Government of India has set up a target of harnessing 175GW of renewable energy by During high injection of RE, some states are forced to back down large amount of State thermal generation, high quantum of ISGS power and also imports under LTA/MTOA in order to maintain load-generation balance. Concept of regional cooperation can be extended for optimum harnessing of RE generation without endangering grid security. Similar framework is prevalent in some states in the US and in some countries in Europe, wherein RE generators are allowed to generate as per resource availability and the cost of balancing the variability and uncertainty is socialized across all market participants. With a view not to lose this Real time opportunity by empowering SLDC operators of the surplus/deficit states to exchange power as required and to cut short the time required for entering into the power purchase agreements, it was suggested in Southern Region (SR) that a generalized overarching agreement be entered among states. Implementation of such scheme would be advantageous under following circumstances: Sudden variations in RE generation - difference in forecast and actual. Sudden variations in load Load forecasting is under development in most of states. Sudden unit outages. Sudden transmission outages. Decision between bringing back the unit v/s utilization of reserve available in other states. Using reserves available in other states. Backing down of units as per MOD if the power under this scheme is cheaper. Sudden changes in weather. Members may discuss about developing such framework for Northern region. d. Transmission element long outages Northern Region has been experiencing tower collapse/line breakdown during summer/monsoon on thunder storm since last three to four years. Action plan to avoid such outages has been discussed in OCC/TCC/Special meeting and has been communicated through various letters also. MoP has also issued guideline to procure at least two ERS for quick restoration for every state. In this year also transmission lines went under breakdown on tower collapse and are still out thereby, affecting the reliability of the system and aggravating constraints in meeting high demand reliably. List of such line is tabulated below: 17

18 S. No Transmission Element HVDC Mohindergarh- Mundra Pole 2 HVDC Mohindergarh- Mundra Pole 1 400kV Paricha-Orai(UP) ckt.1 400kV Mainpuri(PG)- Paricha(UP) ckt.1 400kV Jhatikara-Bamnoli ckt.1 400kV Bawana-Mundka ckt1 400kV Bawana-Mundka ckt2 400kV CLP Jhajjar- Dhanonda ckt1 400kV CLP Jhajjar- Dhanonda ckt2 Owner APL APL UPPTCL UPPTCL DTL DTL DTL HVPNL HVPNL kV Orai-Kanpur UPPTCL kV Kishenpur(PG)- Ramban(JK) 220kV Kishenpur(PG)- Mirbazar(JK) PDD JK PDD JK Outage Date & Time & 12: & 12: & 13: & 13: & 20: & 09: & 09: & 15: & 15: & 13: & 06: & 16:55 Reason of outage Tower collapsed (revived on & 01:57) Tower collapsed (revived on & 04:36) Tower collapsed Tower collapsed Dead end tower collapsed at Bamnoli end Fire below 400kV tower no. 116 Manually opened on emergency (Fire below 400kV tower no. 116) Tower No. 12 to 17 collapsed Tower No. 12 to 17 collapsed Tower damaged Tower collapsed Tower collapsed During this high demand period accompanied with bad weather condition wherein the system is already under stress, the outage of multiple elements in same area further reduces the reliability/security of the system. Constituents shall provide the report along with the preventive and remedial actions taken for revival of lines out on tower collapse. HVDC Mundra-Mahindergarh Pole 1 and 2 were revived on ERS in two weeks time. Utilities may like to discuss action plan for revival of other mentioned lines. Member may discuss. 17. Over-drawl by NR entities Over drawl/ under drawl by all the state control area has been continuously reported through fax/messages. It has been observed that most of the states are deviating from its 18

19 schedule either over drawing or under drawing from the grid. As already discussed in many previous OCC/TCC meetings, states are advised to follow its schedule strictly to maintain the Grid discipline and security of the system. As all are aware, Northern region is experiencing high demand during monsoon, various generating units (especially outage of hydro units on silt) remain under forced outage. Therefore, all are requested to follow the schedule and plan & monitor the Grid conditions to take the fast action in case of any eventualities. Deviations of all the states from 20July-5Aug 2017 are shown below. 19

20 It could be observed from above, that most of the states are deviating from their schedule. The issue has been almost regularly discussed in OCC meetings and other forums. Constituents may share the remedial measures to arrest such large and almost continued deviation from the schedule. 18. Over drawl by the states even during low frequency condition i) Over-drawl by Uttar Pradesh control area: The quantum of over drawl was quite high (at times going above 500 MW), that too in continuous manner, stretching more than few hours. Very large changes in drawl at hourly boundaries, resulting in sustained grid operation at low frequency. High over drawl of UP state control area results in high over drawl of the region as a whole from neighboring region. ii) Over drawl issues of HP state control area from the grid has been flagged and discussed at different fora as well as through direct communications. Despite all the effort, HP state control area over drawl is still continuing. Operational data for last few days is given below. It is evident that the state of Himachal Pradesh is excessively overdrawing from the grid and at the same time there is power sale by the state through Short Term Open Access (STOA). Date Over drawl (MUs) Sale of power through STOA(MUs) It is evident from the pattern that such over drawl is almost continuous and at times causing low frequency as well as congestion. Therefore, there is still vast scope for improvement in demand/generation forecasting and portfolio management of the state. Such over drawl becomes severe during the outage of large hydro stations in NR due to high silt conditions. 20

21 Appropriate measures suggested to avoid such deviation are as: a) Proper forecasting of load and planning for load management b) Increasing the internal generation within state control area c) Making power purchases from the market through bilateral Power Exchange transactions to cover for the shortfall. d) Re-starting of units under reserve shutdown at state as well as Inter-state level through appropriate transactions. Members may please discuss. 19. Reliability Issues ATC/TTC assessment is a continuous process and shall be computed on regularly basis by each state control area as per CERC guideline. NRLDC has also been assessing the TTC/ATC based on the information available at NRLDC and enclosed in Annex-3. Major reliability constraints faced during the month are as follows: a. Punjab: Punjab load remained in the range of ~ GW and N-1 non-compliance was observed at Amritsar, Ludhiana & Makhu. With the commissioning of 3 rd 500MVA ICT at Dhuri, N-1 constraint is relieved. From supply reliability point of view 500MVA ICT at Rajpura shall be revived at the earliest. b. Uttar Pradesh: Uttar Pradesh load remained in the range of ~17-18 GW. N-1 noncompliance has been observed at 400/220kV ICTs of Mainpuri, Moradabad, Agra (UP), Meerut, Obra, Sultanpur, Azamgarh, Lucknow (PG), Lucknow (UP), Gorakhpur (PG) etc. In addition, evacuation constraints of Anpara-D, Lalitpur TPS, Paricha TPS and Bara TPS under N-1/N-1-1 compliance has been continuously observed and reported. c. Haryana: Haryana load remained in range of ~8-9 GW and N-1 non-compliance was been observed at Kaithal, Gurgaon. Kirori ICTs also become N-1 non-compliant when load of Haryana is more than 9.5 GW. d. Delhi: Delhi load remained ~5GW for most of the time. When ATC was violated N-1 non-compliance was observed at Mundka and Bamnoli. e. Rajasthan: 3*315MVA and 1*500MVA ICT have been commissioned at Akal but they remain highly loaded due to high wind generation at Akal. N-1 non-compliance was observed during last month which is further expected to rise during coming months when wind generation is expected to increase. As wind injection increases, voltage becomes extremely low at Akal and Barmer. Members may please discuss. 21

22 20. HVDC Mundra-MahendergarhBipole tripping and SPS operation An incident of HVDC Bipole tripping of ±800kV HVDC Mundra-Mahendergarh occurred at 12:29hrs on 24-July The tripping occurred dudes to DC linefaultattowerno.936 and340.64kmfrommundrahvdcterminal (as per relay indication).subsequent to this, APL team had also done the OLT (Open Line Test) for both the pole from Mundra end. However the test could not succeed, hence it can be concluded that nature of fault is permanent. Later on, tower collapsed was found in the line due to heavy flood in Gujarat area. Antecedent power flow on HVDC Mundra-Mahendergarh Bipole was ~1500MW. The tripping of Bi pole was captured in PMU plot of Hissar voltage and many transients were captured in plot. The transients indicate the DC line faults which might 22

23 have appeared on line before finally tripping of the line. There were 3 transients in each second interval and the duration between each transient is approx. 300ms Fig2. PMU plot of Hissar phase voltage at 12:29hrs Due to this tripping there was rise in power flow on all the important WR-NR links. The plots of power flow are given below: Due to the blocking of HVDC bipole the SPS operating criterion was satisfied and SPS of HVDC Mundra-Mahendergarh operated. 23

24 As per SPS design, In Case of Loss of both Poles of HVDC Mundra Mohindergarh : In Northern Region:Blocking of Bipole AND Reduction in power injection at Mahendergarh by more than 1250 MW and upto 2000 MW : Shed 1400 MW load identified in Northern Region within 500 ms (including all signal propagation / breaker opening time delay) Haryana: 600 MW, Punjab:200 MW, Rajasthan: 200 MW, UP: 200 MW, Delhi: 200 MW. SPS logic and planned load loss details is attached as Annex-4 However in actual operation load loss of approx 700 MW took place in northern region. SCADA graph of NR demand met is as below: SPS operation details received from Rajasthan state only. Actual load loss reported was 182MW against planned load loss of 200MW. 24

25 Major issues: Frequent auto restart attempt setting of HVDC Mundra-Mahendergarh Commutation failure setting of HVDC Mundra-Mahendergarh Less relief (~50%) for HVDC Mundra-Mahendergarh SPS operation (700MW against total planned load loss of 1400MW) SPS operation details received from Rajasthan only, Non-reporting of SPS operation details by the constituents Utilities may kindly share the details and discuss 21. SPS operation details and its reporting to NRPC/NRLDC: System Protection Schemes (SPS) are important scheme for credible contingency in the grid and it has to be operated correctly. Following are major issues observed during real time SPS operation: SPS mal-operation SPS non-operation Less Load Relief Less generation backing down Non radial Feeders 25

26 Despite continuous follow up, analysis of SPS operation details and reporting of SPS operation from the constituents is still poor. Approved sample format was already circulated and various OCC meeting. The same is once again attached as Annex-5 To improve the reporting and analysis of SPS related operations, the following is proposed: S.No. Reporting of SPS details within 3days of SPS operation. Submission of monthly SPS operation details for a month by 5 th date of the following month. A format for monthly submission of information is as below: Date (dd-mmmyy) Time (in hrs) Format for Monthly SPS operation: Event Description SPS logic Planned operation Actual operation Relief occurred (MW) Remarks In addition to above, a regular agenda of SPS operation may also be included in OCC meetings. Utilities may kindly look into the issues and share the SPS operation, mal-operation/nonoperation details for the month of July Moreover, logging of SPS related signals in SCADA has been already approved in TCC/NRPC meeting. Members may kindly update the status; expedite the reporting of relevant SPS signals in SCADA. The above SPS signal status may also be sent to SLDCs/NRLDC for monitoring at state/regional level. 22. Frequent forced outages of transmission elements The following transmission elements were under frequent forced outages during the month of July 17: S. No. Element Name No. of forced outages Utility 1 400kV Bareilly(UP)-Unnao(UP) ckt-1 4 UP 2 800kV HVDC Champa(WR) - Kurukshetra(NR) Pole-1 3 POWERGRID 3 400kV Alaknanda HEP - Muzaffarnagar(UP) ckt-2 3 UP/Alaknanda/ Vishnuprayag 4 400kV Alaknanda HEP - Vishnuprayag HEP ckt-2 3 UP/Alaknanda 5 400kVAligarh(UP)-Mainpuri 765(UP) ckt-2 3 UP 6 220kV NAPS(NPC)-Simbholi(UP) 3 UP/NPCIL 7 400kV Uri II(NHPC)-Wagoora(PG) 3 The complete details are attached at Annex-6. POWERGRID/ NHPC 26

27 It seems from the PMU data that in many cases of single line to ground fault, the auto-re closure has not operated. The frequent outages of such elements affect the reliability and security of the grid. Hence, Utilities are requested to look into such frequent outages and share the remedial measures taken/being taken in this respect. Members may discuss. 23. Multiple element tripping events in Northern region in the month of July-2017: A total of 8 grid events occurred in the month of July Out of these, 4 no. of events were of GD-1 category. The preliminary report of all the events have been issued from NRLDC. A list of all these events along with the status of details received is attached at Annex-7. It could be seen that a fault clearance of the order of 3000ms has been observed which is very much exceeding the standard value of 100ms. Further, despite persistent discussions/followup in various OCC/PCC meetings, the compliance of the regulations is still much below to the desired level. Members may take expeditious actions to avoid such tripping in future and discuss the same. Moreover, utilities may impress upon all concerned for providing the Preliminary Report, DR/EL & Detailed Report of the events in line with the regulations. Members may like to discuss. 24. Details of tripping of Inter-Regional lines from Northern Region for July 17: A total of 26 inter-regional lines tripping within a month occurred in the month of July 17.The list is attached at Annex-8. The status of receipt of preliminary reports, DR/EL within 24hrs of the event and fault clearing time as per PMU data has also been mentioned in the table. The non-receipt of DR/EL & preliminary report within 24hrs of the event is in violation of various regulations. As per regulations, all the utilities shall furnish the DR/EL, flag details & preliminary report to RLDC/RPC within 24hrs of the event. They shall also furnish the detailed investigation report within 7 days of the event if fault clearance time is higher than mandated by CEA (Grid Standard) Regulations. It could be observed from attached table that not all information regarding the tripping is received from the utilities. The summary of the attached table is as below: Preliminary Report and DR/EL received within 24hrs: 10 events DR/EL received after 24hrs: 0 events Fault clearance time(based on PMU data) more than CEA grid standard: 10 events Line tripping without any fault (based on PMU data): 8 events Members may please note and advise the concerned for taking corrective action to avoid such tripping as well as timely submission of the information. 27

28 25. Frequency response characteristic: Two FRC based event have occurred since last OCC meeting. Description of the events is as given below: Table: S. No. 1 2 Event Date 21- Jul Jul-17 Time Starting End Event Description Frequency Frequency Δf (in hrs) (in Hz) (in Hz) On , at 21:26 Hrs, Generation loss of about 21:26hrs 1031 MW Occurred at Korba STPS due to tripping of evacuation lines. On , at 10:08:50 Hrs Generation loss of about :08hrs MW Occurred at Teesta III &Dikchu due to tripping of evacuation path The Hon ble CERC approved procedure has already been shared with all concerned during previous OCC meetings. FRC observed for each state control area for the events is tabulated below: State Name FRC for events since last OCC meeting FRC calculation for Apr-2017 onward 21-Jul Jul-17 Average Median PUNJAB 16% 17% 20% 17% HARYANA 10% 25% 25% 20% RAJASTAN -24% 29% 15% 4% DELHI 13% -9% 32% 28% UTTAR PRADESH 9% 27% 35% 17% UTTARAKHAND 32% 7% 11% 13% CHANDIGARH -35% 25% 1% 1% HIMACHAL PRADESH -6% 0% -4% -1% JAMMU & KASHMIR -8% -9% 4% 1% NR 12% 16% 15% 15% In the above table, Average and Median value of FRC calculation of total 12 events (FY ) is calculated. FRC calculation of all ISGS station for the events since last OCC meeting along with median and average value of total 12 events is tabulated below: 28

29 State Name FRC for events since last OCC meeting FRC calculation for Apr-2017 onward 21-Jul Jul-17 Average Median Dadri-1 7% 51% 45% 47% Dadri -2 50% -8% 22% 27% Ropar 4% 19% 34% 25% Jhajjar 26% 8% 26% 25% Rihand-1 15% 116% 27% 22% Sh. Cement 15% NA 8% 14% Obra 8% -23% 6% 9% Anpara C 15% 36% 13% 7% ROSA 19% NA 9% 7% Rihand-2 8% 4% 3% 6% RAPS-B 18% NA 6% 6% CLP Jhajjar 6% 12% 4% 4% Anta* NA NA 3% 3% Badarpur 3% 0% 3% 3% Suratgarh 6% 12% 0% 3% Tanda 0% NA 2% 2% Anpara 3% 5% 1% 2% Rihand-3 NA NA -2% 1% NAPS -14% 5% 4% 1% RAPS-C* NA NA 2% 1% Rajwest -1% 15% 0% 1% Panipat -1% 2% 1% 0% Dadri-Gas* NA NA -9% 0% Unchahar 1% 2% 0% 0% Auraiya* NA NA 0% 0% 29

30 Khedar -6% NA 0% 0% Paricha -3% -6% -2% 0% Singrauli 0% NA -6% -1% KTPS 0% 18% -6% -1% Faridabad* NA NA -10% -7% Yamuna Nagar* NA NA Chabra* NA NA Data not available Data not available Data not available Data not available State Name FRC for events since last OCC meeting FRC calculation for Apr-2017 onward 21-Jul Jul-17 Average Median Dhauliganga 23% 55% 57% 45% Karcham Wangtoo 40% 55% 66% 44% Chamera-3* NA NA 21% 20% Chamera-1 2% 0% 29% 14% Jhakri 12% 73% 17% 12% Parbati-3* NA NA 9% 10% Dulhasti 6% 2% 15% 3% Bairasiul* NA NA 2% 2% Koldam HEP* NA NA 10% 2% Bhakra -1% NA 2% 2% Salal 4% 3% 2% 1% Uri-1* NA NA 2% 1% Dehar 5% 2% -6% 1% Tanakpur* NA NA 6% 1% Chamera-2* NA NA 4% 0% Uri-2-9% -9% -3% 0% Sewa-II* NA NA 11% 0% Rampur 5% 91% 11% 0% Tehri 5% 1% 14% 0% 30

31 Koteswar* NA NA 4% 0% Budhil* NA NA 14% 0% VishnuPrayag* NA NA 1% 0% Pong* NA NA -2% -1% Malana-2* NA NA Data not available Data not available AD Hydro* NA NA Data not available Data not available In line with the decisions taken during various OCC meetings, the time and date of the FRC events were ed to respective utilities. Utilities may kindly submit the FRC of their control areas and reason of poor response. ISGS generators may kindly also submit the FRC response details along with reason of poor response. 26. Monitoring of state wise reserves in the SCADA by SLDCs: Reserve for ISGS (Inter State Generating Stations) is being monitored by NRLDC/ NLDC control room through SCADA display. Snapshot of SCADA display is as below: This display is helpful for dispatching Ancillary Services and maintaining reserves calculation in real time. Such displays are also helpful for SLDCs to monitor real time reserves available in its control area and it would further help in reducing the deviation from schedule, handling the contingency and weather extremities (Load Crash, Generation outage due to Silt or 31

32 forced tripping, Fog related tripping and load handling etc). As per Hon ble CERC orders, adequate reserves (at least equivalent to 50% of the largest unit in the system) shall be maintained by each state control area. ON Bar DC less (minus) schedule is the reserve available for state generating plant. All the SLDCs are requested to kindly keep reserve and monitor the reserve through SCADA display for state generators and share the display key with NRLDC. 27. Load Forecasting by states and improvement in forecast error: After consistent follow up in various OCC/ TCC meeting, now all the Northern Region states have started sending Day Ahead load forecast through online file transfer (FTP). The RMSE (Root Mean Square Error) is being calculated by NRLDC on daily basis and same is being reported back to constituents for visualization of error & further improvement. The State wise RMSE for the duration of 11 th July 2017 to 03 rd Aug 2017 is tabulated below: Date NR Punjab Haryana Rajastha n Delhi UP Uttarakh and HP J&K Chandigarh

33 Average Median Maximum Average RMSE (Root Mean Square Error) RMSE Error (in %) As can be seen from the above table and graph, high value of RMSE has observed for all the NR states. Following could be the reasons for high RMSE: Non-consideration of weather parameter (e.g. Temperature, Rainfall, Humidity etc). Input from historical data and load pattern. Consideration of change in roistering of load. Consideration of extreme weather conditions. Consideration of special events like festivals, holidays, weekends etc Seasonal variation in loads. 33

34 However members may like to discuss the ways to reduce the error to international standard of less than 2%. 28. Mapping of UFR and df/dt: The present status of UFR &df/dt is tabulated below: States UFR df/dt Remarks J&K No No UP Yes Yes Following not provided: Feeder-wise planned load relief. Complete telemetry of feeders. Alternate feeders. Total planned relief. Total actual relief. Haryana Yes Yes Following not provided: Feeder wise planned load relief. Complete telemetry of feeders. Alternate feeders. Total planned relief. Total actual relief. Delhi Yes No Data is not in approved format. It seems Delhi islanding scheme data is mapped. HP Yes Yes Following not provided: Complete telemetry of feeders. Complete Alternate feeders. Uttarakhand No No Punjab Yes Yes Following not provided: Complete telemetry of feeders. Alternate feeders. Total actual relief. Rajasthan No Yes Following not provided: Alternate feeders. Total planned relief. The UFR and df/dt mapping is mandatory as per Hon ble CERC regulation. The issue has been discussed in various OCC, NRPC-TCC meetings. However, it could be seen that the State UFR, df/dt displays are not exactly as per the approved format. 137 th OCC meeting: MS NRPC once again reiterated that mapping of UFR has to be done in the SCADA of SLDC & NRLDC for better visibility of relay status and feeder load relief and emphasized upon the importance of digital breaker status of feeders in such defense schemes. 136 th OCC meeting: It was discussed that in addition to the SCADA mapping, States should provide the following information regarding the UFR, df/dt relays installed at their respective substations: 34

35 Source of frequency measurement for UFR, df/dt relay viz. positive sequence, phaseto-neutral, phase-to-phase. Computational time for measurement of frequency, rate of change of frequency in UFR, df/dt relays respectively. State utilities are requested to submit the above information at the earliest and correct, provide the SCADA UFR, df/dt displays as per the comments. Members may discuss. 29. Projected Demand and Generation Data for 3rd Quarter of Demand and Generation projection for Q3_17-18 w.r.t Northern region constituents is tabulated for ratification. Constituents may like to go through the data and suggest accordingly. Generation projection for next quarter is attached as Annex-9. DEMAND FORECAST USING PAST 3 YEARS DATA (Oct Dec 2017) Average Average Average Projected Demand for (Oct Dec 2017) before normalizati on Chandigarh Data given by DICs Delhi 4,083 3,979 4,270 4, Haryana 6,879 7,025 7,128 7,259 Himachal Pradesh 1,371 1,396 1,387 1,400 Jammu & Kashmir 2,008 2,056 2,014 2,031 Punjab 6,395 6,487 6,741 6,886 Rajasthan 9,835 9,785 9,677 9,608 10,119 Uttar Pradesh 11,825 13,209 14,498 15,851 18,000 Uttarakhand 1,769 1,898 1,871 1,948 Comments As per data given by Delhi As per data given by Rajasthan As per data given by U.P. 35

36 30. Deviation Violation The deviations from the schedule are to be minimized. Some of the violations brought out by the Regulations are given below: Violation of regulation 7 (1) of CERC (Deviation Settlement and related matters) Regulation 2014: (Limit on volume of deviation) Table-1: Period: to S. No. State O/D: Violation in Over drawl U/D: Violation in Under drawl Average No of Blocks per day 1 Uttar Pradesh 2 Rajasthan 3 Uttarakhand 4 Himachal Pradesh 5 Punjab 6 Jammu & Kashmir 7 Haryana 8 Delhi 9 Chandigarh O/D 43 U/D 20 O/D 31 U/D 14 O/D 31 U/D 17 O/D 30 U/D 10 O/D 22 U/D 21 O/D 15 U/D 34 O/D 12 U/D 32 O/D 7 U/D 6 O/D 4 U/D 0 36

37 Remarks: Violation is considered while Deviation from Schedule of a Utility is 150 MW or 12% of Schedule whichever is lower. Violation of regulation 7 (10) of CERC (Deviation Settlement and related matters) Regulation 2014: (Sustained deviation from schedule in one direction). Period: 01-July- 17 to 23- July-17 Chandigarh HP PDD J&K UK Delhi Rajasthan Haryana Punjab UP Total No. of Violations It has been observed that total no. of violations were higher for small states i.e. whose load size is also small. All such states are to be suggested to plan more precisely and avoid such violations. 31. Issue of continuous over drawl from the grid In the last few months, over drawl from the grid by Rajasthan, HP and UP state control area (Annexure-G) have been reported. It is also observed that in some cases this over drawl by the state control area is during the period when grid frequency is below IEGC band and sometimes also accompanied by sale of power by the state through Short-Term Open Access (STOA). During this period of high demand, wherein the condition is further aggravated by the frequent outage of hydro generation on silt, this issue of over drawl from the grid, demands serious attention and action at the highest level for ensuring the security of the grid. Members may deliberate and direct all the concerned utilities to take immediate corrective measures. 32. Model & Parameter details of units to be commissioned as per various CEA /CERC regulations AT the time of commissioning of units the details of the dynamic parameter of generator, exciter, stabilizer, and governor should be submitted to NRLDC. The governor and Power System Stabilizer actions shall be properly tested and tuned and a report on the results of above testing including PSS tuning, frequency response shall be shared with NRLDC/NRPC before the units are declared under commercial operation. If there are any changes to model parameters for Exciter, Governor & stabilizer that also be intimated. Members may take note.nrldc to give details of units who have not furnished parameters as required 37

38 33. Non Compliance of SLDC Directions (Agenda of DTL) As per the letter dated (ANNEXURE H) SLDC DTL has intimated the NON - COMPLAINCE of SLDC directions by BRPL.BRPL has been heavily over drawing from the grid and SLDC has issued a notice vide this letter.. Members to discuss. 34. Operational Analysis of Hydro Power Stations Forum of Load Dispatchers (FOLD) and POSOCO have prepared a report Report on Operational Analysis for Optimization of Hydro Resources & facilitating Renewable Integration in India. The report was released by the Hon ble MoS (Independent charge) for Power, Coal, New& Renewable Energy and Mines in the meeting of Forum of Regulators (FOR) on An agenda note on this report is attached in ANNEXURE I NRLDC/ NLDC is to make a presentation on the issue. 35. Phase mismatch issue with BBMB and interconnected stations During the discussions held in 34 th PSC meeting, it was reported that phase sequence nomenclature of BBMB at the interconnection with other utilities, do not match with that of the other utility. It was observed that, this problem leads to a lot of confusion during charging of interconnected lines and also to other coordination problem while reporting any issue. While deliberating it was observed that, the main issue was primarily of the nomenclature of phases at BBMB end and based on the discussion it seems that the nomenclature of phases at BBMB end has inadvertently been marked as mentioned below: Phase of the grid R Phase Y Phase B Phase Corresponding nomenclature of the phase at BBMB end B Phase R Phase Y Phase In view of the above BBMB was asked to rectify the nomenclature issue at their end. BBMB may update the status. 38

39 36. Intimation regarding Real Time Curtailment in Inter-State Open Access transactions(agenda by PSTCL) As per the decision of Hon'ble Punjab State Electricity Regulatory Commission (PSERC) given vide order dated in Petition No. 47 of 2015:- In case of curtailment of open access transactions, the open access customer is to be charged for the excess power drawn above the admissible drawl as per Regulation 31 (1) (a) of PSERC Open Access Regulations, 2011, (instead of penalty proposed by PSPCL in Commercial Circular No. 29 of 2015 and 8 of 2016). The admissible drawl and over-drawl in such cases is to be worked out in line with the provisions of PSERC (terms & conditions for intra state open access) (5 th amendment) Regulations, 2015, which have been made applicable w.e.f Certification of such an event along with duration of curtailment is to be done by SLDC. Efficient communication system on part of SLDC is required to ensure speedy delivery of information to the Users/Open Access consumers regarding curtailment in approved schedule by Nodal RLDC under Force Majeure conditions in the bilateral Inter-state Open Access transactions. So far, Punjab SLDC has not been able to pass the information regarding curtailment in Inter- State Bilateral transactions to the open access customers, as the same are not always intimated by NRLDC to SLDC. There are only 2-3 instances in past 2 years, when such communication regarding curtailment in Inter-State Bilateral transactions has been received from NRLDC, due to which this office has been unable to comply with the directives of Hon ble PSERC. The matter was taken up with NRLDC vide SLDC letter dated , however, no action in this regard has been taken by NRLDC till date. Further, as SLDC has to certify Curtailments in Open Access transactions w.e.f onwards (along with duration of curtailment), concerned officer of NRLDC was contacted seeking details of curtailments done by NRLDC in Inter-state bilateral transactions w.e.f. June-15 onwards. However, it was intimated that no such record pertaining to day-wise/ duration-wise curtailment is being maintained at NRLDC. NRLDC only have refund reports in respect of open access applicants, which contains detail of monthly refund of STOA charges (for both curtailment as well as surrender of power), from which day-wise/ durationwise curtailments cannot be segregated. It is therefore requested that suitable mechanism may be evolved by NRLDC for informing SLDCs regarding the curtailments in Inter-State Bilateral transactions on regular basis without any delay. Members may discuss 39

40 POWERGRID CORPORATION OF INDIA LTD. NRLDC, New Delhi Frequency Profile During Jul-2017 Date % of Time Frequency Frequency (Hz) Average Standard FVI <49.2 <49.7 <49.8 <49.9 < >50.10 >50.20 >50.50 Maximum Minimum Frequency Deviation Freq Time Freq Time Max Min Average

41 Voltage Deviation in %age - July KV Stations Day Rihand Gorakhpur Bareilly(PG) Kanpur Dadri Ballabhgarh Bawana Bassi Hissar Moga Abdullapur Nalagarh Kishenpur Wagoora Amritsar Kashipur Hamirpur Rishikesh

42 Voltage Deviation in %age - July KV Stations Day Fatehpur Balia Moga Agra Bhiwani Unnao Lucknow Meerut Jhatikaraareilly 765 k Anta Phagi

43 A. Details of Transmission Elements Outage:- S.No Element Name Type Voltage Leve Owner Outage Expected time 1 Auraiya 315 MVA ICT 2 ICT 400/220 kv PGCIL : Oil leakage in transformer. 2 Makhu 80 MVAR B/Reactor 1 Bus Reactor 400 kv PSEB : Y-Ph. ten delta test results not within limits 3 Merta 50 MVAR (400kV) B/Reactor 1 Bus Construction of new element --- for dismantling this 50 MVAR Bus 400 kv RRVPNL : Reactor Reactor(this reactor shall be shifted to 400kv Bhilwara) and Diverson of Line --- shifting / raising of height between TL due to 4 Hisar(BBMB)-Sangrur(BBMB) 1 Line 220 kv BBMB : electrification of Rohatak-Bhatinda section of railway by BBMB ( Deposit work of Rail Vikas Nigam.2. shifting / raising of height between TL , Reason 5 Hisar(BBMB)-Sangrur(BBMB) 2 Line 220 kv BBMB : Diverson of Line --- shifting / raising of height between TL due to electrification of Rohatak-Bhatinda section of railway by BBMB ( Deposit work of Rail Vikas Nigam.2. shifting / raising of height between TL , & due to four lining of Kaithal-Rajsthan Border Road.extended upto FSC of Pampore-1 at Kishnpr FSC 220 kv PGCIL :00 No requirement Line length has reduced after LILO work completion as on date 7 FSC of Pampore-2 at Kishnpr FSC 220 kv PGCIL :00 No requirement Line length has reduced after LILO work completion as on date kv (3*110) 330 MVAR Line Reactor Line (Non-Switchable) of Unnao ckt 1 at Reactor 765 kv UPPTCL :19 Available Due to not completion of 765 kv Line Anpara D 9 Bamnauli(DTL)-Jhatikara(PG) 1 Line 400 kv DTL : Tower damage (First dead end tower from Bamnauli S/S) / Ckt-II charge through ERS tower kV Bawana-Mundka 1 Line 400 kv DTL : Fire below 400kV tower no. 116, in the line kV Bawana-Mundka 2 Line 400 kv DTL : Mainpuri(PG)-Paricha(UPPTCL) -2 Line 400 kv UPPTCL : Tower collapsed 13 Orai 400-Paricha TPS-1 Line 400 kv UPPTCL : Tower collapsed 14 Dhanonda-Jhajjar CLP-1 Line 400 kv HVPNL : Tower No. 12 to 17 collapsed. 15 Dhanonda-Jhajjar CLP-2 Line 400 kv HVPNL : Tower No. 12 to 17 collapsed Manually Opened due to Fire below 400kV tower no. 116, in the line leading to Insulator damage and Tower bend 16 Kalisindh 315 MVA ICT-1 ICT 18 Rajpura (400kV) 500 MVA ICT 3 ICT 400/220 kv 400/220 kv RRVPNL : Buchholz relay operated. PGCIL : Bucholz relay operated / Detail inspection work. 19 Sarnath 50 MVAR B/R 20 Wagoora 50 MVAR B/R Bus Reactor Bus Reactor 400 kv UPPTCL : kv PGCIL : MVAR B/R is being installed in place of it which is expected to be commissioned by No requirement as on date Failure of Reactor Take out due to low voltage. 21 FACT at BLB in Knp-BLB Line FACTS 400 kv PGCIL :20 Y-Phase current imbalance 22 FSC (40%) of Fatehpur-I at MainpurI(PG) FSC 400 kv PGCIL :38 B-Ph spark gas cable fail 23 FSC (40%) of Fatehpur-II at MainpurI(PG) FSC 400 kv PGCIL :13 B-ph Capacitor unbalance FSC ( 50% ) of Koteshwar Pool -1 at Meerut (PG) FSC ( 50% ) of Koteshwar Pool -2 at Meerut (PG) FSC 400 kv PGCIL :00 DC source MCB trip FSC 400 kv PGCIL :22 Fire in Y-ph unit 26 Kishenpur(PG)-Ramban(JK) Line 220 kv PDD JK :55 27 Kishenpur(PG)-Mirbazar(JK) Line 220 kv PDD JK :55 28 FACT at BLB in Knp-BLB Line FACTS 400 kv PGCIL :20 Y-Phase current imbalance 29 FSC (40%) of Fatehpur-I at MainpurI(PG) FSC 400 kv PGCIL :38 B-Ph spark gas cable fail 30 FSC (40%) of Fatehpur-II at MainpurI(PG) FSC 400 kv PGCIL :13 B-ph Capacitor unbalance FSC ( 50% ) of Koteshwar Pool -1 at Meerut (PG) FSC ( 50% ) of Koteshwar Pool -2 at Meerut (PG) FSC 400 kv PGCIL :00 DC source MCB trip FSC 400 kv PGCIL :22 Fire in Y-ph unit 33 Kishenpur(PG)-Ramban(JK) Line 220 kv PDD JK :55 34 Kishenpur(PG)-Mirbazar(JK) Line 220 kv PDD JK :55 Tower collapsed Tower collapsed at tower No. 82 from Kishenpur end as informed by SLDC Jammu Tower collapsed Tower collapsed at tower No. 82 from Kishenpur end as informed by SLDC Jammu Tower collapsed Tower collapsed at tower No. 82 from Kishenpur end as informed by SLDC Jammu Tower collapsed Tower collapsed at tower No. 82 from Kishenpur end as informed by SLDC Jammu

44 S.No Station Location Owner Unit No Capacity 1 RAPS-A RAJASTHAN NPC Badarpur TPS DELHI NTPC Badarpur TPS DELHI NTPC Badarpur TPS DELHI NTPC Bhakra-L HPS HP BBMB Reason(s) Subject to regulatory clearance Order of NGT for Environmental protection Order of NGT for Environmental protection Order of NGT for Environmental protection Replacement of Generator Shaft Date Time Expected Revival date : : : : : Obra TPS UP UPRVUNL R & M work :44-7 Dehar HPS HP BBMB Rotor Earth Fault : Giral (IPP) LTPS RAJASTHAN RRVUNL Bad materials leakage : Giral (IPP) LTPS RAJASTHAN RRVUNL Boiler tube leakage : Paricha TPS UP UPRVUNL Boiler tube leakage :16-11 Bara PPGCL TPS UP Jaypee Rotor Earth Fault :47 1 week of Sept. 12 Harduaganj-C TPS UP UPRVUNL Generator Fault :02-13 Bara PPGCL TPS UP Jaypee Rotor Earth Fault 28/05/2017 1:35 1 week of Aug. Outage

45 Sl. Name of State/Entity No Name of Entity Name of Scheme POWER SYSTEM DEVELOPMENT FUND STATUS OF IMPLEMENTATION Date of Sanction Accepted Cost (Crs) Grant Approved (Crs) Date of release of 1st installment Completion schedule as per DPR (Months) Revised schedule (as committed on ) Award Status (in Crs) Committed (on ) award amount Awarded amount on date Funds disbursment status (Crs) Total Grant Fund Released (in Crs) Present Status 1 UPPTCL Installation of Capacitors and FSC. 11-May Mar Dec Entity intimated that on account of location change revision in the scheme is required. Inspection Pending. UPPTCL Renovation and Upgradation of protection system of substations. 11-May Mar Dec Uttar Pradesh UPPTCL Renovation and Upgradation of protection system of substations. 17-Mar UPPTCL Reconductoring of 11 Nos of 132kV Lines of the state network of UPPTCL for Relieving Congestion 16-May RRVPNL Renovation and Upgradation of protection system of substations 31-Dec Mar Jun Project cost reduced to 39 Crs. Rajasthan RRVPNL Installation of Bus Reactors 31-Dec Mar Jun RRVPNL Smart Operation Mamgement System (STOMS) 19-May Reactor reached at GSSMerta.Dismanteling work has been completed. Erection work in progress at Hindaun s/s. Reactor not reached. RRVPNL Communication Backbone "Smart Transmission Network & Asset Management System " 22-May Delhi DTL Renovation and Upgradation of Protection System 17-Mar Nov LoA for Rs.7 Crores issued. 4 Uttrakhand PTCUL Renovation and Upgradation of Protection System 17-Mar Nov intuts rcvd from entities\ptcul\psdf_review_meeting_ docx 5 PSTCL Bus bar protection 17-Mar Punjab PSTCL 6 Haryana HVPNL Provision of second DC Source at 220KV & 132KV Grid Sub Station Detailed Project Report Smart Grid Project Gurgaon City Fist Phase DLF Sub Station Area 2-Jan New Tenders are to be floated 2-Jan NIT under hold 0 7 PDD-J&K Jammu & Kashmir PDD-J&K 8 Himachal Pradesh HPSEBL Renovation and Upgradation of protection system of substations in Jammu Renovation and Upgradation of protection system of substations in Kashmir Renovation and Upgradation of Protection System 28-Oct Mar Jan May Jun LoA issued intuts rcvd from entities\j&k\psdf_review meeting_ _annexure-i - srinagar.docx 9 PGCIL BNC-AGRA 10-Mar CPSU RECTPCL & PGCIL 11kV feeder monitoring 10-Mar PGCIL URTDSM Scheme 31-Dec Oct Jun Under completion DVC Renovation and Upgradation of the protection and control system of Ramgarh Sub Station. 2-Jan May intuts rcvd from entities\dvc\psdf_review meeting_ _annexure-i DVC Ramgarh Ss.docx 10 NRPC NRPC Study Program on the integration of renewable energy resources 16-May Mar Completed annexure B.xlsx Schme wise status

46 PROGRESS REPORT UP TO 25th JULY 2017 Rs. in Crore ~ ~ rt q;y cxr<r ~ ~*t-~ Wffif ~It-~ C<l«Current year &nl' "- 3lT.,«.!f.t. IDmf (m<r17 Expen. Cumml Progress of Construction Completion Tgt. ~ Ji" (~ (;q;) ~ trrt'lifot $ q;y c;rrn (~) ~ ~ ~ Actual ~ Cumml ;r.;rc: upto prevo Jffli (1cfi' ~ c::rrh Remarks I Constraints & assistance r;rr<:!t1 SI. No. Name of the Trans line Length Goll Cost ~r.:r 8ft'JT (17-18) ~fdt Rm7r required. Exp. till month up to Latest (CKM) BoD (Appd.) C!7"R7. Locs. Stubs Tower Strng. prevo Year B.E. (Jun'17) Approved prevo Appl. IAnt. Ant.! (17-18) (no) Selling Erect. (ckl17) Schedule Mar'17(Pr month A CI. ovisional) (Jun'17) (no.) (no.) 1.9 Transmission System Strengthening in Indian System for Transfer of Power from Mangdcchhu Hydroelectric Proj, in BHUTAN. 326 Mar'16 80S r Jan'IS Jan'IS KV D/C Jagmeling - 'Alipurduar line (Q) (india Side) * Forest clearance awaited in Assam portion. criticallproposal submitted) Critical S 89 Jan' IS /\Ilernatc arrangements being. made for L'olllpki ioll (through L'ontigency malching wilh Ueneration.) HVDe Bipole link betwecn \Vestern Region (Raigarh, Chattisgarh) and southern Region 1.10 (Pugalur, TM) - North Trichur (Kerala) May' Nov'19 Nov'19 Scheme-I : Raigerh-Pugalur 6000 MW HVDC System All tower Packages awarded. Work under KV Raigarh (HVDC Stn.) - Pugalur Nov'19 progress. Huge forest involvement in WR (HVDC Stn.) HVDC Bipole link * portion Green Energy Corridore ISTS - Part-D 1266 May' May'19 May' KV ole Ajmer (new) - Bikat:cr line May'19 I K V ole Bikaner - Moga (PG) line May' LILO of 01 ckt of 400KV Bhadla (RVPN) - Award placed in Dec'16. Engg. & survey May'19 Bikaner (RVPN) ole line at Bikaner (NEW) under progress NORTHERN REGION July'IOI Northern Regional System Strengthening May' Jun'17 Jul'17 PROJECT COMPLETED. Scheme- XVI L1LO of both ckt of Kishenpur - Wagoora 400KV DIC line at Wanpoh Mar' Sep'13 Line commissioned in Sep' KV ole Kishcnpur - New Wanpoh lime Jul'1 7 Line commissioned in Jul' 17. : Northern Regional System Strengthening Scheme - XXIV 294 Nov' 1l! Mar'I Jun'17 Sep'17 TI.-. D.,.,.."", A,.., ~")

47 ~ SL No. mot ~ q;r iim Name of the Trans line 2.2. I 1400KV DIe Dchradun-Abdullapur line (Q) KV D/C Dulhasti - Kishenpur line (Q) Single 1 ckt strung. ~ (~) Length (CKM) PROGRESS REPORT UP TO 25th JULY 2017 &n.'ff.,tf.!t. MT4Rf of (~ ~~ Gol I BoD Appl. I Cost (Appd.) IAnt. Rs. in Crare ~~"'~ ~~T ~ ilf'qij ~ iiiiff -::---' , ~, Current vear ;;;l~ ~ *t ""'~ ~ 'MftCf. "~ " J ~ 17 I Expen, : Cumm :", regress of CO "";':".'ztion Completion Tgt, i ~ ~ Actual ~ ''' T-' --r -._ ' Cumml iwrl' upto prevo ~ (1Cfi '~ G ',"' i. I Remarks I Constraint,s,; assistance req uired. Exp, till (17-18) month upto ~ro:r i/1'tdr ~q=;-~'f"'i' row, Lat~st r;rfljt/ I prev. Year B;:. (Jun' 1 7) prevo Locs. Stubs 7~)\I 'e r Slrng. 1,\ pp ro Ved QT:F('[ Mar'17(Pr (I 18) month (no.) Sellmg Erect. (ckm) Schedule ovisional) (Jun' I 7) (no.) (no.) ;/111./ Act. 01 loc. in Saharanpur under severe ROW. Sep'17 IDelay in tree cultinl), by forest deptt in Uttrakhand affected strin gi ng. Severe ROW at 02 locs. in Doda Distt. Sep'17 /since beginning. State adlllll. help required ((1 resolved ROW iss ue. 2.3 IStrengthening Scheme in Northern Region 34 Oct' A Oct'14 I Sep' 17 I S/stn. cxtn balance. expected by Sep' ILILO of 220KV D/C Jullandhur-Hamirpur line.. at Hamirpur (PG) Feb'IS Loop out charged in Dcc. ' 13. Loop in charged in Feb' I 5 (19 Ckm) 2.4 Transmission System Associated with RAPP 7 & 8 - Part-A. 90 Mar' Mar'15.Il11'17 IPROJECT COMPLETED. 2: KV D/C RAPP - Kota line luI'! 7 ILine ready for commisisoning in.lul' Northern Region System Strengthening Scheme-XXX 634 Feb'l41 Mar'I S Feh'IS Feh'I8 400KV SIC Singrauli - Allahabad line (section of I Singrauli-Allahabad line (50 Km) to be strung on.. existing 400KV D/C tower from Singrauli end) Feb'18 Work under progress. ROW at Singrau li end. 2_ KV D/C Allahabad - Kanpur line Oct', 7 SJtutory clearancc awaited. 2.6 Northern Region System Strengthening Scheme -XXXII 532 Feb'I41 Mar' Feb'18 Sep'17 I Sub station extn. ant. by Sep' KV D/C Panehkula - Patiala line 2_6.1 1(10 Km Multi-ekt towers in forest area near Panchkula) Apr'16 I Line colllmissioned in Apr' 16. 2_ KV D/C Lucknow - Kanpur line May'17 I Line commissioned in May'l I LILO of 400KV D/C Dadri - Malerkotla line at I 50 Kalthal Milr'17 I Linc commissioned in Milr'l 7. LILO of 0 1 ekt of 400K V D/C RAPP - Kankroli 2.6:4 l1ine at Chittorgarh (RR VPNL). (15Km Multi-ekt & 3 Km DiC) Oet'16 I Line commissioned in Oet'l Transmission System associated With Tehri Pump Storage Plant (PSP) 2 7 I 1400KV SIC Tehri Gen. - Tehrj Pooling Station.. (Q) Jan' Oct'I7 1\1ar'I8 I Gen. Project delaycd (now ant. by Scp'19). Work slowcd-down to the extent possible Mar'l 8 I. to match generation..

48 ~ resolve PROGRESS REPORT UP TO 25th JULY 20~7 Rs. in Crore mnft ~ rt. q;y &n< ~ ~ c#i't t;ntcft W:mf Ma-Cf &n< Current year ~ m:r!f.t. " (;!T11(f (m<l'17 Expen. Cumml Progress of Construction Completion Tgt..,j- ~ (~) (lq;) 131~",<'" Actual ~ ~ t!wicrr ~ q;y i!m (~) ~ ~ CTCl( Cumml ~ m (1Cfi F0f Remarks I Constraints"" assistance upto p~ev. r;rc=<:tt/ SI. No. Name of the Trans line Length Goll Cost ~r.r?1fm ~r.:r R!TffJT required. Exp. till (17-18) month upto Latest C!TFr'[ (CKM) BoD (Appd.) B.E. (Jun'1 7) Locs. S/ubs Tower Strng. Approved prevo Year prevo A(lpi. Ant.! IAnt. (17-18) (no ) Erect. (ckm) Schedule Mar'17(Pr month Selling Act. ovisional) (Jun' 17) (no.) (no.) Charging of Tehri Pooling - Meerut765KY line Mar'IS 2.8 Transmission System associated with Kishanganga HEI' 313 Jan'151 Mar'I7 Work slowed-down to the extent possible to match generation Mar'I8 Mar'I8 Kishanganga HEP now ant. by ;'\Iov' 17. Work affected due to disturbance l!l Kashmir since Jul'16 & slow process \ K Y D/C Kishanganga - Amargarh line Iul'17 Nov'17 resolve compensation issue. State/MoP help required. All efforts shall be made to complete line matching with (;en. (ant. by Nov' 17). Critical Work affected due. to disturbance in KY D/C Kishanganga - Wagoora line lis 60 Mar'18 Mar'IS Kashmir since Jul'16 & slow proct:ss to compensation issue. State/MoP help required. Critical 2.9 Northern Region System Strengthening Scheme -XXXIV 171 Mar'I Jol'17 Sep'17 Work under progress. S~\ac ROW LILO of Agra - Bharatpur 220K Y SIC lina at Sep'17 problem in 6 Kms area ncar i\gra end. i\gra (l'g) State admll. help req uired LILO of Gladni - Hiranagar 220KV SIC lina at Sambi! (PG) L1LO of 0 1 ckt of Parbati PS - i\mritsar 400KV D/C line at.lallandhar (PG) Creation of KV S/Stn. in NCT of Delhi during 12th Plan Period (Part-A) Jun'1 6 Line commissioned in Jun' Feb'17 Line collul1issioned in Feb' ,"Iar' lsi Mar'I Jun'I9 Jun'I9 LILO of both ckt of Bawana - Mandola 400K V Award placed. Engg. 111 progress D/C line at Rajgha.t (Multi Ckt tower with Jun'.19 Corrunissioning matching with S/sln. (SIS twinihtls Cond.) land hand-over in Dec'16).. L1LO of one ckt of Bamnauli - lattikalan Award placed. Engg. 111 progress KY D/C line at Dwarka-I (with twinlhtls Sep'I8 Commissioning matching with S/stn. Cond.) (S/stn. land handed-over in Aug' 16)..., Creation of 400/220KV SIS tn. in!'lct of Compln. Seh - 26 month from date of May'iS Oct'I8 Oct'18 Delhi during 12th Plan Period (Part-BI) land acq. (land acquired in Aug'16). --_... _--

49 Name PROGRESS REPORT UP TO 25th JULY 2017 Rs. in Crare ~ ~rtq;r~ ~ ~'*r~ ~ M'a-<r ~ C urrent year ~ " 3fI.~.!f.t MTmr (mt'17 Expen. C umml Progress of Construction Completion Tgt. ~ #i' (~ (1cfi) ~ Actual ~ Cumml iwic upto prevo J1Tci (=!Cfi r;{'0lt./ of the Trans line Length Gol I Cost Exp. till (17-18) month upto CfTFc'[ (CKM) BoD (Appd.) Lacs. Stubs Tower So'ng. Approved prevo Year B.E. (Jun' 17) prevo Ant.!' A pp!. IAnt. (17-18) (no) Selling Erect. (ckm) Schedu le Mar'17(Pr month Ael. (no.) (no.) ovisional) (Jun'17) ~ ~ ~q;ril'm ~) ~ ~.. ~ Cl'CR' Remarks I Constraints & assistance SI. No. o. ~r.:r 8ftdT ~~ Fc!7ffJT Latest requi red.. Award placed. Engg. ttl progress. LILO of both ckt of Bamnauli - Sal11aypur Commissioning matching ",ith S/stn. S/s tn KV D/C line at Tughlakabad (with twin Oct' IR land acquired in AlI f!' 16. HTLS Cond.) M!~ o r portion in for est. Ckal'ance required to start of work Transmission System Associated with RAPP Gen. project delayed (now ant, by 360 Jul' l n Nov'I7 Nov'I7 7 & 8 - Part - B.,Ju n'19). 400KV DIC Kota - Jaipur (South) line (part of RAPP-Jaipur (S) 400KV D/C line with Nov' I7 one ckt LILO at Kota) Transmission System fo r Solar Power Park a t Bhadla, Rajasthan. 402 JuI' , Jan'l9 Jan' KV ole Bhadla - Bikaner line 350 4R4 52.lan'I KY D/C Bhadla (PG) - Bhadla (RVPN) line 52, Jan' Northern Region System Strengthening Scheme - XXXV 130 Aug' <) Aug'IS Aug'IS KV D/C Mohindergarh - Bhiwani line Aug' I8 Work under progress. Establishment of 220/22KV GIS at trt Chandigarh along with 220KV DIC line f,'om 2.15 Chandigarh GIS to 400f220KV Panchkula (PG) Sub station. Forest clearance awaited. \\.'ork slow down to extent possible 10 maleh Generation. 52 Feb' Feb'l9 Feb'19 I 220KV D/C UT Chandigarh SIS - Panchkula Award placcd in Mar'17. Foundation work (PG) SIS line Fcb' 19. conuncnced. (incl. 10 Kms undergroulid cable) System Strengthening Scheme in Northern Region - ~XVII LILO of both ckt of 400KV Dhauliganga - Bareilly (PG) line at Jauljivi 78 Mar' , Dec'I9 Dcc' Dec'19 Award placed in Mar' 17. lingg. in progress. Diversion of Dhauliganga-Bareilly 400KV D/C line (operated at 220KV) at Bareilly end from Dcc'19 /\ ward placed in Mar' l 7. Engg. in progress. Bareilly (UP) to Bareilly (PG) line Disconnection of 220KV LILO arrangament of Dhauliganga - Barcilly at Pithoragarh and Dcc'I9 Award placed in Mar' J 7. Engg. in progress., connecting it to Jauljive S/Stn. at 220KV level

50 POWERGRID SS page 4 of 32 CEA Jul'17 PROGRESS REPORT UP TO 25th JULY 2017 t!l1.<h.v m.rtf.tjt ~r.r ~ f.tmur <A ~ ~Ff'liIVH ~~~<J 39tmf ~ ~. <A Status of Construction Transformer Completion Tgt. ~ ~ mr.r em om:r MVA Gol I BoD Erection ~ Civil Str. & Str. & ~ ~r.r Schedule ~I Si. No. Name of the Sub -Station Ratio Approval Contractor Status of works Eqpt. Eqpt. Supply Erection qi'f(1~"'a land com pin. Received Erection (Nos) nt.l Act.1, (%) (%) (%),.,. -;rr Extn. of 765/400K V Ajmcr 's/stn. - BHEL 85% 70% 60% Available Apr'IS Extll. of' 400/220KV Sankhari S/stn. (GETCO) - BHEL Available 45% 25% Transmission System Strength,'ning in Indian Mar'16 " 1.10 System for Transfer of Power from Jan'IS Jan'IS Mangdcehhu Hydroelectric l'roj, in BHI.ITAN. Apr'IS Remarks Civil work, supply & erection under progrcss. Complction matching with associated line. Engg., supply & civil work under' progress. I Extn at 400KV bays at Alipurduar SIs tn. Available 99% 99% 99%.Ian'IS Bay available. Commissioning matching with line. HVDC Bipole link between Western Region May'16 (Raigarh, Chattisgarh) and southern Region 1.11 (l'ugalur, TM) - North Trichur (Kcrala)- Nov'19 Nov'19 Sctieme-I : Raigerh-l'ugalur 6000 MW HVDC System SOOKV HVDC Raigarh Station with 6000 MW ABS/ Acquired HVDC Terminal BHEL Nov'19 AI3BI SOOKV HVDC PugalurStatioll with 6000 MW Acquired BHEL Nov'19 HVDC Terminal 1.12 Green Energy Corridore ISTS - Part -D May'16 Award placed in.lun'1 6. Package was court case. Resolved ill I)"e' 16. Engg. in progress. Award pla ~,d ill Jun' 16. Package was colin case. Resolved ill Dec'16. i'ngg. in progress. May'19 May'19 Efforts are bl'illg made to complete early. I, 765/400KV Bikaner Sub station 2xl500 Techno Acquired 25% Engg. & civil work under progress. Unauthorised l.i2.1 May' 19 mining affect sitl' progress. StatclDisll. adlllll. help required Extn. at 765/400KV Ajmer Sub station Techno Available 15% May'19 Award placed in May'l 6. Engg & civil work under prooress Extn. at KV MogaSub station Techno Available 15% Award placed in May' 16. Engg. & civil work May'I9 under progress 2.0 NORTHERN.REGION 2.1 Northern Regional System Strengthening July'IOI Scheme - XVI May'ISI Jun'17 Jul'l7 PROJECT COMPLETED /220 KV Wanpoh Sub station 7xl05 JSL Available Compltd Compltd Compltd 2 2 Jul' 14 SLlb station commissioned with ICT-I (3'xl05) in Sep'13, ICT-ll (3x l05) commissioned in Jul' Extn. of 400/220KV Kishanpur Substation ' - JSL Available Compltd Compltd Compltd Jul'17 Commisisoned in Jul' Nov'lll One space 400KV bay at Dulhasti HEP Sly of Northern Regional System Strengthening Mar'17 Jun'17 Sep'l7 NHPC would be used for termination of the line at Scheme - X,XIV Dulhasti end.

51 PROGRESS REPORT UP TO 25th JULY 2017 I I ~. '1fi. lj I w: ~ tf;t ~1 ~r.r i~ f.tmur *t ~ ~lfq;i{lh ~ i'f~:«i, *t I~ ~!~ Status of Constructio n Transformer Completion Tgt. ~ ~ ror.r <fit ~ I\1VA Gol 1 BoD Erection ~ Civil Str. & St r. & ~ ~r.r Schedule ~I SI. No. Name of the Sub -Station Ratio Approval Contractor Status of works Eqpt. Eqpt. Supply Erection ql'f<1~ifia Remarks land com pin. Recei ved Erecti on (Nos) nt.! Act (% ) (%) (%) Extn. at 400/220 KV Deharadun, Abdullapur and CGLlL&T Available Compltd Compltd 99% Kishenpur Sub stati on, Sep'17 Bay rcudy. Commissioning matching \I'ith line Extn. at 400/220 KVBaiia Sub station, (2x63 GET Available Coinpltd Compltd Compltd MV AR Reactor) Jan'14 Comm issioned in Ja n' Strengthening Sch eme in Northern Region Oct'12 Oct'14 Sep' Extn of 400/220KV Kota S/Stn. (PG) (Shifting Alstom Available CompLld Compltd Compltd Mar'16 COlllm issioned in Mar' I Ii. 50MVAR LR Merta to Kota) NHVSI Avai lable 90%. 80% 76% I I Extn of 400/220KV Dehar S/Stn. (88MB) ([ns(, of One reactor coillmissioned. RepJ. or let. EMC 2x63 MVAR BR & Rep I, 250M/A 7fr, to 4xlO5 Sep'17 commissioned in Jan' I 7, MVA)! Balancc 0 I reaclo r damage d. Expecled by Scp' I 7! 2.33 Extn of 400/220KV Koteshwar SIS tn. (THDC) Alstom Available Compltd Compltd Compltd (125 MVAR BR) 2.4 Transmission System Associated with RAPP 7 & Mar' Part-A. 2A.I Extn. at 400KV Kota S/stn. Techno Available Compltd Compltd Compltd 2.5 Northern Region s.yste m Strengthening Seheme- XXX Feb'141 Mar'I7 Jul'17 CO ll1ll1is sil1ncd in Jul 'l 7 Mar'15.Jul'17 PROJECT COMPLETED Feb'IS. Feb' Extll. at 400KV Sillgraul i S/5tn. at i'-itpc Gen. Stll. AlslOm Available 80% 89% 48% Feb'18 Jul'17 Charged in.lui' I 7. Supply & civ il \\'orks under progress. Eq pt. crcctionlo sta rt in Dcc'l Extll. at 400/220KV Allahabad S/Stn. Alstom Available 100% 99% 96% Feb'IS Works un de r progress Extll. at 765/400KV Kallpur GIS Aistolll Available 100% 99% 98% Ocrl7 Works un der progress. 2.6 Norther.n Region System Strengthening Scheme- XXXII Feb'I41 Mar'17 Feb'IS Sep' Aug. at 400/220KV BaJlabhgarh S/stn. (replacing existing 4x3 15MVA with 4x500MVA ICT's) 740 Emco Available Compltd Compltd Compltd 4 4 Sep'17 ICT-I colllmiss ioned in Fcb'16 & ICT-II in Sep'16. ICT-III & IV in Jun' Aug. at 400/220KV Mandola S/stn: (replacing existing 4x315MVA with 4x500MVA ICT's) 740 Emeo Available Compltd Compltd Compltd 4 4 Oct' 16 ICT-I commissioned in Mar'16, lct-1i in Apr'16 & ICT-I11 in Muy'16. let-iv in Oct' Civii'wllrk, supp ly & erection un der progress. Provision of 7xl05 MVA 400/220KV ICT at Hysoung! 630 Available 94% 90% 92% 7 7 Sep'17 Mol'/CEA assistance required for implementation Parbati PS L&T of Down stream line by HPSEB. Aug. at 400/220KV Gurgaon Sis tn. Hysoung! Available Compltd Compltd Compltd I I Jul'I7 Charged & Ready for commisisoning. (4th ICT-500MVA) Un Extll. at 400/220KV Panehkula & Pati'lla S/stn. - Alstom Avai lable Compltd Compltd COl11pltd Apr' 16 Commissioned in Apr' Extll. at 765/400/220KV Lucknow S/stn, - Emco Available Compltd Compltd Compltd May'17 COl11missionedin May'17, Extll. at 765/400/220KV KanpurS/stn. - Hysoung Available Compltd Compltd Compltd May'17 Commissioned in May' POWERGRID 55 - page 5 of 32 CEAJul'17

52 PROGRESS REPORT UP TO 25th JULY 2017 ~.cfi.~ m.~.!f.;.l1 ~r.i ;;nfur firn'rot <t,'t ~ \;0 IHH 'VH ~~<:r 3r.Pmf ~ ~ ~ <t,'t Status of Construction Transformer Completion Tgt. ~ ~ mr.i ifit ;m:r MVA Gol l BoD Erection ~ Civil Str. & Str. & ~ $t<rr.i Schedule ~I SI. No. Name of the Sub -Station Ratio Approval Contractor Status of works Eqpt. Eqpt. Supply Erection qlfflfilifia land compln. Received Erection (Nos) nt.l Act (%) (%) (%) Extn at 400/220KV Chittorgarh S/stn. - Available Compltd Compltd Compltd Sep'16 Charged on Extl1 at 400/220KV Kaithal S/stn. - Emco Available Compltd Compltd Compltd Mar'17 Commissioned in Mar' Static VAR Compensators (SVCs) in Northern Region SVC at 400/220K V L.udhiun u S/stn. (+) 6UOMI'A R 1 (-) 400MVAR SVC at 400/220K V Ka nkroli SIs1l1. (I ).fooa1van / (-) 300MVAR SVC at 400/220K V Ne\\ Wanpoh S/stn. (+)300MVAR! (-) }OUMI'AU Augmentation of Transformers in Northern Region - Part-B. May'141 Oct'!7 Oct'17 Mar'17 - Sicmens Available Compltd Compltd Compltd Nov'16 Commissioned in Nov' Siemens Available Compltd Compltd Compltd Dcc'I(, ('o1j1 Jl1I" iol1cj in Dec' Mar'141 Mar'!7 Remarks Siemens Available 80% 75% 83% Oct'17 W\Jr~ affected due to di stu rbance in Kas hmir Extn. at 400/220KV Samba S/stn. 31S Tosh iba Available Compltd Compltd Compltd I 1 Oct'16 Commissioned in Oct:! Extn. at 400/220K V Ourgaon S/stn Extn. at 400/220K V Hamirupr SIs tn. 3xl05 NHVSI EMC NHVSI EMC Jul'!7 Oct'!7 Available 96% 98% 80% Oct'17 Supply, civil work & erection under progress. Available 6S% 36% 25% 3 'Oct'1 7 Ercetion under progress. Down stream line delayed. Critical Extn.at 400/220K V Jalandhar S/stn. SOO Toshiba Available Compltd Compltd Complld I I Jun'16 C() l1lmissi on~d in Jun' S Extn. at 400/220K V Panchkula S/stn. SOO Toshiba Available Compltd Compltd CompItd I I Mar'1 6 COlllmissioned in Mar'16. Transmission System associated with Tehri 2.9 Jan'IS Oct'I? Mar'I8 Pump Storage Plant (PSP) Award placed in Mar'IS. fngg., civil work & S/400KV Tehri Poolig Station (GIS) 4x800 NHVSlKEC 60% IS% Mar'18 supp ly under progress. Engg., civil work, supply& erection under Extn. at 765/400KV Meerut Sub station 1500 NHVS/KEC Available 75% 55% 30% Mar'IS progress, Transmission System associated with Jan'ISI Bays at Amargarh in the scope of POD, J&K 2.10 I Mar'I8 Mar'I8 Kishanganga HEr Mar'I7 Govt (rcady).! Extn. at 400f220KV Wagoora SIS tn. (PG). (02 nos I Engg., supply & civil work under progress. Work OE Alstom Av'ailable 30% 25% Mar'IS line bays) I affected due to disturbance in Kashmir., 2.11 Bus Reactors iii No rthern Region (Phase-H) Feb'IS Aug'i7 Aug'17 I Extn. at KV Panchkula, Sonepat & Kaithal i I Reactor at Panchkula & Kaithal comllllssioned in Sub station -, OE Aistom Available Compltd Compltd Compltd i I Dec'16 I Oct'16 & Soncpat in Dec'16. (l2smvar Bus Reactors in each extn'; I Extn. at KV Manesar, Kanpur, Bassi & Extn. at Bassi commissioned in Sep' 16. KanplIr & OE Alstom Jaipur South Sub station - Available 98% 98% 90% Aug'17 Jaipllr south commissioned in Dec' 16. Manusar IABB (\25MVAR Bus Reactors in each extn.) I expected by Aug'17. UVVCt\\.j"IU low ~ J.)d\.U:: VI ~,,-ca JUI If!

53 .."''''--'''''''''''-''- I PROGRESS REPORT UP TO 25th JULY 2017 tm.<ft.v m.rif.t.of ~r.1 I ;:;n:ft;:r ~<fi'r~ ~1"'Q\lvH ~ ~fi:".. " ~ ~ ~ <fi'r Status of Construction Transformer Completion Tgt. ~ mr ffir.r ifit 01m MVA Gol I BoD. Erection ~ Civil Str. & Str. & ~ ~r.; Schedule ~I SI. No. Name of the Sub -Station Ratio Approval Contractor Status of works Eqpt. Eqpt. Supply Erection Cilh1f<l<tiA land com pin. Received Erecti on (Nos) nt./ Act (%) (%) (%), Northern Region System Strengthening Scheme -, 2.12 Mar'IS July'I7 Scp'I 7 XXXIV Extn. at 400/220KV Agra Sub station :lis GE Alstom Available Compltd Compltd Compltd I I.lun '17 loll1missi(1ncd in.lun' work under proress. let at Kait hul IS to be provide Extn. ~t 400/220K V Kai th al Sub station 315 GE Alstom Available 60% 50%1 40% Scp'1 7 from rite 315 MVA (rcpl. 31:'1 to 500i\IV /\) at Ballabgarh S/Stn Extn at 400/220K V Bhinamal & Jullandhar S/stn. GE Alstom Available Compltd COl11pltJ COl11pltd Apr')7 2.\3 Creation of 400/220KV S/Stn. in NCT of Delhi during 12th Plan Period (Part-A) Mar'lSI Mar'17.1ull'19.Ill11'I') Remarks Bay <It.lullandhur Sis col11mi ssioned in Feh' 17 & Bhim<lnal in Apr') 7. '-- Rc-award under progress. Possision or land in /220K V Rajghat Sub station (GIS) 4x500 Acquired.lull'19 Dec'16. Award terminated due to delay inland acqurisition. Land under hol d /220KV Dwarka -I Sub station (GIS) 4x L&TI Hysoung Acquired 2% Scp' IS Land acqu ired in Au g' 16. Award placed in Dec'16. Engg. & civil work under progress. Creation of KV S/Stn. in NCT of Delhi Compln. Sch - 26 month fro m date of la nd acq. May'1S Ocl'IIl OcI'I8 during 12th Plan Period (Part-BI) (land acquired in Aug' 16) KV Tughlakabad S/stn (GIS) 4x Transmission System Associated with RAPP 7 & 8 - Part- B Extti. ill 400/220KV la ip ~t (South) S/stn.., L&TI Hysoung Acquired 20% ' Oct' 18.1uI'lS Nov'I7 Nov'I 7 Alstom Available 90% 75% 70% Nov' I Extn. at 400/220KV Kota S/s(n. Alstom Availab le 90% 75% 70% Nov' Augmentation of Transformation Capacity at Mainpuri & Sikar S/stn..1an'16.1an'18.Ian' I Extn. at 400/220KV Mainpuri S/stn. Ix500 SPML Available 60% 45% 20% Jan' Extn. at 400/220KV Sikar S/stn. Ix500 SPML Available 92% 85% 55% Jan' Provision of 400KV Bays for Northern Region Svstem Strenethenine Scheme - XXIX.1an'16 Nov'I8 Nov'I8 Land acquired tn Jul' 16. Award placed ill Dec'16. Engg. & civil work un (i0r progress. Engg., supply, civil works & erection under progress. Award placed inaug' 15. Engg" supply, civil works & erection under progress. Supply. civil work & erection un de r progress. Efforts being made to complete earlier. Su pply, civil work & erection under progress. Isslle needs to be takk lip with State for constructi on of 220KV line. RRVPNL yet to start construction work for down stream Extn. at 400/220KV l alandhar S/stn. Godrej Available Compltd Compltd Compltd Dec'16 Commi ssioned in Dcc' POWERGRID SS - page 7 of 32 CEA Jul'17

54 PROGRESS REPORT UP TO 25th JULY 2017 VI'T.tft.v m:~r.~.#1 ~r.r ~ ~<ti'r~?lfq>i«ih ~ «<-~.3fiI'tl'TCl' ~ ~ <ti'r Status of Construction Transformer Completion Tgt...) ~ ~ mr.r q;y ;m:r MVA Gol I BoD Erection ~ Civil Str. & Str. & ~ ~r.r Schedule ~I SI. No. Name of the Sub -Station Ratio Approval Contractor Status of works Eqpt. Eqpt. Supply Erection qlf(1\'aq;a land compln. Received Erection (Nos) Ill.! Act (%j (%) (%) Extl1. at 400/220KV SUl11ba S/stn. Godrej Available 65% 45% 40% Nov'IS Transmission System for Solar Power Park at llhadla, Rajasthan. 76S /400/220K V Bhadla Sub station Jul'16.Jan'19 Jan'19 Remarks Jaliandhar bay commissioned. Balance \vork (Amargarh bay) under progress. 3x1500 lata! Acquired Award Placed in Aug'16. Engg. & civil \\ork 25%.Ian'19 3X500, Al sto 111 under progress. 2.1~.2 Extl1. at 765/400KV Bikaner Sub station Alslol11 Available ~ Jan'19 Award Placed in Aug' 16. Engg. 111 jjrugrcs:;. Award Placed in Aug' Extn. at 400/220K V Bhadla (I< VPN) Sub station Available.Ian'1 9 (Exll7. work (0 be carried (Jill by II ' 1',," 01/ deposit work 01/ hehal/o/ PC) 2.19 Provision of STAT COM at Nalagarh & Lucknow in Northern Region Extn. at Lucknow Sub station (ST A TCOM) Extn. at Nalagarh Sub station (STATCOM) - Aug'16 Feb'19 Feb'I'> Ronxingl Techno Ronxingl Techno Available 3% Feb' 19 Available 2% 2.20 Provision of Series Reactors in Northern Region. Aug'16 Feb'19 Feb'19 I no. Series Bus Reactor at 400/220 K V Mandola S/stn. and 02 nos series line reactor along with Alstom Available 10% Feb'19 associated bays I no. Series Bus Reactor at 400/220 K V Ballabhgarh S/stn. along with associated bays - Als tom Available 5% Feb' Establishment of 220/66KV GIS at UT Chandigarh along with 220KV D/C line from Chandigarh GIS to 400/220KV Panchkula (PG) Sub station. I Feb'19 Feb'17 Feb'I9 Feb'19 Award plact:d in Sep'16. El1gg. & civil wurk under progress. Award placeu in Sep' 16. Engg. & ~ivil work under progress. Award placed in Aug'16. Engg. & civi l work under progress. Award placed ill Aug'16. Engg.. & civil work under progress !66KV UT Chandigarh (G IS) Sub station 2xl60 Acquired Ft:b'19 Award placed in Mar'17. Engg. in progress Extn at 400/220KY Panchkula Sub station - Available Feb'19 Award placed in Mar'17. Engg. in progress System Strengthening Scheme in Rc!!ion - XXXVII Northern Fcb'17 Dec'19 Dec' /220KV JauUivi (GIS) Sub station 7xl05 KPTL Acquired Dec'19 Award placed in Mar'17. Engg. in progress Extn at 76S/400K V l3areilly Sub station - KPTL Available Dec'19 Award placed in Mar' 17. Engg. in progress. System Strengthening Scheme in. Northern 2.23 Mar'17 Sep'19 Sep'19 Region - XXXVI KEc/ Extn. at 400/220KV Koteswar Pooling station - Available Sep'19 Award placed in Mar' 17. Engg. in progress. I NHVS - POWERGRID SS - page 8 of 32 CEA Juf'17 I

55 PROGRESS REPORT UP TO 25th JULY 2017 ~. cft. " ~.Rna.., ~r.j ;;r$:r f.tm'ot;f;'r ~ lfq)i{/h ~ ~a:1l ~ ~ ~ ;f;'r Status. of Construction Transformer Completion Tgt..:> ifi1riq; ~ ~r.; ~ orm MVA Gol I BoD Erection ~ Civil Str. & Str, & ~ ~r.r Schedule ~I SI.No. Name of the Sub -Station Ratio Approval Contractor Status of works Eqpt. Eqpt. Supply Erection qlfcifilqia land compln. Received Erection (Nos) nt.! Act (%) (%) (%) Extn. at 400/220K V Roorkee Sub station - KEC Available Scri' I9,l\ward placed in Mar'17. Engg. ill progress. System Strengthening Scheme in Northern 2.24 Mar'17.Jun'19,Iun'I9 Region - XXXVIII Creation of 400KV level at Aligarh (PG) 765KV GIS KECI xl500 Available.fun'19,l\wilrd placed in r>.,j ar' I 7. Engg. in progress. Switching Station - Extn. NHVS Extn. at 400KV Neemrana Sub sial ion - KEC Avai lable.iun' I9 Award placed III Ma r 17. I:ngg. in progress Line Bays Associated with Various Regional Strengthening Schemes in NR Mar'I7 Mar'l') 'lar' I Extn. at 765/400/220KV Fatchpur Sub station - KEC Available Oec'IS Award placed III Mar'17. Engg. in progress Extn. at 400KV Bhinmal Sub stall on - KEC /\vailable 5% Mar' Extn. at 400KV SikarSub station - KEC,1\ vailable 15% Mar' Augmentation of Transformation Capacity at Raebareli & Sitarganj 220 / 132KV SIStn, Mar'17 Mar'I9 Mar'19 Remarks Award placed in I-dar'l 7. Engg. &. civi l work under progress. Award placed in Mar' 17. r.ngg. &. civi l work under progres s Repl. of2x loomva ICT's by 2x200MVA Award placed in Ma r' l 7. Engg. in progress. 200 Kanohur Avai lab le Mar'I KV let's at Raebareli S/s tn. Efforts be ing made to complete carlier in FY 201 S Extn. at KV Sitarganj Sub station - Kanohur Available 5% Mar'19 Engg. & ci\'jj work under progress Augmentation of Transformation Capacity at Fatehabad 400/220KV S/Stn. Mar'17 Sep'I9 Sep'I Ext. at 400/220KV ICT's at Fatehabad S/sln. - KEC Available Sep'19 Award placed in Mar'17. Eng'g. in progress. 3.0 WESTERN REGION Western Region Strengthening Scheme - V Dec'071. Nov' 121 Jan'161 Dec'17 Oec'I7 Matching "'ith line. Mar'17 400/220 KV Navi Mumbai (GIS). 2x31S ABB Acquired Compltd Compltd Compltd 2 2 Oec'17 Sub station is rcady. Comm issioning matching with LILO line (under ROW) now planned to be " completed using under ground cable. Severe ROW prohlelll. Critical. Due to severe ROW portion at Navi-MlIlllbai end, Line was decided to be terlllinated at KlIdus SISln. I of MSETCL. Also 220K V down stream system (under MSETCL scope) delayed. Critical POWERGRID SS - page 9. of 32 CEA Jul'17

56 S.No. Power Station Unit size No of units Installed Capacity Units required to operate under RGMO/ FGMO as per IEGC Status of RGMO/FGMO Units operating under RGMO Units operating Units operating under FGMO with with inoperative manual control to governor /locked achieve RGMO governor Units exempted from RGMO/ FGMO by CERC Units applied to CERC for exemption/ extension Reason for seeking exemption/ extension CENTRAL SECTOR NTPC (Thermal) 1 Badarpur TPS 3x95 + 2x Mechanical governors 2 Singrauli STPS 5x x Mechanical governors 3 Rihand STPS 2x500+2x500+2x Dadri NCTPS 4x210+2x Unchahar I TPS 2x Unchahar II TPS 2x Unchahar III TPS 1X Unchahar IV TPS 1X Tanda TPS 4x Anta GPS 3x x Auraiya GPS 4x x Dadri GPS 4x x Faridabad GPS 2x x Khep 4x APCPL 15 Indira Gandhi STPS 3x Status not available Remarks NHPC 16 Bairasiul 3x Pondage of less than 3 hrs. 17 Salal 3x x ROR Scheme 18 Tanakpur HPS 3x ROR Scheme 19 Chamera I HPS 3x Chamera II HPS 3x Pondage of less than 3 hrs. 21 Chamera III HPS 3x Uri I 4x ROR Scheme 23 Dhauliganga 4x Dulhasti 3x Sewa II 3x Uri II 4 x ROR Scheme 27 Parbati III 4 x NLC 28 Barsingsar(NLC) 2x SJVNL 29 Nathpa Jhakri HPS 6x Rampur HPS 6x

57 THDC Ltd. 31 TehriHPP 4x KoteshwarHPS 4x NPC 33 RAPS A 1x100+1x Nuclear units 34 RAPS B 2x do 35 RAPS C 2x do 36 NAPS 2x do JOINTLY OWNED (BBMB) 1 Bhakra (left + right) (2x108+3x126+5x157) Dehar 6 x Pondage less than 3 hours 3 Pong 6x Delhi 4 Indra Prastha Gas station 6x30+3x Pragati GasTurbines 2x104+1x Bawana 4x216+2x RajghatTPS 2X Rithala GPS 3x HPGCL 9 Panipat TPS 2x210+2x DCRTP(Y'Nagar) 2x RGTPP Hissar 2X Himachal Pradesh 12 GiriBataHEP 2X ROR 13 LarjiHEP 3X ROR 14 Bhabha(Sanjay)HEP 3x ROR 15 Bassi HEP 4x J & K 16 Baglihar (3x150+3x150) LowerJhelum 3x ROR 18 UpperSindh II 3x ROR Punjab 19 Ranjit Sagar HPS 4x AnandpurSahibHPS 4x ROR 21 MukerianHP 6x15+6x ROR 22 Shanan(Jogindernagar) 4x15+1x ROR 23 UBDC 3x15+3x ROR 24 GNDTP Bhatinda (2x110+2x120) GGSSTP Ropar 6x GHTP L' Mohabbat 2x210+2x Goindval (GVK) 2x Rajpura 2x Talwandi Saboo 3x

58 Rajasthan 30 Kota TPS 2x110+3x210+2x Suratgarh 2x250+2x250+2x Chhabra 4x250+1x Jawahar Sagar 3x Rana Partap Sagar 4x Giral TPS 1x125+1x Rajwest 8x Dhaulpur CCPP 2x110+1x Mahi HEP 2x25+2x UP 39 Anpara TPS 3x x Obra TPS 2x50+2x94+5x Paricha 2x110+2x220+2x Harduaganj D 1x60+1x105+2x Panki thermal 2x KharaHEP 3x MatatilaHEP 3x ObraHEP 3x RihandHEP 6x UJVNL, Dehradun 48 Chibro PS 4x Khodri 4x Chilla 4x Tiloth (MB I) PS 3x Dharasu (MB_II) PS 4x Ram ganga 3x Dhalipur 3x Dhakrani 3x Kulhal.3x Khatima 3x Private 1 MG TPS (CLP), Jhajjar 2 x BaspaHEP(IPP) 3x KarchamWangtoo(IPP) 4x Vishnuprayag(IPP) 4x Run of river scheme 5 MalanaHEP(IPP) 2x AllainDuhangan(Pvt) 2x Rosa 4x BarkheraTPS(IPP) 2x KhambarkheraTPS(IPP) 2x KundariTPS(IPP) 2x MaqsoodpurTPS(IPP) 2x UtraulaTPS(IPP) 2x Anpara C 2x

59 Power System Operation Corporation Ltd. Northern Regional Load Despatch Centre Dated: 08 th August 2017 Outage of major Hydro generation on 30, 31 July and 01 Aug 2017 due to Silt Northern Region has been facing outage of large hydro generation during pre-monsoon and monsoon months due to high level of silt in rivers. On 18 th and 19 th July 2017 large hydro stations went under forced outage due to high silt. A Report dated 24 July 2017 on above event has also been issued earlier. Further to above, on 30, 31 July and 01 August 2017 also large Hydro stations like Karcham, N.Jhakri, Rampur, Baspa, Dehar, Bairasiul, Salal, Parbati-3 comprising more than 4500MW of generation went under forced outage. At times, the impact in the region was of the order of 7000MW. A sequential summary of the event is as follows: S.No. Time Date (in hrs) Antecedent Condition Event HVDC Mundra-Mohindergarh bi-pole out since 24-Jul-17 on tower Collapse Impact 2500MW Total Contingency in NR 2500MW 1 30-Jul-17 14:17 Karcham HEP outage on high silt 1000MW 3500MW 2 30-Jul-17 14:50 Jhakri and Rampur HEP outage on high silt 1920MW 5420MW 3 30-Jul-17 21:45 Karcham HEP revived -1000MW 4420MW 4 31-Jul-17 1:55 Jhakri and Rampur HEP revived -1920MW 2500MW 5 31-Jul-17 16:45 Baspa HEP outage on high silt 300MW 2800MW 6 31-Jul-17 20:55 Parbati-3 HEP outage on high silt 520MW 3320MW 7 1-Aug-17 5:15 Salal HEP outage on high silt 690MW 4010MW 8 1-Aug-17 6:10 Karcham HEP outage on high silt 1000MW 5010MW 9 1-Aug-17 6:50 Jhakri and Rampur HEP outage on high silt 1920MW 6930MW 10 1-Aug-17 9:20 Parbati and Baspa HEP two units each revived -460MW 6470MW 11 1-Aug-17 9:55 Karcham HEP revived along with one unit at Parbati HEP -1130MW 5340MW 12 1-Aug-17 10:30 Dehar running unit #1 outage on silt 165MW 5505MW 13 1-Aug-17 11:10 Remaining unit at Parbati-3 revived -130MW 5375MW 14 1-Aug-17 11:20 Karcham HEP outage on high silt 1000MW 6375MW 15 1-Aug-17 12:40 Baspa HEP remaining unit revived -100MW 6275MW 16 1-Aug-17 16:55 Baspa HEP outage on high silt 300MW 6575MW 17 1-Aug-17 18:35 Bairasiul HEP outage on high silt 180MW 6755MW 18 1-Aug-17 20:00 Salal HEP revived -690MW 6065MW 19 2-Aug-17 3:15 Bairasiul HEP revived -180MW 5885MW 20 2-Aug-17 3:45 Karcham HEP two units revived -500MW 5385MW 21 2-Aug-17 5:25 Karcham HEP remaining two units revived -500MW 4885MW 22 2-Aug-17 7:00 Baspa HEP two units revived -200MW 4685MW 23 2-Aug-17 12:00 Jhakri HEP five units revived -1250MW 3435MW 24 2-Aug-17 12:00 Dulhasti HEP outage on high silt 390MW 3825MW 25 2-Aug-17 12:20 Rampur HEP five units revived -350MW 3475MW 26 2-Aug-17 13:25 Baspa HEP remaining unit revived -100MW 3375MW 27 2-Aug-17 14:25 Jhakri HEP and Rampur HEP remaining unit each revived -320MW 3055MW 28 2-Aug-17 16:00 Dulhasti HEP revived -390MW 2665MW

60 The detailed event is summarised below: In antecedent condition, 500kV HVDC Mundra-Mohindergarh, WR-NR inter-regional link of 2500MW capacity was already out since 24 July 2017 on tower collapse. Due to this, there was reduced import capability of NR. On 30 th July 2017, at 13:04hrs, Karcham HEP informed about increasing level of silt followed by shutdown message of units at 13:22hrs. At 13:19hrs, N.Jhakri HEP informed about shutting down of units on account of high silt. On receiving the information, NRLDC informed all the entities about likely outage of Karcham (1000MW), Jhakri (1500MW) and Rampur (412MW) and requested to manage the control area exchange accordingly ( copies are attached at Annexure-1). From 07:15hrs onwards, Karcham, Jhakri and Rampur HEP started shutting down the units. The generation plot of above plants is attached at Annexure-2. The sequence of outage is as follows: Karcham N.Jhakri Rampur Unit Time(hrs) Unit Time(hrs) Unit Time(hrs) 2 13: : : : : : : : : : : : : : : :47 Time taken for complete outage of plant 00:37 00:55 00:59 The spread of the closure (staggering) of units of took slightly more time in comparison to the approved protocol. The stoppage of Unit #4, #5 at Rampur could have been staggered further. On account of above outage, there was an impact of around 3000MW (Karcham, Jhakri, Rampur) on the grid which increased the criticality of the grid. After the evening peak, due to decrease in silt level, Karcham HEP revived by 21:45hrs whereas Jhakri and Rampur HEP revived by 01:55hrs of 31 July On 31 July 2017, unit #2 of Rihand-III TPS revived at 01:32hrs. The unit was under planned outage since 03 July On 31 July 2017, Baspa HEP (3x100MW) shut down its units at 16:45hrs. Further, at 20:55hrs, Parbati-3 HEP (4x130MW) informed about increasing level of silt and shut down of all four units within 15min. On 01 August 2017, Salal HEP (6x115MW) shut down its units by 05:15hrs on increasing level of silt. Further, Karcham, Jhakri Rampur HEP again informed about increasing level of silt. On receiving the information, NRLDC again informed to constituents about likely outage of Salal (675MW), Karcham (1000MW), Jhakri (1500MW) and Rampur (412MW) HEP and requested to manage the control area exchange accordingly ( copies are attached at Annexure-1).

61 From 05:28hrs onwards, Karcham, Jhakri and Rampur HEP started shutting down the units. Though after reduction in silt level, Karcham revived its units by 09:35hrs but the plant again went under outage from 10:42hrs due to increased level of silt. The generation plot of above plants is attached at Annexure-2. The sequence of outage is as follows: Karcham N.Jhakri Rampur Unit Time(hrs) Time(hrs) Unit Time(hrs) Unit Time(hrs) 2 05:28 10: : : :39 10: : : :55 11: : : :10 11: : : : : : :45 Time taken for complete outage of plant 00:42 00:37 01:05 01:06 Therefore, despite less demand in the region due to rain, there was a contingency of around 7000MW in NR due to the large hydro generation outage. Parbati-3 HEP and Baspa HEP revived by 11:10hrs and 12:40hrs respectively. However, running unit #1 (165MW) at Dehar HEP went under forced outage due to high silt at 10:30hrs. At 16:55hrs, Baspa HEP again shut down its units on high silt. At 18:35hrs, Bairasiul HEP (3x60MW) also shut down its units on high silt. After decrease in silt level, all plants except Dehar revived in following sequence: o Salal HEP revived by 20:00hrs of 01-Aug-17. o Bairasiul HEP revived by 03:15hrs of 02-Aug-17. o Karcham HEP revived by 05:25hrs of 02-Aug-17. o Baspa HEP revived by 13:25hrs of 02-Aug-17. o Jhakri and Rampur HEP revived by 14:25hrs of 02-Aug-17. On 02 August 2017, at 12:00hrs, Dulhasti HEP (3x130MW) shut down its units on high silt and revived by 16:00hrs. Apart from above, following also observed: o Following thermal plants were generating less than the schedule for significant duration: APCPL Jhajjar TPS Unchahar TPS Rihand TPS (it seems SCADA data freezed) o Following thermal plants reduced the Declared Capacity (DC): APCPL Jhajjar TPS: Less DC declared from 23:00hrs of 01 August 2017 (~200MW). Dadri Stage-1 TPS: Less DC declared from 13:15hrs of 29 July 2017 (~300MW) and again on 03 August 2017 (~250MW). Dadri Stage-2 TPS: Less DC declared from 17:00hrs of 29 July 2017 (~400MW) and again on 03 August 2017 (~275MW). The relevant plots are attached at Annexure-3.

62 Actions taken to manage the situation: The issues of sudden outage of Hydro generation on account of silt, the protocol to be followed, maintaining adequate reserves for such outages have been discussed during various NRPC meetings and summer/monsoon preparedness meetings wherein constituents were apprised about the critical situation of the grid during such high hydro generation outage. Following were the actions taken during the event: Each Control area along with other entities in NR were informed about the likely outage of plant on silt flushing and were advised to manage the load-generation in respective control areas. Request was made to increase internal generation and bring units on bar from Reserve Shutdow (RSD). The revival of unit #2 of Rihand-III TPS on 31 July 2017, also reduced the generation deficit. Generation within NR was increased: o Ancillary Up (RRAS up) were triggered in NR and other regions. The details of Ancillary triggered in NR is attached at Annexure-4. o Un-Requisitioned surplus (URS) power taken by states and also allotted to overdrawing states. The summary of URS utilised is attached at Annexure-4. The plots of Central thermal, Hydro generation is attached at Annexure-5. Learnings from the incident: Improved technological methods to be employed for better monitoring of silt and silt forecasting along with load forecasting. The following may be employed to cater the high Peak hour ramping requirement: o Fast and early ramping of State thermal generation. o Ramping up of other generation like Hydro generation. Though the demand was relatively less during the span of the event, number of units in NR remained under Reserve shutdown viz. Kalisindh in Rajasthan, Rajpura, Talwandi Sabo in Punjab etc. which could be used by states having higher hydro generation portfolio wherein major outage took place. Arrangement of gas, coal at generating station needs to be ensured especially during the high demand period. The outage of various transmission elements during such events demands to keep further reserves keeping in mind the next contingencies. Moreover, timely revival of elements need to be ensured.

63 Annexure-1 Copy of received from Karcham at 13:04hrs of 30-Jul-17 Copy of received from Jhakri at 13:19hrs of 30-Jul-17 Copy of received from Karcham at 13:22hrs of 30-Jul-17

64 Annexure-1 Copy of sent to NR constituents at 13:48hrs of 30-Jul-17 Copy of sent to NR constituents at 05:37hrs of 01-Aug-17 Copy of sent to NR constituents at 06:13hrs of 01-Aug-17

65 Annexure-2 Shutting down of Karcham-Jhakri-Rampur due to silt on 30-Jul-17 Shutting down of Karcham-Jhakri-Rampur due to silt on 01-Aug-17

66 Annexure-3 APCPL Jhajjar TPS Schedule, Actual and DC Unchahar TPS Schedule vs Actual

67 Annexure-3 Dadri Thermal stage-1 Schedule, Actual and DC Dadri Thermal stage-2 Schedule, Actual and DC

68 Annexure-4

69 Annexure-5

70 Annexure-5

71 Annexure-5

72 Power System Operation Corporation Ltd. Northern Regional Load Despatch Centre Dated: 21 st July 2017 Outage of major Hydro generation on 18, 19 July 2017 due to Silt Northern Region has been facing outage of large hydro generation during pre-monsoon and monsoon months due to high level of silt in rivers ( A summary of silt based outages of Hydro stations for past 5 years is attached at Annexure-A). On 18 th and 19 th July 2017 also large hydro stations like Karcham, Jhakri and Rampur HEP went under forced outage due to high silt. The event is summarised below: On 18 th July 2017, in antecedent condition, Bairasiul (180 MW) HEP was already under shutdown since 17 th July 2017 due to high silt. At 06:31hrs, Karcham HEP informed about increasing level of silt. Immediately on receiving the information, NRLDC informed all the entities about likely outage of Karcham (1000MW), Jhakri (1500MW) and Rampur (412MW) and requested to manage the control area exchange accordingly ( copies are attached at Annexure-1). From 07:15hrs onwards, Karcham, Jhakri and Rampur HEP started shutting down the units. The generation plot of above plants is attached at Annexure-2. The sequence of outage is as follows: Karcham N.Jhakri Rampur Unit Time(hrs) Unit Time(hrs) Unit Time(hrs) 3 7:15 3 7:35 4 7:35 2 7:50 5 7:59 5 7:58 4 8:15 6 8:22 1 8:22 1 8:44 1 8:58 2 8:57 2 9:07 3 9:06 4 9:12 6 9:11 Time taken for complete outage of plant 1:29 1:37 1:36 Though the outage of units is as per the approved protocol, the stoppage of last two units at Jhakri, Rampur could have been staggered further. At 15:15hrs, Salal HEP also shut down all six units within 15 min. Therefore, around 3800MW (Karcham, Jhakri, Rampur, Bairasiul, Salal) hydro generation was out on silt issue which lead to alert situation in the system. A letter from GM, NRLDC was also issued to higher officials in this respect. (Copy of letter is attached at Annexure-3)

73 On 19 th July 2017, after decrease in silt level, Karcham, Jhakri and Rampur HEP revived by 04:45hrs, 11:30hrs, 11:45hrs respectively. However, at 17:22hrs and 17:41hrs, Rampur and Jhakri HEP again informed about increasing level of silt. Immediately on receiving the information, NRLDC again informed to constituents about likely outage of Karcham (1000MW), Jhakri (1500MW) and Rampur (412MW) HEP and requested to manage the control area exchange accordingly ( copies are attached at Annexure-1). From 18:10hrs onwards, Karcham, Jhakri and Rampur HEP started shutting down the units. The generation plot of above plants is attached at Annexure-2. The sequence of outage is as follows: Karcham N.Jhakri Rampur Unit Time(hrs) Unit Time(hrs) Unit Time(hrs) 3 18: : : : : : : : : : : : : : : :42 Time taken for complete outage of plant 0:58 1:19 1:18 Apart from above, the following events also occurred during the period: o On 18 th July 2017, at 11:58hrs, 800kV HVDC Champa-Kurukshetra pole-1 (Interregional link with WR) tripped on DC overcurrent. This resulted in reduced import capability of NR and subsequent revision of ATC/TTC. o With above, there was outage of the order of 5000MW in NR. o At 13:29hrs of 19 th July 2017, 765kV Fatehabad(UP)-Lalitpur TPS ckt-2 went under forced outage. As the Hydro generation went under outage due to silt by 19:45hrs, in view of the immediate need of generation during peak hours, the generation at Lalitpur could not be increased due to N-1 contingency of other circuit which could have resulted into tripping of entire Lalitpur TPS. NRLDC requested UP for early revival of above circuit. The circuit finally charged at 21:21hrs of 19-Jul-17. o Further, at 00:35hrs of 20 th July 2017, 400kV Agra(UP)-Fatehabad(UP) ckt-1 and 400kV Agra(PG)-Fatehabad(UP) ckt tripped resulting again in evacuation constraint for Lalitpur TPS. Oscillations were also observed in the system. (PMU plot is attached at Annexure-6). This generation outage under further N-1 contingency could have resulted into severe crises in NR. The generation at Lalitpur TPS was also reduced in view of above contingency. o The planned outage of 400kV Rihand-Singrauli ckt-1 & 2 was also carried out at 11:33hrs and 09:26hrs of 19 th July 2017 respectively. However, as the Hydro units again went under outage by 19:45hrs, the instructions were issued for early revival

74 of lines. The ckt-1 and 2 were revived at 19:59hrs/19-Jul-17 and 21:18hrs/20-Jul-17 respectively. o Fluctuations observed in voltage of Karcham during the shutting down of units on 19 th July The PMU plot depicting bus voltages of Karcham is attached at Annexure-6. o States like Haryana, Rajasthan, UP, Uttarakhand and HP reported higher shortages on July The Shortage figures for NR State control areas along with demand plots of few states is attached at Annexure-4 wherein it could be seen that load shifting/shedding was done by the states to mitigate the effect of hydro generation outage. Further, It was observed that HP overdrew ~9MU & 8MU (35% of day s consumption) on 18th and 19th July respectively. The relevant plot is attached at Annexure-4. Actions taken to manage the situation: The issues of sudden outage of Hydro generation on account of silt, the protocol to be followed, maintaining adequate reserves for such outages have been discussed during various NRPC meetings and summer/monsoon preparedness meetings as well wherein constituents were apprised about the critical situation of the grid in such scenario. The issue was also discussed in recently concluded 137 th NRPC-OCC meetings held incidentally on 18 th July Following were the actions taken during the event: Each Control area along with other entities in NR were informed about the likely outage of plant on silt flushing and were advised to manage the load-generation in respective control areas. Request was made to increase internal generation and bring units on bar from Reserve Shutdow (RSD). Generation within NR was increased: o Ancillary Up (RRAS up) were triggered in NR and other regions. o Hot reserved at the generating stations were scheduled. o Dadri (Th) (210 MW) and Dadri GPS ( =200MW, on liquid firing) were brought back from cold reserve at and 07:30hrs/18-Jul-17 respectively. Though, Dadri GPS asked to run unit on liquid firing, NTPC informed about additional gas availability of 0.2 MCMD from GAIL upon which only marginal schedule was given on liquid firing. o States control areas also increased their internal generation and brought back units such as CLP Jhajjar(660 MW) in Haryana, Talwandi Sabo(660MW) at in Punjab etc. o Higher generation scheduled at Lalitpur TPS during peak hours (Though all three units were operational but generation was lower due to coal issue at Lalitpur). o APCPL Jhajjar Declared Capacity (DC) was being declared less due to coal issue. However, plant declared higher DC from 00:00hrs of 19-Jul-17. Instruction were given to bring the unit on bar. However, unit could be brought on bar at 19:59hrs of 19-Jul-17. The plots of Central thermal, Hydro and Gas generation is attached at Annexure-5.

75 Learnings from the incident: Maintaining Reserves in the system: Though it is mentioned in the CERC approved Detailed procedure for taking unit(s) under Reserve Shut Down that the generators shall ensure to keep maximum number of units on bar which could help in maintaining hot spinning reserves in the system and to maintain 50% of largest size generating unit in state as reserve for contingencies, the same is still to be fully practiced by the entities. Even during this crisis, number of units in NR remained under Reserve shutdown. There was hardly any hot reserves left in the system. Thus, no margin for any further contingency was available. Thus monitoring of reserves and recouping of the same becomes very important for each state control area. Silt forecasting: Though it has been discussed many a times in various forums that silt forecasting is to be done for better silt monitoring and handling, there was very less time between high silt level and closure of units. Advanced forecasting needs to be adopted so that there would be enough time available to better handle the situation and maintain reserves in the system accordingly. Handling deviation from schedule by hydro dominant States: As already discussed and proposed in various forums, to avoid deviation in such contingencies hydro dominant states could adopt mechanisms like spinning reserve, shortterm purchase, banking or could also have arrangements with other states for contingent situation based exchange of power. States may employ methods like above to least impact the already stressed system conditions. Fuel availability at generating station: Arrangement of gas, coal at generating station needs to be ensured especially during the high demand period. In addition to above, running of full module at Gas station to be preferred for increasing flexibility. In such scenario, even in case of gas shortage the generation could be staggered so as to provide higher generation at peak hours. Handling further contingencies: The outage of various transmission elements during the above event stimulate to keep further reserves keeping in mind the next contingencies. Further, timely revival of elements need to be ensured to avoid any crises.

76 Annexure-1 Copy of received from Karcham at 06:31hrs of 18-Jul-17 Copy of sent to NR constituents at 06:37hrs of 18-Jul-17 Copy of received from N.Jhakri at 17:22hrs of 19-Jul-17

77 Annexure-1 Copy of received from Rampur at 17:41hrs of 19-Jul-17 Copy of sent to NR constituents at 17:42hrs of 19-Jul-17

78 Annexure-2 Shutting down of units due to silt on 18-Jul-17 Shutting down of units due to silt on 19-Jul-17

79 Annexure-4 Energy Shortage Punjab Haryana Rajasthan Delhi UP Uttarakhand HP J&K Chandigarh 17-Jul Jul Jul

80 Annexure-4

81 Annexure-4

82 Annexure-5

83 Annexure-5

84 Annexure-6 PMU plot of Karcham phase voltage on 18 th July 2017 PMU plot of Karcham phase voltage on 19 th July 2017 PMU plot of Karcham phase voltage on 19 th July 2017

85 S.No. Station Location Owner 1 Capacity in MW Bairasiul HPS HP NHPC 3* Outage date Outage Outage Outage Remarks MUs Outage date Remarks MUs Outage date Remarks MUs Outage date Outage Remarks MUs Outage date Outage Remarks MUs Outage date Outage Remarks (appr.hrs) hrs hrs hrs hrs hrs MUs 21-Jul-17 8 All units 08-Jul All units 3-Jul All units 28-Jul All units 12-Jun-13 3 All units 21-Jun All units Jul All units 17 2-Aug All units 14-Sep All units 24-Jul-13 8 All units 4-Aug All units 4 16-Jul All units 14-Aug-13 6 All units 20-Aug-12 6 All units Aug-13 8 All units 22-Aug-12 4 All units 25-Aug units 1-Sep All units 2 Chamera-II 23-Jun All units 26-Jun All units 12-Aug All units 6 1-Jul All units 7 17-Aug All units 7 4-Aug All units HP NHPC 3* HPS 15-Jul All units 22-Aug All units 19 Chamera-III 23-Jun All units 26-Jun All units 1-Jul All units 6 17-Aug All units 6 20-Aug units 4 HP NHPC 3* HPS 15-Jul All units 6-Jul All units Jul Jun-15 5 All units 19-Jul two units Jun units(flood Aug All units 8 Dhauliganga UTTRAKH NHPC 4*70 23-Jul Jul three units 12 HPS AND 4 02-Aug units 31-Jul All units 10-Jun Jun All units 28-Jun All units 16-Jul two units 4 8-Aug units 4-Jul All units 24-Jul All units Jul All units 11-Aug-13 7 All units 13 3-Aug-12 9 All units Aug All units 17-Jul-15 6 All units 1-Sep All units 18-Aug All units 22-Jul All units 5 Dulhasti HPS JK NHPC 3* All units 9-Aug (planned) 23-Aug All units (planned) 18-Jul Jul-16 4 All units 10-Jul All units 18-Jun-14 5 Three units 10-Jun All units 1-Aug All units All units Jul Jul All units 21-Jul-15 5 Three units 20-Aug-14 5 All units 17-Jun All units 20-Aug All units Aug-16 6 All units 21-Jul-15 4 All units 24-Jun-13 2 All units Aug All units 4-Aug All units 27-Jun All units 6 rcham Wangtoo H HP JP Hydro 4* Aug All units 9-Aug All units 5-Jul All units 09-Aug-16 5 All units 18-Aug All units 8-Aug-13 4 All units 10-Aug All units 24-Aug All units 18-Jul Jul-16 8 All units 19-Jun-15 2 All units 18-Jun All units 10-Jun All units 1-Aug All units All units Jul Jul All units 9-Jul All units 20-Aug All units 16-Jun All units 20-Aug All units Jul-16 5 All units 10-Jul All units 24-Jun All units 7 Nathpa-Jhakri 05-Aug All units 16-Jul-15 8 All units 26-Jun units HP NJPC 6* HPS 06-Aug All units 21-Jul-15 5 All units 27-Jun All units Aug-16 8 All units 21-Jul All units 5-Jul All units 09-Aug All units 9-Aug All units 8-Aug units 23-Aug All units 18-Aug All units 25-Aug All units 18-Jul Jul-16 8 All units 19-Jun-15 5 five units 20-Aug units 10 All units Jul Jul All units 9-Jul All units 18-Jul-16 5 All units 10-Jul All units 8 Rampur HEP HP NJPC 6* Aug All units 21-Jul-15 6 All units Aug All units 21-Jul All units 09-Aug-16 8 All units 9-Aug All units 09-Aug All units 18-Aug All units 23-Aug All units 11-Jun All units 26-Jun All units 25-Jun All units 23-Jul All units 15-Aug All units 9 5-Jul All units Jul-17 8 five units Jul All units 12-Jul-15 7 All units 3-Sep All units 4-Aug All units Jul-17 9 All units 07-Aug All units 17-Jul-15 6 All units 9 Salal HPS JK NHPC 6* Aug All units 26-Jul All units 9-Aug-15 8 All units 30-Aug All units 10 Uri II HPS JK NHPC 4*60 30-Jun All units Aug All units 8 5-Sep All units 12-Sep All units Aug All units 10-Jul Three units Parbati III 06-Aug-16 7 All units HP NHPC 4*130 HEP 08-Aug-16 8 All units Aug-16 6 Three units 02-Aug Two units 1 26-Jun All units 19-Jul One unit 2 16-Jun All units 4-Aug-12 9 All units Jul-15 6 All units 20-Jun All units 12 Tanakpur HPS UTTRAKH NHPC 3* AND 8-Jul All units 17-Aug All units 13 Dehar HPS HP BBMB 6*165 5-Jul All units 21 4-Aug-12 9 One unit 2 14 Uri I HPS JK NHPC 4*120 5-Sep All units 15

86 Annexure: ATC/TTC and N-1 violations for TTC/ATC for Monsoon State Punjab Haryana Rajasthan Delhi TTC during Monsoon-17 (MW) TTC: 6700 ATC: 6100 TTC: 6500 ATC: 5900 TTC: 6200 ATC: 5600 TTC: 5000 ATC: 4700 Constraints faced 400/220kV Amritsar, Ludhiana, Dhuri, Makhu 2220kV Moga Interconnector 220kV underlying network of Amritsar, Jallandhar, Ludhiana, Makhu etc. 400/220kV, 315MVA ICT at Kaithal. 400/220kV 315MVA ICT at Gurgaon 220kV network around Hisar; Hisar (PG)-Hisar (IA). 220kV Charkhi Dadri-Lula Ahir other issues were: Underlying Network at 400kV Jind & Bhiwani. Loading of 400/220 kv Bhiwani (BBMB) ICT (outage at Lula Ahir) Outage of 400 kv CLP Jhajjar -Dhanonda D/C on tower collapse. Switchgear issue at Nawada 765/400kV 2*1500MVA Phagi ICTs 400/220kV 2*315MVA Jodhpur ICTs 400/220kV 2*315MVA Sikar ICTs 400/220kV 2*315MVA Merta ICTs N-1 contingency of 400kV Phagi-Bassi D/C Other Points: N-1-1 Contingency of 765kV Anta-Phagi D/C or Both ICTs of Phagi/Anta Planning of further evacuation of Kawai/Kalisindh/Chhabra Outage of large renewable generation: LVRT issues. 400/220kV Bamnoli, Mundka & Harsh Vihar N-1 of Badarpur-Ballabhgarh N-1-1 of 400kV Dadri-Maharani Bagh and Ballabhgarh-Maharani Bagh. 220 kv underlying network of Bamnoli 220 kv underlying network of Mandola Other Points: Opening of 400 kv Delhi ring due to frequent cable problem at Bamnoli. Presently, open due to outage of 400 kv Jhatikara- Bamnoli on tower failure.

87 Uttar Pradesh Uttarakhand Himachal Pradesh Jammu & Kashmir TTC: ATC: TTC: 1500 ATC: 1200 TTC: 1175 ATC: 1025 (High Hydro) TTC:1800 ATC: /220 kv ICTs at Mainpuri, Moradabad, Agra (UP), Meerut, Obra, Sultanpur, Azamgarh, Lucknow (PG), Lucknow (UP), Gorakhpur(PG),Underlying 220kV network. Low voltages: 400kV Agra(UP), Muradnagar(UP), Muradnagar New(UP), Sultanpur & several 220kV nodes. UP ATC has been revised in May 17 to ~8000 MW (Own generation high) in view of commissioning of various 400kV and 220kV network of Uttar Pradesh. It would be further revised as and when network /load/generation changes. Loading on 400/220 kv Kashipur ICTs is not N-1 compliant (Gas generation at interconnection of 220kV Kashipur would relief the loading of Kashipur ICTs) Loading on 220 kv Roorkee (PG) Roorkee. In view of recently commissioning of 400/220kV Dehradun, import capability of Uttarakhand would be revised as network strengthening at Dehradun may improve its import capability from Grid. N-1 contingency of 220 kv Madanpur-Kunihar leads to the overloading of 220 kv Baddi-Kunihar. Loading on 220/132 kv Kunihar, Hamirpur and Jassore ICTs N-1 non-compliance of Wagoora ICT, underlying 220kV network of Wagoora, Kishenpur)

88 Punjab

89 UP

90

91 Delhi

92 Haryana

93 Rajasthan Akal Bus-1 Voltage Total 400/220kV Akal ICT loading 380kV N-1 contingency limit for ICT loading

94 Annexure- SPS for contingency due to tripping of HVDC Mundra-Mahendergarh Case-1 Contingency Action-1 Action-2 Blocking of (one pole or Bipole) AND Reduction in power injection at Mahendergarh by more than 600MW and up to 900MW Generation reduction of equivalent amount in Mundra Stage-III (WR) through the run back scheme Case-2 Action-1 Action-2 Blocking of (one pole or Bipole) AND Reduction in power injection at Mahendergarh by more than 900MW and up to 1250MW Generation reduction of equivalent amount in Mundra Stage-III (WR) through the run back scheme Case-3 Action-1 Action-2 Blocking of Bipole AND Reduction in power injection at Mahendergarh by more than 1250MW and up to 2000MW Generation reduction of equivalent amount in Mundra Stage-III (WR) through the run back scheme Case-4 Action-1 Action-2 Blocking of Bipole AND Reduction in power injection at Mahendergarh by more than 2000MW Generation reduction of equivalent amount in Mundra Stage-III (WR) through the run back scheme Shed 300MW identified load in Northern Region within 500 ms (including all signal propagation / breaker opening time delay) Haryana: 150MW, Punjab:50MW, Rajasthan: 50MW, UP: 50MW Shed 600 MW load identified in Northern Region within 500 ms (including all signal propagation / breaker opening time delay) Haryana: 300MW, Punjab:100MW, Rajasthan: 100MW, UP: 100MW Shed 1400 MW load identified in Northern Region within 500 ms (including all signal propagation / breaker opening time delay) Haryana: 600MW, Punjab: 200MW, Rajasthan: 200MW, UP: 200MW, Delhi: 200MW Shed 1900 MW load identified in Northern Region within 500 ms (including all signal propagation / breaker opening time delay) Haryana: 700MW, Punjab:300MW, Rajasthan: 300MW, UP: 300MW, Delhi: 300MW

95 Load Details for tripping of HVDC Mundra-Mahendergarh S. No. State/ L.S. Name of feeding Feeder/ line/ Case-1 Case-2 Case-3 Case-4 MW quantum substation equipment 300MW 600MW 1400MW 2000MW 1 132kV Mandawar kV Bansoor /132kV Alwar 132kV Ramgarh kV Malakheda Rajasthan 132kV Alwar(local load) /132kV Case-1: 50MW Ratangarh 132kV Sardar Shahar Case-2: 100MW 132kV Gangapur Case-3: 200MW 220/132kV 132kV Danta Case-4: 300MW Bhilwara 132kV Devgarh kV Kareda kV Kuchera /132kV Merta 132kV Lamaba kV Gotan /220kV Bhiwani_BBMB 220kV Bapora D/C Haryana 400/220kV Hissar_PG 220kV Isharwal D/C /220kV 16 Dhanonda through 220kV Rewari D/C kV Lula Ahir (3x100MVA) Case-1: 150MW Case-2: 300MW Case-3: 600MW Case-4: 700MW /220kV 220kV Nuna Majra D/C Bahadurgarh (3x100MVA) kV Charkhi Dadri 132kV Kalanaur /66kV 66kV Talwara Gobindgarh 66kV Talwara Punjab 21 66kV Gill Road /66kV 22 66kV Gill Road Case-1: 50MW Laltokalan 23 66kV Dugri Case-2: 100MW 24 66kV Malerkotla 35 1 Case-3: 200MW /66kV 66kV Lasoi Amargarh 45 1 Case-4: 300MW 26 Malerkotla 66kV Malaud$ kV Siarh$ Thana Bhagwan Uttar Pradesh Thana Bhagwan Jasala Case-1: 50MW Jasala Shamli 32 Case-2: 100MW Kharad Case-3: 200MW Kharad Case-4: 300MW Baraut Baraut Delhi 400/220kV Papankalan1 ckt Case-1: 50MW Bamnauli Papankalan1 ckt Case-2: 100MW 400/220kV Gopalpur Case-3: 200MW 39 Mandola Gopalpur Case-4: 300MW $: New feeder added in Punjab for peak demand period

96 Northern Regional Grid SPS Operation Monitoring Format-1 (To be forwarded by POWERGRID / Agency where SPS logic controller is installed) 1. SPS operation (Name & Case) : (Select from the following) Select by Tick Mark HVDC Rihand Dadri Name of the SPS Case Executed Remarks Case I / Case II 400 kv Muzaffarpur-Gorakhpur D/C Case I / Case II 2. Date and Time of the SPS Operation : 3. SPS Triggered : Yes / No (Can be confirmed with increase in counter at the source, Enclose the Alarm Print out) 4. Weather SPS triggered correctly? (Attach DR/ EL print outs) 5. SPS initiated control Forwarded to Destination (Yes / No) : (Can be confirmed with increase in counter at the destination) Location / Direction 1 Rihand STPS 2 Singrauli STPS 3 Mandola 4 Modipuram 5 Muradnagar 6 Samaypur (BBMB) 7 Panipat (BBMB) 8 Ratangarh 9 Alwar 10 Merta Control Send (Y /N) Location / Direction 11 Kota 12 Malerkotla (PSEB) 13 Laltokalan 14 Gobindgarh Control Send (Y /N) Name of the Reporting Station: Date: Place: Signature Name & Designation NRLDC, POSOCO

97 Northern Regional Grid SPS Operation Monitoring Format-2 (To be send by Utilities informing tripping of loads) 1. Date and Time of the SPS triggered control Operation : 2. SPS initiated control Received (Yes / No) : (Can be confirmed with increase in counter at the destination) Location 1 Mandola 2 Modipuram 3 Muradnagar 4 Samaypur (BBMB) 5 Panipat (BBMB) 6 Ratangarh 7 Alwar 8 Merta 9 Kota 10 Malerkotla (PSEB) Control Received (Y /N) Location 11 Laltokalan 12 Gobindgarh Control Received (Y /N) 2.1. Load Shedding: (Can be confirmed by opening of targeted CB or backing down of generation) Quantum Reason for Tripped of Load Non Substation Feeder (Y/N) Shed Operation, (MW) If any Delhi 400/ 220 kv Mandola (PG) 220 kv Mandoula-Narela D/C 220kV Mandola-Gopalpur D/C Uttar Pradesh 220/132 kv Muradnagar old 220/132 kv Modipuram. Rajasthan 220/132 kv Ratangarh 132 kv GSS Saradarsahar 220/132 kv Alwar NRLDC, POSOCO

98 Substation Feeder 132 kv GSS Malakhera & Rajgarh Tripped (Y/N) Quantum of Load Shed (MW) Reason for Non Operation, If any 132 kv GSS Bansur Local Load at Alwar 132kV GSS Mandawar 220/132 kv Merta 132 kv GSS Roon 132 kv GSS Merta Road 220/132 kv Kota 132 kv GSS Talera Haryana Panipat (BBMB) -1x100 MVA, 220/33 kv ICT at Panipat Samaypur (BBMB) 220 kv Samaypur Palwal -I 220 kv Samaypur Palwal II Punjab 220/66 kv Malerkotla -66 kv Malerkotla ckt -66 kv Naudhrani ckt NRLDC, POSOCO

99 Substation Feeder Tripped (Y/N) Quantum of Load Shed (MW) Reason for Non Operation, If any 220/66 kv Gobindgarh-1 66 kv Chourwala ckt-1 66 kv Chourwala ckt-2 66 kv Talwara ckt-1 66 kv Talwara ckt-2 66 kv Focal Point 220/66 kv Laltokalan 66 kv Gill Road ckt-1 66 kv Gill Road ckt-2 66 kv Ferozpur Road ckt Name of the Reporting Station / State Control Area: Signature Date: Place: Name & Designation NRLDC, POSOCO

100 Northern Regional Grid SPS Operation Monitoring Format-3 (To be send by Utilities informing generation back down) 1. Date and Time of the SPS controlled Backing down : 2. SPS initiated control Received (Yes / No) : (Can be confirmed with increase in counter at the destination) Generating Station Name 1 Rihand STPS 2 Singrauli STPS SPS Control Received (Yes /No) 1. SPS initiated control Executed : 1.1. Backing Down: 1 Generating Station Name Automatic Backing Down initiated (Yes /No) Time in which backing down was achieved If Yes, Then quantum of Back Down in MW Reason for Non Operation or backing down not being achieved in requisite time, If any 2 3 Remarks If any : Name of the Reporting Station: Date: Place: Signature Name & Designation NRLDC, POSOCO

101 S.NO. Element Name No. of forced outages Utility 1 400kV Bareilly(UP)-Unnao(UP) ckt-1 4 UP 2 800kV HVDC Champa(WR) - Kurukshetra(NR) Pole-1 3 POWERGRID 3 400kV Alaknanda HEP - Muzaffarnagar(UP) ckt-2 3 UP/Alaknanda/ Vishnuprayag 4 400kV Alaknanda HEP - Vishnuprayag HEP ckt-2 3 UP/Alaknanda Outage Date Outage Time 01-Jul-17 14:46 Reason/Remarks Line Reactor WTI/OTI trip(at Unnao end). From PMU, no fault observed. 10-Jul-17 14:58 From PMU, no fault observed. 11-Jul-17 5:43 23-Jul-17 13:24 Tripped due to PRV operated at Unnao end. From PMU, no fault observed. B-N fault Km from Bareilly. From PMU, line tripped in reclaim time. 16-Jul-17 11:55 Due to blcok command from control system. 17-Jul-17 10:25 VESDA (Very early smoke detection system) operated due to external smoke. 18-Jul-17 11:58 DC over current at Kurukshetra end. 06-Jul-17 1:05 R-N fault. 07-Jul-17 11:57 Y-ph jumper snapped near Alaknanda end (at 362mtrs). 31-Jul-17 8:37 R-N fault. From PMU, oscillations observed. 06-Jul-17 9:10 Tripped due to DT received from Alaknanda end. 07-Jul-17 11:57 Tripped alongwith tripping of Alaknanda-Muzaffarnagar. 25-Jul-17 21:15 R-N fault. From PMU, no Auto-reclosing observed. 15-Jul-17 16:54 From PMU, no fault observed kVAligarh(UP)-Mainpuri 765(UP) ckt-2 3 UP 24-Jul-17 12:22 Phase to earth fault. From PMU, no fault observed. 26-Jul-17 12:22 DT received at Aligarh end. From PMU, no fault observed. 05-Jul-17 19:55 Y-N Fault. 74kms from Simbholi end kV NAPS(NPC)-Simbholi(UP) 3 UP/NPCIL 17-Jul-17 22:35 Tripped on Generator transformer fault protection. From PMU, B-N fault occurred & no Auto-reclosing observed kV Uri II(NHPC)-Wagoora(PG) 3 POWERGRID/NHPC 31-Jul-17 18:35 Trip due to pole discrepancy. From PMU, Y-N fault occurred & no Auto-reclosing observed. 01-Jul-17 13:29 R-N fault. From PMU, no Auto-reclosing observed. 09-Jul-17 15:47 09-Jul-17 17:16 Y-N fault, km from Wagoora. From PMU, line tripped in reclaim time. Y-N fault; 92.99km from Wagoora; Current 2.3 KA. From PMU, line tripped in reclaim time with delayed fault clerance in second fault.

102 S. Regio No. n 1 NR 2 NR Name of Elements (Tripped/Manually opened) kv Cbganj Bareilly kv Cbganj Budaun kv Cbganj Dohna kv Cbganj Moradabad kv Cbganj Tanakpur 6.40MW Unit #1,# 2, & #3 of Tanakpur HEP kv Tanakpur Nepal 1.220kV Noida sec 20 (UP)-Badarpur kV Noida sec 20 (UP)-Gazipur(DTL) Owner / Agency Uttar Pradesh/ POWERGRID/ NHPC Uttar Pradesh/ Delhi/ NTPC Outage Revival Outage Duratio Date Time Date Time Time 1-Jul-17 12:50 01-Jul-17 14:10 1:20 1-Jul-17 13:09 01-Jul-17 16:32 3:23 Major Grid Events for July, 2017_Northern Region Event (As reported) 220kV CB Ganj and 220/132kV Tanakpur station went black out and all 40MW units of Tanakpur HEP (Unt 1,2& 3) tripped on under voltage protection. From PMU, sudden Voltage dip observed in all three phases. Red phase to Earth fault occurred leads to tripping of 220kV Noida sec 20 (UP)-Badarpur and 220kV 220kV Noida sec 20 (UP)-Gazipur(DTL). From PMU, MaxVoltage dip observed in Red-phase. Category as per CEA Grid Standard s within 24hrs Preliminary Report DR/EL Detailed Report after 24hrs Not Received within 24hrs after 24hrs Not Received Received GD1 Y(NHPC) Y(NHPC) Y(NHPC) Annexure- Not Received Fault Clearance time No faut observed GI1 Y Y Y 80ms 3 NR 1.765kV Balia-Sasaram 2.765kV Balia-Varansi 3.765kV Balia Lucknow 4.HVDC Balia Bhiwadi Pole1 & kV Balia-Sohawal ckt 1& kV Balia-Patna 1,2,3& kV Balia-Mau ckt 1& kV Balia-Biharsharif ckt 1& kV Mau-Anpara kV Mau-Azamgarh 11.HVDC Balia-Bhiwadi Bipole POWERGRID/ Uttar Pradesh 9-Jul-17 8:41 Complete 765/400kV Balia & 400/132kV Mau stations went blackout. During opening 400kV Patna- Balia ckt-4 for availing planned shutdown, blue phase breaker at 400kV Balia end stucked, further line side isolator of charged also opened. It resulted Y(POWER Y(POWER into distance protection operation for the line. As GRID) GRID) Y both the trip coil of 400kV Patna-Balia ckt-4 became faulty, operation of distance protection resulted 09-Jul-17 9:49 1:08 into LBB intiation. As LBB was inbuilt in bus bar protection and both the bus bar protection was GD1 1550ms under blocked condition, all the 400kV lines either tripped in Z-2, Z-1 from remote end or in reverse zone, over voltage protection from Balia end. 765kV lines tripped on back up earth fault protection either from Balia end or from remote end. From PMU, max Voltage dip observed in Blue-phase and staged fault clearnace. Y(UP) Y(UP) Y 4 NR 1.400kV Uri2-Uri MW Unit #3 of URI kV Wagoora-Uri2 4.60MW Units 1,2,3 & 4 of URI 2 POWERGRID/ NHPC 9-Jul-17 17:16 09-Jul-17 18:50 A severe earth fault occured on 400kV Uri2-Uri1 line. Along with line, tripped unit#3 of Uri1.Further,400kV Wagoora-Uri2 sensed the same earth fault on 400kV Uri2-Uri1 line and tripped on Over current 1:34 protection. On loss of evacuation path,all running GD1 units of URi2 tripped on Over frequency protection. From PMU, Red and Yellow phase Voltage dips observed at different timings. Y(POWER GRID) Y(NHPC) Y(NHPC) Y(NHPC) Y(POWER GRID) Y(POWER GRID) 80ms, 360ms 5 NR 1.400/220kV G.Noida ICT kV G.Noida -Nawada 3.400kV G.Noida- G.Noida(765kV) ckt kV G.Noida(765kV)-Sikandrabad ckt 1 Uttar Pradesh/Haryan 11-Jul-17 12:22 11-Jul-17 13:30 1:08 a Y phase CT of 400kV G.Noida- 400kVG.Noida(765kV)- 2 damaged. Bus bar protection operated at 400kV G.Noida station. GI2 Y Y Y 80ms

103 S. Regio No. n Name of Elements (Tripped/Manually opened) Owner / Agency Outage Revival Outage Duratio Date Time Date Time Time Major Grid Events for July, 2017_Northern Region Event (As reported) Category as per CEA Grid Standard s within 24hrs Preliminary Report DR/EL Detailed Report after 24hrs Not Received within 24hrs after 24hrs Not Received Received Not Received Fault Clearance time 6 NR 1.500kV Mundra-Mahendergarh Pole kV Mundra-Mahendergarh Pole 2 DC earth fault occurred at tower no. 936,which is ADANI/ SPS km from Mundra HVDC terminal, HVDC details (Punjab, Mundra-Mahendergarh bipole tripped. Tripping of Haryana, 24-Jul-17 12:26 05-Aug-17 4:36 12 days HVDC bipole further resulted into SPS operation. Rajasthan, UP and Delhi) From PMU, Multiple transients observed. GI2 Y Y Y 3000ms 7 NR 1.400kV Rihand(NTPC)-Singrauli(NTPC) ckt kV Rihand-Dadri pole 2 POWERGRID/ NTPC 26-Jul-17 21:23 26-Jul-17 22:57 1:34 400kV Rihand(NTPC)-Singrauli(NTPC) ckt 1 tripped on R-N fault, dist. 2.5km(from Rihand end) along with that, 500kV Rihand-Dadri pole 2 tripped on Short circuit protection. GI2 Y(POWER GRID) Y(POWER GRID) 100ms From PMU, Max Voltage dip observed in R-Phase. Y(NTPC) Y(NTPC) only DR copy Y 8 NR 1.220kV Moga(PG)-220kv Moga(PSTCL) ckt kV Moga(PG)-220kv Moga(PSTCL) ckt kV Moga(PG)-220kv Moga(PSTCL) ckt kV Moga(PG)-220kv Moga(PSTCL) ckt kV Moga (PSTCL)-Talwandi Bhai D/C 6.220kV Moga (PSTCL)-Baghapurana D/C 7.220kV Moga (PSTCL)-Bajakhana S/C kV Moga (PSTCL)-Sadiq S/C POWERGRID/ Punjab 27-Jul-17 14:33 27-Jul-17 15:37 1:04 Y phase wave trap jumper burnt at 220kV Moga (PSTCL) end of 220kV Moga (PSTCL)-Sadiq ckt leads to bus fault at 220kV Moga (PSTCL). 220kV Bus Bar Protection was not in service at 220kV Moga (PSTCL). It resulted into complete station outage of 220kV Moga (PSTCL) either from remote end in Z-2, Z-3 or from Moga (PSTCL) end. All four circuits of 220kV Moga(PG)-220kV Moga (PSTCL) ckts tripped from 220kV Moga (PG) end. From PMU, Max Voltage dip observed in Y-phase. GD1 Y(POWER GRID) Y(POWER GRID) 200ms

104 Annexure-I List of Tripping of Inter Regional Lines for the month of July 2017 S. No. Name of Transmission Element Tripped Owner/ Utility Outage Restoration Category as Load Loss/ Brief Reason per CEA Grid Gen. Loss (As reported) Date Time standards Date Time # Fault Clearance Time (>100 ms for 400 kv and 160 ms for 220 kv) *FIR Furnished (YES/NO) DR/EL provided in 24 hrs (YES/NO) Other Protection Issues and Non Compliance (From PMU, seems ) Remedial Action Remarks 1 500kV HVDC Mohindergarh-Mundra Pole 2 APL :31 Commutation fault at Mohindergarh end :56 Yes Yes 2 765kV Balia - Gaya POWERGRID :41 500MW Complete 765/400kV Balia station outage due to both trip coil circuit faulty in 400kV Balia (end)- Patna ckt kV both bus bar protection was also out of service and operator opened the isolator during charged breaker condition of 400kV Balia (end)-patna ckt-4. GD : msec* Yes Yes Over voltage stage-2 protection at Balia end Non-directional earth fault protection in 765kV Balia- Gaya line Discussed in PSAG. Bus bar, Pole discrepancy relays were not in service. Both trip coil circuit of 400kV Balia-Patna ckt- 4 also damaged kV Balia-Biharsharif ckt 1 POWERGRID :41 500MW Complete 765/400kV Balia station outage due to both trip coil circuit faulty in 400kV Balia (end)- Patna ckt kV both bus bar protection was also out of service and operator opened the isolator during charged breaker condition of 400kV Balia (end)-patna ckt-4. GD : msec* Yes Yes Over voltage stage-2 protection at Balia end Non-directional earth fault protection in 765kV Balia- Gaya line Discussed in PSAG. Bus bar, Pole discrepancy relays were not in service. Both trip coil circuit of 400kV Balia-Patna ckt- 4 also damaged kV Balia-Patna ckt 2 POWERGRID :41 500MW Complete 765/400kV Balia station outage due to both trip coil circuit faulty in 400kV Balia (end)- Patna ckt kV both bus bar protection was also out of service and operator opened the isolator during charged breaker condition of 400kV Balia (end)-patna ckt-4. GD : msec* Yes Yes Over voltage stage-2 protection at Balia end Non-directional earth fault protection in 765kV Balia- Gaya line Discussed in PSAG. Bus bar, Pole discrepancy relays were not in service. Both trip coil circuit of 400kV Balia-Patna ckt- 4 also damaged kV Balia-Patna ckt 1 POWERGRID :41 500MW Complete 765/400kV Balia station outage due to both trip coil circuit faulty in 400kV Balia (end)- Patna ckt kV both bus bar protection was also out of service and operator opened the isolator during charged breaker condition of 400kV Balia (end)-patna ckt-4. GD : msec* Yes Yes Over voltage stage-2 protection at Balia end Non-directional earth fault protection in 765kV Balia- Gaya line Discussed in PSAG. Bus bar, Pole discrepancy relays were not in service. Both trip coil circuit of 400kV Balia-Patna ckt- 4 also damaged kv Balia-Patna ckt 3 POWERGRID :41 500MW Complete 765/400kV Balia station outage due to both trip coil circuit faulty in 400kV Balia (end)- Patna ckt kV both bus bar protection was also out of service and operator opened the isolator during charged breaker condition of 400kV Balia (end)-patna ckt-4. GD : msec* Yes Yes Over voltage stage-2 protection at Balia end Non-directional earth fault protection in 765kV Balia- Gaya line Discussed in PSAG. Bus bar, Pole discrepancy relays were not in service. Both trip coil circuit of 400kV Balia-Patna ckt- 4 also damaged kv Balia-Patna ckt 4 POWERGRID :41 500MW Complete 765/400kV Balia station outage due to both trip coil circuit faulty in 400kV Balia (end)- Patna ckt kV both bus bar protection was also out of service and operator opened the isolator GD : msec* Yes Yes Over voltage stage-2 protection at Balia end Non-directional earth fault protection in 765kV Balia- Gaya line Discussed in PSAG. Bus bar, Pole discrepancy relays were not in service. Both trip coil circuit of 400kV Balia-Patna ckt- 4 also damaged. Page 1 of 4

105 Annexure-I List of Tripping of Inter Regional Lines for the month of July 2017 S. No. Name of Transmission Element Tripped Owner/ Utility Outage Restoration Category as Load Loss/ Brief Reason per CEA Grid Gen. Loss (As reported) Date Time standards Date Time # Fault Clearance Time (>100 ms for 400 kv and 160 ms for 220 kv) *FIR Furnished (YES/NO) DR/EL provided in 24 hrs (YES/NO) Other Protection Issues and Non Compliance (From PMU, seems ) Remedial Action Remarks 8 Balia-Biharsharif ckt 2 POWERGRID :41 500MW Complete 765/400kV Balia station outage due to both trip coil circuit faulty in 400kV Balia (end)- Patna ckt kV both bus bar protection was also out of service and operator opened the isolator during charged breaker condition of 400kV Balia (end)-patna ckt-4. GD : msec* Yes Yes Over voltage stage-2 protection at Balia end Non-directional earth fault protection in 765kV Balia- Gaya line Discussed in PSAG. Bus bar, Pole discrepancy relays were not in service. Both trip coil circuit of 400kV Balia-Patna ckt- 4 also damaged. Page 2 of 4

106 Annexure-I S. No. Name of Transmission Element Tripped Owner/ Utility 9 400kV Balia-Patna 2 POWERGRID :08 Outage Restoration Category as Load Loss/ Brief Reason per CEA Grid Gen. Loss (As reported) Date Time standards Date Time Tripped from Patna end. From PMU max dip observed in Y- phase List of Tripping of Inter Regional Lines for the month of July 2017 # Fault Clearance Time (>100 ms for 400 kv and 160 ms for 220 kv) *FIR Furnished (YES/NO) DR/EL provided in 24 hrs (YES/NO) :49 NO NO Other Protection Issues and Non Compliance (From PMU, seems ) Auto reclosure function not operated Remedial Action Remarks kV Balia-Patna 3 POWERGRID :16 R phase to earth fault, 121.7km from Balia, 3.44 KA :14 NO NO Auto reclosure function not operated kV Biharsharif-Varanasi 1 POWERGRID 13/07/17 14:33 PRV of Line reactor operated at Varanasi end. 13/07/17 15:40 NO NO Protection mal-operation kV Biharsharif-Varanasi 1 POWERGRID 13/07/17 15:46 PRV of Line reactor operated at Varanasi end. 13/07/17 16:58 NO NO Protection mal-operation kV HVDC Agra - Biswanath Cherialli line -2 POWERGRID 16/07/17 3:38 Tripped due to mal-operation of Vesda (Fire trip) 16/07/17 4:39 NO NO Protection mal-operation Observed from Agra PMU, the variation in R,Y &B phases voltages with respect to each other are beyond normal, Constituent may check the CVT measurement kV Champa(WR) - Kurukshetra(NR) line -1 POWERGRID 16/07/17 11:55 Due to maloperation of control system block command issued 16/07/17 13:11 NO NO Protection mal-operation kV Sasaram HVDC BtB POWERGRID 17/07/17 5:41 System failure alarm 17/07/17 6:38 NO NO Protection mal-operation kV HVDC Agra - Biswanath Cherialli line -1 POWERGRID 17/07/17 8:18 DC line fault near BNC end. From PMU, two transients observed. 17/07/17 11:31 NO NO Observed from Agra PMU, the variation in R,Y &B phases voltages with respect to each other are beyond normal, Constituent may check the CVT measurement kV HVDC Champa(WR) - Kurukshetra(NR) line -1 POWERGRID 17/07/17 10:25 VESDA(Very early smoke detection system operated) system operated due to external smoke. 17/07/17 11:05 NO NO Protection mal-operation kv HVDC Champa(WR) - Kurukshetra(NR) line -1 POWERGRID 18/07/17 11:58 DC over current protection operated at Kurukshetra end. 25/07/17 15:06 400msec NO NO kv Badod(MP)-Modak(RVPNL) Rajasthan /POWERGRID 20/07/17 17:40 Y phase to earth fault km from Badod 20/07/17 18:47 360msec NO NO Auto reclosure function not operated kV Pusauli (PGCIL) - Sahupuri (UPPTCL) UPPTCL/ POWERGRID 21/07/17 5:55 R phase to earth fault 27/07/17 9:59 NO NO Auto reclosure function not operated Page 3 of 4

107 Annexure-I List of Tripping of Inter Regional Lines for the month of July 2017 S. No. Name of Transmission Element Tripped Owner/ Utility Outage Restoration Category as Load Loss/ Brief Reason per CEA Grid Gen. Loss (As reported) Date Time standards Date Time # Fault Clearance Time (>100 ms for 400 kv and 160 ms for 220 kv) *FIR Furnished (YES/NO) DR/EL provided in 24 hrs (YES/NO) Other Protection Issues and Non Compliance (From PMU, seems ) Remedial Action Remarks kv Gwalior (PG) - Phagi (RVPNL) - 2 Rajasthan /POWERGRID 22/07/17 20:17 Phase to phase fault. Y-B-N fault 243.2KM from Phagi 22/07/17 22:03 Yes (Rajasthan) Yes (Rajasthan) 22 75kV HVDC Vindhyachal HVDC BtB Block 2 POWERGRID 22/07/17 20:17 DC over current protection tripped. 23/07/17 6:53 NO NO Protection mal-operation kV Gwalior (PG) - Phagi (RVPNL) - 2 Rajasthan/ POWERGRID 23/07/17 16:36 Phase to earth fault. / R-phase, FLR: 203 km Phagi 23/07/17 17:56 Yes (Rajasthan) Yes (Rajasthan) Auto reclosure happened at Gwalior end. 3-phase tripping on R-phase to earth fault from Phagi end to be checked kV HVDC Mohindergarh-Mundra Pole 1 APL 24/07/17 12:30 800MW (Planned SPS) DC earth fault occurred at tower no. 936,which is km from Mundra HVDC terminal, further resulted into SPS operation. From PMU, Multiple transients observed. GI : msec NO NO Tower collapsed in HVDC line due to flood in Gujrat. Only one pole revived on ERS kV HVDC Mohindergarh-Mundra Pole 2 APL 24/07/17 12:30 800MW (Planned SPS) DC earth fault occurred at tower no. 936,which is km from Mundra HVDC terminal, further resulted into SPS operation. From PMU, Multiple transients observed. GI-2 * * 3000msec NO NO Tower collapsed in HVDC line due to flood in Gujrat. Only one pole revived on ERS kV RAPS C(NPC)-Shujalpur(PG) 1 RAPPTCL 30/07/17 20:28 Bucholz relay of line reactor operated at Shujalpur and send DT to RAPS C Shujalpur ckt 1 line. 30/07/17 22:35 Yes(NPCIL) Yes(NPCIL) kV Sasaram HVDC BtB POWERGRID 31/07/17 18:34 System fail alarm appeared. 31/07/17 19:39 NO NO Protection mal-operation # Fault Clearance time has been computed using PMU Data from nearest node available and/or DR provided by respective utilities ( Annexure- II) *Yes, if written Preliminary report furnished by constituent(s) Fault Clearance time(>100ms for 400kV and >160ms for 1 220kV) 2 DR/EL Not provided in 24hrs 3 FIR Not Furnished 4 Protection System Mal/Non Operation 5 A/R not operation Legends CLD Cable Longitudinal Differential protection VESDA TFR Transient Fault Record VDCOL Voltage Dependant Current Operate Limit CCA Current Control Amplifier PMU Phasor Measuring Unit 1. CEA Grid Standard-3.e 2. CEA Transmission Planning Criteria Very early smoke detection apparatus * Complete event fault cleared time Reporting of Violation of Regulation for various issues for above tripping 1. IEGC 5.2(r) 2. CEA Grid Standard IEGC a 2. CEA Gris Standard 12.2 (Applicable for SLDC, ALDC only) 1. CEA Technical Standard of Electrical Plants and Electric Lines: 43.4.A 2. CEA (Technical Standards for connectivity to the Grid) Regulation, 2007: Schedule Part 1. (6.1, 6.2, 6.3) 1. CEA Technical Standard of Electrical Plants and Electric Lines: 43.4.C 2. CEA Technical Planning Criteria Page 4 of 4

108 Generation Projection (October December 2017) Generation declared Commercial from 1st Jan '17 to 30th June'17 Generation declared/expected to be declared Commercial from 1st July'17 to 30th Sep'17 Sl. No. Entities Regio n Projection s based on 3 Years Data Bus Name Unit No. Installed Capacity Gen. considere d Sub Total Bus Name Unit No. Installe Gen. d considere Capacit d y Sub Total TOTAL Comments From DICs /Others (if any) Figure as Projected Generation per before normalization Comments/ w.r.t projected All India PoC Data Peak Demand (MW) (MW) (MW) (MW) (MW) (MW) (MW) (MW) (MW) 1 UP NR As per data given by U.P Delhi NR As per data given by Delhi Haryana NR Shravanti Gas Uttarakhand NR 707 Shravanti Gas Shravanti Gas Punjab NR Chhabra Rajasthan NR As per data given by Rajasthan Himachal Pradesh NR Jammu & Kashmir NR BBMB NR As per data given by BBMB Chandigarh NR Railways NR Dadri Thermal NR Rihand NR Singrauli NR As per data given by NTPC 15 Unchahar NR Auraiya NR Dadri CCPP NR NAPS NR As per data given by NAPS Jhajjar NR DHAULIGANGA NR Tanakpur NR Koteshwar NR Tehri NR Anta NR As per data given by NTPC RAAP B NR RAPP C NR AD Hydro NR Everest NR Karcham Wangtoo NR

109 Generation Projection (October December 2017) Generation declared Commercial from 1st Jan '17 to 30th June'17 Generation declared/expected to be declared Commercial from 1st July'17 to 30th Sep'17 Sl. No. Entities Regio n Projection s based on 3 Years Data Bus Name Unit No. Installed Capacity Gen. considere d Sub Total Bus Name Unit No. Installe Gen. d considere Capacit d y Sub Total TOTAL Comments From DICs /Others (if any) Figure as Projected Generation per before normalization Comments/ w.r.t projected All India PoC Data Peak Demand (MW) (MW) (MW) (MW) (MW) (MW) (MW) (MW) (MW) 30 Bairasul NR Chamera 1 NR Chamera 2 NR Chamera 3 NR Naptha Jhakri NR Lanco Budhil NR DULHASTI NR Salal NR Sewa-II NR URI 1 HPS NR URI II HPS NR Sree Cement NR Parbati III NR Rampur HEP NR KOLDAM NR As per data given by NTPC TOTAL

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