Network Quality and Reliability of Supply Code

Transcription

1 Network Quality and Reliability of Supply Code 2017/18 Performance Report Prepared by: Asset Services

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3 Contents 1. INTRODUCTION 5 2. AUDIT REQUIREMENTS 5 3. SCHEDULE 1 - INFORMATION TO BE PUBLISHED: 6 Clause 4 and 10 6 Clause 5 - Significant interruptions to small use customers. 7 Clause 7 and 10 - Number of customer complaints in each discrete area: 12 Clause 8 and 10 - Total amount spent addressing complaints. 13 Clause 9 and 10 - Payments to customers for failure to meet certain standards 13 Clause 11(a), 12 and 13 - Average Length of Interruption of Supply to Customer Premises in Minutes 14 Clause 11(b), 12 and 13 - Average Number of Interruptions of Supply to Customer Premises 15 Clause 11(c), 12 and 13 - Average Percentage Of Time That Electricity Has Been Supplied To Customer Premises. 16 Clause 11(d), 12 and 13 - Average Total Length of All Interruptions of Supply to Customer Premises in Minutes 17 Clause 14(a) - Horizon Power - Average Length of Interruption - Frequency Distribution 18 Clause 15 Average Length of Interruption - Frequency Graph. 18 Clause 14(b) - Horizon Power - Number of Interruptions - Frequency Distribution 19 Clause 15 Number of Interruptions - Frequency Graph. 19 Clause 14(c) - Horizon Power - Total Length of all Interruptions - Frequency Distribution 20 Clause 15 Total Length of all Interruptions - Frequency Graph MAJOR EVENT DAYS APPENDIX 22 Major Event Days 22 Major Event Day Classification 22 Normalised Data Sets - Unplanned 22 DM# /18 Page 3 of 22

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5 1. INTRODUCTION This report has been produced to meet the requirements of the Electricity Industry (Network Quality and Reliability of Supply) Code 2005, Schedule 1 Information to be published. To assist in meeting reporting requirements the Economic Regulation Authority Western Australia (ERA WA) publishes the Electricity Distribution Licence Performance Reporting Handbook which specifies measures to be reported. The report is prepared in accordance with Schedule 1 of the Code, however as Horizon Power is a vertically integrated business (responsible for generation, transmission and distribution) reliability data includes generation and transmission outages. 2. AUDIT REQUIREMENTS Division 3 of the Electricity Industry (Network Quality and Reliability of Supply) Code 2005 requires that Horizon Power arrange for an independent expert to audit, and report on the operation of the systems that Horizon Power has in place for monitoring its compliance with the code. In 2017, the Minister for Energy removed the requirement for licence holders, such as Horizon Power, to annually engage an independent expert to audit and report on the operation of the systems in place for monitoring compliance with legislated electricity quality and reliability standards. The audit period was extended to three yearly. DM# /18 Page 5 of 22

6 3. SCHEDULE 1 - INFORMATION TO BE PUBLISHED: Clause 4 and 10 Voltage Fluctuations and Harmonics Clause 4(a) Number of breaches of each provision of the Code: Quality of Supply 2016/ /18 Voltage fluctuations 0 0 Harmonics 0 0 Clause 4(b) Remedial action taken for each provision: Voltage Fluctuations Location N/A Action Taken N/A Harmonics Location N/A Action Taken N/A N/A = Not Applicable. Continuous monitoring of voltage and frequency fluctuations is done at the substation busbar. Temporary power quality monitoring equipment is installed on the network for specific problem monitoring in response to a customer power quality complaint. DM# /18 Page 6 of 22

7 Clause 5 - Significant interruptions to small use customers. Clause Description 2016/ /18 Clause 5(a) Number of premises that experienced interruptions greater than 12 hours continuous Clause 5(b) Number of premises that experienced more than 16 interruptions Detailed analysis of interruptions where duration is greater than 12 hours for 17/18 System Duration Start Incident Premises Cause Description (Minutes) Date Category Bidyadanga /12/2017 Wind or Wind Bourne Feeder Trip Bidyadanga /02/2018 Equipment Failure Potential Neutral Problem - AMI Bidyadanga /02/2018 Equipment Failure Potential Neutral Problem - AMI Bidyadanga /02/2018 Equipment Failure Potential Neutral Problem - AMI Broome /07/2017 Vegetation On Service Wire Broome /08/2017 Equipment Failure No Power Broome /08/2017 Equipment Failure No Power Broome /12/2017 Bat Intermittent Power Broome /12/2017 Bat Intermittent Power Broome /12/2017 Emergency Outage For Miscellaneous Broome /12/2017 Emergency Outage For Arcing Street Wire Broome /12/2017 Wind or Wind Bourne Pole Down Broome /12/2017 Emergency Outage For Transformer On A Pole Damaged Broome /12/2017 Wind or Wind Bourne On Service Wire Broome /12/2017 Wind or Wind Bourne On Service Wire Broome /12/2017 Wind or Wind Bourne Low Hanging Service Wire Across Road Broome /12/2017 Wind or Wind Bourne Arcing Street Wire Broome /12/2017 Wind or Wind Bourne Service Wire Down Broome /12/2017 Wind or Wind Bourne On Street Wire Broome /12/2017 Wind or Wind Bourne Service Wire Down Broome /12/2017 Wind or Wind Bourne Pole Broken/Damaged Broome /12/2017 Wind or Wind Bourne Service Wire Down Broome /12/2017 Wind or Wind Bourne Service Wire Down Broome /12/2017 Wind or Wind Bourne Low Hanging Service Wire Across Road Broome /12/2017 Wind or Wind Bourne Intermittent Power Broome /12/2017 Vegetation LV Fuse Trip DM# /18 Page 7 of 22

8 System Duration Start Incident Premises Cause Description (Minutes) Date Category Broome /12/2017 Wind or Wind Bourne No Power Broome /12/2017 Vegetation LV Fuse Trip Broome /12/2017 Wind or Wind Bourne Service Wire Down Broome /12/2017 Wind or Wind Bourne Part Power Broome /12/2017 Wind or Wind Bourne No Power Broome /12/2017 Wind or Wind Bourne Part Power Broome /12/2017 Wind or Wind Bourne Part Power Broome /12/2017 Wind or Wind Bourne Part Power Broome /12/2017 Wind or Wind Bourne Part Power Broome /12/2017 Wind or Wind Bourne Part Power Broome /12/2017 Wind or Wind Bourne No Power Broome /12/2017 Wind or Wind Bourne No Power Broome /12/2017 Wind or Wind Bourne No Power Broome /12/2017 Wind or Wind Bourne Part Power Broome /01/2018 Vegetation Underground Dome Damaged Broome /01/2018 Water Infiltration or Flooded No Power Equipment Broome /01/2018 Vegetation Feeder Trip Broome /01/2018 Vegetation Service Wire Down Broome /01/2018 Wind or Wind Bourne On Service Wire Broome /01/2018 Wind or Wind Bourne On Service Wire Broome /01/2018 Vegetation On Service Wire Broome /01/2018 Vegetation On Service Wire Broome /01/2018 Equipment Failure Part Power Broome /02/2018 Wind or Wind Bourne Tight Service Wire Broome /02/2018 Equipment Failure Part Power Broome /03/2018 Equipment Failure Part Power Broome /03/2018 Human Error No Power Broome /03/2018 Water Infiltration or Flooded Miscellaneous Equipment Carnarvon /03/2018 Equipment Failure Recloser Trip Carnarvon /05/2018 Wind or Wind Bourne Miscellaneous Carnarvon /05/2018 Wind or Wind Bourne Pole Broken/Damaged Carnarvon /05/2018 Unknown Miscellaneous Carnarvon /05/2018 Wind or Wind Bourne Carnarvon /05/2018 Wind or Wind Bourne Carnarvon /05/2018 Wind or Wind Bourne Miscellaneous Non Miscellaneous Non Pole Broken/Damaged DM# /18 Page 8 of 22

9 System Duration Start Incident Premises Cause Description (Minutes) Date Category Carnarvon /05/2018 Wind or Wind Bourne Miscellaneous Non Carnarvon /05/2018 Equipment Failure Miscellaneous Non Carnarvon /05/2018 Equipment Failure Miscellaneous Non Carnarvon /05/2018 Equipment Failure Miscellaneous Non Carnarvon /05/2018 Equipment Failure Miscellaneous Non Carnarvon /05/2018 Unknown Part Power Carnarvon /05/2018 Equipment Failure Reconnection Cue /02/2018 Lightning Part Power Denham /07/2017 Equipment Failure Part Power Denham /08/2017 Equipment Failure Part Power Denham /11/2017 Equipment Failure Part Power Derby /07/2017 Unknown SFW PQI Voltage Fluctuation Derby /02/2018 Equipment Failure Part Power Esperance /07/2017 Unknown Sectionaliser Trip Esperance /08/2017 Equipment Failure Drop Out Fuse Trip Esperance /09/2017 Unknown No Power Esperance /11/2017 Lightning Recloser Trip Esperance /11/2017 Equipment Failure Part Power Esperance /11/2017 Bird Drop Out Fuse Trip Esperance /11/2017 Insect No Power Esperance /12/2017 PQI - Default Code SFW PQI High Volts Esperance /12/2017 Equipment Failure Switch Isolation Esperance /01/2018 Pollution Recloser Trip Esperance /01/2018 Equipment Failure Intermittent Power Esperance /02/2018 Equipment Failure No Power Esperance /02/2018 Lightning No Power Esperance /02/2018 Lightning No Power Esperance /02/2018 Equipment Failure Recloser Trip Esperance /02/2018 Equipment Failure Sectionaliser Trip Esperance /02/2018 Vegetation On Street Wire Esperance /02/2018 Equipment Failure Recloser Trip Esperance /02/2018 Emergency Outage For Disconnect For Fault Esperance /02/2018 Equipment Failure Drop Out Fuse Trip Esperance /04/2018 Vehicle Service Wire Down Esperance /04/2018 Vehicle Drop Out Fuse Trip Esperance /04/2018 Bird Recloser Trip Esperance /04/2018 Lightning Drop Out Fuse Trip Esperance /05/2018 Equipment Failure Part Power Esperance /05/2018 Vegetation Miscellaneous Non Esperance /05/2018 Plan Outage or Planned HVN Incident Disconnection Esperance /05/2018 Bird Drop Out Fuse Trip Esperance /05/2018 Emergency Outage For No Power DM# /18 Page 9 of 22

10 System Duration Start Incident Premises Cause Description (Minutes) Date Category Esperance /06/2018 Pole Top Fire Pole Fire Esperance /06/2018 Pole Top Fire Switch Isolation Esperance /06/2018 Equipment Failure No Power Exmouth /08/2017 PQI - Default Code SFW PQI High Volts Exmouth /10/2017 Equipment Failure Pole Arcing Exmouth /01/2018 Equipment Failure Pole Broken/Damaged Exmouth /01/2018 Water Infiltration or Flooded Underground Dome Equipment Damaged Exmouth /03/2018 PQI - Default Code SFW PQI High Volts Exmouth /06/2018 Equipment Failure Miscellaneous Non Exmouth /06/2018 Equipment Failure Miscellaneous Non Fitzroy /12/2017 Equipment Failure No Power Crossing Fitzroy /02/2018 Vandalism or Willful No Power Crossing Damage Fitzroy /05/2018 Vandalism or Willful No Power Crossing Damage Fitzroy Crossing /05/2018 Equipment Failure Miscellaneous Non Hopetoun /11/2017 Plan Outage or Recloser Trip Disconnection Hopetoun /11/2017 Vehicle Part Power Hopetoun /01/2018 Pollution No Power Hopetoun /03/2018 Equipment Failure SFW PQI Low Volts Hopetoun /06/2018 Wind or Wind Bourne No Power Kalumburu /05/2018 Vandalism or Willful No Power Damage Karratha /07/2017 Equipment Failure Pole Broken/Damaged Karratha /08/2017 Fire (Not Pole Top Fire) House / Building Fire Karratha /08/2017 Human Error Miscellaneous Non Karratha /09/2017 Pollution Feeder Trip Karratha /09/2017 Equipment Failure Part Power Karratha /11/2017 Plan Outage or Feeder Trip Disconnection Karratha /05/2018 Unknown Underground Dome Damaged Karratha /06/2018 Equipment Failure Miscellaneous Non Karratha /06/2018 Equipment Failure Underground Dome Damaged Karratha /06/2018 Equipment Failure Part Power Karratha /06/2018 Vandalism or Willful No Power Damage Kununurra /07/2017 Vehicle Underground Dome Damaged Kununurra /10/2017 Human Error Miscellaneous Kununurra /01/2018 Equipment Failure Recloser Trip Kununurra /05/2018 Equipment Failure Electric Shock Kununurra /05/2018 Vandalism or Willful Meter Box Damaged Damage Laverton /10/2017 Equipment Failure No Power Laverton /10/2017 System Generated No Power Laverton /11/2017 Equipment Failure Part Power DM# /18 Page 10 of 22

11 System Duration Start Incident Premises Cause Description (Minutes) Date Category Leonora /01/2018 Emergency Outage For Planned HVN Incident Leonora /05/2018 Vehicle Street Wire Down Looma /01/2018 Vegetation Low Hanging Service Wire Across Road Marble Bar /11/2017 Unknown Part Power Marble Bar /12/2017 Equipment Failure Low Hanging Street Wire Meekatharra /02/2018 Equipment Failure Recloser Trip Nullagine /02/2018 Vandalism or Willful No Power Damage Port Hedland /07/2017 Plan Outage or Planned HVN Incident Disconnection Port Hedland /07/2017 Vehicle Pole Broken/Damaged Port Hedland /10/2017 Human Error Electric Shock Port Hedland /11/2017 Equipment Failure No Power Port Hedland /11/2017 Insect Potential Neutral Problem - AMI Port Hedland /01/2018 Lightning No Power Sandstone /05/2018 Equipment Failure Miscellaneous Wiluna /04/2018 Vehicle Underground Dome Damaged 742 Number of Interruptions = 157 Customer interruptions greater than 12 hours that were due to significant events (cyclones, severe storms, fire & floods) that Horizon Power systems experienced in 2017/18. Power System Significant Event Dates Event Bidyadanga December 2017 Cyclone Hilda Broome December 2017 Cyclone Hilda DM# /18 Page 11 of 22

12 Clause 6 and 10 - Total number of Quality of Supply complaints received 2016/ / Clause 7 and 10 - Number of customer complaints in each discrete area: Discrete Area 2016/ /18 NWIS 8 4 Ardyaloon Beagle Bay Bidyadanga Broome 3 4 Carnarvon 2 2 Coral Bay Cue Denham 1 1 Derby Djarindjin Esperance 8 5 Exmouth 5 4 Fitzroy Crossing Gascoyne Junction Halls Creek 1 2 Hopetoun 6 3 Kalumburu Kununurra 4 1 Lake Argyle Laverton Leonora Looma Marble Bar Meekatharra Menzies 1 Mount Magnet 1 Norseman 1 Nullagine Onslow Sandstone Warmun 1 Wiluna Wyndham Yalgoo Yungngora Horizon Power Total DM# /18 Page 12 of 22

13 Clause 8 and 10 - Total amount spent addressing Power Quality and Reliability complaints. 2016/ /18 $1,647,756 $292,616 Note: The 2016/17 figure was overstated due to inaccuracies in work tracking and reporting practices. In 2017/18, there was a concerted effort to rectify these inaccuracies. Clause 9 and 10 - Payments to customers for failure to meet certain standards The number and total payments made to customers (who applied) for failure to give required notice of planned interruption. 2016/ /18 Number Cost Number Cost 1 $20 0 $0 The number and total payments made to customers (who applied) for supply interruptions exceeding 12 hours. 2016/ /18 Number Cost Number Cost 346 $27, $800 Note: 1 payment due to a cyclone 9 payments due to extended planned and unplanned outages DM# /18 Page 13 of 22

14 Clause 11(a), 12 and 13 - Average Length of Interruption of Supply to Customer Premises in Minutes 2 System 2014/ / / /18 Average NWIS Ardyaloon Beagle Bay Bidyadanga Broome Carnarvon Coral Bay Cue Denham Derby Djarindjin Esperance Exmouth Fitzroy Crossing Gascoyne Junction Halls Creek Hopetoun Kalumburu Kununurra Lake Argyle Laverton Leonora Looma Marble Bar Meekatharra Menzies Mount Magnet Norseman Nullagine Onslow Sandstone Warmun Wiluna Wyndham Yalgoo Yungngora Horizon Power Total NWIS North West Interconnected System as per Clause 1 Schedule 1 2 Corresponds to Customer Average Interruption Duration Index (CAIDI) DM# /18 Page 14 of 22

15 Clause 11(b), 12 and 13 - Average Number of Interruptions of Supply to Customer Premises 3 System 2014/ / / /18 Average NWIS Ardyaloon Beagle Bay Bidyadanga Broome Carnarvon Coral Bay Cue Denham Derby Djarindjin Esperance Exmouth Fitzroy Crossing Gascoyne Junction Halls Creek Hopetoun Kalumburu Kununurra Lake Argyle Laverton Leonora Looma Marble Bar Meekatharra Menzies Mount Magnet Norseman Nullagine Onslow Sandstone Warmun Wiluna Wyndham Yalgoo Yungngora Horizon Power Total NWIS North West Interconnected System as per Clause 1 Schedule 1 3 Corresponds to System Average Interruption Frequency Index (SAIFI) DM# /18 Page 15 of 22

16 Clause 11(c), 12 and 13 - Average Percentage Of Time That Electricity Has Been Supplied To Customer Premises. System % 2014/ / / /18 Average NWIS Ardyaloon Beagle Bay Bidyadanga Broome Carnarvon Coral Bay Cue Denham Derby Djarindjin Esperance Exmouth Fitzroy Crossing Gascoyne Junction Halls Creek Hopetoun Kalumburu Kununurra Lake Argyle Laverton Leonora Looma Marble Bar Meekatharra Menzies Mount Magnet Norseman Nullagine Onslow Sandstone Warmun Wiluna Wyndham Yalgoo Yungngora Horizon Power Total NWIS North West Interconnected System as per Clause 1 Schedule 1 DM# /18 Page 16 of 22

17 Clause 11(d), 12 and 13 - Average Total Length of All Interruptions of Supply to Customer Premises in Minutes 4 System 2014/ / / /18 Average NWIS Ardyaloon Beagle Bay Bidyadanga Broome Carnarvon Coral Bay Cue Denham Derby Djarindjin Esperance Exmouth Fitzroy Crossing Gascoyne Junction Halls Creek Hopetoun Kalumburu Kununurra Lake Argyle Laverton Leonora Looma Marble Bar Meekatharra Menzies Mount Magnet Norseman Nullagine Onslow Sandstone Warmun Wiluna Wyndham Yalgoo Yungngora Horizon Power Total NWIS North West Interconnected System as per Clause 1 - Schedule 1 4 Corresponds to System Average Interruption Duration Index (SAIDI) DM# /18 Page 17 of 22

18 Clause 14(a) - Horizon Power - Average Length of Interruption - Frequency Distribution Percentile Minutes 25 th th th th th th th Clause 15 Average Length of Interruption - Frequency Graph. During the period 01/07/2017 to 30/06/2018 of those customers who experienced an interruption, 40% had an interruption of less than 60 minutes. DM# /18 Page 18 of 22

19 Clause 14(b) - Horizon Power - Number of Interruptions - Frequency Distribution Percentile Interruptions 25 th th th th th th th Clause 15 Number of Interruptions - Frequency Graph During the period 01/07/2017 to 30/06/2018, 99.97% of customers experienced an average of less than 16 outages or less. DM# /18 Page 19 of 22

20 Clause 14(c) - Horizon Power - Total Length of all Interruptions - Frequency Distribution Percentile Minutes 25 th th th th th th th Clause 15 Total Length of all Interruptions - Frequency Graph DM# /18 Page 20 of 22

21 During the period 01/07/2017 to 30/06/2018, 90% of customers experienced outages with durations of less than 290 minutes. 4. MAJOR EVENT DAYS In the period 01/07/2017 to 30/06/2018 there were 3 systems impacted by 1 significant event for which Major Event Days were recorded. Power System Major Event Day Dates Event Bidyadanga December 2017 Cyclone Hilda Broome December 2017 Cyclone Hilda Djarindjin December 2017 Cyclone Hilda DM# /18 Page 21 of 22

22 5. APPENDIX Major Event Days Major event days are days in which interruptions affect the delivery of supply in a system and are not reasonably practicable to control such as extreme weather events (cyclones, fires and floods). These days are excluded from Sustained Interruptions used for reliability measurement and reporting. This report makes reference to the impact of major event days where they have had a significant impact on the statistics. Major Event Day Classification The classification of Major Event Days is to allow major events to be studied separately from daily operation, and in the process, to better reveal trends in daily operation that would be hidden by the large statistical effect of major events. A Major Event Day is a day in which interruptions affect the delivery of supply in a system that is not reasonably practicable to control. All indices are calculated based on removal of the identified Major Event Days. Interruptions that span multiple days are accrued to the day on which the interruption begins. Normalised Data Set - Unplanned Horizon Power uses Normalised data set to measure the management of incidents that are within the business control. Sustained Interruptions in Horizon Powers systems are those interruptions that result in a loss of electricity to customers for more than one minute in duration. Horizon Power s Normalised Data excludes interruptions where the interruption is not reasonably practicable to control such as: Customer installations/ appliances Planned outages/ disconnections Vehicle, machine or tool damage Wilful damage Damage due to events that Horizon Power cannot, so far as is reasonably practicable, control such as cyclones, fires and floods. As Horizon Power is a vertically integrated business (responsible for generation, transmission and distribution) reliability data includes generation and transmission outages. DM# /18 Page 22 of 22