EREC G5 Stage 2 Sub-group. Meeting No. 1

Size: px
Start display at page:

Download "EREC G5 Stage 2 Sub-group. Meeting No. 1"

Transcription

1 EREC G5 Stage 2 Sub-grup Meeting N. 1 Held at William Gilbert Meeting Rm, REEC Building, Sir William Siemens Huse, Princess Rad, Manchester, M20 2UR On Mnday 13th June :30-14:30 Meeting Ntes Attendee Affiliatin Initials Rle Frank Griffiths ABB FG Member Andrew Oliver TNEI AO Member Simn Scarbr WPD SPS Chair Ahmed Shafiu Siemens AS Secretary Item Tpic & Nte Actin 2. Sub-grup Chair & Secretary SPS agreed t chair and AS t take ntes. 3. Terms f Reference (TR) SPS: The TR requires us t cnsider whether alignment with ther standards (e.g. IEC TR ) is apprpriate. 4. Review Stage 2 & pssible changes Existing Stage 2 apprach verview AO highlighted an errr in the flw chart f Figure 1. The failed cnditin cmplies with Table 12 shuld be an input t DNO determines netwrk distrtins. FG nted that lack f understanding ver scaling f the tables 6, 7, 10 & 12 leads t issues cntractually. Clarity shuld be imprved if such tables remain. There was discussin ver whether applicatin f Stage 2 really requires measurements in all cases. Pst-meeting nte. SPS: Table 10 desn t require measurement, althugh the values quted are derived frm Table 12 (which des as it assumes 75% PL is left); hwever, Table 10 is based n the current emissin percentages in ACE 73 Appendix C being used t derive the largest equipment rating that met the current limits in 12. These kva values were runded and then divided by 6 t give the values in Table 10. S Table 10 is nt sensitive t

2 measured values unless very clse t r abve Planning Level.> FG believes it wuld be useful t prvide a methd fr calculating HV distrtin frm LV measurements (including the phase angles). AS stated that LV measurement pint will nt exist fr the current cnnectin and will have t rely n an existing LV cnnectin pint. Here LV is 400V. FG stated then it cmes dwn t whether the LV measurement available is a representative f the cnnectin pint upstream. FG nted that the current emissin spectrum differs fr wrking pwer value cmpared with maximum pwer value and als changes if the amunt f equipment changes. He suggested that therefre the assessment shuld primarily cnsider nt the rated cnditins f the equipment, rather the wrking pwer cnditins. This will especially be the case fr plant items having significant shrt term verlad capability. FG nted that under unbalance cnditins the current emissins change; ntably triplen behaviur. He als stated that unbalances n the netwrk will cause triplens t pass thrugh t the LV side which has nthing t d with the cnnected lad. AO & FG raised the pssibility f revising the assessment such that it predicts the vltage distrtin n the basis f fault level and percentage f Planning Level equipment current emissin prfile. This may avid the need t measure backgrund if the values are small (the limit t be determined) and may allw Table 12 t be remved. FG agreed t write this up/prepare pssible flw chart. AO highlighted the need t cnsider DNO discretin which may allw cnnectin withut backgrund measurement. FG Previus suggested text (Aug 2011 draft) The previus text prepared by Geff Brwn was briefly reviewed. The fllwing were highlighted by SPS: Current limits n per MVA and per 10MVA basis. The inclusin f active infeed cnverters. Change f the Typical value f F fr 11kV frm 100MVA t 60MVA (default). Requirements arising frm draft EREC G5/5 Draft V6 Alignment with Stage 1 apprach Including a Cmpliant with Resnant plant requirement? FG stated it is nt clear whether in Equatin 5 cnsiders the presence f detuning r inrush reactrs in cap bank. Aggregatin as per general text. FG stated that straight additins f 5 th harmnic may nt be the right apprach. It was nted by all that the wrking grup has decided IEC summatin apprach. Extensin t 100 th harmnic. SPS expressed cncern ver measurements at 11kV f

3 higher rders. AS stated accuracy f the mdels at higher frequency is als a cncern. N allcatin (except as inferred in the tw tables equivalent t Stage 1 tables 13 and 14). Ignre transfer frm upstream. AS stated that calculatin f transfer frm upstream wuld require detail mdelling. N alignment with Stage 2 f IEC TR New cnsideratins (NB Agenda items belw) Vltage surce versus current surce FG stated that majrity f the surces cnnected are vltage nt current surce based. Wrst case netwrk impedance/etr112/values f k Aggregatin/summatin see ntes f full WG S i /S c 0.2% (IEC TR ) 5. Agree utline spec fr Stage 2 update 6. Detailed review 6.1 Wrst case netwrk impedance/etr112/values f k (G5/4-1 Table 8) SPS shwed a graph prduced by a cnsultant lking at the driving pint impedance fr three types f Primary substatin: rural, urban (all cable) and mixed. This raised the cncern that the maximum impedance envelpe may nt be cnservative in all cases, nting that the resnant peak may be beynd the 8 th harmnic. AS stated the resnant peaks are als impacted by the upstream and dwnstream netwrk arrangement. It als illustrated that there may be advantage in ding a mre detailed study f harmnic impedance at the PCC (e.g. Stage 2 plus). After discussin AO agreed t cnsider hw best t d mdelling t examine varius substatins t see if the maximum impedance envelpe needs updating and als if the impedance envelpes frm varius substatins can be generalised; it may be that a qute culd be prepared. AO Pst-meeting nte. SPS: I have discussed this issue als with Edif ERA. They may als be able t d smething similar. 6.2 Simple reactance mdel & vltage surce versus current surce SPS: Time did nt allw a detailed discussin. FG cnsiders nature depends n rati f fault level (surce impedance) t equipment rating. Review f the frequency dependent supply impedance in ETR112 suggests that Table 12, and Table 7, be scrapped and a vltage distrtin calculatin be made based n estimated lad harmnic spectrum and frequency dependent impedance values. This apprach wuld replace k values with a revised impedance rati equatins fr typical supply arrangement e.g cable vs verhead line.

4 Nte : Mst estimates f harmnic spectra assume a linear impedance/frequency relatin fr the supply impedance. If we accunt fr the variability f supply impedance with frequency then the cited spectra will have t be adjusted accrdingly. This is because we are dealing with vltage surce, nt current surce. SPS Pst-meeting nte: A balance is required s that nt all studies require very detailed mdelling if pssible. We are lking t investigate further the impedance envelpe by use f mdelling t see if a maximum impedance envelpe apprach can be used. 6.3 Aggregatin/summatin see ntes f full WG 6.4 Default fault levels (G5/4-1 Table 9) SPS The 100MVA typical value is t high. Levels at the ends f rural 11kV circuits can be as lw as 10MVA. 6.5 Current emissin limits (G5/4-1 Table 12 & ETR 122) SPS explained hw Table 12 had been derived. Table 12 the currents equate t ¼ f the PL fr thse subject t linear summatin and this allwed them t have 66.7% f the PL fr thse subject t quadratic additin (frm sqrt(1^2-0.75^2) = 0.66). If we change the summatin expnents fr vltage t IEC then the figures will need t be rewrked See cmments 6.2 abve 6.6 kva limits (G5/4/1 Table 10) SPS explained hw Table 10 has been derived, referring t ACE 73 and the current prfiles assumed in Appendix C. FG nted that these assumptins appear ut f date. Review f Table 10 derivatin shws a mix f G5/3 and ACE73.The typical harmnic ratis in Table C1 are n lnger representative f 6 pls dide bridge feeding a capacitr bank. Typical values are nw ; Harm New ratis ACE73 : Table C % 17.5% % 11.0% % 4.5% % 2.8% These revised values reflect back t Stage 1 : Table 10 as Supply Vltage Three Phase Cnverters 6 Pulse (KVA) 12 Pulse (KVA) 400V This assumes that these values match the harmnic current crrespnding t a 25% planning level 10MVA LV fault,

5 an assumed pwer rati f 6 (as per? para 5 sectin 5.2 ACE73) and an impedance rati f 0.5 (relative t symmetrical fault level impedance) 6.7 S i /S c 0.2% (IEC TR ) SPS highlighted this apprach frm Stage 1 f the IEC TR; it has caveats regarding resnance, existing backgrund distrtin levels and risk f interference. AO nted that Table 10 is similar, albeit referring t equipment rating. 7. Update spec fr Stage 2 update Due t lack f time, SPS asked that each member list their requirements fr the revisin f Stage 2 in terms f minimum requirements and pssible requirements. All 8. Allcate tasks See Actins. 9. AOB Nne 10. Future meetings Dates T be plled. Agenda items. T be agreed by . Vltage surce versus current surce.

6 Draft Spec fr Stage 2 Update (SPS versin 1) Serial Item Cmment 1 Alignment with Stage 1 apprach. 2 Include a Cmpliant with Resnant plant requirement? 3 Aggregatin as per general text. NB This will affect Table 10 & 12 values. 4 Extensin t 100 th harmnic. 5 N allcatin (except as inferred in the tw tables, equivalent t Stage 1 tables 13 and 14). 6 Ignre transfer frm upstream. 7 N alignment with Stage 2 f IEC TR Imprve clarity ver scaling f values in Tables 10 & Update harmnic emissin prfiles used t derive Table 10. NB This will affect values in Table Change typical fault level t be mre typical (e.g. 60MVA fr 11kV). Dependant n apprach used fr item 8 this wuld als feed int Table 12 values. 11 Bring table 11 values int line with updated planning limits. 12 G5/5 draft 6 brings all 33kV cnnectins int stage 2, we shuld prvide a view t the main grup n whether including 33kV cnnectins in stage 2 is apprpriate. SPS pst-meeting nte: I have asked Frz whether 33kV cnnectins shuld g t Stage 3. Minimum Requirements Serial Item Cmment 1 Update fr vltage surces. 2 Review Maximum Impedance Zh Envelpe. 3 Cnsider including S i /S c 0.2% simplified assessment. 4 Prvide methd f inferring HV levels frm measurement at LV. 5 Revise assessment t predict vltage distrtin n basis f fault level and % PL 6 Cnsider Stage 2 plus (simplified Stage 3) where the actual Z versus frequency driving pint impedance is used rather than Maximum Impedance Envelpe 7 Cnsider if PWHD clause fr many marginal current exceedences 23 h 50 f table 12 is wrthwhile r if the cnnectin in that case shuld just prceed t the vltage calculatin. Pssible Review/Requirements

Revision: August 19, E Main Suite D Pullman, WA (509) Voice and Fax

Revision: August 19, E Main Suite D Pullman, WA (509) Voice and Fax .7.4: Direct frequency dmain circuit analysis Revisin: August 9, 00 5 E Main Suite D Pullman, WA 9963 (509) 334 6306 ice and Fax Overview n chapter.7., we determined the steadystate respnse f electrical

More information

EREC G5 Stage 2 Sub-group. Meeting No. 5. Held at National Grid House, Warwick Technology Park, Gallows Hill, Warwick, United Kingdom CV34 6DA

EREC G5 Stage 2 Sub-group. Meeting No. 5. Held at National Grid House, Warwick Technology Park, Gallows Hill, Warwick, United Kingdom CV34 6DA EREC G5 Stage 2 Sub-group Meeting No. 5 Held at National Grid House, Warwick Technology Park, Gallows Hill, Warwick, United Kingdom CV34 6DA On Wednesday 9th November 2016 10:00-15:30 Meeting Notes Attendee

More information

Technical Bulletin. Generation Interconnection Procedures. Revisions to Cluster 4, Phase 1 Study Methodology

Technical Bulletin. Generation Interconnection Procedures. Revisions to Cluster 4, Phase 1 Study Methodology Technical Bulletin Generatin Intercnnectin Prcedures Revisins t Cluster 4, Phase 1 Study Methdlgy Release Date: Octber 20, 2011 (Finalizatin f the Draft Technical Bulletin released n September 19, 2011)

More information

MODULE FOUR. This module addresses functions. SC Academic Elementary Algebra Standards:

MODULE FOUR. This module addresses functions. SC Academic Elementary Algebra Standards: MODULE FOUR This mdule addresses functins SC Academic Standards: EA-3.1 Classify a relatinship as being either a functin r nt a functin when given data as a table, set f rdered pairs, r graph. EA-3.2 Use

More information

Generating System Data and Model Guidelines. Determination and Report

Generating System Data and Model Guidelines. Determination and Report Natinal Electricity Market Management Cmpany Limited ABN 94 072 010 327 Generating System Data and Mdel Guidelines Determinatin and Reprt Prepared by: Pwer System Planning and Develpment Versin: 1.0 Date:

More information

, which yields. where z1. and z2

, which yields. where z1. and z2 The Gaussian r Nrmal PDF, Page 1 The Gaussian r Nrmal Prbability Density Functin Authr: Jhn M Cimbala, Penn State University Latest revisin: 11 September 13 The Gaussian r Nrmal Prbability Density Functin

More information

We respond to each of ORR s specific consultation questions in Annex A to this letter.

We respond to each of ORR s specific consultation questions in Annex A to this letter. Je Quill Office f Rail Regulatin One Kemble Street Lndn, WC2B 4AN Hannah Devesn Regulatry Refrm Specialist Netwrk Rail Kings Place, 90 Yrk Way Lndn, N1 9AG Email:hannah.devesn@netwrkrail.c.uk Telephne:

More information

1. Transformer A transformer is used to obtain the approximate output voltage of the power supply. The output of the transformer is still AC.

1. Transformer A transformer is used to obtain the approximate output voltage of the power supply. The output of the transformer is still AC. PHYSIS 536 Experiment 4: D Pwer Supply I. Intrductin The prcess f changing A t D is investigated in this experiment. An integrated circuit regulatr makes it easy t cnstruct a high-perfrmance vltage surce

More information

(2) Even if such a value of k was possible, the neutrons multiply

(2) Even if such a value of k was possible, the neutrons multiply CHANGE OF REACTOR Nuclear Thery - Curse 227 POWER WTH REACTVTY CHANGE n this lessn, we will cnsider hw neutrn density, neutrn flux and reactr pwer change when the multiplicatin factr, k, r the reactivity,

More information

Wagon Markings Guidelines

Wagon Markings Guidelines Versin / Status: V 3.0 / apprved Wagn Markings Guidelines 1. Intrductin Article 4, para 4 f the Safety Directive (2004/49/EG amended by 2008/110/EC) stipulates the respnsibility f each manufacturer, maintenance

More information

System Non-Synchronous Penetration Definition and Formulation

System Non-Synchronous Penetration Definition and Formulation System Nn-Synchrnus Penetratin Definitin and Frmulatin Operatinal Plicy 27 August 2018 Disclaimer EirGrid as the Transmissin System Operatr (TSO) fr Ireland, and SONI as the TSO fr Nrthern Ireland make

More information

CS 477/677 Analysis of Algorithms Fall 2007 Dr. George Bebis Course Project Due Date: 11/29/2007

CS 477/677 Analysis of Algorithms Fall 2007 Dr. George Bebis Course Project Due Date: 11/29/2007 CS 477/677 Analysis f Algrithms Fall 2007 Dr. Gerge Bebis Curse Prject Due Date: 11/29/2007 Part1: Cmparisn f Srting Algrithms (70% f the prject grade) The bjective f the first part f the assignment is

More information

AMERICAN PETROLEUM INSTITUTE API RP 581 RISK BASED INSPECTION BASE RESOURCE DOCUMENT BALLOT COVER PAGE

AMERICAN PETROLEUM INSTITUTE API RP 581 RISK BASED INSPECTION BASE RESOURCE DOCUMENT BALLOT COVER PAGE Ballt ID: Title: USING LIFE EXTENSION FACTOR (LEF) TO INCREASE BUNDLE INSPECTION INTERVAL Purpse: 1. Prvides a methd t increase a bundle s inspectin interval t accunt fr LEF. 2. Clarifies Table 8.6.5 Als

More information

Hypothesis Tests for One Population Mean

Hypothesis Tests for One Population Mean Hypthesis Tests fr One Ppulatin Mean Chapter 9 Ala Abdelbaki Objective Objective: T estimate the value f ne ppulatin mean Inferential statistics using statistics in rder t estimate parameters We will be

More information

Department of Electrical Engineering, University of Waterloo. Introduction

Department of Electrical Engineering, University of Waterloo. Introduction Sectin 4: Sequential Circuits Majr Tpics Types f sequential circuits Flip-flps Analysis f clcked sequential circuits Mre and Mealy machines Design f clcked sequential circuits State transitin design methd

More information

Document for ENES5 meeting

Document for ENES5 meeting HARMONISATION OF EXPOSURE SCENARIO SHORT TITLES Dcument fr ENES5 meeting Paper jintly prepared by ECHA Cefic DUCC ESCOM ES Shrt Titles Grup 13 Nvember 2013 OBJECTIVES FOR ENES5 The bjective f this dcument

More information

Product authorisation in case of in situ generation

Product authorisation in case of in situ generation Prduct authrisatin in case f in situ generatin Intrductin At the 74 th CA meeting (27-29 September 2017), Aqua Eurpa and ECA Cnsrtium presented their cncerns and prpsals n the management f the prduct authrisatin

More information

Bicycle Generator Dump Load Control Circuit: An Op Amp Comparator with Hysteresis

Bicycle Generator Dump Load Control Circuit: An Op Amp Comparator with Hysteresis Bicycle Generatr Dump Lad Cntrl Circuit: An Op Amp Cmparatr with Hysteresis Sustainable Technlgy Educatin Prject University f Waterl http://www.step.uwaterl.ca December 1, 2009 1 Summary This dcument describes

More information

Physics 2B Chapter 23 Notes - Faraday s Law & Inductors Spring 2018

Physics 2B Chapter 23 Notes - Faraday s Law & Inductors Spring 2018 Michael Faraday lived in the Lndn area frm 1791 t 1867. He was 29 years ld when Hand Oersted, in 1820, accidentally discvered that electric current creates magnetic field. Thrugh empirical bservatin and

More information

Applying Kirchoff s law on the primary circuit. V = - e1 V+ e1 = 0 V.D. e.m.f. From the secondary circuit e2 = v2. K e. Equivalent circuit :

Applying Kirchoff s law on the primary circuit. V = - e1 V+ e1 = 0 V.D. e.m.f. From the secondary circuit e2 = v2. K e. Equivalent circuit : TRANSFORMERS Definitin : Transfrmers can be defined as a static electric machine which cnverts electric energy frm ne ptential t anther at the same frequency. It can als be defined as cnsists f tw electric

More information

Differentiation Applications 1: Related Rates

Differentiation Applications 1: Related Rates Differentiatin Applicatins 1: Related Rates 151 Differentiatin Applicatins 1: Related Rates Mdel 1: Sliding Ladder 10 ladder y 10 ladder 10 ladder A 10 ft ladder is leaning against a wall when the bttm

More information

1.1 The main transmission network of Eskom The classical two generator model 11

1.1 The main transmission network of Eskom The classical two generator model 11 LIST OF FIGURS Figure Page 1.1 The main transmissin netwrk f skm 4 2.1 The classical tw generatr mdel 11 2.2 Obtaining the lcatin f the electrical centre. The line cnnecting A with B represents the netwrk

More information

Five Whys How To Do It Better

Five Whys How To Do It Better Five Whys Definitin. As explained in the previus article, we define rt cause as simply the uncvering f hw the current prblem came int being. Fr a simple causal chain, it is the entire chain. Fr a cmplex

More information

Synchronous Motor V-Curves

Synchronous Motor V-Curves Synchrnus Mtr V-Curves 1 Synchrnus Mtr V-Curves Intrductin Synchrnus mtrs are used in applicatins such as textile mills where cnstant speed peratin is critical. Mst small synchrnus mtrs cntain squirrel

More information

We can see from the graph above that the intersection is, i.e., [ ).

We can see from the graph above that the intersection is, i.e., [ ). MTH 111 Cllege Algebra Lecture Ntes July 2, 2014 Functin Arithmetic: With nt t much difficulty, we ntice that inputs f functins are numbers, and utputs f functins are numbers. S whatever we can d with

More information

This section is primarily focused on tools to aid us in finding roots/zeros/ -intercepts of polynomials. Essentially, our focus turns to solving.

This section is primarily focused on tools to aid us in finding roots/zeros/ -intercepts of polynomials. Essentially, our focus turns to solving. Sectin 3.2: Many f yu WILL need t watch the crrespnding vides fr this sectin n MyOpenMath! This sectin is primarily fcused n tls t aid us in finding rts/zers/ -intercepts f plynmials. Essentially, ur fcus

More information

Thermodynamics Partial Outline of Topics

Thermodynamics Partial Outline of Topics Thermdynamics Partial Outline f Tpics I. The secnd law f thermdynamics addresses the issue f spntaneity and invlves a functin called entrpy (S): If a prcess is spntaneus, then Suniverse > 0 (2 nd Law!)

More information

CHM112 Lab Graphing with Excel Grading Rubric

CHM112 Lab Graphing with Excel Grading Rubric Name CHM112 Lab Graphing with Excel Grading Rubric Criteria Pints pssible Pints earned Graphs crrectly pltted and adhere t all guidelines (including descriptive title, prperly frmatted axes, trendline

More information

Experiment #3. Graphing with Excel

Experiment #3. Graphing with Excel Experiment #3. Graphing with Excel Study the "Graphing with Excel" instructins that have been prvided. Additinal help with learning t use Excel can be fund n several web sites, including http://www.ncsu.edu/labwrite/res/gt/gt-

More information

ALE 21. Gibbs Free Energy. At what temperature does the spontaneity of a reaction change?

ALE 21. Gibbs Free Energy. At what temperature does the spontaneity of a reaction change? Name Chem 163 Sectin: Team Number: ALE 21. Gibbs Free Energy (Reference: 20.3 Silberberg 5 th editin) At what temperature des the spntaneity f a reactin change? The Mdel: The Definitin f Free Energy S

More information

INSTRUCTIONAL PLAN Day 2

INSTRUCTIONAL PLAN Day 2 INSTRUCTIONAL PLAN Day 2 Subject: Trignmetry Tpic: Other Trignmetric Ratis, Relatinships between Trignmetric Ratis, and Inverses Target Learners: Cllege Students Objectives: At the end f the lessn, students

More information

GENERAL FORMULAS FOR FLAT-TOPPED WAVEFORMS. J.e. Sprott. Plasma Studies. University of Wisconsin

GENERAL FORMULAS FOR FLAT-TOPPED WAVEFORMS. J.e. Sprott. Plasma Studies. University of Wisconsin GENERAL FORMULAS FOR FLAT-TOPPED WAVEFORMS J.e. Sprtt PLP 924 September 1984 Plasma Studies University f Wiscnsin These PLP Reprts are infrmal and preliminary and as such may cntain errrs nt yet eliminated.

More information

Supplementary Course Notes Adding and Subtracting AC Voltages and Currents

Supplementary Course Notes Adding and Subtracting AC Voltages and Currents Supplementary Curse Ntes Adding and Subtracting AC Vltages and Currents As mentined previusly, when cmbining DC vltages r currents, we nly need t knw the plarity (vltage) and directin (current). In the

More information

READING STATECHART DIAGRAMS

READING STATECHART DIAGRAMS READING STATECHART DIAGRAMS Figure 4.48 A Statechart diagram with events The diagram in Figure 4.48 shws all states that the bject plane can be in during the curse f its life. Furthermre, it shws the pssible

More information

Module 4: General Formulation of Electric Circuit Theory

Module 4: General Formulation of Electric Circuit Theory Mdule 4: General Frmulatin f Electric Circuit Thery 4. General Frmulatin f Electric Circuit Thery All electrmagnetic phenmena are described at a fundamental level by Maxwell's equatins and the assciated

More information

Name: Block: Date: Science 10: The Great Geyser Experiment A controlled experiment

Name: Block: Date: Science 10: The Great Geyser Experiment A controlled experiment Science 10: The Great Geyser Experiment A cntrlled experiment Yu will prduce a GEYSER by drpping Ments int a bttle f diet pp Sme questins t think abut are: What are yu ging t test? What are yu ging t measure?

More information

POWER AMPLIFIERS. 1. Explain what are classes A, B, AB and C amplifiers in terms of DC biasing using a MOSFET drain characteristic.

POWER AMPLIFIERS. 1. Explain what are classes A, B, AB and C amplifiers in terms of DC biasing using a MOSFET drain characteristic. CTONIC 3 XCI OW AMII. xpla what are classes A, B, AB and C amplifiers terms f DC biasg usg a MOT dra characteristic.. efer t the graphs f page and the table at the tp f page 3 f the thery ntes t answer

More information

Sections 15.1 to 15.12, 16.1 and 16.2 of the textbook (Robbins-Miller) cover the materials required for this topic.

Sections 15.1 to 15.12, 16.1 and 16.2 of the textbook (Robbins-Miller) cover the materials required for this topic. Tpic : AC Fundamentals, Sinusidal Wavefrm, and Phasrs Sectins 5. t 5., 6. and 6. f the textbk (Rbbins-Miller) cver the materials required fr this tpic.. Wavefrms in electrical systems are current r vltage

More information

Trigonometric Ratios Unit 5 Tentative TEST date

Trigonometric Ratios Unit 5 Tentative TEST date 1 U n i t 5 11U Date: Name: Trignmetric Ratis Unit 5 Tentative TEST date Big idea/learning Gals In this unit yu will extend yur knwledge f SOH CAH TOA t wrk with btuse and reflex angles. This extensin

More information

BASIC DIRECT-CURRENT MEASUREMENTS

BASIC DIRECT-CURRENT MEASUREMENTS Brwn University Physics 0040 Intrductin BASIC DIRECT-CURRENT MEASUREMENTS The measurements described here illustrate the peratin f resistrs and capacitrs in electric circuits, and the use f sme standard

More information

Study Group Report: Plate-fin Heat Exchangers: AEA Technology

Study Group Report: Plate-fin Heat Exchangers: AEA Technology Study Grup Reprt: Plate-fin Heat Exchangers: AEA Technlgy The prblem under study cncerned the apparent discrepancy between a series f experiments using a plate fin heat exchanger and the classical thery

More information

Compressibility Effects

Compressibility Effects Definitin f Cmpressibility All real substances are cmpressible t sme greater r lesser extent; that is, when yu squeeze r press n them, their density will change The amunt by which a substance can be cmpressed

More information

Lab 11 LRC Circuits, Damped Forced Harmonic Motion

Lab 11 LRC Circuits, Damped Forced Harmonic Motion Physics 6 ab ab 11 ircuits, Damped Frced Harmnic Mtin What Yu Need T Knw: The Physics OK this is basically a recap f what yu ve dne s far with circuits and circuits. Nw we get t put everything tgether

More information

Land Information New Zealand Topographic Strategy DRAFT (for discussion)

Land Information New Zealand Topographic Strategy DRAFT (for discussion) Land Infrmatin New Zealand Tpgraphic Strategy DRAFT (fr discussin) Natinal Tpgraphic Office Intrductin The Land Infrmatin New Zealand Tpgraphic Strategy will prvide directin fr the cllectin and maintenance

More information

SFDMB3638F. Specifications and Applications Information. orce LED Driver. Mass: 7 grams typ. 10/15/08 Preliminary. Package Configuration

SFDMB3638F. Specifications and Applications Information. orce LED Driver. Mass: 7 grams typ. 10/15/08 Preliminary. Package Configuration Specificatins and Applicatins Infrmatin 1/1/8 Prelimary Smart Fr rce LED Driver The ERG Smart Frce Series f LED Drivers are specifically designed fr applicatins which require high efficiency, small ftprt

More information

Protection of ungrounded systems using an advanced relay element

Protection of ungrounded systems using an advanced relay element ENG 460 Prtectin f ungrunded systems using an advanced relay element A reprt submitted t the schl f Engineering and Energy, Murdch University in partial fulfilment f the requirements fr the degree f Bachelr

More information

Supplementary Course Notes Adding and Subtracting AC Voltages and Currents

Supplementary Course Notes Adding and Subtracting AC Voltages and Currents Supplementary Curse Ntes Adding and Subtracting AC Vltages and Currents As mentined previusly, when cmbining DC vltages r currents, we nly need t knw the plarity (vltage) and directin (current). In the

More information

Copyright Paul Tobin 63

Copyright Paul Tobin 63 DT, Kevin t. lectric Circuit Thery DT87/ Tw-Prt netwrk parameters ummary We have seen previusly that a tw-prt netwrk has a pair f input terminals and a pair f utput terminals figure. These circuits were

More information

How do scientists measure trees? What is DBH?

How do scientists measure trees? What is DBH? Hw d scientists measure trees? What is DBH? Purpse Students develp an understanding f tree size and hw scientists measure trees. Students bserve and measure tree ckies and explre the relatinship between

More information

Series and Parallel Resonances

Series and Parallel Resonances Series and Parallel esnances Series esnance Cnsider the series circuit shwn in the frequency dmain. The input impedance is Z Vs jl jl I jc C H s esnance ccurs when the imaginary part f the transfer functin

More information

CHAPTER 2 Algebraic Expressions and Fundamental Operations

CHAPTER 2 Algebraic Expressions and Fundamental Operations CHAPTER Algebraic Expressins and Fundamental Operatins OBJECTIVES: 1. Algebraic Expressins. Terms. Degree. Gruping 5. Additin 6. Subtractin 7. Multiplicatin 8. Divisin Algebraic Expressin An algebraic

More information

arxiv:hep-ph/ v1 2 Jun 1995

arxiv:hep-ph/ v1 2 Jun 1995 WIS-95//May-PH The rati F n /F p frm the analysis f data using a new scaling variable S. A. Gurvitz arxiv:hep-ph/95063v1 Jun 1995 Department f Particle Physics, Weizmann Institute f Science, Rehvt 76100,

More information

A Novel Isolated Buck-Boost Converter

A Novel Isolated Buck-Boost Converter vel slated uck-st Cnverter S-Sek Kim *,WOO-J JG,JOOG-HO SOG, Ok-K Kang, and Hee-Jn Kim ept. f Electrical Eng., Seul atinal University f Technlgy, Krea Schl f Electrical and Cmputer Eng., Hanyang University,

More information

37 Maxwell s Equations

37 Maxwell s Equations 37 Maxwell s quatins In this chapter, the plan is t summarize much f what we knw abut electricity and magnetism in a manner similar t the way in which James Clerk Maxwell summarized what was knwn abut

More information

ECEN 4872/5827 Lecture Notes

ECEN 4872/5827 Lecture Notes ECEN 4872/5827 Lecture Ntes Lecture #5 Objectives fr lecture #5: 1. Analysis f precisin current reference 2. Appraches fr evaluating tlerances 3. Temperature Cefficients evaluatin technique 4. Fundamentals

More information

Supporting information

Supporting information Electrnic Supplementary Material (ESI) fr Physical Chemistry Chemical Physics This jurnal is The wner Scieties 01 ydrgen perxide electrchemistry n platinum: twards understanding the xygen reductin reactin

More information

Verification of NIMs Baseline Data Reports and Methodology Reports

Verification of NIMs Baseline Data Reports and Methodology Reports hzkwekdd/^^/ke /ZdKZd 'EZ> >/Ddd/KE / D ' d h d^ dddd Verificatin f NIMs Baseline Data Reprts and Methdlgy Reprts & dd dddd d d /EdZKhd/KE d > Z d / d K d d ZK'E/d/KEK&sZ/&/Z^ d d e d d,sz/&/d/kewzk^^

More information

THERMAL-VACUUM VERSUS THERMAL- ATMOSPHERIC TESTS OF ELECTRONIC ASSEMBLIES

THERMAL-VACUUM VERSUS THERMAL- ATMOSPHERIC TESTS OF ELECTRONIC ASSEMBLIES PREFERRED RELIABILITY PAGE 1 OF 5 PRACTICES PRACTICE NO. PT-TE-1409 THERMAL-VACUUM VERSUS THERMAL- ATMOSPHERIC Practice: Perfrm all thermal envirnmental tests n electrnic spaceflight hardware in a flight-like

More information

Interference is when two (or more) sets of waves meet and combine to produce a new pattern.

Interference is when two (or more) sets of waves meet and combine to produce a new pattern. Interference Interference is when tw (r mre) sets f waves meet and cmbine t prduce a new pattern. This pattern can vary depending n the riginal wave directin, wavelength, amplitude, etc. The tw mst extreme

More information

Lecture 02 CSE 40547/60547 Computing at the Nanoscale

Lecture 02 CSE 40547/60547 Computing at the Nanoscale PN Junctin Ntes: Lecture 02 CSE 40547/60547 Cmputing at the Nanscale Letʼs start with a (very) shrt review f semi-cnducting materials: - N-type material: Obtained by adding impurity with 5 valence elements

More information

Preparation work for A2 Mathematics [2017]

Preparation work for A2 Mathematics [2017] Preparatin wrk fr A2 Mathematics [2017] The wrk studied in Y12 after the return frm study leave is frm the Cre 3 mdule f the A2 Mathematics curse. This wrk will nly be reviewed during Year 13, it will

More information

BASD HIGH SCHOOL FORMAL LAB REPORT

BASD HIGH SCHOOL FORMAL LAB REPORT BASD HIGH SCHOOL FORMAL LAB REPORT *WARNING: After an explanatin f what t include in each sectin, there is an example f hw the sectin might lk using a sample experiment Keep in mind, the sample lab used

More information

ECE 2100 Circuit Analysis

ECE 2100 Circuit Analysis ECE 2100 Circuit Analysis Lessn 25 Chapter 9 & App B: Passive circuit elements in the phasr representatin Daniel M. Litynski, Ph.D. http://hmepages.wmich.edu/~dlitynsk/ ECE 2100 Circuit Analysis Lessn

More information

Transduction Based on Changes in the Energy Stored in an Electrical Field

Transduction Based on Changes in the Energy Stored in an Electrical Field Lecture 6-3 Transductin Based n Changes in the Energy Stred in an Electrical ield Department f Mechanical Engineering Example:Capacitive Pressure Sensr Pressure sensitive capacitive device With separatin

More information

Technical Committee Noise. Minutes of the 11 th Meeting

Technical Committee Noise. Minutes of the 11 th Meeting Technical Cmmittee Nise within the Eurpean Acustics Assciatin EAA Minutes f the 11 th Meeting held n May 28 th, 2018, in Crete Time and Place The meeting was scheduled n May 28 th, 2018, frm 19:00 h t

More information

NUROP CONGRESS PAPER CHINESE PINYIN TO CHINESE CHARACTER CONVERSION

NUROP CONGRESS PAPER CHINESE PINYIN TO CHINESE CHARACTER CONVERSION NUROP Chinese Pinyin T Chinese Character Cnversin NUROP CONGRESS PAPER CHINESE PINYIN TO CHINESE CHARACTER CONVERSION CHIA LI SHI 1 AND LUA KIM TENG 2 Schl f Cmputing, Natinal University f Singapre 3 Science

More information

EXPERIMENTAL STUDY ON DISCHARGE COEFFICIENT OF OUTFLOW OPENING FOR PREDICTING CROSS-VENTILATION FLOW RATE

EXPERIMENTAL STUDY ON DISCHARGE COEFFICIENT OF OUTFLOW OPENING FOR PREDICTING CROSS-VENTILATION FLOW RATE EXPERIMENTAL STUD ON DISCHARGE COEFFICIENT OF OUTFLOW OPENING FOR PREDICTING CROSS-VENTILATION FLOW RATE Tmnbu Gt, Masaaki Ohba, Takashi Kurabuchi 2, Tmyuki End 3, shihik Akamine 4, and Tshihir Nnaka 2

More information

Writing Guidelines. (Updated: November 25, 2009) Forwards

Writing Guidelines. (Updated: November 25, 2009) Forwards Writing Guidelines (Updated: Nvember 25, 2009) Frwards I have fund in my review f the manuscripts frm ur students and research assciates, as well as thse submitted t varius jurnals by thers that the majr

More information

20 Faraday s Law and Maxwell s Extension to Ampere s Law

20 Faraday s Law and Maxwell s Extension to Ampere s Law Chapter 20 Faraday s Law and Maxwell s Extensin t Ampere s Law 20 Faraday s Law and Maxwell s Extensin t Ampere s Law Cnsider the case f a charged particle that is ming in the icinity f a ming bar magnet

More information

Application of ILIUM to the estimation of the T eff [Fe/H] pair from BP/RP

Application of ILIUM to the estimation of the T eff [Fe/H] pair from BP/RP Applicatin f ILIUM t the estimatin f the T eff [Fe/H] pair frm BP/RP prepared by: apprved by: reference: issue: 1 revisin: 1 date: 2009-02-10 status: Issued Cryn A.L. Bailer-Jnes Max Planck Institute fr

More information

Physics 2010 Motion with Constant Acceleration Experiment 1

Physics 2010 Motion with Constant Acceleration Experiment 1 . Physics 00 Mtin with Cnstant Acceleratin Experiment In this lab, we will study the mtin f a glider as it accelerates dwnhill n a tilted air track. The glider is supprted ver the air track by a cushin

More information

CAUSAL INFERENCE. Technical Track Session I. Phillippe Leite. The World Bank

CAUSAL INFERENCE. Technical Track Session I. Phillippe Leite. The World Bank CAUSAL INFERENCE Technical Track Sessin I Phillippe Leite The Wrld Bank These slides were develped by Christel Vermeersch and mdified by Phillippe Leite fr the purpse f this wrkshp Plicy questins are causal

More information

ECE 2100 Circuit Analysis

ECE 2100 Circuit Analysis ECE 00 Circuit Analysis Lessn 6 Chapter 4 Sec 4., 4.5, 4.7 Series LC Circuit C Lw Pass Filter Daniel M. Litynski, Ph.D. http://hmepages.wmich.edu/~dlitynsk/ ECE 00 Circuit Analysis Lessn 5 Chapter 9 &

More information

I. Analytical Potential and Field of a Uniform Rod. V E d. The definition of electric potential difference is

I. Analytical Potential and Field of a Uniform Rod. V E d. The definition of electric potential difference is Length L>>a,b,c Phys 232 Lab 4 Ch 17 Electric Ptential Difference Materials: whitebards & pens, cmputers with VPythn, pwer supply & cables, multimeter, crkbard, thumbtacks, individual prbes and jined prbes,

More information

OTHER USES OF THE ICRH COUPL ING CO IL. November 1975

OTHER USES OF THE ICRH COUPL ING CO IL. November 1975 OTHER USES OF THE ICRH COUPL ING CO IL J. C. Sprtt Nvember 1975 -I,," PLP 663 Plasma Studies University f Wiscnsin These PLP Reprts are infrmal and preliminary and as such may cntain errrs nt yet eliminated.

More information

Exam #1. A. Answer any 1 of the following 2 questions. CEE 371 October 8, Please grade the following questions: 1 or 2

Exam #1. A. Answer any 1 of the following 2 questions. CEE 371 October 8, Please grade the following questions: 1 or 2 CEE 371 Octber 8, 2009 Exam #1 Clsed Bk, ne sheet f ntes allwed Please answer ne questin frm the first tw, ne frm the secnd tw and ne frm the last three. The ttal ptential number f pints is 100. Shw all

More information

IN a recent article, Geary [1972] discussed the merit of taking first differences

IN a recent article, Geary [1972] discussed the merit of taking first differences The Efficiency f Taking First Differences in Regressin Analysis: A Nte J. A. TILLMAN IN a recent article, Geary [1972] discussed the merit f taking first differences t deal with the prblems that trends

More information

ECE 5318/6352 Antenna Engineering. Spring 2006 Dr. Stuart Long. Chapter 6. Part 7 Schelkunoff s Polynomial

ECE 5318/6352 Antenna Engineering. Spring 2006 Dr. Stuart Long. Chapter 6. Part 7 Schelkunoff s Polynomial ECE 538/635 Antenna Engineering Spring 006 Dr. Stuart Lng Chapter 6 Part 7 Schelkunff s Plynmial 7 Schelkunff s Plynmial Representatin (fr discrete arrays) AF( ψ ) N n 0 A n e jnψ N number f elements in

More information

Heat Management Methodology for Successful UV Processing on Heat Sensitive Substrates

Heat Management Methodology for Successful UV Processing on Heat Sensitive Substrates Heat Management Methdlgy fr Successful UV Prcessing n Heat Sensitive Substrates Juliet Midlik Prime UV Systems Abstract: Nw in 2005, UV systems pssess heat management cntrls that fine tune the exthermic

More information

making triangle (ie same reference angle) ). This is a standard form that will allow us all to have the X= y=

making triangle (ie same reference angle) ). This is a standard form that will allow us all to have the X= y= Intrductin t Vectrs I 21 Intrductin t Vectrs I 22 I. Determine the hrizntal and vertical cmpnents f the resultant vectr by cunting n the grid. X= y= J. Draw a mangle with hrizntal and vertical cmpnents

More information

Biplots in Practice MICHAEL GREENACRE. Professor of Statistics at the Pompeu Fabra University. Chapter 13 Offprint

Biplots in Practice MICHAEL GREENACRE. Professor of Statistics at the Pompeu Fabra University. Chapter 13 Offprint Biplts in Practice MICHAEL GREENACRE Prfessr f Statistics at the Pmpeu Fabra University Chapter 13 Offprint CASE STUDY BIOMEDICINE Cmparing Cancer Types Accrding t Gene Epressin Arrays First published:

More information

Getting Involved O. Responsibilities of a Member. People Are Depending On You. Participation Is Important. Think It Through

Getting Involved O. Responsibilities of a Member. People Are Depending On You. Participation Is Important. Think It Through f Getting Invlved O Literature Circles can be fun. It is exciting t be part f a grup that shares smething. S get invlved, read, think, and talk abut bks! Respnsibilities f a Member Remember a Literature

More information

AP Statistics Notes Unit Two: The Normal Distributions

AP Statistics Notes Unit Two: The Normal Distributions AP Statistics Ntes Unit Tw: The Nrmal Distributins Syllabus Objectives: 1.5 The student will summarize distributins f data measuring the psitin using quartiles, percentiles, and standardized scres (z-scres).

More information

Verification of Quality Parameters of a Solar Panel and Modification in Formulae of its Series Resistance

Verification of Quality Parameters of a Solar Panel and Modification in Formulae of its Series Resistance Verificatin f Quality Parameters f a Slar Panel and Mdificatin in Frmulae f its Series Resistance Sanika Gawhane Pune-411037-India Onkar Hule Pune-411037- India Chinmy Kulkarni Pune-411037-India Ojas Pandav

More information

Phys. 344 Ch 7 Lecture 8 Fri., April. 10 th,

Phys. 344 Ch 7 Lecture 8 Fri., April. 10 th, Phys. 344 Ch 7 Lecture 8 Fri., April. 0 th, 009 Fri. 4/0 8. Ising Mdel f Ferrmagnets HW30 66, 74 Mn. 4/3 Review Sat. 4/8 3pm Exam 3 HW Mnday: Review fr est 3. See n-line practice test lecture-prep is t

More information

Thermodynamics and Equilibrium

Thermodynamics and Equilibrium Thermdynamics and Equilibrium Thermdynamics Thermdynamics is the study f the relatinship between heat and ther frms f energy in a chemical r physical prcess. We intrduced the thermdynamic prperty f enthalpy,

More information

ELECTRON CYCLOTRON HEATING OF AN ANISOTROPIC PLASMA. December 4, PLP No. 322

ELECTRON CYCLOTRON HEATING OF AN ANISOTROPIC PLASMA. December 4, PLP No. 322 ELECTRON CYCLOTRON HEATING OF AN ANISOTROPIC PLASMA by J. C. SPROTT December 4, 1969 PLP N. 3 These PLP Reprts are infrmal and preliminary and as such may cntain errrs nt yet eliminated. They are fr private

More information

4th Indian Institute of Astrophysics - PennState Astrostatistics School July, 2013 Vainu Bappu Observatory, Kavalur. Correlation and Regression

4th Indian Institute of Astrophysics - PennState Astrostatistics School July, 2013 Vainu Bappu Observatory, Kavalur. Correlation and Regression 4th Indian Institute f Astrphysics - PennState Astrstatistics Schl July, 2013 Vainu Bappu Observatry, Kavalur Crrelatin and Regressin Rahul Ry Indian Statistical Institute, Delhi. Crrelatin Cnsider a tw

More information

Kinetic Model Completeness

Kinetic Model Completeness 5.68J/10.652J Spring 2003 Lecture Ntes Tuesday April 15, 2003 Kinetic Mdel Cmpleteness We say a chemical kinetic mdel is cmplete fr a particular reactin cnditin when it cntains all the species and reactins

More information

Preparation work for A2 Mathematics [2018]

Preparation work for A2 Mathematics [2018] Preparatin wrk fr A Mathematics [018] The wrk studied in Y1 will frm the fundatins n which will build upn in Year 13. It will nly be reviewed during Year 13, it will nt be retaught. This is t allw time

More information

CHEM Thermodynamics. Change in Gibbs Free Energy, G. Review. Gibbs Free Energy, G. Review

CHEM Thermodynamics. Change in Gibbs Free Energy, G. Review. Gibbs Free Energy, G. Review Review Accrding t the nd law f Thermdynamics, a prcess is spntaneus if S universe = S system + S surrundings > 0 Even thugh S system

More information

An Introduction to Symmetrical Components, System Modeling and Fault Calculation

An Introduction to Symmetrical Components, System Modeling and Fault Calculation An ntrductin t Symmetrical Cmpnents, System Mdeling and Fault Calculatin Presented at the 3 th Annual HANDS-ON Relay Schl March 6 -, 5 Washingtn State University Pullman, Washingtn By Stephen Marx, and

More information

**DO NOT ONLY RELY ON THIS STUDY GUIDE!!!**

**DO NOT ONLY RELY ON THIS STUDY GUIDE!!!** Tpics lists: UV-Vis Absrbance Spectrscpy Lab & ChemActivity 3-6 (nly thrugh 4) I. UV-Vis Absrbance Spectrscpy Lab Beer s law Relates cncentratin f a chemical species in a slutin and the absrbance f that

More information

Bootstrap Method > # Purpose: understand how bootstrap method works > obs=c(11.96, 5.03, 67.40, 16.07, 31.50, 7.73, 11.10, 22.38) > n=length(obs) >

Bootstrap Method > # Purpose: understand how bootstrap method works > obs=c(11.96, 5.03, 67.40, 16.07, 31.50, 7.73, 11.10, 22.38) > n=length(obs) > Btstrap Methd > # Purpse: understand hw btstrap methd wrks > bs=c(11.96, 5.03, 67.40, 16.07, 31.50, 7.73, 11.10, 22.38) > n=length(bs) > mean(bs) [1] 21.64625 > # estimate f lambda > lambda = 1/mean(bs);

More information

SUPPLEMENTARY MATERIAL GaGa: a simple and flexible hierarchical model for microarray data analysis

SUPPLEMENTARY MATERIAL GaGa: a simple and flexible hierarchical model for microarray data analysis SUPPLEMENTARY MATERIAL GaGa: a simple and flexible hierarchical mdel fr micrarray data analysis David Rssell Department f Bistatistics M.D. Andersn Cancer Center, Hustn, TX 77030, USA rsselldavid@gmail.cm

More information

Exam #1. A. Answer any 1 of the following 2 questions. CEE 371 March 10, Please grade the following questions: 1 or 2

Exam #1. A. Answer any 1 of the following 2 questions. CEE 371 March 10, Please grade the following questions: 1 or 2 CEE 371 March 10, 2009 Exam #1 Clsed Bk, ne sheet f ntes allwed Please answer ne questin frm the first tw, ne frm the secnd tw and ne frm the last three. The ttal ptential number f pints is 100. Shw all

More information

Lead/Lag Compensator Frequency Domain Properties and Design Methods

Lead/Lag Compensator Frequency Domain Properties and Design Methods Lectures 6 and 7 Lead/Lag Cmpensatr Frequency Dmain Prperties and Design Methds Definitin Cnsider the cmpensatr (ie cntrller Fr, it is called a lag cmpensatr s K Fr s, it is called a lead cmpensatr Ntatin

More information

Comment on John Taylor: Rules Versus Discretion: Assessing the Debate over the Conduct of Monetary Policy

Comment on John Taylor: Rules Versus Discretion: Assessing the Debate over the Conduct of Monetary Policy Cmment n Jhn Taylr: Rules Versus Discretin: Assessing the Debate ver the Cnduct f Mnetary Plicy Octber 13th, 2017 Dnald Khn Rbert V. Rsa Chair in Internatinal Ecnmics Senir Fellw, Ecnmic Studies The Brkings

More information

Displacement and Deflection Sensitivity of Gas-coupled Laser Acoustic. Detector

Displacement and Deflection Sensitivity of Gas-coupled Laser Acoustic. Detector 1st Internatinal Sympsium n Laser Ultrasnics: Science, echnlgy and Applicatins July 16-18 008, Mntreal, Canada Displacement and Deflectin Sensitivity f Gas-cupled Laser Acustic Detectin James N. CARON

More information

Assume that the water in the nozzle is accelerated at a rate such that the frictional effect can be neglected.

Assume that the water in the nozzle is accelerated at a rate such that the frictional effect can be neglected. 1 HW #3: Cnservatin f Linear Mmentum, Cnservatin f Energy, Cnservatin f Angular Mmentum and Turbmachines, Bernulli s Equatin, Dimensinal Analysis, and Pipe Flws Prblem 1. Cnservatins f Mass and Linear

More information