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WAMS,(,400030):,(WAMS),,,,:;;WAMS;;:TM774;TM732:2008209216;:2009202210(973)(2004CB217908);(50777068)0[125],[6],1996[7],,,[829],,[10211],,,,,(WAMS),WAMS,,WAMS,,,WAMS,11.1,:1),,,,,,2),,,113392009510Vol.33No.9May10,20091.2WAMS,,,()A/D(CPU),1,,(),,(SCADA)(EMS),,(PMU)WAMS,[12],,1P1,P2PMU1PMUFig.1SignalsamplingofrelayprotectionandPMU2,PMU,PMU,,;WAMS,PMU,2Fig.2StructureofhiddenfailuresmonitoringsystemXii,PMU(APMUA)i=1,2,,n;n,,nPMU1,:1)PMU:X=1nni=1Xi(1)2):di=Xi-X(2)3)didj:dj=max|di|1in(3)4)djXj,Xj:X=1n-1ni=1,ijXi(4)5)zd,212009,33(9):|Xj-X||X|zd(5)jPMU,,,,,,2WAMS2.1,,1(P1,P2),PMU,PMU1PMU2,PMUA,PMUA,Izd,,,,,PMUA:IPMUA=IPMU1A-IPMU2A(6)AIP1AIP2A,:|IPkA-IPMUA||IPMUA|zdk=1,2(7)(7):|IPkA-IPMUA||IPMUA|zd(8)Izd=|IPMUA|zd,(7):|IPkA-IPMUA|Izd(9)PMU,PMU,,22.2Izd,PMU,0,0:PMUI,:I=|IP-IPMU|=|(IP1-IP2)-(IPMU1-IPMU2)|(10)xyxy,xy=x+y,:I=P1+TAP1+P2+TAP2+PMU1+TAM1+PMU2+TAM2(11):PMUPMU;TAMPMU;P;TAP,,(11):I=2(PMU+TAM+P+TAP)(12)I,Izd:Izd2I(PMU+TAM+P+TAP)(13)2.3IzdPMU,,PMUPMU3PMU:IPMU1=Imcos(2ft+)(14)IPMU2=Imcos(2ft+++PMU)(15):Im;f;;;PMUPMU,:31,WAMS,7;PMU,1;,60:=2(7+1)+60=76(16),PMU:IPMU=IPMU1-IPMU2=2Imsin2ft+++PMU2sin+PMU2(17)PMU(GPS),PMU,1s[12],2PMU1sPMU0.036,PMUGPS,,,PMUGPS,,PMU,PMU=0,(17):IPMU=2Imsin2ft++2sin2(18)PMUMN:IP1=Imcos(2ft++P1)(19)IP2=Imcos(2ft+++P2)(20):P1P2MNPMU:IP=IP1-IP2=2Imsin2ft+++P1+P22sin+P2-P12(21)Izd:IzdI=2Imsin2ft++2sin2-sin2ft+++P1+P22sin+P2-P12(22)(22),PMU,,GPS,2,2,,;GPSGPS,[13],GPS,PMU,P1P2,Izd2.42.4.1,GPS,PMU,PMUIPMUI,PMU(0.2%0.5%)(13),Izd:Izd=2KKIPMU(0.007+TAM+TAP)(23):KK,1.11.22.4.2Izd,PMU,,2,,,5P10P1%3%1.1PMU,Izd:1)PMU0.55P,5A,Izd=21.15(0.007+0.005+0.01)=0.242(A)2)PMUPMU5P,5A,Izd=21.15(0.007+0.01+0.01)=0.297(A),PMUIzd,PMU412009,33(9)2.4.3Izd(22),Im=7.071A,f=50Hz,=0,:=76/180=1.326(rad)-1s1s,P1P2-0.00030.0003,I:IzdI=14.142|sin(314t+0.663)sin0.663-sin(314t+0.663)sin0.6633|=0.0033|sin(314t+0.8465)|,I0.0033/1.414=0.0024(A),I,1%,3,2,,,WAMS,WAMS,,,GPS,,[1]ELIZONDODC,DELAREEJ,PHADKEAG,etal.Hiddenfailuresinprotectionsystemsandtheirimpactonwide2areadisturbances//ProceedingsofIEEEPowerEngineeringSocietyWinterMeeting:Vol2,January282February1,2001,Columbus,OH,USA:7102714.[2]ELIZONDODC,DELAREEJ.Analysisofhiddenfailuresofprotectionschemesinlargeinterconnectedpowersystems//ProceedingsofIEEEPowerEngineeringSocietyGeneralMeeting:Vol1,June6210,2004,Denver,CO,USA:1072114.[3],,.2003.,2004,28(3):124.GANDeqiang,HUJiangyi,HANZhenxiang.Afterthe2003blackoutsacrossseveralcontinentals.AutomationofElectricPowerSystems,2004,28(3):124.[4]DELAREEJ,LIUY,MILIL,etal.Catastrophicfailuresinpowersystems:causes,analyses,andcountermeasures.ProceedingsoftheIEEE,2005,93(5):9562964.[5]..,2005,29(12):93297.LUZongxiang.Surveyoftheresearchonthecomplexityofpowergridsandreliabilityanalysisofblackouts.AutomationofElectricPowerSystems,2005,29(12):93297.[6]TAMRONGLAKS.Analysisofpowersystemdisturbancesduetorelayhiddenfailures[D].Blacksburg,VA,USA:VirginiaPolytechnicandStateUniversity,1994.[7]PHADKEAG,THORPJS.Exposehiddenfailurestopreventcascadingoutages[inpowersystems].IEEEComputerApplicationsinPower,1996,9(3):20223.[8],..,2007,31(6):19222.YIJun,ZHOUXiaoxin.Analysisonmethodofdecreasingtheriskofcascadingfailuresinpowersystemsbasedoncascadingfailuresearchingmodel.PowerSystemTechnology,2007,31(6):19222.[9],,,..,2005,29(6):87292.ZHUYongli,SONGShaoqun,ZHUGuoqiang,etal.Anintelligentsystemforon2lineverificationofrelaysettingsinsub2transmissionnetworks.AutomationofElectricPowerSystems,2005,29(6):87292.[10],,,..,2006,30(4):125,53.LBYing,SUNHongbin,ZHANGBoming,etal.Researchanddevelopmentofanonlineintelligentearlywarningsystemofprotectiverelaying.AutomationofElectricPowerSystems,2006,30(4):125,53.[11],,..,2006,30(7):982103.DINGJunce,CAIZexiang,WANGKeying.Anoverviewofstateestimationbasedonwide2areameasurementsystem.AutomationofElectricPowerSystems,2006,30(7):982103.[12],,..,2003,27(14):57261.YANGGuiyu,JIANGDaozhuo,QIUJiaju.Synchronousmeasurementprecisionofphasormeasurementunit.AutomationofElectricPowerSystems,2003,27(14):57261.[13],,.GPS.,2001,25(21):61265.GAOHoulei,JIANGShifang,HEJiali.DesignandtestingofGPSbasedcurrentdifferentialprotection.AutomationofElectricPowerSystems,2001,25(21):61265.(1962),,,,:E2mail:cquxxf@vip.sina.com(1975),,,,:E2mail:liuxf6271@163.com(19continuedonpage19)51,WAMScalculatingclosestpointcollapse.PowerSystemTechnology,2006,30(3):13217.[8],,..:,2004,33(6):26229.HEYu,PENGZhiwei,ZHANGJing.Computationofclosestvoltagecollapsepointinpowersystem.JournalofGuizhouUniversityofTechnology:NatureScienceEdition,2004,33(6):26229.[9],,,..,2008,32(3):123.CHANGNaichao,HEGuangyu,MEIShengwei,etal.Estimationoftheshortestradiusofpowersystemvoltagesecurityregioninnodeinjectionspace.AutomationofElectricPowerSystems,2008,32(3):123.[10]KATAOKAY.Aprobabilisticnodalloadingmodelandworstcasesolutionsforelectricpowersystemvoltagestabilityassessment.IEEETransonPowerSystems,2003,18(4):150721514.[11],,..,2008,28(1):6211.HUZechun,WANGXifan,CHENGHaozhong.Abilevelprogrammingformulationandtrustregionapproachforclosestcriticalpointofvoltagestability.ProceedingsoftheCSEE,2008,28(1
本文标题:基于WAMS的继电保护静态特性监视及其隐藏故障诊断
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