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特高压研究:,21,,,OvervoltageandInsulationCoordinationonUltraHighVoltagePowerTransmissionSysteminChina国家电力公司武汉高压研究所(武汉430074) 谷定燮,MOA,(MOA),AbstractRefertothedomesticandforeignresearchre-sults,thispaperpresentsthemajormethodsofsuppressingover-voltageandsecondarccurrentinUHVpowertrans-missionsystemwhichwillbebuildnextceutaryinChina.Italsogivestheover-voltagelevelandthesecondarccurrentlevelafterusingthesuppressingmethodsandtheparame-tersofMOA.Thispaper,basedonaboveanalysisandre-search,suggeststheinsulationlevelofthemainequipmentinUHVsystem(includingtransformer,circuitbreaker,disconnectingswitch,reactorandMOA),whichcanbeusedasareferencestoresearch,manufactureofUHVe-quipmentanddesignofpowersubstationandtransmissionline.KeywordsUHVovervoltageinsulationcoordiration0,2020,(),,1,,,(1)[1]:MOA,CTMOA,,,,,,0.2s,MOA,MOA,1,1.3P.U,,29199932511.3P.U(0.51s)1.4P.U(0.2s)1,1BPAAEPUm/kV1100120010501200160011001.31.5*1.441.351.31.11.31.4*1.61.6(1.8)1.71.51.61.6:*0.2s1.5P.U,,1.4P.U(0.2s)2,,,,,,,,,(HSGS),1s,HSGS2,GCBSF6,CB3MOA1.6P.U11.6P.U1.8P.U,,,1.6P.U1.6P.U1.6P.U,,500kV2.0P.U,,1.6P.U,,,,,4500kV,500kV,0-5,50MOA,MOA,,,[12,5]GIS18932208kV,25MOAMOA,(0.51s)(1.3P.U),(1.4P.U,0.2s)MOA,30Mar.1999HIGHVOLTAGEENGINEERINGVol.25No.11100kVMOA:Um826kVUc635kV20kA1550kV(10kA),1620kV(20kA)1400kV(2kA)Uw953kV(1.5P.U),0.55s66.122ULWP/kVUSWP/kVUW/kV195014251100(5min)952(1h)240019501100(5min)900(1h)225016751100(5min)952(1h),,;,,,MOA(20kA)1620kV,2250kV,1.389500kV,,2100kV,,2250kVMOA1400kV(2kA),1.559P.U,,1.15,1675kV,1.1965min1100kV,1h950kV(=1.51100/3)6.23,1800kV,1.2851675kV,1.1963Um/kVULWP/kVUSWP/kVUW/kV1100225015501100(1min)952(30min)BPA120021751800105022501675110022501800(1675)1100(1min)952(30min)6.3,,2550kV,2100kVMOA,7,600(101.5)ms;30ms84,,1800m,,4m3.096.5,6.66.62.407.0,6.52.42.66.5,6.2,2.4mUpm=0.5d[4],Upm(),MV;d,m;,,2.42.6m31199932511100kV,1200kV,2.4m,(,33.6%),,1.812002/3=1764kV,1.611002/3=1437kV,1.228,,,Us1.6P.U,Us=1437kV,6.5m()6.2m()(CFO)1737kV,5%,CFO(1-3)Us99.1:1.3P.U(1s),1.5P.U(0.2s)1.6P.U9.2MOA826kV,20kA,(20kA)1620kV,(2kA)1400kV9.32250kV,1675kV,1100kV(5min)950kV(1h)9.42250kV,1800kV,1100kV(1min)950(30min)9.52250kV;1800kV(1675kV);1100kV(5min)950kV(1h)9.62.42.6m;6.5m()6.2m()1..,1998,31(11):672.,19873/.,19954..:,19875.,1997(1998-10-15)1964,,:(027)87445936(28)1985314,7,,5a.,CO,,,,b.,,:,;,;,,1KanHetal.Proposalsforanimprovementintrans-formerdiagnosisusingdissolvedgasanalysis(DGA).IEEEElect.Insul.Magazine,1995,11(6):152IECPublication599.Interpretationfortheanalysisofgasesintransformersandotheroil-filledelectricale-quipmentinservice.19783..,1995,21(3):794KinoshitaHetal.Judgmentofelectricalinsulationdete-riorationbygasanalysistestonoilinsulationpowertransformer.TransIEEJ2/74,94-B(2):65(1998-07-21)1968,,,:(010)6278216632Mar.1999HIGHVOLTAGEENGINEERINGVol.25No.1