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1,,,。,,,,。2【1】2006322,110kV2(,110kV/35kV/10kV)。,,CT::IAH=0.6A242°,IBH=0.6A121°,ICH=0.6A2°:IAM=0.2A57°,IBM=0.2A298°,ICM=0.2A177°,,(462000):,。:;;:TM406:B:1001-8425(2009)10-0062-03AnalysisofWrongConnectionofSecondaryCircuitinMainTransformerDifferentialProtectionYUANZheng-hua,LIZhen-hai,LIUXiao-yan(LuohePowerSupplyCompany,Luohe462000,China)Abstract:Thecommonwrongconnectionsinmaintransformerdifferentialprotectionareanalyzed.Thecorrectionmeasuresarepresented.Keywords:Transformer;Differentialprotection;Analysis4610200910TRANSFORMERVol.46OctoberNo.102009,。6,,,,;,;,,。:2008-09-04:(1977-),,,,;(1965-),,,,。!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!、、10UABIAIBIC119°221°4Fig.4VectorgramofMVsideUIMLIALIAMIAHI242°57°7°1(A)Fig.1VectorgramofphaseA:IAL=0.3A7°,IBL=0.3A248°,ICL=0.3A129°0.2A()。:0.2A,,。,,。A,1。1,IAMIALIAH(),IMLIAH,I(,,)。IAHIAM、IAL,,,、(10%)。、60°,,、60°?Y/Y/D,CTD/D/Y,、—。IA1=IA-IB,IA2=IA-IC,60°(2),、IA1=IA-IBIA2=IA-IC(3)。,()。,(A),::IAH=0.6A191°:IAM=0.55A10°:IAL=0.19A16°,。、—,。【2】200711,110kV2(,110kV/35kV/10kV),::IAH=0.22A330°IBH=0.42A178°ICH=0.22A38°:IAM=0.58A0°IBM=0.59A220°ICM=0.58A119°,UAB。4。4,。UAB,CT。P=3姨UIcosφ、Q=3姨UIsinφIA1IAIA2ICIB60°2Fig.2VectorgramIAIBICIAIBIC(a)(b)3Fig.3Connectiondiagram6346ICIAIBIA′5AFig.5DiagramduringreverseconnectionofpolarityinphaseAICIBIA150°60°150°6Fig.6Diagriamafterconnectioncorrection1/A0.20.40.60.813579111315/V140156165172180186192197202205208209/V6581869093959696.596.5—Table1Testeddata,UABIA220°,IBIA,A、B,,IA、IBCT,。,,B3姨,,,IA、IC60°。A、CB150°。56,ACT,—,IAIC60°,ICIB150°,IBIA150°,IB3姨,,A,。,::IAH=0.33A358°IBH=0.32A127°ICH=0.32A231°:IAM=0.42A180°IBM=0.43A311°ICM=0.40A54°。【3】20036,220kV4(110kV/10kV)10kV,。,;CT。CT,;CT,10kVCT,5A~6A,13A~15A,1。1,。,10kVCT,。,;CT,,。3,CT、、—、。CT,,。CT,,。:2009-07-03:(1968-),,,,、。姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨姨220200965,9、252201“”。1,19922,,。64
本文标题:主变差动保护二次错误接线浅析
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