电压互感器二次回路异常的原因及对策

:2000-10-23;:2001-03-191,1,2(11,401147;21,233000):,3,,,,:;;:TM451:B:1006-6047(2001)11-0073-020(TV),,220kV110kV,TV220kV(LFPO901A),TV,,1TVTVTV,TV3:a.TVTV,,,TV,,N600[1]TV,,,,TVTV,N600EN600=E1Y1+E2Y2++EiYiY1+Y2++Yi(1)E1,E2,,EiTV;Y1,Y2,,YiTVN600TVUi=EN600-Ei(2),TVUA0,UB0,UC03U0,,b.TV,TVTVEN=3U0Y0+UAYA+UBYB+UCYCY0+YA+YB+YC(3)3U0=0,UA+UB+UC=0,EN=0,,3U0UA+UB+UC0,TV(3),,,TV,(),TVc.TVTV2111200111ElectricPowerAutomationEquipmentVol.21No.11Nov.2001©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.,,,2TVTV,TV,TVa.,[2]TV,TV,b.TV,,TVc.TV[3]TV,N220kV110kV220kV(LFPO901A),,220kV,110kV,10kV6TVNTV,6TVNN600,7TVN,110kV,,3a.,,,b.,3U0,,c.,,,,,:[1].[M].:,1999.WANGMei2yi.Electricpowernetworkrelayingprotectionap2plication.Beijing:ChinaElectricPowerPrss,1999.[2]DL400O911[S].DL400O91.Technologicalrulesofrelayingprotectionandsafetyautomationequipment.MinistryofPowerofChinaDe2cree,1991.[3][1994]191.[S].Electricpowersafetyproduction[1994]191.Theessentialofelectricpowersystemrelayingprotectionandsafetyautoma2tionequipmentcountermeasures.MinistryofElectricPowerofChinaDecree,1994.(:):(1970-),,,,,;(1972-),,,TheCauseofTVSecondaryWireAbnormityandItsCountermeasuresLIANGYu2lin1,HUANGXia1,CHENChang2cai2(1.ChongqingJiangbeiPowerSupplyBureau,Chongqing401147,China;2.BengbuPowerSupplyBureau,Bengbu233000,China)Abstract:TheprotectionmalfunctionsinducedbyTVsecondarywireabnormityoccasionallyoccur,towhichsomeprotectionpersonneldonothaveenoughunderstanding.TheTVsecondarywireabnormitycausedbywrongconnectionofTVsecondarywiresinsubstationanditsimpactonprotectionareanalyzedfromthreesides.Combiningwiththerequirementsofrelayingprotectiontechnicalregulationandanti2accidentmeasures,thecountermeasurestoTVsecondarywireabnormityareelaboratedandemphasizedtodeepentheunderstand2ingofitsharmforprotectionpersonnel.Thepracticeprovesthatthesecountermeasuresensuretheproperfunc2tioningofprotectiondevice.Keywords:TV;secondarywire;protection472001©1995-2004TsinghuaTongfangOpticalDiscCo.,Ltd.Allrightsreserved.