基于超声波的电缆终端局部放电检测

36320083Vol.36No.3Mar.20081,1,2,2(1.,200437;2.,200125):XLPE,,,,,,:,:;;;:(19702),,,:TM247:B:100129529(2008)0320043204PartialdischargemonitoringforcableterminalsbasedonultrasonicLIHong2lei1,LIFu2xing1,XUYong2ming2,ZHUHai2gang2(1.EastChinaElectricPowerTest&ResearchInstituteCo.,Ltd.,Shanghai200437,China;2.ShidongPowerCableCompany,SMEPC,Shanghai200125,China)Abstract:ThefailurerateoftheXLPEcableterminalisfarabovethatofthecablebody.Theultrasonicmethodwasusedtodetectthepartialdischarge(PD)faultforterminalsofagreatamountofoperatingcables,andtheworkingprincipleandapplicationeffectsofvariouskindsofultrasonicdetectorsareanalyzed.Theon2lineultrasonicmonito2ring,theroutinePDtest,andtheinfraredimagingwereconductedforcableterminalswithPDfaultsinlaboratory,andthefaultcableterminalwasdisassembledandmadeintoslicetosearchforPDcauses.TheresultsshowthattheultrasonicmethodisaccurateinfindingthePDfaultforcableterminals.Keywords:cable;terminal;ultrasonic;partialdischarge(PD)[4],.[J].,1997,21(6).[5],.[J].,2000,24(3).[6].[M].:.2006.[7].[J].,1998,38(4).[8],.[J].,2005,29(5).[9],,.[J].,2001,34(3).[10],.[J].,2003,23(9).[11],.[J].,2005,29(13).:2007212203:,,,,,,,,,,:(1);(2);(3),,,44(316)2008,36(3),,;[1]1,,,:,,,,[2]2,,[3],,45,,,,,,,,:(1),,(2),,(3),,33.12:,4905A;,AE900Do2bleAPDA4905A,,,,,AE900APDA2,10m1.5m,3.2,(1m),,,:,,,,,,1,,(30%),,1,,1,45(317)44.1,35kV,483,XLPE,48,,:,,1,,,13852;XLPE3;;;;3701;XLPE3;;A;3711;XLPEAB;;A:,B:,;,,,,,,,8,4.2,,,,2,,(q),,,,;TA,,3,,,2;100Hz,50Hz,;10050Hz,4.33852B,,2,2mV,(1mV),100Hz,50Hz;,12,180;3,,2,160350,TA30,,500pC,3852,,20mm,46(318)2008,36(3)23,20mm,,,,,,,45,10cm;,5(1),,(2)(3),:[1],,.[J].,2003,5(22).[2]MashikianMS,SzatkowskiA.MediumVoltageCableDe2fectsRevealedbyoff2LinePartialDischargeTestingatPowerFrequency[R].IEEE/PEST&DConferenceandExpo,NewOrleans,Oct.2005.[3]MashikianM.PreventiveMaintenanceTestingofShieldedPowerCableSystems[J].IEEETrans.onInd.Appl.(IA).2002,38:7362743.:2007207222:,,223,():1132,4220kV,125MW600MW1(125MW)220kV220kV,4(8MW),,,,,,()