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411Vol.41No.120192HeilongjiangElectricPowerFeb．2019DOI10．13625/j．cnki．hljep．2019．01．0142018－06－302018－11－07。1985—．10kV517000。。。。TM591A2095－6843201901－0068－05Ｒesearchonpartialdischargelocationof10kVswitchgearbasedontransientearthvoltageZHANGLongHUANGWeihuaYANGZhipingWUYishenHeyuanPowerSupplyBureauGuangdongPowerGridCorporationHeyuan517000ChinaAbstractPartialdischargeacceleratesinsulationagingandleadstoinsulationfailureofhighvoltageequipment．PDtestisanimportantbasisforconditionevaluationofswitchgear．Itisusuallycombinedwithtransientearthvolt-ageandultrasonicdetectionmethodstodetectpartialdischargeofswitchgearwhichisvulnerabletoexternalsignalinterferenceanddifficulttolocatethefault．Thereforebasedontheformationmechanismoftransientearthvolt-agethispaperanalyzesthecharacteristicsoftransientearthvoltageandproposesalong－termmonitoringmethodforsuspiciousHVswitchgear．TheantennaisusedtoshieldtheexternalinterferencesignalandtheswitchgearpartialdischargesignalisidentifiedfromcomplexsignalsourcesFinallythefaultlocationofpartialdischargecanbelocatedbythemethodofmatrixprobe．Thefaultlocationisfoundandlocatedintheactualworkingcasewhichcanverifythemethodisaccurateandfeasible．Keywordstransientearthvoltageswitchgearinsulationpartialdischargefaultlocation010kV1－3。4。31．9%5。6。7。TransientEarthVoltageTEV8。TEV。。1。1974Dr．JohnＲeeves9。TEV10TEV。TEV1。1TEVFig．1GenerationanddetectionprincipleofTEV2。。。、。121、2、11、1282。2Fig．2Layoutofsensorsandshieldingantenna32016823110kV10kV5dB。TEV41dB、40dB3。3Fig．3Hand－heldPDdetectormeasurementvalueEAPDM031214。13d2016823—201695TEV2s。1Table1Channelconfiguration711#254252PT853964107*1、2、11、12*·96·110kV4Fig．4DiagramoffieldsensorarrayPDM0325～8。1、2、11、12190。。3、4、5、6、700。2Table2Analysisresultaftertesting1102903004005106007008112629389010173274111012205TEVFig．5TEVamplitudeofallchannels6Fig．6Short－termseveritywaveformsofallchannels·07·4128、9、10、、711711。7117119。710Fig．7Short－termseveritywaveformofChannel1088Fig．8Short－termseveritywaveformofChannel89Fig．9Cableinsulationdamageatjointdepartment。10TEV3～920dB111。1111。41。·17·110kV10TEVFig．10TEVamplitudeofallchannels11Fig．11Short－termseveritywaveformsofallchannels2TEV。3、、。1．J．2016524139－144．ZHENGJiankangYANGXiaoyuSUNHaojieetal．ＲesearchonlocationmethodandparameterestimationofPDsignalformetal－cladswitchgearJ．HighVoltageApparatus2016524139－144．2．TEVJ．20145011115－121．WUJiLUHongWANGLiuhuoetal．Experimentalstudyonpropagationoftransientearthvoltagesignalsarousedbypartialdis-chargeinswitchgearsJ．HighVoltageApparatus20145011115－121．3．J．2011377309－312．WANGYouyuanLIYanweiLUGuojunetal．Simulationoftran-sientearthvoltagesarousedbypartialdischargeinswitchgearsJ．HighVoltageEngineering2011377309－312．4．J．201130510－12．JINJianyun．StudyofTEVdetectiononswitchgearpartialdis-chargeJ．ShanxiElectricPower201130510－12．78·27·41。－90°90°|I·m－I·n|≤|I·m+I·n|90°270°|I·m－I·n|≤|I·m+I·n|。KKout。Iset|I·m－I·n|min|I·m+I·n|max|I·m－I·n|Iset＜min|I·m+I·n|－Koutmax|I·m－I·n|Iset＞IsetmaxIsetmaxKK＜min|I·m+I·n|－Isetmaxmax|I·m－I·n|KIset。4MATLAB/SIMULINK220kV220kV。。IsetK。1．±660kVJ．2013331/280－83．WANGYijunZHANGYuZHANGZhuolin．Atypical660kVsys-temmodelingandsimulationresearchJ．JournalofNortheastE-lectricPowerUniversity2013331/280－83．2．VSC－MTDCJ．2006301928－33．CHENHairongXUZheng．AnovelDCvoltagecontrolstrategyforVSCbasedmulti-terminalHVDCsystemJ．AutomationofElec-tricPowerSystems2006301928－33．3．J．200428111－5．GUOZhengHEJiali．Novelprincipleofpilotdifferentialrelaypro-tectionoftransmissionlinesJ．AutomationofElectricPowerSys-tems200428111－5．4．J．20073311－9．XUZhengCHENHairong．ＲeviewandapplicationofVSCHVDCJ．HighVoltageEngineering20073311－9．5．J．20002049－13．YUANＲongxiangCHENDeshuZHANGZhe．Studyonanewdif-ferentialprotectionfortransmissionlineJ．ProceedingsoftheCSEE20002049－13．725．J．201427491－94．WANGLiuhuoLUHongWANGZengbinetal．Studyonap-plicationofpartialdischargedetectingandpositioningtechnologyforswitchcabinetJ．GuangdongElectricPower201427491－94．6．TEVJ．2013501173－78．LUFangchengLIHaideWANGZijianetal．ＲesearchonpartialdischargedetectionandlocationofswitchgearbasedonTEVandultrasonicwavemethodsJ．ElectricalMeasurement＆Instrumen-tation2013501173－78．7．10kVTEVJ．201447293－96．DENGYurongTIANShujunLIＲuipengetal．AnimprovedTEVdetectionandlocationtechniqueofpartialdischargefor10kVswitchgearJ．InsulatingMaterials201447293－96．8．J．201036102460－2466．ＲENMingPENGHuadongCHENXiaoqingetal．Comprehen-sivedetectionofpartialdischargeinswitchgearusingTEVJ．HighVoltageEngineering201036102460－2466．9．PDJ．201551467－77．FENGBoXIAODaiboLIYietal．DetectionofpartialdischargeinswitchgearunderdifferenthumidityusingtransientearthvoltageandultrasonicmethodJ．HighVoltageApparatus201551467－77．10．J．201450362－67．WANGLiuhuoLUHongWUJietal．Applicationstudyonde-tectiontechnologyofswitchgearpartialdischargeJ．HighVoltageApparatus201450362－67．·87·41