葛洲坝电站变压器绝缘多特征量在线监测应用分析

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1、重庆大学工程硕士学位论文英文摘要ABSTRACTPowertransformeron一linemonitoring15PresentlytheresearchhotsPotintheareaofhigh一voltageinsulationmeasurementanddiagnosis.Beforethetransformerinsulationfault，itmosthasacertainPeriodoffaultdeveloPmentandvarioussignsofPre一Pe而rmaneeofequiPments’electrieal，Physical，ehe

2、miealandothercharacteristieswhiehhavesmallgradualchanges，suchasPartialdischarge，011一dissolvedgasoverproof，coreearthingeurrentabnormal。ThePaPerbasedonPartialdischarge，011一dissolvedgasandeoree氏rthingcurrenimulti一charaeteristicsveetorsthetransformeron一linemonitoringandanalysisforearlydete

3、ctionoffailuretoPreventthefurtherexPansionoffaulthasamajorrolein，greatlyimProvedthediagnosisoftransformerinsulatingthetimelinessandaccuracy.Basesonmulti一characteristicsveetorson一linemo爪toringsystemaPPlicationintransformerinsulation，thePaperanalysedon一linemonitoringPrineiPleandmethodoft

4、ransformerPartialdischarge，011一dissolvedgasandthecoreearthingcurrent:discussedthePrinciPleofhighfrequencycurrentsensorandtestedtheeharacteristies.ThePaperadoPedtherelatedfunetionsofthefrequencydomaintoidentifyPeriodieinterferenceintransformerPartialdischargeon一linemonitoringsystem，andd

5、esignedoftheIIRgrid一shaPednotchfiltertoinhibitit.Afuelgassensorandthe011一gasseParationmembranesexeellentPerformanee15analyZed.Finally，thePaPeranalysedGezhoubaPowerStation251Btransformerinsulationon一linemonitoringsystemPractiealoPeration，on一sitemonitoringanddiagnosisresultsshowthat:thew

6、holesystemrunsstable，safeandreliable，thetestingdatahaveacertainaccuracy，whiehcaneomPletethePartialdischarge，gaschromatography，coreearthingeurrenicollection，analysis，queryandotherfunctions，it15satisfiedwiththedemandofen乡neerapPlication.Keywords:Transformer;Multi一CharaeteristicVeetors，On

7、一lineMonitoring:Insulation:GezhoubaPowCfStationII重庆大学工程硕士学位论文目录目录中文摘要............................................……I英文摘要............................................……n1绪论..............................................……11.1变压器绝缘在线监测的目的和意义..................................……11.2变压器绝缘在线