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发电机转子线圈匝间短路试验分析.docx

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发电机转子线圈匝间短路试验分析 Title:AnalysisofInterturnShort-CircuitTestingofGeneratorRotatorCoil Abstract: Theinterturnshort-circuittestisanessentialprocedureforgeneratorrotatorcoilanalysis.Thispaperaimstoexplorethesignificanceofthistestandprovideacomprehensiveanalysisofitsoutcomes.Theinterturnshort-circuittestevaluatestheintegrityandfunctionalityoftherotatorcoilbyexaminingthepresenceofanyshort-circuitsbetweenadjacentcoilwindings.Thistestplaysacrucialroleinensuringthesafeandefficientoperationofthegenerator. Introduction: Generatorrotatorcoilsaresubjectedtoextremeoperationalconditions,includinghighrotationalspeedsandelectromagneticforces.Theseconditionscanleadtothedevelopmentofinterturnshort-circuitswithinthecoilwindings.Ifleftundetected,theseshort-circuitscancausesignificantdamagetothegenerator,leadingtopotentialcatastrophicfailures.Therefore,itisimperativetoperformregularinterturnshort-circuitteststoidentifyanyfaultsintherotatorcoil. Procedure: Interturnshort-circuittestinginvolvesapplyingalow-voltage,high-frequencyACsignaltothegenerator'srotorcoilwindings.Thesignalisgraduallyincreasedwhilemonitoringtheresultingcurrentandvoltageresponse.Anydeviationsintheresponseindicatethepresenceofinterturnshort-circuits.Toaccuratelyassesstheseverityofthefaults,specificparameterssuchastheshort-circuitimpedance,reactance,andresistancearemeasured. AnalysisofResults: Theanalysisofinterturnshort-circuittestresultsrequiresadeepunderstandingofelectricalandmechanicalphenomenawithinthegenerator.Thefollowingfactorsshouldbeconsideredduringtheanalysis: 1.VoltageandCurrentResponse:Thevoltageandcurrentwaveformsobtainedduringthetestprovideinsightintothebehaviorofthecoilunderdifferentoperatingconditions.Deviationsfromtheexpectedresponseindicateinsulationfaultsorshort-circuitpaths. 2.ImpedanceMeasurements:Measuringtheimpedanceofthecoilwindingsatdifferentfrequencieshelpsidentifyvariationsininterturnresistanceandreactance.Anincreaseinimpedancesuggeststhepresenceofshort-circuitsordeterioratinginsulation. 3.Part