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用于有源补偿器的广义瞬时无功电流实时检测方法.docx

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用于有源补偿器的广义瞬时无功电流实时检测方法 Title:AGeneralizedReal-TimeDetectionMethodforInstantaneousReactiveCurrentinActiveCompensators Abstract: Inrecentyears,activecompensatorshavegainedsignificantattentionduetotheirabilitytomitigatepowerqualityissuescausedbynonlinearloadsandreactivepowerdemand.Thesecompensatorsareemployedtoinjectorabsorbinstantaneousreactivecurrentstoachieveaccuratepowerfactorcorrectionandloadbalancing.However,accuratereal-timedetectionoftheinstantaneousreactivecurrentremainsachallengeforeffectivecontrolandmonitoringofactivecompensators.Thispaperproposesageneralizedreal-timedetectionmethodfortheinstantaneousreactivecurrentinactivecompensators.Themethodutilizesadvancedsignalprocessingtechniquestoextractthereactivecomponentfromthemeasuredcurrentwaveform,enablingpreciseestimationoftheinstantaneousreactivecurrent.Simulationandexperimentalresultsvalidatetheeffectivenessandaccuracyoftheproposedmethod. 1.Introduction: Withtheincreasingpenetrationofnonlinearloadsandrenewableenergysourcesinpowersystems,theneedforeffectivepowerfactorcorrectionandreactivepowercompensationhasbecomeparamount.Reactivepowercompensationplaysavitalroleinminimizingpowerlosses,voltageflicker,andharmonicdistortion.Activecompensatorsarewidelyemployedtofulfillsuchrequirementsbyinjectingorabsorbinginstantaneousreactivecurrents.Accuratereal-timedetectionoftheinstantaneousreactivecurrentisessentialforeffectivecontrolandmonitoringofthesecompensators. 2.BackgroundandRelatedWork: PreviousresearchhasfocusedontraditionalmethodsforreactivepowerdetectionsuchasthefundamentalfrequencycomponentextractionandtheuseofdiscreteFouriertransform.However,thesemethodsoftenfailtoprovideaccurateresultsinthepresenceofharmonicsandnon-sinusoidalwaveforms.Toovercometheselimitations,advancedsignalprocessingtechniquessuchaswavelettransform,adaptivefilteralgorithms,andS-transformhavebeenemployedforaccurateandreal-timedetectionofthereactivecomponent. 3.ProposedDetectionMethod: Theproposedmethodadoptsahybridapproachthatcombineswavelett