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ID:253524
大小:99.00 KB
页数:9页
时间:2017-07-14
《Intelligent Design of Low Voltage Side Circuit in Active Electronic Current Transformer 英语论文》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、IntelligentDesignofLowVoltageSideCircuitinActiveElectronicCurrentTransformerABSTRACTWiththedevelopmentofpowerindustryandtheincreaseofvoltagelevel,manyproblemsofelectromagneticcurrenttransformerhademerged,thustheconceptofelectroniccurrenttransformerwasproposedbyInternationalElectro-technic
2、alCommission(IEC)inordertosolvethosequestions.Thereinto,theactiveelectroniccurrenttransformerisconsideredasthemostfeasible.However,manydisadvantagessuchashighcost,lowgeneralityandintelligencewereencounteredwhenusingNormalIntegratedCircuitinthelow-voltageside.Anewdesigningmethodoflow-volta
3、gesidecircuitisintroducedinthispaper.IttakesadvantageofDigitalSignalProcessor(DSP)’spowerfuldataprocessabilitytorealizepreciseanalysisanddataprocessing.Moreover,theperipherycircuitofthismethodismuchsimplerthanabovemethods.Someparticularfunctionssuchasfrequencymeasurementandharmonicanalysi
4、scouldalsobeprovidedbyusingthismethod.Thefunctionsoflocaldisplayandremotecommunicationcouldbeselectedinaccordancewithrequirement.Themeasuringresultindicatesthattherationerrorsatisfiesthenationalstandardof0.1classtransformer.Andthismethodisquitegeneralforitsflexibilityofthenumbersofmonitor
5、ingparameterinthehigh-voltagesideandthebitsofanalog-to-digitalconvert.KEYWORDS:Electroniccurrenttransformer,DSP,Frequencymeasurement,Harmonicanalysis9INTRODUCTIONAsanimportantpartofprotectingandmeteringsystems,theaccuracyofcurrenttransformerisstronglyrelativewiththesecurityandreliabilityo
6、fpowersystem.Conventionalelectromagneticcurrenttransformers(CT),whicharenowfrequentlyusedinthepowersystem,couldensuretheaccuracyandreliabilityrequiredformeteringandprotection.Butwiththeproblemofdifficultinsulationandtheeffectofthesaturation,theconventionalcurrenttransformerismoreandmoreun
7、fitforthedevelopmentofmodernpowersystem.Thenmanymeasurementtechniqueshavebeendevelopedinordertosolveabovedisadvantagesofconventionalcurrenttransformers.Recently,manyachievementshavebeenacquiredintheopticalcurrentmeasurementfieldduetotheappearanceofintegratescircuita
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