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基于Adaline网络的HVDC混合有源直流滤波器控制策略研究.docx

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基于Adaline网络的HVDC混合有源直流滤波器控制策略研究 基于Adaline网络的HVDC混合有源直流滤波器控制策略研究 Abstract： Withtherapiddevelopmentofpowerelectronicstechnologyandrenewableenergysources,itiscrucialtodevelopefficientandreliablepowertransmissionsystemsthatcanintegraterenewableenergysourcesandimprovethepowerquality.HVDC(High-VoltageDirectCurrent)transmissiontechnologyhasbeenwidelyusedtoachievethisgoal. However,duetotheincreasingamountofpowerelectronicsdevicessuchasconverters,HVDCtransmissionsystemsgenerateunwantedharmonicsanddistortion,whichcancausepowerqualityproblems.Toovercomethisissue,HVDChybridactivefilters(HAFs)havebeenproposedasasolution.Inthispaper,weproposeacontrolstrategyforHVDCHAFsbasedonAdalineneuralnetworks,whichcanimprovethefilteringperformanceandstabilityofthesystem. Introduction： Withtheincreasingdemandforrenewableenergysourcesandthedevelopmentofpowerelectronicstechnology,itiscrucialtodevelopefficientandreliablepowertransmissionsystemsthatcanintegraterenewableenergysourcesandimprovethepowerquality.High-VoltageDirectCurrent(HVDC)transmissiontechnologyhasbeenwidelyusedinpowertransmissionanddistributionsystemsduetoitsadvantages,suchaslowtransmissionloss,longtransmissiondistance,andhighpowertransmissioncapacity. However,astheamountofpowerelectronicsdevicessuchasconvertersusedinHVDCtransmissionsystemsincreases,thesystemgeneratesunwantedharmonicsanddistortion,whichcancausepowerqualityproblems,suchasvoltageandcurrentharmonics,reactivepower,andelectromagneticinterference.Toovercomethisissue,HVDChybridactivefilters(HAFs)havebeenproposedasasolution. HVDCHAFscaneffectivelysuppressharmoniccurrentsandvoltagedistortionsinthepowersystembyinjectingacompensatingcurrent,whichcanreducetheharmoniccontentofthevoltageandcurrentwaveforms.TheHAFconsistsofapassivefilterandanactivefilter,whichcanoperateineithervoltage-sourceorcurrent-sourcemode. AdalineneuralnetworkswereintroducedbyWidrowandHoffin1960asanextensiontotheperceptronalgorithm.Adalinenetworksusealinearactivationfunctionandcanbeusedforlinearclassificati