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ID:34157271
大小:9.56 MB
页数:63页
时间:2019-03-04
《基于多台apf并联的微网谐波抑制方法研究》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、AbstractSincethemicronetworkcontainsalargenumberofrectifier/inverterdevicesandnonlinearloads,thisisboundtoproducealargenumberofharmonics,whichwillinfluenceDowerquality,andevenimpactitconnecttothegrid.Thispaperaimstotheharmonicprobleminmicronetwork,pr
2、oposedtosolveharmonicproblemsbymultipleAPFparalleloperation,usingcurrentsharingstrategyforthecontrolingofmultipleAPFparalleloperation,greatlyreducedtheharmoniccontentattheexitofthemlcrosource,theproposedschemeissimpleandreliable,andhavegoodextendabil
3、ity,highdynamicperformancebutalsocanreducethecost.Thisarticlewasstudiedmainlyfromthefollowingaspects:(1)Thispaperdescribedtheimportanceofthedevelopmentofmicro。network,aswellastheresearchanddevelopmentstatusofthemicronetworkathomeandabroad,proposedthe
4、harmonicprobleminmicro—network.Aimtotheharmonicproblemsofmicro.network,itssources,theharmandtheexistinggovernancemethodwasanalyzed,aswellastheadvantagesanddisadvantagesofthevarioustreatmentmethods·Prol。losedtosolveharmonicproblemsbymultipleAPFparalle
5、loperation,usingcurrentsharingandcurrentlimitingcontrolstrategyforthecontrolingofmultipleAPFparalleloperation,themethodissimple,reliable,highdynamicperformance,scalability,reliabilityandcanreducecosts.(2)UsingthesimulationsoftwareofPSCAD/EMTDCtobuild
6、amodelofgovernancedevicesandsystems.SimulationusingtwoshuntAPFparalleloperationtogovernancetheharmonicofmicro.networkinnetworkedmode,eachAPFhadindependentharmonicdetectionmodule.Simulationverifiedtheip。iqdetectionmethodwaseffective,compensationcurren
7、twhichusingthedeadbeatcontrolmethodcankeeppacewiththeinstructioncurrentwaveform,andalmosttherewasnodelay·Thenbuildedaoverallsimulationmodelinnetworkedmode,thewindpowerandphotovoltaic(pv)modelwasestablished,verifiedbyPQcontrolcanmaketheactiveandreacti
8、vepowerofphotovoltaieandwindpowerbestabilizedafteracertainperiodoftimetoachievethedesiredcontroleffect.(3)Finally,analysedtheeffectofgovernance,byobservingthecompensationcurrentoftwoAPF,theusedcurrentsharingstrategyreachedevenlyharmoniccompensationde
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