基于多台apf并联的微网谐波抑制方法研究

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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