基于多台pf并联的微网谐波抑制方法-研究

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1、AbstractSincethemicronetworkcontainsalargenumberofrectifier／inverterdevicesandnonlinearloads，thisisboundtoproducealargenumberofharmonics，whichwillinfluenceDowerquality，andevenimpactitconnecttothegrid．Thispaperaimstotheharmonicprobleminmicronetwork，proposedtosol

2、veharmonicproblemsbymultipleAPFparalleloperation，usingcurrentsharingstrategyforthecontrolingofmultipleAPFparalleloperation，greatlyreducedtheharmoniccontentattheexitofthemlcrosource，theproposedschemeissimpleandreliable，andhavegoodextendability，highdynamicperform

3、ancebutalsocanreducethecost．Thisarticlewasstudiedmainlyfromthefollowingaspects：(1)Thispaperdescribedtheimportanceofthedevelopmentofmicro。network，aswellastheresearchanddevelopmentstatusofthemicronetworkathomeandabroad，proposedtheharmonicprobleminmicro—network．Ai

4、mtotheharmonicproblemsofmicro．network，itssources，theharmandtheexistinggovernancemethodwasanalyzed，aswellastheadvantagesanddisadvantagesofthevarioustreatmentmethods·Prol。losedtosolveharmonicproblemsbymultipleAPFparalleloperation，usingcurrentsharingandcurrentlimi

5、tingcontrolstrategyforthecontrolingofmultipleAPFparalleloperation，themethodissimple，reliable，highdynamicperformance，scalability，reliabilityandcanreducecosts．(2)UsingthesimulationsoftwareofPSCAD／EMTDCtobuildamodelofgovernancedevicesandsystems．Simulationusingtwos

6、huntAPFparalleloperationtogovernancetheharmonicofmicro．networkinnetworkedmode，eachAPFhadindependentharmonicdetectionmodule．Simulationverifiedtheip。iqdetectionmethodwaseffective，compensationcurrentwhichusingthedeadbeatcontrolmethodcankeeppacewiththeinstructioncu

7、rrentwaveform，andalmosttherewasnodelay·Thenbuildedaoverallsimulationmodelinnetworkedmode，thewindpowerandphotovoltaic(pv)modelwasestablished，verifiedbyPQcontrolcanmaketheactiveandreactivepowerofphotovoltaieandwindpowerbestabilizedafteracertainperiodoftimetoachie

8、vethedesiredcontroleffect．(3)Finally，analysedtheeffectofgovernance，byobservingthecompensationcurrentoftwoAPF，theusedcurrentsharingstrategyreachedevenlyharmoniccompensationde