基于多台pf并联的微网谐波抑制方法-研究

基于多台pf并联的微网谐波抑制方法-研究

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页数:65页

时间:2019-03-03

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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

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