分布式發(fā)電系統(tǒng)的無功控制研究.pdf

1、北京交通大學碩士學位論文分布式發(fā)電系統(tǒng)的無功控制研究姓名：王瑞申請學位級別：碩士專業(yè)：電力電子與電力傳動指導教師：鄭瓊林20080601ABSTRACTABS’I’RAC’I’：Distributedgeneration(DG)isanewtechnologywithniceprospect，whichisalwaysconnectedwithdistributionsystemSotheresearchonreactivepowerc

2、ontrolofdistributedgenerationsystemisvaluableintheoryandinpracticeThecontentofthispaperarearrangedasfollows：FirstlytheimpactsofDGondistributionnetworksuchaslossandnodevoltagesisresearchedPowerflowmethodisappliedtoobtaint

3、hevoltageprofilebeforeandafterinterconnectingDGsourcesThegeneraloperationguidelineisrevealedafterseveralsimulationswheretheDGsources’outputandlocationchangeBasedonidealandpracticalmodelsofdistributionnetwork，theauthorcon

4、cludestheDGinfluenceonpowerloss，consideringtwelatedfactors：theDGsources’capacityandlocationconditionSecondlyareactivepoweroptimizationalgorithmincludingDGsourcesbasedongeneticalgorithmisproposedThecorrespondingparticular

5、modelisbuiltwhichtakesintotheminimumnetworklossandnodevoltageconstraintGeneticalgorithmisusedinreactivepoweroptimizationThesimulationexamplesshowthatthevalidityandeffectivenessoftheproposedalgorithminreducingnetworklosse

6、sandimprovingthevoltageprofilesLastlythe鰣dconnectedinverterofdistributedgenerationmodelissetupToachievethereactivepowerregulationindependentlytheactiveandreactivepowerdecoupledcontrolisresearchedThenthesimulationandexper

7、imentresultswerealsopresentedTheresearchonreactivepowercontrolofdistributedgenerationisofcertainvaluetotheDGapplicationinpracticeThepurposeistoachievethepositiveapplications，lightenthenegativeaffectionofDGandmakethesyste