含分布式发电的配电网无功优化方法-研究

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1、ABSTRACTReactivepoweroptimizationisaneffectivemeasureofimprovingthepowerquality,decreasingnetworklossandenhancingpowersupplyreliabilityindistributionnetwork.Withthedevelopmentofintelligentoptimizationalgorithm,anoptimizationalgorithmwhichhasgoodconvergenceandrobustness

2、istheimportantresearchdirectiononsolvingthereactivepoweroptimization.Severaltypicaldistributedgenerationsareintroduced.Thedifferencebetweentypicalnetworkandnetworkwithdistributedgenerationisanalyzed.Aloadflowcalculationmethodisdetailedintroduced.Afterdistributedgenerat

3、ionaccesstodistributionnetwork,theinfluenceonvoltageandnetworkisanalyzed.Onthebasisofresearchontraditionmultiobjectivereactivepoweroptimization,areactivepoweroptimizationmathematicalmodelwithdistributedgenerationisbuiltup.Themodelmainlyincludestheactivepowerloss,voltag

4、edeviationandstaticvoltagemargin.Animprovedimmunealgorithmisproposedtosolvereactivepoweroptimization.Themulti-objectivereactivepoweroptimizationproblemswhichconsiderstaticvoltagestabilityaretested.Theresultsshowthatthealgorithmhasglobalconvergencereliabilityandfasterco

5、nvergencerateAttheend,aimingatthedisadvantagesofPSOareeasytofallintooptimalsolutionandpremature.Onthebasisofpreviousstudies,thispaperimprovesaCloudadaptivePSOalgorithmandputsforwardtodealwithreactivepoweroptimization.BasedonthePSO,thealgorithmisdynamicinertiaweightopti

6、mizationandmakesacorrespondingadjustmentofthealgorithmdependingonthedifferentsituation.Thealgorithmacceleratestheconvergencespeedandcangetridoftheplightoflocaloptimum.Theresultsshowthatreactivepoweroptimizationcanbalanceeconomicandsecurityofthesystem.Wecanalsoknowthati

7、tcanreducepowerlossandimprovevoltagestabilitywhendistributedgenerationaccesstopowergrids.IIKeyWords:Distributionsystem,Reactiveoptimization,Distributedgeneration,Imumunealgorithm,ParticleswarmoptimizationIII目录摘要..........................................................

8、.....................................................................IABSTRACT.......................................