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1、群搜索优化算法在中压配电网规划中的应用研究AbstractToday,itislowerlevelfordistributionsystemdevelopmentinourcountry.Withthespeedingupofurbanizationprocessandthecontinuousexpansionofnewdistrictconstructioninmanycities,theexistingdistributiongridshasbeenlaggingbehindthedevelopmentofurbaneconomy.Reasonabledistributionne
2、tworkplanningcaneffectivelysolvemanycurrentlyexistingproblemsinurbandistributiongridssuchasweaknetworkconfiguration,highlineloss,andunreasonableplanning,andetc.Ontheanalysisoftheproblemsofsomecommonly-usedalgorithms,thisdissertationestablishesthemathematicalmodelofdistributionnetworkplanningtaki
3、ngeconomyastheaimwithvariousconstraintsconsidering,andproposesanewrandomsearchalgorithm,namedasgroupsearchoptimizationalgorithm,tobeusedtosolvetheproblem.Inthestudyandanalysisofgroupsearchoptimizationalgorithm,toaimatsomeflawssuchassingleoptimizationwayofthefollowers,andeasytobetrappedinlocalopt
4、imum,andetc,thisdissertationproposesanimprovedgroupsearchoptimizationalgorithmwherestrategyoffishswarmoptimizationmechanismisintroducedinto,andthenappliedtosolvethedistributionnetworkplanningproblems.Thesimulationresultsshowthesuperiorityoftheproposedalgorithm.Themaincontentisbelowinthisdisserta
5、tion.(1)Toinvestigateandanalyzesomecommonly-usedalgorithmscurrentlyexistedondistributionnetworkplanning,andgivemoreattentiontotheshortcomingsanddeficienciesofthesealgorithms,andpointoutnecessityandpossibilitytoproposeanewrandomoptimizationalgorithmforsolvingthedistributionnetworkplanningproblem.
6、(2)Toproposeanimprovedpowerflowcalculationmethodbasedoncomparisonandanalysisondiversepowerflowcalculationmethods,andapplyittosolvethedistributionnetworkplanningproblems.Theresultsverifiedbyexamplesshowthattheproposedmethodisefficiencyandprecise.(3)Toconductdeeperinvestigationsandimprovementsongr
7、oupsearchoptimizationalgorithmasfollows.Toaimatafactthatthegroupsearchoptimizationalgorithmiseasytofallintothelocalminimum,theartificialfishswarmalgorithmisintroducedintobysettingofthescroungersearchingtoenhancetheglobalsear
