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《基于改进细菌群体趋药性算法的配电网无功优化.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、第4O卷第14期电力系统保护与控制Vo1.40N0.142012年7月16日PowerSystemProtectionandControlJuly16,2012基于改进细菌群体趋药性算法的配电网无功优化陈继明,王元元,高艳亮(1.中国石油大学(华东)信息与控制工程学院,山东青岛266555;2.山东电力集团公司东营供电公司,山东东营257091)摘要:基本的细菌群体趋药性(BCC)算法中系统参数的固有设置方式极大地制约了算.法I能,群体信息交互策略的引入,不可避免地产生趋同性,容易陷入局部最优。鉴于此,引入精度更新参数控制精度,动态调整细菌寻
2、优速度、自适应调整细菌感知范围;并增加自适应变异算子增加随机扰动,改善种群的多样性,提高算法逃离局部最优的能力;以混沌搜索代替随机迁徙,利用其不重复的遍历性完成对局优点的二次寻优,形成改进的细菌群体趋药性(IBCC)算法,该算法极大地提高了算法的全局寻优能力。基于IBCC算法,建立了无功优化数学模型,并以IEEE一33节点配电系统为例应用该算法进行优化计算,结果表明,该算法在解决配电网无功优化问题上,具有很好的应用前景。关键词:改进细菌群体趋药性算法;动态调整;自适应变异算子;混沌搜索;配电网;无功优化Reactivepoweroptimiz
3、ationofdistributionnetworkbasedonimprovedbacterialcolonychemotaxisalgorithmCHENJi.ming,WANGYuan.yuan2GAOYan.1iang,(1.CollegeofInformationandControlEngineering,ChinaUniversityofPetroleum(EastChina),Qingdao266555,China;2.DongyingPowerSupplyCompany,ShangdongElectricPowerCorpor
4、ation,Dongying257091,China)Abstract:InbasicBacterialColonyChemotaxis(BCC)algorithm,theinherentwayofsettingupsystemparametersgreatlyrestrictsthealgorithmperformance,andthegroupinformationexchangestrategyleadstosimilarityofthebacteria,whichmakesthealgorithmeasytofallintolocal
5、optimum.Inviewofthis,somemeasuresforimprovementareproposed.Anupdatedparameterisintroducedtocontrolaccuracy,thespeedofbacteriaisadjusteddynamicallyandthesensingrangeofbacteriaisadjustedadaptively.Besides,anadaptivemutationoperatorisaddedtokeeppopulationdiversityandimprovethe
6、abilitytoescapelocaloptimum,andchaossearchinsteadofrandommovementisusedtofinishlocalsearching.ThusanimprovedBacterialColonyChemotaxis(IBCC)algorithmispresented,whichgreatlyimprovesglobalsearchingability.BasedontheIBCCalgorithm,mathematicalmodelofreactivepoweroptimizationise
7、stablished,andtheresultsofIEEE33·nodesystemshowthattheIBCCalgorithminsolvingthereactivepoweroptimizationofdistributionnetworkproblemspresentsaverygoodapplicationprospect.Keywords:IBCC;adjustdynamically;adaptivemutmionoperator;chaossearch;distributionnetwork;reactivepoweropt
8、imization中图分类号:TM761文献标识码:A文章编号:1674-3415(2012)14.0097-06无功潮流的分布,从而提高系统电压水平,降低有0引言
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