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1、第38卷第2期电网技术Vol.38No.22014年2月PowerSystemTechnologyFeb.2014文章编号:1000-3673(2014)02-0388-07中图分类号:TM72文献标志码:A学科代码:470·4051基于线性判别分析与主成分分析的骨干网架生存性评估方法赵一婕,刘涤尘,吴军,董飞飞,宋春丽,潘旭东,王浩磊(武汉大学电气工程学院,湖北省武汉市430072)SurvivabilityEvaluationofBackboneNetworkBasedonLinearDiscriminantAnalysisandPrincipalC
2、omponentAnalysisZHAOYijie,LIUDichen,WUJun,DongFeifei,SONGChunli,PANXudong,WANGHaolei(SchoolofElectricalEngineering,WuhanUniversity,Wuhan430072,HubeiProvince,China)ABSTRACT:Fromtheperspectiveofresistibility,决准则函数的最大值,以其所对应的最大投影方向确定三级recoverability,securityandconnectivityofbackbone
3、network指标权重,再对二级指标矩阵进行主成分分析,根据累积方anindicatorsystemforsurvivabilityevaluationof差贡献率来确定二级指标权重,最终实现骨干网架综合生存differentiatedplanningisestablished,andtheanalysison性评估。IEEE118节点算例的仿真结果验证了该评估方法的benefitandcostattributesofsurvivabilityindicatorsandthe有效性和可信性。standardizationofthemareperforme
4、d.Onthisbasis,alinear关键词:差异化规划;骨干网架;生存性;线性判别分析;discriminantanalysis(LDA)modelforthesecond-class主成分分析indicatorsandaprincipalcomponentanalysis(PCA)modelforDOI:10.13335/j.1000-3673.pst.2014.02.018thefirst-classindicatorarebuilt.Firstly,themaximumvalueofLDAjudgmentcriterionfunctionfo
5、rthesecond-classdecision0引言matrixissolved,andaccordingtothelargestprojection近年来,频繁发生的极端自然灾害对电力系统directioncorrespondingtothismaximumvaluetheweightsof[1-5]安全及国民经济造成严重威胁。贯彻差异化规划thethird-classindicatorsaredetermined,thenthePCAofthe[6-8]原则和思想并构建骨干网架,是保证重要负荷持second-classindicatormatrix
6、isperformed,andthenaccording续供电并提高系统容灾抗灾能力、建设坚强电网的tothecontributionratesofcumulativevariancestheweightsofthesecond-classindicatorsaredetermined,andfinallythe重要研究方向。电网差异化骨干网架的特性是用其syntheticsurvivabilityevaluationofbackbonenetworkis生存能力替代灾害发生时的紧急调度、控制以及灾implemented.Thevalidityandcr
7、editabilityoftheproposed后重建与抢修,因此采用科学的评估指标体系及方evaluationmethodareverifiedbysimulationresultsofIEEE法对网架生存性进行评估,成为差异化规划骨干网118-bussystem.架构建[9-10]关键技术。KEYWORDS:differentiatedplanning;backbonenetwork;系统生存性的概念来源于通信网络,侧重于描survivability;lineardiscriminantanalysis(LDA);principal[11-12]述系
8、统能够及时完成关键任务的能力。而电网componentanalysis(PCA)