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时间:2020-03-28
《基于源流路径剖分的输电断面快速搜索.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43卷第l2期电力系统保护与控制Vb1.43No.122015年6月16日PowerSystemProtectionandControlJun.16.2015基于源流路径剖分的输电断面快速搜索张富超,钟成元,张富春3刘耿华,黄家栋(1.华北电力大学电气与电子工程学院,河北保定071003;2.国网安庆供电公司,安徽安庆246003;3.国网冀北电力有限公司秦皇岛供电公司,河北秦皇岛066000;4.吉林电力培训中心,吉林长春l30062)摘要:过载支路切除引起大规模潮流转移是导致连锁故障的重要原因。为快速、准确和全面地搜索到受潮流转移影响较大的线路构成的输电断面,提
2、出了一种基于源流路径剖分的输电断面快速搜索算法。该算法首先根据实际电网结构利用图论知识生成有向图,建立送端节点.送电支路邻接表,快速生成源流路径树,逐步搜索有效源流路径链,最后计算所有有效源流路径链中所包含支路的开断分布因子,识别出受潮流转移影响较大的线路。所提算法无需进行全网拓扑搜索,无大规模矩阵运算,因此算法简便,搜索快速。对IEEE39节点系统进行仿真分析,其结果证明了所提算法的快速性与正确性。关键词:源流路径;输电断面;快速搜索;潮流转移;开断分布因子Fastsearchoftransmissionsectionbasedonpathsplitbetweens
3、ourcesandflowsZHANGFuchao,ZHONGChengyuan2,ZHANGFuchtm3,LIUGenghua4,HUANGJiadong(1.SchoolofElectricalandElectronicEngineering,NorthChinaElectricPowerUniversity,Baoding071003,China2.StateGridAnqingElectricPowerCompany,Anqing246003,China;3.StateGridQinhuangdaoElectricPowerCompany,Qinhuangd
4、ao066000,China;4.JilinElectricPowerTrainingCenter,Changchun130062,China)Abstract:Large-scalepowerflowtransferringcausedbyoverloadlinesremovalisanimportantreasonforcascadingoverloadtrips.Forobtainingtransmissionsectionconsistingofthelinesthatafectedlargelybythepowerflowtransferring,thisp
5、aperproposesafastsearchalgorithmabouttransmissionsectionbasedonpathsplitbetweensourcesandflows.Firstly,thealgorithmtransformstheactualgridstructureintoadirectedgraphusinggraphtheory,thenestablishesthesendingendnode—powertransmissionbranchadjacenttableandquicklygeneratespathtreesofsource
6、sandflows.Breakingdistributedfactorsofthebranchesincludedinalltheefectivepathchainsbetweensourcesandflowsarecalculated.Thelinesthatlargelyafectedbythepowerflowtransferringareidentified.Thisalgorithmneedn’tsearchforentirenetworktopologyanddoesn’tcontainanylargemassmatrixoperations,SOitis
7、eficient.Finally,thesimulationresultsofIEEE39nodesprovetherapidityandcorrectnessofthealgorithm.Keywords:pathsbetweensourcesandflows;transmissionsection;fastsearch;powerflowtransfering;breakingdistributedfactors中图分类号:TM715文献标识码:A文章编号:1674—3415(2015)12—0008.06载时,不能任由过负荷保护简单地动作切除过
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