和声算法在含DG配电网故障定位中的应用

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摘要分布式电源的接入使得运用优化算法进行配电网故障定位时,开关函数的建立变得复杂且搜索速度慢。为快速、准确地对含DG配电网进行故障定位,本文建立的基于双向潮流的开关函数模型,不仅能适用于单电源单故障,亦能适用于多DG多故障情况。提出了一种适用于含DG配电网的分区域处理方法,将网络划分为有源树和无源树枝,通过剔除无故障电流的无源树枝来减少解的维数,从而提高搜索效率。本文以故障位置为变量,通过限制解的故障个数,避免产生大量不可行解,利用和声搜索算法快速、精确的特点进行全局寻优。通过算例分析,验证了本方法的准确性与快速性。

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	刘蓓
	汪沨
	陈春
	黄浩川
	董旭柱

关键词 ：故障定位, 分布式电源, 开关函数, 和声算法, 分区域处理

Abstract：The distributed generators(DG) make the establishment of switch function extremely complex and slow searching when optimization algorithms are applied to locate the fault points. In order to make the location of fault points of distributed system with DG rapid and accurate,the model based on bilateral power flow is estabilised in this paper,suited for not only single-source-single-fault situation,but also the situation of multiple distributed generators with multiple faults. A regional processing method for DG distribution network is raised,which divides the network into active trees and passive branches. The solution's dimension is reduced by eliminating the passive branches free of fault current,so as to improve search efficiency. This method takes fault position as variable,so a large number of infeasible solutions are eliminated by limiting the fault number. It applies harmony algorithm on global optimization due to its speed and accuracy. The validaty and rapidity are confirmed by example analysis.

Key words： Fault location distributed generation switch function harmony search algorithm regional processing

收稿日期: 2011-09-20 出版日期: 2013-12-11

PACS:

TM72

基金资助:国家高技术研究发展计划（863计划）资助项目（2011AA05A114）。

引用本文:

刘蓓，汪沨，陈春，黄浩川，董旭柱. 和声算法在含DG配电网故障定位中的应用[J]. 电工技术学报, 2013, 28(5): 280-286. Liu Bei,Wang Feng,Chen Chun,Huang Haochuan,Dong Xuzhu. Harmony Search Algorithm for Solving Fault Location in Distribution Networks with DG. Transactions of China Electrotechnical Society, 2013, 28(5): 280-286.

链接本文:

http://dgjsxb.ces-transaction.com/CN/Y2013/V28/I5/280

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