摘　要：为充分利用单相接地故障的互补信息提高选线保护的可靠性,提出一种中性点非有效接地电网信息融合选线方法.该方法采用D-S证据理论,针对故障选线问题的具体特点,合理构造了选线识别框架和信度分配函数,将故障选线问题转化为证据理论模型,给出证据组合的选线判定原则,制定了基于信息融合的综合选线策略.应用该方法在模拟系统上进行实验,验证了方法的有效性.结果表明采用融合选线策略极大地提高了故障选线的可靠性.
关键词：电力系统;故障选线;信息融合;D-S证据理论
分类号：TM773 　文献标识码：A
文章编号：1004-9649(2007)01-0028-04

Study of earth fault detection for power distribution networks based on D-S evidence theory

JIA Qing-quan　

作者简介：贾清泉(1970-),男,吉林白山人,博士,教授,从事电力系统故障检测与故障诊断研究.E-mail:jiaqingquan@sina.com
作者单位：贾清泉（燕山大学,电气工程学院,河北,秦皇岛,066004）　

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