基于多源信息的配电网故障定位方法

Fault Location Method of Distribution Network Based on Multi-source Information

针对利用单一故障信号进行定位容易出现故障定位错误问题,文章提出了利用多种故障信号综合定位的方法。该方法利用配电网发生短路时收集到的各种故障信号,包括柱上开关动作信号、故障指示器动作信号、配变停电告警信号和95598投诉信号得到各自定位结果;然后将每一种定位结果形成证据,用D-S证据理论合成方法对所有证据进行合成,得到最终定位结果。最后以一个具体实例验证了该方法的有效性和可行性,表明该方法可以提高故障定位的容错性和准确性。

In view of the problem that using asingle fault signal for location is prone to fault location errors,a comprehensive location method using multi-source fault signal is proposed.The method uses a variety of fault signals collected when a short circuit occurs in the distribution network,including pole top switch action signal,fault indicator action signal,power failure alarm signal of distribution transformer and telephone complaint signal to obtain their respective positioning results.Then,each type of positioning result is formed into evidence,and all evidences are synthesized using the DS evidence theory synthesis method to obtain the final positioning result.Finally,the effectiveness and feasibility of the method are verified by a concrete example,which shows that the method can improve the fault tolerance and accuracy of fault location.