证据理论在配电网故障定位中的应用

Application of Evidence Theory to Fault Location of Distribution Network

摘要:

将不同的故障指示器当作独立的传感器,利用其采集的故障信息形成不同的证据,然后通过改进的D-S证据理论对形成的证据进行融合,最后依据改进的决策原则得到最终的故障定位结果。仿真分析表明,该方法在故障信息误报或漏报的情况下,定位结果仍然可信。为基于故障指示器的故障定位方法提供了新的参考。

关键词:容错性;证据理论;信息融合;故障定位;

Abstract:

Firstly，different fault indicators are treated as independent sensors to form different evidences with the fault information collected by them． Then，the evidences formed are fused through the improved D － S evidence theory，and the final fault location results are obtained according to the improved decision principles． Simulation results show that the proposed method is still reliable in the case of false or missing fault information． It provides a new reference for fault location method based on fault indicator．

Key words:fault tolerance; evidence theory; information fusion; fault location