改进的配电网相间短路故障定位隔离算法

分析了目前配电网相间短路故障定位和隔离算法中存在的一些问题(如末端故障不能定位、线路上的多重短路不能全部准确定位等)后,利用电网网络拓扑关系和电流幅值大小、潮流方向性提出了一种配电网相间短路故障定位和隔离改进算法,可实现各种相间短路故障定位和隔离。各种相间短路故障的模拟证明了该算法的正确性。该算法原理简单,运算量小,计算速度快,能够满足在线应用的要求。

An Improved Arithmetic on the Location and Isolation of Interphase short Circuit Fault in Power Distribution Network

The problems existing in location and isolation arithmetic of interphase short circuit current fault are analyzed. Based on the end fault and the multiple faults in distribution network, a new improved interphase fault section location and isolation criterion is put forward, by which not only the simple faults can be located, but also the end faults and the multiple faults can be quickly located. By simulating various faults in different distribution networks, its effectiveness is approved, and it is simple and can be used in fault current diagnosis online.