一种配电网故障区段定位的改进矩阵算法

分析了现有配电网故障定位矩阵算法存在的问题,提出一种配电网故障区段定位改进矩阵算法。该方法以网络关联矩阵描述馈线区段和测控点的拓扑联接关系,根据故障发生时与故障馈线区段相连测控点的故障过电流特征,形成一种适用于各类型馈线区段故障判定的统一判据。该算法判据形式统一、计算量小,省去了规格化处理与多次设定正方向的过程,能够解决环网故障、馈线末端故障、多电源网络多重故障定位等问题。

An improved matrix algorithm for fault section location in distribution system

The problems existing in current matrix algorithms for fault location in distribution system are analyzed. An improved matrix algorithm is presented. This algorithm describes the topological connection between feeder sections and monitoring devices by incident matrix. According to the fault overcurrent characteristic of monitoring points which associate with the fault section when the feeder fault occurs. A uniform criterion for fault location which is applicable to all types of feeder section is forming. The criterion of the algorithm is simple and unified. The processes of standardization and setting positive direction for several times are avoided. The algorithm can solve the problems of terminal feeder fault, looped network fault and multiple faults occurring simultaneously in multi-power system.