配电网故障定位的一种新算法

提出了一种适用于多电源复杂配电网的故障定位的新算法。首先根据网络中开关的连接关系和假定的方向建立一个网络描述矩阵D。从FTU得到有关故障过电流及其方向的信息，并加入到D中对角线元素上，就可以得到故障判别矩阵D_p。依据D_p中的相关元素的值就可以快速而有效地判别出故障区域。该算法无需进行矩阵相乘的繁琐运算，且当电源数增加时，程序无需进行相应的规格化调整。

A NOVEL ALGORITHM FOR FAULT LOCATION IN POWER DISTRIBUTION NETWORK

A novel algorithm is presented for fault location in the complex multi-source power distribution system.The algorithm forms the network describing matrix D on basis of the connection of the switches and the power flow directions between two adjacent switches,then the fault judgement matrix D p is formed by adding the field terminal unit(FTU)information about the fault overcurrents and their directions to the diagonal of the former describing matrix D.According to the values of the related elements in the matrix D p ,the fault section can be identified immediately and correctly.Compared to the previous algorithm,this method doesn't need to take the burdensome matrix multiplication.Furthermore,when the number of the sources is increased,the program doesn't need to take the corresponding modification.