配电网故障区间判断的通用矩阵算法  

General matrix algorithm for fault section detection in distribution system

作　　者：马强[1] 张利民[1] 刘皓明[1] 

机构地区：[1]河海大学电气工程学院,江苏南京210098

出　　处：《电力系统保护与控制》2009年第5期14-17,共4页Power System Protection and Control

摘　　要：根据配电网的各种故障情况提出了一种分区分层判断故障的通用矩阵算法。首先采用分区的思想以常开型联络开关为界将配电网络分成许多小区,根据故障信息粗略判断出发生故障的小区。充分利用配电网的结构特点,在馈线终端单元(FTU)装置中设置三种工作模式。针对发生故障的小区形成网络描述矩阵,根据不同工作模式下的故障信息对网络描述矩阵进行修正形成故障判断矩阵,根据故障判断矩阵中的元素特征就可判断故障发生区间。此算法能够解决像馈线末端故障、环网故障、多电源环网多重故障这些在其它算法中不能全部解决的问题,而且计算量小。A general matrix algorithm which can judge the fault separately is presented according to all the fault conditions. At first, this algorithm divides the distribution network into many small areas by open switch, and finds out the small area generally that has fault according to the fault information. It makes full use of system＇s structural characteristics to set three kinds of work patterns in PTU. It forms a network description matrix of the fault area on the basis of fault information which is from different work model, changes the description matrix and obtains a fault judgment matrix, finds out the concrete point that is fault according to the fault judge matrix. This algorithm can solve the problems of feeder terminal fault,circle net fault and multi source multi fault, all of which can not be solved in other algorithm completely, and has small amount of calculation.

关 键 词：配电网络 馈线自动化 故障定位 故障小区 故障判断矩阵 

分 类 号：TM755[电气工程—电力系统及自动化]