一种基于FTU的馈线故障定位优化算法

An optimized algorithm for feeder fault location based on FTU

提出一种基于FTU的配电网馈线故障定位优化算法。当馈线发生故障时,必然会形成故障电流支路,通过远方监控终端所获得的故障电流及其方向信息,将该信息加入网络描述矩阵D的对角线上,并对该矩阵进行修改,可以获得描述故障电流支路的网络结构的故障判断矩阵P,依据矩阵P可以快速地判断出故障电流支路的末端节点,从而定位出故障区段。采用十字链表存储网络描述矩阵D和故障判断矩阵P,由于十字链表适合于进行双向搜索,可以有效地减小存储空间和进一步提高故障区段定位速度。

This paper presents an optimized algorithm for feeder fault-location based on FTU. When the fault feeder occurs, the corresponding fault overcurrent branch circuit will be built, then the fault judgement matrix P will be formed by adding the FTU information about the fault overcurrents and their directions to the describing matrix D. According to the values of the related elements in the matrix P, the end node of the fault overcurrent branch circuit can be identified rapidly and correctly, consequently the fault feeder can be judged. Because of the crosslinked list suitable for bidirectional search, applying it to store the matrix D and P, can reduce the storage space efficiently, and improve the speed of the fault feeder-location further.