考虑电网拓扑结构的行波故障定位方法  

Fault Location with Traveling Wave Considering Network Topological Structure

作　　者：曲广龙[1] 杨洪耕[1] 吴晓清[1] 周辉[1] 

机构地区：[1]四川大学电气信息学院,成都610065

出　　处：《电力系统及其自动化学报》2013年第6期117-122,共6页Proceedings of the CSU-EPSA

摘　　要：在双端行波故障定位方法的基础上做出改进,提出了一种基于电网拓扑结构信息以及初始行波到达时间差的输电网行波故障定位新方法。该方法不需要通过获取断路器的开断状态信号来确定出故障线路,这样有效避免了断路器信号错误或未检测到断路器信号时对故障定位准确性的影响。在电网中部分变电站配置行波定位装置,当发生故障时,通过各监测点行波定位装置两两之间的不同配对组合,得到相对应的初始行波到达时间差,再依据电网的拓扑结构进行综合处理和容错分析,找到实际故障点。仿真结果表明,该方法能对电网输电线路上发生的故障进行可靠的定位,并且有较强的容错性。According to double-terminal traveling wave fault location algorithm, a new method has been presented, which is based on the topological structure of power grid and the time difference of initial voltage traveling wave arrival. This method do not depend on the status information of circuit breakers, which avoid the influence by the error signal of breakers. When fault occurred, the traveling wave fault location equipments, which located in some substations, recorded the arrival time of the initial voltage of traveling wave on the based of the different pairing combinations be- tween each traveling wave positioning device of monitoring points. Then the fauh-tolerant analysis and fusion process- ing is made to find the actual fault point. The results of simulation indicate that this method had strong fault tolerance and high fault location accuracy.

关 键 词：输电网 双端行波定位 最短路径 拓扑结构 

分 类 号：TM773[电气工程—电力系统及自动化]