基于双端行波测距的配网线路故障多重定位方法  

Multiple location method of distribution network line fault based on double-terminal traveling wave distance measurement

作　　者：李娟 李睿 王亮 LI Juan;LI Rui;WANG Liang(State Grid Tongchuan Electric Power Supply Company,Tongchuan 727031,China;Hebei Huawan Electronic Technology Co.,Ltd.,Baoding 071051,China)

机构地区：[1]国网铜川供电公司,陕西铜川727031 [2]河北华万电子科技有限公司,河北保定071051

出　　处：《电子设计工程》2023年第6期90-93,98,共5页Electronic Design Engineering

基　　金：陕西省科技项目(5226TC20005S)。

摘　　要：传统的故障定位算法未有效整理和分析故障信息,导致定位过程受到冗余信息的干扰,造成定位不准确的问题。为此,该文提出了基于双端行波测距的配网线路故障多重定位方法。在线路首端采用电流传感器采集线路信息,在线路末端采用电压传感器采集线路信息,并在分析故障信息的基础上得到区间故障信息向量。在双端行波测距原理和北斗导航技术的支持下,求出故障行波到达线路两端的时间,并以此判断故障到端点的距离。对时差和总时间的比值进行分析,从而确定故障点位置。仿真结果表明,该方法在线路始、末两端能够精准获取故障数据,且具有精准定位效果。Traditional fault location algorithms do not effectively sort out and analyze fault information,resulting in the interference of redundant information during fault location,resulting in inaccurate location. Therefore,this paper proposes a multi-fault location method based on double-terminal traveling wave location. The current sensor is used to collect the line information at the end of the line,and the voltage sensor is used to collect the line information at the end of the line,and the interval fault information vector is obtained on the basis of analyzing the fault information. With the support of the twoterminal traveling wave ranging principle and Beidou navigation technology,the time when the fault traveling wave arrives at both ends of the line is calculated,and the distance from the fault to the end point is determined. The ratio of time difference to total time is analyzed to determine the location of the fault point. Simulation results show that the method can accurately obtain fault data at the beginning and end of the circuit,and has accurate positioning effect.

关 键 词：双端行波测距 配网线路 故障 多重定位 故障行波 

分 类 号：TM726[电气工程—电力系统及自动化]