基于多点电流测量的输电线路故障定位方法的研究与分析
2016-03-21王志远国网新疆乌鲁木齐供电公司乌鲁木齐830011
黄 擎 王志远(国网新疆乌鲁木齐供电公司,乌鲁木齐 830011)
基于多点电流测量的输电线路故障定位方法的研究与分析
黄擎王志远
(国网新疆乌鲁木齐供电公司,乌鲁木齐830011)
摘要输电线路是电力系统的重要组成部分,输电线路的可靠运行关系着国民经济的健康良好发展。输电线路分布面积广、范围大,如何快速准确地分析判断线路故障位置,排除故障,对于保障输电线路的可靠运行是十分关键的。本文主要对根据多点电流测量的输电线路行波故障定位法进行了分析和讨论,该方法相对传统行波分析,对于故障点位置的判断精度有较大改善,对于输电线路的故障定位有一定的参考价值。
关键词:输电线路;故障定位;多点测量
Research and Analysis of Fault Location Method for Transmission Line based on Multi Point Current Measurement
Huang QingWang Zhiyuan
(Urumqi Power Supply Company, Urumqi 830011)
Abstract Transmission line is an important part of the power system, the reliable operation of the transmission line is related to the healthy development of the national economy. The distribution area of the transmission line is wide, the range is large, and the analysis of the fault location and fault location is very important for ensuring the reliable operation of the transmission line. In this paper, the fault location method for transmission line traveling wave based on multi point current measurement is analyzed and discussed, relative to the traditional traveling wave analysis, the accuracy of the fault location is improved, and the fault location of the transmission line has a certain reference value.
Keywords:transmission line; fault location; multi point measurement
输电线路是电能输送的通道,肩负着电力输送的重要任务。随着我国电网建设的不断推进,距离长、容量大的高电压超高电压等级的输电线路的应用越来越多。由于输电线路长期暴露在外部环境中,很容易受到日照、雨雪、树木接触、以及山体滑坡等外界因素的影响,电力系统输电线路故障时有发生,占据电力系统故障的绝大多数,给电力公司和用户造成大量损失。由于人工巡检费时费力,效率比较低,很难满足电力系统可靠运行的要求。因此,微机线路保护故障定位逐步得到广泛应用,其中根据行波理论的故障定位分析法的应用最为理想,也最为广泛。本文针对现有行波故障定位法准确度低的问题,应用多点测量的方法,使测量精确度得到大幅提高[1]。……
