基于单端量的同塔并架4回线路故障测距方法  

A New Fault Location Algorithm for Jointed Four Transmission Lines Based on Single-ended Data

作　　者：任明珠[1] 邰能灵[1] 袁成 熊超英 

机构地区：[1]上海交通大学电气工程系,上海200240 [2]上海市超高压输变电公司,上海200063

出　　处：《上海交通大学学报》2009年第8期1228-1232,共5页Journal of Shanghai Jiaotong University

基　　金：上海市曙光计划资助项目(07SG11);教育部新世纪优秀人才计划资助项目(NCET-08-0356)

摘　　要：结合同塔4回线路的特点,提出基于单端实时电气量的同塔并架4回线路故障测距方法.利用故障状态各回线路序电压的内在联系建立方程,从原理上消除了过渡电阻对测距的影响,可以应用于2组电压等级不同的同塔双回线组成的4回线路,以及电压等级相同的同塔4回线路中.该算法理论分析简单,计算简便.仿真测试验证此测距方法行之有效,并且不受过渡电阻的影响,运算量比其他测距算法小.Taking account of the construction features of jointed transmission lines, a new fault location algorithm was proposed based on the single-ended data of lines. The algorithm takes full advantage of the internal relations of each line＇s sequence voltage in fault state to establish equations, eliminates the effect of the transition resistance in principle, and can be used for single line fault location in jointed lines made up of two groups of different voltages paralleled double circuit line, and the same voltage jointed four lines on same tower. The analysis and calculation of the algorithm are simple and convenient. The simulation result indicates that the algorithm is quite useful and not influenced by the transition resistance.

关 键 词：高压输电线路 故障测距 线间零序互阻抗 过渡电阻 单端量 4回线路 

分 类 号：TM773[电气工程—电力系统及自动化]