﻿ 同塔双回输电线路接地故障点定位方法研究

# 同塔双回输电线路接地故障点定位方法研究A Fault Location Study on Double-Circuit Transmission Lines on the Same Tower

Abstract: Double circuit transmission lines on the same tower is the effective method to solve the occupied land which was erected by the transmission lines, across houses and so on, which caused the contradiction between the urban planning and construction and the lives of the residents. However, in the event of a failure, the main outstanding issue is how to locate the fault more accurately in the case of the effect of the same tower double circuit transmission lines of magnetic coupling on the measured data. The principle of the method is based on S transformation to utilize the energy of the fault phase current signal and the corresponding average voltage to detect and locate the fault of the same tower transmission line. A phase to earth fault as an example is researched in this paper and then the modeling and simulation through the application PSCAD is conducted. Further, the effectiveness of the proposed method is verified, meanwhile, it will lay a foundation for researching on the more towers of transmission line fault.

[1] 张嘉, 葛荣良. 同塔多回输电技术特点及其应用分析[J]. 华东电力, 2005, 33(7): 23-26.

[2] 王刚, 张建文, 胡希文, 卓自明. 基于S变换的并行输电线路接地故障点定位方法[C], 2008.

[3] 林军. 超高压同杆双回线多重故障的计算[J]. 中国电机工程学报, 2010, 30(13): 89-93.

[4] 林富洪. 基于分布参数模型线路保护及故障测距[D]. 华北电力大学, 2010.

[5] 索南加乐, 侯卓, 宋国兵, 张健康. 基于分布参数模型的高压直流输电线路距离保护[J]. 电力系统自动化, 2011, 35(8): 12- 15.

[6] 陈霖, 梁志坚, 谭建成. 基于参数估计的同杆双回单线故障测距[J]. 电气开关, 2011, 49(2): 22-24.

[7] C. R. Pinnegar, L. Mansinha. The S-transform with windows of arbitrary and varying shape. Geophysics, 2003, 68(1): 381-385.

[8] C. R. Pinnegar, L. Mansinha. Time-local fourier analysis with a scalable, phase-modulated analyzing function: The S-transform with a complex window. Signal Processing, 2004, 84(7): 1167- 1176.

[9] 陈学华, 贺振华. 改进的S变换及在地震信号处理中的应用[J]. 数据采集与处理, 2005, 20(4): 449-453.

Top