一种牵引网故障定位的新方法  

A new method of fault location for traction network

作　　者：钱澄浩[1] 何正友[1] 胡海涛[1] 吴双[1] 林圣[1] 

机构地区：[1]西南交通大学电气工程学院,四川成都610031

出　　处：《电力系统保护与控制》2012年第3期21-25,30,共6页Power System Protection and Control

基　　金：国家自然科学基金(50878188);铁道部科技研究开发计划重点项目(2010J011-B)~~

摘　　要：针对牵引供电系统接触线上无法安装可监测故障信息的接触式互感器的问题,以及在全并联AT供电方式下牵引网故障定位存在测距不准的难题,提出了一种牵引网故障定位的新方法。该方法依赖多个故障定位单元和远程终端计算机,各单元放置在沿途固定距离的杆塔上(一般为1 km),具有磁场信号测量与故障信号发射的功能,每个单元均由电磁感应线圈、智能故障指示箱、GSM同步信号发射模块、太阳能供电模块四部分组成。与现有技术相比,本方法具有简便、经济、抗干扰性强等优点,可实现对牵引网故障的精确定位,保障了列车运行的安全性。In order to solve the problem that the contact transformer which is used to monitor the fault information cannot be installed on the contact line in traction power supply system and that positioning is not accurate when overhead contact system malfunction in all parallel AT traction system, a new method of fault location for traction network is proposed. The method relies on multiple fault location cells and the remote terminal computer. Each cell that consists of electromagnetic induction coil, intelligent fault indication box, GSM sync signal transmitter module and solar power module is placed on the tower along the way at a fixed distance （usually at 1 kin）, and they have the function of magnetic signal measurement and fault signal transmission. Compared with the existing technology, this method is simple, economical and has a strong anti-interference capability. By achieving the goal of accurately positioning fault location of traction network, the method paves a way for the safety of the train operation.

关 键 词：牵引网 电磁感应 磁场信号测量 故障信号发射 故障定位 

分 类 号：TM922.3[电气工程—电力电子与电力传动]