基于GPS时间同步的地铁直流牵引供电系统故障测距研究  

Research on fault location of subway DC traction power supply system based on GPS time synchronization

作　　者：魏荣耀 时光 庄琨 夏加富 Wei rongyao;Shi guang;Zhuang kun;Xia jiafu(Qingdao Metro Line,Qingdao 266000,China;ChinaWuhan Institute of Marine Electric Propulsion,Wuhan 430034,China)

机构地区：[1]青岛市地铁,山东青岛266000 [2]武汉船用电力推进装置研究所,武汉430064

出　　处：《船电技术》2023年第8期85-88,共4页Marine Electric & Electronic Engineering

摘　　要：本文研究了基于GPS时间同步的地铁直流牵引供电系统故障测距。首先介绍了时域模型下地铁直流牵引供电系统短路模型,然后针对该模型的双端电流电压法故障测距的原理和测距误差进行分析,最后基于GPS时间同步与双端电流电压法进行实践与短路试验验证了该方法的有效性。This paper studies the fault location of subway DC traction power supply system based on GPS time synchronization.Firstly,the short-circuit model of subway DC traction power supply under the time domain model is introduced.Then the principle of fault location and distance measurement error of the double-terminal current-voltage method are analyzed.Finally,short-circuit testings based on GPS time synchronization and double-terminal current-voltage method verify the effectiveness of the method.

关 键 词：时间同步 双端电流电压 故障测距 

分 类 号：U231.8[交通运输工程—道路与铁道工程]