高速铁路牵引网双边供电方式下的故障测距策略研究  

Study on Fault Location Strategy for Traction Electric Network of High-speed Railway in Double-end Feeding Mode

作　　者：陈纪纲[1] 许晓蓉[1] 林国松[2] 林宗良[1] 李原 CHEN Jigang;XU Xiaorong;LIN Guosong;LIN Zongliang;LI Yuan(China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031,China;Southwest Jiaotong University,Chengdu 610031,China)

机构地区：[1]中铁二院工程集团有限责任公司,成都610031 [2]西南交通大学,成都610031

出　　处：《高速铁路技术》2021年第5期41-45,共5页High Speed Railway Technology

基　　金：中铁二院工程集团有限责任公司科技开发计划(KSNQ202056)。

摘　　要：随着我国高速铁路牵引供电系统的快速发展,为更好地提高牵引网的供电能力,双边供电方式的牵引网成为选择。本文分析了高速铁路双边全并联AT供电方式下的电路模型,探讨了AT吸上电流比、横联线电流比、上下行电流比与距离的关系特性,分析了传统AT牵引网故障测距原理在双边供电方式下的适应性,提出了采用双端变电所测距装置协同的测距策略,并基于Matlab/Simulink仿真验证了故障测距策略的合理性。With the rapid development of the traction power supply system of high-speed railway in China,in order to better improve the power supply capacity of the traction network,traction network with double-end feeding mode has become the choice.In this paper,the circuit model of double-end full parallel AT power supply mode for the high-speed railway is analyzed,and the relationship between AT's current ratio,cross-line current ratio,up-down current ratio,and distance is discussed.The adaptability of the traditional AT traction network fault location principle in bilateral power supply mode is analyzed,and a fault location strategy with the cooperation of two-terminal substation fault location devices is proposed.The rationality of the fault location strategy is verified based on Matlab/Simulink simulation.

关 键 词：牵引供电系统 AT供电方式 双边供电 故障测距 

分 类 号：U226[交通运输工程—道路与铁道工程]