高速铁路10~35 kV电力电缆与信号电缆平行间距研究  

Research on Parallel Distance between 10~35 kV Power Cable and Signal Cable in High Speed Railway

作　　者：熊伟[1] XIONG Wei(China Railway Siyuan Survey and Design Group Co.,Ltd.,Wuhan 430063,China)

机构地区：[1]中铁第四勘察设计院集团有限公司,武汉430063

出　　处：《铁道标准设计》2021年第8期139-143,165,共6页Railway Standard Design

基　　金：国家铁路局铁路工程技术标准编制计划课题(2017JS019)。

摘　　要：随着我国铁路规模的不断扩大,作为高速铁路系统可靠运行的重要组成部分,铁路贯通线和信号电缆的安全运行是铁路设计的重点,电力电缆与信号电缆间的电磁干扰问题是需要着重考虑的问题。而目前对于铁路电力线路与信号电缆线路平行敷设时的安全距离缺乏深入研究。为解决上述问题,通过仿真计算和工程测试验证,建立有贯通地线的铁路三相电力电缆单相短路故障时对邻近敷设的信号电缆产生纵向感应电动势的计算模型,对铁路单芯电力电缆对信号电缆的电磁干扰进行研究,提出不同电压等级电力电缆与信号电缆在平行敷设时允许最小间距,最后通过感应电压测试实验,验证了所提出的纵向感应电动势计算模型的正确性,并对不同的铁路类型提出电力电缆、信号电缆以及贯通地线的敷设方式,以及降低电力电缆对信号电缆电磁干扰的技术方案。With the continuous expansion of railway in China,the safe operation of the power through line and signal cable,which server as an important part of reliable operation of high-speed railway system,becomes the key point in railway design,and the electromagnetic interference between power cable and signal cable should be addressed.At present,less research is conducted on the safety distance when the railway power through line and the signal cable line are set in parallel.To solve the problem,this paper,with calculation and simulation verification,establishes a calculation model for longitudinal voltage induced on signal cable when single-phase fault occurs in power through line with ground line.In addition,the electromagnetic interference of single-core power cable with signal cable is analyzed,and the minimum limit distance between signal cable and power through line of different rated voltage in parallel is proposed.Finally,the correctness of the proposed model is verified by the induced voltage experiment.According to different railway types,the laying methods for power through line,signal cable and ground line,and the technical schemes of reducing electromagnetic interference of power through line with signal cable are proposed.

关 键 词：高速铁路 电力电缆 信号电缆 感应电压 平行间距 

分 类 号：U228[交通运输工程—道路与铁道工程] U238