摘要
高速铁路由于列车速度快、牵引功率大,且高速运行时持续取流,对与其邻近的普速铁路沿线敷设的电力电缆产生了明显的电磁干扰.为此,通过对感性耦合和阻性耦合机理分析,研究高速铁路对电力电缆感应电压的干扰机理;运用CDEGS软件建立高速铁路对电力电缆电磁干扰仿真模型,总结电力电缆感应电压影响因素;基于计算结果对仿真模型进行验证.结果表明:在邻近情况下,电力电缆感应电压与牵引负荷、电力电缆、土壤结构参数有关;其中,平行长度、负荷电流、土壤电阻率和短路电流对电力电缆感应电压有显著影响;高速铁路与普速铁路之间应根据电缆长度的不同设置合理的防护距离,且采用中点接地和单端接地方式能有效地降低电力电缆感应电流.
Due to high speed,large traction power and continuously receiving current in operation,high-speed railways generate obvious electromagnetic interference on the power cables of adjacent normal-speed railways.Based on the analysis of inductive coupling and resistive coupling mechanism,the interference from high-speed railways on the induced voltage of power cables was analyzed,and CDEGS software was used to establish the electromagnetic simulation model of high-speed railway interference to the power cables of adjacent normalspeed railways,and the factors affecting the induced voltage of power cables are summarized.The simulation model was verified on the basis of the calculation results.The results show that the induced voltage of power cables near high-speed railways is related to the traction load,parameters of power cable and soil structure.Of them,the parallel length,load current,soil resistivity and short-circuit current have significant influence on the induced voltage of power cables.The protection distance between high-speed railways and normal-speed railways should be set according to different cable lengths.Middle grounding and single-terminal grounding can effectively reduce the induced current of power cables.
作者
解绍锋
孙镜堤
骆冰祥
苏鹏
李静雯
XIE Shaofeng;SUN Jingdi;LUO Bingxiang;SU Peng;LI Jingwen(School of Electrical Engineering,Southwest Jiaotong University,Chengdu 611756,China)
出处
《西南交通大学学报》
EI
CSCD
北大核心
2021年第1期206-213,共8页
Journal of Southwest Jiaotong University
基金
国家自然科学基金(51877182)
中铁上海设计院集团科技开发项目(2015-151)的支持。
关键词
高速铁路
电力电缆
牵引供电系统
电磁干扰
防护措施
high-speed railway
power cables
traction power supply system
electromagnetic interference
protective method
