双制式列车断路器合闸浪涌过电压研究  

Research on circuit-breaker closing surge overvoltage of dual-system train

作　　者：李雪飞 孙文斌 李明泽 马庆安[3] 代骏 LI Xuefei;SUN Wenbin;LI Mingze;MA Qing’an;DAI Jun(CRRC Changchun Railway Vehicle Co.,Ltd,Changchun 130062;School of Automation and Information Engineering,Sichuan University of Science&Engineering,Yibin,Sichuan 644000;School of Electrical Engineering,Southwest Jiaotong University,Chengdu 611730)

机构地区：[1]中车长春轨道客车股份有限公司,长春130062 [2]四川轻化工大学自动化与信息工程学院,四川宜宾644000 [3]西南交通大学电气工程学院,成都611730

出　　处：《电气技术》2023年第9期28-33,共6页Electrical Engineering

摘　　要：双制式列车在通过电分相或交直流转换段时,列车进行断路器操作产生操作过电压进而通过高压电缆的分布电容耦合至车体产生车体浪涌过电压,可能严重威胁车载弱电设备的安全运行。本文分析双制式列车合闸浪涌过电压的产生机理,为避免高阶微分方程的求解,将其分为两个振荡模式的乘积;搭建Simulink仿真模型,对双制式列车的合闸暂态过程进行仿真分析,并对列车浪涌过电压进行现场实测和频谱分析,理论分析与现场实测结果一致。研究表明,列车在经过电分相或交直流转换段时,最高可产生2000V的车体浪涌过电压,该过电压在5μs内逐渐衰减至零,计算模型、仿真模型与实测数据误差率分别为17%和0.15%,因此,本文模型具有较高的可行性,可推进解决双制式列车浪涌冲击问题。When a dual-system train passes through the neutral-section,the catenary voltage is coupled to the vehicle body through the high voltage cable distribution capacitance,resulting in a surge overvoltage in the vehicle body,which may seriously threaten the safe operation of the on-board electronic equipment.In this paper,the generation mechanism of the circuit-breaker closing overvoltage of the dual-system train is analyzed.In order to avoid the solution of higher-order differential equations,the overvoltage is decomposed into two oscillation modes.A Simulink model is built to analyze the closing transient process of the dual-system train.On-site measurement of surge overvoltage is also conducted.The theoretical and on-site measurement results are consistent.Studies show that a surge overvoltage of up to 2000V on the vehicle body maybe be generated and it will decays to zero within about 5 microseconds.The error rates of the calculation model,simulation model,and measured data are 17%and 0.15%,respectively.Therefore,the model proposed in this paper has high feasibility.

关 键 词：双制式列车 浪涌过电压 高压电缆 电容耦合 

分 类 号：U264.35[机械工程—车辆工程]