Simulation and Analysis on Induction Voltage of Metal Sheath for High Voltage Cable of EMU Roof

SONG Yongbao; CAO Baojiang; ZHENG Yue; GAO Guoqiang; WU Guangning

doi:10.13296/j.1001-1609.hva.2018.12.021

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Simulation and Analysis on Induction Voltage of Metal Sheath for High Voltage Cable of EMU Roof

更新时间：2025-04-26

- Simulation and Analysis on Induction Voltage of Metal Sheath for High Voltage Cable of EMU Roof
- High VoltageApparatus Vol. 54, Issue 12, Pages: 137-142(2018)
- 作者机构：
  
  西南交通大学电气工程学院
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2018.12.021
  CLC： U266
- Published：2018
- 稿件说明：
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[1]宋勇葆,曹保江,郑玥,高国强,吴广宁.动车组车顶高压电缆金属护层感应电压仿真与分析[J].高压电器,2018,54(12):137-142.

SONG Yongbao, CAO Baojiang, ZHENG Yue, et al. Simulation and Analysis on Induction Voltage of Metal Sheath for High Voltage Cable of EMU Roof[J]. High voltageapparatus, 2018, 54(12): 137-142.
[1]宋勇葆,曹保江,郑玥,高国强,吴广宁.动车组车顶高压电缆金属护层感应电压仿真与分析[J].高压电器,2018,54(12):137-142. DOI： 10.13296/j.1001-1609.hva.2018.12.021.

SONG Yongbao, CAO Baojiang, ZHENG Yue, et al. Simulation and Analysis on Induction Voltage of Metal Sheath for High Voltage Cable of EMU Roof[J]. High voltageapparatus, 2018, 54(12): 137-142. DOI： 10.13296/j.1001-1609.hva.2018.12.021.

摘要

高速动车组高压电缆金属护层在各车体同车顶单端连接是引起动车组升弓瞬间车体浪涌过电压的重要原因。为了掌握现有连接方式下此感应电压的特点

文中以CRH2型车为例

利用PSCAD/EMTDC软件建立包括接触网电源、高压电缆、车体及接地系统的等效模型。仿真研究升弓瞬间高压电缆金属护层感应电压传播过程

探究电缆长度、接触网电源等值参数及其电压相位对感应电压的影响。结果表明:升弓时电缆芯线电压可达60～70 kV

振荡持续时间在0.2 ms左右

振荡频率一般在60～80 kHz;金属护层感应电压幅值在不同车体之间沿电缆向前传播过程中逐渐减小;金属护层与车顶之间的电压差受电缆长度、接触网电源等值参数及其电压相位的影响较大。以上研究结果对合理设计高压电缆金属护层连接方式具有指导意义。

Abstract

The single-ended connection between high voltage cable metal sheath and roof of carriage plays an important role of surge overvoltage that created on carriage when a train raises its pantograph.Taking the CRH2 EMU as an example

an equivalent model including external power source

the high voltage cable

carriages and grounding system is established based on PSCAD/EMTDC software

to analyze the characteristics of induction voltage in the ungrounded terminal of high voltage cable with the existing connection mode.The propagation of induced voltage in high voltage cable is simulated.The influence of the cable length

the parameters of the power source and its phase on the induction voltage is analyzed.The results shows that the transient voltage is 60～70 k V

the transient duration is about 0.2 ms

the oscillation frequency is 60～80 kHz.The voltage amplitude decreases gradually along its direction of propagation.The voltage between the cable sheath and roof of carriage is mainly affected by the length of cables

the equivalent parameters of power source

and closing angles of voltage at pantograph lifting moment.The research findings obtained in this paper provide reference for the sheath connection form of high voltage cable.

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