Overvoltage in CRH Reactor Lifting Process and Simulation Analysis of Restraining Measures

LYU Fangcheng; HAN Fang; WANG Fochi; JIA Buchao

doi:10.13296/j.1001-1609.hva.2016.02.001

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Overvoltage in CRH Reactor Lifting Process and Simulation Analysis of Restraining Measures

更新时间：2025-04-26

- Overvoltage in CRH Reactor Lifting Process and Simulation Analysis of Restraining Measures
- High VoltageApparatus Vol. 52, Issue 2, Pages: 1-6+12(2016)
- 作者机构：
  
  1. 华北电力大电气与电子工程学院
  2. 南车集团青岛四方机车车辆股份有限公司
- 作者简介：
- 基金信息：
- DOI：10.13296/j.1001-1609.hva.2016.02.001
  CLC： U223.63;U266
- Published：2016
- 稿件说明：
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[1]律方成,韩芳,汪佛池,贾步超.动车组升降弓过电压及抑制措施仿真分析[J].高压电器,2016,52(02):1-6+12.

LYU Fangcheng, HAN Fang, WANG Fochi, et al. Overvoltage in CRH Reactor Lifting Process and Simulation Analysis of Restraining Measures[J]. High voltageapparatus, 2016, 52(2): 1-6+12.
[1]律方成,韩芳,汪佛池,贾步超.动车组升降弓过电压及抑制措施仿真分析[J].高压电器,2016,52(02):1-6+12. DOI： 10.13296/j.1001-1609.hva.2016.02.001.

LYU Fangcheng, HAN Fang, WANG Fochi, et al. Overvoltage in CRH Reactor Lifting Process and Simulation Analysis of Restraining Measures[J]. High voltageapparatus, 2016, 52(2): 1-6+12. DOI： 10.13296/j.1001-1609.hva.2016.02.001.

摘要

动车组在过分相、降弓等工况下均可产生过电压问题

针对动车组在站内升降弓过程中出现的过电压现象

文中应用MATLAB搭建受电弓升降等效电路

建立电磁式电压互感器的仿真模型;结合仿真和理论分析指出电压互感器在受电弓下降过程中发生低频铁磁振荡;升弓过程是电源电压稳态分量和回路自身高频振荡暂态分量的叠加产生过电压。对比升降弓的仿真结果可知升降弓会给电压互感器带来不同的危害。文中提出在动车组降弓时

切除高压电缆可以有效地降低电压互感器的励磁电流。

Abstract

China Railway High-speed（CRH）train will produce overvoltage problem during passing neutral section

lifting reactor and so on. Aiming at this phenomenon of overvoltage

this paper builds reactor lift equivalent circuit by using the simulation software MATLAB

establishing simulation model of potential transformer installed on the roof. Combining simulation and theory

it is pointed that low-voltage transformer ferromagnetic oscillations in the reactor drop process will result in overvoltage. In the reactor raise process

overvoltage is superimposed on the steady-state component of the supply voltage and transient component of high frequency oscillation circuit itself. Comparing the results

it indicates that the two simulations will bring different harms to the voltage transformer. This paper presents to remove high voltage cable in reactor lowering;it can effectively reduce the excitation current.

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