Research on influence and control measures of metro rai transit on AC network in Changsha

LIU Weiguo; ZHOU Weihua; YE Huisheng; PENG Ping; WU Xiaowen

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Research on influence and control measures of metro rai transit on AC network in Changsha

更新时间：2025-11-18

- Research on influence and control measures of metro rai transit on AC network in Changsha
- Vol. 37, Issue 1, Pages: 7-9+13(2017)
- 作者机构：
  
  国网湖南省电力公司电力科学研究院
- 作者简介：
- 基金信息：
- DOI：
  CLC： TM406;TM721.1
- Published：2017
- 稿件说明：
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[1]刘味果,周卫华,叶会生,彭平,吴晓文.长沙地铁轨道交通对交流电网的影响及治理措施的研究[J].湖南电力,2017,37(01):7-9+13.

LIU Weiguo, ZHOU Weihua, YE Huisheng, et al. Research on influence and control measures of metro rai transit on AC network in Changsha[J]. 2017, 37(1): 7-9+13.
[1]刘味果,周卫华,叶会生,彭平,吴晓文.长沙地铁轨道交通对交流电网的影响及治理措施的研究[J].湖南电力,2017,37(01):7-9+13. DOI：

LIU Weiguo, ZHOU Weihua, YE Huisheng, et al. Research on influence and control measures of metro rai transit on AC network in Changsha[J]. 2017, 37(1): 7-9+13. DOI：

摘要

在城市地铁轨道交通中

供电牵引网采用直流供电方式

部分牵引电流经钢轨泄漏到地下形成杂散电流

引起周边电力变压器产生直流偏磁现象。文中分析了地铁轨道交通对变压器的影响

通过采用电容隔直方式抑制变压器中性点直流电流

有效解决了变压器直流偏磁问题

保障了主变运行安全。

Abstract

In the urban metro rail transit

rail traction generally adopts DC power supply.When part of traction direct current leaking into the earth by steel rail

stray current are formed

which brings on transformer DC bias in the nearby substation.In this paper

the influence of metro rail transit on the transformer is analyzed.And by connecting DC-isolation capacitor in series with the neutral of the transformer

DC current has been eliminated and safe operation of the transformer has been ensured.

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Graduate School of Shenzhen, Tsinghua University

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