期刊论文

Analysis of the influence of metro stray current on transformer DC bias

中文

电力科学与技术学报

1673-9140

2024

39

1

134-143

10.19781/j.issn.1673-9140.2024.01.013

国网湖南省电力有限公司科技项目(164100003187)。

本校为其他机构

地铁运行过程中泄漏的杂散电流引起地电位波动变化,易导致附近接地变压器出现直流偏磁现象。为解决此类问题,首先,建立了地铁运行等值电阻网络模型,实现杂散电流实时数值计算;然后,进一步推导了杂散电流场位方程,实现地铁机车运行时...展开更多 地铁运行过程中泄漏的杂散电流引起地电位波动变化,易导致附近接地变压器出现直流偏磁现象。为解决此类问题,首先,建立了地铁运行等值电阻网络模型,实现杂散电流实时数值计算;然后,进一步推导了杂散电流场位方程,实现地铁机车运行时附近大地电位空间分布的动态模拟;最后,基于杂散电流引起的大地电位分布结果与交流电网的等效直流电阻模型,实现接地变压器...

The metro stray current leaked during the train operation causes the surface potential fluctuation,resulting nearby transformer DC bias.Firstly,a equivalent resistance network model was established to realize actual time numerical calculation of stray current.Then,the s...MORE The metro stray current leaked during the train operation causes the surface potential fluctuation,resulting nearby transformer DC bias.Firstly,a equivalent resistance network model was established to realize actual time numerical calculation of stray current.Then,the stray current field equation was further derived,and ...