中国电机工程学报2023，Vol.43Issue(23)：9059-9071,13.DOI:10.13334/j.0258-8013.pcsee.221759
地铁杂散电流引起动态地电位分布建模及影响因素分析
Modeling and Influencing Factors Analysis of Dynamic Potential Distribution Caused by Metro Stray Current
摘要
Abstract
The subway operation causes the transformer DC bias and buried pipeline corrosion,which requires the interference and impact assessment of metro stray current.A modeling method of dynamic earth potential distribution caused by metro stray current is proposed.By using the multiple power supply sections as an equivalent resistance network model with multi-power accumulation,the real-time distribution calculation of stray current is realized.Based on the numerical integration of the point current source electric field and geographical information,the dynamic calculation of the potential during the train turnover time is realized.Using CDEGS software simulation and field measurement data,the accuracy of the proposed model is verified.Taking two metro lines as an example,the potential fluctuation interval is calculated,and the stray current disturbances range is evaluated with potential gradient.The influence of train operating conditions,rail-ground transition resistance and soil resistivity factors on potential gradient is analyzed.关键词
地铁牵引供电系统/杂散电流/地表电位/电位梯度/影响因素Key words
metro traction power supply system/stray current/earth surface potential/potential gradient/influencing factors分类
建筑与水利引用本文复制引用
倪砚茹,曾祥君,喻锟,程新翔,唐雨杭,卓超..地铁杂散电流引起动态地电位分布建模及影响因素分析[J].中国电机工程学报,2023,43(23):9059-9071,13.基金项目
湖南省自然科学基金(面上项目)(2022JJ30043) （面上项目）
湖南省研究生科研创新项目(CX20210787) （CX20210787）
国家电网公司科技项目(5100-202199276A-0-0-00).Project Supported by Natural Science Foundation of Hunan Province(general program)(2022JJ30043) （5100-202199276A-0-0-00）
Postgraduate Scientific Research Innovation Project of Hunan Province(CX20210787) （CX20210787）
Science and Technology Project of State Grid Corporation(5100-202199276A-0-0-00). （5100-202199276A-0-0-00）
