改进型城市轨道交通杂散电流实验平台的设计与验证
Design and verification of an improved experimental platform for stray current in urban rail transit
李亚宁 1康宏 1王烨 2李文飞 1焦蒙 1张文财1
作者信息
- 1. 兰州交通大学自动化与电气工程学院,甘肃兰州 730070
- 2. 兰州交通大学环境与市政工程学院,甘肃兰州 730070
- 折叠
摘要
城市轨道交通发展过程中,杂散电流过大这一问题亟需解决.由于杂散电流分布随机且难以进行现场验证,本研究对原有杂散电流实验平台进行了改进,以真实土壤环境模拟水溶液,通过测量土壤电阻率对过渡电阻进行计算,以弥补现有文献的不足.首先,建立"钢轨-排流网"及"钢轨-排流网-大地"数学模型,并对钢轨、排流网等结构的电流、电压解析表达式进行推导.其次,搭建仿真模型,将数学解析结果与仿真结果进行对比验证.再次,将实测与仿真结果进行对比,对改进型杂散电流实验平台的准确性进行验证.最后,基于实验结果对杂散电流的影响因素进行分析.相关结论为城市轨道交通杂散电流的研究提供了实验数据与理论参考.
Abstract
With the rapid development of urban rail transit,there have been an urgent problem of excessive stray current.Because the stray current distribution is random and difficult to verify in the field,we designed an improved stray current experimental platform by replacing the simulated aqueous solution with a real soil environment and by calculating the transition resistance by measuring the soil resistivity,which makes up for the defects in the previous references.Firstly,the mathematical models of rail-drainage net and rail-drainage net-ground were established,and the analytical expressions of current and voltage of rail,drainage net and other structures were derived.In addition,the simulation model was built,and the mathematical analysis results were compared with the simulation results.Secondly,the accuracy of the improved stray current experimental platform was verified by comparing the measured and simulation results.Finally,based on the experimental results,the influence factors of stray current were analyzed.The relevant conclusions provide experimental data and theoretical reference for the study of stray current in urban rail transit.
关键词
城市轨道交通/杂散电流/实验平台/过渡电阻/土壤电阻率Key words
urban rail transit/stray current/experimental platform/transition resistance/soil resistivity引用本文复制引用
基金项目
National Natural Science Foundation of China(51476073)
National Natural Science Foundation of China(51266004)
Natural Science Foundation of Gansu Province(138RJZA199)
出版年
2024
国家科技期刊平台
NSTL
万方数据