摘要
文章介绍了城市轨道交通杂散电流的形成和危害,按照杂散电流泄漏路径,建立了轨道—排流网—大地—埋地管道数学模型,同时,对影响济南市轨道交通R3号线杂散电流的各因素进行了数值分析。分析结果表明,排流宜作为临时应急措施;当排流柜不投入运行时,供电区间、牵引电流、轨道对排流网过渡电阻和轨道纵向电阻对轨道对地电位和杂散电流有明显影响,而土壤电阻率、埋地金属纵向电阻率对轨道对地电位和杂散电流的影响可忽略,并在此基础上提出了杂散电流防护措施。
This paper introduces the formation and harm of stray current in urban rail transit.According to the leakage path of stray current,and establishes a mathematical model of track-drainage network-ground-buried pipeline according to the leakage path of stray current.At the same time,the various factors affecting the stray current of Jinan Rail Transit Line R3 are numerically analyzed.The analysis results show that drainage should be used as a temporary emergency measure.when the drainage cabinet is not put into operation,the power supply interval,traction current,transition resistance of the track to the drainage network and longitudinal resistance of the track have obvious influence on track-toground potential and stray current.while the influence of soil resistivity and longitudinal resistivity of buried metal on track-to-ground potential and stray current can be ignored.On this basis,the stray current protection measures are proposed.
作者
赵新赢
许圣乾
孔祥苏
邓肖燕
孙二杰
Zhao Xinying;Xu Shengqian;Kong Xiangsu;Deng Xiaoyan;Sun Erjie(Jinan Rail Transit Group Construction and Investment Co.,Ltd.,Jinan,Shandong 250101)
出处
《工程技术研究》
2022年第5期10-13,共4页
Engineering and Technological Research
关键词
城市轨道交通
杂散电流
数字模型
数值分析
urban rail transit
stray current
digital model
numerical analysis
作者简介
赵新赢,男,硕士,工程师,研究方向为门梯设计施工管理。
