电工技术学报2021，Vol.36Issue(23)：4851-4863,13.DOI:10.19595/j.cnki.1000-6753.tces.210923
城市轨道交通杂散电流治理的综述与评估
Review and Evaluation of Stray Current Mitigation for Urban Rail Transit
摘要
Abstract
Stray current causes inevitable corrosion to structures near electric transportation systems, especially in DC urban rail transit. The paper considers the issue of stray current mitigation discussing what can be done for design and existing systems, sticking to applicable standards and consolidated protection practice. Mitigation measures may be devised for a new constructed system, such as the optimization of traction substation positions, reducing the longitudinal resistance of the running rails and return circuit, and using an additional stray current collection system (to be included in the track bed during construction). As for an existing system, besides increasing the total cross section of the aforementioned return circuit and stray current collection system by adding parallel conductors or cross-bonds, it is recommended to employ static converter units (e.g. negative resistance converters) to control the stray current in the return circuit. These units can be deployed in specific points where analysis or measurement indicates the large rail potential or incipient corrosion is spotted out.关键词
城市轨道交通/杂散电流/腐蚀/杂散电流收集/杂散电流缓解/负阻变换器Key words
Urban rail transit/stray current/corrosion/stray current collection/stray current mitigation/negative resistance converter分类
信息技术与安全科学引用本文复制引用
Sahil Bhagat,杨晓峰,王淼,Andrea Mariscotti..城市轨道交通杂散电流治理的综述与评估[J].电工技术学报,2021,36(23):4851-4863,13.基金项目
This work is supported by the Key Program of National Natural Science Foundation of China(51737001). （51737001）
