城市轨道交通牵引供电系统专用轨回流技术综述  

Overview of a dedicated rail return current technology for traction power supply systems in urban rail transit

作　　者：燕振刚 田广辉[1] 陈显志[1] YAN Zhengang;TIAN Guanghui;CHEN Xianzhi(China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu Sichuan 610031,China)

机构地区：[1]中铁二院工程集团有限责任公司,四川成都610031

出　　处：《现代城市轨道交通》2024年第1期52-59,共8页Modern Urban Transit

摘　　要：近年来,为彻底解决城市轨道交通直流供电制式下杂散电流的泄漏问题,开始应用专用轨回流技术。为充分了解专用轨回流方式给城市轨道交通建设带来的变化和影响,文章首先采用对比的方法,分别从供电系统组成、牵引所间距、接地方式、接地保护、列车检修静调、限界、车辆和轨道设计几个方面与走行轨回流方式进行比较;其次,针对目前几种专用轨电分段原则的特点对其进行比对,得出专用轨只有在与折返小交路电分段对齐设置分段时对运营维护将更有利的结论;再次,针对存在多条线大架修共享同一车辆基地,不同回流方式线路间存在跨线运行的情况,简述回流方式转换段设置的工程应用案例;最后,展望未来专用轨回流技术在城市轨道交通牵引供电系统的发展方向。In recent years,against the backdrop of urban rail transit systems utilizing a direct current power supply,a dedicated rail return current technology has been implemented to comprehensively address the issue of stray current leakage.In order to thoroughly comprehend the changes and impacts that the dedicated rail return current method has brought to urban rail transit construction projects,this article first employs a comparative approach.It compares the train operating rail return current method and the dedicated rail return current method in several aspects,including power supply system composition,traction substation spacing,grounding methods,grounding protection,train maintenance and static adjustment,loading gauge,as well as vehicle and track design.Secondly,a comparison is drawn among the characteristics of various current principles for the segmentation of dedicated rail power sections.The analysis concludes that aligning the dedicated rail sections with the electric sectional alignment of the returning part route proves more conducive to operational maintenance.Furthermore,the article briefly outlines engineering application cases where multiple lines share a common vehicle base for major overhauls,and crossline operations involve different return current methods.Lastly,the article provides a forward-looking perspective on the future development of dedicated rail return current technology within the traction power supply system of urban rail transit.

关 键 词：城市轨道交通 杂散电流 专用轨 专用轨电分段 回流方式转换段 

分 类 号：U223.6[交通运输工程—道路与铁道工程]