摘要
以成都地铁为例,基于钢轨绝缘节的老化和单向导通装置频繁导通问题,将车辆段及停车场等效为小电阻接地支路进行仿真。仿真结果表明,小电阻接地支路可使正线钢轨电位最大提升27.2 V,威胁了正线的安全运营。据此提出一种应用于车辆段与停车场的新型钢轨回流装置,并介绍其控制方法。该新型钢轨回流装置具有辅助列车安全通过绝缘节遏制车辆段与停车场内杂散电流、评估钢轨绝缘节绝缘性能和测量出入段线钢轨过渡电阻的功能。
Taking Chengdu metro as the background and focusing on problems like the rail insulation joint aging and the frequent unidirectional conduction device troubles,the vehicle depot and train parking lot are equivalent to small resistance grounding branch for simulation.The result shows that the small resistance grounding branch could raise the maximum rail potential up to 27.2 V,directly threatening the main line safe operation.Therefore,the application of a new rail reflux apparatus between vehicle depot and train parking lot is proposed,the control method of which is introduced.This device could help train passing through the insulation joint safely,cut off the stray current between vehicle depot and train parking lot vehicle depot and train parking lot,evaluate the insulation performance of rail insulation joints and measure the rail transition resistance of the access lines as well.
作者
王沛沛
WANG Peipei(China Railway Siyuan Survey and Design Group Co.,Ltd.,430063,Wuhan,China)
出处
《城市轨道交通研究》
北大核心
2020年第5期192-195,199,共5页
Urban Mass Transit
关键词
城市轨道交通
杂散电流
钢轨绝缘节
钢轨电位
回流装置
urban rail transit
stray current
insulated rail joint
rail potential
unidirectional conduction device
