轨道电路红光带故障原因分析及处理措施

Cause Analysis an Treatment Measures of Track Circuit Red Band Fault

在介绍轨道电路组成结构和工作原理的基础上,分析了轨道电路空闲时红光带的产生原因。结合上海轨道交通2号线铁屑造成绝缘节短路而引起红光带故障频发的案例,通过现场调研、材料对比分析、列车进出站牵引计算等手段,找出了铁屑的来源,分析了铁屑的形成机理,给出了相应的解决对策。

With an introduction to the structure and working principle of metro track circuit,the causes of red band in track circuit idle time are analyzed. Combined with a case study of frequent red light belt failure,when the short circuit on insulation section of Shanghai metro Line 2 was caused by iron chips,the source of iron chips is finally detected through field investigation,comparative analysis of materials,traction calculation of vehicle entrance and exit at station,and so on. The forming mechanism of iron chips is analyzed and corresponding treatment measures are provided.