交流牵引市域(郊)铁路车载信号设备电磁干扰防护研究

Research on Electromagnetic Interference Protection for On-Board Signal Equipment of Urban Railway

交流牵引的电磁环境极其复杂、运行条件非常严酷,由电磁干扰导致的车载信号故障频出,引发行车安全隐患。文章针对交流牵引列车的车载信号设备面临的电磁干扰问题进行了深入研究,建立了车载信号设备信号定位原理和电磁干扰源模型。通过分析电磁干扰导致车载信号失败的结果,并以某线交流牵引列车实际运行情况为例,从车载信号定位原理角度探讨了电磁干扰防护特性。最终,提出了一套切实可行的解决方案,旨在解决危害信号系统安全稳定运行的技术难题。

The electromagnetic environment of AC traction is extremely complex and the operating conditions are very harsh.The frequent on-board signal failures caused by clectromagnetic interference pose potential safety hazards for the train.The paper conducts an study on the problem of electromagnetic interference faced by onboard signaling equipment for AC traction trains,establishing principles of signal location for such cquipment as well as a model of clectromagnetic interference sources.By analyzing the results of signal failures caused by electromagnetic interference in an AC traction system,we explore thc charactcristics of electromagnetic interference protection from the perspective of onboard signal location principles.Ultimately,the paper propose a practical solution aimed at resolving technical difficulties that threaten the safe and stable operation of the signaling system.