牵引电流对电力电缆影响的分析与对策

Analysis and Countermeasures of Influence of Traction Current for Power Cable

随着电气化铁路的开通和运营速度的不断提高,牵引供电系统形成的巨大电磁场以及回流系统的泄漏电流,对附近平行架设和埋设的电力、信号、通信电缆的影响越发突出。由于大地回流的影响,平行接触网敷设的电力电缆烧损故障的发生率明显增多。针对平行接触网敷设的电缆烧损故障情况,通过设备管理单位对故障电缆处理方法的调研,本文研究和阐述了牵引供电系统中大地回流对平行埋设电力电缆产生影响的原因和解决方法,对电气化铁路的正常运行有着现实的意义。

With the opening of electric railway and the continuous improvement of overall trip speed, the huge electromagnetic field formed from the traction power system and the leakage current of reverse-flow system affect more and more outstandingly on the cable erected parallelly nearby and inbuilted electricity signal communication. Because of the influence of the earth return, the incidence of the electric power cables laid by parallel contact line burning failure increases obviously. Aiming at the case of the cables laid by parallel contact line burning failure, through the investigation of the process equipment management dealing with the faulty cable, the paper studies and explains the cause of the earth return having an effect on parallelly laying the electric power cables in the traction power supply system and the solution. It has the practical significance for the normal operation of the electrified railway.