动车组高压接地故障分析与处置

Analysis and Handling of HV Earthing Fault of EMUs

动车组高压接地故障严重影响动车组正常运行和高铁运输秩序,处置不当将导致故障影响扩大、区间停车延时,严重时会造成接触网断线、中断行车。如何正确、高效处置动车组高压接地故障是铁路部门面临的问题。介绍动车组高压接地故障典型现象和常见故障原因,分析高压接地故障检测原理及当前高压接地检测和保护逻辑存在的问题,总结出典型高压接地故障应急处置方法及关键项点,为及时发现和高效处置动车组高压接地故障、降低对高铁运输秩序的影响提供参考借鉴。

The HV earthing fault of EMUs would seriously jeopardize the normal operation of EMUs and the HSR transport order. Improper handling will result in the expansion of the fault incidence, e. g., the train delay for stopping in a section, and in serious circumstances, the OCS will be broken and the traffic will be interrupted. How to correctly and efficiently handle the HV earthing fault of EMUs is a challenge faced by the railway sector. This paper introduces the typical phenomena and common causes of HV earthing faults of EMUs, analyzes the detection principle of HV earthing faults and the problems existing in the current HV earthing detection and protection logic, summarizes the emergency response methods and key points of typical HV earthing faults, and provides reference for timely detection and efficient handling of HV earthing faults of EMUs and reduction of the impact on HSR transport order.