铁路10kV电力贯通电缆常见故障及预防措施

Common Faults and Preventive Measures in 10 KV Power Cable of Railway

铁路供电系统主要由接触网、牵引供电和电力配电三个系统组成,其中接触网系统和牵引供电系统是为了保证电气化铁路的电力机车(或动车组)的正常运行而提供电能,而电力配电系统主要是为了保证调度指挥、通信信号、旅客服务等非电力机车供电运行的其它业务提供可靠的电能保证。电力配电系统是确保铁路安全运行、系统稳定、高效运营的重要部分,它的可靠运行直接关系到铁路的行车安全,所以为了保证其可靠稳定供电,现在都设计为两条贯通线路(一级贯通和综合贯通),形成主备互供关系。本文将对京沪高铁北京区段的电力配电的故障进行综合分析,对故障率较高的电缆故障进行深度剖析,制定相应的对策以减少其故障率。

the railway power supply system is mainly composed of the line, traction power supply and power distribution system. The line system and traction power supply system is to provide power to ensure the normal operation of the electric locomotive electric railway（or EMU）. The power distribution system is mainly to guarantee the supply of power to ensure the other business dispatching and communication signal, passenger services, which operates with the non-electric locomotive power supply. The power distribution system is an important part of ensuring the safe operation, stable operation and efficient operation of the railway. Its reliable operation is directly related to the railway traffic safety. Therefore, in order to ensure its reliable and stable power supply, it is now designed to be two running-through lines（first level running-through and integrated running-through） to form the main preparation of mutual supply relationship. This paper will make a comprehensive analysis of the power distribution fault in the Beijing section of Beijing-Shanghai high-speed railway, and analyze the cable faults with high failure rate, and establish the corresponding countermeasures to reduce the failure rate.