轨道交通架空接触网防雷综合技术研究

On Comprehensive Lightning Protection of Rail Transit Overhead Catenary

在轨道交通中,牵引供电系统提供列车牵引动力,架空接触网作为牵引供电系统的重要组成部分,向动车组供电授流。轨道交通供电系统一般采用架空接触网授流制式,在轨道交通采用高架桥敷设形式时,接触网系统则成为区域内的相对高点,遭受雷害的几率增加。针对供电系统架空接触网防雷综合技术策略进行研究,分析架空接触网防雷综合技术需重点解决的关键问题,归纳提出了行之有效的技术对策。

Traction power supply system provides traction power for rail transit train, the overhead contact line is an important part in traction power supply system, granting power to EMU （electronic multipl unit） stream. Rail transit power supply system generally adopts overhead catenary grant stream standards, when the viaduct form is adopted for rail transit, the catenary system tends to become the relatively high area in a certain section, making it vulnerable to lightning damages. In this paper, the lightning prevention technology and policies of overhead catenary power supply system are comprehensively researched, key issues in the integrated technology of overhead catenary lightning prevention are analyzed, some technical counter measures are proposed.