铁路客运专线接触网防雷研究

Research on the Lightning Protection of OCS in Passenger Dedicated Lines

研究目的:我国客运专线建设速度加快,所经地区地理、气象、气候条件差别较大,情况复杂,如果接触网不设避雷线,易遭受雷击引起损坏。为保证接触网运行的高可靠性,在分析德国、日本接触网防雷措施的基础上,结合我国电气化铁道现状,提出广深线接触网系统防雷的改建建议。通过分析和理论计算,对客运专线接触网系统防雷进行研究。研究结论:针对电气化铁道中部分线路遭受雷击较频繁的现状,对广深线接触网遭受雷击跳闸进行了统计分析,建议广深线全线架设架空地线,架空地线采用柱顶方式安装。在强雷区应设置避雷线,对客运专线应切实做好避雷器和避雷线的接地,保障避雷设施正常运行。

Research purposes： The construction of the passenger dedicated lines （PDL） is speeding up in China. There are various geographical environments, different whether and climatic conditions in the areas where the PDL goes over. Because of the complicated situations, the overhead contact line system （OCS） is apt to be damaged by the thunders if the lightning conductor being absent. In order to guarantee high reliability of the OCS operation, the study on the lightning protection in the PDL was carried out through theoretical calculation and practical analysis. Based on the analysis of the measures for lightning protection in Germany and Japan, taking the practical situation in China electric railways into consideration, some suggestions were proposed for the lightning protection of OCS system in Guangzhou to Shenzhen railways. Research conclusions ：Whereas the accident of lightning strike occurs frequently in electrical railway in China, after the statistical analysis of the switch - off occurrence due to the lightning, the conclusion was drawn that the earthing lines shall be installed along the Guangzhou to Shenzhen railway and arranged on the top of the poles. In the strong lightning areas, the arrester is necessary to be fixed. In order to guarantee the lightning facility running safely, the grounding of the lightning conductors and the arrester is suggested in the DPL lines.