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地铁高架区段的线路由于暴露在外面,易于遭受雷击,因此有必要研究地铁高架区段的耐雷性能。建立地铁高架接触网耐雷水平模型,得到了雷击架空地线和雷击接触网的耐雷水平,讨论接地方式、避雷器架设方式对耐雷水平的影响。研究结果表明:接地点和安装避雷器支柱的耐雷水平较高,雷击架空地线耐雷水平高于雷击接触网的耐雷水平,间隔架设避雷器并接地对接触网和架空地线耐雷水平提高效果较好。
Subway elevated section of the line due to exposure to the outside, prone to lightning strikes, it is necessary to study the elevated section of the subway lightning performance. The level model of mine overhead contact net is established, the lightning protection level of overhead ground wire and lightning contact net is obtained, and the influence of grounding mode and arrester erection mode on the mine-resistant level is discussed. The results show that the level of lightning protection at the grounding point and the arrester with lightning arrester is higher, the lightning protection level of overhead ground wire is higher than the lightning resistance level of the lightning contact net, and the arresters are arranged at intervals and the lightning resistance of the overhead ground wire is better.