山区输电线路由于地质、气候等因素的影响，雷击跳闸是线路故障的主要原因，严重影响了电网的稳定性及供电的可靠性。统计了近年来重庆长寿山区35 kV及以上输电线路的雷击跳闸故障，介绍了雷害事故的处理流程，根据理论和现场经验，对线路雷击跳闸进行了分析。在总结防雷整治的过程中进行了探索研究，发展了一些新的防雷观点和思路，并在长寿电网的防雷整治中进行了推广和应用，为做好山区输电线路防雷决策提供参考依据。

Because of the geology, the climate and other reasons, the lightning accident occupies a large proportion of the transmission lines trip-out in mountainous area, which seriously influences the stability of the power grid and the power supply reliability. This article investigated the statistical data of lightning trip fault for 35 kV and higher transmission lines in Chongqing Changshou mountainous area in recent years, introduced the treatment scheme of lightning accident, judged the pattern of lightning accident based on the theory and site experience, and briefly analyzed the lightning trip fault. The process of lightning protection regulation was researched to propose some new ideas for lightning protection, which was popularly used in Changshou power grid. The results can provide references for transmission lines lightning protection in lightning area and mountainous area.