From the data collected by lightning location system , we can find that chongqing is strong - lightning - day and has about 95 lightning days per year and has 7 . 022 hours per lighting day . in addition to the ground flashing density is 0 . 1216 / km2 ? d and beyond the value of rules . so according as the fact of chongqing power system ， the paper will investigates the 110kv power transmission line because lightning often stroked the line last years 重庆雷电定位系统运行两年多来采集到的数据分析研究结果表明重庆应属于强雷区，年雷电日数在95左右，平均每个雷电日中有7 . 022雷电小时，而地面落雷密度平均值为0 . 1216次/ km2 ? d ，比规程规定值高出一个数量级。
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From the data collected by lightning location system , we can find that chongqing is strong - lightning - day and has about 95 lightning days per year and has 7 . 022 hours per lighting day . in addition to the ground flashing density is 0 . 1216 / km2 ? d and beyond the value of rules . so according as the fact of chongqing power system ， the paper will investigates the 110kv power transmission line because lightning often stroked the line last years 重庆雷电定位系统运行两年多来采集到的数据进行分析研究结果表明重庆应属于强雷区，年雷电日数在95左右，平均每个雷电日中有7 . 022雷电小时，而地面落雷密度平均值为0 . 1216次/ km2 ? d ，比规程规定值高出一个数量级。
