重庆某10kV线路防雷问题分析及改造措施研究

重庆10kV回沙线在雷电活动频繁地区，雷害故障情况较为严重。通过对整条线路易受雷击点和配电变压器防雷保护进行现场调研，从地形对雷电的影响、杆塔高度过高使雷击闪络次数增加和配电变压器防雷存在的问题等方面分析了雷害事故多发的原因，并在此基础上提出了架设耦合地线、加装保护间隙、完善配电变压器保护等防雷措施，达到提高线路耐雷水平，确保配电线路供电可靠。

Lightning Protection Analysis and Reform Measures on a Chongqing 10 kV Line

Chongqing Huisha 10kV line is in the region where lightning is frequent, the damage from lightning is serious. Through on-site investigation on the vulnerable points to lightning on the line and the lightning protection of distribution transformers, analyzing the causes of frequent lightning as impact of topography, overhigh pole height to increase lightning flashovers and existing defect of distribution transformer lightning protection, accordingly proposed erecting coupling ground wire, installing protection gap, improving distribution transformer lightning protection measures, thus improving the lightning-resistant level of the line, which ensures the reliability of the power distribution.