摘要
文章针对35kV架空配电线路复合绝缘子防雷保护方法进行研究。设置35kV架空配电线路复合绝缘子并联间隙,计算各间隙在操作冲击下的防雷性能指标。根据具体的线路条件和土壤条件选择合适的方法降低杆塔接地电阻。在关键的复合绝缘子处安装避雷器,确保其对雷电过电压有足够的响应速度和吸收能力。实验结果表明,所设计的35kV架空配电线路复合绝缘子防雷保护方法,雷击跳闸次数最高为3,说明其防雷性能好,具有实用性。
In this paper,the lightning protection method of composite insulators for 35kV overhead distribution lines is studied.The shunt gap of composite insulators of 35kV overhead distribution line is set,and the lightning protection performance index of each gap under operation impact is calculated.According to the specific line conditions and soil conditions,choose the appropriate method to reduce the ground resistance of the tower.Install a lightning arrester at the key composite insulator to ensure that it has sufficient response speed and absorption capacity to lightning overvoltage.The experimental results show that the lightning protection method designed for 35kV overhead distribution line composite insulator has a maximum of 3 lightning trip times,which indicates that its lightning protection performance is good and practical.
作者
叶金龙
朱文槐
YE Jinlong;ZHU Wenhuai(State Grid Zhejiang Electric Power Co.,Ltd.,Lishui Liandu District Power Supply Company,Lishui 323000,China;Lishui Puming Electric Power Construction Engineering Co.,Ltd.,Lishui 323000,China)
关键词
架空配电线路
复合绝缘子
防雷保护
overhead distribution line
composite insulator
lightning protection
