The Performance of Lightning Rod Arrester and Its Effect on the Top Potential of Tower for 500 kV Transmission System  

作　　者：Jian’gang Gong Zhouyou Lin Yangyong Xu Shen Zhao Qiang Zhang 

机构地区：[1]State Grid Zhejiang Electric Power Company, Hangzhou, China [2]Wenzhou Power Supply Company of State Grid Zhejiang Electric Power Company, Wenzhou, China [3]Chengdu Xinghe Technology Industry Corporation, LTD, Chengdu, China

出　　处：《Journal of Power and Energy Engineering》2014年第11期19-23,共5页电力能源（英文）

摘　　要：When the tower overhead is struck by the lightning impulse, the lightning current flows into the earth through the impedance of tower and the grounding resistance, which heightens potential of the tower overhead and possibly induces insulator flashover. Lighting rod arrester is used to shield the tower and provide another routine for lightning current, decreasing the potential of tower overhead. In this paper, the performance of a 500 kV lighting rod arrester is tested used in AC transmission system under the current impulse. Besides, the influence of the lightning rod arrester performance on the top potential of tower is also studied. The results show that, when the rod arrester is connected to the tower, the top potential of tower can be obviously limited under the lightning strike.When the tower overhead is struck by the lightning impulse, the lightning current flows into the earth through the impedance of tower and the grounding resistance, which heightens potential of the tower overhead and possibly induces insulator flashover. Lighting rod arrester is used to shield the tower and provide another routine for lightning current, decreasing the potential of tower overhead. In this paper, the performance of a 500 kV lighting rod arrester is tested used in AC transmission system under the current impulse. Besides, the influence of the lightning rod arrester performance on the top potential of tower is also studied. The results show that, when the rod arrester is connected to the tower, the top potential of tower can be obviously limited under the lightning strike.

关 键 词：LIGHTNING Impulse Grounding Resistance LIGHTNING Rod Top POTENTIAL of TOWER Insulator FLASHOVER LIGHTNING Protection 

分 类 号：R73[医药卫生—肿瘤]