The Lightning Protection Countermeasure And Effect Of Distribution Line In Fushun Area

In this paper, it introduces the existing lightning protection method of distribution line for the domestic and foreign, and shows that emphasis of distribution line lightning protection is inductive lightning protection. It analyses distribution line damaging of lightning overvoltage and generating mechanism in detail. It shows that when insulation inner complex of distribution equipment and aerial insulation line encounters thunder with disconnection, they are caused by power-flow current. This paper states some main ideas and methods of Fushun power company about the existing lightning protection method of distribution line. It introduces integrated using of lightning location system and arrester discharge counter, and this method can accurately judge lightning protection situation of distribution line. It introduces the performance and advantages of zinc oxide arrester, also introduces difference and using method of polymer metal oxide arresters with series gaps and gapless arrester. This paper takes Langshi line for example, and states how to evaluate lightning protection based on external conditions of lines corridor, and specifically gives the installation number, location and selected model of Langshi line lightning arrester. It proves adoptive lightning protection method accurately and scientifically through Langshi line operation. The paper states this lightning protection method of distribution line is the leading technology for domestic, and it is guiding significance for lightning protection of distribution line.