Lightning Protection of Overhead Power Distribution Lines

摘要

There are 2 major protective methods against lightning outages on overhead distribution lines. One is surge arresters, and the other is an overhead ground wire. The surge arresters have rather constant effect regardless of the kind of lightning outage causes. On the other hand, the effect of an overhead ground wire is quite different against 2 major causes, direct lightning hit and induced overvoltages. This paper shows how to design lightning protection for overhead power distribution lines taking these characteristics into account.