Lightning Performance of Grounding of Overhead Power Distribution Lines

Abstract

This article reviews the effect of grounding resistance upon lightning performance of overhead power distribution lines (OPDLs). Good performance of lightning protection can be got by lower grounding resistance of OPDLs with surge arresters only. On the other hand the value of grounding resistance is not important for lightning protection for OPDLs with surge arresters and an overhead ground wire. Flashover in insulators does not occur by grounding potential rise but overvoltages in an insulator itself.