Outage rates of power distribution lines due to summer and winter lightning in chugoku region

Abstract

Taking the densities of lightning strokes and electric poles into account, we calculated outage rates of each equipment on a 6.6 kV distribution line due to summer (Mar.-Oct.) and winter (Nov.-Feb.) lightning for 6 years in the Chugoku region located in the western part of Japan. Furthermore, using these results, we proposed some application maps for the lightning risk assessment of power distribution lines in this region considering the effect of seasonal lightning hazard. © 2009 The Institute of Electrical Engineers of Japan.