Lightning Protection against Winter Lightning

Abstract

Winter lightning, which occurs along the Sea of Japan coast, often damages transmission lines and distribution lines with the conventional lightning protection. These lines in mountainous areas suffer extensive damage from winter lightning. It is very important to investigate the features of lightning outages in detail to improve the lightning protection measures against winter lightning, therefore observations of lightning strokes to transmission lines and distribution lines as well as measurements of lightning surges on these lines have been carried out. And then the lightning performance of various protection methods has studied by experiments and analyses. Taking into account these studies, the effective methods have been adopted. This paper presents the lightning protection of transmission lines and distribution lines against winter lightning.