Verifications on the Installed Number of Surge Arresters for 66-500kV Power Systems in Japan

Abstract

Surge arresters have contributed to supply of electric power by suppressing lightning surge on transmission lines in case of lightning phenomena. Surge arresters using zinc oxide (ZnO) elements are suitable for insulation coordination, and are enable to reduce LIWV (Lightning Impulse Withstand Voltage) and construction cost of power systems. This paper describes applications and results of surge arresters to verify effectiveness of surge protection for 66-500kV power systems in Japan.