Investigation of Effect of Transmission Line Arresters Verified by Lightning Surges at Substations

摘要

In recent years, the transmission line arresters have been installed to protect an overhead power transmission line from a back flashover caused by lightning. It has been also expected that lightning surges in the substations incoming via transmission lines can be suppressed by them. However, the suppression effect by those with series gaps has not been investigated sufficiently. Author has measured lightning surges at two 77kV substations from 1990 to 1993.