Role of Overhead Ground Wire in the Generation Mechanism of Lightning-Induced Voltage over Lossy Ground

摘要

The role of an overhead ground wire on the generation mechanism of the lightning-induced voltage on a multiconductor line, associated with a vertical return-stroke channel, is studied based on numerical calculation. The induced voltage is calculated by the method where the tangential component of the electric field to the wire is looked upon as inducing sources. The analyzed multiconductor line consists of three phase wires and an overhead ground wire having one or two earthing points.