Influence of Return-Stroke Velocity on Distribution of Lightning-Induced Voltage along Overhead Line Dependent on Ground Conductivity
Year: 1996
Type: article
Abstract: The lightning-induced voltage has been an important factor for the insulation design of power distribution lines. Recently, the effect of the ground conductivity on the induced voltage has drawn attention. In this paper, the distribution of the lightning-induced voltage on an overhead wire, 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. It turns out that the distribution of the induced voltage along the overhead wire is greatly influenced by the ground conductivity and/or the velocity of the return-stroke current. The validity of the calculated result is verified by comparing the experimental result obtained outdoors by using a 1/20 scale model.
Authors: Yasuji Hongo, Koji Michishita, Masaru Ishii
Language: English
Subfield: Astronomy and Astrophysics
Field: Physics and Astronomy
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W2511700915