Experiment on Lightning-Induced Voltage on Distribution Line by Inclined Return-Stroke Channel Influenced by Ground Conductivity

Abstract

The effect of the ground conductivity on lightning-induced voltage waveforms on an overhead wire influenced by inclined return-stroke channels is studied based on an outdoor experiment with a reduced-scale model. It turns out that the ground conductivity affects the induced voltage waveforms associated with inclined return-stroke channels, and the effect is dependent on the three-dimensional configuration of the channel relative to the line.
Moreover, experiments verified induced voltage waveforms calculated by solving the Telegraphers' equations in combination with the numerical calculation of electric fields.