Lightning-Induced Voltage Waveform on an Overhead Wire over Finitely Conducting Ground

Abstract

Lightning-induced voltage waveforms at the end of an overhead wire over lossy ground are calculated with respect to the conductivity of the ground and lightning striking points. By numerical calculation, it is pointed out that the crest value of the lightning-induced voltage waveforms is greatly affected by the lightning striking points. It is confirmed that the disagreement of the polarity of the induced voltage at both ends does occur at an incident of a lightning stroke within about 3km. Accuracy of these results is evidenced by the experimental results.