ALTERNATIVE SOLUTION FOR THE CHOWDHURI-GROSS MODEL OF LIGHTNING-INDUCED VOLTAGES ON POWER LINES.

Abstract

According to a previous study, the induced voltage due to any current shape in the lightning channel can be obtained through the application of the Duhamel integral to the induced voltage due to a step current in the lightning channel. The paper presents an alternative expression for the Chowdhuri-Gross model, using a method different from that previously employed. This expression gives the induced voltage directly in terms of the inducing voltage due to a step current. The simplicity of the expression is evident when calculating the induced voltage due to a ramp current. The expression for this induced voltage is used to obtain induced voltage pulse shapes due to a current with a linearly-rising front.