Transient Response of a System Consisting of Conductive Thin Wire Structures Excited by Harmonic and Lightning type Signals

Abstract

The transient response of a system of independent electrodes buried in a semi infinite conducting medium is studied. Using a simple and versatile numerical scheme written by the authors and based on the Electric Field Integral Equation (EFIE), the effect caused by harmonic signals ranging on frequency from Hz to hundreds of MHz, and also by lightning
type driving signal striking at a remote point far from the conductors, is extensively studied. The value of the scalar potential appearing on the electrodes as a function of the frequency of the applied signal is one of the variables investigated. Other features such as the input impedance at the injection point of the signal and the ground potential rise (GPR) over the electrode system are also discussed.

Keywords: electric field integral equation, lightning pulses, method of moments thin wire structures, transferred potentials, transient response