Electromagnetic Transients and Frequency Characteristics of a Loaded Horizontal Conductor above Lossy Earth

Abstract

This paper addresses the electromagnetic transients and the frequency characteristics of a thin conductor horizontally suspended above lossy earth. The analysis takes into consideration the receiving-end termination and the earth parameters. The effect of the ground return is represented by incorporating the concept of the complex penetration depth in the formulation of the line’s equations in the s-domain. The resulting simultaneous differential equations governing the voltage and current are solved analytically by means of a Mathematica program in order to get closed-form s-domain expressions for their distributions along the conductor. The application of numerical Laplace inversion will then yield the corresponding distributions in the time domain. Results of several case studies are presented and discussed. The suggested procedure is validated through comparing the simulation results with experimental measurements available elsewhere.

Keywords: Transmission lines, Laplace transform, electromagnetic transient analysis, earth, frequency characteristics, resonance, numerical analysis

Cite this Article

Mohamed M. Saied. Electromagnetic Transients and Frequency Characteristics of a loaded Horizontal Conductor above Lossy Earth. Journal of Power Electronics & Power Systems. 2018; 8(1): 29–41p.