Analysis of grounding electrode dynamic resistance using FEM

Abstract

This paper presents an analysis of transient behavior of grounding electrode under the soil ionization effect. The proposed numerical model offers the new approach to the transmission line modeling of a grounding system. The numerical model is based on the finite element method (FEM) applied to the transmission line equations in the time domain. The effect of the soil ionization on the dynamic resistance is modeled by the nonlinear transmission line equations. Besides the soil ionization effect it will be shown the effect of soil permitivity to the dynamic resistance. The obtained results have been compared to the available experimental results from the literature.

Ivica Jurić-Grgić

Full Professor | Department of Theoretical Electrical Engineering and Modelling

Researcher and full professor at the Faculty of Electrical Engineering, Mechanical Engineering, and Naval Architecture in Split. His research focuses on numerical modeling of electromagnetic transients in power systems, with particular emphasis on the development of advanced numerical methods for analyzing electromagnetic transients in multi-conductor transmission lines. His work includes the application of finite element techniques for transient stability analysis of power systems, as well as the enhancement of models for harmonic and transient analysis of grounding systems.

Rino Lucić

Full Professor

Dr. sc. Rino Lucić is a retired professor from the Faculty of Electrical Engineering, Mechanical Engineering, and Naval Architecture in Split. Throughout his career, he taught courses at all study levels and actively participated in the realization of numerous scientific-research projects. As an author or co-author, he has published 41 scientific papers and 16 professional articles, with research interests spanning numerical modeling, transmission lines, finite element method, and power system transient analysis.