Incorporation of soil ionization and mutual coupling in transient study of horizontal grounding electrode using TLM

This investigation is devoted to study the transient behavior of long horizontal grounding conductor submitted to high impulse current using Transmission Line Method (TLM) incorporating soil ionization and/or mutual coupling phenomena. As results, soil ionization generates a very slight decrease in potential values. This diminution is accentuated when considering mutual coupling phenomenon. A good accordance has been obtained when comparing our results to those reported by some researchers in the field.