Caractérisation numérique d’une prise de terre à géométrie complexe

Abstract

In this work a new approach for detection and localization of fault on buried conductor is developed. This study is based on the analysis of electromagnetic field with and without fault. The theoretical expressions in time domain of electromagnetic field radiated by electric dipole in infinite conductive medium are used, in the half space the interface soil-air is taken into account using modified method of images. The computation results are based on a general formulation, in time domain, which permits the observation points in air or soil. The study revealed that both electric and magnetic fields can be used to detect opening in current-carrying conductors.