COUPLING OF EXTERNAL ELECTROMAGNETIC-FIELDS TO UNDERGROUND MULTICONDUCTOR CABLE TRANSMISSION-SYSTEMS

In this paper, a general model for voltage and currents induced by the primary and secondary field couplings in a multiconductor cable syste m buried in lossy earth, and illuminated by an external electromagneti c field is presented. Generalized form of equivalent transmission line equations (ETLEs) obtained from this model are presented, which could analyze many of the associated problems, involving the field coupling s in underground transmission systems. These equations are then used t o derive general solutions for the currents and potentials induced by the external fields along the underground conductors.