How the electrical properties of soil affect the surge performance of buried long systems

The proposed analysis deals with the study of the surge behaviour of buried long conductors, by taking into account the true frequency-dependent electrical properties of soil as a discharge medium of a transient current. As regards the water content, the worst case of soil practically devoid of moisture and, conversely, the case of water-saturated soil are both considered. Finally, when the conductor under investigation is a cable sheath, the propagation function and the induced noise inside the shielded cable are evaluated