A new fault location method for underground cables in distribution systems

Abstract

This paper proposes an accurate fault location method for underground power cable in power distribution systems. The cable is modelled using PSCAD EMTP simulation tool. The cable core as well as sheath and various grounding modes were considered in the cable modelling. The algorithm uses voltage and current measurements recorded at the terminal where the fault locator is placed. The simulation studies have proved that the proposed algorithm gives very accurate outputs even under various grounding modes and fault conditions.