NEW CONCEPT IN FAULT LOCATION FOR OVERHEAD DISTRIBUTION-SYSTEMS USINGSUPERIMPOSED COMPONENTS

Due to the challenges facing many utilities worldwide as a result of d eregulation, the demand and importance of accurate fault location in d istribution Systems has increased, principally to minimise line outage s through effecting repairs expeditiously. The paper presents a novel approach in single-ended fault location for overhead distribution syst ems based on the concept of superimposed voltages and currents. It is clearly shown that the technique, which is interactive in nature, is h ighly robust to changes in local and remote source capacities and to t he presence of load taps.