New concept in fault location for overhead distribution systems using superimposed components

Due to the challenges facing many electric utilities worldwide as a result of deregulation, the demand and importance of accurate fault location in distribution systems has increased, principally to minimise line outages through effecting repairs expeditiously. The paper presents a novel approach to single-ended fault location for overhead distribution systems based on the concept of superimposed voltages and currents. It is clearly shown that the technique, which is interactive in nature, is highly robust to changes in local and remote source capacities and to the presence of load taps