OPTIMAL COORDINATION OF DIRECTIONAL OVERCURRENT RELAY USING MOTH FLAME OPTIMIZATION ALGORITHM

Abstract

Abstract- Over current relays are commonly used in distribution system whose function is not only to provide primary protection but also secure and accurate back up protection also. The overcurrent relays must be optimally coordinate among them to reduce the total operating time so that fault clearing time will be increased. In this paper, a Moth Flame optimization technique is proposed in order to minimize the total operating time of the overcurrent relays. The proposed method is tested on the data obtained from two widely adopted distribution system. Comparison assessment with other techniques shows the efficiency, accuracy, and speed of the proposed algorithm. Keywords- Overcurrent relay coordination, Optimization, Moth-Flame algorithm, Transverse orientation