Protection Coordination of DOCRs for Different Modes of Microgrid Operation

Abstract The present study is focussed on solving the relay coordination problem. Protection of microgrids performed through placement directional overcurrent relays (DOCR). efficacy microgrid protection depends all DOCRs placed in system. For this purpose, a number optimization techniques have been employed by power system researcher. In paper, Grey Wolf Optimizer (GWO) proposed for different modes operation. method tested and validated 7-bus mesh 9-bus radial test has compared with other meta-heuristic approaches, namely Genetic Algorithm (GA), Artificial Bee Colony (ABC), Gravitational Search (GSA), Hybrid Particle Swarm Optimization (PSOGSA). Based obtained results, GWO-based approach very efficient mitigating problem as to techniques.