Optimal adaptive coordination of overcurrent relays in power systems protection using a new hybrid metaheuristic algorithm

• DOI: 10.1049/rpg2.13041
• Publication Date: 2024-07-22T04:20:30Z
• Authors: Samira Sadeghi; Ali Hesami Naghsh...; Parham Moradi; Abed Bagheri
• Keywords: Overcurrent; Harmony search; Differential Evolution

Abstract Advent of distributed generation and progression towards an intelligent grid infrastructure within the domain contemporary electrical power systems have created dynamic load profiles. Accompanying these developments, protective relays are faced with evolving landscape variable fault current conditions, resulting in disparate operational timings throughout diurnal cycle. In light challenges, this paper delineates formulation simulation a novel adaptive protection strategy for overcurrent relays, meticulously tailored to accommodate fluctuations load. To construct robust framework mechanism, series hypothetical scenarios crafted activate briefest time interval feasible. Further innovating sphere, introduces new hybrid algorithm, deftly amalgamating strengths three preeminent metaheuristic models: Improved Harmony Search, Particle Swarm Optimization, Differential Evolution. Simulations analyses substantiate efficacy algorithm optimizing coordination among aiming uphold overarching imperatives grid. For IEEE 6‐bus system, mean value objective function during 24 h Monte Carlo is 292.6607 very close 272.0758 eight stochastic scenarios, which contributes validity approach practical settings. Also, 30‐bus results relay operation set hours lowest highest consumption 17.1297 14.8049 s, reveals increase speed relays.