Analysis the securable operation and protection coordination indices on multi?objective sitting and sizing of synchronous distributed generations on distribution networks

Despite improving various technical indices such as operation and voltage profile, the integration of synchronous distributed generations (SDGs) may lead to loss protection coordination in distribution network (DN). To tackle problem, this paper presents a multi-objective siting sizing SDGs on DN considering operation, economic simultaneously. The proposed scheme is structured framework four-objective optimization which aims minimize energy losses, worst security index (VSI), planning cost (PI) (the deviation time interval). Therefore, it constrained power flow equations, VSI, overcurrent relays (OCRs). Then, Pareto based method weighted functions summation obtains an integrated single-objective problem for scheme. Next, hybrid evolutionary algorithm formed by merging particle swarm (PSO) crow search (CSA) incorporated achieve optimal solution with unique response approximate conditions. Eventually, suggested applied portion IEEE 30-bus ring 69-bus radial numerical results confirm efficient performance SDG terms indicators protective devices coordination.