An optimal coordination of directional overcurrent relays using a Gorilla troops optimizer

Abstract

The optimization of coordination of directional overcurrent relays in an interconnected power system is given in this work. The goal of protective relay coordination is to achieve selectivity while maintaining sensitivity and a fast fault clearing time. The coordination research revolves around calculating the relays’ time dial setting (TDS) and plug setting (PS). DOCR coordination is a difficult and fascinating problem in nonlinear optimization. To avoid too much breakdown and interference, the overall working duration of all necessary relays must be kept to a minimum. To solve the coordination issue at the DOCR, coordination is carried out using the Gorilla troops optimizer (GTO). IEEE 3-bus and 8-bus test systems are among the test systems to which the suggested method has been implemented. The Results collected demonstrate the suggested GTO efficiency in reducing the relay operation time for the DOCRs’ optimum cooperation.