Overcurrent Protection Coordination Models in Power Systems, Simulation and Optimization

In this paper, coordination simulations of directional and non-directional overcurrent relays, which are used to protect various equipment in power system, is practiced. PSO (Particle Swarm Optimization) and CSA (Crow Search Algorithm) are used to find the optimal relay settings. The relay settings, found with these algorithms, have been entered into the overcurrent relays in the virtual model of the power system. Then, fault currents scenarios are generated in the virtual model and fault responses of the relays are analyzed. Thus, the success of PSO and CSA algorithms in finding optimal relay settings in power systems has been tested