Coordination of Over Current Relay of Wind and Solar Power Plants

Wind generation systems and solar energy systems are used widely due to increase in power demand. So the protection of the plants are also becoming more important. The most commodious and common protection apparatus are overcurrent relays responsible for protecting power systems from impending faults. In order to employ a prosperous and proper protection of wind and solar power plants, these relays must be set precisely and well-coordinated with each other to clear the faults at the system in the shortest possible time. This paper explains the coordination of overcurrent relays to effectively attain the protection of wind and solar power plants to protect them during fault incidence. Matlab/Simulink is applied to model a wind farm and solar module and to achieve precise setting for coordination of overcurrent relays.