Overcurrent protection behavior before wind farm contribution

Increasing numbers of wind turbines are connected to electrical power systems. Wind turbines are based on technologies different from the synchronous generator, such as the squirrel cage induction generator and high or low speed generators that are grid coupled through a power electronic converter. When connected in small amounts, the impact of distributed generation on power system transient stability will be negligible, but, at the present time, dynamic analysis of power systems has a great significance and several wind turbine models has been developed, but very little attention has been given to development of wind generation models to support fault analyses by protection engineers. This paper analyzes the wind turbine models applied in protection engineering software, used to calculate and test the response and the coordination among protective devices. The study has been applied to the overcurrent protection.