Modeling and analysis of the stability for the power system considering the integration of the wind farms

Because of the randomicity and intermittence, the integration of large-scale wind farm brings serious influence to the stability of power system. The model of the wind power system is analyzed in this paper which includes wind turbine, shaft system and wind generator. With the User Program Interface (UPI) of PSASP and Visual C++, the user programs of load flow and transient stability calculation are built. Based on the above model, user program and actual wind farm of Fangcheng Henan province, the relation of the reactive power and the rotor speed-slip is studied. The impactive current of the wind farm penetrating into the power network is calculated. The steady-state and transient-state influence of wind farm on power system are analyzed deeply. The outcome of the simulation proves the validity and practicality of the model.