Nowadays, renewable energy sources are more reliable and developed than before in which wind power is a considerable factor. Therefore, total worldwide installed wind power capacity is increasing day by day. A thorough comprehensive knowledge about modeling, control and responses of wind generators to practical disturbances is very necessary and vital. The double fed induction generator (DFIG) is popular and effective for a wind turbine with the noticeable characteristics of variable pitch control and rotor-side converter including. Typically, the thesis tries to describe and explain the DFIG wind turbine control model built in PSS/E before the model is applied to a bulk power system - the reduced equivalent power system in Soc Trang, Vietnam. It wants to observe, analyze and evaluate dynamic responses to different disturbances such as short circuit, and loss of a generator. During the simulation, due to using an uninterrupted operation and fast control of DFIG converter, the DFIG wind turbines response successfully to each disturbance. It wants to understand that under transient fault conditions, both the voltage and the system frequency are important to the assessment of influences of wind power on the overall power system. Specifically, while terminal voltages are always maintained by controlling the reactive power, the mismatch between the mechanical and electrical power makes the system frequency change. Besides, the capability of controlling the pitch angle of DFIG wind turbines to obtain the expected power output is worthy.

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