The DFIG Wind Farms and VSC-HVDC Sending End Station Coordinated Control Research

With the rapid development of wind power, how to connect wind farms and grid becomes a crucial question. This paper studies the connecting method and control strategy of the wind farm based on doubly-fed induction motor (DFIG). Numerical simulations have carried on to analysis the scheme by using Matlab/Simulink. Simulation results show that through the wind farm side converter reactive power control, making the system better to suppress voltage fluctuations of the DFIG AC bus, to control the active power and frequency of the voltage source converter (VSC) send end station converter, and making the active power transmitted efficiently. By maintaining constant stator frequency ratio to achieve maximum DFIG wind energy capture and can improve the performance to ensure stable and efficient operation of the system.