Combined Inertia and De-loading Frequency Response Control by Variable Speed Wind Turbines

The increasing penetration of wind power impacts the frequency stability of power systems .The participation of wind generation in primary frequency control has become a serious concern under study .Due to the lack of contribution of these turbines in grid frequency regulation, control schemes are necessary for wind turbines and power systems to support the frequency control. Wind turbine control methods that enable frequency support and control are presented. The advantages and disadvantages of each method are discussed. This paper presents a novel frequency regulation by DFIG-based wind turbines to combined inertial control, rotor speed control and pitch angle control, under three wind speed mode (low, medium and high). Detailed models are built in MATLAB/SIMULINK and simulation results are compared. Simulation results show that this strategy improves the frequency response after a frequency drop

Keywords:

Frequency response , variable speed wind turbine , frequency control , doubly fed induction generator