Abstract
The increasing penetration of wind generation in power grid introduces challenges for the system operation and stability, highlighting the importance of the frequency support from wind turbines (WTs). In this context, this paper proposes a novel control framework for the frequency support from WTs in power systems. The recovery effect of WTs associated with the frequency support delivering is explicitly included in the system frequency dynamics such that the secondary frequency dip can be eliminated. Various control schemes (constant power, inertia response and droop response) are analyzed and compared in terms of the effectiveness to replace primary frequency response(PFR) while maintaining the system frequency nadir above the limit. The proposed control design is verified through Matlab/Simulink simulations. A significant reduction of PFR requirement is observed especially in a system with high penetration of wind generation.
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