ABSTRACT The current system frequency response (SFR) model that incorporates the wind farm fails to fully account for the operational variations of wind turbine generators (WTGs) across varying wind speeds and different frequency regulation control modes, indicating potential for improvement. To address this issue, this paper first considers the virtual inertia, droop, overspeed de‐loading and pitch angle de‐loading control of the WTG to establish a frequency response model of the WTG. Second, based on the different operating states of WTGs, the equivalent frequency response model of the wind farm is aggregated through unit grouping, and an extended SFR model is constructed by further integrating it with the traditional SFR model. Then, a detailed simulation model of the wind farm is established on the DIgSILENT PowerFactory simulation platform to validate the proposed extended SFR model. The results show that the proposed model can accurately track the frequency response characteristics of the detailed model. Finally, using the proposed SFR model, an analysis is conducted on the impact of the wind farm's frequency regulation parameters and wind speed scenarios on system frequency stability.
Hu et al. (Thu,) studied this question.