Aerodynamic-Efficiency-Constrained Short-Term Frequency Support Control of Wind Turbine Generators

Abstract Wind turbine generators (WTGs) can provide short-term frequency support at a frequency event via the stepwise inertial control (SIC) scheme. However, WTGs deviate from the maximum power point tracking (MPPT) operating point when SIC is implemented. A reasonable trade-off between the effectiveness of frequency support and the aerodynamic efficiency of WTGs should be reached in SIC parameters configurations. This paper proposes a modified SIC scheme where the SIC parameters are determined with consideration of wind energy capture losses. Simulation results validate that the proposed scheme improves the system frequency response without causing significant wind energy capture losses.