With the continuous improvement of global wind power penetration level

the inertia level of power system continues to decline

and due to the influence of wind speed fluctuation

the fluctuation of system frequency is further increased

which restricts the maximum penetration level of wind generation. Therefore

aiming at the influence of wind speed fluctuation on system frequency

a low-order system frequency response model considering wind speed fluctuation is established

and a wind turbine primary frequency regulation control method based on virtual filter is proposed. By adding an additional control loop to the load shedding power controller

on the basis of not affecting the original primary frequency regulation ability of the wind turbine

the influence of wind speed fluctuation on system frequency is suppressed

and the maximum penetration level of wind generation is improved. In addition

in order to measure the improvement effect

a calculation method of maximum penetration level of wind generation considering wind speed fluctuation and frequency constraints is proposed. Finally

the IEEE9 node time domain model with wind turbines is built on Matlab/Simulink

and different simulation scenarios are set to verify the accuracy of the proposed calculation method and the effectiveness of the proposed control method.