In order to address the difficulty of parameter setting of fast frequency support strategy for high proportion wind power grid connected power system and the complex problem of stall caused by excessive release of rotor kinetic energy of low wind speed unit caused by power equivalent distribution

an adaptive frequency support control strategy for wind farm under the mode of “centralized response + autonomous execution” is proposed. For this purpose

a wind farm frequency support architecture of “centralized response + autonomous execution” mode is proposed by using the hierarchical idea. The upper layer considers the dynamic compensation of the system disturbance

and builds the frequency support strategy based on the auto-disturbance rejection controller model. Aiming at the difficulty of auto-disturbance rejection parameter tuning

the influence of different linear auto-disturbance rejection control parameters on the fast frequency support effect and the operating state of the wind turbine is explored

and a linear auto-disturbance rejection controller parameter tuning method based on particle swarm optimization algorithm is proposed. In the lower layer

considering the phenomenon of speed stall

for the problem of primary frequency regulation power distribution of wind turbines with different wind speeds in the wind farm

a setting method of adaptive dynamic correction of active power response coefficient by rotor speed is proposed. After receiving the active incremental signal of the station

the unit combines the active power response coefficient to respond independently to the fast frequency support

and realizes the control mode of “wind farm centralized response + unit autonomous execution”. A four-machine two-area system with wind farm is simulated and analyzed. The simulation results verify the effectiveness of the proposed control strategy to suppress the stall of the wind turbine speed and the feasibility of the frequency support effect.