Abstract: Aiming at the uncertainty of wind turbine output and the inability to provide inertial support for the power system,this paper proposes a coordinated control method of wind-storage power system based on virtual synchronous generator（VSG）to respond to frequency variation and suppress power fluctuation. Firstly,a VSG control strategy is adopted for the grid-side converter of wind-storage power system to ensure that wind turbines have the ability to participate in regulating the frequency variation of the power system. On this basis,the control strategy of DC bus voltage outer loop and current inner loop for flywheel generator-side converter in gridconnected operation stage is proposed,and the controller parameters are designed using the zero-pole cancellation method. Finally,the simulation results verifies the effectiveness of the proposed control method.