Research on Smooth Wind Power Control Strategy for Hybrid Energy Storage Based on MPC

In order to better stabilize the high-frequency component of wind power, lithium battery supercapacitor hybrid energy storage is often used. The traditional hybrid energy storage strategy of smoothing out the fluctuation of wind power often considers the subsequent response ability of energy storage, so as to correct the energy storage power, which will cause the gridconnected power of wind power to deviate from the target value, which may lead to the decline of the grid-connected smoothness of wind power in severe cases. In order to solve this problem, this paper proposes a hybrid energy storage smooth wind power control strategy based on MPC. Firstly, the system structure of the combined wind storage system was established, and the gridconnected power and the total power of the hybrid energy storage system were obtained through model predictive control (MPC). Secondly, the hybrid energy storage combined power was allocated at one time by variational mode decomposition (VMD). Secondly, fuzzy control is used to adjust the energy storage SOC, and the secondary power allocation of the hybrid energy storage system is carried out. Finally, a numerical example is carried out to verify the effectiveness of the proposed method.