Research on a Grid-Forming Frequency Regulation Control Strategy with Adaptive Damping and Inertia Based on Linear Active Disturbance Rejection Control (LADRC)

To address the insufficient frequency support capability of power systems with high wind power penetration and the degraded control performance of wind–storage hybrid systems caused by parameter coupling during frequency regulation, a damping- and inertia-adaptive grid-forming (GFM) energy-storage frequency regulation strategy based on linear active disturbance rejection control (LADRC) is proposed. First, on the basis of fast angular-frequency control using LADRC, damping and inertia adaptive loops are introduced to eliminate parameter coupling and enhance the system’s frequency support capability. Meanwhile, considering the parameter characteristics of the GFM energy-storage frequency regulation strategy, a small-signal model from angular frequency and reference power to output power is established, and the transfer functions of the control loops are derived to achieve optimization of the system’s frequency regulation performance. Finally, MATLAB simulations are conducted to compare the system responses of different control methods under identical operating conditions and wind-turbine output variations. The results demonstrate that the proposed control strategy can significantly enhance the frequency support capability of the wind–storage hybrid system under complex operating conditions.