A Secondary Frequency Control Based on MPC Considering Distributed Energy Storage

The integration of extensive new energy has changed the original network structure and reduce the stability of the power grid, and especially puts forward higher requirement for the frequency response ability of the power grid. Therefore, based on model predictive control (MPC), this paper proposes a grid load frequency control (LFC) method with the participation of distributed battery energy storage system (BESS). Firstly, the principle of BESS participation in the secondary frequency regulation is analyzed, and on this basis, the dynamic frequency response model of the power grid with the participation of BESS is established. Finally, based on the different frequency regulation characteristics of traditional generator and BESS, the distributed coordinated optimal control of multiple frequency control sources is realized by MPC. The simulation results show that the proposed model prediction controller can quickly eliminate the frequency deviation and realize the coordinated operation of distributed BESSs and traditional generator in the grid frequency regulation.