Optimal Operation Planning for a Coordinated Control Method in a Hybrid System of Battery Storage and Electrolyzer for Supply and Demand Adjustment Market

This paper proposes a novel coordinated control method, termed “H2-Assisted Control”, and an operation planning approach to enhance the power supply and demand adjustment capability of a hybrid system composed of battery storage and water electrolyzer. The H2-Assisted Control facilitates power exchange between the battery storage and the electrolyzer, ensuring sufficient charge/discharge margin of the battery required for power supply and demand adjustment. Based on this control method, a mathematical optimization model for operation planning is developed, which considers the charge/discharge margin requirements of the battery storage and shifts part of these requirements to hydrogen storage. Simulation results validate that the proposed plan can be effectively executed using the H2-Assisted Control and demonstrate an increase in feasible adjustment capacity (ΔkW), thereby leading to improved operational profit.