Capacity Optimization of Multi-energy complementary Microgrid Considering Green Hydrogen System

The development of hydrogen energy is one of the key paths to realize the clean and low-carbon transformation of the global energy system. Producing green hydrogen from renewable energy has broad prospects. This paper proposes a capacity optimization configuration model for island-operated microgrids coupled with wind/solar/green hydrogen systems, with the goal of minimizing the equivalent annual cost of the system's operating life. The model takes into account investment costs, operating costs, fuel costs, and value of lost loads, considering the operation constraint of microgrid, green hydrogen system and diesel engines. Taking annual wind speed, temperature, and light intensity as inputs, the optimal scheme for the type and capacity of the microgrid power source is obtained. Taking an island microgrid as an example for verification, the results show the effectiveness of the proposed optimal configuration method, which provides theoretical basis and technical support for the planning and design of island microgrid considering green hydrogen systems.