Research on Optimal Configuration of Park Level Integrated Energy System for Hydrogen Production Based on Wind Power

Hydrogen production in park level of integrated energy systems (PIES) with utilization of abundant wind and solar resources can effectively improve the economic benefits of the PIES and promote the integration of renewable energy. This study constructs a PIES with an electricity-hydrogen storage structure. The optimization configuration model is established with the system’s life cycle cost as the objective function, under the constraints of power balance and equipment output limit. The model is solved using a mixed-integer linear programming approach. Based on three different scenarios of the output capacity of the hydrogen storage equipment, the configuration of the PIES equipment, cost analysis, and purchase-sale electricity strategies are investigated, respectively. The analysis results demonstrate that the integrated energy system with the electricity-hydrogen storage structure can effectively utilize the peak-shaving and load-filling capabilities of the energy storage devices to meet the real-time energy demands of users. Moreover, by properly combining the electricity-hydrogen storage capacity, the system not only ensures the economic benefits of the PIES but also provides the park operator with more flexible electricity exchange strategies with power grid.