Low-carbon optimal scheduling of integrated energy system considering hydrogen energy storage, ammonia production and carbon capture

Aiming at the problems of energy abandonment and reserve pressure in the integrated energy sys‑ tem with high wind and photovoltaic permeability，considering the joint operation of hydrogen energy unit，carbon capture and ammonia production unit，a low-carbon optimal scheduling method of the integrated ener‑ gy system with hydrogen energy，ammonia energy and carbon capture is proposed to improve the wind and photovoltaic absorption capacity and operational flexibility of the system. On the one hand，the operation framework of the integrated energy system is proposed，the flexible economic operation strategies of hydrogen energy unit，ammonia production unit，thermal power unit with ammonium-mixed combustion and carbon cap‑ ture device are analyzed，and the mechanism analysis and modeling are carried out. On the other hand，in order to alleviate the system reserve pressure，a collaborative reserve optimization model of hydrogen energy unit，carbon capture and thermal power is established to explore the reserve capacity of hydrogen energy unit and carbon capture device，and then a low-carbon economic scheduling model of integrated energy system is established with the goal of minimizing the total operation cost. Based on the improved IEEE 39-bus system，the simulative results verify the effectiveness and feasibility of the proposed scheduling method. © 2024 Electric Power Automation Equipment Press. All rights reserved.