Optimal Coordination of Hydrogen-Enabled Building Energy Systems Considering Thermal Dynamics

To reach the CO2 emission peak and carbon neutrality, hydrogen has attracted a lot of attention as a promising way to decarbonize building energy systems. However, due to the bidirectional conversion characteristics of hydrogen and electricity, hydrogen integrated into the building energy system may make the multi-energy supply and demand coupled, which need to be well coordinated. The optimal coordination of the hydrogen-enabled integrated energy system (HIES) is investigated in this paper. The thermal dynamics of energy supply devices and rooms are considered to precisely describe the system operation processes and flexibility. And a successive subproblem solving-based optimization (SSSO) algorithm is developed to address the computational challenge, with the key information transmission. Numerical results show that a near-optimal solution can be obtained by the SSSO algorithm with a limited computational cost. The system flexibility can be obviously enhanced by the coordination of the thermal dynamics and energy storage, and the operation cost can be saved by more than 56%.