电/热/气多能转换的可逆固体氧化物燃料电池信息物理融合建模与仿真

Cyber-physical system (CPS) is an important feature of energy internet (EI), and its model is fundamental for energy management system in energy internet. In this paper, a CPS model for reversible solid oxide fuel cell (RSOFC) with coupled multi-energy flows of power, heat and gas was developed. In this model, the physical model for RSOFC was based on mass and energy conservation equations. The state machine was used for state transition between operating modes of hydrogen production and power generation. RSOFC CPS model was built by means of time series analysis on the physical system and cyber system. Multi-energy flows of power, heat and gas were expressed in unified standard to indicate multi-energy conversion of energy joint. Two simulation cases with different time steps are conducted and analyzed. Simulation results show that the model can accurately respond to power dispatch signal and control stack temperature and fuel or steam utilization at the preset level. It also indicates that functions of dispatch, control and interaction with the CPS model can be implemented.