Low Carbon Economic Dispatch of Integrated Energy System Considering Demand Response and Carbon Capture Under Stepped Carbon Trading

In order to further limit the carbon emission of the integrated energy system and reduce the operation cost towards the goal of “dual-carbon”, this paper proposes an optimal scheduling model that takes into account the economic and environmental benefits. Firstly, a cooperative operation model of carbon capture device and power-to-gas device (CCPP-P2G) is established, and its working principal model architecture is analyzed. Secondly, a demand response mechanism is introduced to analyze the cuttable and substitutable characteristics of the user side. Finally, the stepped carbon trading mechanism is introduced to analyze its impact on carbon emission reduction, and a low-carbon economic dispatch model of the integrated energy system is established with the objective function of minimizing the total operating cost of the system. By setting up several cases for simulation and analysis, the results show that the proposed model and method have the effect of peak shaving and valley filling, which can effectively reduce the total operating cost and carbon emission of the system.