Low Carbon Economic Dispatch of Integrated Energy Systems Considering Improved Stepped Carbon Trading and Flexible Loads

In order to further limit the carbon emission of integrated energy system and reduce the operation cost, this paper proposes an optimal dispatch model that considers the economic and environmental benefits. Firstly, a flexible load model is established to analyze the transferable, reducible and translatable characteristics of the user side. Secondly, an improved stepped carbon trading mechanism is introduced to analyze its impact on carbon emission reduction, and a low-carbon and economic dispatch model of the integrated energy system is established with the objective function of minimizing the total operating cost of the system. Finally, several cases are set up for simulation analysis, and the results show that the improved stepped carbon trading mechanism optimizes the energy structure of the system while further restricting the carbon emission of the system. Besides, the participation of flexible loads can significantly reduce the operating cost of the system, optimize the load curve, and alleviate the pressure of peak electricity consumption.