Integrated energy system is one of the important forms of future energy system development

how to ensure the economic and efficient operation of the system is the key factor for the development of integrated energy system under the condition that cold

heat

electricity and gas are integrated into the system. Against the economic operation of park integrated energy system

an electric-thermal cooperative optimization method which considers the carbon trading mechanism and demand response is put forward. Considering the stepped carbon trading mechanism of the park integrated energy system

a multi-objective operation optimization model is constructed

which aims at minimizing the system operation cost and maximizing the energy efficiency level

and a solution method of the operation optimization model based on the improved differential evolution algorithm is proposed. A typical park integrated energy system is simulated

and the economic operating conditions and energy efficiency level of the system before and after participating in demand response are analyzed. The results show that

this operation optimization model can realize the optimal operation of the park integrated energy system in the demand response environment

and the power grid demand response mechanism can effectively guide the park integrated energy system to improve the system energy efficiency

enhance the utilization efficiency of key devices and reduce the operation cost.