Under the background of low carbon electricity and energy interconnection

taking into account the difficulties in new energy consumption and other issues

based on the carbon trading (CET) mechanism

combined with the green certificate trading (GCT) mechanism

a regional integrated energy system (RIES) optimization method considering the green certificate carbon quota mutual recognition mechanism is proposed. Firstly

the principles of carbon trading and green card trading are explored

and HFC equipment and hydrogen storage are introduced to optimize the electricity to gas process to further absorb new energy power generation. Secondly

carbon trading and green card trading are linked through mutual recognition of green card electricity and carbon emission quota

breaking the traditional barriers of carbon trading and green card trading. Finally

taking the minimum total cost of RIES as the objective function

an optimization model of RIES considering mutual recognition of green certificate and carbon quota is constructed. The simulation results show that the proposed method can effectively improve the economy of the system on the premise of ensuring a high energy utilization rate

and can improve the new energy consumption while reducing the carbon emissions of the system.