Research on electricity-carbon coupling trading strategy for multi-integrated energy systems considering renewable energy

Aiming at the problem that the impact of current electricity-carbon coupling transaction on system scheduling is rarely considered and the emission reduction effect of a single integrated energy system is limited, this paper proposes an electricity-carbon coupling trading strategy for multi-integrated energy systems considering renewable energy. Firstly, the electricity-carbon coupling trading architecture of differentiated interconnected integrated energy systems is designed in order to make full use of the complementary advantages. Considering the different characteristics of power supply equipment, load demand, and low-carbon means of different IESs, such as electric vehicle and carbon capture units, the coordinated operation models of typical systems including technology park(considering wind turbines), residential area(considering photovoltaic equipment) and industrial area are established. Secondly, based on the Nash bargaining model that considers the contribution of electricity and carbon emission reduction of the participating entities through the comprehensive contribution rate, a multi-system cooperative operation strategy based on electricity-carbon coupling trading is proposed. Finally, the alternating direction method of multipliers is used for distributed solution. Simulation analysis verifies that the proposed strategy, compared to trading single electricity and carbon emission allowance, decreases the cost of the alliance by 1697 yuan and 7517 yuan respectively, and meanwhile reduces the carbon emission by 38.63 t and 0.58 t.