To enhance the utilization rate of renewable energy in microgrid systems and achieve reductions in both wind and solar curtailment as well as carbon emissions through energy interconnection among multiple microgrids
this paper proposes a low-carbon optimal scheduling model for a multi-microgrid system that integrates regional thermal and electrical networks
incorporating a carbon-green certificate trading mechanism. Firstly
the mathematical model of microgrids in the context of electrical-thermal coupled multi-microgrid interconnection scenarios is systematically analyzed. Then
based on the introduction of the carbon-green certificate trading mechanism
a planning model for the electrical-thermal coupled multi-microgrid interconnection system is developed
with the objective of minimizing the overall system cost. An optimization strategy using the mixed-integer programming method solved by the CPLEX solver is proposed. Finally
the model’s effectiveness is validated through a case study of a typical scenario in western China. The research findings demonstrate that the proposed model can effectively enhance the renewable energy absorption capacity of the multi-microgrid system
reduce carbon emissions
and achieve optimal overall system economic performance.
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