Study on Low Carbon Economic Dispatch of Cogeneration Microgrid

In order to reach the carbon peaking and carbon neutrality goals, our country adopted a carbon trading system on tax policy, which can stimulate and promote enterprises’ energy saving activities. Actively introduce carbon capture equipment in technology, reducing carbon dioxide emissions from the root. In this paper, the low carbon economy operation dispatch of cogeneration microgrid with carbon capture technology is proposed. Under the condition of taking into account the traditional carbon trading system, the overall operating cost of the system is minimized as the objective function, including the system electricity purchase cost, gas purchase cost, carbon trading cost and system operation and maintenance cost interacting with the superior main network. In addition, considering the electrical balance constraint, thermal balance constraint and equipment constraint of the system, a microgrid model is established and solved. Various costs and carbon emissions of the two scenarios are compared and analyzed, and the low-carbon economic benefits of the proposed scheduling model are confirmed. The influence of the change of carbon trading price on net carbon emissions and system operation status is analyzed.