Integrated operation mode of grid-connected microgrid considering double-layer demand response

The market-oriented operation mode of grid-connected microgrid is crucial to improve the operator's revenue and promote the large-scale development of grid-connected microgrid. An integrated operation mode considering double-layer demand response is proposed in this paper. In this mode, the microgrid operator is sole and can carry out multi-type purchase and sale of electricity, self-declaration of maximum demand and double-layer demand response, and achieve the goal of economic optimization by internal "source-load-storage" unified coordination and optimal operation. Day-ahead optimal scheduling models of grid-connected microgrid under the proposed operation mode and decentralized operation mode are established and solved by CPLEX. The annual revenue of the operator is calculated considering the multiple scenes of distributed generator output and electricity price. An actual microgrid system containing wind turbine, photovoltaic generator and energy storage system is taken as an example to verify the superiority of the proposed operation mode.