Multi-objective optimization of capacity configuration for grid-connected microgrid system

The grid-connected microgrid can be connected to the distribution network, which can provide some power support from the distribution network, and can run independently when the distribution network is faulty. This paper first analyzes the comprehensive benefits of grid-connected microgrid, then considers the coordinated operation of distributed power supply, peak and valley price and spare capacity when interacting with distribution network. Finally, a multi-objective optimal allocation model including the economic, environmental and reliability benefits of microgrid is proposed, and the multi-objective particle swarm optimization algorithm is used to solve the problem.