Cooperative Operation Method of Multi-micro-grids Power-Sharing Based on Nash Bargaining

Researching an energy system featuring efficient use of renewable energy and low-carbon operation of the power system will be an essential direction for constructing the energy internet. This paper builds a micro-grid model of electricity, heat, and gas coupling, which considers carbon allowances and carbon trading to reduce carbon emissions by adding the CHP unit's CCS and P2G systems. It constructs a model of cooperative operation of power-sharing across multi-micro-grids by combining Nash bargaining theory, which converts to the sub-problems of coalition profit maximization and cooperative profit distribution. To solve the problems in a distributed fashion, the alternating direction method of multipliers is used, effectively protecting each subject's privacy. The simulation results prove that the method has good convergence characteristics and effectively improves the proceeds of each micro-grid.