Optimal operation of microgrids considering stabilized expansion of grid-forming energy storage

Grid-forming energy storage can not only have the conventional energy storage function, but also be able to improve the system inertia to meet the demand for rapid frequency and voltage regulation of microgrid with high renewable penetration. Therefore, the grid-forming energy storage technology is an important form to promote the development of microgrid technology. In this paper, to investigate the impact of energy storage control strategy, an optimal operation model of microgrids considering stabilized expansion of grid-forming energy storage is proposed. Firstly, a microgrid cluster architecture with two sub-microgrids is built. The efficiency model of each component of the microgrid cluster is determined, and different energy storage control strategies are analyzed. Based on the different energy storage control strategies, different start-up modes of diesel generators constraints are set. Secondly, with the operating cost of microgrids as the optimization objective and the diesel generator start-up mode