Real-time Optimal Dispatch Method of Microgrid Based on Two-stage Linear Model

As a key technology to ensure the safe and efficient running of microgrid, microgrid real-time optimal dispatch is applied to obtain the optimal solution quickly and reliably in the real project. So the microgrid real-time dispatch strategy in every state space is analyzed in detail, and a two-stage linear model that can achieve minimum equivalent power supply cost and minimum actual power supply cost following day-ahead energy storage SOC plan is proposed. And the charge and discharge guidance coefficient model of energy storage system is established to control its charge and discharge capacity. In the end, through the simulation of microgrid real-time optimal dispatch in every state space and the simulation test of real-time scheduling with / without day-ahead SOC plan, it is verified that proposed method can follow the energy storage SOC plan as far as possible to obtain the real-time scheduling strategy in every state, and effectively reduce the total cost of microgrid power supply.