Optimized scheduling for flexibility improvement of energy interconnection microgrid

The stable operation of energy internet system is affected while renewable energy output and load fluctuations occur. In order to improve the anti-interference ability of the energy internet microgrid that combined heat and power(CHP), the research on the flexibility of system scheduling is studied. Firstly, the available flexibility that each micro-element can provide is analyzed, and the flexibility indicators of power and heating are proposed. Furthermore, a two-stage optimal scheduling model with flexibility improvement is proposed, and addressing uncertainty by scheduling flexible resources. In the day-ahead stage, the cost and flexibility are targeted for optimization. In the real-time adjustment stage, the power deviation caused by uncertainty is corrected by scheduling flexible resource and corrective cost is targeted for optimization. The results proved that the proposed optimal scheduling model can improve the scheduling flexibility and ensure that power fluctuations can be effectively eliminated.