MPC-based energy management strategy for a substation PEDF System

Abstract

According to the optimal scheduling and balanced utilization of power generation units, energy storage, and flexible loads in the PEDF(photovoltaic, energy storage, direct current and flexibility) system of a substation, and realizing stable operation with different time scales and operation modes, this paper proposes a hierarchical control framework, which includes energy management layer, power conversion layer, stability control layer, and an MPC-based energy management strategy based control. Among them, the energy management system uses the prediction of the absorbed power and current of the distributed generation units and loads, and based on the technology of model predictive control to generate the optimal reference power and decision variables for the system to decide the on/off of the system’s dispatchable generation unit and the operation mode of photovoltaic and battery. Finally, the proposed control architecture and strategy are validated by a substation PEDF system.