Coordination and Optimization of Muti-region Building Virtual Power Plant with Photovoltaic and Wind-power Units

Abstract

In order to solve the unstable or economical shortages of power grids and realize the coordinated optimization of distributed energy supply systems in different regions of virtual power plant (VPP), a coordinated optimization scheduling model for multi-region building virtual power plants with wind-power and photovoltaic units is established. The VPP is made up of wind turbine, household photovoltaic, energy storage system (ESS) and electric vehicles (EV). Through inter-regional comprehensive energy interconnection, multi-regional VPP power is complemented. In order to make the electric energy sharing within VPP reasonable, the optimal model with the objective function of reducing the transaction cost between VPP and distribution network, the maintenance cost of wind-power and photovoltaic units and the maintenance cost of EV was established. Finally, the validity of the proposed model is verified by a case study of a typical building VPP with a residential building and a commercial building. The simulation results show that the proposed method can realize the coordinated and optimal power scheduling of different regions and different types of aggregation units, and effectively reduce the net cost of VPP.