Power Control and Energy Management of Grid-Scale Energy Storage Systems for Smart Users

The owners of the energy storage systems (ESS) and grid operators, must have access to proper mechanisms for planning and control of the grid-scale storages. This mechanism must cover the technical, economical, and practical constraints of ESS to guarantee the safe and reliable operation of the ESS, especially for ESS's participation in the power market. This work presents a smart methodology to manage the energy level as well as to control power in the grid-scale ESS. The proposed method is the expansion of the optimal power flow (OPF) algorithm to control power exchanged in storages. Furthermore, the novel smart power processes are added to the ESS model used in the OPF program. These smart processes implement the technical ESS constraints into the OPF to assure the technical/economical operation of the ESS in all operation modes, as well as to grantee the secure ESS operation through the switching between the operation modes. The Simulink study confirms that the proposed technique taking to account the power process is a trustable method to schedule the ESS in the grid level applications.