—The variability of solar and wind energy generation presents significant grid integration challenges especially in the operation of power systems. The optimal use of energy storage system may be a viable solution to control and match the power generation to the load profile. This paper proposes a method to identify the optimum daily operational strategy of a storage system. An hourly optimization problem was formulated for this purpose to maximize the economic gain of a wind farm considering the market price and the main operational restrictions of the hybrid energy system. This method is also suitable for other energy resources and energy storage technologies. Another prominent issue facing renewable energy farms is the proper sizing of the energy storage system. A method to optimize the size of the storage system with respect to the net present cost (NPC), while meeting the service requirement is also proposed. Case studies are presented to verify the effectiveness of these models.
—Energy storage modeling, otptimal operation, scheduling, sizing.
Asmae Berrada is with Al Akhawayn University, Morocco (e-mail:
Cite: Asmae Berrada and Khalid Loudiyi, "Optimal Modeling of Energy Storage System," International Journal of Modeling and Optimization vol. 5, no. 1, pp. 71-77, 2015.