Valuation of Energy Storage Operation in an AC Power Flow Model

High integration of renewable sources in power systems requires additional assets that can sustain reduced controllability and increased variability of these sources. Energy storage has emerged as a flexible asset that increases flexibility and ensures a more economic and secure power system operation. This paper integrates large-scale battery energy storage in power system under different levels of wind power penetration. As opposed to many models already available, we use the full AC model approach that accurately represents power system operation, but at a cost of high computational burden. The proposed model is applied to the IEEE 24-bus test case modeled in GAMS environment and solved with. The power system operation is simulated with and without battery energy storage to show its contribution to the reduction of power system operating costs.