Unit Commitment with Wind Generation and Reversible-Hydro System in Islands

Abstract The large share of renewable generation in electric power systems has promoted a big change in the way of scheduling the generation of power plants. Renewable energy is subject to a high variability and the forecast of future renewable production becomes a difficult task. Wind power uncertainty has influenced the operation of electrical power systems. In order to maintain the reliability and the power balance of a power system, conventional units have to be operated more flexibly. In isolated places, like islands, the influence of wind uncertainty on the operation is more pronounced. This paper tries to model the unit commitment for an isolated area with different generation technologies, such as thermal, wind, and hydro power. The model aims to reduce the operational costs of the thermal units while satisfying technical constraints and finding the optimal amount of reserves.