Short-term planning of hydro-thermal system with high wind energy penetration and energy storage

Wind based electricity generation is considered as one of the solutions for emission reduction. However, variability and uncertainty of wind speeds create challenges for balancing in the power systems and in many cases require improvements in ramping capabilities of the system along with additional reserved generation capacity. Ramping capability as well as generation reserves could be provided by different technologies such as thermal and hydro generation and different types of energy storage. The last option is considered to be a possible solution for power systems with large wind generation. This paper provides a model for short-term planning of the hydro-thermal power system with high wind energy penetration and presence of a large scale energy storage unit. The model is used to compare the effect of different generation mix and energy storage presence on the operation of the power system and balancing cost in particular.