Medium-Term Optimal Operation of Energy Hub in the Presence of an Energy Storage System Under Uncertainty of Electricity Price and Wind Speed

Energy hubs (EHs) are crucial in multi-carrier energy systems, but further research is needed for a deeper understanding. This paper fills this gap by focusing on the medium-term management of an EH in restructured power systems. The model here oversees an EH that handles electrical energy and natural gas to produce electricity and heat. Electricity is procured through methods like market purchases, bilateral contracts, or generation from combined heat and power (CHP) units, diesel generators, and wind turbine generators. An energy storage system (ESS) is integrated to balance supply and demand. Managing this complex hub is challenging due to uncertainties in price and wind output, alongside heat demand met by a furnace and CHP unit. Operators must decide to buy electricity and gas or generate power from different sources, all while minimizing costs with stochastic programming under technical constraints. This study aims to find the optimal amount of power taken from each energy source in the proposed EH, then investigate the impact of integrating an ESS into the EH over the medium term and analyze how the procurement of power from the electricity pool market is influenced.