Energy Management of Grid-Connected Renewable Energy Hubs with Thermal, Compressed Air and Hydrogen Storages and Heat Pump

This article explains how electrical and thermal network hubs manage their energy consumption in the context of the multi-criteria objectives of economic and operation of the network operator. The hubs have solar power, a bio-waste unit, and wind turbines among other sustainable energy sources. They have compressed air, heat, and hydrogen storage units installed. Thermal energy is produced by means of a heat pump from electrical energy. Combining heat and power technology is used by both the bio-waste unit and the hydrogen storage unit. Subject to the operating model of these networks, the suggested strategy seeks to reduce the overall estimated costs of energy procurement within the designated networks. Additional constraints of the problem encompass the operational model of sources and storages, conceptualized as an energy hub. In summary, numerical results validate the usefulness of the proposed approach in enhancing the technical and financial aspects of thermal and electrical networks via efficient hub energy management. The incorporation of renewable hubs, equipped with storage units and heat pumps, has led to improvements in the economic and operational conditions by approximately ۴۴.۱%, and ۲۸%-۹۰%, respectively, in comparison to load distribution studies.

Keywords:

Bio-waste unit , Compressed Air Energy Storage , Economic operation , Hydrogen storage , Renewable energy hub