Subsea buoyancy and gravity energy storage system for deep-water applications: A preliminary assessment

• Published in: Volume 8: Ocean Renewable Energy
• Main Authors: Novgorodcev Junior, André Reinaldo (author), Mols, F. (author), Jarquin Laguna, A. (author)
• Format: Conference Object
• Language: English
• Published: The American Society of Mechanical Engineers (ASME) 2022
• Subjects: Buoyancy energy storage; Gravity energy storage; offshore energy; Arctic
• Online Access: http://resolver.tudelft.nl/uuid:4b0c076b-87b2-4533-ae45-409a11b820bf; https://doi.org/10.1115/OMAE2022-78138

This article presents a preliminary assessment of a subsea buoyancy and gravity energy storage system (SBGESS). The storage device is designed to power an off-grid subsea water injection system to be installed at the Libra oil field in Brazil at 2000 m below sea level. Two 12MW floating wind turbines provide the energy supply. The system performance is evaluated according to historical wind data from reanalysis models, the water injection pumps power curves, the required daily water flow rate, and the maximum number of shutdowns allowed per year. A control strategy with three different operation modes and one energysave sub-mode was implemented to optimise the size of the proposed energy storage system. Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public. Offshore Engineering Mechanical, Maritime and Materials Engineering Offshore and Dredging Engineering