Energy management of gravity energy storage to boost solar energy invasion Online publication date: Tue, 04-Apr-2023
by Stella Morris; Laya M.A. Al-Hilfi; Peer Fathima Abdul Kareem; Morris Ezra
International Journal of Renewable Energy Technology (IJRET), Vol. 14, No. 2, 2023
Abstract: Due to the sporadic nature of renewable energy, RE, maintaining an energy balance becomes challenging for utilities. An increased energy storage capacity would help resolve these challenges. A cutting-edge new grid-scale energy storage technique being studied is gravity energy storage, GES. Even though the literature suggests that GES may be a good replacement for existing energy storage techniques, there is not much research on its potential to boost RE penetration. Therefore, an energy management algorithm is developed for a modified IEEE system to optimise the GES and compare its potential in increasing solar penetration with respect to battery energy storage. A modified particle swarm algorithm is used to minimise network losses. Results show that the solar penetration is increased by 7.26% for the selected data, but the performance of both GES and BES are similar except for how their energy statuses differ owing to variations in depths of discharge.
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