Decentralized renewables power production is rapidly growing because of environmental concerns. With the purpose of maximizing renewable exploitation, energy storage systems integration in Mini-Grids (MGs) is needed. Hybrid energy storage systems (HESSs) are promising to obtain enhanced performances in terms of both capacity and responsiveness, yet their feasibility may be hindered by design and management choices impacting the economic competitiveness. In this paper, two HESSs are analysed and compared in a real case-study, namely reversible solid oxide cell (rSOC)/Li-ion battery and flywheel/Li-ion battery systems. The analysis here developed handles annual photovoltaic generation and electric load actual dataset and includes: i) a statistical analysis to obtain the most representative days, ii) dynamic modeling of the HESSs, iii) simulations to define components sizing and to extrapolate the evolution of annual battery state-of-charge, iv) battery lifespan assessment through application of the rainflow cycle counting algorithm, and v) a detailed economic evaluation (Levelized Cost of energy LCOE, Levelized cost of Storage LCOS and their sensitivity to electricity market price) including subsidies for self-consumption. For both HESSs, performance indexes of reduction of energy withdrawal from the grid and self-consumption increase are fixed at about 30 % and 70 % respectively, with reference to the features of the investigated MG. As main outcomes for this integrated methodology, it appears that self-consumption rewards (i.e.110 €/MWh) let the flywheel/Li-ion battery HESS reach a LCOS agreeing with 2021 average market parity. On the contrary, LCOS is more than two-fold for the rSOC/Li-ion battery HESS, being equal the impact on the MG management and its energy independence from the main power grid. The integrated methodology is adequate for critically reviewing design and management choices and understanding the impact of the market on the profitability of a sub-system, with insight on energy storage units.

Battery-hydrogen vs. flywheel-battery hybrid storage systems for renewable energy integration in mini-grid: A techno-economic comparison / Pelosi, D.; Baldinelli, A.; Cinti, G.; Ciupageanu, D. -A.; Ottaviano, A.; Santori, F.; Carere, F.; Barelli, L.. - In: JOURNAL OF ENERGY STORAGE. - ISSN 2352-152X. - 63:(2023), pp. 1-15. [10.1016/j.est.2023.106968]

Battery-hydrogen vs. flywheel-battery hybrid storage systems for renewable energy integration in mini-grid: A techno-economic comparison

Carere F.;
2023

Abstract

Decentralized renewables power production is rapidly growing because of environmental concerns. With the purpose of maximizing renewable exploitation, energy storage systems integration in Mini-Grids (MGs) is needed. Hybrid energy storage systems (HESSs) are promising to obtain enhanced performances in terms of both capacity and responsiveness, yet their feasibility may be hindered by design and management choices impacting the economic competitiveness. In this paper, two HESSs are analysed and compared in a real case-study, namely reversible solid oxide cell (rSOC)/Li-ion battery and flywheel/Li-ion battery systems. The analysis here developed handles annual photovoltaic generation and electric load actual dataset and includes: i) a statistical analysis to obtain the most representative days, ii) dynamic modeling of the HESSs, iii) simulations to define components sizing and to extrapolate the evolution of annual battery state-of-charge, iv) battery lifespan assessment through application of the rainflow cycle counting algorithm, and v) a detailed economic evaluation (Levelized Cost of energy LCOE, Levelized cost of Storage LCOS and their sensitivity to electricity market price) including subsidies for self-consumption. For both HESSs, performance indexes of reduction of energy withdrawal from the grid and self-consumption increase are fixed at about 30 % and 70 % respectively, with reference to the features of the investigated MG. As main outcomes for this integrated methodology, it appears that self-consumption rewards (i.e.110 €/MWh) let the flywheel/Li-ion battery HESS reach a LCOS agreeing with 2021 average market parity. On the contrary, LCOS is more than two-fold for the rSOC/Li-ion battery HESS, being equal the impact on the MG management and its energy independence from the main power grid. The integrated methodology is adequate for critically reviewing design and management choices and understanding the impact of the market on the profitability of a sub-system, with insight on energy storage units.
2023
battery; energy storage; flywheel; hybrid system; hydrogen; mini-grid; renewables
01 Pubblicazione su rivista::01a Articolo in rivista
Battery-hydrogen vs. flywheel-battery hybrid storage systems for renewable energy integration in mini-grid: A techno-economic comparison / Pelosi, D.; Baldinelli, A.; Cinti, G.; Ciupageanu, D. -A.; Ottaviano, A.; Santori, F.; Carere, F.; Barelli, L.. - In: JOURNAL OF ENERGY STORAGE. - ISSN 2352-152X. - 63:(2023), pp. 1-15. [10.1016/j.est.2023.106968]
File allegati a questo prodotto
File Dimensione Formato  
Pelosi_Battery_2023.pdf

solo gestori archivio

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 3.53 MB
Formato Adobe PDF
3.53 MB Adobe PDF   Contatta l'autore

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1674382
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 7
  • ???jsp.display-item.citation.isi??? 6
social impact