期刊
ENERGY CONVERSION AND MANAGEMENT
卷 205, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.enconman.2019.112421
关键词
Calcium-looping; Thermochemical energy storage; Hybrid energy systems; Concentrated solar power; Photovoltaic systems; Multi-objective optimisation
资金
- Becas Chile, National Commission for Scientific and Technological Research (CONICYT-Chile) [Folio 72160177]
- Energy Technology Partnership (ETP), International Exchange Grants for Postgraduate and Early Career Researcher Exchanges (PECRE) 2018
- Horizon 2020 Project Socratces [727348]
- Spanish Government Agency Ministerio de Economia y Competitividad (MINECO-FEDER funds) [CTQ2017-83602-C2 (-1-R), CTQ2017-83602-C2 (-2-R)]
Energy storage is key to decarbonising the energy sector by reducing intermittency and increasing the integration of renewable energy. Thermochemical energy storage (TCES) integrated with concentrated solar and photovoltaic power plants, has the potential to provide dispatchable and competitive energy. Here we develop a multi-objective optimisation framework to find the best operational strategy of a hybrid solar power plant with a TCES system. The model uses a typical meteorological year to optimise one-year hourly operation. The results demonstrate that the integration of a calcium-looping process as TCES in a concentrated solar power plant provides dispatchability and, when hybridised with photovoltaic, enhances its competitiveness with current electricity prices. The low mismatch between supply and demand, even when a fixed commitment is required throughout the year, together with a high overall efficiency, indicates that the integration of calcium-looping in hybrid solar power plants is an opportunity to increase the penetration of solar energy in the power sector. Through the optimisation framework presented, a seasonal energy storage analysis can be developed, although a second optimisation stage is required to improve the sizing of the main components of the system in order to further reduce the energy costs.
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