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Technical feasibility study of thermal energy storage integration into the conventional power plant cycle
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Wojcik, Jacek D. and Wang , Jihong (2017) Technical feasibility study of thermal energy storage integration into the conventional power plant cycle. Energies, 10 (2). 205. doi:10.3390/en10020205 ISSN 1996-1073.
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Official URL: http://dx.doi.org/10.3390/en10020205
Abstract
The current load balance in the grid is managed mainly through peaking fossil-fuelled power plants that respond passively to the load changes. Intermittency, which comes from renewable energy sources, imposes additional requirements for even more flexible and faster responses from conventional power plants. A major challenge is to keep conventional generation running closest to the design condition with higher load factors and to avoid switching off periods if possible. Thermal energy storage (TES) integration into the power plant process cycle is considered as a possible solution for this issue. In this article, a technical feasibility study of TES integration into a 375-MW subcritical oil-fired conventional power plant is presented. Retrofitting is considered in order to avoid major changes in the power plant process cycle. The concept is tested based on the complete power plant model implemented in the ProTRAX software environment. Steam and water parameters are assessed for different TES integration scenarios as a function of the plant load level. The best candidate points for heat extraction in the TES charging and discharging processes are evaluated. The results demonstrate that the integration of TES with power plant cycle is feasible and provide a provisional guidance for the design of the TES system that will result in the minimal influence on the power plant cycle.
Item Type: | Journal Article | ||||||||
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Subjects: | T Technology > TJ Mechanical engineering and machinery T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||
Library of Congress Subject Headings (LCSH): | Heat storage , Electric power distribution , Electric power-plants | ||||||||
Journal or Publication Title: | Energies | ||||||||
Publisher: | M.D.P.I.A.G. | ||||||||
ISSN: | 1996-1073 | ||||||||
Official Date: | February 2017 | ||||||||
Dates: |
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Volume: | 10 | ||||||||
Number: | 2 | ||||||||
Article Number: | 205 | ||||||||
DOI: | 10.3390/en10020205 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Restricted or Subscription Access | ||||||||
Date of first compliant deposit: | 9 February 2017 | ||||||||
Date of first compliant Open Access: | 9 February 2017 | ||||||||
Funder: | Engineering and Physical Sciences Research Council (EPSRC) | ||||||||
Grant number: | EP/K021095/1, EP/K002228/1 | ||||||||
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