System dynamics of oxyfuel power plants with liquid oxygen energy storage

Date published

2017-12-15

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Elsevier

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Article

ISSN

1876-6102

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Citation

Yukun Hu, Anurag Tewari, Liz Varga, Hailong Li, Jinyue Yan, System dynamics of oxyfuel power plants with liquid oxygen energy storage, Energy Procedia, Volume 142, December 2017, Pages 3727-3733

Abstract

Traditional energy storage systems have a common feature: the generating of secondary energy (e.g. electricity) and regenerating of stored energy (e.g. gravitational potential, and mechanical energy) are separate rather than deeply integrated. Such systems have to tolerate the energy loss caused by the second conversion from primary energy to secondary energy. This paper is concerned with the system dynamics of oxyfuel power plants with liquid oxygen energy storage, which integrates the generation of secondary energy (electricity) and regeneration of stored energy into one process and therefore avoids the energy loss caused by the independent process of regeneration of stored energy. The liquid oxygen storage and the power load of the air separation unit are self-adaptively controlled based on current-day power demand, day-ahead electricity price and real-time oxygen storage information. Such an oxyfuel power plant cannot only bid in the day-ahead market with base load power but also has potential to provide peak load power through reducing the load of the air separation unit in peak time. By introducing reasoning rules with fuzzy control, the oxygen storage system has potential to be further extended by integrating renewable energy resources into the system to create a cryogenic energy storage hub.

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Software Description

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Github

Keywords

oxyfuel power plant, oxygen storage, system dynamics, load distribution, AnyLogic

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Attribution 4.0 International

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