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Optimal operation of a hydrogen storage and fuel cell coupled integrated energy system

Utomo, Oscar, Abeysekera, Muditha and Ugalde-Loo, Carlos E. 2021. Optimal operation of a hydrogen storage and fuel cell coupled integrated energy system. Sustainability 13 (6) , 3525. 10.3390/su13063525

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Abstract

Integrated energy systems have become an area of interest as with growing energy demand globally, means of producing sustainable energy from flexible sources is key to meet future energy demands while keeping carbon emissions low. Hydrogen is a potential solution for providing flexibility in the future energy mix as it does not emit harmful gases when used as an energy source. In this paper, an integrated energy system including hydrogen as an energy vector and hydrogen storage is studied. The system is used to assess the behaviour of a hydrogen production and storage system under different renewable energy generation profiles. Two case studies are considered: a high renewable energy generation scenario and a low renewable energy generation scenario. These provide an understanding of how different levels of renewable penetration may affect the operation of an electrolyser and a fuel cell against an electricity import/export pricing regime. The mathematical model of the system under study is represented using the energy hub approach, with system optimisation through linear programming conducted via MATLAB to minimise the total operational cost. The work undertaken showcases the unique interactions the fuel cell has with the hydrogen storage system in terms of minimising grid electricity import and exporting stored hydrogen as electricity back to the grid when export prices are competitive.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Engineering
Publisher: MDPI
ISSN: 2071-1050
Funders: WEFO
Date of First Compliant Deposit: 13 April 2021
Date of Acceptance: 12 March 2021
Last Modified: 14 Apr 2021 11:00
URI: http://orca.cardiff.ac.uk/id/eprint/140465

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