Rapid sizing of a hydrogen-battery storage for an offshore wind farm using convex programming |
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| Affiliation: | 1. Key Laboratory of Renewable Energy, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou, 510640, China;2. Shanwei Branch of Advanced Energy Science and Technology Guangdong Laboratory, Shanwei, 529599, China;1. The School of Chemistry and Chemical Engineering, State Key Laboratory of Power Transmission Equipment & System Security and New Technology, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing City, 400044, PR China;2. The School of Electrical Engineering, Chongqing University, 174 Shazheng Street, Shapingba District, Chongqing City, 400044, PR China;1. Science and Technology on Surface Physics and Chemistry Laboratory, Mianyang, 621907, Sichuan, China;2. Institute of Materials, China Academy of Engineering Physics, Mianyang, 621900, Sichuan, China;1. Qatar Environment and Energy Research Institute (QEERI), Hamad Bin Khalifa University, Doha, 34110, Qatar;2. Oxford Thermofluids Institute, Oxford University, Oxford, OX2 OES, UK;3. Division of Sustainable Development, College of Science and Engineering, Hamad Bin Khalifa University, Qatar Foundation, Doha, Qatar;4. Gas Processing Center, College of Engineering, Qatar University, Doha, 2713, Qatar;1. School of Materials Science and Engineering, Jiangsu University of Science and Technology, Zhenjiang, 212000, Jiangsu, China;2. Institute of Technology Center, Jiujiang Pinggang Iron and Steel of Fangda Group Co. Ltd, Jiujiang, 332599, China;3. College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China;4. State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization, Pangang Group Research Institute Co., Ltd., Panzhihua, 617000, China |
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| Abstract: | This paper carries out a comprehensive analysis on an offshore wind farm equipped with a hybrid storage comprised of hydrogen and battery, from the perspective of economic effectiveness. To rapidly evaluate the system economy, a computationally efficient convex program that takes the nonlinear storage efficiencies into account is provided, which can simultaneously and synergistically optimize the storage sizing and energy management over a long offshore wind cycle. In the analysis, a case study on the optimal configuration and operation of the hybrid storage is thoroughly investigated, answering what the scalings are and how the storage functions in the offshore wind farm. Comparisons to other offshore wind farms with none or only one storage type further demonstrate the advantage of combining hydrogen plant and battery. Influences of the offshore wind electricity price of grid parity and hydrogen price on the system economies, in the terms of total annual cost, net annual profit and hydrogen production cost, are also discussed, revealing sensitivity and dependency of the scalings. Finally, this paper presents the future potential of applying hydrogen plant in the offshore wind farm, from the angles of hydrogen production cost and energy saving. |
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| Keywords: | Offshore wind farm Hydrogen storage Optimal sizing Energy management Convex programming |
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