Integration of Small-Scale Compressed Air Energy Storage with Wind Generation for Flexible Household Power Supply

Xinjing Zhang, Chao Qin, Yujie Xu, Wen Li, Xuezhi Zhou, Ruimin Li, Y Huang, Haisheng Chen

Research output: Contribution to journalArticlepeer-review

Abstract

Energy storage can help regulate energy supply and demand and facilitate utilization of distributed renewable energy. Compressed Air Energy Storage (CAES) can store surplus energy from wind generation for later use, which can help alleviate the mismatch between generation and demand. In this study, a small-scale CAES system, utilizing scroll machines for charging and discharging, was developed to integrate into a wind generation for a household load. A simulation model, which was verified by our experiments results, was constructed for investigating the performance of the small-scale energy storage system. The operation map of the expander was obtained through the simulation for illustrating the expander’s optimal parameters. A fluctuating wind generation profile was integrated into the small CAES to supply adjustable electricity. The dynamic performance of key components including compressor, expander and storage tank was assessed for the first time for a practical application. The results revealed that distributed renewables with an energy storage system become flexible and such integration can help satisfy fluctuating power demand. Efficiency of energy utilization, which was defined as the percentage of energy consumption to wind generation in a typical day, also achieved a value as high as 88.75%. At the same time, maximal installation of generating capacity coupled with the integration of the CAES system was reduced by 15%.
Original languageEnglish
Article number102430
Pages (from-to)1-9
Number of pages9
JournalJournal of Energy Storage
Volume37
Issue number102430
Early online date10 Mar 2021
DOIs
Publication statusPublished - 31 May 2021

Keywords

  • compressed air energy storage
  • wind generation
  • household power supply
  • dynamic performance
  • energy utilization
  • Dynamic performance
  • Energy utilization
  • Household power supply
  • Wind generation
  • Compressed air energy storage

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