Energy Storage Science and Technology ›› 2022, Vol. 11 ›› Issue (9): 2772-2780.doi: 10.19799/j.cnki.2095-4239.2022.0246

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Developmentcost analysis considering various durationsand advancement of vanadium flow batteries

Huamin ZHANG()   

  1. Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
  • Received:2022-05-09 Revised:2022-06-11 Online:2022-09-05 Published:2022-08-30

Abstract:

Renewable energy is gradually changing from auxiliary energy to dominant energy. The establishment of a new power system with "new energy and energy storage" as the main body puts forward new requirements for high-power, large-capacity, and long-term energy storage technology. Energy storage technology has the characteristics of intrinsic safety, long cycle life, recyclable electrolyte, good life cycle economy, and environmental friendliness. In recent years, it has received extensive attention from academia and industry. On the basis of the author's experience in the research, development and industrialization of flow battery energy storage technology, this paper reviews the development process of flow battery, and introduces the basic principle, performance characteristics and technology of vanadium flow battery energy storage technology. And the industrialization development status, combined with many years of high-power, large-capacity vanadium flow battery energy storage system engineering practical design experience, the modular design method of large-scale energy storage power station is clarified, the implementation of 5 MW/10 MWh vanadium flow battery energy storage system. The energy system industrialization project has been operating safely and stably for more than 9 years, and the energy conversion efficiency and energy storage capacity have not declined significantly. The practical application results fully verify the safety and reliability of the vanadium flow battery energy storage system. It has met the requirements of industrial application. According to the actual price of the megawatt-scale energy storage system in the third quarter of 2021 by the world's leading vanadium flow battery energy storage equipment, the price and life cycle economy of the vanadium flow battery energy storage system with different energy storage durations were analyzed, and it was pointed out that the focus of future research and development.

Key words: vanadium flow battery, energy storage system, cost analysis, long duration energy storage

CLC Number: