Dynamic safety assessment of underground compressed air energy storage string subjected to erosion-corrosion degradation

Xinhong Li, Fafu Tian, Renren Zhang, Ziyue Han and Xiuquan Liu

Reliability Engineering and System Safety, 2025, vol. 261, issue C

Abstract: Underground compressed air energy storage (UCAES) gets the rapid development over these years. The string as a channel for air injection and extraction is a critical component of UCAES. The erosion-corrosion degradation is an important failure causation of UCAES string. This paper builds a probabilistic approach for dynamic failure assessment of UCAES string subjected to erosion-corrosion degradation. A dynamic Bayesian network (DBN) model is established to present the failure scenario of string, which considers the synergistic of erosion and corrosion. Thus, the real-time failure probabilities of string due to the coupling of erosion and corrosion are estimated. Subsequently, a DBN model incorporating the mathematical synergistic relationship of erosion and corrosion is developed to estimate the degradation rate and failure time of string. The approach is illustrated by a case study. It can be found that it can be an useful tool to guide safety management of UCAES string.

Keywords: UCAES; String; Erosion-corrosion degradation; Remaining life; DBN (search for similar items in EconPapers)
Date: 2025
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Persistent link: https://EconPapers.repec.org/RePEc:eee:reensy:v:261:y:2025:i:c:s0951832025002716

DOI: 10.1016/j.ress.2025.111070

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