Research on the Construction Process Scheme of Artificial Chamber of Compressed Air Energy Storage Power Station

Abstract

The introduction of a new power system centered on renewable energy presents significant opportunities for compressed air energy storage (CAES), which boasts noteworthy advantages such as scalability, cost-effectiveness, longevity, and rapid construction timelines. However, a considerable constraint on the advancement of affordable air energy storage is the need for substantial gas storage capacity. For instance, a single compressed air project with a capacity of 300 MW over 5 hours necessitates more than 500,000 cubic meters of gas storage space. Due to the extensive gas storage requirements of large-scale CAES facilities, surface storage solutions are typically only viable for smaller power stations and are largely confined to experimental phases. Furthermore, the capital investment for these above-ground facilities tends to be higher than that for underground alternatives. Consequently, to optimize both economic viability and storage capacity, underground gas storage solutions are predominantly utilized in projects currently under development or in the planning stage. Gas storage infrastructure represents a crucial component of a CAES power station, serving as a key determinant for both construction costs and site selection as well as being pivotal to the technical efficiency and safety of energy operations. This paper integrates hydropower and extraction construction methodologies, thoroughly evaluates the economic implications and periodic nature of construction, and analyzes the strengths and weaknesses of various construction techniques in relation to specific projects. This analysis aims to facilitate and inform the large-scale implementation of forthcoming compressed air energy storage initiatives.