A Study on the Possibility of Grid-Connected Application of Liquid Air Energy Storage System

다국어 초록 (Multilingual Abstract)

Various technical approaches for energy storage system (ESS) have drawn attention for securing stability in the power system, which is due to the increase of power consumption and renewable energy generation. Among them, liquid air energy storage (LAES) is a system that liquefies air using dump or renewable power, stores it, and supplies power by using it when necessary. It has the merits of large-capacity, long-cycle, and no site restriction. In this study, to examine the grid connection of LAES in the point of view of the technical performance of the ESS, various ESS applications and technical requirements in terms of capacity, discharge time, reaction time, etc. were investigated. Based on the investigation, the characteristics and application requirements of each storage technology were compared to evaluate the grid-connected application of LAES. Finally, several methods of grid-connected applications for LAES could be identified.