化工学报2026，Vol.77Issue(4)：2147-2159,13.DOI:10.11949/0438-1157.20251024
燃煤发电耦合压缩S-CO2储能系统构建与热力学分析
Construction and thermodynamic analysis of a coupled compression S-CO2 energy storage system for coal-fired power generation
摘要
Abstract
With the in-depth advancement of China's"dual carbon"strategy,the proportion of intermittent renewable energy generation such as wind power and photovoltaic power is constantly increasing,leading to a sharp rise in the demand for peak shaving and frequency regulation in the power grid.To significantly enhance the operational flexibility of traditional coal-fired power units,this study proposes a scheme for coupling a compressed supercritical carbon dioxide(S-CO2)energy storage system with coal-fired units.By establishing a thermodynamic model of the system and based on the principle of exergy analysis,the influence of key operating parameters on the distribution of irreversible losses in the overall system and its components is deeply investigated.The research results show that the system can achieve a round-trip efficiency of 68.12％,with efficiency rates of 56.18％,57.84％,and 62.94％under three typical operating modes,respectively.The S-CO2 working fluid flow rate,compressor inlet pressure,and compressor efficiency are the key parameters that most significantly affect the system's efficiency.The research findings can lay a theoretical foundation for the future construction and application of S-CO 2 energy storage cycle engineering.关键词
燃煤机组/储能/超临界二氧化碳/(火用)分析Key words
coal-fired power unit/energy storage/supercritical carbon dioxide/exergy analysis分类
能源科技引用本文复制引用
王迪,李胜杰,崔颖晗,孙灵芳,李晓莉..燃煤发电耦合压缩S-CO2储能系统构建与热力学分析[J].化工学报,2026,77(4):2147-2159,13.基金项目
国家自然科学基金项目(52306004) （52306004）
