Recent Progress on Thermal Energy Storage for Coal-Fired Power Plant  

作　　者：WANG Wei ZHANG Jianyuan GU Yi LUO Qing ZHOU Guiqing LI Ang LU Guozhong MA Tingshan ZHAO Yuanzhu CHANG Yiming XUE Zhaonan 

机构地区：[1]Xi'an thermal power research institute CO.,LTD.,Xi'an 710054,China [2]State grid Liaoning electric power supply CO.,LTD.,Shenyang 110004,China [3]GD power Dalian Zhuanghe power generation CO.,LTD.,Zhuanghe 116431,China

出　　处：《Journal of Thermal Science》2024年第6期2138-2150,共13页热科学学报（英文版）

基　　金：funded by National Key R&D Program of China,grant number 2019YFB1505400 and 2022YFB2405205.

摘　　要：With countries proposing the goal of carbon neutrality,the clean transformation of energy structure has become a hot and trendy issue internationally.Renewable energy generation will account for the main proportion,but it also leads to the problem of unstable electricity supply.At present,large-scale energy storage technology is not yet mature.Improving the flexibility of coal-fired power plants to suppress the instability of renewable energy generation is a feasible path.Thermal energy storage is a feasible technology to improve the flexibility of coal-fired power plants.This article provides a review of the research on the flexibility transformation of coal-fired power plants based on heat storage technology,mainly including medium to low-temperature heat storage based on hot water tanks and high-temperature heat storage based on molten salt.The current technical difficulties are summarized,and future development prospects are presented.The combination of the thermal energy storage system and coal-fired power generation system is the foundation,and the control of the inclined temperature layer and the selection and development of molten salt are key issues.The authors hope that the research in this article can provide a reference for the flexibility transformation research of coal-fired power plants,and promote the application of heat storage foundation in specific coal-fired power plant transformation projects.

关 键 词：thermal energy storage coal-fired power station flexible regulation water tank heat storage mol saltheatstorage 

分 类 号：TM621[电气工程—电力系统及自动化]