发电系统是新能源发电的热点研究方向之一，本文系统地论述了该发电系统的原理和特点、发展历程、前沿技术和应用前景，指出先进密封技术、高温高压回热器设计技术和闭式循环系统控制技术等为目前存在的技术难点，并从循环机理分析、系统总体设计和关键部件设计等方面对未来发展趋势进行展望。

Supercritical carbon dioxide（SCO2）power generation system is one of the key research directions in the new energy generation area.The principle and characteristics,development history and advanced technology,application prospect,and the future development trend of SCO2 power generation system are discussed in this paper.Three key technologies are analyzed,including advanced sealing technology,high temperature and high pressure regenerator design technology and closed cycle system control technology.In view of the difficulties,the future development trend is projected and summarized from the aspects of cycle mechanism analysis,system overall design and key components design.This review is intended to provide technical support for the future development of the technology in the global power generation field.

TK123

中央高校基本科研业务费资助项目（531107051214）