电力科技与环保2026，Vol.42Issue(1)：90-103,14.DOI:10.19944/j.eptep.1674-8069.2026.01.010
超超临界二次再热机组汽温调节与灵活调峰技术研究进展
Research progress on steam temperature regulation and flexible peak shaving technology of ultra-supercritical double reheat units
摘要
Abstract
[Objective]The carbon peaking and carbon neutrality goals present thermal power units with challenges in deep peak regulation and clean energy transition.This study addresses critical technical issues in ultra-supercritical double reheat technology,particularly steam temperature regulation and operational flexibility during low-load operations.[Methods]A comprehensive review of double reheat technology development was conducted,analyzing heat absorption characteristics and control method effectiveness.Performance variations in steam temperature,combustion stability,environmental impact,and economic efficiency during deep peak regulation were systematically examined.[Results]Results demonstrate:(1)The heat absorption ratio of reheat steam in double-reheat boilers increases to approximately 28%,raising the difficulty of steam temperature control.Combined control strategies,such as burner tilt,flue gas dampers,and flue gas recirculation,have become the mainstream technical approach.(2)During operation below 50%load,the heat absorption ratio of the reheater decreases to about 23%,and the reheat steam temperature falls more than 20℃below the design value,leading to reduced economic performance.Optimization measures,including pulverized coal fineness adjustment,operating oxygen content regulation,and air distribution mode improvement,can enhance low-load performance.(3)Coupling double-reheat units with thermal energy storage technology can effectively increase the load regulation rate and deep peak shaving capability,potentially lowering the minimum load to 18%.[Conclusion]Despite mature large-scale implementation,ultra-supercritical double reheat technology requires continued optimization for low-load operation and enhanced flexibility.Advanced control strategies and operational improvements are essential for supporting renewable energy accommodation and maintaining grid stability.关键词
超超临界/二次再热/汽温调节/深度调峰/灵活性Key words
ultra-supercritical/double reheat/steam temperature regulation/deep peak shaving/flexibility分类
能源科技引用本文复制引用
马凯,岳克伟,何陆灿,黄林滨,陈国庆,张海峰..超超临界二次再热机组汽温调节与灵活调峰技术研究进展[J].电力科技与环保,2026,42(1):90-103,14.基金项目
国家自然科学基金项目(52176104) （52176104）
低碳智能燃煤发电与超净排放全国重点实验室开放课题项目(D2023FK084) （D2023FK084）
国家能源集团科技创新项目(GJNY-23-68) （GJNY-23-68）
