综合智慧能源2026，Vol.48Issue(5)：64-73,10.DOI:10.3969/j.issn.2097-0706.2026.05.007
600MW凝汽式机组熔盐储热系统设计及经济性分析
Design and economic analysis of molten salt thermal storage system for 600 MW condensing unit
摘要
Abstract
To achieve deep peak shaving and flexible operation of thermal power units under the"dual carbon"goals and to enhance the grid adaptability of high-capacity pure condensing units,a coupled design and economic analysis of a molten salt heat storage system for a 600 MW condensing unit is conducted.The aim is to propose a technical retrofit scheme that balances peak-shaving capability and thermal economy.A thermodynamic system simulation model of the unit was established based on the EBSILON software,and its accuracy was verified.Two steam extraction and heat storage schemes were proposed.Scheme 1 extracted reheated steam,and scheme 2 extracted main steam.Under rated operating conditions,and based on a heat storage load of 90 MW,a coupled heat storage and release system model was established.A comparative analysis was carried out across five dimensions:peak-shaving capacity,overall plant heat efficiency,absolute electrical efficiency,system cycle efficiency,and engineering applicability.Combined with the peak-valley electricity price policy in Hebei Province,the average daily revenue and static investment payback period of the system were estimated.The simulation results showed that the peak-shaving capacities of scheme 1 and scheme 2 were 38.85 MW and 54.70 MW,respectively,and the system cycle efficiencies were 84.6%and 60.1%,respectively.Under typical peak-valley electricity prices,the average daily net revenues of scheme 1 and scheme 2 were 98 100 yuan and 70 500 yuan,respectively.The static investment payback periods were 2.08 years and 3.53 years,respectively.Scheme 1 demonstrated more excellent performance in terms of system cycle efficiency,absolute electrical efficiency,and economic performance.For the molten salt heat storage retrofit of high-capacity condensing units,the scheme extracting reheated steam ensured significant peak-shaving capability while possessing better thermal economic performance and a shorter investment payback period.With better comprehensive performance,it can be recommended as a technical route for the flexibility retrofit of similar units.关键词
凝汽式机组/灵活性改造/熔盐储热/仿真模拟/经济性分析Key words
condensing unit/flexibility retrofit/molten salt heat storage/simulation/economic analysis分类
能源科技引用本文复制引用
岳柏杨,耿士敏,程思远..600MW凝汽式机组熔盐储热系统设计及经济性分析[J].综合智慧能源,2026,48(5):64-73,10.基金项目
国家自然科学基金项目(52206224) （52206224）
河北省教育厅青年拔尖人才项目(BJK2024030) National Natural Science Foundation of China(52206224) （BJK2024030）
Youth Top-notch Talent Project of Hebei Provincial Department of Education(BJK2024030) （BJK2024030）
