丁煊涛,范庆伟

• 1:北方联合电力有限责任公司
• 2:西安热工研究院有限公司

摘要(Abstract)：

【目的】在全球能源结构转型与“双碳”战略目标驱动下，提升火电机组灵活性已成为增强电网新能源消纳能力的关键路径。为提升火电机组调频灵活性并解决熔盐-蒸汽换热过程中的夹点问题，提出一种与亚临界机组耦合的三罐式梯级熔盐储热集成方案。【方法】基于EBSILON平台构建了330 MW机组稳态模型，并嵌入高-中-低温熔盐储释热回路，通过主蒸汽及给水旁路实现锅炉-汽轮机部分解耦。【结果】仿真结果表明：该系统循环电效率在100%THA工况下可达63.51%；集成系统在各工况的热备用工作状态下热耗率增幅仅约1%，而在40%THA、5%Pe调频深度下为13.2%；调频引发的煤耗增量随调频深度加大呈指数增长，为界定经济性运行死区提供了依据。【结论】该梯级储热结构在维持蒸汽品位的同时，显著提升了机组负荷响应速率与调频能力，为高比例新能源电力系统中火电机组的灵活性改造提供了理论支撑与工程设计范式。

关键词(KeyWords)： 熔盐储热系统;灵活性改造;储能;换热夹点;EBSILON建模仿真

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 丁煊涛,范庆伟

DOI: 10.19666/j.rlfd.202508050

参考文献(References)：

• [1]国家能源局.国家能源局发布2024年全国电力工业统计数据[EB/OL].(2025-01-21)[2025-08-22]. https://www.nea.gov.cn/20250121/097bfd7c1cd3498897639857d86d5dac/c.html.National Energy Administration. The National Energy Administration releases statistical data on the national power industry for 2024[EB/OL].(2025-01-21)[2025-08-20]. https://www.nea.gov.cn/20250121/097bfd7c1cd3498897639857d86d5dac/c.html.
• [2]中国电力企业联合会. 2024—2025年度全国电力供需形势分析预测报告[EB/OL].(2025-01-26)[2025-08-20].http://www.chinapower.com.cn/zx/zxbg/20250205/275937.html.China Electricity Council. Analysis and forecast report on national power supply and demand for 2024—2025[EB/OL].(2025-01-26)[2025-08-20]. http://www.chinapower.com.cn/zx/zxbg/20250205/275937.html.
• [3]国家统计局. 2024年12月份能源生产情况[EB/OL].(2025-01-17)[2025-08-20]. https://www.stats.gov.cn/sj/zxfb/202501/t20250117_1958326.html.National Bureau of Statistics. Energy production in December 2024[EB/OL].(2025-01-17)[2025-08-20].https://www.stats.gov.cn/sj/zxfb/202501/t20250117_1958326.html.
• [4]中华人民共和国国民经济和社会发展第十四个五年规划和2035年远景目标纲要[N].人民日报, 2021-03-13(1).Outline of the 14th Five-Year Plan for national economic and social development and long-range objectives through the year 2035 of the People’s Republic of China[N].People’s Daily, 2021-03-13(1).
• [5]刘云.我国能源电力发展及火电机组灵活性改造综述[J].洁净煤技术, 2023, 29(增刊2):319-27.LIU Yun. A summary of the development of china's energy and electricity and the flexibility improvement of fossil-fired power units[J]. Clean Coal Technology, 2023,29(Suppl.2):319-327.
• [6]ROPER R, HARKEMA M, SABHARWALL P, et al.Molten salt for advanced energy applications:a review[J].Annals of Nuclear Energy, 2022, 169:108924.
• [7]崔吉祥,孟凡星,孙耀芹,等.基于Cite Space与VOSviewer的熔盐储能研究可视化分析[J].节能,2024, 43(5):103-106.CUI Jixiang, MENG Fanxing, SUN Yaoqin, et al.Visualization analysis of molten salt energy storage research based on cite space and VOSviewer[J]. Energy Conservation, 2024, 43(5):103-106.
• [8]刘金恺,鹿院卫,魏海姣,等.熔盐储热辅助燃煤机组调峰系统设计及性能对比[J].热力发电, 2023, 52(2):111-118.LIU Jinkai, LU Yuanwei, WEI Haijiao, et al. Design and performance comparison of molten salt thermal energy storage assisted peak shaving system for fossil-fired power units[J]. Thermal Power Generation, 2023, 52(2):111-118.
• [9]苗林,刘明,张可臻,等.集成电制热熔盐储热的燃煤发电系统热力性能研究[J].工程热物理学报, 2023,44(11):2999-3007.MIAO Lin, LIU Ming, ZHANG Kezhen, et al. Research on thermodynamic performance of fossil-fired power generation system integrated with electrothermal molten salt thermal energy storage[J]. Journal of Engineering Thermophysics, 2023, 44(11):2999-3007.
• [10]苗林,刘明,严俊杰.燃煤机组集成熔盐储热系统释热过程的灵活性提升潜力及能效分析[J].中国电机工程学报, 2025, 45(15):5964-5976.MIAO Lin, LIU Ming, YAN Junjie. Potential for flexibility improvement and energy efficiency analysis of the heat release process in fossil-fired power units integrated with molten salt thermal energy storage system[J]. Proceedings of the CSEE, 2025, 45(15):5964-5976.
• [11]张祝,陈国庆,周小明,等. 670 MW燃煤机组耦合熔盐储能系统方案设计及性能分析[J].热力发电, 2024,53(3):89-98.ZHANG Zhu, CHEN Guoqing, ZHOU Xiaoming, et al.Design and performance analysis of 670 MW fossil-fired power unit coupled with molten salt energy storage system[J]. Thermal Power Generation, 2024, 53(3):89-98.
• [12]马汀山,王伟,王东晔,等.基于熔盐储热辅助煤电机组深度调峰的系统设计及容量计算方法研究[J].热力发电, 2023, 52(7):113-118.MA Tingshan, WANG Wei, WANG Dongye, et al.Research on system design and capacity calculation method of deep peak shaving for coal-fired power units assisted by molten salt thermal energy storage[J]. Thermal Power Generation, 2023, 52(7):113-118.
• [13]彭家辉,倪永中,王元良,等.基于熔盐储热的燃煤机组调峰可行性分析[J].热力发电, 2024, 53(1):99-106.PENG Jiahui, NI Yongzhong, WANG Yuanliang, et al.Feasibility analysis of peak shaving for coal-fired power units based on molten salt thermal energy storage[J].Thermal Power Generation, 2024, 53(1):99-106.
• [14]易自砚,李红星,何邵华,等.太阳能热发电站高温熔盐罐基础设计关键参数研究[J].太阳能学报, 2025,46(2):464-469.YI Ziyan, LI Hongxing, HE Shaohua, et al. Key parameters for foundation design of high-temperature molten-salt storage tanks in solar thermal power plants[J].Acta Energiae Solaris Sinica, 2025, 46(2):464-469.
• [15]ISMAIL I, WIDODO Y I, RAHMAN R A. Charge assessment for nitrate-based salt as a phase change material for a medium-temperature latent storage tank[J].Latvian Journal of Physics and Technical Sciences, 2024,61(1):52-61.
• [16]LI N, WANG Y, LIU Q, et al. Evaluation of thermalphysical properties of novel multicomponent molten nitrate salts for heat transfer and storage[J]. Energies,2022, 15(18):6591.
• [17]巩志强,韩悦,徐明新,等.煤电耦合熔盐储热调峰的技术经济性研究[J].洁净煤技术, 2025, 31(8):200-209.GONG Zhiqiang, HAN Yue, XU Mingxin, et al. Technical and economic research on peak shaving of coal-fired power coupled with molten salt thermal energy storage[J].Clean Coal Technology, 2025, 31(8):200-209.
• [18]李洪波,王顺,景锐,等.熔盐储热系统对火电机组热经济性和调峰性能的影响[J].西安工程大学学报,2024, 38(5):93-101.LI Hongbo, WANG Shun, JING Rui, et al. Influence of molten salt thermal energy storage system on thermal economy and peak shaving performance of thermal power units[J]. Journal of Xi'an Polytechnic University, 2024,38(5):93-101.
• [19]MA T S, LI Z K, LV K, et al. Design and performance analysis of deep peak shaving scheme for thermal power units based on high-temperature molten salt heat storage system[J]. Energy, 2024, 288:129557.
• [20]REN B, ZHU C, LI B, et al. Thermal-mechanical coupling characteristics of large-scale molten salt storage tanks under stable operating conditions with varying liquid levels[J]. Journal of Energy Storage, 2024, 100:113697.
• [21]董新宇,张舒蕾,张宇轩,等.熔盐横向冲刷管内汽-液两相流传热特性实验研究[J].太阳能学报, 2023,44(7):241-247.DONG Xinyu, ZHANG Shulei, ZHANG Yuxuan, et al.Experimental study on heat transfer characteristics of steam-liquid two-phase flow transversely flushed by molten salt in tubes[J]. Acta Energiae Solaris Sinica, 2023,44(7):241-247.
• [22]户雯婷,刘明,张顺奇,等.电制热熔盐储热发电系统的动态特性分析[J].热力发电, 2025, 54(9):25-34.HU Wenting, LIU Ming, ZHANG Shunqi, et al. Dynamic characteristics analysis of electro-thermal molten-salt heat-storage power generation system[J]. Thermal Power Generation, 2025, 54(9):25-34.
• [23]范庆伟,居文平,黄嘉驷,等.基于储热过程的工业供汽机组热电解耦研究[J].汽轮机技术, 2019, 61(3):221-223.FAN Qingwei, JU Wenping, HUANG Jiasi, et al. Research on decoupling of heat and power of industrial steam supply unit based on heat storage process[J]. Turbine Technology, 2019, 61(3):221-223.
• [24]宋晓辉,韩伟,王兴,等.基于高温熔盐储热系统的火电机组深度调峰方案对比及分析[J].热能动力工程,2023, 38(11):63-74.SONG Xiaohui, HAN Wei, WANG Xing, et al.Comparison and analysis of deep peak shaving schemes for fossil-fired power units based on high-temperature molten salt thermal energy storage system[J]. Thermal Power Engineering, 2023, 38(11):63-74.
• [25]张婉颖,王建东,魏梦瑶,等.基于机组出力变化量与最大调节速率关系的自动发电控制指令优化调度[J].科学技术与工程, 2024, 24(1):238-244.ZHANG Wanying, WANG Jiandong, WEI Mengyao,et al. Optimal AGC dispatch based on the relationship between output variation and maximum regulation rate of generating units[J]. Science Technology and Engineering,2024, 24(1):238-244.
• [26]陈玉爽.高温熔盐及熔盐换热器传热特性的实验和模拟研究[D].上海:中国科学院大学, 2021:1.CHEN Yushuang. Experimental and numerical study on heat transfer characteristics of high-temperature molten salt and molten-salt heat exchangers[D]. University of Chinese Academy of Sciences, 2021:1.
• [27]全国电网运行与控制标准化技术委员会.并网电源一次调频技术规定及试验导则:GB/T 40595—2021[S].中国标准出版社, 2021:1.National Technical Committee on Power Grid Operation and Control. Technical rules and test guidelines for primary frequency regulation of grid-connected power sources:GB/T 40595—2021[S]. Beijing:China Standards Press, 2021:1.
• [28]陈羽飞,何永君,田晓鹏,等.熔盐储能火电机组自抗扰频率控制[J].热能动力工程, 2025, 40(1):94-102.CHEN Yufei, HE Yongjun, TIAN Xiaopeng, et al. Active Disturbance rejection frequency control of thermal power units with molten-salt thermal energy storage[J]. Journal of Engineering for Thermal Energy&Power, 2025, 40(1):94-102.
• [29]庞力平,张世刚,段立强.高温熔盐储能提高二次再热机组灵活性研究[J].中国电机工程学报, 2021,41(8):2682-2691.PANG Liping, ZHANG Shigang, DUAN Liqiang.Improving flexibility of double-reheat units using hightemperature molten-salt thermal energy storage[J].Proceedings of the CSEE, 2021, 41(8):2682-2691.
• [30]YOU F, LAN Q. Study on staged start-up mitigation strategies for water hammer in large-scale centrifugal pump systems based on one-dimensional and threedimensional coupled simulation[J]. Journal of Applied Fluid Mechanics, 2025, 18(7):1906-1922.
• [31]ALI M, ALKAABI A K, ADDAD Y. Numerical investigation of a vertical triplex-tube latent heat storage/exchanger to achieve flexible operation of nuclear power plants[J]. International Journal of Energy Research,2022, 46(3):2970-2987.
• [32]高彦洁,张斯文,景雪晖,等.燃煤机组灵活性改造成本及效益分析[J].锅炉技术, 2024, 55(5):65-71.GAO Yanjie, ZHANG Siwen, JING Xuehui, et al. Costbenefit analysis of flexibility retrofit for coal-fired power units[J]. Boiler Technology, 2024, 55(5):65-71.