综合智慧能源 ›› 2026, Vol. 48 ›› Issue (5): 83-94.doi: 10.3969/j.issn.2097-0706.2026.05.009

• 综合能源系统分析与评估 • 上一篇    

基于风光上网量的抽汽-熔盐储热光煤耦合调峰系统运行策略经济性分析

崔雅茹a,b(), 鹿院卫a,b,*(), 王子瑄a,b(), 杨涵a,b(), 吴玉庭a,b()   

  1. 北京工业大学 a.传热与能源利用北京市重点实验室;b.国家能源用户侧储能创新研发中心北京 100124
  • 收稿日期:2026-01-09 修回日期:2026-02-26 出版日期:2026-04-14
  • 通讯作者: *鹿院卫(1971),女,教授,博士,从事可再生能源利用方面的研究,luyuanwei@bjut.edu.cn
  • 作者简介:崔雅茹(2001),女,硕士生,从事熔盐储热提高火电厂灵活性方面的研究,cuiyaru@emails.bjut.edu.cn
    王子瑄(2001),男,硕士生,从事混合熔盐热物性计算、螺旋缠绕管换热器多目标优化设计等方面的研究,zixuanwang@emails.bjut.edu.cn
    杨涵(1991),女,讲师,博士,从事可再生能源利用方面的研究,yanghan@bjut.edu.cn
    吴玉庭(1970),男,研究员,博士,从事可再生能源利用方面的研究,wuyuting@bjut.edu.cn
  • 基金资助:
    国家重点研发计划项目(2022YFB4202402)

Economic efficiency analysis of operation strategies for the solar-coal peak-shaving system with steam extraction and molten salt thermal energy storage based on wind and solar power integration amount

CUI Yarua,b(), LU Yuanweia,b,*(), WANG Zixuana,b(), YANG Hana,b(), WU Yutinga,b()   

  1. a.Beijing Key Laboratory of Heat Transfer and Energy Conversion;b.National User-Side Energy Storage Innovation Research and Development Center,Beijing University of TechnologyBeijing 100124, China
  • Received:2026-01-09 Revised:2026-02-26 Published:2026-04-14
  • Supported by:
    National Key R&D Program of China(2022YFB4202402)

摘要:

为解决高比例风光并网背景下燃煤机组调峰灵活性与经济性的协同难题,以600 MW亚临界燃煤机组为研究载体,提出基于抽汽-熔盐储热的光煤耦合深度调峰系统。针对现有研究未充分考虑风光上网量与调峰系统运行策略相互影响的局限,构建了包含初始投资、运行维护及燃煤成本的全生命周期成本体系,并以净现值、动态投资回收期、平准化度电成本及风光弃电量为评价指标的经济模型。结合风光出力曲线与日负荷曲线,设计7种差异化运行策略,通过熵权-优劣解距离法实现多维度性能的综合优选。研究结果表明:策略1为综合性能最优方案,凭借精准匹配风光高出力-负荷低谷的储热时序,实现净现值1.807 1×109元、动态投资回收期7.424 a及风光弃电量2 090 MW·h的三重优势,其系统输出功率与日负荷曲线呈良好跟随性,风光消纳比例为72.54%。

关键词: 熔盐储热, 光煤耦合, 深度调峰, 风光消纳, 运行策略, 熵权-优劣解距离法, 经济性

Abstract:

To solve the problem of coordinating peak-shaving flexibility and economic efficiency of coal-fired units under the background of high-proportion wind-solar power integration, 600 MW subcritical coal-fired units were taken as the research object, and a deep peak-shaving system with solar-coal coupling based on steam extraction and molten salt thermal energy storage was proposed. In view of the limitation that existing research fails to fully consider the interaction between wind and solar power integration amount and the operation strategies for the peak-shaving system, a life-cycle cost system covering initial investment, operation and maintenance, and coal cost was established. Additionally, an economic model was established with net present value, dynamic investment payback period, levelized cost of electricity, and wind and solar power curtailment as evaluation indicators. Combined with wind and solar output curves and daily load curves, seven differentiated operation strategies were designed, and their multi-dimensional performance was comprehensively optimized and selected using the entropy weight-TOPSIS method. The results showed that strategy 1 was optimal for comprehensive performance. By precisely matching the thermal energy storage timing of high wind and solar power output with low load periods, strategy 1 achieved the triple advantages of a net present value of 1.807 1×109 yuan, a dynamic investment payback period of 7.424 a, and wind and solar power curtailment of 2 090 MW·h. The system output power closely followed the daily load curves, and the wind and solar power integration ratio reached 72.54%.

Key words: molten salt thermal energy storage, solar-coal coupling, deep peak shaving, wind and solar power integration, operation strategies, entropy weight-TOPSIS method, economic efficiency

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