高温熔融盐储热辅助热电联产机组灵活调峰研究

张鹏; 廖海燕; 周兆伦; 王翔; 卓建坤; 姚强

doi:10.13568/j.cnki.651094.651316.2025.04.01.0002

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高温熔融盐储热辅助热电联产机组灵活调峰研究

智慧工程与先进制造专题 | 更新时间：2026-01-22

- 高温熔融盐储热辅助热电联产机组灵活调峰研究
- 高温熔融盐储热辅助热电联产机组灵活调峰研究
- 新疆大学学报（自然科学版中英文） 2025年42卷第4期页码：496-505
- 作者机构：
  
  1. 新疆大学电气工程学院
  2. 清华大学热科学与动力工程教育部重点实验室
  3. 中国科学院过程工程研究所介科学与工程全国重点实验室
- 作者简介：
- 基金信息：
  
  国家重点研发计划“多能协同能质优化匹配方法及系统稳定提效技术”（2023YFB4102901）;新疆维吾尔自治区天山英才计划“新疆碳中和能源科学与技术研究”（2022TSYCLJ0001）
- DOI：10.13568/j.cnki.651094.651316.2025.04.01.0002
  中图分类号： TM621
- 纸质出版：2025
- 稿件说明：
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[1]张鹏,廖海燕,周兆伦,等.高温熔融盐储热辅助热电联产机组灵活调峰研究[J].新疆大学学报(自然科学版中英文),2025,42(04):496-505.
[1]张鹏,廖海燕,周兆伦,等.高温熔融盐储热辅助热电联产机组灵活调峰研究[J].新疆大学学报(自然科学版中英文),2025,42(04):496-505. DOI： 10.13568/j.cnki.651094.651316.2025.04.01.0002.

DOI：10.13568/j.cnki.651094.651316.2025.04.01.0002.

摘要

为解决燃煤热电联产机组供暖季热负荷与电负荷不匹配，以及供暖季和非供暖季运行差异等问题，提出了基于双向换热系统的熔盐储热系统．供暖季采用“主蒸汽、再热蒸汽储热-给水释热”模式提升调峰能力并满足供暖热需求，非供暖季通过“主蒸汽、再热蒸汽储热-给水、凝结水释热”模式提高系统热效率．基于仿真模型分析表明，双向换热系统可实现储/释热模式的灵活切换，供暖季在供热负荷为90 MWth时机组最小负荷可降低至98.76 MWe(28.2%THA)，非供暖季主蒸汽储热比例为80%时机组最小负荷可降低至106 MWe(30.3%THA)．经济性评估显示，供暖季采用双向换热系统较传统熔盐方案设备成本降低了12.3%．研究验证了双向储-释热换热器在机组全周期经济性与能源效率中的提升作用，为火电机组低碳转型提供技术支撑．

Abstract

To address the mismatch between thermal and electrical loads in coal-fired combined heat and power generation units during heating seasons

and the operational discrepancies between heating/non-heating periods

this study proposes a molten salt thermal energy storage system with a bidirectional heat exchange configuration. During heating seasons

the system operates in “main/reheat steam charging-feedwater discharging” mode to enhance operational flexibility and satisfy district heating demands

and in non-heating seasons

it adopts“main/reheat steam charging-feedwater/condensate cooperative discharging” mode to improve thermal efficiency.Simulation results demonstrate that the bidirectional heat exchange architecture enables flexible switching between charging/discharging modes

achieving a minimum electrical load of 98.76 MWe(28.2% of turbine heat acceptance(THA) rating) at 90 MWth heating demand during heating seasons

and 106 MWe(30.3% THA) with 80% main steam extraction ratio in non-heating seasons. Economic evaluation reveals a 12.3% reduction in capital costs compared to conventional molten salt systems during heating operation. The research validates the effectiveness of bidirectional thermal storage-exchanger configurations in enhancing whole-lifecycle economic performance and energy efficiency

providing technical support for low-carbon transition of thermal power units through operational flexibility improvement and energy cascade utilization optimization.

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references

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