集成熔盐储能的燃煤机组多区间变负荷瞬态特性

王珠; 刘双白; 胡娱欧; 崔福博; 刘明; 严俊杰

doi:10.7652/xjtuxb202505002

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集成熔盐储能的燃煤机组多区间变负荷瞬态特性

专题　储能技术 | 更新时间：2025-08-26

- 集成熔盐储能的燃煤机组多区间变负荷瞬态特性
- Transient Performance of Coal-Fired Power Plant Integrated with Molten Salt Energy Storage System Under Variable Load Intervals
- 西安交通大学学报 2025年59卷第5期页码：12-22
- 作者机构：
  
  1.西安交通大学动力工程多相流国家重点实验室， 710049，西安
  2.华北电力科学研究院有限责任公司， 100045，北京
  3.国家电网有限公司华北分部， 100053，北京
- 作者简介：
  
  王珠（1995—），女，助理教授；
  严俊杰（通信作者），男，教授，博士生导师。
- 基金信息：
  
  国家自然科学基金资助项目(52406027);国家电网有限公司华北分部科技项目(SGNC0000FZJS2200179)
- DOI：10.7652/xjtuxb202505002
  中图分类号： TM621
- 收稿：2024-11-08，
  
  网络首发：2025-01-07，
  
  纸质出版：2025-05-10
- 稿件说明：
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王珠, 刘双白, 胡娱欧, 等. 集成熔盐储能的燃煤机组多区间变负荷瞬态特性[J]. 西安交通大学学报, 2025,59(5):12-22.

WANG Zhu, LIU Shuangbai, HU Yuou, et al. Transient Performance of Coal-Fired Power Plant Integrated with Molten Salt Energy Storage System Under Variable Load Intervals[J]. Journal of Xi’an Jiaotong University, 2025, 59(5): 12-22.
王珠, 刘双白, 胡娱欧, 等. 集成熔盐储能的燃煤机组多区间变负荷瞬态特性[J]. 西安交通大学学报, 2025,59(5):12-22. DOI： 10.7652/xjtuxb202505002.

WANG Zhu, LIU Shuangbai, HU Yuou, et al. Transient Performance of Coal-Fired Power Plant Integrated with Molten Salt Energy Storage System Under Variable Load Intervals[J]. Journal of Xi’an Jiaotong University, 2025, 59(5): 12-22. DOI： 10.7652/xjtuxb202505002.

摘要

熔盐储能与燃煤机组的集成系统在多区间变负荷下的瞬态特性不明是制约系统灵活高效运行的关键问题，为了阐明集成系统在多区间变负荷瞬态过程中的灵活性提升潜力与能耗特性，采用重构负荷指令的控制策略进行集成系统的升、降负荷过程，随后分析了不同负荷区间运行时集成系统的变负荷性能，获得了集成系统的最大变负荷速率与系统能效。研究结果表明：在某660 MW燃煤机组中，高、低负荷区间下集成系统的最大降负荷速率均可提升至7.0% min

-1

，此时蒸汽分流比分别为0.5、0.6；高负

荷区间运行时集成系统的平均煤耗率比低负荷区间低7.0 g·（kW·h）

-1

以上；高负荷区间升/降负荷时集成系统煤耗率降幅/增幅大于低负荷区间，约为1.0 g·（kW·h）

-1

；高负荷区间运行时集成系统的往返平均煤耗率低于低负荷区间，约为7.0 g·（kW·h）

-1

。满足变负荷速率要求的前提下，为降低集成系统煤耗率，应选择较小的低压缸入口蒸汽分流比与较大的凝结水分流比。获得的集成熔盐储能的燃煤机组变负荷性能为集成系统的灵活高效运行提供了参考。

Abstract

The transient performance of the system integrating coal-fired power plant with the molten salt energy storage system are unknown under variable load intervals and this is the key issue that constrains the flexible and efficient operation of the system. In order to identify the flexibility enhancement potential and energy consumption characteristics of the integrated system during the transient process under variable load intervals

the control strategy by reconfiguring load command was adopted to complete the load down and up processes of the integrated system. In addition

the variable load performance of the coal-fired power plant with the molten salt energy storage system was analyzed when the plant is operating under variable load intervals to obtain the maximum variable load rate and system energy efficiency of the integrated system. The results show that: Taking 660 MW coal-fired power plant as a case

the maximum load down rate of the integrated system under high and low load intervals can be increased to 7.0% min

-1

at which time the steam diversion ratio was 0.5 and 0.6

respectively. The average coal consumption rate of the integrated system during the operation in high load intervals is lower than that in low load intervals by more than 7.0 g·(kW·h)

-1

. The decrease/increase of coal consumption rate of the integrated system during the high load interval is larger than that of the low load interval

about 1.0 g·(kW·h)

-1

. The round-trip average coal consumption rate of the integrated system in the high load interval is about 7.0 g·(kW·h)

-1

lower than that in the low load interval. With the variable load rate requirements met

a smaller

low-pressure cylinder inlet steam diversion ratio and a larger condensate diversion ratio should be selected to reduce the coal consumption rate. The obtained variable load performance of the coal-fired power plant integrated with molten salt storage system can provide some technical guidance for efficient operation of the integrated system.

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