Dynamic characteristics analysis of power-to-heat molten salt heat storage and power generation system

户雯婷; 刘明; 张顺奇; 韩伟; 严俊杰

doi:10.19666/j.rlfd.202412244

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Dynamic characteristics analysis of power-to-heat molten salt heat storage and power generation system

Thermal Power Generation Vol. 54, Issue 9, Pages: 25-34(2025)

更新时间：2026-08-11

- Dynamic characteristics analysis of power-to-heat molten salt heat storage and power generation system
- 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
  2. 西安热工研究院有限公司
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.202412244
  CLC： TM611
- Published：2025
- 稿件说明：
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[1]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],2025,54(09):25-34.
[1]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],2025,54(09):25-34. DOI： 10.19666/j.rlfd.202412244.

DOI：10.19666/j.rlfd.202412244.

摘要

针对电制热熔盐储热发电系统的动态特性展开研究，建立了蒸汽发生系统、发电系统的动态模型，验证了模型的可靠性。分析了熔盐工质流量、温度和蒸汽阀门开度扰动下的动态特性，并研究该系统在100%THA—50%THA负荷区间的降负荷瞬态过程性能。研究结果表明，在熔盐温度扰动下，主蒸汽温度和再热蒸汽温度快速响应，且明显快于机组负荷和主蒸汽压力响应；熔盐流量扰动对机组负荷和主蒸汽压力具有显著影响，熔盐流量增加15%时，机组负荷增加12.44%，主蒸汽压力增大1.18 MPa；主蒸汽调节阀开度则控制着主蒸汽压力和负荷波动。在温度偏差的限制条件下，100%THA—50%THA负荷区间的最大降负荷速率达14%P

/min。

Abstract

The dynamic models of steam generation system and power generation system are developed to study the dynamic characteristics of power-to-heat molten salt heat storage and power generation system

and the reliability of the models is validated. The dynamic characteristics of the system are analyzed for the disturbance of molten salt work temperature

flowrate and steam valve opening. Moreover

the performance of the system in the load reduction transient process is investigated in the 100%THA～50%THA load interval. The results show that

the main steam temperature and reheat steam temperature respond quickly to the molten salt temperature disturbance

and their response is

obviously faster than that of the unit load and main steam pressure. The molten salt flowrate disturbance has a significant effect on the unit load and main steam pressure

and the unit load increases by 12.44%and the main steam pressure increases by 1.18 MPa with 15% increase in molten salt flowrate. The main steam valve opening controls the main steam pressure and load fluctuation. With the addition of the control system

the maximum load reduction rate of the unit in the 100%THA～50%THA load interval is 14%P

/min with the limiting condition of temperature deviation.

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references

电力规划设计总院.中国电力发展报告2024[M].北京:人民日报出版社, 2024:1.China Electric Power Planning&Engineering Institute.China electric power development report 2024[M].Beijing:People’s Daily Press, 2024:1.

电力规划设计总院.中国能源发展报告2024[M].北京:人民日报出版社, 2024:1.China Electric Power Planning&Engineering Institute.China energy development report 2024[M]. Beijing:People’s Daily Press, 2024:1.

XU J, LIU W H, WANG Z P, et al. Comparative investigation on the thermodynamic performance of coalfired power plant integrating with the molten salt thermal storage system[J]. Journal of Energy Storage, 2024, 89:111738.

LEPIKSAAR K, MA?ATIN V, LAT??OV E, et al.Improving CHP flexibility by integrating thermal energy storage and power-to-heat technologies into the energy system[J]. Smart Energy, 2021, 2:100022.

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.Thermodynamic analysis on the coal-fired power plant integrated with power-to-heat molten salt thermal energy storage system[J]. Journal of Engineering Thermophysics,2023, 44(11):2999-3007.

HE Y, GUO S, ZHOU J X, et al. The many-objective optimal design of renewable energy cogeneration system[J]. Energy, 2021, 234:121244.

YAN Z, ZHANG Y M, LIANG R Q, et al. An allocative method of hybrid electrical and thermal energy storage capacity for load shifting based on seasonal difference in district energy planning[J]. Energy, 2020, 207:118139.

BENALCAZAR P. Optimal sizing of thermal energy storage systems for CHP plants considering specific investment costs:a case study[J]. Energy, 2021, 234:121323.

马汀山,张国龙,居文平,等.辅助燃煤机组ACG调节的熔盐电加热器动态特性研究[J].热力发电, 2024,53(4):84-91.MA Tingshan, ZHANG Guolong, JU Wenping, et al.Dynamic performance of molten salt electric heater with AGC regulation for auxiliary coal-fired units[J]. Thermal Power Generation, 2024, 53(4):84-91.

斯楞戈,徐二树,汤建方,等. 50 MW槽式太阳能光热电站储热系统建模[J].能源与节能, 2022(5):1-8.SI Lengge, XU Ershu, TANG Jianfang, et al. Modeling of heat storage system in 50 MW trough solar thermal power plant[J]. Energy and Energy Conservation, 2022(5):1-8.

YAO L X, XIAO X Y, WANG Y, et al. Dynamic modeling and hierarchical control of a concentrated solar power plant with direct molten salt storage[J]. Energy, 2022,252:123999.

J IANG K J, WANG Q H, LIU H, et al. Dynamic simulation and control strategy development of molten salt steam generation system for coal-fired power plant flexible retrofit[J]. Case Studies in Thermal Engineering,2024, 63:105212.

王然.熔盐式蒸汽发生器流动与传热特性的数值研究[D].太原:太原理工大学, 2019:12-30.WANG Ran. Numerical study on flow and heat transfer characteristics of molten salt steam generator[D].Taiyuan:Taiyuan University of Technology, 2019:19-30.

ZHANG S Q, LIU M, ZHAO Y L, et al. Dynamic simulation and performance analysis of a parabolic trough concentrated solar power plant using molten salt during the start-up process[J]. Renewable Energy, 2021, 179:1458-1471.

ZHANG K Z, ZHAO Y L, LIU M, et al. Flexibility enhancement versus thermal efficiency of coal-fired power units during the condensate throttling processes[J].Energy, 2021, 218:119534.

LI X L, XU E S, MA L R, et al. Modeling and dynamic simulation of a steam generation system for a parabolic trough solar power plant[J]. Renewable Energy, 2019,132:998-1017.

宁涛,张瑞山,李根,等.纯凝结段回热加热器动态特性研究[J].工程热物理学报, 2013, 34(4):676-679.NING Tao, ZHANG Ruishan, LI Gen, et al. The dynamic behavior research on feedwater heater with condensation zone[J]. Journal of Engineering Thermophysics, 2013,34(4):676-679.

赵永亮,刁保圣,韩翔,等. 660 MW超临界燃煤机组变负荷过程动态特性的仿真研究[J].中国电力, 2019,52(5), 13-20.ZHAO Yongliang, DIAO Baosheng, HAN Xiang, et al.Simulation study on the dynamic characteristics of a660 MW supercritical coal-fired power unit during AGC processes[J]. Electric Power, 2019, 52(5):13-20.

高湘彬,寥超豪,李根.线性菲涅尔式光热电站控制策略及变负荷速率研究[J].热力发电, 2024, 53(5):47-55.GAO Xiangbin, LIAO Chaohao, LI Gen. Study on control strategy and variable load rate of linear Fresnel solar power station[J]. Thermal Power Generation, 2024, 53(5):47-55.

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