Coupling method and thermal performance analysis for molten salt heat storage tower solar energy power station and thermal power unit

WANG Huijie; DONG Xuehui; ZAN Yongchao; YANG Jie; LUO Tianci; YU Jiao; HE Lun

doi:10.19666/j.rlfd.201812135

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Coupling method and thermal performance analysis for molten salt heat storage tower solar energy power station and thermal power unit

更新时间：2025-09-28

- Coupling method and thermal performance analysis for molten salt heat storage tower solar energy power station and thermal power unit
- Thermal Power Generation Vol. 48, Issue 7, Pages: 47-52(2019)
- 作者机构：
  
  华北电力大学能源动力与机械工程学院
- 作者简介：
- 基金信息：
- DOI：10.19666/j.rlfd.201812135
  CLC： TK284.1
- Published Online：10 July 2019，
  
  Published：2019
- 稿件说明：
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WANG Huijie, DONG Xuehui, ZAN Yongchao, et al. Coupling method and thermal performance analysis for molten salt heat storage tower solar energy power station and thermal power unit[J]. Thermal power generation, 2019, 48(7): 47-52.
DOI：

WANG Huijie, DONG Xuehui, ZAN Yongchao, et al. Coupling method and thermal performance analysis for molten salt heat storage tower solar energy power station and thermal power unit[J]. Thermal power generation, 2019, 48(7): 47-52. DOI： 10.19666/j.rlfd.201812135.

摘要

为提高塔式太阳能电站发电效率

同时降低火电机组煤耗

将配置熔盐储热装置的塔式太阳能光热系统耦合到常规燃煤机组中

并对耦合系统进行模拟仿真。研究表明:在锅炉75%THA工况基准下

太阳能光热系统可以承担5%～15%换热负荷

使燃煤机组在80%THA～90%THA负荷下运行

煤耗降低率由5.76%提高到15.54%;利用熔盐储热装置的耦合机组在85%THA负荷下

稳定运行时间可延长约33%

整个耦合系统能够消纳更多的太阳能。该结论对塔式太阳能补偿燃煤火电机组性能研究具有一定参考作用。

Abstract

To improve the power generation efficiency of tower solar power station and reduce the coal consumption of thermal power units

the tower solar thermal system with molten salt heat storage device is coupled into the conventional coal-fired unit. Moreover

simulation on this coupling system is carried out. The research shows that

at the benchmark of 75% THA of the boiler load

the solar photothermal system side can bear 5%～15% of the heat transfer load

so that the coal-fired unit can run at 80%THA～90%THA load

and the coal consumption reduction rate increases from 5.76% to 15.54%. After the molten salt heat storage device is coupled into the coal-fired unit

the stable running time of the coupled unit can be prolonged by about 33% at 85% THA load

so that the entire coupling system can comsume more solar energy. The conclusion can be used as a reference for the study of the performance of tower solar compensated coal-fired thermal power units.

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