Configuration and Thermodynamic Performance Analysis of Molten Salt Electric Heaters in PV-CSP Hybrid Power Plants

LIU Yida; HU Yigong; ZHAO Mengdi; ZHANG Sen; WANG Nini; ZHAO Li

doi:10.19805/j.cnki.jcspe.2026.250574

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Configuration and Thermodynamic Performance Analysis of Molten Salt Electric Heaters in PV-CSP Hybrid Power Plants

更新时间：2026-07-16

- Configuration and Thermodynamic Performance Analysis of Molten Salt Electric Heaters in PV-CSP Hybrid Power Plants
- Chinese Journal of Power Engineering Vol. 46, Issue 7, Pages: 39-49(2026)
- 作者机构：
  
  1. 山东电力工程咨询院有限公司,山东,济南,250013
  2. 天津大学先进内燃动力全国重点实验室,天津,300350
- 作者简介：
- 基金信息：
- DOI：10.19805/j.cnki.jcspe.2026.250574
  CLC： TK114
- Published：2026
- 稿件说明：
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刘义达, 胡亦工, 赵梦娣, 张森, 王妮妮, 赵力. 光伏-光热电站中熔盐电加热器配置方式及其热力学分析[J]. 动力工程学报, 2026, 46(7): 39-49.
刘义达, 胡亦工, 赵梦娣, 张森, 王妮妮, 赵力. 光伏-光热电站中熔盐电加热器配置方式及其热力学分析[J]. 动力工程学报, 2026, 46(7): 39-49. DOI： 10.19805/j.cnki.jcspe.2026.250574.

DOI： 10.19805/j.cnki.jcspe.2026.250574

摘要

以新疆某光伏-光热(photovoltaic-concentrating solar power

PV-CSP)电站(含100 MW光热)为研究对象

设计了3种电加热器配置构型:构型一为电加热高温熔盐并联于蒸汽发生段;构型二为电加热低温熔盐并联于给水预热段;构型三为电加热按照功率比例分级配置于低高温双段储热。对40%~100%汽轮机热耗率验收(turbine heat acceptance

THA)多负荷工况的模拟分析表明:构型一在全负荷条件下可以实现最高热效率、往返效率及效率

100%THA工况下分别为45.12%、54.73%和69.67%;构型二具备高压加热器替代能力

可以减少抽汽并支持机组超额发电

29.8 MW的电加热器可以实现100%THA工况运行下的高压加热器完全替代;构型三虽然可以增强运行冗余性且具有负荷分担潜力

但是其对性能改善有限且增加了系统复杂性。因此

针对该PV-CSP耦合电加热熔盐储热系统

建议优选构型一。

Abstract

Taking a photovoltaic-concentrating solar power (PV-CSP) hybrid power plant (including 100 MW CSP) in Xinjiang Uygur autonomous region as the research object

following three system configurations were designed: configuration Ⅰ integrates electric heaters for high-temperature molten salt in parallel with the steam generation section of CSP system; configuration Ⅱ integrates electric heaters for low-temperature molten salt in parallel with the feedwater preheating section; configuration Ⅲ allocates electric heaters proportionally across the low-and high-temperature molten salt storage sections. Simulation analyses under multi-load conditions ranging from 40% to 100% turbine heat acceptance (THA) show that: configuration Ⅰ achieves the highest thermal efficiency

round-trip efficiency

and exergy efficiency under full load conditions

which reaching 45.12%

54.73%

and 69.67% under 100% THA condition

respectively; configuration Ⅱ exhibits strong capability in replacing high-pressure feedwater heaters

which can effectively displace extraction steam and realize excess power generation

and the high-pressure feedwater heaters can be completely replaced by a electric heater with 29.8 MW power under 100% THA condition; although configuration Ⅲ can enhance operational redundancy and has the potential for load sharing

its improvement in performance is limited and it increases the system complexity. Therefore

for the PV-CSP coupled electric-heating molten salt storage system

configuration Ⅰ is recommended as the optimal choice.

关键词

Keywords

references

孙月巧, 郑宏飞, 孔慧. 碳中和背景下煤电转型关键技术研究与展望[J]. 动力工程学报, 2022, 42(11): 1013-1023. SUN Yueqiao, ZHENG Hongfei, KONG Hui. Key technologies and prospects of coal power transformation under carbon neutrality background[J]. Journal of Chinese Society of Power Engineering, 2022, 42(11): 1013-1023.

陆王琳, 陈培, 陆启亮, 等. 不同地区太阳能PVT热泵系统仿真模拟与运行性能分析[J]. 动力工程学报, 2023, 43(11): 1487-1493. LU Wanglin, CHEN Pei, LU Qiliang, et al. Simulation and performance analysis of solar-assisted PVT heat pump system in different areas[J]. Journal of Chinese Society of Power Engineering, 2023, 43(11): 1487-1493.

王志峰, 何雅玲, 康重庆, 等. 明确太阳能热发电战略定位促进技术发展[J]. 华电技术, 2021, 43(11): 1-4. WANG Zhifeng, HE Yaling, KANG Chongqing, et al. Strategic positioning of solar thermal power generation to promote technological progress[J]. Huadian Technology, 2021, 43(11): 1-4.

韩中合, 刘辰浩, 吴乐意, 等. 利用旋流效应强化太阳能PV/T系统性能研究[J]. 动力工程学报, 2025, 45(8): 1261-1268. HAN Zhonghe, LIU Chenhao, WU Leyi, et al. Performance research of solar PV/T system using swirling enhancement[J]. Journal of Chinese Society of Power Engineering, 2025, 45(8): 1261-1268.

张曼铮, 郭伟, 方宇成, 等. 基于太阳能分频利用的光伏/光热综合发电系统热力学分析[J]. 动力工程学报, 2024, 44(8): 1216-1225. ZHANG Manzheng, GUO Wei, FANG Yucheng, et al. Thermodynamic analysis of a photovoltaic/photothermal integrated power generation system based on solar energy spectrum utilization[J]. Journal of Chinese Society of Power Engineering, 2024, 44(8): 1216-1225.

LIAQAT K, ORDONEZ J C, SCHAEFER L, et al. Design and techno-economic analysis of a 150-MW hybrid CSP-PV plant[C]//Proceedings of 2023 IEEE Conference on Technologies for Sustainability. Portland: IEEE, 2023: 218-224.

苗智昶. 基于光伏-光热耦合的多能互补发电系统研究[D]. 北京: 华北电力大学, 2022.

ZHAI Rongrong, LIU Hongtao, CHEN Ying, et al. The daily and annual technical-economic analysis of the thermal storage PV-CSP system in two dispatch strategies[J]. Energy Conversion and Management, 2017, 154: 56-67.

YONG Qingqing, TIAN Yanpei, QIAN Xin, et al. Retrofitting coal-fired power plants for grid energy storage by coupling with thermal energy storage[J]. Applied Thermal Engineering, 2022, 215: 119048.

HAN Xue, XU Chao, JU Xing, et al. Energy analysis of a hybrid solar concentrating photovoltaic/concentrating solar power (CPV/CSP) system[J]. Science Bulletin, 2015, 60(4): 460-469.

GUO Su, HE Yi, PEI Huanjin, et al. The multi-objective capacity optimization of wind-photovoltaic-thermal energy storage hybrid power system with electric heater[J]. Solar Energy, 2020, 195: 138-149.

LI Jingli, QI Wannian, YANG Jun, et al. The capacity optimization of wind-photovoltaic-thermal energy storage hybrid power system[J]. E3S Web of Conferences, 2019, 118: 02054.

刘佳佳, 巨星. 弃电热储能光伏-光热复合发电系统技术经济性分析[J]. 发电技术, 2025, 46(4): 807-817. LIU Jiajia, JU Xing. Techno-economic analysis of photovoltaic-concentrating solar power hybrid system for thermal energy storage of electricity curtailment[J]. Power Generation Technology, 2025, 46(4): 807-817.

DING Zeyu, HOU Hongjuan, YU Gang, et al. Performance analysis of a wind-solar hybrid power generation system[J]. Energy Conversion and Management, 2019, 181: 223-234.

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.

李应保, 罗润洪, 黄杰. 一种"绿电"熔盐储能系统的建模与动态特性研究[J]. 动力工程学报, 2024, 44(3): 455-461. LI Yingbao, LUO Runhong, HUANG Jie. Modeling and dynamic characteristics study of a "green electricity" molten salt energy storage system[J]. Journal of Chinese Society of Power Engineering, 2024, 44(3): 455-461.

YU Qiang, FU Peng, YANG Yihui, et al. Modeling and parametric study of molten salt receiver of concentrating solar power tower plant[J]. Energy, 2020, 200: 117505.

BOEREMA N, MORRISON G, TAYLOR R, et al. Liquid sodium versus Hitec as a heat transfer fluid in solar thermal central receiver systems[J]. Solar Energy, 2012, 86(9): 2293-2305.

ZHANG Xiang, SUN Yang, ZHAO Weilin, et al. The Carnot batteries thermally assisted by the steam extracted from thermal power plants: a thermodynamic analysis and performance evaluation[J]. Energy Conversion and Management, 2023, 297: 117724.

邵明轩, 孙杨, 张祥, 等. 依托低阶煤电站的提质储热卡诺电池及其性能分析[J]. 中国电机工程学报, 2023, 43(14): 5525-5536. SHAO Mingxuan, SUN Yang, ZHANG Xiang, et al. Carnot battery integrated with low-rank coal power plant for the stored heat upgrading and its performance analysis[J]. Proceedings of the CSEE, 2023, 43(14): 5525-5536.

MIAO Lin, LIU Ming, ZHANG Kezhen, et al. Energy, exergy, and economic analyses on coal-fired power plants integrated with the power-to-heat thermal energy storage system[J]. Energy, 2023, 284: 129236.

杨鹤. 基于布雷顿循环的卡诺电池储能特性研究[D]. 北京: 华北电力大学, 2024.

冀帅宇, 段立强, 王远慧, 等. 典型燃煤机组灵活调峰策略及性能研究[J]. 热力发电, 2023, 52(9): 94-103. JI Shuaiyu, DUAN Liqiang, WANG Yuanhui, et al. Research on flexible peak load regulation strategy and performance of typical coal-fired units[J]. Thermal Power Generation, 2023, 52(9): 94-103.

ZHANG Kezhen, ZHAO Yongliang, LIU Ming, et al. Flexibility enhancement versus thermal efficiency of coal-fired power units during the condensate throttling processes[J]. Energy, 2021, 218: 119534.

张菁, 黄琳, 夏天, 等. 基于布雷顿循环的不同构型卡诺电池储能系统性能分析[J]. 广东电力, 2024, 37(10): 46-54. ZHANG Jing, HUANG Lin, XIA Tian, et al. Performance analysis of different configuration Carnot battery energy storage system based on Brayton cycle[J]. Guangdong Electric Power, 2024, 37(10): 46-54.

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