EN梯级火储集成系统设计及其调频基础研究
Design of a cascaded thermal-storage-integrated system and fundamental research on its frequency-regulation performance
- 热力发电 2026年55卷第2期 页码：108-116
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DOI：10.19666/j.rlfd.202508050
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纸质出版：2026
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丁煊涛, 范庆伟. 梯级火储集成系统设计及其调频基础研究[J]. 热力发电, 2026,55(2):108-116.
丁煊涛, 范庆伟. Design of a cascaded thermal-storage-integrated system and fundamental research on its frequency-regulation performance[J]. Thermal Power Generation, 2026, 55(2): 108-116.
丁煊涛, 范庆伟. 梯级火储集成系统设计及其调频基础研究[J]. 热力发电, 2026,55(2):108-116. DOI： 10.19666/j.rlfd.202508050.
丁煊涛, 范庆伟. Design of a cascaded thermal-storage-integrated system and fundamental research on its frequency-regulation performance[J]. Thermal Power Generation, 2026, 55(2): 108-116. DOI： 10.19666/j.rlfd.202508050.
摘要
【目的】在全球能源结构转型与“双碳”战略目标驱动下，提升火电机组灵活性已成为增强电网新能源消纳能力的关键路径。为提升火电机组调频灵活性并解决熔盐-蒸汽换热过程中的夹点问题，提出一种与亚临界机组耦合的三罐式梯级熔盐储热集成方案。【方法】基于EBSILON平台构建了330 MW机组稳态模型，并嵌入高-中-低温熔盐储释热回路，通过主蒸汽及给水旁路实现锅炉-汽轮机部分解耦。【结果】仿真结果表明：该系统循环电效率在100%THA工况下可达63.51%；集成系统在各工况的热备用工作状态下热耗率增幅仅约1%，而在40%THA、5%Pe调频深度下为13.2%；调频引发的煤耗增量随调频深度加大呈指数增长，为界定经济性运行死区提供了依据。【结论】该梯级储热结构在维持蒸汽品位的同时，显著提升了机组负荷响应速率与调频能力，为高比例新能源电力系统中火电机组的灵活性改造提供了理论支撑与工程设计范式。
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