用最优控制方法对核电厂给热水器启动过程进行动态火用优化

IF 2.1 3区 工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY
Zhijiang Zhang, Zhaofei Tian
{"title":"用最优控制方法对核电厂给热水器启动过程进行动态火用优化","authors":"Zhijiang Zhang,&nbsp;Zhaofei Tian","doi":"10.1016/j.nucengdes.2025.114163","DOIUrl":null,"url":null,"abstract":"<div><div>The operational optimization of energy systems is of great significance for the sustainable development of energy, as well as for achieving carbon peaking and carbon neutrality. This research took the feedwater heater in a nuclear power unit as the research object, developed a thermo-hydraulic model applicable to the optimization. The optimal control algorithm, which is widely used in chemical and energy systems, has been innovatively applied to nuclear power units and combined with the dynamic exergy analysis method to optimize the start-up process. The results show that although the time optimal control shortens the startup time by 19.69%, the cumulative exergy loss increases by 1 time. The optimal control with the highest exergy efficiency as the goal reduced the start-up time by 19.23%, and the accumulated exergy destruction decreased by 25.14%. This study greatly reduced the startup time of feedwater heater and improved the process exergy efficiency. This study provided important guidance for the dynamic exergy optimization of energy system start-up processes and addressed the long-standing limitation of exergy analysis being confined to steady-state conditions.</div></div>","PeriodicalId":19170,"journal":{"name":"Nuclear Engineering and Design","volume":"441 ","pages":"Article 114163"},"PeriodicalIF":2.1000,"publicationDate":"2025-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Dynamic exergy optimization of feedwater heater start-up process in nuclear power plant using optimal control method\",\"authors\":\"Zhijiang Zhang,&nbsp;Zhaofei Tian\",\"doi\":\"10.1016/j.nucengdes.2025.114163\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>The operational optimization of energy systems is of great significance for the sustainable development of energy, as well as for achieving carbon peaking and carbon neutrality. This research took the feedwater heater in a nuclear power unit as the research object, developed a thermo-hydraulic model applicable to the optimization. The optimal control algorithm, which is widely used in chemical and energy systems, has been innovatively applied to nuclear power units and combined with the dynamic exergy analysis method to optimize the start-up process. The results show that although the time optimal control shortens the startup time by 19.69%, the cumulative exergy loss increases by 1 time. The optimal control with the highest exergy efficiency as the goal reduced the start-up time by 19.23%, and the accumulated exergy destruction decreased by 25.14%. This study greatly reduced the startup time of feedwater heater and improved the process exergy efficiency. This study provided important guidance for the dynamic exergy optimization of energy system start-up processes and addressed the long-standing limitation of exergy analysis being confined to steady-state conditions.</div></div>\",\"PeriodicalId\":19170,\"journal\":{\"name\":\"Nuclear Engineering and Design\",\"volume\":\"441 \",\"pages\":\"Article 114163\"},\"PeriodicalIF\":2.1000,\"publicationDate\":\"2025-05-23\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Nuclear Engineering and Design\",\"FirstCategoryId\":\"5\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0029549325003401\",\"RegionNum\":3,\"RegionCategory\":\"工程技术\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"NUCLEAR SCIENCE & TECHNOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nuclear Engineering and Design","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0029549325003401","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"NUCLEAR SCIENCE & TECHNOLOGY","Score":null,"Total":0}
引用次数: 0

摘要

能源系统的运行优化对于能源的可持续发展,实现碳调峰和碳中和具有重要意义。本研究以某核动力机组给水加热器为研究对象,建立了适用于优化的热工水力模型。最优控制算法广泛应用于化工和能源系统,创新地将其应用于核电机组,并结合动态火用分析方法对机组启动过程进行优化。结果表明,时间最优控制虽然使启动时间缩短了19.69%,但累计火用损失增加了1倍。以最高火用效率为目标的最优控制使启动时间缩短19.23%,累计火用破坏减少25.14%。该研究大大缩短了给热水器的启动时间,提高了过程的火用效率。该研究为能源系统启动过程的动态用能优化提供了重要指导,解决了长期以来用能分析局限于稳态条件的局限性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Dynamic exergy optimization of feedwater heater start-up process in nuclear power plant using optimal control method
The operational optimization of energy systems is of great significance for the sustainable development of energy, as well as for achieving carbon peaking and carbon neutrality. This research took the feedwater heater in a nuclear power unit as the research object, developed a thermo-hydraulic model applicable to the optimization. The optimal control algorithm, which is widely used in chemical and energy systems, has been innovatively applied to nuclear power units and combined with the dynamic exergy analysis method to optimize the start-up process. The results show that although the time optimal control shortens the startup time by 19.69%, the cumulative exergy loss increases by 1 time. The optimal control with the highest exergy efficiency as the goal reduced the start-up time by 19.23%, and the accumulated exergy destruction decreased by 25.14%. This study greatly reduced the startup time of feedwater heater and improved the process exergy efficiency. This study provided important guidance for the dynamic exergy optimization of energy system start-up processes and addressed the long-standing limitation of exergy analysis being confined to steady-state conditions.
求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Nuclear Engineering and Design
Nuclear Engineering and Design 工程技术-核科学技术
CiteScore
3.40
自引率
11.80%
发文量
377
审稿时长
5 months
期刊介绍: Nuclear Engineering and Design covers the wide range of disciplines involved in the engineering, design, safety and construction of nuclear fission reactors. The Editors welcome papers both on applied and innovative aspects and developments in nuclear science and technology. Fundamentals of Reactor Design include: • Thermal-Hydraulics and Core Physics • Safety Analysis, Risk Assessment (PSA) • Structural and Mechanical Engineering • Materials Science • Fuel Behavior and Design • Structural Plant Design • Engineering of Reactor Components • Experiments Aspects beyond fundamentals of Reactor Design covered: • Accident Mitigation Measures • Reactor Control Systems • Licensing Issues • Safeguard Engineering • Economy of Plants • Reprocessing / Waste Disposal • Applications of Nuclear Energy • Maintenance • Decommissioning Papers on new reactor ideas and developments (Generation IV reactors) such as inherently safe modular HTRs, High Performance LWRs/HWRs and LMFBs/GFR will be considered; Actinide Burners, Accelerator Driven Systems, Energy Amplifiers and other special designs of power and research reactors and their applications are also encouraged.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信