基于第一性原理的核电厂热力性能在线监测及预警系统研究
Study on Online Monitoring and the Early Warning System of Thermal Performance for Nuclear Power Plant Based on First Principles
张勋 1侯建飞 1谢静 2金璐1
作者信息
- 1. 中广核工程有限公司,广东 深圳 518100
- 2. 深圳中广核工程设计有限公司,广东 深圳 518100
- 折叠
摘要
核电厂的设备及系统实际热力性能可能低于设计预期并影响机组出力和经济性,因此通过研究核电厂热力性能在线监测及预警系统,以实现关键设备及系统的热力性能实时在线监测,并对热力性能进行偏差预警.通过软件建立某在役核电机组热力系统机理模型,基于核电机组实际仪表测量数据对机理模型进行同化,通过数据调谐分析测量值偏差并进行修正,使其满足第一性原理,然后计算模型中各个设备及系统的热力性能实际值,同时根据设备设计特性获得其性能参考值,通过对比实际值和参考值,以快速定位至性能异常设备.性能分析结果表明,目标核电机组的凝汽器和一列汽水分离再热器存在性能不足,可以为现场的运行优化提供参考.
Abstract
The actual thermal performance of equipment and system in nuclear power plant may be lower than expected due to the deviation of equipment manufacture and installation,long-term aging of equipment and other reasons,thus the unit power output and economic benefits could be affected.Because of the complexity of the thermodynamic system,it is also difficult to locate the faulty equipment quickly.As a result,the online monitoring and the early warning system of thermal performance for nuclear power plant is studied to realize the real-time online monitoring of thermal performance for key equipment and the whole thermal system,and to give early warning of thermal performance deviation.The thermodynamic system physical model of an in-service nuclear power plant is established by software.The physical model is assimilated based on the actual instrument measurement data of the nuclear power unit,and the deviation of the measured value is analyzed and corrected by data reconciliation to obey the first principles.Then the actual thermodynamic performance of each equipment and whole system in the model is calculated.At the same time,the performance reference value is obtained according to the design characteristics of the equipment.By comparing the actual value with the reference value,the abnormal equipment in performance can be located quickly.Performance analysis results show that there are obvious deficiencies in the condenser and a series of moisture separator re-heater of the target nuclear power unit,which can be guidance for on-site operation optimization.
关键词
热力性能/监测/预警Key words
Thermal performance/Monitoring/Early warning引用本文复制引用
出版年
2024
NETL
NSTL
万方数据