华龙一号LPD在线监测系统误差分析  

Error Analysis of LPD On-line Monitoring System in HPR 1000

作　　者：张知竹[1] 廖鸿宽 李庆[1] 龚禾林[1] 陈长[1] 李向阳[1] 刘启伟[1] Zhang Zhizhu;Liao Hongkuan;Li Qing;Gong Helin;Chen Zhang;Li Xiangyang;Liu Qiwei(Nuclear Power Institute of China,Chengdu,610213,China)

机构地区：[1]中国核动力研究设计院,成都610213

出　　处：《核动力工程》2020年第2期11-15,共5页Nuclear Power Engineering

摘　　要：核电厂采用线功率密度(LPD)在线监测系统对电站运行的实测参数在线计算并显示堆芯线功率密度,能够准确、及时地描述堆芯状态,提高核电厂运行的安全性和经济性。LPD在线监测系统报警限值的设定,需要考虑在线监测系统的总体误差,并留有一定裕量。通过研究华龙一号LPD在线监测系统的总体不确定度的分析方法,将系统的各部分误差通过统计方法综合起来,得到系统的总体误差限值。结果表明,华龙一号采用的LPD在线监测系统误差满足工程要求。LPD on-line monitoring system is adopted in nuclear power plants to calculate and display the real monitoring parameters such as linear power density(LPD) and hot spot factor, which can present the state of the reactor core accurately and in time, thus to improve the economy and safety of the nuclear power plant. The overall error of LPD should be considered in the alarm limit settings of LPD, with certain margin. The analysis method for overall uncertainty of LPD on-line monitoring in HPR1000 is studied, and combining errors of various parts obtained by statistical method, the overall error limit is obtained. The results show that the error of LPD on-line monitoring system in HPR1000 meets the engineering requirement.

关 键 词：线功率密度(LPD) 在线监测 误差分析 

分 类 号：TL329[核科学技术—核技术及应用]