核仪表系统中子倍增时间算法分析与评价  

Analysis and Evaluation of Neutron Doubling Time Algorithm in Nuclear Instrumentation System

作　　者：王银丽[1] 林超 何正熙[1] 张宓 罗炜[1] 张芸 蒋天植 孙聪健 许勇 WANG Yinli;LIN Chao;HE Zhengxi;ZHANG Mi;LUO Wei;ZHANG Yun;JIANG Tianzhi;SUN Congjian;XU Yong(National Key Laboratory of Reactor System Design Technology,Nuclear Power Institute of China,Chengdu 610041,China;Nuclear and Radiation Safety Center,Ministry of Environmental Protection of People’s Republic of China,Beijing,100082,China;Fujian Fuqing Nuclear Power Co.,Ltd.,Fuqing 350318,China)

机构地区：[1]中国核动力研究设计院核反应堆系统设计技术重点试验室,四川成都610041 [2]生态环境部核与辐射安全中心,北京100082 [3]福建福清核电有限公司,福建福清350318

出　　处：《自动化仪表》2021年第S01期11-15,20,共6页Process Automation Instrumentation

摘　　要：核仪表系统中子倍增时间是核电厂反应堆启动过程中需密切监视和控制的重要参数。中子倍增时间的准确测量和及时响应直接影响反应堆启动和安全运行。针对国内多个核电厂反应堆运行中出现的中子倍增时间波动及响应不及时问题,基于中子倍增时间的计算原理,对倍增时间算法进行了研究。通过对模拟仿真对算法中的相关参数进行敏感性分析,并结合中子倍增时间在反应堆设计中功能要求,给出了算法参数设置的优化建议。同时,结合工程实测数据验证了算法的有效性,以期为工程实际应用中子倍增时间的相关参数设置优化提供指导。The neutron doubling time is an important parameter needs to be closely monitoring and controlled during the start-up of nuclear power plants.Reactor start-up and safe operation is directly affected by accurate measurement and timely response of neutron doubling time.In view of the doubling time fluctuation and late response problems of reactor operation in many nuclear power plants in China,the calculation model of the neutron doubling time algorithm is researched based on neutron doubling time calculation principle.The sensitivity analysis of the relevant parameters in the algorithm is carried out with simulation.Combined with the funtion requirements of neutron doubling time in the reactor operation,the optimization suggestions for the setting of the algorithm parameters are given.In the mean time,the effectiveness of the algorithm is verified based on the actual engineering data to provide guidance for the algorithm parameter setting in engineering practical application.

关 键 词：核仪表系统 中子倍增时间 算法 参数 敏感性分析 反应堆启动 响应 报警 

分 类 号：TH702[机械工程—仪器科学与技术]