核电厂地震矢量和自动停堆系统的设计与实现  

Development and Implementation of Seismic Vector and Automatic Shutdown System for Nuclear Power Plant

作　　者：吴雄伟[1,2,3] 张亿 杨江[1,2,3] 林强 WU Xiongwei;ZHANG Yi;YANG Jiang;LIN Qiang(Hubei Laboratory of Earthquate Early Waring,Institute of Seismology,China Earthquake Administration,Wuhan Hubei 430071,China;Wuhan Institute of Seismologic Instrument Co.,LTD.,Wuhan Hubei 430071,China;Engineering Technology Research Center for Earthquake Monitoring and Early Warning Disposal of Major Projects in Hubei Province,Wuhan Hubei 430071,China)

机构地区：[1]中国地震局地震研究所,地震预警湖北省重点实验室,湖北武汉430071 [2]武汉地震科学仪器研究院有限公司,湖北武汉430071 [3]湖北省重大工程地震监测与预警处置工程技术研究中心,湖北武汉430071

出　　处：《电子器件》2022年第3期599-604,共6页Chinese Journal of Electron Devices

基　　金：国家重点研发计划项目(2017YFC1500804);中国地震局地震研究所和地壳应力研究所基本科研业务费专项项目(IS201726160)。

摘　　要：针对核电站地震停堆系统单轴地震报警的设定阈值偏保守的问题,提出了一种基于矢量和阈值报警的地震自动停堆系统。通过水平矢量和阈值报警,消除单轴报警判别误差。采用纯硬件结构实现地震加速度信号的采集、滤波、绝对值转换,通过模拟乘法器进行矢量和计算。对电路细节进行了分析,给出了电路元器件参数选择和信号转换的传递函数。系统经过性能测试和核安全级设备取证试验验证,达到了核级设备性能指标。In order to solve the problem of the set threshold value of single axis earthquake alarm in nuclear power plant earthquake shutdown system being conservative,an automatic shutdown system based on vector sum threshold alarm is proposed,which can eliminate the discrimination error of single axis alarm through horizontal vector sum threshold alarm.Signal acquisition,filtering,absolute value conversion of earthquake acceleration are realized by pure hardware structure,and the vector sum is calculated by analog multiplier.The circuit details are analyzed,and the circuit components parameters and the signal conversion transfer function are given.The system has been verified by the performance test and the certification test process of nuclear safety level equipment,and achieves the performance of nuclear level equipment.

关 键 词：自动停堆 加速度峰值 矢量和 绝对值转换 模拟乘法器 

分 类 号：TH89[机械工程—仪器科学与技术]