核电厂仪控设备电磁干扰分析与定位  

EMI Analysis and Location of I&C Equipment in Nuclear Power Plant

作　　者：黄甦 何小东 韩大地 刘心愿 李本荣 Huang Su;He Xiaodong;Han Dadi;Liu Xinyuan;Li Benrong(Fujian Fuqing Nuclear Power Co.,Ltd.,Fuzhou,350318,China;Nuclear Power Institute of China,Chengdu,610213,China)

机构地区：[1]福建福清核电有限公司,福州350318 [2]中国核动力设计研究院,成都610213

出　　处：《核动力工程》2023年第1期171-176,共6页Nuclear Power Engineering

摘　　要：电磁干扰(EMI)对核电厂仪控设备的影响显著,某些核电厂发生EMI导致保护设备误报警、保护系统误动或拒动,从而造成误停机甚至停堆事故。因此,必须有针对性地对EMI各干扰源制定解决方案。本文以某核电厂温度测量元件受干扰为例,采用层层演进的方法,发现定位干扰源、分析干扰特性,直至提出解决方案,并采取完善重要保护信号接地、出台运行机组防EMI管理规定等措施,大大降低了EMI对于核电厂运行设备的影响。Electromagnetic interference(EMI)has a significant impact on the I&C equipment of nuclear power plants.In some nuclear power plants,EMI leads to false alarm of protection equipment,misoperation or refusal to operate of protection system,resulting in false shutdown and even reactor shutdown accident.Therefore,it is necessary to make targeted solutions for each interference source of EMI.Taking the interference of temperature measuring elements in a nuclear power plant as an example,this paper uses the method of layer by layer evolution to find out the interference source,analyze the interference characteristics,and finally propose a solution.Measures such as improving the grounding of important protection signals,and issuing the regulations on EMI prevention management of operating units have greatly reduced the impact of EMI on operating equipment in nuclear power plants.

关 键 词：核电厂 电磁干扰(EMI) 分析 定位 

分 类 号：TL334[核科学技术—核技术及应用]