数字化反应堆保护系统信息安全与功能安全协调设计研究  

Study on the Coordination Design of Cyber Security and the Safety of the Digitalized Reactor Protection System

作　　者：夏丹阳 孙永胜 谭平 刘汪平 XIA Danyang;SUN Yongsheng;TAN Ping;LIU Wangping(CNNC Key Laboratory on Industry Control System Cyber Security,China Nuclear Control System Engineering Co.,Ltd.,Beijing,102401,China;Xiapu Nuclear Power Co.,Ltd.,CNNP,Xiapu of Fujian Prov.355199;China Nuclear Power Engineering Co.,Ltd.,Beijing,100840,China)

机构地区：[1]中核工业控制系统网络安全重点实验室中核控制系统工程有限公司,北京102401 [2]中核霞浦核电有限公司,福建霞浦355199 [3]中国核电工程有限公司,北京100840

出　　处：《核科学与工程》2024年第5期1148-1154,共7页Nuclear Science and Engineering

摘　　要：本文主要针对核电厂数字化反应堆保护系统(RPS)信息安全与功能安全协调设计进行研究。首先进行数字化RPS攻击树建模,定性和定量分析数字化RPS信息安全威胁,提出信息安全威胁对数字化RPS可靠性影响的量化评估方法。然后,综合考虑信息安全与功能安全协调要求,从整体结构设计、单个子系统设计两个层面阐述协调设计原则,提出数字化RPS信息安全与功能安全协调设计方法和安全防护措施,使信息安全威胁对数字化RPS可靠性的影响降低到可接受程度。本文研究内容可用于指导数字化RPS设计。This paper studies the coordinated design of information security and the functional safety for the digitalized reactor protection system(RPS)of nuclear power plant.Firstly,digitalized RPS attack tree modeling is carried out to qualitatively and quantitatively analyze digitalized RPS information security threats,and a quantitative evaluation method for the impact of information security threats on digitalized RPS reliability is proposed.Then,considering the coordination requirements of information security and functional safety comprehensively,the coordination design principles are expounded from the two levels of the overall structure design and the single subsystem design,and the coordination design methods and safety protection measures of digitalized RPS information security and functional safety are proposed,so as to reduce the impact of information security threats on the reliability of digitalized RPS to an acceptable level.The case of study of this article can be used to guide the design of the digitalized RPS.

关 键 词：信息安全 反应堆保护系统 攻击树 防护设计 协调要求 

分 类 号：TL48[核科学技术—核技术及应用]