基于动态水印的核电厂蒸汽发生器液位控制系统重放攻击检测方法研究  

Research on Replay Attack Detection Method of Steam Generator Liquid Level Control System in Nuclear Power Plant Based on Dynamic Watermark

作　　者：王东风[1] 谷赫 黄宇[1] 王嘉俊 WANG Dongfeng;GU He;HUANG Yu;WANG Jiajun(Department of Automation,North China Electric Power University,Baoding 071003,Hebei Province,China)

机构地区：[1]华北电力大学自动化系,河北保定071003

出　　处：《动力工程学报》2023年第9期1174-1180,1189,共8页Journal of Chinese Society of Power Engineering

基　　金：中央高校基本科研业务费专项资金项目(2021MS089)。

摘　　要：针对核电厂SG液位控制系统常规分散控制系统(DCS)防范重放攻击能力较弱且不具备有效检测能力的问题,使用动态水印的主动检测方法检测重放攻击,即通过向执行器中注入水印信号并在状态估计器中检测水印信息,从而验证传感器信号的真实性。根据控制系统的结构特性设计了基于动态水印技术的主动检测方案,从而实现对重放攻击的实时检测。结果表明:该检测方案在理论上以及数值仿真中均能检测到重放攻击。In response to the problem that the conventional DCS of the SG liquid level control system in nuclear power plants has weak ability to prevent replay attacks and does not have effective detection capabilities,an active detection method using dynamic watermarks was used to detect replay attacks,which involved injecting watermark signals into the actuator and detecting watermark information in the state estimator,so as to verify the authenticity of sensor signals.Based on the structural characteristics of the control system,an active detection scheme based on dynamic watermark technology was designed to achieve real-time detection of replay attacks.Results show that the detection scheme can detect the occurrence of replay attacks both theoretically and in numerical simulations.

关 键 词：蒸汽发生器 液位控制系统 重放攻击 动态水印 系统攻击检测 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]