Research On Attack Reconstruction And Simulation Technology Of Cyber Physical Power System

With the development of smart grids,technologies such as communication,sensing,computing,and control have been widely used in power systems,which makes the interaction between power physical systems and cyber systems become increasingly frequent,thus modern power grids gradually develop into cyber physical power systems(CPPS)integrating computing networks,communication networks,and power networks.The cyber system greatly improves the optimization and control capabilities of the cyber physical power system,however,it also brings many potential risks.For example,when the cyber system is being compromised by a cyber-attack,it will threaten the safe and stable operation of the entire power system because of the fusion and interaction of the cyber system and the power physical system.To this end,this paper conducted a preliminary study on the attack reconstruction and simulation technology of the cyber physical power system.The specific research work includes:Firstly,this paper proposes a CPPS real-time co-simulation platform considering cyber-attacks.Based on the existing real-time co-simulation scheme,we improve the platform from the perspective of the simulation tools and the coordination modes.Moreover,a man-in-the-middle link is added.Thus,the engineering simulation related to CPPS real-time co-simulation platform considering cyber-attacks is realized.Secondly,the mechanism of dynamic interaction between cyber system and physical system under cyber attack is investigated.The cases of the man-in-the-middle attack and the false data injection attack on distributed cooperative control are considered to investigate the impact on the power system.The experiment is implemented on the platform established,and the results illustrate the coupling and interaction mechanism between the cyber system and the physical system in CPPS.Moreover,the effectiveness of the platform is verified.Thirdly,the research proposes an attack reconstruction and detection method based on adaptive sliding mode observers.In order to reduce the adverse effects of cyber attacks on the power system and provide effective technical support for the development of related security control strategies,an attack reconstruction and detection method for CPPS actuator and sensor attacks is proposed.Specifically,adaptive sliding mode observers and robust differentiators are implemented to establish the attack reconstruction and detection method with adaptive methods.Furthermore,the effectiveness of the method is verified through simulation on the proposed platform.