Analysis of Information-Physical Coordinated Attack Paths Based on Vulnerability of Critical Nodes in Cyber-Physical Power System

LIU Wei; LI Ke; WEI Xingshen; WANG Qi

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Electric Power Construction ›› 2025

Analysis of Information-Physical Coordinated Attack Paths Based on Vulnerability of Critical Nodes in Cyber-Physical Power System

LIU Wei^1,2,3, LI Ke^2,3, WEI Xingshen^2,3, WANG Qi⁴

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Abstract

[Objective] With the integration of advanced digital information technology and power physical systems, traditional power system has evolved into more efficient and controllable Cyber-Physical System (CPS). However, this also increases the risk of cyber-physical collaborative attacks. [Methods] In response to these challenges, this paper analyzes the sources of physical system security incidents caused by information system security threats, categorizes the types of cyber-physical collaborative attacks, and establishes two typical attack scenarios. A simplified single-sided network structure of the power CPS is modeled based on complex network theory and energy-information flows. A three-layer cyber-physical power system network node one-to-one dependency framework is built using the correlation matrix theory. The evolution model of cascading failures in cyber-physical power system nodes is proposed, and a weighted comprehensive centrality index is designed to assess the vulnerability of key nodes. [Results] By simulating different cyber-physical collaborative attack strategies, the node survival rate performance under continuous attacks or failures is analyzed. The accuracy of this method in identifying cyber-physical attack paths is validated, [Conclusions] providing a technical reference for security risk analysis of critical nodes and stable operation control in practical power system.

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cyber physical system (CPS) / cyber-attack / cyber-physical security / key node identification / vulnerability assessment

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LIU Wei, LI Ke, WEI Xingshen, WANG Qi. Analysis of Information-Physical Coordinated Attack Paths Based on Vulnerability of Critical Nodes in Cyber-Physical Power System[J]. Electric Power Construction. 2025

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