Cross-Space Risk Assessment of Cyber-Physical Distribution System Under Integrated Attack

作者：Jie Yang, Yihao Guo, Chuangxin Guo, Zhe Chen, Shenghan Wang · 发表于：IEEE Access · 年份：2021 · DOI：10.1109/access.2021.3101896 · 被引用次数：5 · 研究领域：Smart Grid Security and Resilience、Infrastructure Resilience and Vulnerability Analysis、Power System Reliability and Maintenance

Assessing cross-space risk of cyber-physical distribution system under integrated attack is investigated in this paper. Firstly, a hierarchical structure of cyber-physical distribution network according to IEC 61850 is established and a deliberate attack scenario with limited adversarial knowledge and stealth requirement is developed based on a general linear model for state estimation. Then, we formulate two optimization problems to describe the attack implementation and propagation process and obtain the likelihood of attacks including a robust solution and a risk solution in a fuzzy Bayesian network (BN). On this basis, a physical impact metric is defined as the integrated deviation of system states and measurements. Thus, the cross-space risk assessment can be performed. Finally, the simulation results of case studies demonstrate that the proposed method is effective and provides a broad and clear view of cyber-physical distribution system security situation.