Cyber-Physical Vulnerability Assessment in Smart Grids Based on Multilayer Complex Networks

• DOI: 10.3390/s21175826
• Publication Date: 2021-09-01T02:58:15Z
• Authors: Monica Alonso; Jaime Turanzas; Hortensia Amaris; Angel T. Ledo
• Keywords: Cyber-physical system; Vulnerability; Cascading failure

In the last decade, main attacks against smart grids have occurred in communication networks (ITs) causing disconnection of physical equipment from power (OTs) and leading to electricity supply interruptions. To deal with deficiencies presented past studies, this paper addresses vulnerability assessment considering grid as a cyber-physical heterogeneous interconnected system. The model system is composed network information technology (ICT) both are interrelated by means control installed grid. This highlights hidden interdependencies between ICT contains interaction systems. mimic real nature grids, based on multilayer complex theory scale-free graph, where there one-to-many relationship cyber assets. Multilayer centrality indexes used determine set nodes criticality. proposed methodology, which includes measurement, communication, equipment, has been tested standardized that network. Results demonstrate model’s effectiveness detecting vulnerabilities interdependent compared traditional assessments applied (OT).