THE SECURITY OF SMART GRID SYSTEMS BASED ON THE GRAPH STRUCTURAL PROPERTIES

Cyber-physic systems security
Authors:
Aleksandrova E. B. Shtyrkina A. A.
Abstract:

The paper proposes an approach to estimating the security of cyber-physical systems
based on the modeling graph structural characteristics. As structural characteristics of the graph, indicators
based on the spectrum of the graph were studied. To test the hypothesis about the negative
impact of attacking influences on the structure of the graph, experiments were carried out, consisting
in the sequential removal of vertices and edges from the graph with «small world» property. This type of graph was chosen because researches show that the «small world» property is inherent in high voltage smart grids. The conducted experiments showed that the attacking influences on the
system, displayed on the graph, negatively affect the structure of the network, and therefore lead to
inefficient information exchange and, consequently, the functioning of the system.