Heterogeneity and Directionality Analysis of the Cyber Physical Power System

A cyber physical power system model based on the weighted tensor product is proposed in this paper to describe the interlayer and intralayer relationships of entities in both systems. The different functional attributes of nodes and the directivity of the energy flow in the system are respectively described as the heterogeneity of nodes and the directionality of edges. During failure propagation, the dynamic topology method is applied to convert the protection strategies and load redistribution measures into system connectivity rebuilding. The simulation results of fault propagation in the cyber physical power system under different initial failure ratios show that, compared with the undirected model, the directional interactions in the proposed approach can significantly improve the system survival rate during cascading failure. In addition, the physical system shows a lower vulnerability due to the protection provided by spare edges and power sources.