Modeling of Interdependent Critical Infrastructures Network in Consideration of the Hierarchy

Abstract

With the development of socio-economic, interdependencies between critical infrastructures become much closer, that resulting in the fragility of the system. This paper proposes a model of interdependent critical infrastructures network in consideration of the hierarchy. Physical interdependence among critical infrastructures is taken into consideration. Even more specifically, the interdependent network is constructed by analyzing the energy, water supply, telecommunication and transportation, together with the consideration of the hierarchy structure. Moreover, within the interdependent network, the determining method of edges weight is developed on the basis of the supply capacity and quantity of critical infrastructures system elements, which helps to describe the regional characteristics. Finally, the interdependent network with the hierarchy is constructed by taking energy, water supply, telecommunication and transportation of a city in China as the objects. And the analysis on the structural characteristics of the network shows that energy nodes have a greater influence, which suggests that the energy related critical infrastructures need more attention.