Abstract:

Based on the complex network theory, this paper abstracts the smart grid into the topological network structure composed of nodes and edges, and establishes the simulation process of smart grid network attack based on the complex network theory from the two aspects of simulation network construction and network attack simulation. Firstly, the simulation network is constructed and the distribution of the node degree and the cumulative probability distribution of the node degree are analyzed. It is concluded that the network is a scale-free network. Secondly, perform network attack simulation and set up two attack cases, namely, random attacks against all network nodes in the smart grid (case 1) and attacks against nodes with a degree greater than 80% of the maximum degree in the smart grid network (case 2). By comparing and analyzing the changing characteristics of the network clustering coefficient, average degree, and average path length in the two attack cases. It is found that the effect of case 1 is smaller than the effect of case 2 in reducing the network clustering coefficient. In terms of the average degree change and the average path length of the network, the impact of case 1 is higher than case 2.

Key words: complex network, smart grid network, network attack, simulation