Research On Node Importance Evaluation Method Of Electric Power Communication Network Based On Complex Network Theory

With the development of communication technology, electric power communicationnetwork hosts an increasing number of business and its scale becomes more and morelarger, more important nodes in the network need to strengthen the management,maintenance, security and protection, to ensure the safety and reliable operation of theelectric power communication network. Based on the study of the important and complexnetwork nodes, this article takes use of features topological parameters synthesis methodof the complex network, takes the theory of complex networks into the actual electricpower communication network, the node importance evaluation is realized in the electricpower communication network.This paper analyzes some characteristic parameters such as the node degree,betweenness and eigenvector and tightness which are commonly used in research of thenode importance in complex network. It puts forward a kind of electric powercommunication network node importance evaluation method which is based on analytichierarchy process, with the existing electric power communication network as anexample, the physical model of the electric power communication network nodeimportance evaluation is established, simulates the four single parameter for theinfluence of the electric power communication network node importance. Then, it usesthe analytic hierarchy process to analyze the characteristic of the four parameters on theinfluence of the node importance, determines the weight coefficient of the fourparameters, combined with the inherent properties of electric power communicationnetwork at the same time, puts the line bandwidth to the weighted network and usessynthesis method with the weighted four characteristic parameters to evaluate nodeimportance of the actual power network.In addition, this thesis proposes using node anti-destroying ability to evaluate thenode importance. Begin from anti-destroying ability index network robustness andefficiency of the network, there are two different attack ways, the random attack andselective attack, to evaluate the electric power communication network anti-destroyingability. It also considers to use network efficiency decreases when the single nodenetwork is attacked as the evaluation of the node anti-destroying ability, thus networkefficiency decreases more, nodes anti-destroying ability is smaller, the node is moreimportant. It shows that the sequence and sort in the node anti-destroying ability isconsisted with node importance evaluation method proposed in this paper fromsimulation experiments, at the same time it also confirms that the proposed method isvery applicable for electric power communication network, and it is easier to quickly findthe core node through the node importance of weighted electric power communicationnetwork, which is advantageous to the operation and maintenance of the electric powercommunication network.