Study On Cascading Failure Of Networks Oscillation Behavior

The failure of one node in the network triggers the successive failure of other nodes on the network,which leads to the chain spread of the fault on the network and eventually leads to a considerable part of the network failure.In this paper,Nodes and even the entire network,resulting in incalculable losses and disastrous consequences.In order to cope with the catastrophe in the critical infrastructure network caused by the cascading failures,it is critical to reduce the scale and extent of the faults in a timely and effective manner.This is the key to reduce the various social and economic losses.Therefore,this paper aims at the problem of cascading failure on critical infrastructure network and aims to effectively control the spread of cascading failures on the network.From the point of view of node and edge,the definition of initial load is proposed.In this paper,a network model is built to fit the actual situation,and a robust and reasonable measurement method is proposed.The dynamic process of cascading failures on the network is discussed.In view of the phenomenon of abnormal robustness,Large-scale cascade failure characteristics of the spread and protection measures,and in the field of practical management to carry out the corresponding research.The main contents of this paper are as follows:(1)An initial load measurement method for nodes and edges is proposed.Based on the analysis of the local features of the nodes and edges in the network,it is considered that the initial load of the nodes and edges in the network is related to the traffic flowing in the network,and the traffic sent by different nodes and different sides is not exactly the same.The movement of the traffic is not completely random but is directed towards a destination along the shortest path.(2)On the basis of considering the difference of nodes in the network and the preference of traffic destination,the cascade failure model of nodes is constructed on the basis of analyzing the evolution mechanism of cascading failures on the network.Through the introduction of adjustable parameters to control the size of the network capacity,with several metrics to measure the robustness of network resistance cascade failure,in the numerical analysis and simulation methods,the network found the robustness of the network with the overall capacity And the robustness of the cascade fault is improved by analyzing the basic structure of the network and the mode of the network connection in order to explain the robustness of the network.(3)On the basis of considering the difference of edge in the network and the preference of traffic destination,the edge cascade failure model is constructed.Taking into account the fact that there are significant differences in the edge of the network,by assigning different weights to define the initial load side,the coordination of the entire network so that nodes generate traffic and edge traffic value equal.A cascaded fault load model with tunable parameters is constructed.Based on the different metrics,the relationship between edge capability and network robustness is analyzed.In order to find out the vibration phen omenon of robustness,by studying the structural characteristics of the network,And the optimization strategy to imp rove the robustness of cascading failures of the whole network is discussed.