Vulnerability Analysis And Attack Strategy Research Of Power Communication Network

The vulnerability assessment of power communication network can identify the vulnerable link of the network,strengthen the protection of vulnerable nodes or links,and then improve the reliability of the network and reduce network losses.As the power communication network is a special communication network serving the power system,its service has obvious industry characteristics,so the impact of power service should be fully considered when evaluating the vulnerability of the network.On the basis of existing vulnerability assessment methods,this paper integrates the topology structure and service characteristics,establishes comprehensive vulnerability indicators,and establishes incomplete information attack model to analyze network survivability.Based on the complex network theory,the Node-Service Coupling Degree and the Node-Service Coupling Degree Distribution are defined according to the degree of connection between nodes and service paths,and the vulnerability of nodes is obtained.Then,in the service layer of power communication network,the link traffic is calculated;from the connection relationship between nodes and links,the link vulnerability and link traffic are synthesized to get the link comprehensive vulnerability,and then the service efficiency,which is the vulnerability evaluation index of power communication network,is obtained.Then,in the service layer of power communication network,the link traffic is calculated;from the connection relationship between nodes and links,the link vulnerability and link traffic are synthesized to get the link comprehensive vulnerability,and then the service efficiency,which is the vulnerability evaluation index of power communication network,is obtained.Aiming at the general attack strategy modeling of power communication network based on unequal probability,the link sampling probability and general attack intensity are quantified on the basis of link comprehensive vulnerability.Then,the failure threshold is set,and the service efficiency is taken as the invulnerability measure,and the general attack strategy model of power communication network under incomplete information is established.This model has guiding significance for the establishment of a robust power communication network in the initial construction of the network,thereby improving the invulnerability of the network.Finally,the rationality and feasibility of the network vulnerability index and incomplete attack strategy model proposed in this paper are verified by the comparative analysis of simulation experiments.