Reliability Analysis Of Power Communication Network Based On Complex Network

As a special network for power system communication,power communication network has been concerned by academic circles.The analysis of the network structure and transmission strategy of power communication network is of great significance not only to resist network deliberate attacks and prevent network cascade failure risks.At the same time,it has a guiding role in the formulation of network protection strategies.Due to the industry attribute of the power communication network,compared with the public communication network,the reliability analysis of the power communication network requires more consideration of industry factors.The thesis divides analysis of the reliability of power communication network into two aspects:structural reliability and transmission reliability.The reliability analysis strategy of the power communication network is studied from two aspects of node importance and network behavior of power communication network.The influence of nodes in power communication network is an integral part of network robustness analysis and analysis of cascade fault propagation characteristics,which can provide a basis for resisting the development of cascade fault protection strategies caused by deliberate attacks.Based on the structural characteristics of power communication networks at all levels,this thesis establishes a complex network model for power communication networks.Based on the neighbor topology features and network aggregation characteristics of nodes,the influence of nodes is defined.The network attribute value information entropy is used to calculate the network topology characteristics and its overall contribution to the influence of the nodes.Furthermore,from the perspective of network invulnerability and robustness,the impact of node deletion on network topology connectivity is analyzed,and the robustness of the network structure under node failure is obtained.In order to guarantee the service quality and transmission reliability of power communication network services,this thesis proposes a transmission strategy of the power communication network based on network dynamics behavior from the perspective of complex network dynamics according to the characteristics of service transmission in power communication network.The algorithm takes into account the interaction between nodes behavior and takes the number of links and link utilization as parameters to control the dynamic behavior of the nodes'reception.Control the sending behavior of the nodes according to the receiving state of the node in the path,and use the activation function to control the influence of different parameters on the node behavior.The transmission reliability of power communication network is optimized.