Reliability Analysis And Optimization Mechanism Of Power Grid Communication Network Based On Important Nodes And Environmental Factors

In order to maintain the daily work of the network and improve the robustness of the network,how to analyze and improve the reliability of the power grid communication network has become a key research direction.First of all,the important nodes in the network have a very important impact on the robustness of the network.The failure of important nodes often leads to the failure of large-area network to work properly.Therefore,it is a key research to sort the important nodes to sort out important nodes.Based on this,the reliability of power grid communication network can be analyzed and improved based on important nodes.In addition,the impact of the actual environmental factors on the reliability of the power grid communication network can not be ignored.Existing research on the reliability of power grid communication network often only analyzes from the perspective of network topology,and does not combine the characteristics of the power communication service and the environment in which the network is located.Research on the reliability of power grid communication network based on environmental factors has more practical value and reference significance.Therefore,this paper analyzes and optimizes the reliability of the power grid communication network by combining the defects of the existing power grid communication network reliability research with the actual situation of the power grid communication network.This paper first proposes a node importance evaluation algorithm suitable for power grid communication network.The algorithm combines network topology and power service to comprehensively analyze node importance.In the network topology layer,based on the existing network cohesion,a cut point factor is added as a weighting factor to divide the cut point and the non-cut point.In the power service layer,this paper combines power service indicators and node failure probability for comprehensive analysis.Then,this paper simulates three different attack models to simulate attacks on the network,and proves the rationality and correctness of the algorithm through the change of network invulnerability.Finally,this paper applies the power grid communication network node importance evaluation algorithm to the network node risk analysis,and significantly reduces the risk of some key nodes through the route reconstruction of the power communication service,thereby reducing the overall risk of the network and improving the reliability of the network.Secondly,the existing academic research on the reliability of power grid communication network rarely considers the actual environment of the network.In order to further study the reliability of the power grid communication network under the actual working environment,this paper uses the normal cloud model to model the multidimensional environmental factors of the power grid communication network.In order to introduce the model into the reliability analysis,the controlled hybrid random petri network is used to model and analyze the power service transmission system in the power grid communication network.The simulation comparison experiments show the influence of environmental factors on system reliability,which provides a reference for the reliability analysis of power grid communication network under actual environmental conditions.At the same time,the backup routing algorithm considering environmental factors is proposed.By observing the change of system reliability under different backup routing conditions,the most suitable backup route is selected to improve the system reliability.