Research On Node Importance Evaluation Method Of Power Communication Network Based On Multi-factor Evaluation Indicators

With the acceleration of the construction of the smart grid,the power communication network has also developed rapidly.As a network to ensure the safe and stable operation of the smart grid,it is necessary to study the performance of the power communication network.This paper analyzes the performance of the power communication network from the perspective of the node importance in the network.In the actual operation of the power communication network,the loss can be avoided not only by scheduling the nodes according to their importance,but also by distinguishing repair priority according to the importance of nodes.Therefore,the research on the node importance of the power communication network is of great significance.In order to evaluate the importance of the nodes accurately,this paper evaluates the node importance of the power communication network from four evaluation indicators:the topology,the power services carried by the network,the types and loads of the nodes,and the failure probability obtained from the operational statistics.Firstly,the importance of the nodes in the fusion topology layer and the business layer is defined based on the topology and the business characteristics,the coefficients based on the power factor and the failure probability factor are defined respectively for the type and load of the node and the failure probability factor to obtain the comprehensive factor coefficient of the power communication network by weighting.The method of the node importance evaluation based on multi-factor evaluation index is designed by considering the above factors.Then,aiming at the looping characteristics of the power communication network topology,a multi-index node evaluation method based on minimum loop shrinkage was proposed.Finally,different algorithms of the network model experiments are compared according to the single point of attack.And the simulation results verify the accuracy and effectiveness of the two algorithms proposed in this paper,so as to provide more practical reference for the development of the power communication network.