Design And Implementation Of Virtual Network Mapping System For Power Communication Network

With the development of the power grid,the development of human society has been greatly promoted,and as one of the pillars of the safe and stable operation of the power grid,it also plays an important role in it.The existing power communication network adopts the multi-service networking mode,with the long-term deployment of all kinds of power network services,the power communication network has problems such as increasingly overstaffed and rigid structure.Virtual network mapping technology,as a technology to create multiple heterogeneous virtual networks on the basis of sharing the underlying physical networks,its features make it in the protection of power grid security and improve resource utilization and so on has the advantage of the natural,virtual network mapping technology become existing solution to the problem of electric power communication network architecture rigid that an effective technical solution.In this paper,the characteristics of power communication network will be combined to complete the realization of network virtualization technology to meet the special needs of power grid scenarios,and the design and implementation of virtual network mapping system for power communication network will also be completed.Due to different nodes in the power grid deployment with different Numbers and types of power equipment,in order to solve the problem of complex constraints of node mapping in the process of grid virtualization,this paper puts forward the virtual network mapping algorithm based on multiple constraints.Based on the simulated annealing algorithm,the adaptability of the virtual network mapping algorithm to the node multiple constraints is improved by adding the dynamic search of the multiple constraint neighbor solution and the improved acceptance probability of the deteriorating solution.In addition,in order to meet the different requirements of fault-tolerant performance of different links in the grid,this paper proposes a backup routing allocation mechanism that supports priority division.This mechanism prioritizes grid links according to their importance,and improve the fault tolerance quality of backup routes by adding dynamically updated route weights and backup route regularization terms.Besides,the fault tolerance of the grid links is estimated to ensure the stable operation of important links in the process of virtual mapping.Firstly,this paper introduces the research background and progress of current power grid virtualization technology,in order to put forward the research significance of virtual network mapping system for power communication network.Then we analyze the functional requirements of the system,and divide the core functions that the system needs to have.Then next we design and implement the overall architecture and functional modules of the system,and describe the key modules and the interaction between them in detail.Finally,test cases are designed to test the function of the system,and all the work of the paper is summarized and prospected.