Reliable Mapping Algorithm Of Virtual Resources In Fi-Wi Access Network For Power Service

With the increase of power services’ requirements,a large number of modern communication equipment is widely used in smart grids.These devices carry a large amount of power supply and demand data in the process of power distribution.Using these data effectively is benefit for accurate monitoring and efficient maintenance of power system.The continuous emergence of new services and the high requirements for service quality have brought challenges of both data volume and processing requirements.The power communication network,as the infrastructure for carrying smart grid information transmission,has seen a sharp increase in communication pressure.Therefore,it is of great theoretical significance and application value to study how to improve the utilization rate of network resources and the stability of the network,and to realize the safe,reliable,economical and efficient provision of services for differentiated power services in the power communication network,so as to ensure the sustainable development of the smart grid.Fiber-Wireless network(Fi-Wi)integrates the advantages of low cost,high flexibility of wireless access,and large capacity,high reliability,and low transmission loss of wired access,which can effectively meet the communication of various types of data in power communication systems.Based on this,this thesis takes Fi-Wi access network as the communication network of smart grid,uses network virtualization technology to shield the differences of underlying network structures,and studies how to improve the carrying capacity of power services by optimizing the allocation of network resources.Aiming at the high requirement of the reliability of the virtual resource allocation process in the power communication network,this thesis proposes a reliable resource mapping algorithm of virtual resources in Fi-Wi access network based on load balancing.Based on the characteristics of Fi-Wi network,a virtual resource mapping model for Fi-Wi access network is proposed.Then,taking the requirements of power services on network bandwidth,delay,stability and other indicators as constraints,a reliable resource allocation problem model is constructed.The algorithm adopts the idea of backing up virtual links,in which the main link aims at network load balancing and the auxiliary link aims at saving network resources to map virtual network resources.Finally,the simulation results show that the algorithm can significantly improve the stability of link load and reduce the impact of faults on network services.Moreover,aiming at load balancing,it can map virtual network resources while ensuring the overall balance of the network,thus ensuring the reliable and stable operation of the power communication network.Aiming at the problem that the power communication network may suffer from irresistible factors and cause communication service interruption,this thesis proposes a virtual resource reconstruction mapping algorithm for the power service-oriented Fi-Wi access network,to achieve rapid redistribution of network resources for failed services.Based on the constraint conditions of service level,bandwidth demand,hop count limit and other index requirements,and taking the availability of links as the goal,a problem model is established to realize the rapid redistribution of network resources for failed services on the premise of ensuring network load balance.Simulation results show that the algorithm can quickly allocate new links for failed links,restore communication in time,and further enhance the reliability and anti-risk capability of power communication network.The reliable mapping algorithm of virtual resources in Fi-Wi access network for power service proposed in this thesis can realize the balance of network load and effectively deal with network faults,providing theoretical support for promoting the application of Fi-Wi access network in smart grid and promoting the stable operation of power system.