Research On The Invulnerability And Real-time Performance Of Smart Grid Communication Based On MPLS

With the scale and quantity of power grid enlarging, uncertain factor of theelectric power system operation is increasing. It’s significant to establish safe,reliable, high real-time communication network which will promote thedevelopment of smart grid. The topology of current power communication networkis settled which is hard to resist outside attack and destruction. The currentcommunication technology mainly includes IP that is unsupported for Qos.Therefore,it will be significant to establish highly reliable and real-time communicationnetwork to solve the present problem of smart gird. Combined with the trait ofpower communication, this paper carries on research with two sides-invulnerabilityand real-time performance.Firstly, this paper introduces communication system of smart grid and MPLS aswell as the superiority. Also, it devides the construction according to thecommunication trait. It analyzes the necessity using MPLS in power communicationnerwork. Based on this, this paper divides the power communication equipmentaccording to MPLS. With OPNET simulation software, it simulates on thesuperiority of MPLS to verify load balancing.Secondly, this paper analyzes the invulnerability of network and optimizes it. Itputs forward a kind of artificial cobweb which can provide multi-path routing. Itcalculates among different kinds of topologies with new invulnerability analyticalmethod and selects from two kinds of power communication network schemes. Thenthis paper optimizes on the invulnerability of actual power communication topologyand verifies the validity of the algorithm.Thirdly, based on the articial cobweb structure, this paper designs a kind of fullmesh and average bandwidth routing algorithm based on MPLS. It explains theparameter of the algorithm and selection of routing. It proves that the routingalgorithm can realize load balancing and reduce network delay by contrastivesimulation. Combined with actual business in smart gird, it proves that the algorithmcan be used for load-balancing and fast rerouting to improve the real-timeperformance of power communication by OPNET simulation.Finally, this paper completes the simulation and physical verification orientedto its interior communication problem. It designs double-switch and hot-standbynetwork scheme based on the artificial cobweb structure with VLAN and HSRP. Inthe OPNET software, it proves that the scheme raised in this paper is superiorcompared with traditional one-switch scenario. The physical verification is operated on the switch experimental platform with MPLS that supplements the simulation.The experimental results show that the double-switch and hot-standby networkscheme can be guarantee the safety, real-time performance and reliability ofcommunication.