Study On Micro-grid Communication System Based On IEC 61850 Standard

In recent years,the energy crises and environmental problems gradually aroused widespread attention,and caused a major adjustment of energy structure in the world.Renewable energy efficiency and practical method have thus become the focus of research.Micro-network technology is a form of efficient utilization of renewable energy,the renewable energy that is widely connected to with the electricity grid has the milestone significance.Communication system for realizing business exchange of the flow of information between micro-network and big power grid is one of the micro-network for the rapid development of network technology in the field.This thesis presents the micro network communication system and design,which has practical industrial application of IEC61850 communication protocols and intelligent substation technology,On basis of summarizing progress of micro network developed in domestic and abroad in recent years,micro-network concepts that proposed by various countries and regions in the world were compared.Then,application in micro network communication,such as IEC61850 standard,was briefly introduced.After that,the substation automation system of three layer structures as substation layer,spacing layer and process layer is analyzed in detail,and the IEC61850 standard defined by structure with three layers is used in micro network communication system.The performance of network communication was simulated by using software OPNET in the communication system simulation for modeling their business.Finally,with setting up different forms of communicating network topology structure,the performance of the micro network communication network is analyzed and compared,and the effect of the information flow in the micro network communication system under different topology structure is compared.The simulated results prove that the proposed micro-network communication architecture can effectively solve the problem of communication between micro-nets and big power grid,which has advantages of a small delay,low packet loss rate and high flexibility and laying a foundation for the practical application of the proposed micro network communication topology.