Analysis and application of the smart substation process level network

In order to verify the networking feasibility of the information process level of smart substation,this paper first analyzes and points out the star network is the best network solution of smart substation process level.Through the analysis of network modes of the process layer,network information flow,transmission delay and networking technology,it puts forward the technical scheme of combo network of SMV sampling information,GOOSE substation universal event information and IEEE1588(or SNTP) clock synchronization information.Adopting VLAN tag technology can reduce network broadcast data and improve the utilization rate of network bandwidth.Applying IEEE 802.1P flow priority control technology can guarantee the timeliness and orderliness of information transmission.Using rapid spanning tree technology can achieve network reconfiguration and avoid the network storm.By simulation test and engineering verification,its performance specifications fully meet the technical specifications of the substation,ensuring safe and reliable of the substation,and its the technical solutions are reliable and feasible.