The operation of the smart grid requires a lot of data.How to quickly and reliably transmit,process and store these data becomes a necessary subject of effectively managing the smart grid.A three-tier exchange of virtual local area network (VLAN) was designed based on the analysis of the basic characteristics of smart grid management.The distributed intelligent grid data management system was divided into many sub-systems that was not geographically limited and had the clear logical communication unit.So it can effectively reduce the network congestion,and improve the efficiency of smart grid data processing.%智能电网运行过程的管理需要海量的数据.如何快速可靠地传输、处理和存储这些数据成为有效管理智能电网的必要课题.在分析智能电网管理基本特性的基础上,设计了三层交换的虚拟局域网(VLAN),将分布式智能电网数据管理体系有效划分为不受地理位置限制而逻辑通信单元清晰的子系统,可以有效减少网络的拥堵,提高智能电网数据处理的效率.
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