An improved process-level networking scheme of smart substation is proposed.The virtual local area network technology is used not only to realize the precise control of network messages and ensure the transmission performance of process-level network,but also to transfer the data to the network recording analyzers and fault-wave recorders via several optical interfaces according to the total network data traffic and the data reception capacity recommended for single optical interface of these recording devices,which effectively realizes the reliable data reception of these recording devices when the network traffic of smart substation is larger,especially when the network traffic is bigger than the reception capacity of 100 M Ethernet optical interface.Compared with the existing solutions,the proposed scheme fully takes advantage of information sharing in smart substation to effectively avoid the large investment increase and the large consumption of directly-connected fibers and optical receiving modules,which has been widely applied in Hunan power grid.%提出了一种智能变电站过程层组网改进方案.在利用虚拟局域网(VLAN)技术实现网络报文精确控制、确保网络传输性能的同时,参照站内总的网络数据流量和网络记录分析仪以及故障录波装置单光口推荐的接收容量,将经单光口发送至网络记录分析仪以及故障录波装置的数据,借助VLAN技术分为几个光口分别进行传输,有效解决了当智能变电站网络传输流量较大,特别是网络传输流量超出网络记录分析仪以及故障录波装置的百兆以太网光口容量时的数据可靠接收问题.与现有解决方案相比,所提改进方案充分发挥了智能变电站站内信息共享的优势,有效避免了投资成本的大幅增加及直连光纤和光接收模块的大量消耗,并已广泛应用于湖南电网.
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