变电站过程层报文分网传输性能的仿真分析

Simulation Analysis of Packet Transmission Performance Through Different Network in Substation Process Layer

基于IEC61850标准的变电站过程层网络是一次设备与二次设备间的信息交换桥梁,承载着各种智能电子设备IED(intelligent electric device)交换数据的实时传输任务。针对目前智能变电站采样值SMV(sampled measured value)与面向对象的变电站通用事件GOOSE(generic object oriented substation event)报文的分网传输结构,利用OPNET仿真平台建立过程层网络以及IED设备的仿真节点模型和网络模型,研究分网传输报文方式下的网络性能及其影响因素。仿真结果表明,采用100 Mbps带宽的以太网和虚拟局域网VLAN技术实现SMV和GOOSE报文分网传输时,实时性较好且时延抖动小,适于现阶段智能变电站的工程实际。

The process level network in substation based on standard IEC61850 is the bridge to exchange information between the primary device and the secondary device,and the real-time exchange data transmission task of all kinds of the intelligent electric device（IED） is carried.The process level network as well as simulation node model and network model of all kinds of IED equipment are built by OPNET simulation software,and network performance and its influencing factors in diverse network transmission message are researched for SMV and GOOSE message transmission in divided network structure of intelligent substation at present.The simulation results show that when ethernet of 100 Mbps bandwidth and virtual LAN technology are used to achieve the SMV and GOOSE message transmission in diverse network,the good real-time and the little delay chattering,which is suitable for engineering projects in intelligent substation at the present stage.