基于IEC 61850标准的变电站智能电子设备建模和性能仿真

为研究变电站自动化系统(substation automation system,SAS)快速报文传输问题,利用OPNET软件对智能电子设备(intelligent electronic devices,IED)进行模型构建,并搭建基于IEC61850标准的简单SAS。在此基础上,分别对10 Mbps、100 Mbps局域网以及总线拓扑结构、星形拓扑结构进行仿真实验,分析在不同局域网速率和不同拓扑结构下快速报文传输延迟时间的差异。仿真结果表明:总线拓扑结构可适用于IEC61850-5-1:2003标准定义的P1和P2类小型、低采样频率SAS,但网速较低时采样频率会影响系统性能;星形拓扑结构能提供更好的网络性能,IED数目的增加对网络性能影响很小。

Intelligent Electronic Devices Modeling and Performance Simulation of Substation Based on IEC 61850 Standard

For studying rapid message transmission of substation automation system, this paper takes OPNET software to con- struct model for intelligent electronic devices and set up simple SAS based on IEC 61850 standard. On the basis of it, it car- ries out simulating experiments for 10 Mbps and 100 Mbps local area networks, bus topology and star topology, analyzes differences of rapid message transmission delay time under with different speed rate of local area networks and topology. Simulating results indicate that the bus topology is suitable for SAS of small size and low sampling frequency of P1 and P2 type but when wire speed is low the sampling frequency may affect system performance~ the star topology can provide better network performance and increase of IED numbers only affect network performance small.