智能变电站全站统一式通信网络研究

Research on the Unified Communication Network of the Intelligent Substation

智能变电站以全站信息数字化、通信平台网络化、信息共享标准化为基本特征。优良的网络性能对实现智能变电站的高级功能十分重要。文章针对全站统一式的网络报文传输延时进行了分析,并进一步研究了VLAN划分方法和原则,通过VLAN和优先级标记来降低网络负载和信息数字化数据传输延时。最后在OPNET环境下,验证了在故障的极端情况下,VLAN方案划分的合理性和在降低网络时延方面的有效性。

Intelligent substationsare characterized by digitalized information, network communication platforms and standardized information sharing. Excellent performance of the network plays an important role in realizing advanced functions of intelligent substations. This paper analyzed the delay of network packet transmission throughout the station and further studied the classifying methods and principles of the VLAN project, using the VLAN project and priority tagging to reduce the network load and the transmission delay of the information-digitalized data. Finally, under the OPNET environment the paper verified the rationality in the division of the VLAN project and the effectiveness in reducing the network time delay in such extreme cases as breakdown.