一种基于时间敏感网络的变电站确定性网络架构优化方法  

TSN⁃based definite network architecture optimization method for substation

作　　者：周熠 程程 周飞飞 何迎利 李菁竹 ZHOU Yi;CHENG Cheng;ZHOU Feifei;HE Yingli;LI Jingzhu(State Grid Electric Power Research Institute Co.,Ltd.,Nanjing 210000,China;Nanjing NARI Information and Communication Technology Co.,Ltd.,Nanjing 210000,China;Economic and Technological Research Institute of State Grid Shandong Electric Power Company,Jinan 250001,China)

机构地区：[1]国网电力科学研究院有限公司,江苏南京210000 [2]南京南瑞信息通信科技有限公司,江苏南京210000 [3]国网山东省电力公司经济技术研究院,山东济南250001

出　　处：《现代电子技术》2023年第21期177-182,共6页Modern Electronics Technique

基　　金：国家电网有限公司总部科技项目自主“电力时间敏感网络交换芯片研制与应用”(SGSDJY00GPJS2200264)。

摘　　要：新型智能变电站网络基于传统以太网尽力而为转发机制,在突发大流量时难以保证敏感流量可靠传输。文中提出一种基于TSN(时间敏感网络)的变电站网络架构优化方法,根据敏感SV报文的传输特性,采用TSN协议簇中IEEE 802.1Qbv、IEEE 802.1AS结合的时间门控调度机制,在敏感流量到来的时隙开辟专用通道保证其以最佳时延通过;采用TSN协议簇中IEEE 802.1Qci技术对网络所有流量进行过滤管理,保障敏感流量能进入专用通道并阻挡其他流量误入。经模拟变电站实际场景组网验证表明,相对于传统以太网,时间敏感网络能确保网络拥塞时敏感流量能够以最大时延2.17μs、平均抖动0.16μs的最佳时延抖动传输。The new smart substation network is based on the traditional Ethernet best⁃effort forwarding mechanism,which is difficult to ensure the reliable transmission of sensitive traffic when large traffic bursts.In view of this,a substation network architecture optimization method based on TSN(time⁃sensitive network)is proposed.According to the transmission characteristics of sensitive SV messages,a time⁃gated scheduling mechanism combining IEEE 802.1Qbv and IEEE 802.1AS in TSN protocol cluster is adopted.A dedicated channel is opened in the time slot of sensitive traffic to ensure that it passes with the most proper delay.The technology of IEEE 802.1Qci in the TSN protocol cluster is used to filter and manage all of the network traffic,so as to ensure that the sensitive traffic can enter the dedicated channel and prevent other traffic from entering.The actual networking verification of simulated substation shows that,in comparison with the traditional Ethernet,the TSN can ensure the optimal time⁃delay jitter transmission of sensitive traffic with the maximum delay of 2.17μs and the average jitter of 0.16μs when the network is congested.

关 键 词：时间敏感网络 智能变电站 时间门控调度机制 流过滤管理策略 时延分析 敏感流量 

分 类 号：TN711.1-34[电子电信—电路与系统]