基于时间敏感网络技术的组网采样同步方案  

A Networking Sampling Synchronization Solution Based on Time-Sensitive Networking

作　　者：李响[1] 李彦[1] 张晓宇[1] 许宗光[1] LI Xiang;LI Yan;ZHANG Xiaoyu;XU Zongguang(NR Electric Co.,Ltd.,Nanjing 211102,China)

机构地区：[1]南京南瑞继保电气有限公司,南京211102

出　　处：《浙江电力》2022年第6期15-21,共7页Zhejiang Electric Power

摘　　要：智能变电站中通过以太网实现模拟量采样信号的数字化传输与共享,以太网的端口冲突问题会导致网络数据传输延时不确定,因此智能变电站建设实践中依然以直采方案为主。针对现有的组网采样方案在安全性方面的不足,提出基于时间敏感网络技术的组网采样同步解决方案,通过时隙门控发送机制消除端口冲突,规划采样数据的传输延时,实现确定性传输效果。实验与推演的结果证明,该方案满足继电保护设备性能要求,适用于典型规模智能变电站网络。The digital transmission and sharing of analog sampling signals is realized through Ethernet in intelligent substations. Ethernet port conflicts will give rise to delay uncertainty of network data transmission. Therefore,the peer-to-peer mode is still in use in constructing intelligent substations. Given the deficiency in security of the existing networking solutions,a networking sampling synchronization solution based on time-sensitive networking technology is proposed to achieve deterministic transmission by port conflict elimination and transmission delay planning of sampling data through a time-slot gated transmission mechanism. The experimental and extrapolated results prove that the solution can meet the performance requirements on relay protection equipment and applies to intelligent substation networks in typical scale.

关 键 词：时间敏感网络 时隙门控 延时规划 采样同步 

分 类 号：TM727[电气工程—电力系统及自动化]