基于IEEE1588的变电站网络时钟同步的研究与应用

Investigation and Application of Network Time Synchronization in Substation Based on IEEE1588

随着数字化变电站的大规模建设,各智能设备对时间同步系统的精度要求也越来越高。本文介绍了IEEE1588协议的工作原理。针对数字化变电站的实际需求,提出了一种基于IEEE1588的变电站网络时钟同步系统的可行性方案,给出了时钟设备的冗余配置及其功能实现;并探讨了本系统方案中主时钟确定的详细过程以及系统偏差和延时的具体计算方法,为实现变电站内部的高精度网络时钟同步提供了参考。

With the large-scale construction of the digitized substations,the requirements of the time synchronism precision in many intelligent devices are getting higher and higher.The working principle on IEEE1588 was introduced.In view of the digitized substation＇s actual demands,a feasible design and configuration synchronization network based on the IEEE1588 was proposed for substations.Then the redundancy configuration method of clock unit and its function implement were given.The detailed process of the determination of master clock and the concrete computational methods of system offset and delay were also discussed in this system design.The synchronization network scheme proposed herein provided the reference for internal high accuracy network clock synchronization in substation