基于电力通信网的时间同步系统建设研究  

Research on Construction of Time Synchronization System Based on Electric Power Communication Network

作　　者：王妙心[1] 滕玲[1] 

机构地区：[1]中国电力科学研究院,北京100192

出　　处：《电力系统通信》2012年第12期30-34,共5页Telecommunications for Electric Power System

摘　　要：根据电力系统对时间同步要求高精度和高安全性的原则,在现有基础上采用IEEE1588v2精确时间同步协议传输时间同步信息,建立北斗/GPS双模授时和SDH网络地面传输授时相结合的时间同步网络。系统能够实现多个时钟源灵活切换,空中与地面授时互备。通过建立模拟测试方案对该授时系统的精确性和可靠性进行验证,测试结果表明,时间同步系统不仅提高了系统的可靠性,而且提高了同步的精度,更好地支撑电力系统通信网络。According to the requirements of high precision and high safety of power system for time synchronization, this paper uses IEEE 1588v2 precise time synchronization protocol to transmit the time synchronization information, establishes the time synchronization network which combined GPS dual-mode timing and SDH network transmission timing. The system can realize the flexible switching of a plurality of clock source and mutual backup for timing. It validates the accuracy and reliability of the system through establishing simulation test scheme. Test results show that the system not only improves the reliability of system, but also improves the precision of system, which is benefit to the electric power communication network.

关 键 词：同步网络 PTP 全网同步 

分 类 号：TN915[电子电信—通信与信息系统]