摘要
数字同步网是现代通信网的支撑网,目前电力通信数字同步网的定时信号普遍采用SDH的STM-N线路信号传送,只能实现频率同步。随着电力通信和信息化的发展,对时间同步的需求也日益增加。如何构建既能提供频率同步又能提供时间同步的数字同步网是电力通信发展面临的难题,山西电力信通公司通过对精确时间同步协议PTP的分析研究,采用在SDH电路E1通道上的传输PTP协议的方式来组建数字同步网,经过试验网的在线测试,频率同步和时间同步性能满足电网通信的要求。项目研究提供了可行的一种时频融合的数字同步网组网方案,促进了电力通信数字同步网的发展。
Digital synchronize network is telecommunication supporting networks, the transmission of synchronization by STM-N line signal of SDH is mostly used in electrical power communication networks, but only frequency synchronization can be transmitted. The demand for time synchronization is more and more following by the development of electric power communication networks. Now the devel- opment of electric power communication networks is facing a challenge that is how to build a digital synchronization network to provide both frequency and time synchronization. Engineers in State Grid Shanxi Power Information and Communication Branch Company anallze and research the characteristics of Precise Time Protocol（ trFP）, and take the way which PTP is transmitted in E1 channel of SDH networks to build digital synchronization networks, After detail test in experimental network, the performance of frequency synchronization and time synchronization meet the requirements of electrical power communication. The project researches provider a feasible synchronization network combined frequency and time, and promote the development of digital synchronization networks in electrical power communication networks.
出处
《自动化与仪器仪表》
2017年第10期144-147,150,共5页
Automation & Instrumentation
基金
山西电力信通公司2016年科技项目"高精度频率同步恢复技术研究及验证"
关键词
频率同步
时间同步
PTP
SDH
frequency synchronization
time synchronization
PTP
SDH
