同步性能对继电保护终端影响的测量  

Test of the Influence of Synchronization Performance in Communication System on Relay Protection Terminal

作　　者：赵宏波[1] 丁慧霞[1] 汪洋[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》2011年第1期69-72,共4页Telecommunications for Electric Power System

摘　　要：同步对数字信号的传输非常重要。从通信的角度看,继电保护终端设备是一种数字节点设备,通信系统同步性能将直接影响继电保护终端间的传输性能。文章对继电保护设备作为通信系统时钟源、各网元自由震荡及外加压力情况下系统的同步性能作了测试分析。测试的结果表明,在同步性能劣化的情况下,系统会出现指针调整,但在短时间的测试中,继保终端没有出现误码现象。Synchronization is very important to digital signal transmission.From the perspective of communication,relay protection terminal equipment is digital equipment.Communication system synchronization performance can directly influence the transmission properties of relay protection terminal.This paper analyses the test on synchronization performance under the circumstances of the relay protection equipment as the clock source of communication system,free oscillation of the network elements and with applied pressure.Test results show that when the synchronization performance degrades,pointer adjustment will appear in the system.During short time testing,the relay protection terminal shows no error.

关 键 词：同步 继电保护终端 指针调整 

分 类 号：TN919.34[电子电信—通信与信息系统]