基于同步数字体系的子网连接保护研究与应用  

RESEARCH AND APPLICATION FOR SUB NETWORK CONNECTION PROTECTION BASED ON SDH

作　　者：邢宁哲[1] 

机构地区：[1]中国科学院研究生院,北京市海淀区100039

出　　处：《电网技术》2004年第18期66-69,共4页Power System Technology

摘　　要：子网连接保护是同步数字体系(Synchronous DigitalHierarchy,SDH)通信网的一种保护恢复策略。作者对子网连接保护技术在电网通信、保护专业中的应用原理、特点进行了分析,提出了子网连接(Subnetwork Connection,SNC)保护的完全和不完全两种模式以及实现它们的技术条件,并与SDH路径保护和PCM的 2M路由保护方式进行了比较,最后讨论了利用SNC保护技术复用继电保护通道的可靠性问题。Sub Network Connection protection is one of the protection and restoration strategies in Synchronous Digital Hierarchy (SDH) communication network. The principle and features of applying Subnetwork Connection (SNC) protection to the communication and protection in power system are analyzed, its two protection modes, i.e., complete mode and incomplete mode, and the technological conditions to implement them are put forward. The SNC protection mode is compared with both path direction mode in SDH and the route mode with 2Mb/s terminals in PCM. Finally, the reliability of multiplexing relay protection information by SNC is discussed.

关 键 词：子网连接保护 同步数字体系 SDH 保护恢复 路由保护 路径保护 PCM 网通 策略 模式 

分 类 号：TM77[电气工程—电力系统及自动化] TN914[电子电信—通信与信息系统]