RCS-900系列保护装置的同步通信时钟  

Clock Setting for Synchronous Communication of RCS-900 Series Protection Equipment

作　　者：王爱玲[1] 蔡敏[2] 金华锋[1] 陈新南[3] 王芊[1] 宗洪良[1] 郑玉平[1] 

机构地区：[1]南京南瑞继保电气有限公司,江苏省南京市211100 [2]华北电力大学电气工程学院,北京市100085 [3]中国南方电网电力调度通信中心,广东省广州市510620

出　　处：《电力系统自动化》2006年第24期53-56,共4页Automation of Electric Power Systems

摘　　要：RCS-900系列保护装置采用同步通信方式,通过64kbit/s,2048kbit/s复用通道或专用光纤方式,实现两侧保护装置信息交换。从装置通信模块功能出发,介绍了通信码型变换方案、信息接收模块时钟提取功能,以及信息发送模块时钟选择方式。说明了接收端装置通过从码流内提取时钟信号作为信息接收时钟解决了通信“位同步”问题。对于64kbit/s复用通道,通过介绍PCM终端内部的收发模块的时钟配合关系,指出了保护装置通信发送时钟须采用“从—从”方式。对于专用光纤方式,须采用“主—主”方式或“主—从”方式。对于2048kbit/s复用通道,打开输出再定时功能时,须采用“从—从”方式,否则可采用“主—主”方式或“主—从”方式。The RCS-900 series protection equipment uses synchronous communication to exchange information by the multiplex channel or fiber optic core in 64 kbit/s or 2 048 kbit/s. This paper describes the scheme of pattern transfer, the function of clock pick-up from the receiving wave, clock setting for information transmission, and how the protection equipment maintains bit synchronization. By introducing the relationship between the transmission clock and the receiving clock in the PCM terminal, it is also pointed out that the protection equipment should adopt the ＂slave-slave＂ communication clock mode for the 64 kbit/s multiplex channel, and ＂master master＂ or ＂master-slave＂ mode for the fiber optic core mode. For 2 048 kbit/s multiplex channel, the protection equipment should adopt the ＂slave-slave＂ mode while the retiming function is on and ＂mastermaster＂ or ＂maste^slave＂ mode while the retiming function is off.

关 键 词：同步通信 复用通道 位同步 系统同步 再定时 

分 类 号：TM774[电气工程—电力系统及自动化] TM73