摘要
从继电保护专业的角度介绍了500 kV线路纵联保护数字通道的原理,包括保护装置和通信设备的接口方式,保护装置和通信设备之间的时钟关系,纵联保护对通道性能的要求,以及通道延时对继电保护的影响。介绍了实际运行中遇到的问题,从继电保护专业的角度提出了在设计、施工和维护中应注意的问题和解决方法以及查找故障和使用2 Mb it/s数字通道传输保护信号的方法。
This paper introduces principle of digital channel for 500 kV line longitudinal protection from the viewpoint of the relay protection, including the interface way and clock relation of the protection device and the communication equipment, the needs of longitudinal protection to the channel performance, as well as influence of channel time delay to relay protection. It introduces the problems probably occuring in actual operation. The problems that should be noticed and the solutions in design, construction and maintenance are introduced. Fault seeking method and the way of 2Mhit/s digital channel transmit protection signal are also proposed.
出处
《继电器》
CSCD
北大核心
2005年第20期36-39,共4页
Relay
关键词
纵联保护
数字通道
光电转换器
longitudinal protection
digital channel
optical-electricity switch
