摘要
光纤通道作为纵联保护的通信通道,具有传输速率高、抗干扰能力强、安全可靠性高、能长期保持不间断传输信号的特点,在500kV线路保护中得到广泛应用。文章介绍了光纤纵联保护的原理、光纤通道作为保护通道的特点和继电保护装置与光纤通道的几种连接方式及各自的时钟设置。根据光纤纵联保护在内蒙古500kV电网的应用,提出了在运行维护工作中应该注意的几个问题,以提高保护的正确动作率,确保电网安全运行。
Optical fiber channels is widely used as pilot protection channel in 500 kV transmission line protection because of its high transmission rate, strong anti-interference ability as well as high reliability and security. This paper introduces the principle of pilot protection, analyses the specialties of optical fiber channel while it is used as protection channel, discusses the connection mode of optical fiber channel with relay protection devices and their clock settings. Based on the application of optical fiber pilot protection in the 500 kV power grid in Inner Mongolia, some attentive problems in routine maintenance are also presented in the paper.
出处
《电力系统通信》
2009年第5期59-61,共3页
Telecommunications for Electric Power System
关键词
继电保护
光纤通信
纵联保护
运行维护
relay protection
optical fiber communications
pilot protection
operation and maintenance
