一种线路保护复用通道故障自诊断机制  

A Fault Self-diagnosis Mechanism for Multiplexing Optical Channels of Relay Protection

作　　者：蔡菠 谈浩[1] 李彦[1] 李响[1] CAI Bo;TAN Hao;LI Yan;LI Xiang(National Energy Power Control and Protection Research and Development Center (Nanjing NR Electric Co., Ltd.), Nanjing 211111, China)

机构地区：[1]国家能源电力控制保护研发中心(南京南瑞继保电气有限公司),江苏南京211102

出　　处：《电力工程技术》2017年第6期73-77,共5页Electric Power Engineering Technology

摘　　要：针对线路保护复用光纤通道故障点定位的问题,在数字复接装置及保护装置上,通过检测物理层报文的编码有效性,识别通道中各位置故障标志;通过扩充通信报文保留字段,使各位置故障生成状态戳;在数字复接装置上使用心跳帧机制,解决通道故障时状态戳交换问题,通道内故障点位置能实时反映在保护装置上,实现了复用通道故障点位置在线自诊断功能。Aiming at fault point locating problem of the line protection multiplexing optical channels,the digital multiplexing device and protection device detect the channel fault flags by the validity of physical layer encoding,generate a status stamp at reserved field by expanding communication message,and use heartbeat frame mechanism of digital multiplexing device to solve the problem of exchanging status stamp when error occurs in channel.The fault point location of the channel can be detected on the protection device directly.Fault self-diagnosis mechanism is implemented for multiplexing optical channels.

关 键 词：复用通道 故障诊断 线路保护 心跳帧 

分 类 号：TM774[电气工程—电力系统及自动化]