一起500kV线路远跳装置通道异常时的问题分析与改进  

Analysis and improvement for 500 kV lines tele-tripping equipment with abnormal channel

作　　者：陈晓彬[1] 

机构地区：[1]广东电网公司揭阳供电局,广东揭阳522000

出　　处：《电力系统保护与控制》2010年第24期209-212,共4页Power System Protection and Control

摘　　要：针对在变电站保护定检中发现一种常见的500kV线路载波通道的连接方案在尾纤通道异常时会造成开关远跳保护拒动的安全隐患,对目前广东电网两种常用的500kV线路载波通道的不同连接方案存在的问题进行深入分析。提出了首先增加通信机房光纤接口设备至主控室监控后台的监控信号实现对该设备的监控,优先采用保护通道改造方案,结合相关工程将线路载波通道改造成光纤通道。若短期内无法具备两路光纤路由的话可考虑采用更换载波机设备的解决方案。A hidden safety trouble is found in regular check of substation protection equipment.If it is not eliminated,the tele-tripping equipment will fail to trip when the connection scheme for 500 kV line carrier wave channel is abnormal in the pigtail channel.Application problems of two usual connection schemes for 500 kV line carrier wave channels in Guangdong power grid are analyzed in deep.This paper proposes that adding monitoring signal from optical fiber interface device in communication room to main control room firstly,and later, combining with relevant project, protection channels are modificated from line carrier wave channels into optical fiber channels, which is prior to other methods.If two path optical fibers can not be provided, the solution of replacing the carrier wave device will be considered.

关 键 词：通道异常 光纤通道 载波通道 远跳 保护拒动 

分 类 号：TM774[电气工程—电力系统及自动化]