500kV变电站失去监控的原因分析及解决方案  

Cause Analysis and Solution to Monitoring Absence in 500 kV Substation

作　　者：计荣荣[1] 叶海明[1] 单金华[1] 张俭清 吴米佳[1] 

机构地区：[1]国网浙江省电力公司检修分公司,杭州311232

出　　处：《浙江电力》2017年第2期26-29,42,共5页Zhejiang Electric Power

基　　金：浙江省电力公司群众性科技创新项目(5211MB160010)

摘　　要：500 kV变电站远动机出现IEC 104通道频繁关闭、重连现象。调度端多次总召唤却出现全零数据、刷屏现象,影响调度正常监控,并导致调度端失去该站监控。分析了该问题产生的具体原因,通过改造装置直流供电回路、优化远动机主CPU插件与NET通信插件互动机制以及完善NSC300与AK1703的通信参数设置等措施有效地解决了该问题。IEC 104 channel of remote terminal unit in 500 kV substation frequently disconnected and recon-nected. With multiple general calling of the dispatching terminal,there occurred all zeroes and screen flood-ing, which affects normal monitoring of dispatchers and substation monitoring absence in the dispatching ter-minal. This paper analyzes the specific reasons and proposes its solution. The problem is solved effectively by DC power supply circuit reconstruction,interaction mechanism optimization between the CPU plug-in and the NET communication plug-in as well as communication parameters improvement of NSC300 and AK1703.

关 键 词：监控系统 通信机制 远动机 总控单元 

分 类 号：TM63[电气工程—电力系统及自动化]