摘要
本文针对国内大型燃煤火电机组、国产DCS与DEH一体化控制系统在额定工况下首次完成在线伺服卡更换的实践,揭开了特殊方式下DEH快速控制系统软硬件相互紧密耦合的特性,克服了伺服子卡隐性故障排查和在线操作的高风险挑战,总结出了一套安全有效的实施方案,为解决高精端自动控制系统的维护难题提供范例。
In this paper,for the domestic large-scale coal-fired thermal power units,domestic DCS and DEH integrated control system,it is the first time to complete the practice of online servo card replacement under rated working conditions.It reveals the characteristics of software and hardware coupling of DEH fast control system under special mode,overcomes the high-risk challenges of hidden fault diagnosis and online operation of servo card,and summarizes a set of safe and effective implementation scheme,which can provide reference for the future.This paper provides an example to solve the maintenance problem of high precision automatic control system.
出处
《自动化博览》
2021年第8期70-76,共7页
Automation Panorama1
关键词
国产一体化
伺服卡
在线更换
手动整定
风险控制
Domestic integration
Servo card
Online replacement
Manual setting
Risk control
