一种DCS系统冗余过程控制器冗余性能测量方法  

A Kind of Measurement Method for the Redundancy Performance With the Redundancy DPU of the DCS System

作　　者：张明惠 董胜刚 Zhang Minghui;Dong Shenggang(Nanjing SAC Valmet Automation Co.,Ltd.,Nanjing,210032,China)

机构地区：[1]南京国电南自维美德自动化有限公司,南京210032

出　　处：《仪器仪表用户》2022年第7期96-99,共4页Instrumentation

摘　　要：为了了解分散控制系统的冗余控制器的冗余性能是否能够满足现场稳定性、安全性和可靠性的要求,首先介绍了DCS系统过程控制器的冗余性能对系统的影响以及影响冗余性能的因素;其次,对冗余过程控制器的冗余性能中的切换时间和同步时间给出了一种精确测量实现方法。该方法利用过程控制站本身的模拟量卡件通道斜坡输出和采用独立于系统的高速数据采集器采集数据,对切换过程中采集到的不平滑的斜坡曲线进行数据分析和计算,得出切换时间和同步时间的定量数值。此测量方法可适用于当前市面上各家分散控制系统,可以进行新老系统、不同厂家系统的横向对比,从而对不满足需求的指标进行软硬件的重新配置和升级改造。In order to understand whether the redundancy performance of the redundant DPU of the DCS system can achieve the demand of stability,safety and reliability,firstly,the influence of the redundancy performance of the DCS system and the factors affecting the redundancy performance are introduced;Secondly,an accurate measurement method for the takeover time and syn-chronization time is given.This method uses the analog card channel slope output and uses the high-speed data collector inde-pendent of the DCS system to collect data,analyzes and calculates the data of the uneven slope curve collected by the collector,and obtains the quantitative values of the takeover time and synchronization time.This measurement method can be applied to various DCS systems in the current market,so as to make a horizontal comparison between new and old systems and systems of different manufacturers,then reconfigure and upgrade the software and hardware that do not meet the demand.

关 键 词：分散控制系统 过程控制站 冗余 切换时间 同步时间 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]