核电站DCS主从控制器切换后信号跳变的分析与解决  

Analysis and solution of signal jump occurring after switching of host-slave controllers in DCS of nuclear power station

作　　者：程保华 张合厂 熊科 曲东良 

机构地区：[1]中广核工程有限公司,广东深圳518124 [2]北京广利核系统工程有限公司,北京100094

出　　处：《现代电子技术》2015年第19期140-142,共3页Modern Electronics Technique

摘　　要：为解决某核电机组的DCS控制器在增量下装和主从切换后发生信号跳变的问题,深入研究了控制器的热备冗余、增量下装、主从切换机制以及DCS内部逻辑组态。经过研究发现,在DCS控制器增量下装机制下的不规范逻辑组态,使控制器在主从切换后不能保持部分信号的状态,经过对此类故障隐患的全面排查和解决,彻底消除了DCS控制器的信号跳变风险。In order to solve the problem that signal jump of DCS controller in the process of incremental downloading and after switching of host？slave controllers,an in？depth research was made for the hot standby redundancy,incremental downloading, host？slave switching mechanism and logic configuration within DCS. The study show that the irregular logic configuration under DCS controller incremental downloading mechanism made the controller unable to keep the state of part signals after host？slave switching. After a thorough investigation and resolution,the signal jump risk of the DCS controller was eliminated.

关 键 词：核电站 DCS 控制器 主从切换 信号跳变 

分 类 号：TN911.6[电子电信—通信与信息系统] TP202.2[电子电信—信息与通信工程]