迟宗岭     ★北京广利核系统工程有限公司

摘要：在CPR1000核电项目机组工程中，非安全级核电站数字化仪控系统 （NC-DCS系统）应用软件平台采用的是Macs6.2.0系统，涉及到的第三方设 备不参与逻辑运算，且只在HMI流程图中显示和报警的数据，均采用通讯站进 行数据传输，涉及逻辑运算的则采用硬接线方式直接采集数据。通讯站硬件 采用的是一款OAMA01A（或OAMA03A）型工控机嵌入式微型计算机，一款无 风扇全封闭嵌入式微型计算机。软件采用的是以Linux-2.6.16.25为蓝本的裁剪 版的操作系统，由于Linux系统在工程应用上有许多优点，便于工程师编程和 调用程序，同时，也是一款开放性的操作系统，因此受到编程者的青睐。在 CPR1000核电机组项目调试和运行过程中，有时发现部分通讯站上传的数据点 显示迟缓，刷新频率明显和设计预期不相符。为此本文结合了现场调试经验， 分析了数据上传迟缓的原因及后续采取的措施，详细描述了链路参数的设置规 则，对由链路参数设置或者操作过程不规范等原因，导致L2层数据显示迟缓的 根源进行了总结分析，为后续机组优化参数提供了参考，同时也为同类型机组 及今后华龙一号的调试提供借鉴。

关键词：通讯站；链路参数；故障

Abstract: In the CPR1000 nuclear power project, the digital instrument control  system(NC-DCS system) platform for non-safe nuclear power plants uses Macs  6.2.0, which involves third-party equipment that does not participate in logical  operations. And only the data displayed and alerted in the HMI flow chart uses  communication stations for data transmission, and hard-wired methods for logic  operations are used. The communication station hardware uses an OAMA01A  (or OAMA03A) industrial control machine embedded microcomputer, a fan-free  fully enclosed embedded microcomputer. The software uses a tailored version  of the operating system based on Linux-2 .6.16.25. Since the Linux system has  many advantages in engineering applications, it is easy for engineers to program  and invoke programs. At the same time, it is also an open operating system. It  is therefore favored by programmers. During the debugging and operation of  the CPR1000 nuclear power plant project, it is sometimes found that the data  points uploaded by some communication stations are slow to display, and the  refresh frequency is obviously inconsistent with the actual scene. In this paper,  combined with the field debugging experience, the reasons for the delay in  data upload and the measures taken are analyzed. At the same time, the setting  rules of link parameters are described in detail, and the link parameters are set  or the operation process is not standardized. The root causes of the delay in L2  layer data display are summarized and analyzed, and operational experience  feedback is compiled to provide reference for the optimization parameters  of subsequent units. At the same time, it also provides reference for the  commissioning of the same type of unit and Hualong No. 1.

Key words: Communication station; Link parameters; Faults

点击预览：基于非安全级DCS通讯站中链路参数设置分析及研究.pdf

摘自《自动化博览》2021年5月刊