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首页> 外文会议>International symposium on software reliability, industrial safety, cyber security and physical protection of nuclear power plant >Research on Maintenance Network Design Based on Nuclear Power Station Safety DCS System
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Research on Maintenance Network Design Based on Nuclear Power Station Safety DCS System

机译：基于核电站安全DCS系统的维护网络设计研究

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During the operation of the safety digitalized instrument and control system of nuclear power plant, it is necessary to monitor the data of online operation in real time. The communication between the engineer station and the safety level shall ensure the real-time, accuracy, reliability and safety requirements of data monitoring. How to design the maintenance network between non-safety engineer station PC and safety instrument and control system is a difficult problem in the industry of nuclear safety DCS research and design. The FirmSys is the first digital nuclear safety instrument and control system platform successfully developed and appraised in China. This paper is based on the networking characteristics of the data communication network in the FirmSys. A data real-time monitoring design based on 802.3 protocol is proposed. The design is based on standard MAC frame structure, and a new data frame format is formed by adding new data segments to meet the real-time requirement of network node interaction. Then, different communication instruction function codes and fixed communication flow are designed to meet the accuracy requirements of the data, and finally, the communication security requirements are met through CRC check, function code check and communication error check. After testing, the method has the characteristics of high real-time performance, high data accuracy and low configuration requirement, and can meet the requirements of real-time data monitoring of nuclear power instrument and control system, and can also be applied to industrial control fields such as ships and thermal power plants.
机译：在核电厂安全数字化仪器和控制系统的运行过程中，有必要实时监控在线运营的数据。工程师站和安全水平之间的通信应确保数据监控的实时，准确性，可靠性和安全要求。如何设计非安全工程师站PC和安全仪器和控制系统之间的维护网络是核安全性DCS研究和设计行业的难题。 Firmsys是第一款数字核安全仪器和控制系统平台在中国成功开发和评估。本文基于Firmsys中数据通信网络的网络特征。提出了一种基于802.3协议的数据实时监控设计。该设计基于标准MAC帧结构，通过添加新的数据段来形成新的数据帧格式，以满足网络节点交互的实时要求。然后，不同的通信指令功能代码和固定通信流程被设计为满足数据的精度要求，最后，通过CRC检查，功能代码检查和通信错误检查满足通信安全要求。测试后，该方法具有高实时性能，高数据精度和低配置要求的特点，并可满足核电仪器和控制系统的实时数据监控要求，也可应用于工业控制船舶和热电厂等领域。

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