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结合某火电厂生产实时系统的改造工程项目 ,以该厂实时系统中的某机组部分和全厂远动SCADA部分为例 ,介绍了实时系统的核心部分——数据通道的设计与实现。以实时信息系统数据通道中的数据采集、传送、处理与存储、用户与数据库的交互等为主要研究对象。在管理信息系统(MIS)与生产自动化系统的网络数据通信方面采用基于 TCP/IP的 Socket网络通信方式 ;在 MIS网上的信息发布与接收架构方面采用 Web浏览器 /Web服务器 /数据库 (DB)服务器 3层结构 (即B/S结构 ) ,并采用新颖的 Active X组件应用与 ASP应用相结合的 Web应用方式加以实现。实践表明 ,该实时系统具有良好的适应性、兼容性、灵活性、可靠性和安全性 ,该实现方案是成功的和值得推荐的。
Combined with a real-time system reconstruction project of a thermal power plant, taking a certain part of the plant’s real-time system and the SCADA part of the whole plant as an example, the design and implementation of the data channel, the core part of the real-time system, are introduced. The main research object is the data acquisition, transmission, processing and storage in real-time information system data channel and the interaction between user and database. In the management information system (MIS) and production automation system network data communication based on the TCP / IP Socket network communication; in the MIS network information dissemination and reception architecture using Web browser / Web server / database (DB) server 3-tier structure (ie, B / S structure), and the use of new Active X component applications and ASP applications to achieve a combination of Web applications. Practice shows that the real-time system has good adaptability, compatibility, flexibility, reliability and security. The implementation is successful and is recommended.