现场总线技术在数字化电厂控制系统设计中的应用研究

发布时间：2018-04-12 19:10

本文选题：现场总线 + 数字化电厂　；参考：《华北电力大学(北京)》2017年硕士论文

【摘要】：近年来随着国民经济的快速增长,电力的需求量不断增加,火电厂控制系统实现全面数字化的要求也日益增高,目前电厂的现场控制设备绝大部分尚未实现数字化,传统的DCS(Distributed Control System)由于其单向性特点,不能满足数字化电厂的要求,而现场总线技术的推广应用能够很好地解决这一问题。本文首先论述了现场总线技术的特点、系统结构和国内外的应用情况及发展现状,通过对比分析几种常见的现场总线标准的技术特点、通信方式及应用场合等;其次,分析电厂传统的控制系统的作用、数字化电厂控制系统的要求,并对其在现场设备层采用现场总线系统的配置方案、设计原则、注意事项等逐一进行了分析;再次,以江苏沙洲电厂二期2×1000MW机组扩建工程为例,选择PROFIBUS-DP和FF总线(Foundation Fieldbus)以及HART总线(Highway Addressable Remote Transducer),设计其单元机组和辅助生产控制系统的两个方面的现场总线方案,并在工程造价方面,与DCS进行了投资对比分析,结果表明,采用现场总线技术后,不仅在设备的初次投资方面节省了资金,而且在设备安装、调试、运行维护方面也节约了时间和资金,同时,现场总线技术的应用还有利于电厂的全面实现设备监控和管理的数字化;之后,应用现场总线控制系统诊断软件从报警事件、在线诊断和历史记录三个方面进行设备管理与诊断,并同常规的DCS控制系统进行对比。最后,围绕电厂信息系统展开,实现电厂全过程的信息数字化、网络化、集成化,为企业及时提供准确有效的信息服务。
[Abstract]:In recent years, with the rapid growth of national economy, the demand for electric power is increasing, and the requirement of full digitization of thermal power plant control system is increasing day by day. At present, most of the field control equipment in power plant has not been digitized.Traditional DCS(Distributed Control system can not meet the requirement of digital power plant because of its unidirectional characteristics, but the popularization and application of fieldbus technology can solve this problem well.This paper first discusses the characteristics of fieldbus technology, system structure, application situation and development status at home and abroad, through comparative analysis of several common fieldbus standards technical characteristics, communication methods and applications, etc.This paper analyzes the function of traditional control system in power plant, the requirements of digital power plant control system, and analyzes the configuration scheme, design principle and matters needing attention of the field bus system in the field equipment layer one by one.Taking the 2 脳 1000MW unit expansion project of Jiangsu Shazhou Power Plant as an example, the field bus schemes of PROFIBUS-DP and FF bus Foundation Fieldbus and HART bus Highway Addressable Remote Transducer are selected to design the two aspects of unit unit and auxiliary production control system, and the project cost.Compared with DCS, the results show that the field bus technology not only saves money in the initial investment of equipment, but also saves time and money in installation, debugging, operation and maintenance of equipment.The application of fieldbus technology is also conducive to the overall realization of the digitization of equipment monitoring and management in power plants. After that, the diagnosis software of fieldbus control system is used from alarm events.Equipment management and diagnosis are carried out in three aspects: online diagnosis and history record, and compared with conventional DCS control system.Finally, focusing on the power plant information system to realize the whole process of power plant information digitization, networking, integration, for enterprises to provide timely accurate and effective information services.
【学位授予单位】：华北电力大学(北京)
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TM621.6

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