【作者】 张翼；

【导师】 韩兵； 包一鸣；

【作者基本信息】 上海交通大学 ， 控制工程， 2009， 硕士

【摘要】 现场总线技术是电子、仪器仪表、计算机技术和网络技术的发展成果,现场总线技术和现场总线控制系统已成为世界自动化技术的热点。现场总线技术已在国内外化工、石油、冶金等领域取得成功的应用,但在国内大型电站单元机组中的全面应用目前仍然是空白。在国外,现场总线系统在发电厂中的推广应用速度也比其它行业要慢,全面应用的业绩也仍属少数。随着发电厂生产过程控制全面数字化的呼声日益增高,现场总线技术及现场总线控制系统在电力行业中的推广应用已经向我们提出了新的挑战。论文研究了现场总线技术的发展背景和趋势,论述了其特点和优点及目前现场总线技术在国内外发电厂中的应用状况,并分析了基金会现场总线、PROFIBUS、HART、ASI等几种有影响且适用于发电厂的现场总线标准。通过收集现场总线控制系统以及现场总线型电动执行机构、电气控制设备、变送器等现场总线产品的发展情况,并针对数字化发电厂控制的特点及需求,对数字化发电厂采用现场总线技术的总线选取、应用层面、方案配置、设计原则、注意事项等逐一进行了技术经济分析。根据对现场总线的技术、经济研究,论文给出了推荐的发电厂应用设计总体方案,并以1000MW燃煤发电厂机组控制采用SIEMENS公司的SPPA-T3000系统平台和PROFIBUS总线标准为例,进行实际的应用设计。通过技术经济的分析以及实际的应用设计可以得出,应用现场总线技术将带来全厂管控数字化和全生命周期的设计、安装、调试、运行维护成本节省等有利因素,由此引起的投资增加是应该可以接受的,在充分关注系统可靠性、实时性和故障影响性等问题后,推荐在数字化发电厂中积极采用现场总线技术。论文共分为七章:第一章为绪论,介绍了课题研究的背景和现状;第二章对现场总线技术的发展及现状进行概括的介绍;第三章对现场总线产品的基本情况进行了举例介绍;第四章分析了数字化发电厂过程控制的需求,对采用现场总线进行了技术分析,并对工程造价进行了比较;第五章以1000MW燃煤发电机组为例,进行了实际的应用设计;第六章则从推广应用的角度出发,提出应用中可能出现的问题,以及对应的预防措施;第七章为全文的总结,及对现场总线技术在发电厂应用的展望。更多还原

【Abstract】 The fieldbus and Fieldbus Control System became the focus of automatic technology in the world, following the development of electronic, instrumentation, computer and network technology. The fieldbus had already been applied to the areas of chemical, petroleum and metallurgy successfully. But there is vacancy of full application in domestic large-capacity power plant unit control. Overseas, the speed of Fieldbus Control System application in power plants is also slower than other areas, and full application is also minority. With the voice of power plant process fully digitized control increasing, application of fieldbus and Fieldbus Control System in the power plants has been made to our new challenges.The paper investigates the development background and trend of fieldbus, and discusses its characters and advantage. It also introduces the application states of fieldbus technology in power plants and analyzes several well-known fieldbus standards, which are adapted to power plants,such as Foundation Fieldbus, Profibus, Hart and ASI. Based on the development of Fieldbus Control Systems, motor driven actuators, electrical control devices and transmitters, which are designed with fieldbus interfaces, and the characters and requirements of power plant control, it analyzes the standard selection, application area, system configuration, design principle and potential application problems when using fieldbus in power plant control.According to the research of fieldbus technology, it gives the recommended scheme for power plant application. It also gives the design in unit control of 1000 MW fossil power plant, with PROFIBUS and SIEMENS SPPA-T3000 platform.With the technology and cost analysis and the fieldbus application design, it indicates that applications of fieldbus technology will lead to the digital integration of control and management in the whole plant, increase running life, reduce costs of design, installation, adjustment and maintenance, and increase of investment resulting from the fieldbus application is acceptable. So, the application of fieldbus technology should step up in power plant control.This paper comprises seven chapters. Chapter I is exordium, in which the significance and status quo of the thesis are introduced. A general introduction of development and status que of fieldbus technology are in Chapter II. In Chapter III, some examples of devices designed with fieldbus interfaces are carried out. In Chapter IV, the requirements of process control in digital power plants are analyzed. The technology and cost analysis for fieldbus application are given. In Chapter V, a practical application of 1000MW fossil power plant is designed as an example. In Chapter VI, the potential application problems when using fieldbus are given as well as the corresponding preventive measures from the point of application. The main work of the paper is summarized and the application of fieldbus technology in power plant is prospected in the Chapter VII.更多还原