总线技术在烟气脱硫电气控制系统中的应用

发布时间：2018-10-22 08:38

【摘要】：随着人民生活水平的不断提高,依靠煤炭发电的火电厂每年的发电量也逐年递增,其排放的二氧化硫却造成了严重的环境污染。开发出自主知识产权的烟气脱硫技术具有重大意义。其中总线技术在烟气脱硫电气控制系统现场中的应用是关键技术之一。本课题以实际的2*600MW烟气脱硫工程为基础,对构成烟气脱硫电气控制系统的硬件和软件以及控制功能进行了深入的研究。在电气控制系统的硬件研制方面,应用现场总线技术,将分布在烟气脱硫综合电气控制系统中的各自独立运行的6KV中压系统及400V低压系统开关柜内的种类和数量众多的继电保护装置、测控装置、自动装置等通过现场总线和工业以太网联结起来构成电气监控系统FECS,这不仅替代了传统的将这些电气监视和控制信号通过硬件接线的方式接入脱硫仪控DCS系统中的方式,大大减少了DCS的测点投资和硬接线方式下的电缆投资；而且,通过建设相对独立的电气监控系统FECS,也更加便于实现专业化的管理和维护。在软件研制方面,通过网络和后台软件,开发了界面友好的监控画面,实现了电气系统的协调控制、故障分析和运行管理,提高了整个发电厂的自动控制水平和运行管理水平。
[Abstract]:With the continuous improvement of people's living standards, the power generation of coal-fired power plants is increasing year by year, but the sulfur dioxide emissions have caused serious environmental pollution. It is of great significance to develop flue gas desulfurization technology with independent intellectual property rights. The application of bus technology in the field of FGD electrical control system is one of the key technologies. Based on the actual 2*600MW flue gas desulfurization project, the hardware, software and control function of the electric control system for flue gas desulfurization (FGD) are studied in this paper. The field bus technology is used in the hardware development of electrical control system. The 6KV medium-voltage system and 400V low-voltage system switchgear, which are distributed in the integrated electric control system of flue gas desulphurization (FGD), are divided into a variety and a large number of relaying protection devices and measuring and controlling devices. Automatic devices and other devices are connected by fieldbus and industrial Ethernet to form an electrical monitoring system (FECS,), which not only replaces the traditional way of connecting these electrical monitoring and control signals to the desulfurizer control DCS system through hardware connection, The investment of measuring point and cable under hard connection mode of DCS is greatly reduced, and it is more convenient to realize professional management and maintenance by building a relatively independent electrical monitoring system FECS,. In the aspect of software development, through the network and background software, a friendly interface monitoring screen is developed, which realizes the coordination and control of electrical system, fault analysis and operation management, and improves the level of automatic control and operation management of the whole power plant.
【学位授予单位】：华东理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：X701.3;TP273

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