水电厂闸门分布式控制系统的研究

发布时间：2018-03-06 13:11

本文选题：水电厂　切入点：分布式控制　出处：《武汉理工大学》2014年硕士论文　论文类型：学位论文

【摘要】：闸门在水电厂正常运行中起着非常重要的作用，不仅承担着发电、防洪等任务，特别是汛期过程中，闸门系统的有效运行是整个电厂防洪安全的保证，，同时也影响着整个电厂的发电效益。在保证整个防洪安全的前提下，如何合理的对水电厂水利枢纽工程进行控制，满足电力需求，及时的获取和利用水情信息，实现对水电厂水情的实时调度，使水电厂水利枢纽发挥最大的作用，是当前所有水电厂闸门控制系统亟待解决的重要课题之一。水资源作为人类生存不可或缺的条件之一具有丰富的利用价值。数据表明，水电行业具有丰厚的利润和发展空间。基于水资源具有清洁可再生的优点，其在电力结构调整中占有重要地位。因此，科学管理水资源及进行水资源的优化调度成为当前关注的热点。在这种背景下，闸门分布式控制系统便应运而生，在合理输送、节制和分配水资源，实现闸门系统自动化的过程中起到重要的作用。本论文以清江隔河岩水电厂的实际概况和功能需求进行调研和分析，运用分布式控制系统的设计原理开发了一套集控制、维护、管理于一体的闸门分布式控制系统。该系统不仅能对大坝整个闸门系统进行集中式管理，分布式控制，还具备自诊断、培训等功能，提高了系统的自动化程度。论文结合当前先进的通信和网络技术，贴合清江隔河岩水电厂的需求，对系统的整体结构进行规划。在硬件设计方面，本文囊括了设备选型、电气控制原理图设计、通信网络设计、传感器的选择等方面的内容，对整个流程进行了详细设计；在软件设计方面，本文对包括主程序在内的通信、触摸屏、故障报警、闸门开度与液压油缸位移量相关的程序都进行了设计，并使用WINCC组态软件完善上位机页面；在闸门同步控制方面，本文针对闸门开度与液压油缸之间的关系提出一种新算法，通过项目实践证明了新算法能减少闸门开度测量误差，保证闸门工作的可靠性。
[Abstract]:The gate plays a very important role in the normal operation of hydropower plants. It not only undertakes the tasks of power generation and flood control, especially in the flood season, the effective operation of the gate system is the guarantee of the flood control safety of the whole power plant. At the same time, it also affects the power generation efficiency of the whole power plant. Under the premise of ensuring the whole flood control safety, how to reasonably control the hydro-power project, meet the power demand, obtain and utilize the hydrologic information in time, realize the real-time operation of the hydro-power plant, It is one of the most important problems to be solved urgently in the gate control system of all hydropower plants. As one of the indispensable conditions for human survival, water resources have rich utilization value. Hydropower industry has a rich profit and development space. Because water resources have the advantages of clean and renewable, it plays an important role in the adjustment of electric power structure. Therefore, scientific management of water resources and optimal regulation of water resources have become the focus of attention. In this context, the gate distributed control system emerges as the times require, and in the rational transportation, control and distribution of water resources, The process of automatic gate system plays an important role. Based on the investigation and analysis of the actual situation and functional requirements of Geheyan Hydropower Plant in Qingjiang River, this paper develops a set of centralized control and maintenance based on the design principle of distributed control system. This system can not only manage and control the whole gate system in a centralized way, but also has the functions of self-diagnosis, training and so on, which improves the automation of the system. Combined with the current advanced communication and network technology, the paper plans the overall structure of the system according to the needs of Qingjiang Geheyan Hydropower Plant. In terms of hardware design, this paper includes the selection of equipment, the design of electrical control schematic diagram, Communication network design, sensor selection and other aspects of the content, the entire process has been designed in detail; in software design, this paper includes the main program, including the communication, touch screen, fault alarm, The programs related to hydraulic cylinder displacement and gate opening are designed, and WINCC configuration software is used to perfect the upper computer page. In the aspect of gate synchronous control, this paper proposes a new algorithm for the relationship between gate opening and hydraulic oil cylinder. It is proved by project practice that the new algorithm can reduce the error of gate opening measurement and ensure the reliability of gate operation.
【学位授予单位】：武汉理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP273;TV663

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