基于PLC的水电站泄洪闸门现地控制系统的研究

发布时间：2018-06-27 08:21

本文选题：水电站 + 泄洪闸门　；参考：《南昌工程学院》2017年硕士论文

【摘要】：水电站泄洪闸门的安全运行对水电站的大坝安全、防洪保障等具有十分重要的意义。课题从提高泄洪闸门启闭工作的可靠性和泄洪闸门升降速度出发,基于PLC控制技术,开展以下问题的研究。1、通过对国内外水电站泄洪闸门控制的现状分析,提出了中、小型水电站现地控制系统可行性控制方案,并对水电站泄洪闸门启闭过程进行力学分析与建模,为泄洪闸门升降调速控制提供可靠的依据。2、基于对水电站泄洪闸门控制的总体要求分析以及行业规范要求,提出水电站泄洪闸门远程和现地控制系统配置方案,并对水电站泄洪闸门控制系统进行总体设计。3、将PID控制方法运用到泄洪闸门控制系统中,并结合泄洪闸门启闭过程模型,提出了一套科学合理的闸门现地控制策略。4、开展了水电站泄洪闸门现地控制系统硬件和软件的设计。结合水电站泄洪闸门控制系统总体设计方案,选择了合适的闸门开度仪、水位监测仪以及S7-200型号的PLC,搭建了现地控制单元硬件电路,并进行了相关的软件设计。5、开展了水电站泄洪闸门现地控制系统的仿真。运用MATLAB建立了控制系统系统仿真模型,通过仿真结果分析,证明了本文基于PLC的水电站泄洪闸门控制系统的设计是可行的,特别是体现在对闸门升降速度上的研究,比以往的匀速提升闸门不仅在时间上缩短而且在泄洪量上也有比较明显的提高,这对提升水电站泄洪能力具有一定的意义。
[Abstract]:The safe operation of sluice gate of hydropower station is of great significance to dam safety, flood control protection and so on. In order to improve the reliability of the floodgate opening and closing and the lifting speed of the floodgate, based on the PLC control technology, the research on the following problems is carried out. Through the analysis of the current situation of the flood gate control in the hydropower stations at home and abroad, the paper puts forward the middle. The feasibility control scheme of local control system for small hydropower stations is proposed. The mechanical analysis and modeling of the opening and closing process of the floodgates of hydropower stations are carried out. Based on the analysis of the overall requirements of the flood gate control of hydropower stations and the requirements of industry specifications, the configuration scheme of remote and in-situ control system for the floodgate gate of hydropower station is put forward, which provides a reliable basis for the control of the lifting and regulating speed of the floodgate of the hydropower station. The control system of sluice gate of hydropower station is designed as a whole. 3. The pid control method is applied to the control system of sluice gate, and the process model of opening and closing of sluice gate is combined with the pid control method. A set of scientific and reasonable locale control strategy of sluice gate. 4. The hardware and software design of the locale control system for flood sluice gate of hydropower station is presented. Combined with the overall design scheme of flood gate control system of hydropower station, the suitable gate opener, water level monitor and PLC of S7-200 model are selected, and the hardware circuit of local control unit is built. The software design. 5. The simulation of the field control system of the flood gate of hydropower station is carried out. The simulation model of the control system is established by using MATLAB. Through the analysis of the simulation results, it is proved that the design of the control system of the floodgate gate of the hydropower station based on PLC is feasible, especially the research on the speed of the gate lifting and lifting. Compared with the previous constant speed lifting gate, it not only shortens the time but also improves the flood discharge volume obviously, which is of certain significance for improving the flood discharge capacity of hydropower stations.
【学位授予单位】：南昌工程学院
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TV736

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