韶关市广播电视大学开放教育本科
毕业设计(论文)
基于WINCC的泵站控制系统设计
姓 名:王兴龙
专业班级:07秋机械设计制造及其自动化 指导教师:钟红君
提交日期:2009年11月25日
摘要
摘要
韶关市的排水泵站共有多个,分布在市区的武江沿岸。它担负着城市雨、污水排放的重要任务。每逢夏季到来,当污水蓄水池的水位低于长江水位时,污水蓄水池里面的水就必须通过泵站排入长江。如果排水不及时,致使下水道堵塞和桥下积水过多,就会影响交通和环境,给城市居民的生活带来诸多不便。随着韶关市城市建设的迅速发展,通过构建泵站监控网络,实现整个过程无人自动化已迫在眉睫。
排水泵站自动监控系统的开发和应用,将大大提高排水泵站的自动化控制水平,增加泵站运行参数记录的可靠性,减轻值班人员的劳动强度,并可对泵站机电设备运行进行实时监控。
罗家路排水泵站监控系统由泵站控制系统、中心控制系统和通信系统组成。泵站控制系统采用了PLC及相应的模块和通信设备。PLC通过模板实现就地的数据采集和控制,同时将现场采集到的数据传至中控系统,并接受中控指令,实现远程自动控制。
本文重点讨论监控系统组态界面的开发。其开发是利用的西门子产品WinCC(Windows Control Center,窗口控制中心)组态软件,来实现PLC与监控机之间的通信及监控机监控画面的制作。 关键词:组态软件;排水泵站;自动监控系统;WinCC
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基于WINCC的泵站控制系统设计
ABSTRACT
There are seven municipal drainage pumping stations in Wuhan,which are distributed in the edge of the Yangtse River,undertaking the task of municipal rainwater and wastewater. In the summer,which is a rainy season,the water level of the impounding reservoir is higher than the Yangtse River,so we must pump the water with the municipal drainage pumping stations.If it isn’t pumped on time,it will result in delay of dealing with emergencies,serious hydrocele below traffic bridges and a lot of inconvenience of living and traffic.With the rapid development of city construction,the scale of the municipal drainage pumping station is increasing gradually.So the automatization of the whole control process through establishing the supervisory network of the drainage pump station is becoming more and more urgent.The modified project of luojialu drainage pumping station is to substitute the manual control system to automation system.
The research and application of the pumping station automatic monitor system will improve the degree of the control system,increase the reliability of the operation,decrease the intensity of the personal on duty and monitor the equipment status in real-time.
Luojialu drainage pumping station automatic monitor system is composed of pumping station control system,central control system and communication system.The PLC and relative modules collects the sample data and controls the equipments,and transmit the information to the central control system which implements remote control sends the control order to the pumping control system.
The concern of this paper is discuss the development of the supervisory interface with simatic WinCC,which implenments the communication between the PLC and the supervisory computer and the supervisory interface.
KeyWords: Configuration software;Drained pumping station;Automatic monitor system;WinCC
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目录
目 录
摘要 ................................................................................................... I ABSTRACT ....................................................................................... II 第一章 绪论 ....................................................................................... 1
1.1 泵站简介................................................................................ 1
1.1.1 泵站在城市排水中的作用............................................... 1 1.1.2 罗家路排水泵站简介 ..................................................... 1 1.1.3 罗家路排水泵站的特点 .................................................. 2 1.2 研究泵站监控系统的意义 ....................................................... 3 1.3 泵站监控系统的研究现状及发展趋势 ...................................... 3
1.3.1 早期的监控系统 ............................................................ 4 1.3.2 集散控制系统 ................................................................ 4 1.3.3 基于现场总线技术的PLC网络 ....................................... 5 1.4 本文研究内容和重点 .............................................................. 6 第二章 泵站控制系统概述 .................................................................. 7
2.1 控制工艺和功能 ..................................................................... 7
2.1.1 泵站主控工艺 ................................................................ 7 2.1.2 泵站监控系统的功能要求............................................... 7 2.2 监控系统的总体设计 .............................................................. 8
2.2.1 监控系统的设计特点 ..................................................... 8 2.2.2 泵站监控系统的总体方案............................................. 10
第三章 泵站控制系统PLC程序设计 ............................................... 12
3.1 泵站电机和风机程序设计 ..................................................... 12 3.2 PLC程序 .............................................................................. 13 3.3 冷却水电机启动 ................................................................... 15 第四章 监控系统WinCC项目的设计 ................................................. 17
4.1 WinCC组态软件简要介绍 ...................................................... 17
4.1.1 WinCC的系统构成 ....................................................... 17 4.1.2 WinCC的性能特点 ....................................................... 19 4.2 WinCC项目的建立 ................................................................ 20
4.2.1 变量管理 ..................................................................... 20 4.2.2 图形的编辑 ................................................................. 22
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