热电厂DCS系统的设计

范文编号:RN056  范文字数:14254,页数:39

范文题目：热电厂DCS系统的设计
摘  要
 DCS的结构是一个分布式系统，其实质是利用计算机技术对生产过程进行集中监视、操作、管理和分散控制的一种新型控制技术。它是由计算机技术、信号处理技术、测量控制技术、通信网络技术和人机接口技术相互渗透发展而产生。目前，分散控制系统已经发展成为工业生产过程自动控制装置的主流。
 本设计为热电厂DCS控制组态设计和实现。主要通过数据采集系统(DAS)采集模拟量和开关量信号，模拟量控制系统(MCS)控制水位、汽温、汽压等参数，顺序控制系统(SCS)控制辅机及其设备的启停和联锁控制，汽轮机保护跳闸系统(ETS)完成汽轮机保护功能，主燃料跳闸系统(MFT)完成锅炉保护功能。达到有效监测和控制热电厂锅炉汽轮发电机组运行的目的。
 范文首先学习和消化了杭州和利时HOLLiAS-MACSV DCS控制系统的基本功能和主要技术；在掌握该系统的基本原理和功能的基础上，范文然后以魏桥热电厂机组为控制对象，应用MACSV DCS系统进行了硬件选型和系统组态；范文最后以汽包水位监控为重点进行MCS控制组态的实现，以给水泵监控为重点进行SCS控制组态的实现，以汽轮机保护跳闸为重点进行ETS组态的实现。最终全面实现了杭州和利时系统在魏桥热电厂机组上的DCS控制功能。
 生产实践将证明热电厂DCS控制组态设计和实现是热电厂可靠、安全运行的重要保证。
 
 
 范文类型：应用研究。

 
 关 键 词：DCS；杭州和利时MACSV系统；热电厂
                                                                            
 
Title:  Thermal power plant DCS system's design
ABSTRACT
 The structure of DCS is a distributed system which essentially is a novel control technology to monitor，operate and manage the production process in a centralized way and at the same time control the production process in a distributed way．DCS is established with the development of computer technology，signal process technology，measurement and control technology，communication network technology and human machine interface technology．Now，the DCS is developed to be the mainstream of automation control device for industrial production process．
 This paper is a design and implementation for thermal power plant DCS．This system achieves the effective monitor and control boiler，stream turbine and generator operation of thermal power plant basically through the following functionalities．It includes acquitting analoy input signal and digital input signal by data acquisition system(DAS)；controlling the parameters，such as water level，stream temperature，stream pressure by modulate control system(MCS)；controlling the start-halt and mutual-lock of auxiliary machines and their devices by sequence control system(SCS)；executing the turbine protective function by turbine tripping system(ETS)；and executing the boiler protective function by main fuel tripping system(MFT)．
 In the paper firstly the basic functions and key technologies of HOLLiAS-MACSV DCS system of Hangzhou Hollysys Inc is studied．The secondly selecting the hardware and system configuration are finished for Weiqiao thermal power plant generator unit based on MACSV DCS system．inally the MCS control configuration for the water level monitoring of steam box，the SCS control configuration for hydro pump monitoring and ETS configuration for trip protection of．steam turbine are implemented by control configuration．By this way，the overall DCS control functions are completed on Weiqiao thermal power plant steam turbine generator by the Hangzhou Hollysys system．
 The practical application verified that the thermal power plant DCS control configuration design and implementation can ensure the reliable and safety operation of thermal power plant．
TYPE OF THESIS: Applied Researc
KEY WORDS: DCS; Hangzhou Hollysys MACSV System; Thermal Power Plant
 
目  录
1 绪论 3
2分散控制系统的发展历史和国内外现状 5
3 和利时MACS系统的硬件体系结构 7
3.1 MACS系统的硬件组成 7
3.2 MACS系统的网络组成 8
3.3 MACS系统的接地组成 10
4和利时MACS系统的软件体系结构 13
4.1 MACS系统的软件组成 13
4.2 工程的生成 13
4.3图形及报表组态 13
5硬件选型和系统组态 15
5.1前期设计 15
5.2硬件选型和I/O点表设计 16
5.3系统组态 18
5.4工程组态 18
5.5汽包水位调节控制组态 20
5.6给水泵顺序控制组态 25
5.7 ETS组态 28
6 结论与展望 31
致    谢 33
参考文献 35
附    录 37

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