PLC在電網備用自動投入中的應用

電氣自動化論文編號:ZD006       字數:21572,頁數:50 

目    錄
摘要 ......................................................................i
目    錄 ...................................................................ii
第1章  前言 ................................................................1
1.1 PLC 簡介 ...............................................................1
1.1.1可編程控制器簡介 ......................................................2
1.1.2 PLC的發展歷程 ........................................................2
1.1.3可編程控制器的優點.................................................... 4
1.2基于微處理器的工業控制系統 ..............................................5
1.3集散控制系統 ............................................................5
第2章  可編程控制器控制系統 ................................................7
2.1繼電器控制.............................................................. 7
2.2 工控計算機控制系統................................................ .....8
2.3 冗余系統與熱備用系統................................................... 9
2.3.1冗余控制系統.......................................................... 9
2.3.2熱備用系統 ............................................................9
2.4 PLC的接地.............................................................. 10
第3章 PLC自動控制系統可靠性研究......................... ...................11
3.1 PLC控制系統可靠性簡介 ..................................................11
3.1.1控制系統可靠性降低的主要原因........................ ..................11
3.1.2設計完善的故障報警系統 ................................................12
3.1.3輸入信號可靠性研究 ....................................................13
3.1.4執行機構可靠性研究 ....................................................14
3.2 PLC控制系統抗干擾分析 ..................................................14
3.2.1電磁干擾源及對系統的干擾............................... ...............15
3.2.2 PLC控制系統工程應用的抗干擾設計 ......................................17
3.2.3主要抗干擾措施........................................................ 18
第4章備用電源自動投入的工作原理 ...........................................21
4.1用單片機組成的備用電源自投裝置 ..........................................21
4.2備用電源自動投入的工作過程 ..............................................22
第5章備用電源自動投入電路的設計 ...........................................25
5.1主電路接線備用電源自動投入主電路接線 ....................................25
5.2備用電源自動投入的基本要求和動作程序.................................... 25
5.2.1對備用電源自動投入的基本要求....................... ...................25
5.2.2備用電源自動投入的動作程序............................................ 26
5.2.3斷路器的控制 ..........................................................27
5.3備用電源自動投入時斷路器的動作程序.............. ........................27
第6章  PLC系統配置及程序設計................................................29
6.1 PLC系統配置.............................................................29
6.1.1 PLC系統硬件配置.......................................................29
6.1.2 PLC 輸入輸出接線.............................................. .......29
6.2程序設計 ................................................................30
6.3基于PLC的備用電源自動投入裝置............................................31
6.4 BZT裝置投控規則.................................................. ......31
7.1微型、小型PLC功能明顯增強 ...............................................32
7.2集成化發展趨勢增強 ......................................................32
7.3向開放性轉變 ............................................................33
7.4 我國PLC生產的發展.......................................................34
第8章 結  論................................................................37
致   謝 ....................................................................38
參考文獻 ...................................................................39
附    錄................................................................... 40

摘   要
     近年來隨著計算機在社會領域的滲透, PLC的應用正在不斷地走向深入，同時帶動傳統控制檢測日新月益更新。在實時檢測和自動控制的PLC應用系統中，PLC往往是作為一個核心部件來使用，僅PLC方面知識是不夠的，還應根據具體硬件結構，以及針對具體應用對象特點的軟件結合，以作完善。本文介紹了以S7-200PLC為核心，對某供電局110KV電網“一線兩站”的備用電源自動投入裝置（簡稱備自投）進行了控制的應用，簡述了S7-200PLC的性能特點，詳細闡述了備用電源自動投入裝置的實現
 講述備用電源自動投入裝置的軟件和硬件設計。首先介紹了此系統的開發意義及使用的開發環境，MPLAB IDE系統和開發使用的PIC單片機芯片以及仿真器PICMATE2002。在硬件設計中論述了硬件總體設計過程，確定了技術指標及器件的選擇，著重描述了系統硬件電路設計、硬件設計框圖及所使用的各種芯片功能與特性,在軟件設計中重點剖析了軟件設計的過程，調試部分主要介紹使用調試軟件picamate2002和調試過程中出現的問題，以及最后解決問題的一些方法。
 
關鍵詞：PLC  一線兩站  備用電源自動投入
Abstract
 In recent years along with the computer in the social domain's seepage, the PLC application was moving toward unceasingly thoroughly, simultaneously led the traditional control examination date crecent moon profit renewal. In the real-time examination and in automatic control's PLC application system, PLC often is takes a core part to use, only the PLC aspect knowledge is insufficient, but should also act according to the concrete hardware architecture, as well as in view of the concrete application object characteristic's software union, makes the consummation. This article introduced take S7-200PLC as the core, to some power supply bureau 110KV electrical network “two stations” the emergency power supply automatic investment installment (i.e. prepared turns oneself in) has carried on the control application, has summarized the S7-200PLC performance characteristic, elaborated emergency power supply automatic investment installment realization in detail Narrates the emergency power supply automatic investment installment software and the hardware design. First introduced this system's development significance and the use development environment, MPLAB the IDE system and the development use PIC monolithic integrated circuit chip as well as simulator PICMATE2002. Elaborated the hardware system design process in the hardware design, had determined the technical specification and component's choice, described each kind of chip function which and the characteristic emphatically the system hardware circuit design, the hardware design diagram and uses, analyzed the software design process with emphasis in the software design, the question which debugging part main introduction use debugging software picamate2002 and in the debugging process appears, as well as final solution question some methods.
key word: PLC two stand the emergency power supply to invest automatically