PLC在电网备用自动投入中的应用

电气自动化论文编号:ZD006       字数:21572,页数:50 

目    录
摘要 ......................................................................i
目    录 ...................................................................ii
第1章  前言 ................................................................1
1.1 PLC 简介 ...............................................................1
1.1.1可编程控制器简介 ......................................................2
1.1.2 PLC的发展历程 ........................................................2
1.1.3可编程控制器的优点.................................................... 4
1.2基于微处理器的工业控制系统 ..............................................5
1.3集散控制系统 ............................................................5
第2章  可编程控制器控制系统 ................................................7
2.1继电器控制.............................................................. 7
2.2 工控计算机控制系统................................................ .....8
2.3 冗余系统与热备用系统................................................... 9
2.3.1冗余控制系统.......................................................... 9
2.3.2热备用系统 ............................................................9
2.4 PLC的接地.............................................................. 10
第3章 PLC自动控制系统可靠性研究......................... ...................11
3.1 PLC控制系统可靠性简介 ..................................................11
3.1.1控制系统可靠性降低的主要原因........................ ..................11
3.1.2设计完善的故障报警系统 ................................................12
3.1.3输入信号可靠性研究 ....................................................13
3.1.4执行机构可靠性研究 ....................................................14
3.2 PLC控制系统抗干扰分析 ..................................................14
3.2.1电磁干扰源及对系统的干扰............................... ...............15
3.2.2 PLC控制系统工程应用的抗干扰设计 ......................................17
3.2.3主要抗干扰措施........................................................ 18
第4章备用电源自动投入的工作原理 ...........................................21
4.1用单片机组成的备用电源自投装置 ..........................................21
4.2备用电源自动投入的工作过程 ..............................................22
第5章备用电源自动投入电路的设计 ...........................................25
5.1主电路接线备用电源自动投入主电路接线 ....................................25
5.2备用电源自动投入的基本要求和动作程序.................................... 25
5.2.1对备用电源自动投入的基本要求....................... ...................25
5.2.2备用电源自动投入的动作程序............................................ 26
5.2.3断路器的控制 ..........................................................27
5.3备用电源自动投入时断路器的动作程序.............. ........................27
第6章  PLC系统配置及程序设计................................................29
6.1 PLC系统配置.............................................................29
6.1.1 PLC系统硬件配置.......................................................29
6.1.2 PLC 输入输出接线.............................................. .......29
6.2程序设计 ................................................................30
6.3基于PLC的备用电源自动投入装置............................................31
6.4 BZT装置投控规则.................................................. ......31
7.1微型、小型PLC功能明显增强 ...............................................32
7.2集成化发展趋势增强 ......................................................32
7.3向开放性转变 ............................................................33
7.4 我国PLC生产的发展.......................................................34
第8章 结  论................................................................37
致   谢 ....................................................................38
参考文献 ...................................................................39
附    录................................................................... 40

摘   要
     近年来随着计算机在社会领域的渗透, PLC的应用正在不断地走向深入，同时带动传统控制检测日新月益更新。在实时检测和自动控制的PLC应用系统中，PLC往往是作为一个核心部件来使用，仅PLC方面知识是不够的，还应根据具体硬件结构，以及针对具体应用对象特点的软件结合，以作完善。本文介绍了以S7-200PLC为核心，对某供电局110KV电网“一线两站”的备用电源自动投入装置（简称备自投）进行了控制的应用，简述了S7-200PLC的性能特点，详细阐述了备用电源自动投入装置的实现
 讲述备用电源自动投入装置的软件和硬件设计。首先介绍了此系统的开发意义及使用的开发环境，MPLAB IDE系统和开发使用的PIC单片机芯片以及仿真器PICMATE2002。在硬件设计中论述了硬件总体设计过程，确定了技术指标及器件的选择，着重描述了系统硬件电路设计、硬件设计框图及所使用的各种芯片功能与特性,在软件设计中重点剖析了软件设计的过程，调试部分主要介绍使用调试软件picamate2002和调试过程中出现的问题，以及最后解决问题的一些方法。
 
关键词：PLC  一线两站  备用电源自动投入
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