CAN网在工业控制中的应用研究

电气自动化论文编号:ZD367  论文字数:33097,页数:67，有开题报告，任务书，文献综述 
 目   录
摘  要  Ⅰ
Abstract Ⅱ
第1章 绪 论 1
1.1 CAN网络的概述 1
1.2 变电站自动化系统的基本介绍 2
 1.2.1变电站自动化 2
 1.2.2变电站综合自动化 3
 1.2.3变电站综合自动化系统的分层分散式结构 3
1.3 变电站间隔层通信系统的介绍 4
 1.3.1变电站间隔层通信系统通信网络的现状 4
 1.3.2变电站间隔层对通信系统的要求及发展趋势 4
 1.4 基于CAN总线技术的保护测控单元 5
 1.4.1现场总线及其特点 5
 1.4.2现场总线的选型 6
 1.4.3基于CAN总线的保护测控单元 8
第2章 保护测控单元的硬软件设计 10
 2.1 保护测控单元的硬件设计 10
 2.2 电源插件 10
 2.3 交流插件 10
 2.4 保护测控CPU插件 11
 2.4.1数据采集系统 12
 2.4.2主CPU系统 16
 2.4.3开关量输入/输出 21
 2.4.4 CPLD 23
 2.4.5时钟电路 24
 2.5 人机接口界面 26
 2.5.1键盘输入部分 26
 2.5.2液晶显示回路 26
 2.5.3字符显示 29
 2.6 保护测控单元的软件设计 29
 2.7 初始化子程序 31
 2.7.1 X5643的初始化 31
 2.7.2 DS12887的初始化 31
 2.7.3 SJA1000的初始化 32
 2.8 主程序 33
2.9 保护中断子程序 35
 2.9.1键盘、开关量处理模块 35
 2.9.2数字搏波幅值计算 35
 2.9.3保护处理模块 36
第3章 CAN通信单元的硬软件设计 41
3.1 CAN通信单元的硬件电路设计 41
3.2 CAN通信单元的软件设计 43
 3.2.1通信电路 43
 3.2.2通讯处理模块 44
第4章 系统的抗干扰技术 52
4.1硬件抗干扰措施 52
4.2 软件抗干扰措施 53
 4.2.1设置软件陷阱 53
 4.2.2设置看门狗定时器 53
 4.2.3软件冗余技术 53
第5章工作总结及展望 54
5.1工作总结 55
5.2工作展望 56
参考文献 57
致  谢 58
附录A 系统总图 59
附录B 保护测控原理图 61

摘要: 通信网络是变电站综合自动化系统的关键，本课题的主要任务是研究CAN总线在变电站综合自动化系统中的应用，包括基于CAN总线的通信系统的构建，通信管理机的设计、制作和调试。
  论文首先分析了CAN总线的特性，对其可靠性、实时性、灵活性进行了实践验证，确定了用CAN总线来构建变电站综合自动化系统数据通信网络的可行性，并在对变电站综合自动化系统的结构及数据通信的内容和要求做了研究和分析的基础上提出了基于CAN总线的变电站综合自动化数据通信网络的构建方案，编制了相应的基于CAN总线的变电站综合自动化系统通信协议，同时针对电力系统的不同要求，对CAN总线通信网络中通信参数的计算进行了研究和验证。通信管理机是变电站通信网络的核心，论文在结合装置具体要求的基础上，提出了硬件以80C320为核心、站内通信电路以SJA1000为核心、远程通信电路以MODEM为核心的实现方案。通信管理机采用模块化的软硬件设计，有较高的可靠性，完全适应变电站综合自动化系统对通信管理的要求。在本文的最后，给出了通信系统的改进意见。

 关键词: 变电站自动化；通信系统；CAN总线；通信规约；通信管理；
 微处理器
 
  According To The Transformer Substation Automation Of The CAN Net The Protection Measures To Control The Correspondence To Equip Of Research To Manufacture
 Abstract : Communication network is a key technique in substation automation system. This dissertation gives a special research in the application of CAN Bus in substation automation system, including the constructing of communication system based on CAN bus、the designing and debugging of communication manager.
  Firstly, the characteristics of CAN bus are analyzed and it’s reliability、expeditiousness and flexibility are tested. A communication network of substation automation system constructed on CAN bus is presented and confirmed. Secondly, the dissertation discusses the main structure of substation automation system, as well as the content and request of substation digital communication. According to this, it gives the project of constructing the substation CAN communication network and the communication protocol. And according to different requests of power system, it makes research and tests of the calculation of the communication parameters in the network. Communication manager is the key to communication network based on CAN bus. On the base of the specific demand of the set, a project is presented in which 80C320 microprocessor is used as Central Processor Unit; SJA1000 is used as the local communication controller and MODEM is used as the remote communication controller. The communication manager with better reliability is designed as modules in software and hardware. The function of the manager can meet the demand of communication management of substation automation system. Finally, some measures are also proposed for the improvement of the communication system.

 KEYWORDS: Substation Automation；Communication System；CAN Bus  Communication Protocol；Communication Management；　    Microprocessor