基于CAN总线的电力远程监测系统研究

【作者】 杨宇祥；

【导师】 滕召胜；

【作者基本信息】 湖南大学 ， 测试计量技术及仪器， 2002， 硕士

【摘要】 远程监测管理是实现电力系统自动化的关键。本文综述了电力远程监测领域技术现状，总结了现有电力远程监测系统的优点与不足，提出并研制了一种通信距离远、数据传输速度快、监测实时性强、组建方便的基于CAN(控制器局域网)总线的电力远程监测系统，重点论述了集中器的工作原理和CAN总线通信方法。 论文共分5章： 第一章绪论。介绍了当前国内外电力远程监测技术的现状，并以一种常见的电力远程监测系统为例，分析了现有电力远程监测系统中普遍存在的弊端。 第二章简要介绍了基于CAN总线的电力远程监测系统主站、集中器、采集单元、采集模块和采集终端等各组成部分，介绍了系统的上层星型MODEM通信信道、中层CAN总线通信信道和底层RS-485总线通信信道，对系统的软件平台、通信协议、系统的远程监测功能及该系统的特点进行了概述性的介绍。 第三章分析了以Intel 16位单片机80C196KC为核心的集中器的设计原理，详细介绍集中器的硬、软件设计，给出了实际电路原理图和软件流程图。 第四章介绍了CAN总线节点电路的设计方法和基于CAN总线的分布式测控网络的组建方法，详细论述了增强模式下CAN总线分布式测控网络实现点名和广播通信的原理与方法，深入探讨了CAN控制器SJA1000位定时参数的计算方法，总结了作者在设计CAN总线通信系统的过程中遇到和解决的几个关键问题。 第五章介绍了基于CAN总线的电力远程监测系统的运行情况，总结了本文工作的不足之处，探讨了电力远程监测技术的三个发展方向。更多还原

【Abstract】 Remote monitoring is the key technique to realize automatic management of electric power system. This paper summarizes the current technologies in the domain of electric power remote monitoring, sums up their advantages and disadvantages, puts forward and develops a novel electric power remote monitoring system based on CAN-BUS, which has the strongpoint of long distance and high speed of communication, better real-time monitoring and easy to connect to network. The working principle of concentrator and the method of CAN-BUS communication are the two emphases of this paper.The paper consists of 5 chapters:The first chapter is the foreword, which introduces the current technologies status of electric power remote monitoring, and analyses their ubiquitous deficiencies by use of an example of a common electric power remote monitoring system.The second chapter presents the system main station, concentrator, acquisition unit, acquisition module and acquisition terminal, which all are the main parts of electric power remote monitoring system based on CAN-BUS. This chapter also introduces the system’s top, middle and bottom communication channel, where the top channel is star-type used MODEM via telephone network, the middle is CAN-BUS, while the bottom RS-485 BUS. The paper refers briefly to the system’s software,communication protocol, remote monitoring function and characteristic.The next chapter analyses the principle of concentrator, which key part is Intel 16 bit microcontroller 80C196KC, demonstrates explicitly the design of concentrator and gives the hardware schematics and software flow chats of the system.The fourth chapter introduces the circuit design method of CAN-BUS node, as well as the technique of structuring distributing-type CAN-BUS measuring and controlling network, explains thoroughly how to realize CAN calling and broadcasting communication under PeliCAN mode, and discusses detailedly the computational technique of bit-timing parameter of CAN controller SJA1000. The latter part of this chapter points out several important problems confronted and solved by the author in the course of designing CAN-BUS communication system.The last chapter presents the operating results of the electric power remote monitoring system based on CAN-BUS, summarizes the deficiencies of the paper, and forecast three prospects of electric power remote monitoring technology.更多还原