【作者】 余国栋；

【导师】 苗世洪；

【作者基本信息】 华中科技大学 ， 电力系统及其自动化， 2007， 硕士

【摘要】 随着现代计算机技术和网络技术的发展,现代工业通信也开始逐步走向网络化。为了满足电力系统自动化的这种需要,IEC T57制定并于2004年颁布了IEC 61850国际规约,该规约规范了变电站综合自动化网络通信方式,使电力系统二次回路开始向网络化方向发展。微机继电保护作为变电站综合自动化的重要组成部分,也逐步开始向智能化、网络化的方向发展。为了满足新的IEC 61850规约对微机继电保护的要求,本文在对国际上变电站综合自动化最新标准IEC 61850分析基础上,提出了应用嵌入式技术和以太网通信技术的新型微机继电保护装置硬件平台的方案和设计。论文首先介绍了IEC 61850的制定、特点以及关于变电站中综合自动化方面的规定,明确了新型微机继电保护装置的设计应符合变电站综合自动化技术发展趋势的意义。接着给出了一种新型微机继电保护装置的硬件平台的设计方案,该方案中采用了技术较为先进的ARM+DSP双CPU结构,两个CPU之间通过双口RAM交换数据,集数据采集、AD转换、开入开出和人机接口等于一体,可以实现电力系统里基本的测控和保护功能。由于目前在电力系统中嵌入式技术应用的比较少,本文就围绕嵌入式系统的软件设计进行展开,提出了一种在微机继电保护装置设计中应用嵌入式技术行之有效的方法,其中包括嵌入式系统的上电引导程序BOOTLOADER的设计、嵌入式Linux操作系统的移植以及在嵌入式Linux操作系统上以太网驱动程序的编写和应用通信软件的实现等。本文所提出的新型微机继电保护装置不同于以往的由单片机构成的微机继电保护装置,而是将嵌入式技术与以太网通信技术相结合,因此在总体方案和设计思想上均具有新意。更多还原

【Abstract】 With the development of modern computer technology and Internet technology, the modern industrial communications has begun to gradually move toward network communication. To meet this need of the power system automation, IEC T57 formulated and published the IEC 61850 in 2004. The standard stipulated the substation automation network communication, so the secondary circuit of power system began to develop in the direction of the network. PC-relay protection as an important component of substation integrated automation gradually began to develop toward intelligent, network direction.To meet the new requirements to PC-relay protection of IEC 61850, the paper gives a novel PC-relay protection’s program and design which applied the technology of embedded system and Ethernet based on the analysis to the international standard IEC 61850 of substation automation. In the paper, firstly it introduced that the formulation and characteristics of the IEC 61850, and the requirements on the substation automation, and explained a novel PC-relay protection should be designed to meet the significance of the development trend of the substation automation technology. Secondly it introduced hardware platform development of the PC-relay protection, it applies ARM+DSP double CPU in the device. The data was exchanged in double-port ram between ARM and DSP. The device has the functions such as collecting data, AD transform, digital input, digital output and Human-Machine interface. It generally does the job like measure, control and relay protect in power system. Thirdly, the paper detailed discusses the software design of ARM9 microprocessors which is my main work. It introduced the design of the BOOTLOADER which is the program when the ARM9 began to run and the transplant of the embedded Linux operating system. At last it is introduced how to program the drivers for the all kinds of hardware and the software for the application on the embedded Linux operating system.The novel PC-relay protection given in this paper is different from early PC-relay protection which formed with single chipper microcontroller. This PC-relay protection applied the technology of embedded system and Ethernet, has innovation both general program and design theory.更多还原