基于c8051f360单片机的电动机微机保护.doc

PAGE 摘要 随着计算机和信息技术的迅速发展,特别是单片机的诞生,人们考虑用单片机实现设备的智能化,利用单片机技术,以传统保护为参考,研制一种多功能电动机保护装置,以替代传统的单一的保护装置,实现对电动机及时、有效的保护与控制。 本次设计介绍了微机保护的发展历史、技术特点和发展方向。文章以电动机保护理论为基础，对电动机常见故障进行了分析，并以检测的电流、电压信号为故障判据，设计了以C8051F360单片机为核心的微机保护装置。C8051F360单片机主要完成数据采集、数据处理和保护、以及人机对话功能。 最后，文章对系统的抗干扰问题进行了分析，提出了一些硬件抗干扰措施。 关键词：电动机，微机保护，故障分析，单片机 Abstract With the rapid development of computer and information technology, especially the birth of single chip microcontroller (SCM), people consider to use it to achieve the intelligent of devices. Using SCM technology and the traditional protection as a reference, the people develop a multi-purpose motor protection device to replace the traditional protective device, and can make the motor protection and control timely and effective. The design introduces the development history, the technical characteristics and development direction of the microprocessor-based protection. The common motor failure was analyzed based on the theory of the motor protection. And the C8051F360-centered microprocessor-based protection device is designed according to current and voltage signal failure criterion. C8051F360’s major task is to do the data collection, data processing and protection, and Furthermore, according to the analysis of disturbances in the whole motors protection system, some hardware measures of antiamming are taken in the system. Key words： motors, Microprocessor-based Protection, Protective algorithm, Microcontroller 目录 TOC \o 1-2 \h \z \u HYPERLINK \l _Toc326400831 1 绪论 PAGEREF _Toc326400831 \h 1 HYPERLINK \l _Toc326400832 1.1微机保护的发展和特点 PAGEREF _Toc326400832 \h 1 HYPERLINK \l _Toc326400833 1.2电动机保护的发展 PAGEREF _Toc326400833 \h 4 HYPERLINK \l _Toc326400834 1.3智能微机保护装置的特点 PAGEREF _Toc326400834 \h 8 HYPERLINK \l _Toc326400835 1.4本课题提出的解决方案和要做的主要工作 PAGEREF _Toc326400835 \h 10 HYPERLINK \l _Toc326400836 2 大型电动机保护方法研究 PAGEREF _Toc326400836 \h 12 HYPERLINK \l _Toc326400837 2.1电动机常见的故障 PAGEREF _Toc326400837 \h 12 HYPERLINK \l _Toc326400838 2.2短路