【作者】 姜黎黎；

【导师】 陈后金；

【作者基本信息】 北京交通大学 ， 电路与系统， 2007， 硕士

【摘要】 金属氧化物避雷器是电力系统中常用的一种过电压保护系统，它具有非常好的非线性，在电力系统中得到了广泛的应用。金属氧化物避雷器测试系统用于在线监测金属氧化物避雷器。本系统可以在不停电的情况下监测金属氧化物避雷器，及时发现异常现象和事故隐患并采取预防措施，防止事故扩大造成经济损失。本文主要致力于金属氧化物避雷器测试系统的硬、软件设计。本系统在结构上分为采集处理单元和人机交互单元两部分，采集处理单元以DSP(TMS320C32)为核心，完成对金属氧化物避雷器全电流和电压信号的采集和处理，算法中用了外、自补偿法对金属氧化物避雷器进行在线测试。人机交互单元以ARM芯片(LPC2214)为核心，运行μC/OS-Ⅱ嵌入式操作系统，完成显示和用户操作等功能。本系统可以实时监控金属氧化物避雷器的工作状态，具有测量速度快，测量精度高的特点，这种设计可以弥补现有单内核(即基于DSP或微控制器)的嵌入式监控系统的不足，在实际工作中得到了广泛的应用。本论文共用图20幅，表4个，参考文献13篇。更多还原

【Abstract】 Metal Oxide Arrester(MOA) is an instrument of over voltage protection which has been developed and extensively used in the electric power system, it has a very good non-linear characteristic. By applying the MOA on-line monitoring technology, we can know the operation of MOA without unnecessary power-off overhaul at any time. Thus we can detect the abnormal phenomena and hide the accident of MOA in time. We can take measures to prevent the accident getting worse and to avoid the economic loss resulted from the accident in advance.This thesis aims at MOA Monitor’s hardware and software design. This system is consists of two parts: acquisition and processing unit, user interface unit. DSP(TMS320C32) is the core of acquisition and processing unit, it performed the acquisition and processing the all-current and voltage signals. We use outer-self compensate algorithm to do on-line test. ARM(LPC2214) is the core of user interface unit, runningμC/OS-II embedded operating system. It performs display and user functions.This MOA Monitor can do on-line test with high speed and precision. It has a good effect in practical application. Such a design can fill the deficiencies of single-core embedded control system.更多还原