您的位置:首页  > 论文页面

MOA泄漏电流测量的若干问题

发表时间:2014-09-30  浏览量:1347  下载量:581
全部作者: 秦松林
作者单位: 上海交通大学电子信息与电气工程学院
摘 要: 在正弦电压激励下,由于金属氧化物避雷器(metal oxide arrester,MOA)泄漏电流中的阻性电流是非正弦稳态(非线性),MOA泄漏电流也是非正弦稳态。因此,将正弦稳态分析工具——相量法用于MOA泄漏电流测量的研究时就必须要注意适用性问题。通过分析LCD-4 MOA泄漏电流测量仪测量阻性电流的基本原理,给出了典型补偿法测量MOA泄漏电流中阻性电流的基本原理:基于MOA泄漏电流中工频正弦分量超前MOA电压90°. 通过三相工频电场的分析,给出了绝大多数变电站中在三相运行电压下MOA泄漏电流中的工频正弦分量并不是正好超前MOA电压90°.
关 键 词: 高电压工程;金属氧化物避雷器泄漏电流;非正弦稳态;阻性电流测量;补偿法
Title: Several problems of MOA leakage current measurement
Author: QIN Songlin
Organization: School of Electronic Information and Electrical Engineering, Shanghai Jiao Tong University
Abstract: Under the sine voltage, the resistive current of metal oxide arrester (MOA) leakage current is a non-sine steady-state, so MOA leakage current is a non-sine steady-state. When the sine steady-state analysis tool, i.e. phasor method is used in the study of MOA leakage current measurement, it is necessary to pay attention to the applicability problem. Through analysis of the basic principle of measuring resistive current of LCD-4 MOA leakage current measuring instrument, this paper gives the basic principle for the typical compensation method of measuring resistive current. That is, based on the power frequency sinusoidal component of MOA leakage current ahead of MOA voltage 90� Through the analysis of three-phase power frequency electric field, the paper finally gives the power frequency sine component of MOA leakage current is not just ahead of MOA voltage 90�under the three-phase operating voltage in the most substations.
Key words: high voltage engineering; metal oxide arrester leakage current; non-sine steady-state; resistive current measurement; compensation method
发表期数: 2014年9月第18期
引用格式: 秦松林. MOA泄漏电流测量的若干问题[J]. 中国科技论文在线精品论文,2014,7(18):1860-1865.
 
0 评论数 0
暂无评论
友情链接