高精确度交流电流测试仪的设计

朱武; 瞿长春; 操瑞发; 赵莎

###

DOI:

上海电力大学学报:2008,24(2):107-110

查看/发表评论过刊浏览高级检索 HTML

←前一篇 | 后一篇→

码上扫一扫！

下载全文

高精确度交流电流测试仪的设计

朱武¹, 瞿长春², 操瑞发¹, 赵莎³

(1.上海电力学院计算机与信息工程学院, 上海 200090;2.上海市电力公司教培中心, 上海 200438;3.中国电力科学研究院, 北京 100085)

Design of Alternating Current Testing Instrument with High Accuracy

ZHU Wu¹, QU Chang-chun², CAO Rui-fa¹, ZHAO Sha³

(1.School of Computer and Information Engineering, Shanghai University of Electric Power, Shanghai 200090, China;2.Education and Training Center of Shanghai Electric Power Company, Shanghai 200438, China;3.China Electric Power Research Institute, Beijing 100085, China)

摘要

图/表

参考文献

本刊相似文献

All Journals 相似文献

All Journals 引证文献

本文已被：浏览 955次下载 506次
投稿时间：2008-03-18

中文摘要: 介绍了一种宽量程范围的交流电流测试仪的工作原理及设计方法.该仪器采用双级电流互感器作为电流分流器,采用对数-反对数放大器实现交流电流真有效值转换,采用超线性度模/数转换器实现数字采样.实验结果表明,在45~65 Hz频率范围内实现了线性度达到0.02%交直流有效值的测量.

中文关键词: 真有效值双级电流互感器模数转换

Abstract:The principle and design method of alternating current testing instrument with wide rang is introduced. In this instrument, two-stage current transformers are used as current shunt, logantilog amplifiers are used to perform true rms-to-dc conversion, and rms voltage is sampled by ultra-linear analog to digital converter. There is not any adjustable element in the circuit because of advanced auto-calibration introduced. Experimental results show that the linearity of rms-to-dc conversion is up to 0.02% in the range from 45 Hz to 65 Hz.

keywords: true root-mean-square two-stage current transformers ADC

文章编号：20080203 中图分类号： 文献标志码：

基金项目:上海市科学技术委员会地方高校能力建设项目(071605125)

作者	单位
朱武	上海电力学院计算机与信息工程学院, 上海 200090
瞿长春	上海市电力公司教培中心, 上海 200438
操瑞发	上海电力学院计算机与信息工程学院, 上海 200090
赵莎	中国电力科学研究院, 北京 100085

Author Name	Affiliation
ZHU Wu	School of Computer and Information Engineering, Shanghai University of Electric Power, Shanghai 200090, China
QU Chang-chun	Education and Training Center of Shanghai Electric Power Company, Shanghai 200438, China
CAO Rui-fa	School of Computer and Information Engineering, Shanghai University of Electric Power, Shanghai 200090, China
ZHAO Sha	China Electric Power Research Institute, Beijing 100085, China

引用文本：
朱武,瞿长春,操瑞发,等.高精确度交流电流测试仪的设计[J].上海电力大学学报,2008,24(2):107-110.
ZHU Wu,QU Chang-chun,CAO Rui-fa,et al.Design of Alternating Current Testing Instrument with High Accuracy[J].Journal of Shanghai University of Electric Power,2008,24(2):107-110.