Design of measurement circuit for weak DC signal

Yong Zhao; Liang Guo; Yong Hong Cheng

Design of measurement circuit for weak DC signal

Yong Zhao
, Liang Guo
, Yong Hong Cheng

电气工程学院

Thermal Power Research Institute
Xi'an Jiaotong University

科研成果: 期刊稿件 › 文章 › 同行评审

1 引用（Scopus）

摘要

The measurement of weak DC signal is the key technique for on-line DC monitoring system with XLPE power cables to improve its measurement accuracy. Designs of the key units in measuring circuit for weak DC signal and a design of digital filter were developed. The measuring circuit was examined, and the results of examination show that the measuring circuit can detect 1 nA DC current, and the average error is less than 2%, which agrees the requirement of on-line DC monitoring system with XLPE power cables for DC signal measurement.

源语言	英语
页（从-至）	356-358
页数	3
期刊	Gaoya Dianqi/High Voltage Apparatus
卷	44
期	4
出版状态	已出版 - 2008

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引用此

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title = "Design of measurement circuit for weak DC signal",

abstract = "The measurement of weak DC signal is the key technique for on-line DC monitoring system with XLPE power cables to improve its measurement accuracy. Designs of the key units in measuring circuit for weak DC signal and a design of digital filter were developed. The measuring circuit was examined, and the results of examination show that the measuring circuit can detect 1 nA DC current, and the average error is less than 2\%, which agrees the requirement of on-line DC monitoring system with XLPE power cables for DC signal measurement.",

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author = "Yong Zhao and Liang Guo and Cheng, \{Yong Hong\}",

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AU - Zhao, Yong

AU - Guo, Liang

AU - Cheng, Yong Hong

PY - 2008

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N2 - The measurement of weak DC signal is the key technique for on-line DC monitoring system with XLPE power cables to improve its measurement accuracy. Designs of the key units in measuring circuit for weak DC signal and a design of digital filter were developed. The measuring circuit was examined, and the results of examination show that the measuring circuit can detect 1 nA DC current, and the average error is less than 2%, which agrees the requirement of on-line DC monitoring system with XLPE power cables for DC signal measurement.

AB - The measurement of weak DC signal is the key technique for on-line DC monitoring system with XLPE power cables to improve its measurement accuracy. Designs of the key units in measuring circuit for weak DC signal and a design of digital filter were developed. The measuring circuit was examined, and the results of examination show that the measuring circuit can detect 1 nA DC current, and the average error is less than 2%, which agrees the requirement of on-line DC monitoring system with XLPE power cables for DC signal measurement.

KW - Measuring circuit

KW - On-line monitoring

KW - Weak DC signal

KW - XLPE power cable

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Design of measurement circuit for weak DC signal

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