Calibrating an Instrument Voltage Transformer to Achieve Reduced Uncertainty

被引：0

作者：

Draxler, Karel ^{[1
]}

Styblikova, Renata ^{[2
]}

机构：

[1] Czech Tech Univ, Dept Measurements, Fac Elect Engn, Prague 6, Czech Republic

[2] Czech Metrology Inst, Dept Instrument Transformers, Prague, Czech Republic

来源：

I2MTC: 2009 IEEE INSTRUMENTATION & MEASUREMENT TECHNOLOGY CONFERENCE, VOLS 1-3 | 2009年

关键词：

instrument voltage transformer; calibration; uncertainty; lock-in amplifier; inductive divider;

D O I：

暂无

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

This paper describes the use of a lock-in amplifier to determine the error between a standard Instrument Voltage Transformer and the Instrument Voltage Transformer (IVT) that is being tested. The method reduces the uncertainty of the measured IVT errors in comparison with commercially produced devices. In addition, we describe an IVT calibration method for different primary voltage values of a standard IVT and the calibrated IVT. When there are different transformation ratios, special inductive dividers (ID) are used which match the secondary voltages of the two IVTs at the same value.

引用

页码：1515 / +

页数：3

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