A new calibration method for current and voltage sensors used in power quality measurements

被引：2
|
作者：
Ramos, Pedro M. [1 ]
Bras, Nuno B. [1 ]
Serra, A. Cruz [1 ]
机构：
[1] Univ Tecn Lisboa, Inst Super Tecn, Dept Elect & Comp Engn, Inst Telecomunicacoes, Av Rovisco Pais 1, P-1049001 Lisbon, Portugal
来源：
2006 IEEE INSTRUMENTATION AND MEASUREMENT TECHNOLOGY CONFERENCE PROCEEDINGS, VOLS 1-5 | 2006年
关键词：
power quality; sensor calibration; sine-fitting;
D O I：
10.1109/IMTC.2006.328579
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Sensor calibration plays an important role in instrument development and accuracy. This paper presents a method to calibrate current and voltage sensors specially dedicated to power quality measurements which can significantly reduce the distortions introduced by the sensors. The first approach to sensor calibration is based on the response of sensors to DC values imposed by a calibrator. The second method is an AC calibration, where a 50 Hz power signal is applied to the sensors also through a calibrator. The calibration coefficients are obtained by minimizing the output distortion. The minimized output distortion is assessed by the signal to noise and distortion ratio (SINAD) at the output of the sensor correction module.
引用
收藏
页码：2283 / +
页数：2
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