A New Calibration Method for Current and Voltage Sensors Used in Power Quality Measurements

Author

Ramos, Pedro M. ; Brás, Nuno B. ; Serra, A. Cruz

Author_Institution

Dept. of Electr. & Comput. Eng., Tech. Univ. of Lisbon

fYear

2006

fDate

24-27 April 2006

Firstpage

2283

Lastpage

2288

Abstract

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

Keywords

Hall effect transducers; calibration; distortion; electric current measurement; electric sensing devices; power supply quality; voltage measurement; 50 Hz; AC calibration; current sensors; distortion ratio; instrument accuracy; instrument development; power quality measurement; sensor calibration; signal to noise ratio; sine-fitting; voltage sensors; Calibration; Current measurement; Data acquisition; Hall effect; Instruments; Linearity; Power measurement; Power quality; Transducers; Voltage; power quality; sensor calibration; sine-fitting;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2006. IMTC 2006. Proceedings of the IEEE

Conference_Location

Sorrento

ISSN

1091-5281

Print_ISBN

0-7803-9359-7

Electronic_ISBN

1091-5281

Type

conf

DOI

10.1109/IMTC.2006.328579

Filename

4124767