A novel approach to current transformer characterization in the presence of harmonic distortion

Autor: A.E. Emanuel, Salvatore Nuccio, Dario Di Cara, Antonio Cataliotti
Přispěvatelé: Cataliotti, A, Di Cara, D, Emanuel, AE, Nuccio, S
Jazyk: angličtina
Rok vydání: 2009
Předmět:
Zdroj: IEEE transactions on instrumentation and measurement 58 (2009): 1446–1453. doi:10.1109/TIM.2008.2009419
info:cnr-pdr/source/autori:A. Cataliotti, D. Di Cara, A. E. Emanuel, S. Nuccio,/titolo:A novel approach to current transformer characterization in the presence of harmonic distortion/doi:10.1109%2FTIM.2008.2009419/rivista:IEEE transactions on instrumentation and measurement/anno:2009/pagina_da:1446/pagina_a:1453/intervallo_pagine:1446–1453/volume:58
DOI: 10.1109/TIM.2008.2009419
Popis: The current transformer (CT) performance under distorted waveform conditions is usually characterized by means of the frequency-response test. In this paper, a new way to characterize CTs, closer to real operation conditions, is proposed. The harmonic phase-angle and ratio errors are measured using a nonsinusoidal current composed of fundamental and one harmonic with adjustable phase shift. The new method was tested by determining the performance of two metering class CTs commonly used by the Italian power company. The errors measured using the proposed approach are larger than the ones obtained with the frequency response. This result suggests that the frequency-response approach for the evaluation of CT performance under distorted waveform conditions is not a reliable method. © 2008 IEEE.
Databáze: OpenAIRE