Compensation of Nonlinearity of Voltage and Current Instrument Transformers

Antonio Cataliotti, Valentina Cosentino, Antonio Delle Femine, Mario Luiso, Dario Di Cara, Domenico Giordano, Gabriella Crotti, Mohammad Modarres, Giovanni Tinè, Carmine Landi, Daniele Gallo

Risultato della ricerca: Article

19 Citazioni (Scopus)

Abstract

This paper aims at characterizing and improving the metrological performances of current and voltage instrument transformers (CTs and VTs) in harmonic measurements in the power system. A theoretical analysis is carried out to demonstrate that, due to the iron core nonlinearity, CT and VT output signal is distorted even when the input signal is a pure sine wave. Starting from this analysis, a new method for CT and VT characterization and compensation is proposed. In a first step, they are characterized in sinusoidal conditions and the harmonic phasors of the distorted output are measured; in the second step, these phasors are used to compensate the harmonic phasors measured in normal operating conditions, which are typically distorted. The proposed characterization and compensation techniques are called SINusoidal characterization for DIstortion COMPensation (SINDICOMP). Several experimental tests, using high-accuracy calibration setups, have been performed to verify the proposed methods. The experimental results showed that the SINDICOMP technique assures a significant improvement of CT and VT metrological performances in harmonic measurements.
Lingua originaleEnglish
pagine (da-a)1322-1332
Numero di pagine11
RivistaIEEE Transactions on Instrumentation and Measurement
Volume68
Stato di pubblicazionePublished - 2019

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instrument transformers
Electric instrument transformers
nonlinearity
harmonics
Electric potential
electric potential
output
sine waves
Calibration
Iron
iron
Compensation and Redress

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Electrical and Electronic Engineering

Cita questo

Compensation of Nonlinearity of Voltage and Current Instrument Transformers. / Cataliotti, Antonio; Cosentino, Valentina; Femine, Antonio Delle; Luiso, Mario; Di Cara, Dario; Giordano, Domenico; Crotti, Gabriella; Modarres, Mohammad; Tinè, Giovanni; Landi, Carmine; Gallo, Daniele.

In: IEEE Transactions on Instrumentation and Measurement, Vol. 68, 2019, pag. 1322-1332.

Risultato della ricerca: Article

Cataliotti, A, Cosentino, V, Femine, AD, Luiso, M, Di Cara, D, Giordano, D, Crotti, G, Modarres, M, Tinè, G, Landi, C & Gallo, D 2019, 'Compensation of Nonlinearity of Voltage and Current Instrument Transformers', IEEE Transactions on Instrumentation and Measurement, vol. 68, pagg. 1322-1332.
Cataliotti, Antonio ; Cosentino, Valentina ; Femine, Antonio Delle ; Luiso, Mario ; Di Cara, Dario ; Giordano, Domenico ; Crotti, Gabriella ; Modarres, Mohammad ; Tinè, Giovanni ; Landi, Carmine ; Gallo, Daniele. / Compensation of Nonlinearity of Voltage and Current Instrument Transformers. In: IEEE Transactions on Instrumentation and Measurement. 2019 ; Vol. 68. pagg. 1322-1332.
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AU - Cataliotti, Antonio

AU - Cosentino, Valentina

AU - Femine, Antonio Delle

AU - Luiso, Mario

AU - Di Cara, Dario

AU - Giordano, Domenico

AU - Crotti, Gabriella

AU - Modarres, Mohammad

AU - Tinè, Giovanni

AU - Landi, Carmine

AU - Gallo, Daniele

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AB - This paper aims at characterizing and improving the metrological performances of current and voltage instrument transformers (CTs and VTs) in harmonic measurements in the power system. A theoretical analysis is carried out to demonstrate that, due to the iron core nonlinearity, CT and VT output signal is distorted even when the input signal is a pure sine wave. Starting from this analysis, a new method for CT and VT characterization and compensation is proposed. In a first step, they are characterized in sinusoidal conditions and the harmonic phasors of the distorted output are measured; in the second step, these phasors are used to compensate the harmonic phasors measured in normal operating conditions, which are typically distorted. The proposed characterization and compensation techniques are called SINusoidal characterization for DIstortion COMPensation (SINDICOMP). Several experimental tests, using high-accuracy calibration setups, have been performed to verify the proposed methods. The experimental results showed that the SINDICOMP technique assures a significant improvement of CT and VT metrological performances in harmonic measurements.

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