Frequency Response of MV Voltage Transformer Under Actual Waveforms

Crotti, Gabriella; Gallo, Daniele; Giordano, Domenico; Landi, Carmine; Luiso, Mario; Modarres, Mohammad

doi:10.1109/TIM.2017.2652638

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A setup for the measurement of the frequency response of voltage measurement transformers under actual waveform conditions is presented. It is based on a two-step procedure that makes use of high voltage gas insulated capacitors and a digital bridge. It allows calibrations using distorted waveforms, with a fundamental tone at medium voltage level and superimposed harmonics up to 20% and 15 kHz. Combined standard uncertainty in the measurement of the voltage transformer (VT) error is estimated at 200 µV/V for the ratio error and 300 µrad for the phase displacement up to 10 kHz. First applications to the measurement of the frequency response of VTs with different rated primary voltages up to 50 kV are presented.

Titolo:	Frequency Response of MV Voltage Transformer Under Actual Waveforms
Autori:	CROTTI, GABRIELLA Gallo, Daniele GIORDANO, DOMENICO Landi, Carmine Luiso, Mario Modarres, Mohammad mostra contributor esterni nascondi contributor esterni
Data di pubblicazione:	2017
Rivista:	IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT
Abstract:	A setup for the measurement of the frequency response of voltage measurement transformers under actual waveform conditions is presented. It is based on a two-step procedure that makes use of high voltage gas insulated capacitors and a digital bridge. It allows calibrations using distorted waveforms, with a fundamental tone at medium voltage level and superimposed harmonics up to 20% and 15 kHz. Combined standard uncertainty in the measurement of the voltage transformer (VT) error is estimated at 200 µV/V for the ratio error and 300 µrad for the phase displacement up to 10 kHz. First applications to the measurement of the frequency response of VTs with different rated primary voltages up to 50 kV are presented.
Handle:	http://hdl.handle.net/11696/54704
Appare nelle tipologie:	1.1 Articolo in rivista

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