Abstract: A set-up for the measurement of the frequency response of voltage measurement transformers under actual waveform conditions is presented. It is based on a two steps 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. Some experimental tests are presented. Different frequency behaviors of voltage transformers are found with: different capacitive loading, different type of characterization (low voltage or medium voltage) different harmonic order.
Calibration of MV voltage instrument transformer in a wide frequency range / Crotti, G.; Gallo, D.; Giordano, D.; Landi, C.; Luiso, M.; Modarres, M.. - (2017), pp. 1-6. ((Intervento presentato al convegno Instrumentation and Measurement Technology Conference (I2MTC), tenutosi a Turin, Italy nel 22-25 May 2017 [10.1109/I2MTC.2017.7969770].
Calibration of MV voltage instrument transformer in a wide frequency range
Crotti, G.Membro del Collaboration Group
;Giordano, D.
Membro del Collaboration Group
;Modarres, M.Membro del Collaboration Group
2017
Abstract
Abstract: A set-up for the measurement of the frequency response of voltage measurement transformers under actual waveform conditions is presented. It is based on a two steps 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. Some experimental tests are presented. Different frequency behaviors of voltage transformers are found with: different capacitive loading, different type of characterization (low voltage or medium voltage) different harmonic order.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
