Frequency Response of MV Voltage Transformer Under Actual Waveforms

被引:42
作者
Crotti, Gabriella [1 ]
Gallo, Daniele [2 ]
Giordano, Domenico [1 ]
Landi, Carmine [2 ]
Luiso, Mario [2 ]
Modarres, Mohammad [3 ]
机构
[1] Ist Nazl Ric Metrol, I-10135 Turin, Italy
[2] Univ Campania Luigi Vanvitelli, Dept Ind & Informat Engn, I-81031 Aversa, Italy
[3] Politecn Torino, Dipartimento Energia, I-10129 Turin, Italy
关键词
Calibration; frequency response; measurement uncertainty; medium voltage (MV); voltage transformers (VTs);
D O I
10.1109/TIM.2017.2652638
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
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 mu V/V for the ratio error and 300 mu rad 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.
引用
收藏
页码:1146 / 1154
页数:9
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