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Abstract
Voltage transformers are widely used in power quality monitoring systems in medium and high voltage grids. This paper presents accuracy problems related to voltage harmonics transfer through instrument transformers. A simplified lumped-parameters wideband circuit model of the voltage transformer is proposed and verified by simulation and experimental investigations. A number of voltage transformers have been tested in the frequency range up to 30 MHz. The obtained results prove that broadband voltage transfer characteristic of the voltage transformer usually exhibits various irregularities, especially in high frequency range, which are related to windings' parasitic capacitances and cannot be neglected in accuracy analysis.
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- Category:
- Articles
- Type:
- artykuł w czasopiśmie wyróżnionym w JCR
- Published in:
-
Przegląd Elektrotechniczny
pages 54 - 56,
ISSN: 0033-2097 - Language:
- English
- Publication year:
- 2012
- Bibliographic description:
- Łuszcz J.: Voltage Harmonics Transfer through Medium Voltage Instrument Transformers // Przegląd Elektrotechniczny. -, nr. nr 8 (2012), s.54-56
- Verified by:
- Gdańsk University of Technology
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