Development of a resonant frequency converter for partial discharge tests on potential transformers

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dc.contributor.authorYutthagowith, P.
dc.contributor.authorPrombud, T.
dc.contributor.authorLeelachariyakul, B.
dc.date.accessioned2026-08-06T10:20:09Z
dc.date.available2026-08-06T10:20:09Z
dc.date.issued2018-06-08
dc.description.abstractIn this paper, the development of a partial discharge testing system based on a resonant frequency converter for potential transformers (PTs) is presented. The system is composed of a power low-voltage variable frequency converter connected with a frequency tuning circuit, a high-voltage testing transformer, and a conventional partial discharge detection system. The performances of the developed system in comparison with the conventional PWM frequency converter were investigated terms of the quality of the output voltage from the high-voltage testing transformer, i.e. the voltage difference (peak voltage/square root of 2 and rms voltage), total harmonic distortion of the output high voltages (THDv), and background noises in the partial discharge test. It is found that the developed system based on the resonant frequency converter provides the better performances (in terms of the output voltage from a testing transformer, the voltage difference, THDv, and background noise) than those of the PWM converter. The voltage difference and THDv are lower than 2%, and the background noise is less than 2.5 pC. In addition, the developed system has been used for the real partial test on a potential transformer in the distribution system successfully. The developed inverter is an attractive choice in the PD tests of potential transformers.
dc.identifier.citationProceedings of International Conference on Harmonics and Quality of Power Ichqp, 2018-May, 1-5, 2018
dc.identifier.doi10.1109/ICHQP.2018.8378932
dc.identifier.issn15406008
dc.identifier.other2-s2.0-85049247826
dc.identifier.urihttps://dspace.kmitl.ac.th/handle/123456789/8632
dc.sourceProceedings of International Conference on Harmonics and Quality of Power Ichqp
dc.subjecthigh-voltage tests
dc.subjectpartial discharge
dc.subjectpotential transformer
dc.subjectpower variable frequency converter
dc.subjectresonant circuit
dc.titleDevelopment of a resonant frequency converter for partial discharge tests on potential transformers
dc.typeConference Paper

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