Transformer Equivalent Model for Switching Transients Computation

We measured transient recovery voltage (TRV) in a 1500 MVA-525 kV/276 kV/63 kV transformer of the three-phase-in-one-tank type. We proved that TRV can be measured by interrupting the current generated by discharging a capacitor of low voltage through the transformer. The current was interrupted at i...

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Bibliographic Details
Published inJournal of International Council of Electrical Engineering Vol. 1; no. 4; pp. 468 - 473
Main Authors Maekawa, Toshihiro, Nishiwaki, Susumu, Takahashi, Hideaki, Chigiri, Takeshi, Hosokawa, Osamu, Saida, Toshiyuki
Format Journal Article
LanguageEnglish
Published Routledge 01.10.2011
Subjects
Switching transient
Transformer
Transient recovery voltage
TRV
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Summary:We measured transient recovery voltage (TRV) in a 1500 MVA-525 kV/276 kV/63 kV transformer of the three-phase-in-one-tank type. We proved that TRV can be measured by interrupting the current generated by discharging a capacitor of low voltage through the transformer. The current was interrupted at its zero point by a diode at a low voltage. To calculate TRV via a computation, we developed a transformer equivalent model composed of a L-C multi-mesh circuit. The TRV waveform computed using the transformer equivalent model we developed agreed well with the measured TRV waveform.
ISSN:2234-8972
2234-8972
DOI:10.5370/JICEE.2011.1.4.468