Cristin-resultat-ID: 1185368
Sist endret: 4. mai 2023, 19:14
NVI-rapporteringsår: 2014
Resultat
Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
2014

A black-box approach to interfacing white-box transformer models with electromagnetic transients programs

Bidragsytere:
  • Bjørn Alfred Gustavsen og
  • Alvaro Portillo

Bok

2014 IEEE PES General Meeting, conference and exposition
ISBN:
  • 978-1-4799-6415-4

Utgiver

IEEE conference proceedings
NVI-nivå 1

Om resultatet

Vitenskapelig Kapittel/Artikkel/Konferanseartikkel
Publiseringsår: 2014
ISBN:
  • 978-1-4799-6415-4

Importkilder

Scopus-ID: 2-s2.0-84930999681

Klassifisering

Fagfelt (NPI)

Fagfelt: Elektrofag
- Fagområde: Realfag og teknologi

Beskrivelse Beskrivelse

Tittel

A black-box approach to interfacing white-box transformer models with electromagnetic transients programs

Sammendrag

The standard lightning impulse voltage wave used in transformer factory testing does not properly cover all the overvoltage stresses that a transformer can experience while in service. To properly asses the internal overvoltages that can occur in practice, we propose to interface the manufacturer's white-box transformer model with EMTP-type simulation tools using a black-box modeling approach. From the white-box model we compute in the frequency domain data for the blackbox model which are fitted with rational functions, including voltage transfer functions from external terminals to internal nodes. The resulting black-box model is easily interfaced with EMTP-type circuit solvers via a Norton equivalent and recursive convolution. Application to the so-called fictitious transformer used by CIGRE A2/C4.39 demonstrates that ground fault initiation on a connected cable can generate internal overvoltages that exceed those of the lightning impulse test.

Bidragsytere

Bjørn Alfred Gustavsen

  • Tilknyttet:
    Forfatter
    ved Energisystemer ved SINTEF Energi AS

Alvaro Portillo

  • Tilknyttet:
    Forfatter
    ved Brasil
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Resultatet er en del av Resultatet er en del av

2014 IEEE PES General Meeting, conference and exposition.

IEEE PES 2014, General meeting 2014. 2014, IEEE conference proceedings. Vitenskapelig antologi/Konferanseserie
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