Cristin-resultat-ID: 1889103
Sist endret: 12. februar 2021, 10:52
NVI-rapporteringsår: 2021
Vitenskapelig artikkel

Passivity assessment and enforcement utilizing eigenpairs information

  • Bjørn Gustavsen


Electric power systems research
ISSN 0378-7796
e-ISSN 1873-2046
NVI-nivå 1

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2021
Publisert online: 2021
Volum: 194
Artikkelnummer: 107041
Open Access


Scopus-ID: 2-s2.0-85100077524

Beskrivelse Beskrivelse


Passivity assessment and enforcement utilizing eigenpairs information


Rational models can be a cause of unstable time domain simulations if they are non-passive. One commonly applied method for ensuring model passivity is to combine a passivity assessment step with a passivity enforcement step in an iterative loop where the model's residue matrices are updated in each pass. This paper shows a new variant of such scheme that is computationally more efficient than an existing one. The advantage is achieved by transferring eigenpairs information between the two steps, rather than frequency samples where passivity violations exist. This leads to fewer inactive constraints in the constrained least squares problem associated with the passivity enforcement step, and thereby faster solving. The new approach is combined with the residue perturbation method known as RP-NNLS for maximum performance. The resulting procedure is demonstrated for the modeling of components with many terminals, a white-box transformer impedance matrix, grounding mat admittance matrix, and a black-box transformer model obtained via frequency sweep measurements. © 2021


Bjørn Gustavsen

  • Tilknyttet:
    ved Energisystemer ved SINTEF Energi AS
1 - 1 av 1