Cristin-resultat-ID: 1410311
Sist endret: 27. januar 2017, 09:58
NVI-rapporteringsår: 2016
Resultat
Vitenskapelig artikkel
2016

Inclusion of Wire Twisting Effects in Cable Impedance Calculations

Bidragsytere:
  • Bjørn Alfred Gustavsen
  • Martin Høyer-Hansen
  • Piero Triverio og
  • Utkarsh R. Patel

Tidsskrift

IEEE Transactions on Power Delivery
ISSN 0885-8977
e-ISSN 1937-4208
NVI-nivå 2

Om resultatet

Vitenskapelig artikkel
Publiseringsår: 2016
Publisert online: 2016
Volum: 31
Hefte: 6
Sider: 2520 - 2529
Open Access

Importkilder

Scopus-ID: 2-s2.0-84993983928

Beskrivelse Beskrivelse

Tittel

Inclusion of Wire Twisting Effects in Cable Impedance Calculations

Sammendrag

Cable-series impedance modeling is widely applied in electromagnetic transients simulations and power-loss calculations. The calculations are usually performed in a 2-D frame using the finite-element method or alternative approaches, such as MoM-SO, thereby losing the 3-D effects imposed by twisting wire screens and armors. One of the implications of using 2-D modeling for three-core and closely packed single-core cables is that currents will always circulate among the individual wires of each wire screen or armor. However, in the case of twisted screens/armors where the wires are insulated from each other, such current circulation will in reality not exist. As a result, the calculated impedances become incorrect as well as the induced currents and losses on individual conductors. A procedure is introduced for preventing such false current circulations in a 2-D calculation frame by simple manipulation of the system impedance matrix. The approach is demonstrated for the modeling of single-core and three-core cables, with and without external armor. It is shown that the representation of the wire screen/armor armor with respect to current circulations can substantially influence the calculated result, both for the 50/60 Hz impedance and the cable transient behavior. The use of tubular screen representations is also investigated

Bidragsytere

Bjørn Gustavsen

Bidragsyterens navn vises på dette resultatet som Bjørn Alfred Gustavsen
  • Tilknyttet:
    Forfatter
    ved Energisystemer ved SINTEF Energi AS

Martin Høyer-Hansen

  • Tilknyttet:
    Forfatter
    ved Elkraftteknologi ved SINTEF Energi AS

Piero Triverio

  • Tilknyttet:
    Forfatter
    ved University of Toronto

Utkarsh R. Patel

  • Tilknyttet:
    Forfatter
    ved University of Toronto
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