Analysis of the effects of asymmetric faults in three-phase superconducting inductive fault current limiters

Inductive fault current limiters of magnetic shielding type can be described in terms of the excursion in the plane defined by flux linked with primary and line current, and this methodology has been previously applied to single-phase devices. Practical applications, however, require three-phase lim...

Full description

Saved in:
Bibliographic Details
Published in:Journal of physics. Conference series 2014-01, Vol.507 (3), p.32036-4
Main Authors: Ferreira, R, Pina, J M, Vilhena, N, Arsénio, P, Pronto, A G, Martins, J
Format: Article
Language:English
Subjects:
Asymmetry
Current limiters
Devices
Faults
Grounds
Line current
Magnetic shielding
Phase transformations
Physics
Planes
Superconductivity
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Inductive fault current limiters of magnetic shielding type can be described in terms of the excursion in the plane defined by flux linked with primary and line current, and this methodology has been previously applied to single-phase devices. Practical applications, however, require three-phase limiters, which, for the sake of compactness, may be built by three legged cores, instead of three single phase units. This has the advantage of using well established methods of power transformers industry, but the performance of the devices depends on the type of fault, e.g. phase to ground or phase to phase. For instance, in a three legged core, a phase to ground fault affects healthy phases, and these are the most frequent faults in distribution grids, where such systems are envisaged. The effects of asymmetric faults are analysed in this paper, by means of measured excursions in the linked flux-current plane.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/507/3/032036