Preliminary tests on a superconducting power transformer

Author

Fevrier, A. ; Tavergnier, J.P. ; Laumond, Y. ; Bekhaled, M.

Author_Institution

Lab. de Marcoussis, France

Volume

24

Issue

2

fYear

1988

fDate

3/1/1988 12:00:00 AM

Firstpage

1477

Lastpage

1480

Abstract

Test results for a 50-Hz single-phase power superconducting transformer are presented and discussed. The near-ambient-temperature iron core, of conventional shape, is situated in a fiber-glass reinforced-composite inner vessel which is vacuum insulated from the He bath. The iron core is cooled by an inner channel. Inter-leaved low-voltage and high-voltage windings are wound around the inner vessel by halved formers and cooled by natural convection in a 4.21 K He bath. The tests demonstrated construction feasibility (showing considerable weight reduction compared with nonsuperconducting designs); increased efficiency for power levels of about 1 MVA; and fault current strongly limited by the high value of conductor matrix resistivity.

Keywords

fault currents; power transformers; superconducting devices; transformer testing; 1 MVA; 50 Hz; conductor matrix resistivity; construction feasibility; efficiency; fault current limitation; halved formers; natural convection; superconducting power transformer; transformer test results; windings; Conductors; Fault currents; Helium; Iron; Optical fiber testing; Power transformer insulation; Power transformers; Shape; Transformer cores; Wounds;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.11523

Filename

11523