You need JavaScript to view this

Fault current limitation with HTc superconductors; Limitation de courant a partir de materiaux supraconducteurs HTc

Abstract

This report deals with the possibility of using high critical temperature (HTc) superconductors for current limitation. The transition from a superconductive to a high dissipative state could be used to limit inrush currents. This application of superconductivity is very attractive because it's an innovative device for electrical networks without any conventional equivalence at high voltage. This device would allow to improve the density of connections and the continuity of the electrical distribution. This study can be divided into two fields. The aim of the first one is to analyse the behaviour of different HTc superconductors for current limitation. We carried out experimental measurements to characterise those conductors during a nominal AC rating (measurements of losses) and during a fault setting. Particularly, a description of the transition in bulk textured YBCO samples near Tc was made of inhomogeneous transition of the device and to estimate its losses. Finally, a 1 kV / 100 A demonstrator made of 43 meanders of textured YBCO was tested at 90,5 K. Thermal gradients seem to be responsible of the altering of some of the samples. The other part of this study concerns the dynamic of the transition. Near Tc, our experiments showed that the transition  More>>
Authors:
Publication Date:
Sep 15, 2002
Product Type:
Thesis/Dissertation
Report Number:
FRNC-TH-6422
Reference Number:
RN06037536; TVI: 0603
Resource Relation:
Other Information: TH: These genie electrique; 151 refs.
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION; HIGH-TC SUPERCONDUCTORS; CURRENT LIMITERS; TRANSITION TEMPERATURE; AC LOSSES; POWER DISTRIBUTION SYSTEMS
OSTI ID:
20699959
Research Organizations:
Institut National Polytechnique, 38 - Grenoble (France)
Country of Origin:
France
Language:
French
Other Identifying Numbers:
TRN: FR0600814
Availability:
Commercial reproduction prohibited; OSTI as DE20699959
Submitting Site:
FR
Size:
189 pages
Announcement Date:
Apr 08, 2006

Citation Formats

Buzon, D. Fault current limitation with HTc superconductors; Limitation de courant a partir de materiaux supraconducteurs HTc. France: N. p., 2002. Web.
Buzon, D. Fault current limitation with HTc superconductors; Limitation de courant a partir de materiaux supraconducteurs HTc. France.
Buzon, D. 2002. "Fault current limitation with HTc superconductors; Limitation de courant a partir de materiaux supraconducteurs HTc." France.
@misc{etde_20699959,
title = {Fault current limitation with HTc superconductors; Limitation de courant a partir de materiaux supraconducteurs HTc}
author = {Buzon, D}
abstractNote = {This report deals with the possibility of using high critical temperature (HTc) superconductors for current limitation. The transition from a superconductive to a high dissipative state could be used to limit inrush currents. This application of superconductivity is very attractive because it's an innovative device for electrical networks without any conventional equivalence at high voltage. This device would allow to improve the density of connections and the continuity of the electrical distribution. This study can be divided into two fields. The aim of the first one is to analyse the behaviour of different HTc superconductors for current limitation. We carried out experimental measurements to characterise those conductors during a nominal AC rating (measurements of losses) and during a fault setting. Particularly, a description of the transition in bulk textured YBCO samples near Tc was made of inhomogeneous transition of the device and to estimate its losses. Finally, a 1 kV / 100 A demonstrator made of 43 meanders of textured YBCO was tested at 90,5 K. Thermal gradients seem to be responsible of the altering of some of the samples. The other part of this study concerns the dynamic of the transition. Near Tc, our experiments showed that the transition is more homogeneous. Experimental measurements also showed the influence of thermal exchanges with the cryogenic surrounding on the transition. This point can be justified if the dissipated energy is locally concentrated. (author)}
place = {France}
year = {2002}
month = {Sep}
}