Test of a 1 kA superconducting fault current limiter for DC applications

被引：30

作者：

Kraemer, HP ^{[1
]}

Schmidt, W ^{[1
]}

Utz, B ^{[1
]}

Wacker, B ^{[1
]}

Neumueller, HW ^{[1
]}

Ahlf, G ^{[1
]}

Hartig, R ^{[1
]}

机构：

[1] Siemens AG, D-91050 Erlangen, Germany

来源：

IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY | 2005年 / 15卷 / 02期

关键词：

fault current limiter; short circuit current; standalone power systems; superconductivity; YBCO thin films;

D O I：

10.1109/TASC.2005.849433

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A low voltage fault current limiter (FCL) having a nominal current of 1 kA has been set up using switching elements based on YBCO thin films fabricated by reactive thermal co-evaporation. The films showed critical current densities exceeding 1 MA/cm(2) @ 77 K. After patterning and contacting the films, the elements have been assembled in a closed cryostat for operation in a liquid nitrogen bath. The FCL model was successfully tested using prospective fault currents from 25 kA to 150 kA. The electric data show a peak current of 2.7 kA within 1 ms and a limitation to approximately nominal current within 5 ms. Due to this fast response of the YBCO switching elements, FCL coupled grids can be instantaneously decoupled during a fault, leaving the faultless part of the grid practically unimpaired.

引用

页码：1986 / 1989

页数：4

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