CUED Publications database

Tests for conceptual design of 6.6 kV class superconducting fault current limiter with YBCO thin film elements

Nitta, T and Matsumura, T and Baba, J and Ainslie, MD and Torii, S and Kado, H and Kumagai, T and Shibuya, M (2009) Tests for conceptual design of 6.6 kV class superconducting fault current limiter with YBCO thin film elements. IEEE Transactions on Applied Superconductivity, 19. pp. 1964-1967. ISSN 1051-8223

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Abstract

A superconducting fault current limiter (SFCL) for 6.6 kV and 400 A installed in a cubicle for a distribution network substation was conceptually designed. The SFCL consists of parallel- and series-connected superconducting YBCO elements and a limiting resistor. Before designing the SFCL, some tests were carried out. The width and length of each element used in the tests are 30 mm and 210 mm, respectively. The element consists of YBCO thin film of about 200 nm in thickness on cerium dioxide (CeO2) as a cap-layer on a sapphire substrate by metal-organic deposition with a protective metal coat. In the tests, characteristics of each element, such as over-current, withstand-voltage, and so on, were obtained. From these characteristics, series and parallel connections of the elements, called units, were considered. The characteristics of the units were obtained by tests. From the test results, a single phase prototype SFCL was manufactured and tested. Thus, an SFCL rated at 6.6 kV and 400 A can be designed. © 2009 IEEE.

Item Type: Article
Uncontrolled Keywords: Fault current limiters High-temperature superconductors Parallel- and series-connection YBCO thin films
Subjects: UNSPECIFIED
Divisions: Div C > Materials Engineering
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 11:29
Last Modified: 08 Dec 2014 02:29
DOI: 10.1109/TASC.2009.2018114