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Smartcoil - Design, assembly and test of a 10 MVA superconducting air coil fault current limiter

Kudymow, Andrej 1; Bauer, A.; Elschner, Steffen 1; Goldacker, Wilfried 1; Kraemer, H.-P.; Noe, Mathias 1; Strauss, Severin 1; Schacherer, C.
1 Institut für Technische Physik (ITEP)

Abstract (englisch):
Within a German government funded project the partners Siemens AG and KIT have developed an iron-free inductive current limiter. The project aimed at a device for the medium voltage range, i.e. U = 10 kV with a nominal power of 10 MVA. One phase of this limiter was designed, manufactured and successfully tested. The limiter is based on a stack of closed superconducting ReBCO rings inserted into a conventional reactor coil. Under normal operation conditions, the rings shield the inner part of this coil. With the occurrence of a short circuit the superconducting rings quench and the impedance of the reactor coil becomes effective. The paper reports the principles of the design and the development of the superconducting ReBCO rings. It describes in detail the test of such rings, in particular the contactless determination of contact resistances and critical currents. Of particular importance was the development of a cryostat which minimizes the distance between the primary reactor coil and the superconducting insert. Finally, the device was tested in the Siemens test field in Berlin under the most relevant operation conditions. The limiting behavior complied with the predicted properties.

DOI: 10.1088/1361-6668/ab099a
Zitationen: 4
Web of Science
Zitationen: 3
Zitationen: 2
Zugehörige Institution(en) am KIT Institut für Technische Physik (ITEP)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2019
Sprache Englisch
Identifikator ISSN: 0953-2048, 1361-6668
KITopen-ID: 1000096386
HGF-Programm 37.06.02 (POF III, LK 01) New Power Network Technology
Erschienen in Superconductor science and technology
Verlag Institute of Physics Publishing Ltd (IOP Publishing Ltd)
Band 32
Heft 6
Seiten Art.-Nr.: 065002
Schlagwörter superconducting fault current limiter, variable inductance, current limiting reactor, iron-core free limiter, air coil fault current limiter
Nachgewiesen in Dimensions
Web of Science
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