Saturated core high-temperature superconducting fault current limiters as an alternative to conventional series reactors in a distribution grid

Cabanes Aracil, Jaime, Lopez-Roldan, Jose, Coetzee, Jacob, Darmann, Frank, & Tang, Tee (2012) Saturated core high-temperature superconducting fault current limiters as an alternative to conventional series reactors in a distribution grid. In Proceedings of the 10th International Conference on AC and DC Power Transmission, The Institution of Engineering and Technology (IET), Holiday Inn, Birmingham.

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Series reactors are used in distribution grids to reduce the short-circuit fault level. Some of the disadvantages of the application of these devices are the voltage drop produced across the reactor and the steep front rise of the transient recovery voltage (TRV), which generally exceeds the rating of the associated circuit breaker. Simulations were performed to compare the characteristics of a saturated core High-Temperature Superconducting Fault Current Limiter (HTS FCL) and a series reactor. The design of the HTS FCL was optimized using the evolutionary algorithm. The resulting Pareto frontier curve of optimum solution is presented in this paper. The results show that the steady-state impedance of an HTS FCL is significantly lower than that of a series reactor for the same level of fault current limiting. Tests performed on a prototype 11 kV HTS FCL confirm the theoretical results. The respective transient recovery voltages (TRV) of the HTS FCL and an air core reactor of comparable fault current limiting capability are also determined. The results show that the saturated core HTS FCL has a significantly lower effect on the rate of rise of the circuit breaker TRV as compared to the air core reactor. The simulations results are validated with shortcircuit test results.

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ID Code: 58279
Item Type: Conference Paper
Refereed: Yes
Additional URLs:
Keywords: fault current limiters, finite element method, magnetic flux, saturable cores, short circuit currents
ISBN: 9781849197007
ISSN: 0537-9989
Subjects: Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > ELECTRICAL AND ELECTRONIC ENGINEERING (090600) > Power and Energy Systems Engineering (excl. Renewable Power) (090607)
Divisions: Current > Schools > School of Electrical Engineering & Computer Science
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2012 The Institution of Engineering and Technology
Copyright Statement: All rights reserved. Apart from any copying under the U.K. Copyright, Designs and Patents Act 1988, Part 1, Section 38, whereby a single copy of an article may be supplied, under certain conditions, for the purposes of research or private study, by a library of a class prescribed by The Copyright (Librarians and Archivists) (Copying of Copyright Material) regulations 1989: SI 1989/1212, no part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means without the prior permission of the copyright owners. Permission is, however, not required to copy abstracts of papers or articles on condition that a full reference to the source is shown.
Deposited On: 14 Mar 2013 22:25
Last Modified: 29 Mar 2013 04:06

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