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Implications of fault current limitation for electrical distribution networks

Blair, S.M. and Roscoe, A.J. and Booth, C.D. and Burt, G.M. and Teo, A. and Bright, C.G. (2010) Implications of fault current limitation for electrical distribution networks. In: IET International Conference on Developments in Power System Protection (DPSP). IET. ISBN 978-1-84919-239-2

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Abstract

This paper explores the potential future need for fault current limitation in the UK's power system, and some of the technical implications of this change. It is estimated that approximately 300-400 distribution substations will require fault current limitation, based on the statistical analysis of the projected fault level "headroom" (or violation). The analysis uses a UK electrical system scenario that satisfies the Government's target for an 80% cut in CO2 emissions by 2050. A case study involving the connection of distributed generation (DG) via a superconducting fault current limiter (SFCL) is used to illustrate the potential protection and control issues. In particular, DG fault ride-through, autoreclosure schemes, and transformer inrush current can be problematic for SFCLs that require a recovery period. The potential solutions to these issues are discussed, such as the use of islanding or automation to reduce the fault level.

Item type: Book Section
ID code: 33368
Keywords: fault current limiter, power distribution, power transformers, substation protection, Electrical engineering. Electronics Nuclear engineering
Subjects: Technology > Electrical engineering. Electronics Nuclear engineering
Department: Faculty of Engineering > Electronic and Electrical Engineering
Depositing user: Pure Administrator
Date Deposited: 16 Sep 2011 14:14
Last modified: 26 Mar 2015 17:47
URI: http://strathprints.strath.ac.uk/id/eprint/33368

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