NDLI: Improved Configuration of the Inductive Core-Saturation Fault Current Limiter with the Magnetic Decoupling

Content Provider	IEEE Xplore Digital Library
Author	Cvoric, D. de Haan, S. Ferreira, J.A.
Copyright Year	2008
Description	Author affiliation: Tech. Univ. Delft, Delft (Cvoric, D.; de Haan, S.; Ferreira, J.A.)
Abstract	Due to the increasing levels of the short-circuit currents, the fault current limiters (FCLs) are expected to play an important role in the protection of the future power grids. The inductive FCLs, that have a dc winding that drives the core into saturation, are particularly interesting due to their inherent reaction on the fault. To avoid an over-voltage on the dc winding during a fault, FCL with decoupled ac and dc magnetic circuits has been proposed [5]. However, this FCL configuration reduces the value of the normal current, since its ac leg operates around saturation knee, i.e. the FCL impedance increases during the nominal operation. The size of the core and the peak value of the limited fault current have to be increased if the FCL impedance in the normal operation is to be diminished. This paper presents an improved version of the inductive FCL with magnetic decoupling of ac and dc circuits. The new FCL design reduces the device weight and size, while decreasing the FCL impedance to a low value during the normal operation. The increase of the peak value of the limited fault current is avoided. Comparison results are obtained through simulations in software SaberDesigner.
Starting Page	1
Ending Page	7
File Size	227551
Page Count	7
File Format	PDF
ISBN	9781424422784
ISSN	01972618
DOI	10.1109/08IAS.2008.356
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2008-10-05
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetic cores Power grids Impedance Circuit faults Fault current limiters Protection Magnetic circuits Saturation magnetization Fault currents Leg
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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