NDLI: Novel Dual-FCL Connection for Adding Distributed Generation to a Power Distribution Utility

Content Provider	IEEE Xplore Digital Library
Author	Yucheng Zhang Dougal, R.A.
Copyright Year	2002
Abstract	A novel dual-connection of fault current limiters is described for use when connecting new distributed generation plants to the electric grid. The operation and control scheme of this connection are described and analysed. The proximate arrangement of the two current limiters has the advantage that they can share one cryogenic system. The dual connection limits fault currents sufficiently to avoid disturbing the original protection relay schemes of the utilities, and also improves synchronism between the new generator and the grid. These benefits are proven by simulations of a 36 MW, 4.16 kV gas turbine generator connected to an infinite grid. This dual-FCL connection reduces fault current contributions of the DG by 97% (from 41 to 1 kA), and maintains the circuit breakers within their duty limits when a three-phase fault occurs at a bus connected to the DG. Otherwise, when a three-phase fault occurs in the infinite system, this connection limits the fault current contribution of the DG from 4.8 to 0.4 kA, and frequency oscillations of the DG from 0.14 to 0.01 Hz. The power continuity in the local network is improved, as the voltage sag at the bus connected to the DG is reduced by 96% (from 851 to 32 V) during and after serious short-circuit faults.
Sponsorship	Council on Superconductivity Appl. Superconductivity Conference Inc MIT
Starting Page	2179
Ending Page	2183
Page Count	5
File Size	589905
File Format	PDF
ISSN	10518223
Volume Number	21
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-06-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Fault currents Circuit faults Relays Generators Voltage fluctuations Power system stability HTS Distributed generation dual-FCL
Content Type	Text
Resource Type	Article
Subject	Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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