Fault current limiting circuit breaker in distribution systems

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CIRED 2019 - 2050.pdf (528 KB)

Paper number

2050

Working Group Number

Conference name

CIRED 2019

Conference date

3-6 June 2019

Conference location

Madrid, Spain

Peer-reviewed

Yes

Short title

Convener

Authors

Backman, Magnus, ABB Corporate Research, Sweden
Eriksson, Thomas, ABB Corporate Research, Sweden
Hintzen, Tobias, ABB AG, Germany
Moutafidis, John, UK Power Networks, United Kingdom

Abstract

The Powerful CB project is a collaboration between UK Power Networks (UKPN) and ABB to develop and demonstrate, in a pilot, an 11 kV Fault Current Limiting Circuit Breaker, FLCB, in an existing UK Power Networks substation. The FLCB pilot is designed for 12 kV, 2000 A nominal current and will be tested with a prospective fault current of 25 kA. In operation it limits the prospective fault current to maximum 13 kA peak in less than 1 ms after the trip signal.It has been identified that a Fault Current Limiting Circuit Breaker is an attractive alternative compared to upgrading distribution substations when short circuit headroom is shrinking. A hybrid, mechanical and power electronics, fault current limiter concept is presented, which will be built, tested and installed in a London substation during 2019. The fast, compact, low loss and multi-shot FLCB makes it possible to run the distribution system at a higher fault level giving better system stability without the need of a complete upgrade of the substation. At the same time the technology enables more flexible and optimized connection of distributed generation and renewable energy sources, independent of existing fault level headroom.

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Publisher

AIM

Date

2019-06-03

Published in

CIRED 2019 Conference

Permanent link to this record

https://cired-repository.org/handle/20.500.12455/707
http://dx.doi.org/10.34890/930

ISSN

2032-9644

ISBN

978-2-9602415-0-1