Fault current limiting circuit breaker in distribution systems

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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.
Table of content
Keywords
Publisher
AIM
Date
2019-06-03
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