The performance of in-service shunt capacitor switching devices as investigated by CIGRE WG A3.38

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CIRED 2019 - 1312.pdf (248.12 KB)
Paper number
1312
Working Group Number
Conference name
CIRED 2019
Conference date
3-6 June 2019
Conference location
Madrid, Spain
Peer-reviewed
Yes
Short title
Convener
Authors
Dullni, Edgar, ABB AG, Germany
Baum, Benjamin, DNVGL, New Zealand
Desmond, Daniel, S&C Electric Comp., USA
Heinrich , Christian, Siemens, Germany
Abstract
CIGRE WG A3.38 started their work in 2016. A major component of the WG’s tasks is to update a survey on shunt capacitor bank switching from 1999 which was focused on transmission networks and to expand it into capacitor bank use in distribution networks. The survey shall give answers with respect to switching performance in the field, the types of switching devices used, and prevailing maintenance procedures.The long-term performance of capacitor bank switching devices is investigated by studying the relationship between peak energization inrush currents and restrikes during current interruption. Publications show that inrush current has a considerable impact on the interrupting performance of the switching device, in particular when capacitors are switched in a back-to-back configuration. Whereas the standards try to verify the classification of the device within 48 to 104 operations, capacitor switching devices are sometimes switched on a daily basis resulting in thousands of operations over their functional lifetime. Therefore, the WG aims to investigate whether type tests according to the standards are adequate to ensure the switching performance over the whole life of the equipment. 
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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/20.500.12455/362
http://dx.doi.org/10.34890/587
ISSN
2032-9644
ISBN
978-2-9602415-0-1