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

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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