Extreme stresses on generator circuit breakers

R.P.P. Smeets, H.D. Barts, L. Zehnder

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

7 Citations (Scopus)
1 Downloads (Pure)

Abstract

The operation of generator circuit breakers, located between generator and step-up transformer, is associated with extreme stresses due to the conduction and interruption of very large current, both in normal (up to 50 kA) as well as in fault situations (up to 200 kA). Moreover, after interruption, very severe transient recovery voltages appear across the breaker. This contribution discusses the technical solutions that are involved in the design and testing of generator circuit breakers, by example of a newly developed and certified generator circuit breaker for 28,000 – 50,000 A nominal current and 210 kA short-circuit current, for generating units up to 2000 MW. Key issues here are fault current commutation inside the breaker chamber and reduction of conductive heat losses. In addition, the actual standardisation status is described, along with the fault scenarios that are envisaged. Adequate test circuits, procedures and results, both for short-circuit test duties as well as for conductive heat loss evaluation are described.
Original languageEnglish
Title of host publicationProceedings CIGRE 2006, Paris France
Place of PublicationParis, France
PublisherCIGRE
PagesA3-306-1/10
Publication statusPublished - 2006
EventCIGRE 2006, Paris, France; 2006-08-25; 2006-09-03 - Paris, France
Duration: 25 Aug 20063 Sep 2006

Conference

ConferenceCIGRE 2006, Paris, France; 2006-08-25; 2006-09-03
CountryFrance
CityParis
Period25/08/063/09/06

Fingerprint

Electric circuit breakers
Heat losses
Short circuit currents
Electric fault currents
Electric commutation
Standardization
Recovery
Networks (circuits)
Testing
Electric potential

Cite this

Smeets, R. P. P., Barts, H. D., & Zehnder, L. (2006). Extreme stresses on generator circuit breakers. In Proceedings CIGRE 2006, Paris France (pp. A3-306-1/10). Paris, France: CIGRE.
Smeets, R.P.P. ; Barts, H.D. ; Zehnder, L. / Extreme stresses on generator circuit breakers. Proceedings CIGRE 2006, Paris France. Paris, France : CIGRE, 2006. pp. A3-306-1/10
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abstract = "The operation of generator circuit breakers, located between generator and step-up transformer, is associated with extreme stresses due to the conduction and interruption of very large current, both in normal (up to 50 kA) as well as in fault situations (up to 200 kA). Moreover, after interruption, very severe transient recovery voltages appear across the breaker. This contribution discusses the technical solutions that are involved in the design and testing of generator circuit breakers, by example of a newly developed and certified generator circuit breaker for 28,000 – 50,000 A nominal current and 210 kA short-circuit current, for generating units up to 2000 MW. Key issues here are fault current commutation inside the breaker chamber and reduction of conductive heat losses. In addition, the actual standardisation status is described, along with the fault scenarios that are envisaged. Adequate test circuits, procedures and results, both for short-circuit test duties as well as for conductive heat loss evaluation are described.",
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Smeets, RPP, Barts, HD & Zehnder, L 2006, Extreme stresses on generator circuit breakers. in Proceedings CIGRE 2006, Paris France. CIGRE, Paris, France, pp. A3-306-1/10, CIGRE 2006, Paris, France; 2006-08-25; 2006-09-03, Paris, France, 25/08/06.

Extreme stresses on generator circuit breakers. / Smeets, R.P.P.; Barts, H.D.; Zehnder, L.

Proceedings CIGRE 2006, Paris France. Paris, France : CIGRE, 2006. p. A3-306-1/10.

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

TY - GEN

T1 - Extreme stresses on generator circuit breakers

AU - Smeets, R.P.P.

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N2 - The operation of generator circuit breakers, located between generator and step-up transformer, is associated with extreme stresses due to the conduction and interruption of very large current, both in normal (up to 50 kA) as well as in fault situations (up to 200 kA). Moreover, after interruption, very severe transient recovery voltages appear across the breaker. This contribution discusses the technical solutions that are involved in the design and testing of generator circuit breakers, by example of a newly developed and certified generator circuit breaker for 28,000 – 50,000 A nominal current and 210 kA short-circuit current, for generating units up to 2000 MW. Key issues here are fault current commutation inside the breaker chamber and reduction of conductive heat losses. In addition, the actual standardisation status is described, along with the fault scenarios that are envisaged. Adequate test circuits, procedures and results, both for short-circuit test duties as well as for conductive heat loss evaluation are described.

AB - The operation of generator circuit breakers, located between generator and step-up transformer, is associated with extreme stresses due to the conduction and interruption of very large current, both in normal (up to 50 kA) as well as in fault situations (up to 200 kA). Moreover, after interruption, very severe transient recovery voltages appear across the breaker. This contribution discusses the technical solutions that are involved in the design and testing of generator circuit breakers, by example of a newly developed and certified generator circuit breaker for 28,000 – 50,000 A nominal current and 210 kA short-circuit current, for generating units up to 2000 MW. Key issues here are fault current commutation inside the breaker chamber and reduction of conductive heat losses. In addition, the actual standardisation status is described, along with the fault scenarios that are envisaged. Adequate test circuits, procedures and results, both for short-circuit test duties as well as for conductive heat loss evaluation are described.

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BT - Proceedings CIGRE 2006, Paris France

PB - CIGRE

CY - Paris, France

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Smeets RPP, Barts HD, Zehnder L. Extreme stresses on generator circuit breakers. In Proceedings CIGRE 2006, Paris France. Paris, France: CIGRE. 2006. p. A3-306-1/10