Pattern Recognition of Typical Incipient Mechanical Failures in Circuit Breakers

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To detect circuit breaker mechanical failures that are still in their early stages in order to avoid more serious failures and ensure reliable and safety of the grid operation, we uses a type ZW17-40.5 35 kV circuit breaker to simulate three typical incipient mechanical failures about stagnation of the energy storage spring, the dowel on the connecting rod and the moving arc. This analysis uses a digital camera detection method to record the processes for normal circuit breaker opening and closing conditions and conditions under stagnation. Additionally, by using a specially developed software to extract travel, speed and acceleration of specific location in every frame, we can discover features of the mechanical failure from the resulting data. This article provides a basis for identifying characteristics of stagnation and state monitoring of circuit breakers.

Info:

Periodical:

Advanced Materials Research (Volumes 228-229)

Edited by:

Quanjie Gao

Pages:

1063-1069

DOI:

10.4028/www.scientific.net/AMR.228-229.1063

Citation:

F. Fan and W. Wang, "Pattern Recognition of Typical Incipient Mechanical Failures in Circuit Breakers", Advanced Materials Research, Vols. 228-229, pp. 1063-1069, 2011

Online since:

April 2011

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$35.00

[1] G. Mazza, R. Michaca: The First International Enquiry on Circuit-Breaker Failures and Defects in Service, ELECTRA, Nr. 79, Dec. 1981, p.21.

[2] J. Beierer, R. Kearsley, J. Verdon: Maintenance of Modern High Voltage Circuit-Breakers, ELECTRA, Nr. 102, Oct. 1985, p.119.

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