Acoustic diagnosis of high voltage circuit-breakers

Author

Runde, M. ; Aurud, T. ; Lundgaard, L.E. ; Ottesen, G.E. ; Faugstad, K.

Author_Institution

Norwegian Electr. Power Res. Inst., Trondheim, Norway

Volume

7

Issue

3

fYear

1992

fDate

7/1/1992 12:00:00 AM

Firstpage

1306

Lastpage

1315

Abstract

A noninvasive technique for assessing the condition of circuit breakers by considering the acoustic signals generated during nonenergized switching is described. Mechanical malfunction, wear, and other types of abnormal behavior can be detected as changes in this acoustic signature. Digital signal processing techniques known from speech recognition were successfully applied to extract, compare, and present the information from the breaker signatures. A fault in the release mechanism which developed over time and eventually rendered one pole of a circuit-breaker inoperative was detected in an early stage, demonstrating the efficiency of this diagnostic technique

Keywords

acoustic applications; acoustic signal processing; circuit breakers; computerised signal processing; HV circuit breakers; abnormal behavior; acoustic signal diagnosis; breaker signatures; digital signal processing; mechanical malfunction; nonenergized switching; wear; Acoustic signal detection; Circuit breakers; Circuit faults; Data mining; Digital signal processing; Noninvasive treatment; Signal generators; Speech recognition; Switching circuits; Voltage;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.141847

Filename

141847