Nanosecond switching transients recorded in a mining transformer installation

Author

Cornick, K.J. ; Kunji, A.M.

Author_Institution

Univ. of Manchester, Inst. of Sci. & Technol., UK

Volume

8

Issue

3

fYear

1993

fDate

7/1/1993 12:00:00 AM

Firstpage

1130

Lastpage

1137

Abstract

Tests carried out on a mining power transformer supply system to determine the severity of the switching transients developed with a range of system and plant conditions are described. Results obtained with vacuum and SF/sub 6/ circuit breakers are presented and indicate that very fast transients with wavefront durations as short as 10 ns are frequently produced. An examination of the transients is made, and the system and plant parameters that lead to the production of very fast transients are identified. Wavefront duration is mainly governed by system parameters and wave amplitude by the type of circuit breaker. The relevance of the results to other types of power transformer supply systems is indicated.<>

Keywords

mining; power system measurement; power system protection; power system transients; power transformers; switchgear testing; switching; transformer testing; 10 ns; SF/sub 6/; circuit breakers; mining; power system measurement; power transformer; protection; switchgear testing; switching transients; vacuum; very fast transients; wave amplitude; wavefront durations;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/61.252637

Filename

252637