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Motion studies of cathode roots in high current arcs using an optical fibre array based imaging system

Motion studies of cathode roots in high current arcs using an optical fibre array based imaging system
Motion studies of cathode roots in high current arcs using an optical fibre array based imaging system
This paper presents an integrated portable measurement system for the study of high speed and high temperature unsteady plasma flows such as those found in the vicinity of high current switching arcs. The system permits direct and non-intrusive measurement of arc light emission images with a capture rate of 1 million images per second (1MHz), and 8 bit intensity resolution. Novel software techniques are reported to measure arc trajectories. Results are presented on single high current (2kA) discharge events where the electrode and arc runner surfaces are investigated using 3D laser scanning methods; such that the position of the arc roots on the runner can be correlated to the measured trajectories. The results show evidence of the cathode arc root stepping along the arc runners, and regions of where the arc runner is eroded by a stationary arc.
electric arc, arc imaging, current limiting circuit breakers
1-4
McBride, J.W.
d9429c29-9361-4747-9ba3-376297cb8770
Sharkh, S.M.
c8445516-dafe-41c2-b7e8-c21e295e56b9
Cross, K.J.
6d26e05d-3a5d-40bb-9529-4ce7f0c8320d
Kim, S.Y.
c47e1288-8a84-4108-b564-0e931da35e6a
McBride, J.W.
d9429c29-9361-4747-9ba3-376297cb8770
Sharkh, S.M.
c8445516-dafe-41c2-b7e8-c21e295e56b9
Cross, K.J.
6d26e05d-3a5d-40bb-9529-4ce7f0c8320d
Kim, S.Y.
c47e1288-8a84-4108-b564-0e931da35e6a

McBride, J.W., Sharkh, S.M., Cross, K.J. and Kim, S.Y. (2009) Motion studies of cathode roots in high current arcs using an optical fibre array based imaging system. Technical Committee on Electromechanical Devices (EMD), Tokyo, Japan. 19 - 20 Nov 2009. pp. 1-4 .

Record type: Conference or Workshop Item (Paper)

Abstract

This paper presents an integrated portable measurement system for the study of high speed and high temperature unsteady plasma flows such as those found in the vicinity of high current switching arcs. The system permits direct and non-intrusive measurement of arc light emission images with a capture rate of 1 million images per second (1MHz), and 8 bit intensity resolution. Novel software techniques are reported to measure arc trajectories. Results are presented on single high current (2kA) discharge events where the electrode and arc runner surfaces are investigated using 3D laser scanning methods; such that the position of the arc roots on the runner can be correlated to the measured trajectories. The results show evidence of the cathode arc root stepping along the arc runners, and regions of where the arc runner is eroded by a stationary arc.

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Published date: November 2009
Venue - Dates: Technical Committee on Electromechanical Devices (EMD), Tokyo, Japan, 2009-11-19 - 2009-11-20
Keywords: electric arc, arc imaging, current limiting circuit breakers

Identifiers

Local EPrints ID: 69648
URI: http://eprints.soton.ac.uk/id/eprint/69648
PURE UUID: de50a173-50d5-400d-98cc-14d39fa0024d
ORCID for J.W. McBride: ORCID iD orcid.org/0000-0002-3024-0326
ORCID for S.M. Sharkh: ORCID iD orcid.org/0000-0001-7335-8503

Catalogue record

Date deposited: 24 Nov 2009
Last modified: 14 Mar 2024 02:38

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Contributors

Author: J.W. McBride ORCID iD
Author: S.M. Sharkh ORCID iD
Author: K.J. Cross
Author: S.Y. Kim

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