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
November 2009
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.
.
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.
Text
IS-EMD2009_JMcB.pdf
- Other
More information
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
Catalogue record
Date deposited: 24 Nov 2009
Last modified: 14 Mar 2024 02:38
Export record
Contributors
Author:
K.J. Cross
Author:
S.Y. Kim
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
