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Positive streamer discharges along insulating surfaces

Akyuz, M; Gao, L; Cooray, V; Gustavsson, T. G; Gubanski, S. M and Larsson, A (2001) In IEEE Transactions on Dielectrics and Electrical Insulation 8(6). p.902-910
Abstract
By measuring the currents associated with the streamer discharge along silicone rubber surfaces, parameters of streamer propagation such as the minimum field of streamer crossing, the field of stable streamer propagation, the mean velocity and the streamer charge distribution have been analyzed and compared to the streamer discharge in air alone. Clear differences were observed in the measured currents for the individual surfaces at low background fields (285 kV/m). For higher fields the streamer crosses the gap almost independently of the surface type. The minimum streamer field was found to be slightly increased compared to air. The field of stable streamer propagation also was higher than in air. It is similar to 570 kV/m, larger than... (More)
By measuring the currents associated with the streamer discharge along silicone rubber surfaces, parameters of streamer propagation such as the minimum field of streamer crossing, the field of stable streamer propagation, the mean velocity and the streamer charge distribution have been analyzed and compared to the streamer discharge in air alone. Clear differences were observed in the measured currents for the individual surfaces at low background fields (285 kV/m). For higher fields the streamer crosses the gap almost independently of the surface type. The minimum streamer field was found to be slightly increased compared to air. The field of stable streamer propagation also was higher than in air. It is similar to 570 kV/m, larger than that of the streamer discharge in air (similar to 500), under the same conditions. The streamer speed was found slightly increased in the presence of the silicone rubber surface and the distinction between the individual surfaces was modest. A discussion on possible mechanisms for the observed differences in the streamer speed and currents with and without the insulator surfaces is presented. The net positive charge of the streamer along an insulating surface seems to be distributed along the streamer channel rather than localized in the front part of the channel as the case for the streamer in air. (Less)
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author
publishing date
type
Contribution to journal
publication status
published
subject
in
IEEE Transactions on Dielectrics and Electrical Insulation
volume
8
issue
6
pages
902 - 910
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • scopus:0035690962
ISSN
1070-9878
DOI
10.1109/94.971444
language
English
LU publication?
no
id
e90b74f7-5774-4df5-aacc-7275a50e93b7 (old id 2257028)
date added to LUP
2012-02-24 15:21:58
date last changed
2017-04-09 04:33:11
@article{e90b74f7-5774-4df5-aacc-7275a50e93b7,
  abstract     = {By measuring the currents associated with the streamer discharge along silicone rubber surfaces, parameters of streamer propagation such as the minimum field of streamer crossing, the field of stable streamer propagation, the mean velocity and the streamer charge distribution have been analyzed and compared to the streamer discharge in air alone. Clear differences were observed in the measured currents for the individual surfaces at low background fields (285 kV/m). For higher fields the streamer crosses the gap almost independently of the surface type. The minimum streamer field was found to be slightly increased compared to air. The field of stable streamer propagation also was higher than in air. It is similar to 570 kV/m, larger than that of the streamer discharge in air (similar to 500), under the same conditions. The streamer speed was found slightly increased in the presence of the silicone rubber surface and the distinction between the individual surfaces was modest. A discussion on possible mechanisms for the observed differences in the streamer speed and currents with and without the insulator surfaces is presented. The net positive charge of the streamer along an insulating surface seems to be distributed along the streamer channel rather than localized in the front part of the channel as the case for the streamer in air.},
  author       = {Akyuz, M and Gao, L and Cooray, V and Gustavsson, T. G and Gubanski, S. M and Larsson, A},
  issn         = {1070-9878},
  language     = {eng},
  number       = {6},
  pages        = {902--910},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Dielectrics and Electrical Insulation},
  title        = {Positive streamer discharges along insulating surfaces},
  url          = {http://dx.doi.org/10.1109/94.971444},
  volume       = {8},
  year         = {2001},
}