Advanced

New investigations of the \'early streamer emission\' principle

Allen, N.L and Evans, J.C (2000) In IEE Proceedings - Science Measurement and Technology 147(5). p.243-248
Abstract
An 'early streamer emission' (ESE) terminal, for lightning protection, stimulates a burst of streamers from its tip before producing streamers induced by the field of a downward leader, approaching from a thundercloud. It has been claimed to enhance the probability of attachment of a lightning channel to a protection system. Experiments are described in which the performance of a simulated 'early streamer emission' terminal has been characterised. A negative slow-front impulse voltage has been applied to a plane suspended over a vertical rod to simulate the rise of electric field at the tip of the rod, which would be caused by an approaching leader discharge from a cloud. A positive auxiliary voltage impulse, of profile 1/30 mu;s. Of... (More)
An 'early streamer emission' (ESE) terminal, for lightning protection, stimulates a burst of streamers from its tip before producing streamers induced by the field of a downward leader, approaching from a thundercloud. It has been claimed to enhance the probability of attachment of a lightning channel to a protection system. Experiments are described in which the performance of a simulated 'early streamer emission' terminal has been characterised. A negative slow-front impulse voltage has been applied to a plane suspended over a vertical rod to simulate the rise of electric field at the tip of the rod, which would be caused by an approaching leader discharge from a cloud. A positive auxiliary voltage impulse, of profile 1/30 mu;s. Of sufficient amplitude to produce corona, has been applied independently at the rod at controlled, variable times during the rise of the slow-front field. The effects of this pulse on the corona produced at the rod by the negative impulse at the plane, on the breakdown voltage of the gap, and on the times to breakdown have been recorded. The general conclusions drawn are that the auxiliary corona has insignificant effects on breakdown when it is applied during the streamer phase of the slow-front corona, but that it influences growth when applied after the leader has been initiated by the ambient field. (Less)
Please use this url to cite or link to this publication:
author
publishing date
type
Contribution to journal
publication status
published
subject
keywords
auxiliary corona, breakdown voltage, corona, downward leader, early streamer emission, impulse corona, lightning protection, negative impulse, negative slow-front impulse voltage, positive auxiliary voltage impulse, probability, slow-front corona, slow-front field, streamers, thundercloud, variable times
in
IEE Proceedings - Science Measurement and Technology
volume
147
issue
5
pages
243 - 248
publisher
Institute of Electrical Engineers
external identifiers
  • scopus:0034269913
ISSN
1359-7094
language
English
LU publication?
no
id
84b98bd1-4b6b-414d-94c4-5cd93702119d (old id 2257163)
alternative location
http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=872676&tag=1
date added to LUP
2012-02-24 14:52:50
date last changed
2017-01-01 07:40:09
@article{84b98bd1-4b6b-414d-94c4-5cd93702119d,
  abstract     = {An 'early streamer emission' (ESE) terminal, for lightning protection, stimulates a burst of streamers from its tip before producing streamers induced by the field of a downward leader, approaching from a thundercloud. It has been claimed to enhance the probability of attachment of a lightning channel to a protection system. Experiments are described in which the performance of a simulated 'early streamer emission' terminal has been characterised. A negative slow-front impulse voltage has been applied to a plane suspended over a vertical rod to simulate the rise of electric field at the tip of the rod, which would be caused by an approaching leader discharge from a cloud. A positive auxiliary voltage impulse, of profile 1/30 mu;s. Of sufficient amplitude to produce corona, has been applied independently at the rod at controlled, variable times during the rise of the slow-front field. The effects of this pulse on the corona produced at the rod by the negative impulse at the plane, on the breakdown voltage of the gap, and on the times to breakdown have been recorded. The general conclusions drawn are that the auxiliary corona has insignificant effects on breakdown when it is applied during the streamer phase of the slow-front corona, but that it influences growth when applied after the leader has been initiated by the ambient field.},
  author       = {Allen, N.L and Evans, J.C},
  issn         = {1359-7094},
  keyword      = {auxiliary corona,breakdown voltage,corona,downward leader,early streamer emission,impulse corona,lightning protection,negative impulse,negative slow-front impulse voltage,positive auxiliary voltage impulse,probability,slow-front corona,slow-front field,streamers,thundercloud,variable times},
  language     = {eng},
  number       = {5},
  pages        = {243--248},
  publisher    = {Institute of Electrical Engineers},
  series       = {IEE Proceedings - Science Measurement and Technology},
  title        = {New investigations of the \'early streamer emission\' principle},
  volume       = {147},
  year         = {2000},
}