Study of discharge in air from the tip of an icicle

Electric discharge between the tip of an icicle and a plane electrode has been studied because of its relevance to the flashover of high voltage ice-covered insulators. A photomultiplier was used to scan the high voltage rod simultaneously with current measurement technique. The basic properties of...

Full description

Saved in:
Bibliographic Details
Published in:IEEE transactions on dielectrics and electrical insulation 2008-06, Vol.15 (3), p.730-740
Main Authors: Fofana, I., Farzaneh, M., Hemmatjou, H., Volat, C.
Format: Article
Language:English
Subjects:
Breakdown
Breakdown voltage
Current measurement
Dielectrics and electrical insulation
Electric discharges
Electric potential
Electrodes
Flashover
High voltages
Insulators
Leakage current
Photomultipliers
Propagation velocity
Velocity measurement
Voltage
Voltage measurement
Water
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Electric discharge between the tip of an icicle and a plane electrode has been studied because of its relevance to the flashover of high voltage ice-covered insulators. A photomultiplier was used to scan the high voltage rod simultaneously with current measurement technique. The basic properties of streamers, namely the onset voltage, leakage current, mean propagation velocity and breakdown voltage, have been measured and compared with propagation from a metal rod as a reference. The effects of several experimental parameters such as freezing water conductivity, surrounding temperature and air gap length on the discharge characteristics have been examined. Possible mechanisms, which control discharges from ice points, have also been discussed and empirical relationships to predict breakdown voltage have been derived.
ISSN:1070-9878
1558-4135
DOI:10.1109/TDEI.2008.4543110