Electricity: conductors and insulators – Insulators – With conductor holding means
Patent
1996-09-27
1998-08-11
Kincaid, Kristine L.
Electricity: conductors and insulators
Insulators
With conductor holding means
H01B 1706
Patent
active
057929963
ABSTRACT:
A non-ceramic insulator for high voltage electrical conductors is designed using a combination of materials to form the outermost surface of the insulator. The non-ceramic insulator includes a support structure and one or more weather sheds. The surface characteristics are chosen to give the insulator good contamination and flashover performance while preventing the aging due to corona activity caused by water drops. Also, the weather shed spacing is varied according to the strength of the local electric field. Old non-ceramic insulators are retrofitted to create a combination of aging resistant and hydrophobic surfaces.
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Dickson and Reynders, "The Effects of Corona on the Surface Properties and Chemical Composition of Silicon Rubber Insulators", Ninth International Symposium on High Voltage Engineering (1995).
Phillips et al., "Consideration of Corona Onset From a Water Drop as a Function of Air Pressure", IEE Proc. Sci. Meas. Technol. 143(2):125-130 (1996).
Phillips et al., "The Effect of Changes in Air Density on Corona Activity From a Single Droplet in Both a Divergent and Uniform Field", 8th International Symposium on High Voltage Engineering (1993).
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Birrell David S.
Childs David J.
Phillips Andrew John
Electric Power Research Institute
Galliani William S.
Kincaid Kristine L.
Waks Joseph
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