The development of electrical trees in epoxy insulation-partial discharge pulse characterization by ultra wideband techniques

Author

Lopez-Roldan, J. ; Braun, J.M. ; Densley, J. ; Fujimoto, N.

Author_Institution

Ontario Hydro Technol., Toronto, Ont., Canada

Volume

2

fYear

1996

fDate

20-23 Oct 1996

Firstpage

754

Abstract

The development of electrical trees in unfilled epoxy insulation has been studied. Trees were observed visually with a long-range microscope with simultaneous recording of partial discharge characteristics. Partial discharges measurements were performed using ultrawideband techniques in order to observe variations in partial discharge pulse shape. The results indicate distinct regions of tree growth, each with its own characteristics

Keywords

ageing; epoxy insulation; insulation testing; partial discharges; trees (electrical); aging process; electrical trees; epoxy insulation; long-range microscope; needle/plane congfiguration; partial discharge pulse characterization; partial discharge pulse shape; simultaneous recording; tree growth regions; ultra wideband techniques; Dielectrics and electrical insulation; Disk recording; Microscopy; Partial discharge measurement; Partial discharges; Performance evaluation; Pulse measurements; Shape measurement; Trees - insulation; Ultra wideband technology;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 1996., IEEE 1996 Annual Report of the Conference on

Conference_Location

Millbrae, CA

Print_ISBN

0-7803-3580-5

Type

conf

DOI

10.1109/CEIDP.1996.564610

Filename

564610