Title :
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
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;
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
DOI :
10.1109/CEIDP.1996.564610
