Title :
Effect of pressboard thickness and wall surface conditions on flow charging of oil [power transformers]
Author :
Poovamma, P.K. ; Dwarakanath, K. ; Moorching, S.N.
Author_Institution :
Central Power Res. Inst., Bangalore, India
Abstract :
A number of power utilities have reported high failures of power transformers due to flow electrification phenomena. Despite extensive work for more than two decades the problem still remains unsolved because of its complexity. The paper presents the outcome of the investigation carried out on several aspects of flow electrification, viz. effect of pressboard composition, thickness, type, surface finish on the charging behaviour of the oil
Keywords :
power transformer insulation; surface topography; transformer oil; triboelectricity; flow charging; flow electrification phenomena; oil charging behaviour; oil insulation; power transformer failure; pressboard composition; pressboard thickness; surface finish; wall surface conditions; Dielectrics and electrical insulation; Oil insulation; Petroleum; Power transformer insulation; Power transformers; Rough surfaces; Surface charging; Surface finishing; Surface roughness; Testing;
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.1996.564654
