Studies on static charging behaviour of transformer oils

Author

Rajaraman, R. ; Mukherji, S. ; Suryanarayana, D. ; Adikesavulu, A.K. ; Murthy, T.S.R. ; Agashe, P.G.

Author_Institution

Bharat Heavy Electricals Ltd., Hyderabad, India

fYear

1993

fDate

17-20 Oct 1993

Firstpage

402

Lastpage

407

Abstract

Investigations on paraffinic oils are presented. Charge level measurements on a few paraffinic-based oils and a typical naphthenic-based oil are discussed. Most paraffinic oils were found to have high charge levels, which was attributed to higher ionic contamination and dominant chemical structure. While a charge suppressor reduced the charge levels of high charging oils, it had an adverse effect on other dielectric properties. However, its presence retarded ageing. Paraffinic oils from service transformers showed a significant deterioration in these properties compared to naphthenic oils

Keywords

static electrification; transformer oil; ageing; charge suppressor; chemical structure; dielectric properties; high charge levels; ionic contamination; naphthenic-based oil; paraffinic oils; static charging behaviour; transformer oils; Charge measurement; Conductivity; Current measurement; Density measurement; Dielectric loss measurement; Dielectric losses; Electrical capacitance tomography; Electrostatic measurements; Oil insulation; Petroleum;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 1993. Annual Report., Conference on

Conference_Location

Pocono Manor, PA

Print_ISBN

0-7803-0966-9

Type

conf

DOI

10.1109/CEIDP.1993.378939

Filename

378939