Impact of moisture and ageing on the dielectric response of transformer insulation

Author

Jadav, Raj B. ; Ekanayake, Chandima ; Saha, Tapan K.

Author_Institution

Sch. of ITEE, Univ. of Queensland, Brisbane, QLD, Australia

fYear

2012

fDate

26-29 Sept. 2012

Firstpage

1

Lastpage

6

Abstract

Moisture accelerates the ageing process in the oil-paper insulation of the transformer. In order to understand an influence of moisture on the ageing process of transformer insulation, ageing experiments are carried out on oil-impregnated pressboard sample of different moisture contents, and influence of moisture and ageing on the dielectric response is studied. In this paper, variation of PDC and FDS responses of oil-impregnated pressboard samples with ageing is discussed. Further to that, change in DP value of pressboard sample with ageing is presented for different ageing periods.

Keywords

ageing; moisture; paper; transformer oil; FDS response variation; PDC response variation; ageing impact process; dielectric response; frequency domain spectroscopy; moisture impact acceleration; oil-impregnated pressboard sample; oil-paper insulation; polarisation-depolarisation current; transformer insulation; Aging; Current measurement; Moisture; Oil insulation; Power transformer insulation; Temperature measurement; Ageing; DP; FDS; Moisture; PDC;

fLanguage

English

Publisher

ieee

Conference_Titel

Universities Power Engineering Conference (AUPEC), 2012 22nd Australasian

Conference_Location

Bali

Print_ISBN

978-1-4673-2933-0

Type

conf

Filename

6360248