Effect of energisation on flow electrification characteristics of transformer oil

Author

Poovamma, P.K. ; Moorching, S.N.

Author_Institution

Central Power Res. Inst., Bangalore, India

Volume

1

fYear

1998

fDate

25-28 Oct 1998

Firstpage

199

Abstract

The objective of the present work is to understand the effects of AC and DC energisation on the flow characteristics of paraffinic based transformer oil under some of the simulated practical conditions. The Couette device which simulates the duct flow condition in the transformer was employed. The variation of the charging current, voltage buildup and accumulated charge under energisation was evaluated. The results of the investigation reveal that the above parameters increase with flow velocity and energisation. However, it is observed that with DC energisation the polarity of the parameters evaluated depended on the polarity of the applied voltage

Keywords

Couette flow; electrohydrodynamics; pipe flow; static electrification; transformer oil; AC energisation; Couette device; DC energisation; duct flow; flow electrification; paraffin; transformer oil; Collision mitigation; Electrodes; Fluid flow measurement; Oil insulation; Petroleum; Power transformer insulation; Rough surfaces; Surface finishing; Surface roughness; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 1998. Annual Report. Conference on

Conference_Location

Atlanta, GA

Print_ISBN

0-7803-5035-9

Type

conf

DOI

10.1109/CEIDP.1998.733919

Filename

733919