Studies on the effect of ageing on the dielectric strength of transformer oil under oscillatory impulse voltages

Author

Sarathi, R. ; Sirse, Mohan Narayanarao

Author_Institution

Dept. of Electr. Eng., Indian Inst. of Technol., Madras, India

Volume

2

fYear

1997

fDate

19-22, Oct 1997

Firstpage

680

Abstract

In this paper, the influence of thermal ageing on the breakdown characteristics of transformer oil with the needle-plane configuration under oscillatory impulse voltages (unidirectional, sin/cos-bidirectional) of different frequencies and dampings have been studied. For the purpose of comparison, the results obtained under similar configuration have been obtained under AC, lightning and switching impulse voltages

Keywords

ageing; electric breakdown; electric strength; insulation testing; lightning; power transformer insulation; power transformer testing; transformer oil; AC impulse voltages; ageing; breakdown characteristics; dampings; dielectric strength; lightning impulse voltages; needle-plane configuration; oscillatory impulse voltages; switching impulse voltages; transformer oil; Aging; Dielectric breakdown; Dielectrics and electrical insulation; Frequency; Oil insulation; Petroleum; Power transformer insulation; Power transformers; Switches; Voltage-controlled oscillators;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 1997. IEEE 1997 Annual Report., Conference on

Conference_Location

Minneapolis, MN

Print_ISBN

0-7803-3851-0

Type

conf

DOI

10.1109/CEIDP.1997.641166

Filename

641166