Assessment of oil impregnated paper insulated transformers using recovery voltage measurements

Author

Krivda, A. ; Russell, Gary

Author_Institution

Powerlink, Qld., Australia

fYear

1998

fDate

22-25 Jun 1998

Firstpage

64

Lastpage

68

Abstract

The main objective of this study was to assess the advantages of Direct Current Recovery Voltage Measurements over more conventional techniques for condition monitoring of oil impregnated paper insulated power and instrument transformers. This paper focuses attention on the advantages and precautions that must be observed when applying this technique in a realistic environment. The significance of capacitively graded high voltage insulation and the influence of environmental factors such as humidity and wind on the repeatability of recovery voltage measurements are also discussed

Keywords

condition monitoring; dielectric measurement; impregnated insulation; instrument transformers; insulation testing; paper; power transformer insulation; power transformer testing; transformer oil; voltage measurement; DC recovery voltage measurement; capacitively graded high voltage insulation; condition monitoring; environmental factor; humidity; instrument transformer; oil impregnated paper; power transformer; transformer insulation; wind; Condition monitoring; Instrument transformers; Insulation testing; Oil insulation; Petroleum; Polarization; Power transformer insulation; Power transformers; System testing; Voltage measurement;

fLanguage

English

Publisher

ieee

Conference_Titel

Conduction and Breakdown in Solid Dielectrics, 1998. ICSD '98. Proceedings of the 1998 IEEE 6th International Conference on

Conference_Location

Vasteras

Print_ISBN

0-7803-4237-2

Type

conf

DOI

10.1109/ICSD.1998.709228

Filename

709228