Effective methods of assessment of insulation system conditions in power transformers: a view based on practical experience

Author

Sokolov, V. ; Berler, Z. ; Rashkes, V.

Author_Institution

ZTZ-Service, Ukraine

fYear

1999

fDate

6/21/1905 12:00:00 AM

Firstpage

659

Lastpage

667

Abstract

Condition-based monitoring of power transformer insulation should center on the prediction of a substantial drop in the dielectric safety margin under the impact of moisture, oil by-products, contaminating particles, paper insulation aging and partial discharge activity. A functional failure model of power transformer insulation and possible effective methods of the insulation condition assessment are discussed based on practical experience

Keywords

ageing; condition monitoring; failure analysis; insulation testing; paper; partial discharge measurement; power transformer insulation; power transformer testing; safety; transformer oil; composite insulation system defects; condition-based monitoring; contaminating particles; dielectric safety margin; functional failure model; insulation condition assessment; insulation system conditions assessment; moisture; oil by-products; paper insulation aging; partial discharge activity; power transformer insulation; power transformers; Aging; Condition monitoring; Dielectrics and electrical insulation; Moisture; Oil insulation; Partial discharges; Petroleum; Power system modeling; Power transformer insulation; Safety;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation Conference and Electrical Manufacturing & Coil Winding Conference, 1999. Proceedings

Conference_Location

Cincinnati, OH

ISSN

0362-2479

Print_ISBN

0-7803-5757-4

Type

conf

DOI

10.1109/EEIC.1999.826289

Filename

826289