Experience on partial discharge monitoring of power transformers

Author

Vellucci, E. ; Cavallini, A. ; Montanari, G.C. ; Fabiani, D.

Author_Institution

Rete Elettrica Nazionale, Terna SpA, Rome, Italy

fYear

2004

fDate

19-22 Sept. 2004

Firstpage

174

Lastpage

177

Abstract

Partial discharge (PD) monitoring of high voltage and extra high voltage transformers is a tool that may provide timely and complementary information on transformer state with respect to other diagnostic techniques, such as dissolved gas analysis. Identification of source(s) generating PD and evaluation of the relevant time behaviour are, however, fundamental requisites in order to evaluate and plan maintenance actions. For this purpose, monitoring PD activity over a selected time span may be the appropriate procedure. In this paper, results obtained through partial discharge monitoring of a self-transformer are presented, showing the feasibility of PD identification and noise rejection.

Keywords

condition monitoring; fault diagnosis; partial discharge measurement; potential transformers; power transformer testing; preventive maintenance; PD generation; PD identification; PD monitoring; diagnostic technique; dissolved gas analysis; extra high voltage transformer; high voltage transformer; noise rejection; partial discharge monitoring; plan maintenance action; self-transformer monitoring; time behaviour; Current transformers; Dissolved gas analysis; Information analysis; Insulators; Monitoring; Oil insulation; Partial discharges; Power transformer insulation; Power transformers; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation, 2004. Conference Record of the 2004 IEEE International Symposium on

ISSN

1089-084X

Print_ISBN

0-7803-8447-4

Type

conf

DOI

10.1109/ELINSL.2004.1380506

Filename

1380506