Leakage Current Activity on Glass-Type Insulators of Overhead Transmission Lines in the Northeast Region of Brazil

Author

Oliveira, Sérgio Campello ; Fontana, Eduardo ; do Monte de Melo Cavalcanti, F.J.

Author_Institution

Dep. de Sist. Computacionais, Univ. de Pernambuco, Recife

Volume

24

Issue

2

fYear

2009

fDate

4/1/2009 12:00:00 AM

Firstpage

822

Lastpage

827

Abstract

This paper describes a study of the leakage current activity on glass-type insulators of high-voltage transmission lines over a three-month period. Three pairs of sensor systems were installed, one on a 500-kV field tower and the other two on 230-kV and 500-kV substation towers, all in the northeast region of Brazil. The locations were chosen due to their particular environment characteristics and the previous knowledge of pollution severity in these locations. The correlation of the leakage current attributes with in situ humidity records, insulator positions on the tower, and seasonality are discussed.

Keywords

glass; insulator contamination; leakage currents; power overhead lines; Brazil; glass-type insulators; high-voltage transmission lines; leakage current activity; overhead transmission lines; pollution severity; voltage 230 kV; voltage 500 kV; Flashover; insulators; leakage current; optical-fiber transducers; power transmission lines;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2008.2002872

Filename

4801585