Comparison of Known PD Signals With the Developed and Commercial HFCT Sensors

Author

Birlasekaran, S. ; Leong, Weng Hoe

Author_Institution

Queensland Univ. of Technol., Brisbane

Volume

22

Issue

3

fYear

2007

fDate

7/1/2007 12:00:00 AM

Firstpage

1581

Lastpage

1590

Abstract

Increasing need of cost effective identical sensors for partial discharge (PD) location prompted us to take up this research study. Four high-frequency current transformers (HFCT) were assembled and its performances with a used commercial sensor were compared with the known type of PD signals. In this paper, the responses due to surface, oil corona and air corona are analyzed. PD occurrence in 20 ms period and the shape of single PD with more sampled data points are characterized using seven techniques. The study indicates that HFCT with biflar winding is more sensitive in identifying different types of known PD. The number of turns and gauge of the used wire in HFCT play a role in increasing the sensitivity of PD detection.

Keywords

condition monitoring; corona; current transformers; high-frequency transformers; partial discharge measurement; sensors; HFCT sensors; HV apparatus; Weibull distribution; air corona; biflar winding; cluster analysis; condition monitoring; high-frequency current transformers; oil corona; partial discharge location; partial discharge signals; phase distribution; signal processing; time-frequency transformation; Assembly; Corona; Costs; Current transformers; Partial discharges; Petroleum; Sensor phenomena and characterization; Shape; Surface discharges; Wire; Cluster analysis; HFCT; condition monitoring; partial discharge; phase distribution; signal processing; time-frequency transformation; wave shape of single PD; weibull distribution;

fLanguage

English

Journal_Title

Power Delivery, IEEE Transactions on

Publisher

ieee

ISSN

0885-8977

Type

jour

DOI

10.1109/TPWRD.2007.899795

Filename

4265652