DocumentCode :
1043335
Title :
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
Link To Document :
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