DocumentCode :
3497173
Title :
Hierarchical cluster analysis of broadband measured partial discharges as part of a modular structured monitoring system for transformers
Author :
Werle, P. ; Borsi, H. ; Gockenbach, E.
Author_Institution :
Schering Inst. of High Voltage Tech. & Eng., Hannover Univ., Germany
Volume :
5
fYear :
1999
fDate :
1999
Firstpage :
29
Abstract :
In this article investigations on hierarchical cluster analysis methods concerning their ability to evaluate broadband measured partial discharges (PD) are presented. Therefore different cluster algorithms were tested with various data measured in the laboratory on a special modified distribution transformer and with measurements from a power transformer on-site. A comparison of the results obtained by different cluster analyses shows that these methods are suitable for a location of PD sources inside transformers as well as for a separation of these partial discharges from pulse shaped noises, e.g. corona impulses. In order to achieve a higher efficiency and performance in evaluating PD signals cluster algorithms are combined with additional pattern recognition methods in a modular structured monitoring system for transformers
Keywords :
power transformer testing; PD signals cluster algorithms; PD sources location; broadband measured partial discharges; cluster algorithms; corona impulses; fault location; hierarchical cluster analysis; higher efficiency; modified distribution transformer; modular structured monitoring system; on-site power transformer measurements; pattern recognition methods; pulse shaped noises; structured monitoring system; transformers;
fLanguage :
English
Publisher :
iet
Conference_Titel :
High Voltage Engineering, 1999. Eleventh International Symposium on (Conf. Publ. No. 467)
Conference_Location :
London
ISSN :
0537-9989
Print_ISBN :
0-85296-719-5
Type :
conf
DOI :
10.1049/cp:19990878
Filename :
818230
Link To Document :
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