DocumentCode
3484892
Title
Distribution transformer impulse test — comments
Author
De Salles, Credson ; Bachega, Renata Jacyszyn ; Martinez, Manuel Luís Barreira
Author_Institution
Fed. Univ. of Itajuba, Itajuba
fYear
2005
fDate
27-30 June 2005
Firstpage
1
Lastpage
4
Abstract
The objective of the impulse tests on distribution transformers is to evaluate the winding insulation performance against lightning. Therefore, the acquired wave shapes must not present failure evidences. The key point on these cases is that some measurement equipments rarely show failure signals, mainly signals due to high frequency oscillation, considering as perfect a failed transformer. This paper discusses some mathematical model and testing results that shows that some high frequency oscillations are related to turn-to-turn failures.
Keywords
power transformer testing; distribution transformer impulse test; high frequency oscillation; winding insulation performance; Automatic testing; Capacitance measurement; Circuit testing; Frequency; Impulse testing; Inductance; Laboratories; Oscilloscopes; Power transformer insulation; Shape; Circuit Modeling; Testing; Transformers; Transient Analysis;
fLanguage
English
Publisher
ieee
Conference_Titel
Power Tech, 2005 IEEE Russia
Conference_Location
St. Petersburg
Print_ISBN
978-5-93208-034-4
Electronic_ISBN
978-5-93208-034-4
Type
conf
DOI
10.1109/PTC.2005.4524588
Filename
4524588
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