Frequency response analysis to investigate deformation of transformer winding

Yousof, M. Fairouz M., Ekanayake, Chandima and Saha, Tapan K. (2015) Frequency response analysis to investigate deformation of transformer winding. IEEE Transactions on Dielectrics and Electrical Insulation, 22 4: 2359-2367. doi:10.1109/TDEI.2015.004750


Author Yousof, M. Fairouz M.
Ekanayake, Chandima
Saha, Tapan K.
Title Frequency response analysis to investigate deformation of transformer winding
Journal name IEEE Transactions on Dielectrics and Electrical Insulation   Check publisher's open access policy
ISSN 1070-9878
1558-4135
Publication date 2015-08
Sub-type Article (original research)
DOI 10.1109/TDEI.2015.004750
Open Access Status Not Open Access
Volume 22
Issue 4
Start page 2359
End page 2367
Total pages 9
Place of publication Piscataway, NJ, United States
Publisher Institute of Electrical and Electronics Engineers
Language eng
Abstract This paper discusses the application of Nyquist plot and two statistical indicators to analyze the frequency response of power transformers. Five cases are presented based on both simulations and measurements. These include two types of winding deformation, namely tilting and bending of conductors. Initially, damage is simulated for five degrees of severity and analyzed using two statistical indicators. The indicators are compared for their performance in terms of evaluating the severity of damage. New findings from this comparison are presented. Additionally, the benchmark limit for one of the indicators is also assessed on all cases. Finally, a methodology is proposed to estimate the severity of damage from two frequency responses using the Nyquist plot. This method is tested on three different windings.
Keyword Frequency response
Modeling
Transfer functions
Transformers
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
School of Information Technology and Electrical Engineering Publications
 
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