High Frequency Oscillation Modes in a Transformer winding Disc
2010 (English)In: Studies in Applied Electromagnetics and Mechanics, ISSN 1879-8322, Vol. 34, 329-337 p.Article in journal (Refereed) Published
The high frequency resonant behavior of a winding disc is studied by measurements on a test setup, and by computer simulation of lumped-element circuit models. It is shown that in order to achieve satisfactory agreement between both, every turn must be described by several segments in the model. The reason is that the high frequency end of the spectrum is dominated by “azimuthal” resonance modes which are not present in models with lower resolution. The intermediate frequency range is characterized by “radial” resonances, present even in lower resolution models. The different physical character and properties of these modes are discussed. Our findings provide new insight into the interpretation of frequency response measurements on power transformers.
Place, publisher, year, edition, pages
Netherlands: IOS Press , 2010. Vol. 34, 329-337 p.
Frequency Response Analysis, transformer winding disc
Other Electrical Engineering, Electronic Engineering, Information Engineering
IdentifiersURN: urn:nbn:se:kth:diva-45471DOI: 10.3233/978-1-60750-604-1-329ScopusID: 2-s2.0-84865407383OAI: oai:DiVA.org:kth-45471DiVA: diva2:452414
QC 201110312011-10-312011-10-292011-11-02Bibliographically approved