Factors influencing the position of the first resonance in the Frequency Response of transformer winding

Article type: Research Article

Authors: Banaszak, Szymon

Affiliations: West Pomeranian University of Technology in Szczecin, ul. Sikorskiego 37, 70-313 Szczecin, Poland. Tel.: +48 601 75 53 90; Fax: +48 91 449 45 57; E-mail: szymon.banaszak@zut.edu.pl

Abstract: The factors that influence the position of the first resonance in the low frequency range of transformer windings Frequency Response are discussed in the paper. It is confirmed by industrial measurements and verified by a computer modeling that the position of the first resonance, measured in a standard end-to-end open test setup, is stable and does not depend on the winding being tested. The frequency of the first resonance depends on capacitance of the HV windings in different phases so the differences between curves visible in the low frequency range of the Frequency Response are not influenced by the tested winding.

Keywords: Frequency Response, RLC model, transformer, transformer windings

DOI: 10.3233/JAE-160057

Journal: International Journal of Applied Electromagnetics and Mechanics, vol. 53, no. 3, pp. 423-434, 2017