Comparison of transfer functions using estimated rational functions to detect winding mechanical faults in transformers

• Autorzy: Bigdeli M. , Vakilian M. , Rahimpour E.
• Języki publikacji: EN

Abstrakty

EN

As it is found in the related published literatures, the transfer function (TF) evaluation method is the most feasible method for detection of winding mechanical faults in transformers. Therefore, investigation of an accurate method for evaluation of the TFs is very important. This paper presents three new indices to compare the transformer TFs and consequently to detect the winding mechanical faults. These indices are based on estimated rational functions. To develop the method, the necessary measurements are carried out on a 1.3 MVA transformer winding, under intact condition, as well as different fault conditions (axial displacement of winding). The obtained results demonstrate the high potential of proposed method in comparison with two other well-known indices. Additionally, two important methods for describing TFs by rational functions are studied and compared in this paper.

Słowa kluczowe

EN

transformer; transfer function; fault detection; axial displacement; rational function

PL

transformator; funkcja przenoszenia; osiowe przesunięcie; funkcja wymierna

• Wydawca: Polish Academy of Sciences, Committee on Electrical Engineering
• Czasopismo: Archives of Electrical Engineering
• Rocznik: 2012
• Tom: Vol. 61, nr 1
• Strony: 85--99
• Opis fizyczny: Bibliogr. 15 poz., tab., rys.

Twórcy

autor

Bigdeli M.

autor

Vakilian M.

autor

Rahimpour E.

• Departament of Electrical Engineering, Zanjan Branch Islamic Azad University, Zanjan, Iran,

Bibliografia

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