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Wydawnictwo: Academic Journals Poznan University of Technology

Numer: 73/2013 Str: 107

Autorzy: Szymon Banaszak, Konstanty M. Gawrylczyk

Tytuł: RLC - models for computer modeling of transformers' windings frequency response

Streszczenie: The diagnostics of power transformers is a very fast developing branch, due to increasing average age of assets and changes in asset management strategies, nowadays companies introduce asset management based on technical condition. One of important methods used for diagnostics of a transformer’s active part is Frequency Response Analysis (FRA). It allows determination of mechanical condition of windings, their displacements, deformations and electric faults, as well as some problems with internal leads and connections, core and bushings. For the aim of windings impedance modeling the RLC models are applied. The idea of lumped parameters models was presented in [6]. The new universal model basing on circuit solution is developed in this paper. Lumped parameters used are calculated with finite element method and Maxwell package. The examples of models created for simple windings were compared to real measurements.

Słowa kluczowe: diagnostic of power transformers, RLC model of transformer, Frequency Response Analysis (FRA)