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Wyszukujesz frazę "Frequency Response Analysis" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
TLM-method for Computer Modeling of Transformers’ Windings Frequency Response
Autorzy:
Banaszak, S.
Gawrylczyk, K. M.
Powiązania:
https://bibliotekanauki.pl/articles/97469.pdf
Data publikacji:
2012
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
TLM
frequency response analysis (FRA)
FRA
transformer windings
Opis:
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 transmission-line models are applied. The idea of TLM was presented in [1]. While the length of transformer wires is comparable to wave length at high frequency, such approach is reasonable. The paper presents examples of models created for simple windings.
Źródło:
Computer Applications in Electrical Engineering; 2012, 10; 137-145
1508-4248
Pojawia się w:
Computer Applications in Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
TLM-method for computer modeling of transformers’ windings frequency response
Autorzy:
Banaszak, S.
Gawrylczyk, K. M.
Powiązania:
https://bibliotekanauki.pl/articles/376947.pdf
Data publikacji:
2012
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
power transformers
FRA
TLM
frequency response analysis (FRA)
Opis:
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 transmission-line models are applied. The idea of TLM was presented in [1], While the length of transformer wires is comparable to wave length at high frequency, such approach is reasonable. The paper presents examples of models created for simple windings.
Źródło:
Poznan University of Technology Academic Journals. Electrical Engineering; 2012, 69; 41-47
1897-0737
Pojawia się w:
Poznan University of Technology Academic Journals. Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
RLC-models for computer modeling of transformers’ windings frequency response
Autorzy:
Banaszak, S.
Gawrylczyk, K. M.
Powiązania:
https://bibliotekanauki.pl/articles/376937.pdf
Data publikacji:
2013
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
power transformers
FRA
frequency response analysis (FRA)
RLC models
Opis:
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.
Źródło:
Poznan University of Technology Academic Journals. Electrical Engineering; 2013, 73; 107-113
1897-0737
Pojawia się w:
Poznan University of Technology Academic Journals. Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wybrane czynniki wpływające na odpowiedź częstotliwościową autotransformatora energetycznego
Factors influencing the frequency response of power autotransformer
Autorzy:
Banaszak, S.
Powiązania:
https://bibliotekanauki.pl/articles/153885.pdf
Data publikacji:
2011
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
analiza odpowiedzi częstotliwościowej
FRA
autotransformator
diagnostyka
odkształcenie uzwojeń
frequency response analysis (FRA)
autotransformer
diagnostics
windings deformation
Opis:
Artykuł omawia wyniki badań deformacyjnych przeprowadzonych na autotransformatorze RTdxP 160 MVA. Badania polegały na kontrolowanym wprowadzaniu zmian w strukturę transformatora i rejestrowanie ich wpływu na pomiary odpowiedzi częstotliwościowej (FRA). Zbadano w ten sposób wpływ rodzaju medium izolacyjnego oraz deformacje w uzwojeniach regulacyjnym i wysokiego napięcia (szeregowym). Uzyskane wyniki umożliwiły wyciągnięcie wniosków dotyczących poprawnej interpretacji i analizy krzywych FRA.
Results of deformational tests performed on RTdxP 160 MVA autotransformer are described in the paper. It was based on the infliction of controlled changes in transformer's structure, and changes in measurements of FRA curves (Frequency Response Analysis) were detected. The first issue analyzed in the experiment was change of insulating liquid. It gave clear results - a shift of transformer response along frequency, resulting from permittivity changes of insulating medium. Following tests showed influence of rough deformations of regulation windings, as well as, influence of small deformations in series winding (HV). Part of the HV winding was deformed axially and radially. Also some short-circuits between windings were simulated. On the base of obtained results it was possible to draw conclusions concerning correct interpretation and analysis of FRA results. One of important conclusions is that small changes in winding geometry or local short-circuits can be difficult to detect in case of geometrically large transformers.
Źródło:
Pomiary Automatyka Kontrola; 2011, R. 57, nr 4, 4; 364-367
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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