Dielectric spectroscopy measurements on oil impregnated paper / pressboard samples

• Autorzy: Ekanayake C. , Graczkowski A. , Walczak K. , Gubanski S. M.
• Konferencja: II International Conference on Advances in Processing, Testing and Application of Dielectric Materials, 15-17 September, Wrocław 2004
• Języki publikacji: EN

Abstrakty

EN

Dielectric response analyses of oil-paper/pressboard insulation in power equipment have been introduced for condition monitoring. This paper presents results of a laboratory study where dielectric spectroscopy measurements in frequency domain were performed on oil impregnated pressboard samples containing different amount of moisture (0.6% - 4%). Such data are necessary for correct interpretation of the diagnostic measurements. The measurements were earned out in the frequency range of 0.1 mHz - 1 MHz at temperatures between 20 °C and 80 °C. The measured dielectric response data were used for obtaining information on the change of activation energy and dc conductivity of pressboard with moisture content. The responses obtained were used to derive master curves. Furthermore, the influences of the non-linear behaviour and oil layers on the total dielectric response were discussed.

Słowa kluczowe

EN

dielectric response; moisture; conductivity; oil paper/pressboard insulation; Karl Fischer titration; activation energy; master curve

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Prace Naukowe Instytutu Podstaw Elektrotechniki i Elektrotechnologii Politechniki Wrocławskiej. Konferencje
• Rocznik: 2004
• Tom: Vol. 40, nr 15
• Strony: 113--120
• Opis fizyczny: Bibliogr. 18 poz., rys., tab.

Twórcy

autor

Ekanayake C.

• Chalmers University of technology, Sweden

autor

Graczkowski A.

• Poznan University of Technology, Poland

autor

Walczak K.

• Poznan University of Technology, Poland

autor

Gubanski S. M.

• Chalmers University of technology, Sweden

Bibliografia

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