Influence of thermal aging process on dielectric response of oil-paper insulation.

• Autorzy: Gielniak J. , Graczkowski A. , Gubański S. , Moranda H. , Mościcka-Grzesiak H. , Walczak K.
• Konferencja: APTADM 2007, III International Conference on Advances in Processing Testing and Application of Dielectric Materials., September, 26-28, 2007 Wrocław, Poland
• Języki publikacji: EN

Abstrakty

EN

This paper presents results of dielectric response measurements in frequency domain obtained at different temperature for oil impregnated paper samples containing different amount of moisture. Brief description of the sample preparation and thermal aging are also included. Dielectric responses of unaged and thermally aged paper samples were investigated at different temperature and the obtained results were used for defining respective master curves and activation energies. Discrepancies of the results from similar samples are also presented. Finally, statistical spread of the data from similar samples was presented with error bars and discussed about their influence on distinguishing the dielectric response of paper samples having different moisture intakes.

Słowa kluczowe

EN

dielectric response; oil-paper insulation; thermal aging

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Prace Naukowe Instytutu Podstaw Elektrotechniki i Elektrotechnologii Politechniki Wrocławskiej. Konferencje
• Rocznik: 2007
• Tom: Vol. 46, nr 19
• Strony: 113--117
• Opis fizyczny: Bibliogr. 5 poz.

Twórcy

autor

Gielniak J.

autor

Graczkowski A.

autor

Gubański S.

autor

Moranda H.

autor

Mościcka-Grzesiak H.

autor

Walczak K.

• Poznan University of Technology, Poland

Bibliografia

• [1] Gielniak J., Morańda H., Neumann S., Ossowski M, Przybyłek P., Walczak K., Mościcka-Grzesiak H., Warunki wystąpienia .”bubble effect” w transformatorze o izolacji papierowo-olejowej. Konferencja naukowo-techniczna „Transformatory w eksploatacji", Kołobrzeg-Dźwirzyno, 20-22.04.2005, Energetyka, Zeszyt tematyczny nr VI, ss. 120-122.
• [2] Lew And L., Understanding water in transformer systems, NETA World Magazine, Spring, 2002.
• [3] Słowikowski J., Zawilgocenie transformatora; przyczyny, skutki, współczesne kryteria oceny, International Conference on Power Transformers -Transformer 03, Pieczyska, 18-21 maja 2003.
• [4] Gubański S.M., Blennow J., Karlsson L., Feser K., Tenbohlen S., Neumann C, Moscicka-Grzesiak H„ Filipowski A., Tatarski L., Reliable Diagnostics of Transformer Insulation for Safety Assurence of Power Transmission System. REDIATOOL — a European Research Project, CIGRE Session, Paris 2006.
• [5] Gjaerde A. C, Lundgaard L., Ildstad E., Effect of temperature and moisture on the dielectric properties of oil-impregnated cellulose, 9th International Symposium on High Voltage Engineering, Graz 1995.