Title :
Characterization of thermally accelerated aged oil-paper transformer insulation by interfacial polarization spectra measurements
Author :
Saha, T.K. ; Darveniza, M.
Author_Institution :
Dept. of Electr. & Comput. Eng., Queensland Univ., St. Lucia, Qld., Australia
Abstract :
This paper describes the testing of accelerated aged oil-paper insulation samples to investigate the degradation processes observed in the insulation from aged transformers. Accelerated ageing experiments up to 84 days were performed on paper wrapped insulated conductors at 145°C. Ageing experiments were conducted in the presence of air and of nitrogen. The condition of aged insulation samples was investigated by measurements of interfacial polarization spectra using a DC method
Keywords :
ageing; dielectric polarisation; insulation testing; life testing; paper; power transformer insulation; power transformer testing; transformer oil; 145 C; 84 day; DC method; interfacial polarization spectrum; oil-paper transformer insulation; thermally accelerated ageing; Accelerated aging; Conductors; Degradation; Dielectrics and electrical insulation; Nitrogen; Oil insulation; Petroleum; Polarization; Power transformer insulation; Temperature;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1997., Proceedings of the 5th International Conference on
Conference_Location :
Seoul
Print_ISBN :
0-7803-2651-2
DOI :
10.1109/ICPADM.1997.617636
