NDLI: Study on aging characteristics of oil-immersed paper and polymer material based on dielectric loss

Content Provider	IEEE Xplore Digital Library
Author	Wei Wang Kai Yang Caipeng Yue Shengke Chen Dongxin He
Copyright Year	2012
Description	Author affiliation: Liaocheng Electric Power Bureau, Shandong Province, Liaocheng, 252000, China (Caipeng Yue) \|\| Beijing Key Laboratory of High Voltage & EMC, State Key Laboratory of Alternate Electrical Power System with Renewable, Energy Sources, North China Electric Power University, Beijing, 102206, China (Wei Wang; Kai Yang; Shengke Chen; Dongxin He)
Abstract	The dielectric constant and the high temperature resistant performance of solid insulation used in oil-immersed transformer would limit the capacity and size of an oil-immersed transformer. In this paper, kraft paper and polycarbonate has been aged under 90 °C, 110 °C and 130 °C up to 300 days, simultaneously an electric pre-stressing of 3kV/mm is performed. The dielectric spectroscopy (here refer to the change tendency of tanδ along with the change of frequency and temperature) was investigated at different aging stages. The results show that the tanδ of polycarbonate are less than that of insulating paper/board under different frequency and temperature; For kraft paper, dielectric loss tanδ from $10^{−2}$ Hz to $10^{0}$ Hz and dielectric loss tanδ versus temperature both can be as indicators for the degradation evaluation of insulation, but for polycarbonate only dielectric loss tanδ from $10^{−2}$ Hz to $10^{0}$ Hz can be as indicators for the degradation evaluation of insulation. Meanwhile, the aging temperature is higher, the tanδ is greater.
Starting Page	882
Ending Page	885
File Size	427741
Page Count	4
File Format	PDF
ISBN	9781467312530
ISSN	00849162
e-ISBN	9781467312523
e-ISBN	9781467312516
DOI	10.1109/CEIDP.2012.6378922
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-10-14
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Aging Temperature Dielectrics Materials Power transformer insulation Oil insulation
Content Type	Text
Resource Type	Article

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