NDLI: Influence of chemical composition on partial discharge characteristics in hexadecane

Content Provider	IEEE Xplore Digital Library
Author	Bolliger, D.A. Boggs, S.A.
Copyright Year	2012
Description	Author affiliation: University of Connecticut, Institute of Materials Science - Electrical Insulation Research Center, 97 North Eagleville Road, Storrs, CT 06269 USA (Bolliger, D.A.; Boggs, S.A.)
Abstract	Partial discharge (PD) characteristics of hexadecane were studied in a needle-plane electrode geometry under AC field with tungsten needles of 10 and 20 μm tip radii. Initial experiments focused on establishing a relationship between chemical impurities in the dielectric fluid and the PD characteristics through addition of chemicals with known electrochemical properties such as Ν,Ν-dimethylaniline (DMA), a low ionization potential compound, and 1,1,1-trichloroethane (TCE), which is highly electronegative. The presence of DMA increases ionization and eases the formation of avalanches relative to pure hexadecane. The addition of TCE at low concentration initially suppresses the overall PD pulse rate for negative discharges and with increasing concentration, the negative streamers tend to become faster and more filamentary; hence, their charge magnitudes become comparable with those of positive streamers.
Starting Page	100
Ending Page	103
File Size	455013
Page Count	4
File Format	PDF
ISBN	9781467312530
ISSN	00849162
e-ISBN	9781467312523
e-ISBN	9781467312516
DOI	10.1109/CEIDP.2012.6378732
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	Partial discharges Needles Additives Discharges (electric) Liquids Dielectrics Dielectric liquids
Content Type	Text
Resource Type	Article

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