NDLI: Hydrophobicity evaluation of polymer insulator using surface discharge characteristics

Content Provider	IEEE Xplore Digital Library
Author	Du, B.X. Cheng, X.X. Jie Li Ma, Z.L.
Copyright Year	2011
Description	Author affiliation: Dept. of Electr. Eng., Tianjin Univ., Tianjin, China (Du, B.X.; Cheng, X.X.; Jie Li; Ma, Z.L.)
Abstract	With the spread application of polymer insulators in UHV and EHV transmission lines, the decrease of hydrophobicity becomes one of prominent factors to affect the stability and reliability of power system. Recently, dynamic dropping test (DDT) has been employed to hydrophobicity evaluation, which has proven the occurrence of different discharge phenomena in relation to the hydrophobicity variation. However, limited analysis of discharge characteristics is carried out for the hydrophobicity evaluation by using DDT. In this paper, based on DDT method, the characterization of surface discharges, including the discharge magnitude, pulse number, adjacent discharge magnitude and adjacent time interval, have been analyzed to for the hydrophobicity evaluation. It is found that with the decrease of hydrophobicity, these characteristics of surface discharges apparently show the increasing tendency. The results obtained can indicate that the characterization of surface discharge in DDT method can be utilized to the hydrophobicity evaluation.
Starting Page	462
Ending Page	465
File Size	1497276
Page Count	4
File Format	PDF
ISBN	9784886860743
e-ISBN	9784886860743
DOI	10.1109/ISEIM.2011.6826313
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-09-06
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	The Institute of Electrical Engineers, Japan
Subject Keyword	Discharges (electric) Surface discharges Insulators Electrodes Surface contamination Polymers Surface morphology hydrophobicity evaluation polymer insulator corona degradation dynamic dropping test Surface discharge
Content Type	Text
Resource Type	Article

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