Application of very-high-frequency (VHF) method to ceramic insulators

Wong, Khoi Loon 2004, Application of very-high-frequency (VHF) method to ceramic insulators, IEEE transactions on dielectrics and electrical insulation, vol. 11, no. 6, pp. 1057-1064, doi: 10.1109/TDEI.2004.1387829.

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Title Application of very-high-frequency (VHF) method to ceramic insulators
Author(s) Wong, Khoi Loon
Journal name IEEE transactions on dielectrics and electrical insulation
Volume number 11
Issue number 6
Start page 1057
End page 1064
Publisher Institute of Electrical Electonics Engineers
Place of publication Piscataway, N. J.
Publication date 2004-12
ISSN 1070-9878
Summary A VHF method (30-300 MHz) is applied to identify faults and defects in ceramic insulators. Insulators which exhibit internal cracks and fractures are used as test samples. Different artificial conditions are introduced to the test samples according to the IEC 507 standard under wet and dry conditions. Using a cascading signal processing technique and analysis methods such as FFT and fractal analysis, VHF signals acquired by digital scope are processed and analyzed. This study indicates that the fractal dimension can be used as an effective tool to isolate the common faulty conditions found on the ceramic insulators. The results from this study strongly support the prospect of using a VHF method to monitor the physical condition of ceramic insulators.
Language eng
DOI 10.1109/TDEI.2004.1387829
Field of Research 090699 Electrical and Electronic Engineering not elsewhere classified
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2004, IEEE
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