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

journal contribution
posted on 2004-12-01, 00:00 authored by K Wong
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.

History

Journal

IEEE transactions on dielectrics and electrical insulation

Volume

11

Issue

6

Pagination

1057 - 1064

Publisher

Institute of Electrical Electonics Engineers

Location

Piscataway, N. J.

ISSN

1070-9878

eISSN

1558-4135

Language

eng

Publication classification

C1 Refereed article in a scholarly journal

Copyright notice

2004, IEEE

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