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DETECTION OF CORONA AND DRY-BAND ARC DISCHARGES ON NANO-COMPOSITE EPOXY INSULATORS USING RF SENSING
Author(s) -
S. C. Fernando,
Alan K. L. Wong,
Wayne S. T. Rowe
Publication year - 2012
Publication title -
electromagnetic waves
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 89
eISSN - 1559-8985
pISSN - 1070-4698
DOI - 10.2528/pier12011201
Subject(s) - composite number , materials science , epoxy , nano , corona (planetary geology) , arc (geometry) , electric arc , composite material , corona discharge , optoelectronics , physics , electrode , electrical engineering , engineering , voltage , astrobiology , mechanical engineering , quantum mechanics , venus
RF radiation due to corona and dry-band arc discharges have been observed using an antenna. Variations in radiated energy were observed due to change in the distance between two water droplets, the contact angle and the volume of the droplets, and the condition of the insulator surface. Changes in the frequency spectrum within the 800MHz{900MHz and 1.25GHz{1.4GHz frequency bands have been used to identify the transition from corona discharge to dry- band arc discharge. The 800MHz{900MHz emission band has also been used to monitor the condition of the insulator. These flndings highlight the potential for RF sensing in the identiflcation of partial discharges and insulator condition monitoring.

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