Open AccessA new technique for separation of partial discharge sources and electromagnetic noise in radiofrequency measurements using energy ratios of different antennas
Author(s) -
ArdilaRey Jorge A.,
CerdaLuna Matias,
RozasValderrama Rodrigo,
Albuquerque de Castro Bruno,
Andreoli André Luiz,
Cevallos Benjamin
Publication year - 2021
Publication title -
high voltage
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.732
H-Index - 20
ISSN - 2397-7264
DOI - 10.1049/hve2.12065
Subject(s) - ultra high frequency , partial discharge , noise (video) , limit (mathematics) , acoustics , separation (statistics) , energy (signal processing) , frequency band , computer science , electronic engineering , physics , antenna (radio) , voltage , electrical engineering , telecommunications , engineering , mathematics , mathematical analysis , quantum mechanics , artificial intelligence , machine learning , image (mathematics)
One of the main tools for monitoring the condition of high voltage equipment is the measurement of partial discharges (PD). The electromagnetic (EM) radiation originated from this degradation phenomenon can be captured by various types of ultra‐high frequency (UHF) antennas carefully designed and optimised for specific frequency bands. However, the presence of environmental noise may limit the use of this technique. Different types of monopole antennas normally used in UHF PD measurement have been evaluated in order to validate the performance of a novel separation technique of EM sources. Accordingly, a new separation technique based on the energy ratio of the captured signals was developed, considering noise interferences. The results revealed that the new technique allows an adequate separation, even when three sources act simultaneously.