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http://dx.doi.org/10.4313/JKEM.2004.17.1.101

Recognition of PD Sources in Air by STFT and Stochastic Parameters  

이강원 (철도기술연구원)
박성희 (충북대학교 전기공학과)
강성화 (충청대학교 산업안전공학과)
임기조 (충북대학교 전기공학과)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.17, no.1, 2004 , pp. 101-106 More about this Journal
Abstract
The phenomenon of PD(Partial Discharge) is accompanied by electromagnetic wave which can be detected by UHF(Ultra High Frequency) antenna. The signals obtaining from UHF antenna are very high rapid pulse and have wide band frequency responses. The distribution of PRPD(Phase Resolved Partial Discharge) which consisted of those pulse train can show distinct characteristics of PD sources. But it is not sufficient to discriminate among PD sources. This paper suggests that the stochastic parameters formed by preprocessing of STFT(Short Time Fourier Transform) are good tools for differentiate from PD sources. The stochastic parameters are CC(Cross Correlation) mean value, CC standard deviation, CC skewness, CC kurtosis.
Keywords
PRPD; UHF; STFT; CC;
Citations & Related Records
Times Cited By KSCI : 3  (Citation Analysis)
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