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http://dx.doi.org/10.4313/JKEM.2005.18.5.484

Some Considerations on the On-site Applicability of PSA(Pulse Sequence Analysis) as a Partial Discharge Analysis Method  

Kim, Jeong-Tae (대진대학교 전기정보시스템공학과)
Lee, Ho-Keun (대진대학교 전기정보시스템공학과)
Publication Information
Journal of the Korean Institute of Electrical and Electronic Material Engineers / v.18, no.5, 2005 , pp. 484-489 More about this Journal
Abstract
Because of its effectiveness for the PD(Partial Discharge) pattern recognition, PSA(Pulse Sequence Analysis) has been considered as a new analytic method instead of conventional PRPDA(Phase Resolved Partial Discharge Analysis). However, it is generally thought that PSA has some possibility to misjudge patterns in case of data-missing resulting from poor sensitivity because it analyses the correlation between sequential pulses, which leads to hesitate to apply it to on-site. Therefore, in this paper, the problems of PSA such as data-missing and noise-adding cases were investigated. for the purpose, PD data obtained from various defects including noise-adding data were used and analyzed. As a result, it was shown that both cases could cause fatal errors in recognizing PD patterns. In case of the data missing, the error was dependant on the kinds of defect and the degree of degradation Also, it could be noticed that the error due to adding noises was larger than that due to some data missing.
Keywords
Partial discharge; PRPDA; PSA; Pattern recognition; Noise;
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