Advanced PD noise suppression and its relevance for computer aided PD defect identification.

Accession number;02A0423778
Title;Advanced PD noise suppression and its relevance for computer aided PD defect identification.
Author; KRANZ H-G (Bergische Univ.-gh Wuppertal, Wuppertal, Deu)
Journal Title;Proceedings of the Symposium on Electrical and Electronic Insulating Materials and Applications in Systems
Journal Code:G0398B
ISSN:
VOL.33rd;NO.;PAGE.11-19(2001)
Figure&Table&Reference;FIG.11, TBL.1, REF.17
Pub. Country;Japan
Language;English
Abstract;Digital partial discharge(PD) defect identification has become state of the art. But computer aided procedures based on pattern recognition principles are negatively effected by pulse-shaped disturbances. It is pointed out that a sufficient noise suppression and noise resistivity is a must for automated diagnosis. A novel approach is presented, which improves the defect identification on-site at noisy conditions. The benefits and limits of expert diagnosis compared to machine intelligent systems are discussed. Experimental results are presented, taken into account hard- and software noise suppression components. It is shown that PD defect identification at operating voltages and respectively disturbed data is still a challenge. A method of resolution with an intelligent neural noise filter and noise resistant diagnosis concepts are discussed. (author abst.)