Title :
Separation of multiple sources in PD measurements using an amplitude-frequency relation diagram
Author :
Kuljaca, Nikola ; Meregalli, Sergio ; Contin, Alfredo ; Ukovich, Anna
Author_Institution :
ERSE S.p.A., Milan, Italy
Abstract :
A new procedure for the pulse signal separation generated by multiple sources during Partial Discharge (PD) measurements, is presented in the paper. It is based on the analysis of signals projected into a 3D Amplitude-Frequency Space (AFS) obtained by selecting three different frequencies from the FFT of the recorded signals. Assuming that the same source can exhibit signals having similar shape, those which show different shapes i.e. different frequency spectrum, are grouped differently in this space. The DBSCAN algorithm is adopted here to select the different groups (clusters) of 3D AFS. The relevant Phase Resolved PD sub-patterns are derived accordingly. A case study is also discussed to show the validity of the method.
Keywords :
partial discharge measurement; signal classification; source separation; 3D amplitude frequency space; DBSCAN algorithm; PD measurements; amplitude frequency relation diagram; multiple sources separation; partial discharge measurement; phase resolved PD subpattern; pulse signal separation; Classification algorithms; Clustering algorithms; Noise; Partial discharge measurement; Partial discharges; Shape; Three dimensional displays; Partial Discharges; clustering; diagnostics; signal classification; solid insulation;
Conference_Titel :
Solid Dielectrics (ICSD), 2010 10th IEEE International Conference on
Conference_Location :
Potsdam
Print_ISBN :
978-1-4244-7945-0
Electronic_ISBN :
978-1-4244-7943-6
DOI :
10.1109/ICSD.2010.5568142
