Title :
Diagnosis of practical insulation systems by partial discharge measurements in the presence of multi-discharge phenomena
Author :
Cacciari, M. ; Contin, A. ; Rabach, G. ; Montanari, G.C.
Author_Institution :
Trieste Univ., Italy
Abstract :
The shape analysis of multiple partial-discharge (PD) phenomena is addressed in connection with the representation of the cumulative PD height distribution in a Weibull plot. It is shown that a multiplicatively-Weibull distribution can fit PD data obtained from measurements performed on stator bars when two PD phenomena are superimposed. Pattern identification and clustering is thus achieved, so that each PD phenomenon can be investigated as a function of measurement voltage and aging time. The effectiveness of the Weibull representation as a diagnostic tool is therefore derived
Keywords :
Weibull distribution; ageing; charge measurement; insulation testing; partial discharges; Weibull plot; aging time; cumulative PD height distribution; insulation systems; measurement voltage; multi-discharge phenomena; multiplicatively-Weibull distribution; partial discharge measurements; shape analysis; stator bars; Aging; Breakdown voltage; Insulation; Partial discharge measurement; Partial discharges; Performance analysis; Performance evaluation; Pulse measurements; Stator bars; Testing;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1993. Annual Report., Conference on
Conference_Location :
Pocono Manor, PA
Print_ISBN :
0-7803-0966-9
DOI :
10.1109/CEIDP.1993.378937
