Title :
A study about the influence of the rise-time of quasi-square voltages on the aging by partial discharges of a polymeric film
Author :
Centurioni, L. ; Coletti, G. ; Guastavino, F.
Author_Institution :
Dept. of Electr. Eng., Genova Univ., Italy
Abstract :
An experimental study about the influence of the factor dv/dt, which characterizes inverter supply quasi-square voltages, on the behaviour of a polymer film (PET) subjected to aging by partial discharges (PDs) has been performed. The outcome of special laboratory aging tests confirmed that the dv/dt plays a role in the aging process. The analysis of the times-to-failure data evidenced that a minimum time is found when increasing the dv/dt value. Also, the analysis of the acquired PD signals relevant to the partial discharges shows that the dv/dt values do not strongly affect the PD activity
Keywords :
ageing; insulation testing; machine insulation; organic insulating materials; partial discharges; polymer films; PD activity; inverter supply quasi-square voltages; laboratory aging tests; partial discharges; polyethylene terephthalate; polymeric film aging; quasi-square voltage rise-time; times-to-failure; Aging; Electrodes; Insulation; Inverters; Laboratories; Partial discharges; Polymer films; Positron emission tomography; Testing; Voltage;
Conference_Titel :
Electrical Insulation, 2000. Conference Record of the 2000 IEEE International Symposium on
Conference_Location :
Anaheim, CA
Print_ISBN :
0-7803-5931-3
DOI :
10.1109/ELINSL.2000.845411
