Title :
Effects of frequency and applied voltage on electrical treeing discharges
Author :
Suwarno ; Suzioki, Y. ; Mizutani, T. ; Uchida, K.
Author_Institution :
Dept. of Electr. Eng., Nagoya Univ., Japan
Abstract :
We have investigated, for low density polyethylene, the effects of frequency and applied voltage on electrical treeing discharges. Partial discharge (PD) number increased with frequency. At a constant frequency, PD number and average PD intensity increased linearly with applied voltage for applied voltage above a certain value. In the case of triangular applied voltage, average charge per cycle is the same for both positive and negative PDs. These were explained well by using the two-threshold model
Keywords :
electric breakdown; partial discharges; polyethylene insulation; trees (electrical); LDPE; applied voltage dependence; average charge per cycle; constant frequency; discharge intensity; electrical treeing discharges; frequency dependence; low density polyethylene; negative partial discharges; partial discharge number; positive partial discharges; triangular applied voltage; two-threshold model; Capacitors; Degradation; Dielectrics and electrical insulation; Equivalent circuits; Frequency; Partial discharges; Polymers; Pulse circuits; Threshold voltage; Trees - insulation;
Conference_Titel :
Conduction and Breakdown in Solid Dielectrics, 1995. ICSD'95., Proceedings of the 1995 IEEE 5th International Conference on
Conference_Location :
Leicester
Print_ISBN :
0-7803-2040-9
DOI :
10.1109/ICSD.1995.523010
