Title :
The influence of test voltage waveforms on partial discharge activity in XLPE
Author :
Cavallini, A. ; Montanari, G.C. ; Mariut, L.E.
Author_Institution :
Dept. of Electr. Eng., Univ. of Bologna, Bologna, Italy
Abstract :
The influence of applied voltage waveform on partial discharges in cavities embedded in cross-linked polyethylene is investigated in this paper. The voltage waveforms dealt with are (a) 50 Hz sinusoidal, (b) 0.1Hz sinusoidal, (c) oscillating voltage waveforms having different frequencies and decay time constant of 80 ms. The results show that, under sinusoidal waveforms, 0.1Hz generally provides the lowest PDIV values, whereas PDIV increase slightly with frequency. Oscillating voltage waveforms can provide very inaccurate PDIV estimates, with errors up to about 100%.
Keywords :
XLPE insulation; partial discharges; PDIV estimates; PDIV values; XLPE; applied voltage waveform; cross-linked polyethylene; decay time constant; frequency 0.1 Hz; frequency 50 Hz; oscillating voltage waveforms; partial discharge activity; test voltage waveforms; time 80 ms; Cavity resonators; Dielectrics; Partial discharges; Power cables; Testing; Time frequency analysis; Oscillating Wave Voltages; Partial Discharges; Very Low Frewquecy;
Conference_Titel :
Electrical Insulation (ISEI), Conference Record of the 2012 IEEE International Symposium on
Conference_Location :
San Juan, PR
Print_ISBN :
978-1-4673-0488-7
Electronic_ISBN :
1089-084X
DOI :
10.1109/ELINSL.2012.6251531
