Title :
The study of the tree-inception phenomenon in LDPE
Author :
Gefle, O.S. ; Lebedev, S.M. ; Pokholkov, Y.P. ; Cherkashina, E.I. ; Golenko, O.V. ; Lavrov, V.Y. ; Kolesnikov, A.A.
Author_Institution :
Inst. of High Voltage Res., Tomsk Polytech. Univ., Russia
fDate :
26 June-3 July 2004
Abstract :
The results of study of the tree-inception process in LDPE in the needle-plane configuration under 50 Hz AC voltage are represented in this paper. The tree-inception was studied in visible, UV, and IR spectra with simultaneous monitoring the PD-parameters. It was established that the tree-inception is accompanied by the radiation in visible and UV spectra and by the local temperature rise on the sample surface by a factor of 1.5 to 2 irrespective of the experimental conditions such as the applied voltage, the needle tip radius and interelectrode distance. It was found the direct correlation between the temperature-temporal parameters and PD-parameters of the tree-inception process. It was shown that a diagnostics of the tree inception by means of measurements of the local temperature rise on the dielectric surface and PD-parameters is possible.
Keywords :
infrared spectra; materials testing; partial discharges; polyethylene insulation; trees (electrical); ultraviolet spectra; visible spectra; 0.38 to 0.78 mum; 0.7 to 100 mum; 10 to 380 nm; 50 Hz; IR spectra; LDPE; UV spectra; low-density polyethylene; temperature-temporal parameters; tree-inception phenomenon; visible spectra; Dielectrics; Electrodes; Monitoring; Needles; Optical filters; Optical sensors; Parity check codes; Temperature distribution; Thermal stresses; Voltage;
Conference_Titel :
Science and Technology, 2004. KORUS 2004. Proceedings. The 8th Russian-Korean International Symposium on
Print_ISBN :
0-7803-8383-4
DOI :
10.1109/KORUS.2004.1555323
