Title :
Change in partial discharge properties of a void in LDPE
Author :
Mizutani, T. ; Kondo, T. ; Nakao, K.
Author_Institution :
Dept. of Electr. Eng., Nagoya Univ., Japan
Abstract :
Partial Discharges (PD) cause the degradation of insulating materials and govern the lifetime of high-voltage power apparatus and cables. Therefore, it is important to understand the PD behaviors in the aging process. In this paper, partial discharges and their current shapes of low-density polyethylene (LDPE) with a void were measured. The PD φ-q-n pattern and the current shape changed remarkably with time and were related to each other. They depended not only upon the size and shape of voids but also on the degree of PD degradation. This suggests the possibility of insulation diagnosis using PD characteristics
Keywords :
ageing; insulation testing; partial discharges; polyethylene insulation; voids (solid); LDPE; PD; PD φ-q-n pattern; PD degradation; aging process; current shapes; high-voltage power apparatus; insulating material degradation; insulation diagnosis; partial discharge properties; void shape; void size; Aging; Current measurement; Degradation; Electric breakdown; Electrodes; Insulation; Partial discharges; Resistors; Shape measurement; Voltage;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1999 Annual Report Conference on
Conference_Location :
Austin, TX
Print_ISBN :
0-7803-5414-1
DOI :
10.1109/CEIDP.1999.804639
