Title :
Effect of frequency on XLPE cable insulation at high electric field
Author :
Bamji, S.S. ; Bulinski, A.T. ; Cissé, L. ; Tohyama, K.
Author_Institution :
Nat. Res. Council of Canada, Ottawa, Ont., Canada
Abstract :
Electroluminescence (EL), the emission of light in dielectrics subjected to high electric stress, is a very sensitive technique to detect space charge injection and the very early stages of insulation degradation. In this paper the EL technique is employed to determine the effect of frequency in the range of 5 to 600 Hz on unaged and aged crosslinked polyethylene (XLPE) insulation of underground high voltage cables. The number of EL pulses emitted from XLPE and the area of the space charge region simultaneously obtained by the PMT and CCD camera are studied as the frequency of the ac voltage is varied between 5 and 600 Hz. The implications of the frequency range on diagnostic tests performed on the polymeric insulation of underground power cables is discussed
Keywords :
XLPE insulation; charge injection; electroluminescence; insulation testing; power cable insulation; space charge; underground cables; 5 to 600 Hz; EL technique; XLPE cable insulation; aged crosslinked polyethylene; diagnostic tests; dielectrics; electroluminescence; frequency; high electric field; high electric stress; insulation degradation; polymeric insulation; space charge injection; unaged polyethylene; underground high voltage cables; underground power cables; Aging; Cable insulation; Degradation; Dielectrics and electrical insulation; Electroluminescence; Frequency; Polyethylene; Space charge; Stress; Voltage;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 2001 Annual Report. Conference on
Conference_Location :
Kitchener, Ont.
Print_ISBN :
0-7803-7053-8
DOI :
10.1109/CEIDP.2001.963513
