Title :
Electrical breakdown strength of 5 kV imperfect XLPE cable after combined AC-DC excitation
Author :
Grzybowski, S. ; Fan, J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Mississippi State Univ., MS, USA
Abstract :
Electrical breakdown strength of 5 kV imperfect XLPE cable under different combined AC-DC excitation is studied. Two types of imperfect cable samples were used in this research: cable samples with artificial holes inside the insulation and cable samples with embedded metal needles. A comparison of the breakdown voltage under pulsating excitation for imperfect and sound cable shows that the pulsating excitation can be used to detect the imperfections inside XLPE cable. The effect of the pulsating voltage excitation on the degradation and remaining breakdown voltage of the tested cable is studied. The remaining breakdown voltage of the tested cable is evaluated with AC excitation
Keywords :
XLPE insulation; ageing; electric breakdown; electric strength; insulation testing; power cable insulation; power cable testing; 5 kV; breakdown voltage; combined AC-DC excitation; electrical breakdown strength; embedded metal needles; imperfect XLPE cable; imperfections detection; insulation holes; pulsating excitation; Aging; Breakdown voltage; Cable insulation; Dielectrics and electrical insulation; Electric breakdown; Insulation testing; Laboratories; Needles; Power transformer insulation; System testing;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1996., IEEE 1996 Annual Report of the Conference on
Print_ISBN :
0-7803-3580-5
DOI :
10.1109/CEIDP.1996.564685
