Title :
Electrical breakdown characteristics of the XLPE cables under AC, DC and pulsating voltages
Author :
Grzybowski, S. ; Fan, J.
Author_Institution :
Dept. of Electr. & Comput. Eng., Mississippi State Univ., MS, USA
Abstract :
Electrical breakdown strength of the 5 kV XLPE cables was studied under ac, dc and pulsating voltages. The pulsating voltage was obtained by superimposing ac voltage on dc voltage. In the later case, the ratio of ac to dc voltage components (p=Vac/Vdc) was varied between the limits of 0.1<p<10. Both the sound and imperfect cables are used as the test samples. Two types of imperfections are studied: Cables samples with artificial holes and cables samples with embedded needles. Study results shows that the pulsating voltage is an effective way to detect the imperfections inside the XLPE cables
Keywords :
XLPE insulation; electric breakdown; insulation testing; power cable insulation; power cable testing; 5 kV; AC voltage; DC voltage; XLPE cable; artificial hole; electrical breakdown strength; embedded needle; imperfection; pulsating voltage; Aging; Breakdown voltage; Cable insulation; Electric breakdown; Insulation testing; Laboratories; Needles; Oil insulation; Power transformer insulation; System testing;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1997., Proceedings of the 5th International Conference on
Conference_Location :
Seoul
Print_ISBN :
0-7803-2651-2
DOI :
10.1109/ICPADM.1997.617618
