Title :
Study of the dielectric properties of oil impregnated PPLP for UHV cable insulation
Author :
Yougong Wang ; Xianmin, Chang ; Liqin, Li ; Ziyu, Liu ; Shaochang, Zhou
Author_Institution :
Dept. of Electr. Eng., Xi´´an Jiaotong Univ., China
Abstract :
The dielectric properties and breakdown strength of oil-impregnated polypropylene laminated paper (PPLP), the compatibility between oil and PPLP, and accelerated life test on a miniature cable model are examined. Ways to improve the characteristics of PPLP have been suggested. Experiments show that the properties of impregnated PPLP with dodecyl benzene are superior to those of kraft paper, and that this material can be used in insulating ultrahigh-voltage cables. In comparison with the high-voltage cable kraft paper, the ε-tgδ of PPLP is only about 40% of that of kraft paper, while the AC and DC breakdown strength of PPLP is 15% and 30% higher than that of kraft paper, respectively
Keywords :
cable insulation; dielectric properties of solids; electric breakdown of solids; electric strength; insulating oils; insulation testing; life testing; paper; polymers; power cables; UHV cable insulation; accelerated life test; breakdown strength; dielectric properties; dodecyl benzene; oil impregnated paper; organic insulation; polypropylene laminated paper; power cables; ultrahigh-voltage cables; Atmospheric measurements; Cable insulation; Dielectric breakdown; Dielectric materials; Dielectrics and electrical insulation; Electric breakdown; Electrical resistance measurement; Oil insulation; Petroleum; Testing;
Conference_Titel :
Properties and Applications of Dielectric Materials, 1988. Proceedings., Second International Conference on Properties and Applications of
Conference_Location :
Beijing
DOI :
10.1109/ICPADM.1988.38491
