Title :
Influence of the polyethylene structure on the space charge apparition
Author :
Vella, N. ; Toureille, A.
Author_Institution :
Lab. d´´ElectroTech., Univ. des Sci. et Tech. du Languedoc, Montpellier, France
Abstract :
The study shows the influence of the polymer morphology, and in particular that of the spherulite size, on the apparition of space charges in polyethylene plaques. We show that a substantial distribution of space charges is perceptible immediately after the preparation of the samples. The application of an increasing electric field amplifies the space charges profile already observed in in non polarised samples. The study is carried out to the breakdown of the sample
Keywords :
electric breakdown; polyethylene insulation; polymer structure; power cable insulation; space charge; breakdown; increasing electric field; polyethylene plaques; polyethylene structure; polymer morphology; power cable insulation; space charge apparition; space charge distribution; space charges profile; spherulite size; thermal step method; Cable insulation; Capacitance; Current measurement; Dielectrics and electrical insulation; Electric breakdown; Electrodes; Polyethylene; Power cables; Space charge; Temperature;
Conference_Titel :
Electrical Insulation and Dielectric Phenomena, 1996., IEEE 1996 Annual Report of the Conference on
Conference_Location :
Millbrae, CA
Print_ISBN :
0-7803-3580-5
DOI :
10.1109/CEIDP.1996.564617
