Temperature effect on space charge dynamics in XLPE insulation
نویسندگان
چکیده
منابع مشابه
The Conduction Characteristics of Electrical Trees in XLPE Cable Insulation
Depending on the morphology of the material and applied voltage frequency, three kinds of electrical trees can exist in cross-linked polyethylene (XLPE) cable insulation, which are conducting, non-conducting, and mixed trees with different growth mechanisms. It is suggested that when the needle is inserted into large spherulites, conducting trees will form in those spherulites; when it is inser...
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Dielectric breakdown of solid insulation has been studied for many years but the mechanisms that cause breakdown have not been fully understood. Charge injection always occurs at high electric fields and especially under dc conditions. The presence of space charge in solid dielectrics will result in distortion of electric field distribution. Dielectric breakdown can be initiated in the region w...
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The purpose of this work is to present and to discuss a methodology for the assessment of materials intended to HVDC-XLPE cables, particularly as regards the evaluation of the effects of material formulation on space charge accumulation within the insulation. Sample design, testing method and protocol and criteria used for the material evaluation are specifically considered. It will be shown th...
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ژورنال
عنوان ژورنال: IEEE Transactions on Dielectrics and Electrical Insulation
سال: 2007
ISSN: 1070-9878
DOI: 10.1109/tdei.2007.302873