Title :
Nanostructured-coated XLPE showing improved electrical properties: Partial discharge resistance and space charge accumulation
Author :
Fabiani, Davide ; Montanari, Gian ; Cavallini, Andrea ; Saccani, A. ; Toselli, M.
Author_Institution :
DIE, Univ. of Bologna, Bologna, Italy
Abstract :
The electric properties of hybrid organic-inorganic nanostructured coated XLPE are investigated in this paper with the purpose to understand if this class of nanostructured insulating material could have applications in the field of high voltage electrical insulation. Space charge measurements and aging tests under partial discharge activity were performed on different kinds of nanocoated specimens and the results compared to the base XLPE. The paper shows that space charge accumulation can be reduced significantly by some coatings which could increase the injection barrier. Moreover, surface erosion caused by partial discharges can be slowed down even by a thin coating of about 1 μm, which creates a `barrier effect´ to partial discharge propagation in the insulation bulk.
Keywords :
XLPE insulation; ageing; erosion; insulating materials; nanostructured materials; organic-inorganic hybrid materials; partial discharges; protective coatings; space charge; aging tests; barrier effect; electrical properties; high voltage electrical insulation; hybrid organic-inorganic coated XLPE; injection barrier; insulation bulk; nanostructured insulating material; nanostructured-coated XLPE; partial discharge resistance; space charge accumulation; space charge measurements; surface erosion; thin coating; Aging; Coatings; Insulation; MONOS devices; Materials; Partial discharges; Space charge; blocking effect; electrical insulation; hybrid organic/inorganic nanocoating; partial discharges; space charge;
Conference_Titel :
Electrical Insulating Materials (ISEIM), Proceedings of 2011 International Conference on
Conference_Location :
Kyoto
Print_ISBN :
978-4-88686-074-3
DOI :
10.1109/ISEIM.2011.6826265
