Blar i SINTEF Open på forfatter "Mermigkas, Athanasios"
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Formation of micro-cracks at the surface of a high voltage cable screen induced by aluminum corrosion
Lesaint, Cedric Michel; Liland, Knut Brede; Mermigkas, Athanasios; Klusmeier, Katharina Kuhlefelt; Kantar, Emre; Hvidsten, Sverre; Hestad, Øystein Leif Gurandsrud (Chapter; Peer reviewed, 2023)The main purpose of this study is to investigate the adhesion between corroded aluminium conductor strands and the semi-conductive cable screen. In this paper it is proposed that increased adhesion is one of the pre-requisites ... -
Frequency Dependence of the Electric Field Grading of End-Winding of Generator Bars
Aakre, Torstein Grav; Enoksen, Henrik; Eberg, Espen; Mermigkas, Athanasios; Hølto, Jorunn (Peer reviewed; Journal article, 2022)To reduce the electric field stresses in the end-winding in hydropower generator bars, a field dependent grading tape is applied in the transition zone from outer corona protection to bare insulation. The design is typically ...