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
Published version
Permanent lenke
https://hdl.handle.net/11250/3121821Utgivelsesdato
2023Metadata
Vis full innførselSamlinger
- Publikasjoner fra CRIStin - SINTEF Energi [1614]
- SINTEF Energi [1731]
Originalversjon
Jicable'23 - 11th International Conference on Power Insulated Cables, Lyon - France 18-22 June 2023 : proceedingsSammendrag
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 for the local degradation of the semi-conductive cable screen causing severe water treeing in the XLPE insulation. A model test set-up was developed and used including samples with a dried corrosion layer between a heat pressed semi-conductive cable screen and an aluminium metallic surface. The results show that the adhesion was strongly increased when the Al surface was corroded. KEYWORDS HV subsea cables, water treeing, stress induced electrochemical degradation, corrosion, adhesion. Formation of micro-cracks at the surface of a high voltage cable screen induced by aluminum corrosion