Effect of Radial Pressure and Lubricant Types on Partial Discharge Inception in a Slip/On Medium Voltage XLPE Cable Termination
Chapter, Peer reviewed
Published version
Permanent lenke
https://hdl.handle.net/11250/3124890Utgivelsesdato
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 most critical section in a cable termination or a subsea connector is the interface between the cable surface and the inner surface of the termination body, including the semiconductive geometric field grading. Partial discharge (PD) measurements were performed on a commercial 24 kV slip-on termination installed on a 12-kV XLPE cable, including two different lubricants and two additional external radial pressures, using an insulating vulcanization (IV) rubber tape. The results indicated that increasing the total radial pressure above the nominal level obtained when expanding the termination on the cable core resulted in a higher PD inception voltage independent of the lubricant type. It is also likely that the higher viscosity of the lubricant increased the PD inception voltage of the termination at the same interfacial stress and surface roughness. KEYWORDS Cable termination, inception, interfacial pressure, insulating liquid, lubricant, partial discharge. Effect of Radial Pressure and Lubricant Types on Partial Discharge Inception in a Slip/On Medium Voltage XLPE Cable Termination