Summary
Quality Control (QC) of on-site cable installation processes, such as HVDC joint or termination installations, have traditionally focused on different HV testing methodologies. Today, new technologies are rapidly emerging that allow for a better, more direct control and feedback on geometric surface quality, employing metrology grade 3D scanning. This proprietary 3D surface inspection technique, analysing the full on-site prepared cable surface at 100 µm resolution at an accuracy down to 20 µm, employs subsequently a tailor-developed algorithm to generate a set of visualizations with acceptance criteria on the jobsite. In this work, a
Read more Read lessStructured Dataset (SD) assessment was performed on a subset of ~100 scan jobs, performed amongst a multitude of geographic locations. The assessment revealed effective algorithm performance and indicates a clear distinction between good and bad surface quality.
Furthermore, typical visualizations computed by the algorithms are shown, as well as some examples of surface quality rejects. Since the quality metrics have been computed directly on the jobsite, the close feedback loop to the installers has allowed for remediation before finalization of the HVDC cable accessory installation. This highlights one of the key benefits of the technology, enabling the visualization of quality to installers and to all other parties involved, along with full traceability of the results.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | B1_11837_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | Norway |
| Study committees | |
| File size | 2 MB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
DOEDENS Espen - Nexans Norway; KJØNIGSEN Sebastian - Nexans Norway; DRAGESET Thomas - Nexans Norway
Keywords
HVDC, Cable, Joint, Accessory, Surface Inspection, Quality Control, Algorithm, Database, Installation
