Summary
In South Korea, an extra high voltage cable system was installed prior to its commercial operation. Before the system was energized, unexpected cable movement was observed, particularly on sloped sections and industrial roads. Gravity and repeated vehicle loads caused cables to move, eliminating the pre-installed offset in manholes. This offset is essential for absorbing thermal expansion during operation; its loss may increase mechanical stress on joints.
Read more Read lessThis paper analyzes the displacement mechanisms using theoretical models and field data, and presents practical preventive and remedial measures, including a stopper system and a cable pull-back device, to restore offsets and ensure mechanical stability.
Additional informations
| Publication type | Session Materials |
|---|---|
| Reference | B1_11729_2026 |
| Publication year | |
| Publisher | CIGRE |
| Country | Korea, Republic of (South Korea) |
| Study committees | |
| File size | 973 KB |
| Price for non member | 30 € |
| Price for member | 30 € |
Authors
HEO Hoi-deok - LS Cable & System; SHIN Min-ho - LS Cable & System; SUNG Kyoung-jun - LS Cable & System; SEO Sang-hoon - LS Cable & System
Keywords
Cable Creepage, Thermal Expansion, Cable Offset System, Cable Movement, Cable Displacement, Cable Stopper, Pull-back Device
