Thermal aging management for electricity distribution networks: FEM-based qualification of underground power cables

It is well-known that there no PLAN-DO-CHECK-ACT (PDCA) approach used by electricity distribution network operators and asset managers of power cable systems. Accordingly, this paper proposes a novel application the PDCA to thermal aging management underground cables in networks. Another novelty proposed finite element method (FEM) combination with traditional Arrhenius model calculate unknown temperature conductors under service conditions. In particular, means FEM-based can involve effects other heat sources, wind, solar irradiation, etc., procedures for qualification cables. The applied an actual hot spot 110 kV line most importance reliable operation city Belgrade. spot, installed parallel group 35 crosses heating pipe-line. successfully validated using existing experimental data on cross-linked polyethylene insulation. Finally, it found effect shorten expected total lifespan area 36.84%, as well largest consumption occurs presence all effects.