Aspects to take into account in the application of mechanical calculation to high-temperature low-sag conductors

Reconductoring with high-temperature low-sag (HTLS) conductors is an alternative to the traditional uprating methods. An increase in the obtained rating depends on the mechanical and thermal behaviours of the conductor. The HTLS conductors are presented and mechanical calculation methods are analysed taking into account the special characteristics of these conductors. The widely used graphical method and the recently developed STOC method have been analysed.