Expand the thermal model in Cigré TB 207 (2002) to improve the accuracy of calculations at low wind speed and to allow calculations with new types of high temperature conductors. In particular, the revised thermal model will allow ac resistance calculations at the high current densities typical of lines operating at their thermal limit.
In addition, a more flexible solar heat input calculation will be added and a temperature tracking algorithm developed for use in real-time rating calculations(coordination with WG 36). A numerical format for the heat balance will be added and explained to allow convenient numerical
calculation by users.