This study presents an analysis of ampacity evaluation techniques in overhead transmission lines based on methods for calculating conductor capacity through static and dynamic line rating analysis. It is specifically applied to high-temperature low-sag (HTLS) conductors, comparing theoretical results with empirically obtained real-time measurements. International standard methodologies, such as those from the IEEE and CIGRE, are examined to assess the impact of meteorological conditions on the performance of overhead transmission lines. Theoretical analyses are contrasted with experimental results obtained through a physical simulation prototype designed specifically for this purpose. A comparative analysis is presented that evaluates the deviations in conventional ampacity calculation techniques based on conductor temperature, comparing them with their performance in experimental situations for High-Temperature Low-Sag conductors under high load demand. This research offers an analytical perspective for optimizing the performance of transmission lines through the use of high-density currents. The results analyze the accuracy of calculation methodologies under different load and environmental scenarios, identifying conditions with the highest deviations, to enable more efficient and secure management in high-demand scenarios.

The continuous rise in global energy demand has necessitated the adaptation of conventional power systems to meet increasing consumption requirements and to enhance energy transmission capabilities. The transition from a centralized energy model to one based on renewable sources requires a shift from traditionally linear and radial transmission infrastructures to decentralized networks that integrate diverse renewable generation sources. To ensure optimal performance and reliability in this new paradigm, it is essential to implement more advanced and precise strategies for the control and management of power grid operations. In this context, improving transmission networks becomes a critical factor, as they often represent bottlenecks in the modernization and decarbonization ofthe energy system. This project aims to contribute to the optimization of transmission lines, with the objective of maximizing the integration of energy generated by decentralized renewable sources. To this end, a real prototype has been developed to analyze the thermal and electrical behavior of power conductors in real operating conditions. The experimental setup is designed to support the assessment of dynamic line rating (DLR) strategies applied to both conventional and high-temperature low-sag (HTLS) conductors, enabling amore efficient use of existing transmission infrastructure and facilitating the transition towards a more sustainable andresilient energy system.