Impact Of Climate Changes On Overhead Transmission Lines

The consequences of climate change are felt everywhere, especially in power systems and overhead lines as one of its most exposed elements. It is expected that impact of climate changes will be even more expressed in the coming decades, with an increasing possibility of occurrence of extreme conditions in the form of storms, winds, snow, ice, high temperatures, fires, etc. Therefore, it is essential to ensure the safe and stable operation of power networks. In this paper, an experience with two strong storms which appeared within only two days in July, 2023 affecting larger part of Croatian transmission network is presented, in order to discuss whether it is necessary to change valid requirements at design phase of new overhead lines. Also, it shows a huge significance of neighbouring transmission system collaboration, especially in terms of modular emergency restoration tower exchange in cases of unpredictable weather phenomena.