A comparative assessment of different alternatives to repower transmission corridors for the future supergrid

Abstract

In order to allow the integration of the maximum amount of renewable energy in the European network, it is necessary to think about different solutions that meet the technical requirements at the same time that are compatible with the investment shortage. One option could be the development of a supergrid based on the uprating of the existing transmission system. In this paper, three different alternatives are proposed. The first two options require the installation of an upper module, being the difference of both options in the transmission technology: HVAC or HVDC. The third option consists in mixing both technologies, making use of the existing double circuit towers. At the end, a comparison between the three alternatives is shown.