HVAC-to-HVDC OHL conversion: a study case in the Sicilian transmission network

The present paper describes the network analyses and the evaluation studies concerning the potential HVAC (High Voltage Alternating Current)-to-HVDC (High Voltage Direct Current) conversion of a transmission line in a realistic case of the Italian power system in a 2030 scenario. The activity, carried out in the framework of the collaboration between RSE and the University of Padova, has started with the definition and set-up of the reference power and energy scenario for the year 2030. The selected power and energy scenario for the Italian system at the horizon year 2030 is based on the NECP (National Energy and Climate Plan). In this context, particular attention has been devoted to the power system of Sicily, focusing the analysis on the possible 2030 grid congestions, also due to the massive electricity production by renewable energy sources, especially in the western part of the island.