Demonstrator project definition and system design studies

General assessment of the planned and foreseen regional multi terminal HVDC projects and a pan-European top-level review built on the PROMOTioN results and taking into account the ENTSO-E’s Ten Year Network Development Plan (TYNDP) and Projects of Common Interest (PCIs). Definition of the most relevant demonstrator grid design, architecture and topology for InterOPERA and future developments, and rationale for the evaluation and selection process Basic feasibility report for the defined demonstrator projectDiagrams showing the topology of the DC grid, including those of the individual installations and their connections:- DC grid architecture and topology, - DC grid main circuit data, - DC switching stations and aligned DC switching units, - DC grid energy absorbers, - AC/DC converter stations and aligned converter units.