A plant for transmitting electric power

摘要

A plant for transmitting electric power comprises a direct voltage network (1) for High Voltage Direct Current (HVDC) and at least one alternating voltage network (5) connected thereto through a station. The station is adapted to perform transmitting of electric power between the direct voltage network and the alternating voltage network and comprises at least one VSC-converter (9) arranged to convert direct voltage into alternating voltage and conversely. At least one parallel connection of at least a semiconductor element (14) of turn-off type and a surge diverter (15) is connected in the direct voltage network.