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HVDC link between Mallorca and Spanish mainland A high-voltage direct current (H ...

HVDC link between Mallorca and Spanish mainland A high-voltage direct current (HVDC) link has been installed to connect Mallorca with the Spanish mainland. The link will allow a significant proportion of the Mallorca’s power demand to be met using wind, solar and hydroelectric power, which is produced on the mainland, while enhancing security of supply, says Siemens, which provided the HVDC technology. The link was commissioned by Red Eléctrica de España to enhance Mallorca’s energy security on and reduce power failures. ‘This project is representative of a trend in Europe: Power grids are distinctively coming closer together,’ said Michael Suess, CEO of Siemens Energy. Siemens installed two converter stations for the line, one near the island’s capital city Palma de Mallorca and a second on the Spanish mainland near Valencia. The line itself is 244 km long and can transfer 400 MW to Mallorca - around 25% of the island’s installed power plant capacity. The Spanish mainland power mix is made up of around 35% renewables, says Siemens, whereas Mallorca’s installed power plant fleet is operated mainly with gas, coal or oil. Compared with the construction of an additional new power plant, the link to the mainland will reduce annual carbon dioxide emissions by around 1.2mn tonnes, adds Siemens. The link laid to Mallorca comprises three single-piece submarine cables, which were supplied by the cable specialists Prysmian and Nexans and laid at a depth of as much as 1,500 meters on the Mediterranean seabed. Compared to overhead lines, HVDC reduces the transmission losses by between 30 and 50%, and can transfer 30-40% more energy with the same width of cable, says Siemens. Substation.tif - over two cols Inside the HVDC converter station in Santa Ponsa near Mallorca’s capital city Palma de Mallorca
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