The Caithness–Moray HVDC scheme (CM), currently under construction, will enable wind generators in Caithness to connect to the rest of the UK grid, bringing the abundant wind resource in the north of Scotland to the rest of the UK. Converter stations are being built at Spittal (800MW capacity) and Blackhillock (1200MW capacity). The scheme has been designed to extend to up to 5 other terminals, making it Europe’s first multi-terminal HVDC grid design. An extension to Shetland is currently being considered.
Multi-terminal DC links bring greater flexibility to DC transmission. As this is a new technology there is a requirement to build operational and technical knowledge to reduce risks associated with their deployment. The National HVDC Centre will host control replicas from CM allowing extensive testing of its interactions with the rest of the UK system, especially other HVDC schemes and power electronic systems. It will also facilitate the training of HVDC operators.
Other projects planned for the centre are: