The Underground HV DC Link for the Transmission of Bulk Power from the Thames Estuary to the Centre of London

The Kingsnorth scheme will be the first to integrate dc transmission within a closely interconnected ac system. The performance requirements of mixed schemes are described and an outline is given of some design features of converter stations, of control and protection aspects, and of the design of the power cable system. Details are given of the developments carried out by one cablemaker, the type test requirements and their successful conclusion.