Capacitor commutated converters for high power HVDC transmission

Two concepts for the transmission with a high power capacity using HVDC technology are analysed in this paper. The technology of capacitor commutated converters (CCC) is presented and the design of two system models is described. Their steady-state as well as transient performance is presented and the CCC is compared to the conventional HVDC transmission. The advantages of the CCC for high power transmission are shown.