Inspec keywords: HVDC power convertors; HVDC power transmission; power capacitors; voltage control; fault currents; power transmission faults; reactive power

Other keywords: DC-link fault current suppression; reduced power transmission; full bridge MMC flexible operation; low voltage operation; different operating modes; output characteristics; long-distance overhead line; zero voltage output characteristic; EMTDC; different operation modes; reactive power; half bridge topology; constant power; negative voltage output; sub-module capacitor voltage; full-bridge MMC; DC line fault; PSCAD; positive voltage output; flexible control; full bridge sub-module topologies; reduced DC voltage operation; control strategies; insulation reduction; power devices; DC voltage operation; storage capacitor voltage balance

Subjects: d.c. transmission; Power convertors and power supplies to apparatus; Control of electric power systems; Voltage control