Method and system for control and protection of direct current subsea power systems

摘要

A method (600) and a high-voltage DC (HVDC) power system (100) are provided. The system includes a plurality of sending-end (SE) modules (110) coupled in electrical series and divided into at least two groups (111, 113) that each operate independently with respect to an electrical ground (112) and a plurality of receiving-end (RE) power converter modules (118) electrically coupled to the plurality of SE modules (110), the plurality of RE power converter modules including a fast ground-fault detection and control device (500), the plurality of RE power converter modules including a receiving-end front-end DC-DC converter controller (1100), and an output current damping control (1106).