Fault current experimental detection device of Direct Current (DC) transmission converter valve

The utility model relates to a fault current experimental detection device of a Direct Current (DC) transmission converter valve, in particular to a fault current experimental detection device for detecting the fault adaptation capability of a converter valve. The device comprises a high-voltage low-current circuit and a low-voltage high-current circuit, and a fault current circuit; and the high-voltage low-current circuit, the low-voltage high-current circuit and the fault current circuit are respectively and serially connected with a test sample converter valve Vt. The device first heats the test sample converter valve through the high-voltage circuit and the high-current circuit and reaches a stable state, then provides the required fault current with the fault current circuit, carries out the experiment after a switch is cut off, thereby preventing the short-circuit impact of an electric power system, and realizing the fault current peak and the flexibility and adjustability of the duration by adjusting the voltage of an energy supplementing loop.