High-voltage cable metal sheath circulating current suppression device

The invention discloses a circulating current suppression device for a metal sheath of a high-voltage cable. The device comprises a sheath circulating current suppression system, a fling-cut switch and a control module, and the fling-cut switch is used for controlling the sheath circulating current suppression system to be switched on or switched off according to a control signal sent by the control module; the sheath circulating current suppression system is connected in parallel with the fling-cut switch and is used for suppressing the metal sheath circulating current of the sheath terminal; and the control module is connected with the fling-cut switch and is used for generating a control signal according to the detection current sent by the current detection module and sending the control signal to the fling-cut switch. According to the technical scheme of the embodiment of the invention, the switching switch and the control module are additionally arranged, so that the sheath circulating current suppressi