The invention discloses a transient energy dissipation device control system which comprises a transient energy dissipation main controller and one or a plurality of transient energy dissipation controllers, wherein the transient energy dissipation main controller communicates with the high-voltage direct-current controller, and also communicates with the one or the plurality of transient energy dissipation controllers; and each transient energy dissipation controller is used for controlling the input or output of a transient energy dissipation actuating unit. The transient energy dissipation device control system is used for consuming transient energy aggregation generated by the phase conversion failure or locking of the direct-current transmission of the ultra-high-voltage alternating current-direct current system, thereby preventing the system voltage, power angle and frequency from destabilization.