Control apparatus, control method, and program for suppressing oscillation in a DC power supply system

There is provided a control apparatus that executes control for a DC power supply system in which a plurality of bases including at least a first base including a first power supply device and a second base including a second power supply device and a load device are connected by electrical supply lines, the control apparatus including: an information acquisition unit that acquires information about a bus between the second power supply device and the load device; a determination unit that determines whether to execute voltage control in the DC power supply system, based on the information and a threshold value; and a control unit that executes voltage control on at least one of the first power supply device and the second power supply device in a case where the determination unit determines to execute the control.