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

A control method in 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 converter and a second base including a second power supply converter and a load device are connected by electrical supply lines, the control method comprising:

• acquiring information about a bus between the second power supply converter and the load device;
• determining whether the DC power supply system is in an unstable state in which a voltage or a current of the bus oscillates, based on the information and a threshold value;
• and
• executing voltage control on at least one of the first power supply converter and the second power supply converter to suppress the oscillation in a case where it is determined that the DC power supply system is in the unstable state.

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 converter and a second base including a second power supply converter and a load device are connected by electrical supply lines, the control apparatus comprising:

• a processor;
• and
• a memory that includes instructions, which when executed, cause the processor to execute:
• acquiring information about a bus between the second power supply converter and the load device;
• determining whether to execute voltage control in the DC power supply system, based on the information and a threshold value;
• and
• executing voltage control on at least one of the first power supply converter and the second power supply converter in a case where the control is determined to be executed,
• wherein
• the information is an actually measured value of a current flowing via the bus, and
• the determining includes calculating a predicted value of the current from a voltage of the first power supply converter and a voltage of the second power supply converter and comparing a difference between the predicted value and the actually measured value with the threshold value to determine whether to execute the control.