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.
1 . 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 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.
2 . The control apparatus according to claim 1 , 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.
3 . The control apparatus according to claim 2 , wherein
the executing of the voltage control includes executing voltage control on at least one of the first power supply converter and the second power supply converter such that the difference between the predicted value and the actually measured value is equal to or less than the threshold value.
4 . The control apparatus according to claim 1 , wherein
the information is an actually measured value of a voltage of the bus, and
the determining includes determining whether to execute the control by comparing the actually measured value with the threshold value.
5 . 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.
6 . A non-transitory computer-readable recording medium having computer-readable instructions stored thereon, which when executed, cause a computer including a memory and a processor to execute the control method according to claim 5 .
7 . 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.