Patent ID: 11929621
Assignee: GS YUASA INTERNATIONAL LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H | IPC H

Claim 2:
3. A power control apparatus for a distributed power supply interconnected with a power system, the power control apparatus comprising:
a conversion circuit that performs reverse conversion of converting power supplied from the distributed power supply from direct current (DC) to alternating current (AC) and outputting the converted power; and
a control device that controls the conversion circuit,
wherein the control device
changes a target value of received power at a power reception point of the power system on a basis of a predicted value of a power generation amount of the distributed power supply and a predicted value of power consumption of a demand facility, and
controls an output of the conversion circuit such that the received power at the power reception point becomes the target value,

the conversion circuit is a bidirectional conversion circuit that selectively performs reverse conversion of converting power supplied from the distributed power supply from DC to AC and outputting the converted power or forward conversion of converting power supplied from the power system from AC to DC and outputting the converted power,
to the conversion circuit, an energy storage apparatus is connected in parallel with the distributed power supply, and
the control device changes the target value of the received power to a value smaller than the predicted value of the power consumption when the predicted value of the power consumption is larger than the predicted value of the power generation amount of the distributed power supply, the control device causing the conversion circuit to perform a reverse conversion operation to discharge the energy storage apparatus.