Power control apparatus and power control method

摘要

A power control device is provided at a customer site having a distributed power supply capable of supplying power and load devices and controls a stand-alone operation in which the power supplied from the distributed power supply is converted to AC power and supplied to the load devices. The power control device comprises: a determination processing unit for determining whether or not a power supply supplied from the distributed power supply during the stand-alone operation satisfies a power demand necessary for operating the load devices; and a supply control unit for, when it is determined that the power supply does not satisfy the power demand, intermitting the stand-alone operation. After intermitting the stand-alone operation, the determination processing unit re-executes the stand-alone operation and determines whether the power supply satisfies the power demand or not. When it is consecutively determined predetermined times that the power supply does not satisfy the power demand or when a predetermined period of time has elapsed without determining that the power supply satisfies the power demand after determining that the power supply does not satisfy the power demand, the determination processing unit stops the re-execution.

主权项

1. A power control apparatus, provided at a consumer site having a distributed power supply capable of supplying power and a load equipment, controlling a stand-alone operation in which power supplied from the distributed power supply is converted into AC power and the converted AC power is supplied to the load equipment, the power control apparatus comprising:
a determination processing unit that determines whether or not a supplied power from the distributed power supply satisfies a demanded power required for operating the load equipment, when it operates in the stand-alone operation; and a supply control unit that suspends the stand-alone operation if it is determined that the supplied power does not satisfy the demanded power, wherein the determination processing unit
re-executes the stand-alone operation after suspending the stand-alone operation, and determines whether or not the supplied power satisfies the demanded power, andstops the re-executing of the stand-alone operation if it is determined continuously for a predetermined number of times that the supplied power does not satisfy the demanded power, or if a predetermined period elapses without determining that the supplied power satisfies the demanded power after determining that the supplied power does not satisfy the demanded power.