POWER CONTROL APPARATUS AND POWER CONTROL METHOD USING SAME

摘要

The present invention provides a power control method and a power control apparatus. The power control method of the present invention comprises the steps of: a first charge comparison step for receiving charge information of supplied power, and comparing the charge of the supplied power with a preset reference charge; and a second charge comparison step for comparing the charge of the supplied power with the preset lowest charge. Further, the method comprises the steps of: a first power quantity comparison step for confirming a stored power quantity within a power storage unit, and comparing the stored power quantity with a preset reference power quantity; and a second power quantity comparison step for comparing the stored power quantity with a preset power quantity demand. Further, the method comprises a control step for selecting one of externally supplied power and internally stored power as the usage power for the customer, through at least one of a charge comparison step and the power quantity comparison step. Particularly, the invention is characterized in that: if the charge of the supplied power is lower than the reference charge or the charge of the supplied power is higher than the reference charge in the first charge comparison step, the externally supplied power is selected as the usage power for the customer in case the stored power quantity is lower than the reference power quantity and the power quantity demand, through the first and second power quantity comparison steps; and if the charge of the supplied power is higher than the reference charge in the first charge comparison step, the stored power is selected as the usage power for the customer in case the stored power quantity is higher than the reference power quantity or the power quantity demand, through the first and second power quantity comparison steps.