| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an automatic power factor control apparatus for controlling insertion and separation of a phase advance capacitor while reducing a calculation load of an apparatus.SOLUTION: An automatic power factor control apparatus 1 for controlling insertion and separation of phase advance capacitors 3, 3 comprises: a power receiving point current threshold calculation unit 8 for calculating a threshold of current at a power receiving point from a load power factor and phase advance capacitor capacitance and the like; an effective value calculation unit 11 for calculating an effective value of a current signal at the power receiving point; and an insertion/separation determination control unit 12 for determining and controlling insertion and separation of the phase advance capacitors. The power receiving point current threshold calculation unit 8 calculates a threshold of power receiving point current and stores the threshold; and the insertion/separation determination control unit 12 compares the effective value of the current signal at the power receiving point calculated by the effective value calculation unit 11 with the power receiving point current threshold, and determines and controls insertion and separation of the phase advance capacitors 3.</p> |
