Patent ID: 9698601
Date: 2017-07-04
CPC Classifications: G05F,H02J,Y02E

Claim:
1. A voltage control apparatus that adjusts voltages at one or more voltage measuring points provided in a distribution system to prevent the voltages from deviating from a predetermined voltage range by controlling power adjustment apparatuses, the voltage control apparatus comprising: a voltage value obtainment unit configured to obtain voltage values at the one or more voltage measuring points including a first voltage measuring point connected to a corresponding one of the power adjustment apparatuses; an impedance obtainment unit configured to obtain a system impedance from a distribution substation to each of the power adjustment apparatuses in the distribution system; a control variable calculating unit configured to calculate a control variable including at least one of (i) an allowable upper limit of a voltage value at the first voltage measuring point and (ii) an allowable lower limit of the voltage value at the first voltage measuring point, based on the voltage values at the one or more voltage measuring points and the system impedances; and a notification unit configured to notify the power adjustment apparatuses of the calculated control variable.