Patent ID: 9612584
Date: 2017-04-04
CPC Classifications: G05B,H02J,Y02E

Claim:
1. An electric power grid control system comprising: distributed generators that are connected to an electric power grid; voltage measurement units that measure voltage of connection points of said distributed generators to said electric power grid; a centralized control device that, when voltage at a said connection point deviates from a predetermined acceptable range, allocates a voltage adjustment amount for returning the voltage to said acceptable range to all said distributed generators within a predetermined group that has been set in advance; and distribution processing devices that cause said distributed generators to adjust voltage at said connection points in accordance with said voltage adjustment amount that was allocated from said centralized control device, wherein said group is formed of consumers that are connected to a single pole transformer and provided with said distributed generators, said voltage measurement units, and said distribution processing devices, said distribution processing devices adjust voltage at said connection points by means of active power or reactive power that is caused to flow back to said electric power grid from said distributed generators, and said distribution processing devices make the ratio between the voltage adjustment amount by said reactive power and the voltage adjustment amount by said active power 1/(dV/dP):1/(dV/dQ), where V is the voltage at said connection points, P is said active power amount, and Q is said reactive power amount.