Patent ID: 9659332
Date: 2017-05-23
CPC Classifications: G05B,G06Q,H02J,Y02B,Y02E,Y04S

Claim:
1. A grid controller having a hardware processor configured for use in a smart grid system in which at least one power generating unit and a plurality of power storage units are connected to each other and to an external power system in such a manner as to allow the power generating unit and the plurality of power storage units to transmit electric power to and receive electric power from each other and the external power system, each power storage unit including a power storage part storing electric power and a controller performing charge-discharge control of the power storage part, wherein the grid controller is communicably connected to the controllers of the respective power storage units, the grid controller: obtains transmission power Pall transmitted from the smart grid system to the external power system, the transmission power Pall being a sum of electric power generated by the power generating unit, electric power consumed by loads in the smart grid system, and electric power charged into and discharged from the power storage units; calculates differential power ΔP between the transmission power Pall and a smoothing operation output Pall′, the smoothing operation output Pall′ being obtained by performing smoothing operation on the transmission power Pall by using a smoothing filter; and performs control of smoothing the transmission power Pall by performing allocation of the differential power ΔP of the transmission power Pall in accordance with a charge-discharge state of each of the power storage parts of the plurality of power storage units.