US 12,237,685 B2
Power management system, server, and power supply and demand adjustment
Shigetaka Hamada, Nisshin (JP); Haruka Hirose, Toyota (JP); Yusuke Horii, Nagoya (JP); Toru Nakamura, Toyota (JP); and Takaaki Sano, Izumi (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Jan. 10, 2022, as Appl. No. 17/571,684.
Claims priority of application No. 2021-011919 (JP), filed on Jan. 28, 2021.
Prior Publication US 2022/0239108 A1, Jul. 28, 2022
Int. Cl. H02J 3/14 (2006.01); G05B 15/02 (2006.01); H02J 3/28 (2006.01); H02J 3/38 (2006.01); H02J 13/00 (2006.01)
CPC H02J 3/381 (2013.01) [G05B 15/02 (2013.01); H02J 3/144 (2020.01); H02J 3/28 (2013.01); H02J 13/00004 (2020.01); H02J 2300/24 (2020.01); H02J 2310/12 (2020.01); H02J 2310/14 (2020.01)] 9 Claims
OG exemplary drawing
 
1. A power management system that manages power supply and demand in a power grid, the power management system comprising:
a plurality of power adjustment resources used to adjust supply power from a power system to the power grid; and
a controller that outputs a demand response request to the plurality of power adjustment resources such that balancing is achieved, the balancing being control for matching an actual amount of power expected to be used in a prescribed time period with a planned amount of power to be used by the end of the prescribed time period, wherein
the plurality of power adjustment resources include:
a power-storage-type distributed energy resource (DER) that stores the supply power in an energy form of at least one of electricity, heat and gas fuel; and
a consumption-type DER that consumes the supply power by at least one of air conditioning and lighting, and
in a case where the controller determines in the middle of the prescribed time period that the actual amount of power expected to be used in the prescribed time period will exceed the planned amount of power to be used by the end of the prescribed time period, the controller performs the following steps:
(a) when the excess of the actual amount of power expected to be used in the prescribed time period can be eliminated by decreasing storage of the supply power by the power-storage-type DER, the controller outputs, to the power-storage-type DER, the demand response request for decreasing storage of the supply power in comparison with a case where the controller determines that the actual amount of power expected to be used in the prescribed time period will not exceed the planned amount of power to be used by the end of the prescribed time period, but the controller does not output, to the consumption-type DER, the demand response request for decreasing consumption of the supply power in comparison with the case where the controller determines that the actual amount of power expected to be used in the prescribed time period will not exceed the planned amount of power to be used by the end of the prescribed time period, and
(b) when the excess of the actual amount of power expected to be used in the prescribed time period cannot be eliminated only by decreasing storage of the supply power by the power-storage-type DER, the controller outputs, to the power-storage-type DER, the demand response request for decreasing storage of the supply power in comparison with the case where the controller determines that the actual amount of power expected to be used in the prescribed time period will not exceed the planned amount of power to be used by the end of the prescribed time period, and also outputs, to the consumption-type DER, the demand response request for decreasing consumption of the supply power in comparison with the case where the controller determines that the actual amount of power expected to be used in the prescribed time period will not exceed the planned amount of power to be used by the end of the prescribed time period.