US 12,244,145 B2
Power management system, power management server, and power management method
Tamaki Ozawa, Toyota (JP); Toru Nakamura, Toyota (JP); Akinori Morishima, Naka-gun (JP); Yusuke Horii, Nagoya (JP); and Wataru Matsumura, Ichihara (JP)
Assigned to TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed by TOYOTA JIDOSHA KABUSHIKI KAISHA, Toyota (JP)
Filed on Aug. 11, 2022, as Appl. No. 17/818,991.
Claims priority of application No. 2021-136118 (JP), filed on Aug. 24, 2021.
Prior Publication US 2023/0060964 A1, Mar. 2, 2023
Int. Cl. H02J 3/00 (2006.01); G05B 19/042 (2006.01); H02J 3/32 (2006.01); H02J 7/00 (2006.01)
CPC H02J 3/004 (2020.01) [G05B 19/042 (2013.01); H02J 3/32 (2013.01); H02J 7/0048 (2020.01); H02J 7/00712 (2020.01); G05B 2219/2639 (2013.01); H02J 2300/24 (2020.01)] 6 Claims
OG exemplary drawing
 
1. A power management system that manages power of a power network installed in a predetermined area, the power management system comprising:
a photovoltaic power generator installed in the predetermined area and connected to the power network;
an energy storage device configured to be connected to the power network; and
a server configured to
acquire a predicted value of solar radiation at a prediction time at a point where the photovoltaic power generator is installed,
calculate a predicted value of power generated by the photovoltaic power generator at the prediction time by using the predicted value of solar radiation,
set a target range of a state of charge (SOC) of the energy storage device by using the predicted value, and control the SOC in such a way that the SOC falls within the target range by the prediction time, and
set the target range to a wider range when reliability of the predicted value is low than when the reliability of the predicted value is high.