US 12,021,405 B2
Electricity power storage and distribution method, device and system
Wu Wen, Zhuhai (CN); Shugong Nan, Zhuhai (CN); Lei Li, Zhuhai (CN); Shiyong Jiang, Zhuhai (CN); and Zhigang Zhao, Zhuhai (CN)
Assigned to GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI, Zhuhai (CN)
Filed by GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI, Zhuhai (CN)
Filed on May 29, 2021, as Appl. No. 17/334,707.
Application 17/334,707 is a continuation of application No. PCT/CN2019/095526, filed on Jul. 11, 2019.
Claims priority of application No. 201810858698.9 (CN), filed on Jul. 31, 2018.
Prior Publication US 2021/0288514 A1, Sep. 16, 2021
Int. Cl. H02J 7/00 (2006.01)
CPC H02J 7/007182 (2020.01) [H02J 7/0068 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A direct current power distribution method, being applied to a direct current power distribution system, comprising:
determining working modes of the direct current power distribution system;
correspondingly obtaining, under different working modes, working parameters of the direct current power distribution system; and
regulating operation of the direct current power distribution system according to the working parameters to achieve an electric energy balance of a power consumption side, a power generation side of a power grid, and an energy storage side of the direct current power distribution system,
wherein the regulating operation of the direct current power distribution system according to the working parameters comprises: regulating operation of a direct current frequency conversion cabinet, an intelligent converter and an energy storage device in the direct current power distribution system according to the working parameters;
the determining working modes of the direct current power distribution system comprises: determining the working modes comprising an intelligent converter priority output power mode and an intelligent converter constant power output mode; and
the correspondingly obtaining, under different working modes, working parameters of the direct current power distribution system comprises: obtaining, in the intelligent converter priority output power mode, output power of the intelligent converter and a state of charge (SoC) value of the energy storage device; and obtaining, in the intelligent converter constant power output mode, a frequency change of the direct current frequency conversion cabinet, the output power of the intelligent converter and the SoC value of the energy storage device.