US 12,230,957 B2
Electric power network and method of changing electric power network
Masahiro Rikiso, Tokyo (JP); Sumio Kachi, Tokyo (JP); Hideto Nakamura, Tokyo (JP); and Kengo Nakao, Tokyo (JP)
Assigned to FURUKAWA ELECTRIC CO., LTD., Tokyo (JP)
Filed by FURUKAWA ELECTRIC CO., LTD., Tokyo (JP)
Filed on May 31, 2022, as Appl. No. 17/804,703.
Application 17/804,703 is a continuation of application No. PCT/JP2020/043964, filed on Nov. 26, 2020.
Claims priority of application No. 2019-218832 (JP), filed on Dec. 3, 2019.
Prior Publication US 2022/0294214 A1, Sep. 15, 2022
Int. Cl. H02J 1/10 (2006.01); H02J 7/00 (2006.01); H02J 7/34 (2006.01)
CPC H02J 1/10 (2013.01) [H02J 7/0013 (2013.01); H02J 7/34 (2013.01); H02J 2207/20 (2020.01)] 18 Claims
OG exemplary drawing
 
1. An electric power network comprising:
a plurality of power routers each including a plurality of power ports, each power port being capable of inputting and outputting direct-current power, each power router being configured to convert electric power input from any of the power ports of the power router and to output the converted electric power from at least one of remaining power ports of the power router;
a plurality of interconnection lines configured to connect the power routers in a grid manner via the power ports; and
an electric power apparatus configured to consume or supply electric power, the electric power apparatus being connected to a power port that is included in at least one of the power routers and that is not connected to any of the interconnection lines, wherein
at least one of the power ports of each of the power routers is set as a dependent port for which characteristics of direct-current power to be input or output are not controlled,
the plurality of power routers include
at least one first power router including at least one dependent port connected to a power storage apparatus that is able to store and discharge direct-current power, and
at least one second power router that is unconnected to a power storage apparatus that is able to store and discharge direct-current power, and
the at least one second power router includes a dependent port connected to a first constant voltage control port that is set as a port for which voltage of direct-current power to be input or output is controlled constant in a predetermined range among the power ports of another power router of the plurality of power routers.