US 12,003,104 B2
Energy supply system having a coupling device
Claus Allert, Kaufungen (DE)
Assigned to SMA Solar Technology AG, Niestetal (DE)
Filed by SMA Solar Technology AG, Niestetal (DE)
Filed on Jan. 26, 2022, as Appl. No. 17/584,982.
Application 17/584,982 is a continuation in part of application No. PCT/EP2020/071454, filed on Jul. 30, 2020.
Claims priority of application No. 10 2019 121 241.3 (DE), filed on Aug. 6, 2019.
Prior Publication US 2022/0149620 A1, May 12, 2022
Int. Cl. H02J 3/00 (2006.01); H02J 3/32 (2006.01); H02J 3/38 (2006.01); H02J 9/06 (2006.01)
CPC H02J 3/0073 (2020.01) [H02J 3/32 (2013.01); H02J 3/388 (2020.01); H02J 9/062 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A local energy supply system with a grid transfer point for connecting to an energy supply grid, comprising:
a first transmission line configured to transmit electrical energy from the grid transfer point to a first terminal that is configured to connect to an arrangement of consumers, wherein a first disconnector is located in the first transmission line between the grid transfer point and the first terminal,
a second transmission line configured to transmit electrical energy between the grid transfer point and a second terminal that is configured to connect to an arrangement of energy stores, wherein a second disconnector is located in the second transmission line between the grid transfer point and the second terminal,
a coupling device electrically connecting the first terminal and the second terminal, wherein:
the coupling device comprises a first switch and a second switch connected together in series, and a coupling element arranged between the series-connected first and second switches, wherein the coupling element comprises at least one element from the following group:
a grounding apparatus,
a phase connecting apparatus configured to connect multiple phase conductors of the first transmission line to a single phase conductor of the second transmission line,
a connecting apparatus to a diesel generator, and
an apparatus configured to generate a neutral conductor potential,
a central control unit configured to:
close the first disconnector and the second disconnector in a normal operating mode, and open the first switch and the second switch of the coupling device in the normal operating mode, and
open the first disconnector and the second disconnector in a backup operating mode, and close the first switch and the second switch of the coupling device in the backup operating mode, thereby activating the coupling element.