Electrical network

Patent metadata

Field	Value
Publication number	US-12266489-B2
Application number	US-201917599067-A
Country	US
Kind code	B2
Filing date	Sep 13, 2019
Priority date	Mar 29, 2019
Publication date	Apr 1, 2025
Grant date	Apr 1, 2025

Abstract

An electrical network is equipped with feed-in devices, loads, a distribution grid arranged therebetween, at least one semiconductor switch, and at least one electromechanical switch for separating a feed-in device or a load in the event of a fault. The feed-in devices and loads are arranged in groups which are connected together by a busbar and paired semiconductor switches. Each feed-in device and load can be separated from the grid by an electromechanical switch in the event of a fault, and the individual groups of feed-in devices and loads can be separated from one another by the semiconductor switches in the event of a fault in order to prevent cross currents on the busbar.

First claim

The invention claimed is:

1. An electrical network comprising:
feed-in devices and loads connected to a common busbar, the busbar being directly connected to an AC/DC converter; and
a distribution network arranged between the feed-in devices and the loads, the distribution network including at least one semiconductor switch connected to the busbar and arranged to control current flow on the busbar, and at least one electromechanical switch to isolate one or more of the feed-in devices or one or more of the loads in the event of a fault, wherein
the feed-in devices and loads are arranged in groups of the feed-in devices and loads, which are connected to one another via the busbar and associated semiconductor switches,
each of the feed-in devices and the loads is associated with a separate electromechanical switch from among the at least one electromechanical switch and each of the at least one electromechanical switch is configured to disconnect an associated feed-in device or load from the electrical network in the event of a fault, and
individual groups of the feed-in devices and loads are configured to be disconnected from one another via the associated semiconductor switches in the event of a fault to prevent cross currents on the busbar, wherein,
in the event of a fault, after an electromechanical switch has been triggered, a first group in which the fault has arisen and the electromechanical switch that has been triggered is recharged by a second group without a fault through switching of an associated semiconductor switch, from among the associated semiconductor switches, that is arranged between the first group and the second group.

2. The electrical network as claimed in claim 1 , wherein at least one of the groups of the feed-in devices and loads includes one feed-in device and one load.

3. The electrical network as claimed in claim 2 , wherein the feed-in devices and loads are distributed across the groups of the feed-in devices and loads such that sensitive loads are arranged in an additional group, which is formed as a subgroup in another group.

4. The electrical network as claimed in claim 3 , wherein the additional group is electrically connected to the other group as a subgroup via a semiconductor switch.

5. The electrical network as claimed in claim 1 , wherein at least one of the groups of the feed-in devices and loads includes two feed-in devices and two loads.

6. The electrical network as claimed in claim 5 , wherein the feed-in devices and loads are distributed across the groups such that high availability loads are arranged in groups that have two adjacent groups.

7. The electrical network as claimed in claim 5 , wherein the feed-in devices and loads are distributed across the groups of the feed-in devices and loads such that sensitive loads are arranged in an additional group, which is formed as a subgroup in another group.

8. The electrical network as claimed in claim 7 , wherein the additional group is electrically connected to the other group as a subgroup via a semiconductor switch.

9. The electrical network as claimed in claim 1 , wherein the associated semiconductor switch arranged between the first group and the second group is used as a current limiter during recharging.

10. The electrical network as claimed in claim 9 , wherein a resistor, which is used as a current limiter during recharging, is arranged in the associated semiconductor switch between the first group and the second group.

11. The electrical network as claimed in claim 1 , wherein the feed-in devices and loads are distributed across the groups of the feed-in devices and loads such that each group provides enough energy for the loads of said group by way of the feed-in devices of said group.

12. The electrical network as claimed in claim 1 , wherein the feed-in devices and loads are distributed across the groups of the feed-in devices and loads such that each group provides enough energy to supply adjacent groups by way of the feed-in devices of said group.

13. The electrical network as claimed in claim 1 , wherein the feed-in devices and loads are distributed across the groups such that high availability loads are arranged in groups that have two adjacent groups.

14. The electrical network as claimed in claim 1 , wherein the feed-in devices and loads are distributed across the groups of the feed-in devices and loads such that sensitive loads are arranged in an additional group, which is formed as a subgroup in another group.

15. The electrical network as claimed in claim 14 , wherein the additional group is electrically connected to the other group as a subgroup via a semiconductor switch.

Assignees

• Siemens Ag

Inventors

• Batra Shivansh
• Beckert Thomas
• Hein Michael
• Zhu Yi

Classifications

• H02H7/222

  for switches · CPC title

• H02H9/001

  limiting speed of change of electric quantities, e.g. soft switching on or off (progressive control of electronic switches for eliminating interferences H03K17/16) · CPC title

• H02J1/12

  Parallel operation of DC sources having power converters with further DC sources without power converters · CPC title

• H02H7/1252

  responsive to overvoltage in input or output, e.g. by load dump · CPC title

• H02J1/10 Primary

  Parallel operation of DC sources · CPC title