Electrical network

Patent metadata

Field	Value
Publication number	US-12278477-B2
Application number	US-202017911444-A
Country	US
Kind code	B2
Filing date	Sep 9, 2020
Priority date	Sep 9, 2020
Publication date	Apr 15, 2025
Grant date	Apr 15, 2025

Abstract

An electrical network includes feed-in means, loads, and a distribution network located therebetween which includes at least one dynamic isolator and busbars. The feed-in means and the loads together with associated busbars are disposed in groups which can be electrically interconnected or disconnected by the at least one dynamic isolator. The at least one dynamic isolator monitors the voltage on the busbars adjacent thereto for a voltage difference. In a normal state without a voltage difference, the at least one dynamic isolator electrically disconnects the groups from one another, and in the event of a voltage difference between the busbars adjacent thereto, the at least one dynamic isolator electrically connects the groups to one another.

First claim

The invention claimed is:

1. An electrical network, comprising:
feed-in devices;
loads; and
a distribution network disposed between said feed-in devices and said loads, said distribution network including at least one dynamic isolator and busbars;
said feed-in devices, said loads and said busbars being disposed in groups configured to be electrically connected to one another or disconnected from one another by said at least one dynamic isolator;
said at least one dynamic isolator monitoring voltage on adjacent busbars for a voltage difference;
in a normal state without the voltage difference, said at least one dynamic isolator electrically disconnecting said groups from one another;
upon the voltage difference occurring between adjacent said busbars, said at least one dynamic isolator electrically connecting said groups to one another; and
said at least one dynamic isolator electrically connecting said groups to one another upon the voltage difference being greater than a predefined voltage difference threshold value.

2. An electrical network, comprising:
feed-in devices;
loads; and
a distribution network disposed between said feed-in devices and said loads, said distribution network including at least one dynamic isolator and busbars;
said feed-in devices, said loads and said busbars being disposed in groups configured to be electrically connected to one another or disconnected from one another by said at least one dynamic isolator;
said at least one dynamic isolator monitoring voltage on adjacent busbars for a voltage difference;
in a normal state without the voltage difference, said at least one dynamic isolator electrically disconnecting said groups from one another;
upon the voltage difference occurring between adjacent said busbars, said at least one dynamic isolator electrically connecting said groups to one another; and
upon a voltage difference occurring between said adjacent busbars, said at least one dynamic isolator electrically disconnecting said groups from one another again after connection, upon a fault occurring in one of said adjacent groups.

3. The electrical network according to claim 2 , wherein said at least one dynamic isolator repeatedly determines, in a time interval, a presence of a fault in one of said adjacent groups.

4. The electrical network according to claim 2 , wherein said at least one dynamic isolator assumes a fault in one of said adjacent groups upon a change in the voltage difference between said adjacent busbars exceeding a voltage change threshold value.

5. The electrical network according to claim 2 , wherein said at least one dynamic isolator assumes a fault in one of said adjacent groups upon a change in current through said at least one dynamic isolator exceeding a current change threshold value.

6. An electrical network, comprising:
feed-in devices;
loads; and
a distribution network disposed between said feed-in devices and said loads, said distribution network including at least one dynamic isolator and busbars;
said feed-in devices, said loads and said busbars being disposed in groups configured to be electrically connected to one another or disconnected from one another by said at least one dynamic isolator;
said at least one dynamic isolator monitoring voltage on adjacent busbars for a voltage difference;
in a normal state without the voltage difference, said at least one dynamic isolator electrically disconnecting said groups from one another;
upon the voltage difference occurring between adjacent said busbars, said at least one dynamic isolator electrically connecting said groups to one another; and
said at least one dynamic isolator disconnecting said groups provided that no voltage difference arises across said at least one dynamic isolator being associated with a flow of power through said at least one dynamic isolator and an imbalance between said feed-in devices and said loads in a group.

7. An electrical network, comprising:
feed-in devices;
loads; and
a distribution network disposed between said feed-in devices and said loads, said distribution network including at least one dynamic isolator and busbars;
said feed-in devices, said loads and said busbars being disposed in groups configured to be electrically connected to one another or disconnected from one another by said at least one dynamic isolator;
said at least one dynamic isolator monitoring voltage on adjacent busbars for a voltage difference:
in a normal state without the voltage difference, said at least one dynamic isolator electrically disconnecting said groups from one another;
upon the voltage difference occurring between adjacent said busbars, said at least one dynamic isolator electrically connecting said groups to one another; and
said at least one dynamic isolator monitoring current for overload and said at least one dynamic isolator being protected in an event of an overload.

8. The electrical network according to claim 1 , wherein the electrical network is operated with direct current or alternating current.

9. An electrical network, comprising:
feed-in devices;
loads; and
a distribution network disposed between said feed-in devices and said loads, said distribution network including at least one dynamic isolator and busbars;
said feed-in devices, said loads and said busbars being disposed in groups configured to be electrically connected to one another or disconnected from one another by said at least one dynamic isolator;
said at least one dynamic isolator monitoring voltage on adjacent busbars for a voltage difference;
in a normal state without the voltage difference, said at least one dynamic isolator electrically disconnecting said groups from one another;
upon the voltage difference occurring between adjacent said busbars, said at least one dynamic isolator electrically connecting said groups to one another; and
said at least one dynamic isolator including two anti-parallel solid-state transformers or active front ends.

10. The electrical network according to claim 1 , which further comprises at least one electromechanical switch configured to disconnect one of said feed-in devices or one of said loads in an event of a fault.

Assignees

• Siemens Ag

Inventors

• Batra Shivansh
• Beckert Thomas

Classifications

• H02J2101/24

  Photovoltaics · CPC title

• H02H1/0007

  concerning the detecting means (in general G01R or other subclasses of G01; reed switches H01H71/2445) · CPC title

• Y02E10/56

  Power conversion systems, e.g. maximum power point trackers · CPC title

• H02H3/36 Primary

  involving comparison of the voltage or current values at corresponding points of different systems, e.g. of parallel feeder systems · CPC title

• H02J3/381

  Dispersed generators · CPC title