Electrical energy transmission device and life cycle management

Patent metadata

Field	Value
Publication number	US-11509121-B2
Application number	US-201716326424-A
Country	US
Kind code	B2
Filing date	Jul 19, 2017
Priority date	Aug 19, 2016
Publication date	Nov 22, 2022
Grant date	Nov 22, 2022

Abstract

An electrical energy transmission device for the transmission of electrical energy has a fluid-holding chamber. An electrically insulating fluid is contained in the fluid-holding chamber. The electrically insulating fluid is, at least in part, air-drawn from the surroundings of the electrical energy transmission device. The insulating fluid is used for insulating phase conductors in order to avoid short circuit conditions.

First claim

The invention claimed is:

1. An electrical energy transmission device, comprising:
a maintenance unit configured for filtering atmospheric air which is drawn from surroundings of the electrical energy transmission device;
a fluid-holding chamber for enclosing an electrically insulating fluid, the electrically insulating fluid being formed at least partially from filtered atmospheric air from the maintenance unit; and
the electrically insulating fluid having the characteristics of having been filled into said fluid-holding chamber subsequent to an evacuation of said fluid-holding chamber.

2. The electrical energy transmission device according to claim 1 , wherein the atmospheric air is filtered before filling of the electrically insulating fluid into the fluid-holding chamber.

3. The electrical energy transmission device according to claim 1 , wherein the electrically insulating fluid is discharged to the surroundings via the maintenance unit.

4. The electrical energy transmission device according to claim 1 , wherein the atmospheric air is purified in the maintenance unit.

5. The electrical energy transmission device according to claim 1 , wherein the atmospheric air is purified in the maintenance unit before filling of the electrically insulating fluid into the fluid-holding chamber.

6. The electrical energy transmission device according to claim 1 , further comprising:
an outlet valve arranged between the maintenance unit and the fluid holding chamber;
the outlet valve being configured to distribute the filtered atmospheric air from the maintenance unit to the fluid holding chamber; and
the outlet valve being configured to discharge the electrically insulating fluid from the fluid holding chamber to the surroundings via the maintenance unit.

7. A method of operating a life cycle management system for an electrically insulating fluid disposed in a fluid-holding chamber of an electrical energy transmission device for purposes of electrical insulation, which comprises the steps of:
drawing in atmospheric air from surroundings;
filtering the drawn in air in a maintenance unit of the electrical energy transmission device;
evacuating the fluid-holding chamber; and
subsequently introducing the filtered air into the fluid-holding chamber as an electrically insulating fluid.

8. The method according to claim 7 , which further comprises pressurizing the electrically insulating fluid at a positive pressure.

9. The method according to claim 7 , which further comprises a buffer storing the filtered air in a storage volume.

10. The method according to claim 7 , which further comprises discharging the electrically insulating fluid situated in the fluid-holding chamber to the surroundings.

11. The life method according to claim 10 , which further comprises treating the electrically insulating fluid via the maintenance unit before the electrically insulating fluid is output to the surroundings.

12. The life method according to claim 10 , which further comprises purifying the electrically insulating fluid before the electrically insulating fluid is output to the surroundings.

13. The method according to claim 7 , which further comprises a buffer storing the drawn in filtered atmospheric air in a storage volume.

Assignees

• Siemens Energy Global Gmbh & Co Kg
• Siemens Ag

Inventors

• Bauer Sascha
• Lutz Bernhard
• Ehrlich Frank

Classifications

• F17C5/06

  for filling with compressed gases · CPC title

• H02B3/00 Primary

  Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear · CPC title

• H02B13/035 Primary

  Gas-insulated switchgear · CPC title

• H01H33/57

  Recuperation of liquid or gas · CPC title

• H02B13/055

  Features relating to the gas · CPC title