Field control device and high-voltage system having a field control device

Abstract

A field control device for a high-voltage system includes a shielding element for field control, which can be connected to an electrical conductor of the high-voltage system in an electrically conductive manner and, when connected to the conductor, at least partly delimits a weak-electric-field spatial region. A cooling body, which can be connected to the electrical conductor in a thermally conductive manner and which is disposed within the weak-field spatial region, has an outer surface area which is greater than an outer surface area of the shielding element. A high-voltage system having the field control device is also provided.

Claims

1. A field control device for a high-voltage system having an electrical conductor, the field control device comprising: a shielding element for field control, said shielding element configured to be electrically conductively connected to the electrical conductor of the high-voltage system, said shielding element at least partly delimiting a spatial region having a weak electric field upon said shielding element being connected to the electrical conductor of the high-voltage system and said shielding element having an outer surface area; and a cooling body configured to be connected in a heat-conducting manner to the electrical conductor of the high-voltage system, said cooling body being disposed within said weak-field spatial region and said cooling body having an outer surface area being greater than said outer surface area of the shielding element.

2. The field control device according to claim 1, wherein said cooling body includes a ribbed structure increasing a size of said outer surface area of said cooling body.

3. The field control device according to claim 1, wherein said cooling body is a passive cooling body.

4. The field control device according to claim 1, wherein said cooling body includes a reflecting outer surface.

5. The field control device according to claim 1, which further comprises at least one heat-pipe element being connected in a heat-conducting manner to said shielding element and being configured to be connected in a heat-conducting manner to the electrical conductor of the high-voltage system.

6. The field control device according to claim 1, wherein said shielding element has at least one corona ring including a shielding ring and supporting elements connecting said shielding ring to the high-voltage system.

7. The field control device according to claim 6, wherein at least one of said supporting elements includes a heat-pipe element.

8. A high-voltage system, comprising: an electrical conductor of the high-voltage system; and a field control device including a shielding element for field control; said shielding element configured to be electrically conductively connected to said electrical conductor, said shielding element at least partly delimiting a spatial region having a weak electric field upon said shielding element being connected to said conductor and said shielding element having outer an surface area; said field control device including a cooling body configured to be connected in a heat-conducting manner to the electrical conductor, said cooling body being disposed within said weak-field spatial region and said cooling body having an outer surface area being greater than said outer surface area of said shielding element.

Description

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING

(1) The invention is further explained below with reference to exemplary embodiments illustrated in FIGS. 1 and 2.

(2) FIG. 1 illustrates a schematic view of an exemplary embodiment of a field control device in accordance with the invention.

(3) FIG. 2 illustrates a schematic view of an exemplary embodiment of a high-voltage system in accordance with the invention.

DESCRIPTION OF THE INVENTION

(4) An exemplary embodiment of a field control device 1 in accordance with the invention is illustrated in detail in FIG. 1. The field control device 1 comprises a first shielding element 2 in the form of a corona ring and also a second shielding element 3 that is likewise in the form of a corona ring. The first shielding element 2 is connected by supporting elements 4, 5, in a mechanical and electrically conductive manner to a fastening element 6 for fastening to a busbar of a high-voltage system. Heat-pipe elements 4, 5 are respectively disposed within the supporting elements 4, 5. Consequently, when it is connected to the busbar, the first shielding element 2 is on the same electrical potential as the busbar. The same also applies for the second shielding element 3, wherein in this case the struts are not visible in the illustration in FIG. 1.

(5) The first and the second shielding element 2, 3 delimit a spatial region that is essentially free of the electric field. A cooling body 7 is arranged in this field-free or weak-field spatial region, wherein the cooling body 7 is connected to the busbar in an electrical and heat-conducting manner.

(6) The cooling body 7 comprises ribs 8 that are arranged parallel to one another and are connected to one another and in the form of planar plates said ribs almost completely fill the weak-field spatial region.

(7) FIG. 2 illustrates a high-voltage system 10 that is a high-voltage switch gear in the present exemplary embodiment. The high-voltage system 10 comprises a first separating unit 11 and a second separating unit 12 that are insulated with respect to the ground potential by means of two supporting insulators 13 or 14 respectively. Electrical conductors 17, 18 are respectively connected between the separating units 11, 12 and the filed control device 15.

(8) The high-voltage system 10 also comprises a field control device 15 that comprises two corona rings 15a and 15b. The two corona rings 15a and 15b delimit a weak-field spatial region in which an additional cooling body 16 is arranged. The cooling body 16 is equipped with cooling ribs with the result that its outer surface area is greatly enlarged with respect to the outer surface area of the corona ring 15a, 15b. This renders it possible to improve the dissipation of heat that is generated when the high-voltage system is being operated.

(9) The cooling body 16 is merely illustrated in a schematic view in FIG. 2. The construction of the cooling body 16 may correspond by way of example to the construction of the cooling body 7 of the field control device 1 shown in FIG. 1.