WO2003017291A1 - Traversee haute-tension - Google Patents

Traversee haute-tension Download PDF

Info

Publication number
WO2003017291A1
WO2003017291A1 PCT/CH2002/000393 CH0200393W WO03017291A1 WO 2003017291 A1 WO2003017291 A1 WO 2003017291A1 CH 0200393 W CH0200393 W CH 0200393W WO 03017291 A1 WO03017291 A1 WO 03017291A1
Authority
WO
WIPO (PCT)
Prior art keywords
open
insulation
support body
guided
lead
Prior art date
Application number
PCT/CH2002/000393
Other languages
German (de)
English (en)
Inventor
Stefan Gisy
Original Assignee
Micafil Ag
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Micafil Ag filed Critical Micafil Ag
Priority to EP02742635A priority Critical patent/EP1417689B1/fr
Priority to DE50213331T priority patent/DE50213331D1/de
Publication of WO2003017291A1 publication Critical patent/WO2003017291A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/26—Lead-in insulators; Lead-through insulators
    • H01B17/28—Capacitor type

Definitions

  • the invention is based on a high-voltage bushing according to the preamble of patent claim 1.
  • a high-voltage bushing contains a support body which is designed to be cylindrically symmetrical and can be subjected to high voltage, a feed-through foot which can be grounded, a field-controlling insulating body which is held on the support body and which is held on the feed-through foot, and an outdoor insulation molded onto the insulating body.
  • a high-voltage current conductor is led into the open air through a housing wall that can be grounded from the inside of an apparatus, for example a transformer or a switch.
  • the invention relates to a high-voltage bushing, as described, for example, in FIG. 4 of US Pat. No. 4,123,618 A.
  • the bushing described is designed in the manner of a column and contains a bushing foot which is designed as a mounting flange 25 and which comprises an opening in a grounded housing of an electrical apparatus, in particular a transformer or a high-voltage switch, and can be fastened to the housing.
  • the mounting flange 25 is held on a field-controlling, cylinder-symmetrical insulating body 55.
  • the insulating body 55 is designed as a capacitor bushing and is in turn fastened on the lateral surface of a current conductor 23 which extends along the column axis and can be guided to high voltage potential and which serves as a power connection for the bushing.
  • the field-controlling insulating body is cast in a gap-free manner by an open-air insulation 57 on the basis of an elastic, weather-resistant material.
  • the open-air insulation is molded onto the current conductor 23 from the outer surface of the field-controlling insulating body 55 via an adjoining end face, so that the field-controlling insulating body 55 is completely encased by the open-air insulation.
  • the invention achieves the object of specifying a high-voltage bushing of the type mentioned at the outset, which is distinguished by a simple structure and great operational reliability.
  • an annular section of the outer surface of the support body which is guided in air and extends in the circumferential direction is formed as a sealing surface, and an annular groove which is guided in the circumferential direction and filled with material of the open-air insulation is formed in a further annular section of the outer surface adjoining the sealing surface.
  • the sealing surface serves to support a sealing ring of a casting mold in the manufacture of the high-voltage bushing according to the invention.
  • the outdoor insulation can thus be poured onto the outer surface of the support body in a simple manner during the manufacture of the high-voltage bushing.
  • the edge of the open-air insulation is particularly well fixed and secured against damage if the annular groove on its side facing away from the feed-through foot is only filled up to the flank edge with material of the open-air insulation, so that the lateral surface formed in this way and the subsequent formed as a sealing surface first portion of the lateral surface of the support body merge into each other.
  • Fig. 1 is a side view of a high-voltage bushing according to the invention, partially cut in the direction of an axis, and
  • Fig. 2 is a plan view of an enlarged portion of the high-voltage bushing according to Fig.1 during manufacture.
  • the high-voltage bushing shown in Fig. 1 is designed in the manner of a column and contains a metal support body 2, which is formed cylindrically symmetrically along an axis 1 and can be subjected to high voltage, a metal feed-through foot 3 that can be grounded, and one supported and supported on the feed-through foot 3 with a shoulder 4 the field-controlling insulating body 5 held in the support body 2, which is preferably designed as a capacitor bushing.
  • the support body 2 can be designed as a tube or as a solid bolt. In its design as a tube, it not only carries the insulating body 5, but also serves to receive a high-voltage cable end, which is fastened in an electrically conductive manner with a cable bolt at the upper end of the supporting body. If the support body is designed as a bolt, this bolt can carry the current otherwise flowing in the cable end.
  • the insulating body has an upper, predominantly cylindrical, and a lower, partially conical section.
  • the cylindrical section is arranged in the interior of the outdoor insulation 7 and serves to control the electric field of the current flowing during operation of the bushing in the area of the outdoor insulation 7 and the bushing foot 3.
  • the section, which is partially conical, is in operation with a bushing the feed-through foot 3 electrically connected housing, for example a transformer, arranged and controls the electrical field of the current flowing in the bushing inside the housing.
  • the two ends of the support body 2 are led out of the interior of the bushing.
  • the support body is designed as a tube
  • the cable bolt of the current conductor is inserted through the lower end of the support body 2, cable bolts and current conductor are pulled through the tube and the cable bolt is finally fixed to the upper end of the tube with the aid of a holding device screwed to an external thread 9 ,
  • the upper end region of the support body 2 facing away from the bushing foot is first formed, as is indicated in FIG.
  • This end region is cylindrical and has three annular sections lying one above the other on its lateral surface.
  • An annular groove 10 is formed in the bottom section and the external thread 9 in the top section.
  • the intermediate section is designed as a sealing surface 11.
  • the end region can be manufactured before or after the application of the insulating body 5 to the supporting body 2.
  • the feed-through foot 3 is pulled from above onto the insulating body fastened on the support body 2 and supported on the shoulder 4. Then the lead-through is assembled in a two-part mold arranged. The interior of the casting mold is sealed off on the outside on a sealing surface provided on the feed-through foot 3 and on the sealing surface 11 with the aid of sealing rings in a vacuum and pressure-resistant manner. A part 12 of the mold with a sealing ring 13 can be seen in Fig.2.
  • the open-air insulation formed by the outer surface 6 via the end face 8 of the insulating body 5 onto the end region of the supporting body 2 is achieved. Because the insulation is now molded directly onto the support body, the bushing head provided in the prior art can be dispensed with and at the same time a long creepage distance between the upper end region of the support body 2 and the bushing foot 3 is achieved.
  • the part 12 of the casting mold is expediently designed in such a way that a metal lead-through head otherwise present in the prior art is simulated by the outdoor insulation.
  • the edge of the outdoor insulation 7 facing away from the feedthrough 3 is fixed in a manner fixed against displacement and the interior of the high-voltage bushing is sealed off from the outside.
  • the annular groove 10 is filled on its side facing away from the feed-through foot 3 up to the flank edge 14 with material of the outdoor insulation.
  • the outer surface of the outdoor insulation 7 merges flush into the sealing surface 11.
  • the edge of the outdoor insulation 7 is then not only set particularly well because of the annular groove 10 but at the same time also secured against damage.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulators (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Details Of Television Scanning (AREA)
  • Electrostatic Separation (AREA)
  • Motor Or Generator Frames (AREA)

Abstract

La traversée haute-tension de l'invention présente un corps de support (2) ayant une symétrie de cylindre et pouvant être exposé à une haute-tension, ainsi qu'un montant de traversée pouvant être relié à un potentiel de terre, un corps isolant de commande de champ prenant appui sur le montant de traversée et maintenu sur le corps de support (2), et une isolation d'extérieur mise en place sur la surface périphérique du corps isolant. L'isolation d'extérieur est formée, sur le côté de la surface périphérique, opposé au montant de traversée, par une surface frontale adjacente du corps isolant de commande de champ sur le corps de support (2). Une partie annulaire de la surface périphérique du corps de support (2), s'étendant à l'extérieur en direction périphérique, se présente sous la forme d'une surface d'étanchéité (11) contre laquelle est formée une rainure annulaire (10) qui s'étend en direction périphérique et est remplie du matériau de l'isolation d'extérieur, dans une partie annulaire de la surface périphérique, adjacente à la surface d'étanchéité. Comme la surface d'étanchéité sert d'appui à l'anneau d'étanchéité d'un moule, au cours de la réalisation de la traversée haute-tension, l'isolation d'extérieur peut être coulée de manière particulièrement simple sur la surface périphérique du corps de support (2). Le bord de l'isolation d'extérieur est fixé pour résister à tout déplacement, par l'intermédiaire de la rainure annulaire (10) remplie du matériau de l'isolation d'extérieur, et l'intérieur de la traversée haute-tension est isolé efficacement de l'extérieur.
PCT/CH2002/000393 2001-08-13 2002-07-16 Traversee haute-tension WO2003017291A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP02742635A EP1417689B1 (fr) 2001-08-13 2002-07-16 Traversee haute-tension
DE50213331T DE50213331D1 (de) 2001-08-13 2002-07-16 Hochspannungsdurchführung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP01810776.3 2001-08-13
EP01810776A EP1284483A1 (fr) 2001-08-13 2001-08-13 Traversée à haute tension

Publications (1)

Publication Number Publication Date
WO2003017291A1 true WO2003017291A1 (fr) 2003-02-27

Family

ID=8184084

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH2002/000393 WO2003017291A1 (fr) 2001-08-13 2002-07-16 Traversee haute-tension

Country Status (4)

Country Link
EP (2) EP1284483A1 (fr)
AT (1) ATE424615T1 (fr)
DE (1) DE50213331D1 (fr)
WO (1) WO2003017291A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2053616A1 (fr) * 2007-10-26 2009-04-29 ABB Research Ltd. Garniture d'étanchéité d'extérieur haute tension
GB2466441A (en) * 2008-12-18 2010-06-23 Tyco Electronics Ltd Uk Electrical current feed-through bush with air gap
EP2515313A1 (fr) 2011-04-21 2012-10-24 ABB Technology AG Ligne haute tension
WO2012163561A1 (fr) 2011-05-27 2012-12-06 Abb Technology Ag Composant électrique pour installation haute tension

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257501A (en) * 1961-04-20 1966-06-21 Westinghouse Electric Corp Self-cleaning electrical insulator constructions
US4123618A (en) * 1976-06-09 1978-10-31 Westinghouse Electric Corp. Vapor-cooled terminal-bushings for oil-type circuit-interrupters

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257501A (en) * 1961-04-20 1966-06-21 Westinghouse Electric Corp Self-cleaning electrical insulator constructions
US4123618A (en) * 1976-06-09 1978-10-31 Westinghouse Electric Corp. Vapor-cooled terminal-bushings for oil-type circuit-interrupters

Also Published As

Publication number Publication date
EP1417689B1 (fr) 2009-03-04
DE50213331D1 (de) 2009-04-16
EP1417689A1 (fr) 2004-05-12
EP1284483A1 (fr) 2003-02-19
ATE424615T1 (de) 2009-03-15

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