EP0032690A2 - Traversée haute-tension isolée aux feuilles comportant des insertions de contrôle du potentiel - Google Patents

Traversée haute-tension isolée aux feuilles comportant des insertions de contrôle du potentiel Download PDF

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Publication number
EP0032690A2
EP0032690A2 EP81100119A EP81100119A EP0032690A2 EP 0032690 A2 EP0032690 A2 EP 0032690A2 EP 81100119 A EP81100119 A EP 81100119A EP 81100119 A EP81100119 A EP 81100119A EP 0032690 A2 EP0032690 A2 EP 0032690A2
Authority
EP
European Patent Office
Prior art keywords
potential control
voltage bushing
embossed
insulating
foils
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
EP81100119A
Other languages
German (de)
English (en)
Other versions
EP0032690B1 (fr
EP0032690A3 (en
Inventor
Günther Matthäus
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6092430&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0032690(A2) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG, Siemens Corp filed Critical Siemens AG
Priority to AT81100119T priority Critical patent/ATE5034T1/de
Publication of EP0032690A2 publication Critical patent/EP0032690A2/fr
Publication of EP0032690A3 publication Critical patent/EP0032690A3/de
Application granted granted Critical
Publication of EP0032690B1 publication Critical patent/EP0032690B1/fr
Expired legal-status Critical Current

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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 relates to a high-voltage bushing with conductor parts lying at different electrical potentials and with an insulating body arranged between these conductor parts, which is wound from insulating foils, contains thin electrically conductive potential control inserts and is impregnated with a special insulating medium.
  • a high-voltage bushing is known from the publication "PROC. IEE", vol. 112, Jan. 1965, pages 89 to 102.
  • connection points of electrical devices with high operating voltages of, for example, 100 kV and higher high-voltage parts of these devices must be passed through parts which are at ground potential in such a way that arcing between these parts is avoided with certainty.
  • a corresponding connection point is, for example, the end closure of a high-voltage cable or the connection of a high-voltage transformer.
  • Corresponding insulated bushings may also be required for converters and switchgear.
  • the electrically conductive parts in the high-voltage bushings which are at high-voltage potential, are surrounded by special bushing insulators, whose Geometric dimensions are determined, among other things, by the required electrical strength values.
  • the bushing insulator known from the mentioned reference “PROC. IEE” is wound from flexible plastic films.
  • thin metallic foils are wrapped in this insulator as so-called electrically conductive potential control inserts concentrically with one another and insulated from one another. These inserts can be used to control the voltage distribution via the bushing insulator and thus to increase the partial discharge and surge voltage resistance (see e.g. P.Böning: Little Textbook of Electrical Strength, Düsseldorf 1955, pages 140 to 142).
  • Gaps and cavities in the known wound bushing insulator should be filled with sulfur hexafluoride (SF 6 ) as the insulating medium, since it is known that the partial discharge field strength in SF 6 is at least twice as high as in air. The air present in the insulator winding must therefore be pumped out and replaced by the SF 6 gas. Furthermore, since the partial discharge and surge voltage resistance are essentially limited by the axial electrical field strength at the outer edges of the electrically conductive potential control inserts in such high-voltage bushing insulators made of wound insulating material films with capacitive potential control, it must in particular be ensured that at least these edges are in the special insulating medium. In the known bushing insulator, however, replacing the air with SF 6 at these points is made more difficult, since the thin metal foils of the potential control inserts are flat over the neighboring insulating foils are included and therefore gas exchange on them is relatively difficult to achieve.
  • SF 6 sulfur hexafluoride
  • embossed foils are provided as potential control inserts.
  • This design of the high-voltage bushing can advantageously ensure that cavities formed on the potential control inserts during the winding process, in particular on the edges, are always only filled with the insulating medium, since there is a certain gas permeability between the embossed control inserts and the adjacent insulating foils.
  • embossed foils are generally mechanically more stable than smooth foils. When producing the bushing insulator with such embossed potential control inserts, it is therefore easier to handle than with smooth foils. In particular, the risk is reduced that kinks occur in the potential control deposits during the winding process, at the edges of which the electric field strength would be undesirably increased.
  • FIG. 1 schematically illustrates a high-voltage bushing is light.
  • Fig. 2 shows schematically a part of this high-voltage bushing designed according to the invention.
  • the bushing contains a central conductor 2, which is, for example, a copper tube and has a high-voltage potential of over 200 kV at 50 Hz.
  • the central conductor preferably consists of a stainless steel or aluminum tube.
  • An insulating body 2 is arranged concentrically around the conductor and has two beveled, conical jacket-shaped side surfaces 4 and 5 and between them a cylindrical jacket surface 6.
  • This insulating body is wound from insulating films made of a plastic material with a high dielectric constant, such as polypropylene films.
  • capacitor inserts 7 to 10 are provided concentrically to one another and isolated from one another, which are indicated in the figure by lines parallel to the central conductor 2.
  • These capacitor inserts, which are used for potential control and are especially designed in accordance with the invention, are expediently arranged in such a way that an approximately linear potential gradient can form along the slanted side surfaces 4 and 5 of the insulating body 3 from the inside to the outside.
  • This approximately linear potential characteristic on the side surfaces 4 and 5 can be achieved in a known manner by a suitable choice of the radial distances between the individual capacitor inserts and by their axial lengths (cf., for example, US Pat. No. 3,462,545).
  • the innermost, ladder nearby and designated 8 and 9 capacitor inserts are, for example, at high voltage potential, while the outermost capacitor insert 10 is on the outer surface 6 with an electrical connection 11 at ground potential.
  • Suitable media are, for example, special oils or in particular gases such as sulfur hexafluoride (SF 6 ) or nitrogen (N 2 ). According to the exemplary embodiment according to the figure, an SF 6 limitation of the insulation body is assumed.
  • the insulation body can also be made of a cryogenic medium such as e.g. be impregnated with helium (cf. DE-OS 2 327 629).
  • the insulation body 3 of a high-voltage bushing contains, according to the section 12 shown as a longitudinal section in FIG. 2, thin potential control inserts which are embossed and of which only a single control insert is shown in the figure, designated 10.
  • the capacitor control inserts can for example be made from a thin sheet of metal such as aluminum. Films made of a plastic such as polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP) or polycarbonate (PC) are also suitable as potential control deposits. These tax deposits are provided with a knot, for example, and they contain between 300 and 700, preferably about 500 knobs / cm 2 .
  • the tax deposits should each have a total thickness which is at least 50% greater than the thickness of a corresponding film without embossing.
  • the embossed / um has a total thickness of about 40 microns.
  • the insulating body is also wound from smooth insulating foils 14, which are made of polypropylene or polyethylene, for example. Between two layers each smooth insulation foils 14 there is also a layer of embossed insulation foils 15. These foils are also provided with a knot, for example containing about 500 knobs / cm 2 .
  • embossed insulation foils 15 are advantageously provided on both sides of the potential control insert 10. This ensures that the winding 3 is sufficiently permeable to the insulating medium, such as the SF 6 gas.
  • the cavities formed by the knobs of the potential control insert 10 and the adjacent insulation foils 15, some of which are denoted by 16 in the figure, are relatively easy to evacuate after the winding process of the insulation body and to fill them with the insulation medium.
  • the conductor part of the high-voltage bushing which is at high voltage potential is arranged centrally and that the conductor parts which are at ground potential surround it, the insulation body being provided between these conductor parts.
  • the high-voltage bushing according to the invention is also suitable for electrical devices in which high-voltage potential is present on the outside and earth potential on the inside.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulators (AREA)
  • Insulating Bodies (AREA)
  • Insulation, Fastening Of Motor, Generator Windings (AREA)
EP81100119A 1980-01-18 1981-01-09 Traversée haute-tension isolée aux feuilles comportant des insertions de contrôle du potentiel Expired EP0032690B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81100119T ATE5034T1 (de) 1980-01-18 1981-01-09 Folienisolierte hochspannungsdurchfuehrung mit potentialsteuereinlagen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3001810 1980-01-18
DE19803001810 DE3001810A1 (de) 1980-01-18 1980-01-18 Folienisolierte hochspannungsdurchfuehrung mit potentialsteuereinlagen

Publications (3)

Publication Number Publication Date
EP0032690A2 true EP0032690A2 (fr) 1981-07-29
EP0032690A3 EP0032690A3 (en) 1981-11-11
EP0032690B1 EP0032690B1 (fr) 1983-10-12

Family

ID=6092430

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81100119A Expired EP0032690B1 (fr) 1980-01-18 1981-01-09 Traversée haute-tension isolée aux feuilles comportant des insertions de contrôle du potentiel

Country Status (4)

Country Link
US (1) US4387266A (fr)
EP (1) EP0032690B1 (fr)
AT (1) ATE5034T1 (fr)
DE (1) DE3001810A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998019315A1 (fr) * 1996-10-25 1998-05-07 Siemens Aktiengesellschaft Ensemble isolateur
DE19856123C2 (de) * 1998-12-04 2000-12-07 Siemens Ag Hohlisolator

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5281767A (en) * 1992-10-30 1994-01-25 A.B. Chance Company Reduced mechanical stress bushing and conductor rod assembly
US5968210A (en) * 1997-11-12 1999-10-19 Pacesetter, Inc. Electrolytic capacitor and method of manufacture
DE10048838B4 (de) * 2000-09-30 2008-09-18 Abb Ag Kapazitive Steuerung mindestens einer Vakuum-Schaltkammer
US6951987B1 (en) 2003-01-31 2005-10-04 United States Of America As Represented By The Secretary Of The Navy High voltage bushing
EP1939897A1 (fr) * 2006-12-28 2008-07-02 ABB Research Ltd. Structure isolante dotée d'écrans formant un champ électrique
ATE509353T1 (de) 2008-10-27 2011-05-15 Abb Research Ltd Hochspannungsdurchführung
EP2431982B1 (fr) * 2010-09-21 2014-11-26 ABB Technology AG Ligne enfichable et installation haute tension dotée d'une telle ligne
US8963015B2 (en) * 2011-01-18 2015-02-24 Fisher Controls International Llc Capacitor coupled cable shield feedthrough
KR101720237B1 (ko) * 2015-05-26 2017-04-10 주식회사 효성 콘덴서 부싱 및 그 제조방법
US11146053B2 (en) * 2016-01-29 2021-10-12 Power Hv Inc. Bushing for a transformer
DE102018201160A1 (de) * 2018-01-25 2019-07-25 Pfisterer Kontaktsysteme Gmbh Hochspannungsdurchführung, elektrisches Gerät mit Hochspannungsdurchführung und Verfahren zur Herstellung des elektrischen Gerätes
DE102018215274A1 (de) * 2018-09-07 2020-03-12 Siemens Aktiengesellschaft Anordnung und Verfahren zur Potentialabsteuerung in der Hochspannungstechnik
EP3846182A1 (fr) * 2019-12-30 2021-07-07 ABB Power Grids Switzerland AG Bague de condensateur

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA871344A (en) * 1971-05-18 D. Sullivan Thomas Capacitor roll section having embossed surfaces to aid impregnation
CA871345A (en) * 1971-05-18 D. Rayno Glenn Capacitor roll section having roughened engaging surfaces to aid impregnation
FR742448A (fr) * 1933-03-07
FR44238E (fr) * 1933-08-17 1934-12-01 Jeumont Forges Const Elec Procédé de construction des bornes de traversée à haute tension
GB991546A (en) * 1960-03-25 1965-05-12 Reyrolle A & Co Ltd Improvements relating to high-voltage insulation and insulating components
US3462545A (en) * 1967-01-13 1969-08-19 Westinghouse Electric Corp Condenser bushing
GB1361079A (en) * 1972-10-10 1974-07-24 Ici Ltd Capacitors
DE2327629A1 (de) * 1973-05-30 1974-12-12 Siemens Ag Durchfuehrungsisolator fuer hochspannungseinrichtungen und verfahren zu seiner herstellung
US4228481A (en) * 1978-10-19 1980-10-14 General Electric Company Capacitor with embossed foil electrode

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998019315A1 (fr) * 1996-10-25 1998-05-07 Siemens Aktiengesellschaft Ensemble isolateur
DE19856123C2 (de) * 1998-12-04 2000-12-07 Siemens Ag Hohlisolator
US6534721B2 (en) 1998-12-04 2003-03-18 Siemens Aktiengesellschaft Hollow insulator and production method

Also Published As

Publication number Publication date
US4387266A (en) 1983-06-07
DE3001810A1 (de) 1981-07-23
ATE5034T1 (de) 1983-10-15
EP0032690B1 (fr) 1983-10-12
EP0032690A3 (en) 1981-11-11

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