EP0029164B1 - Traversée haute tension - Google Patents

Traversée haute tension Download PDF

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Publication number
EP0029164B1
EP0029164B1 EP80106779A EP80106779A EP0029164B1 EP 0029164 B1 EP0029164 B1 EP 0029164B1 EP 80106779 A EP80106779 A EP 80106779A EP 80106779 A EP80106779 A EP 80106779A EP 0029164 B1 EP0029164 B1 EP 0029164B1
Authority
EP
European Patent Office
Prior art keywords
insulating
voltage
edges
electrically conductive
layer
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.)
Expired
Application number
EP80106779A
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German (de)
English (en)
Other versions
EP0029164A1 (fr
Inventor
Günther Matthäus
Joachim Dr. Ruffer
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
Original Assignee
Siemens 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
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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=6086088&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0029164(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Siemens AG filed Critical Siemens AG
Priority to AT80106779T priority Critical patent/ATE4521T1/de
Publication of EP0029164A1 publication Critical patent/EP0029164A1/fr
Application granted granted Critical
Publication of EP0029164B1 publication Critical patent/EP0029164B1/fr
Expired legal-status Critical Current

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    • 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 high-voltage potential and at earth potential, and an insulation body made of wound insulating foils arranged therebetween, which contains electrically conductive foils which end within the insulation body as potential control inserts which are folded over at their edges facing the outer boundary surfaces of the insulation body .
  • a high-voltage bushing with such an insulator is known from DE-C-641 252.
  • connection points of electrical devices with high operating voltages of, for example, 100 kV and higher high-voltage parts of these devices have to be passed through parts that are at ground potential in such a way that arcing can be 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 insulating bushings may also be necessary in the case of converters and switchgear.
  • the electrically conductive parts in the high-voltage bushings which are at high voltage potential, are surrounded by special bushing insulators.
  • the bushing insulator known from GB-A-1 129 995 is wound from a flexible, electrically insulating material, for example a sheet-like special paper.
  • so-called electrically conductive potential control inserts are wound concentrically to one another and insulated from one another in this bushing insulator. With these inserts, a control of the voltage distribution via the bushing insulator and thus an increase in the resistance to partial discharge and surge voltage can be achieved (see, e.g., P. Böning: Little Textbook of Electrical Strength, Düsseldorf, 1955, pages 140 to 142).
  • 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.
  • the outer edges of the potential control inserts end in bead-like thickenings, for example due to the control inserts being folded around an annularly bent wire, in order to obtain the largest possible radius of curvature of the outer edge.
  • these outer edges can also be surrounded by a layer of a material with a high dielectric constant (cf. CH-A-244 927 and CH-A-223 139).
  • a bushing insulator which contains potential control inserts made of thin metal foils which are arranged entirely within a leolization body. These inserts consist of thin metal foils, which are folded over on their edges facing the outer boundary surfaces of the insulating body. Since these foils can be folded with a sufficiently small radius of curvature, wrinkling can be ruled out when winding the insulation body. At these edges, however, the bent metal foils are additionally glued to the adjacent layers of insulating foils. In addition to the fact that the production of such a bushing insulator is relatively complex, the adhesive technology also impairs impregnation with a special insulating medium at these points which are important for the dielectric strength of the insulator.
  • each of these inserts is provided with additional insulation by tearing over the edges of the insulating paper that protrudes during winding around the edges of the control insert. This creates relatively thick ridges on the edges.
  • each such control insert must therefore be applied to its own hard paper cylinder. This does facilitate the disassembly of the winding; the structure of the winding is very expensive, especially when you consider that z. B. for a corresponding 100 kV implementation a large number of tax deposits are required.
  • the object of the present invention is therefore to simplify the construction of the high-voltage bushing mentioned at the outset in such a way that a wrinkle-free winding of its insulation body is made possible and, at the same time, partial discharge and surge voltage resistance are to be ensured, as are required for operating voltages of 100 kV and higher.
  • the advantages of this design of the high-voltage bushing are, in particular, that the electrical field strength at the edges of the potential control inserts is limited in a simple manner and thus the partial discharge and surge voltage resistance of the high-voltage bushing are correspondingly high.
  • the double-layer foils can be folded over at the edges with a sufficiently small radius of curvature, so that wrinkling of the insulation foils during the winding of the insulation body can be ruled out.
  • FIG. 1 schematically illustrates a high-voltage bushing.
  • 2 schematically shows a part of this high-voltage bushing designed according to the invention.
  • the high-voltage bushing shown in FIG. 1 as a longitudinal section can, for. B. Be part of an end closure of a high-voltage cable (see “3rd International Symposium on High Voltage Engineering •, Milan, 28th-31st August 1979, report No. 32.09).
  • the implementation contains a central conductor 2, the z. B. is a copper tube and is at high voltage potential, for example 200 kV at 50 Hz.
  • An insulating body 3 is arranged concentrically around the conductor, which has two beveled, conical jacket-shaped side parts 4 and 5 and a cylindrical jacket surface 6 in between. This insulation body is wound from an insulating film, for example from a special paper or a plastic film.
  • capacitor inserts 7 to 10 which are indicated in the figure by lines parallel to the axis and are used for potential control, are arranged in the insulation body 3 concentrically with respect to one another and isolated from one another. These capacitor inserts are advantageously stepped at one end so that an approximately linear potential gradient can form from the inside to the outside along the bevelled side surfaces 4 and 5 of the insulation body 3.
  • the 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, near-conductor and 8 and 9 designated capacitor inserts are 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 e.g. B. special oils or gases such as SF s .
  • SF 6 cf. CIGRE 1972, Paper No. 15-02.
  • the insulation body can also be covered by a cryogenic medium such as, for. B. be impregnated with helium (see. DE-A-2 327 629).
  • the section of the insulating body 3 of a high-voltage bushing according to the invention contains two capacitor control inserts made of double-layer films, which are arranged parallel to one another and are generally designated 7 and 10. These double-layer films each contain an electrically conductive layer 14 and an insulating layer 15.
  • the insulating layer consists of a material with a high dielectric constant Er.
  • the dielectric constant can in particular be greater than 2, preferably greater than 3.
  • Special plastic materials are particularly suitable.
  • aluminum-laminated films made of a plastic such as polyvinyl chloride (PVC), polyethylene (PE), polypropylene (PP) or polycarbonate (PC) can advantageously be provided as double-layer films.
  • Hard PVC material e.g. B. has a dielectric constant Er of about 3.8 to 4.3 at room temperature.
  • the double-layer foils used for potential control are arranged in the insulation body 3 and on the bevelled side surface 4 turned sides so folded to edges 17 that the insulating layers 15 each point outwards. This ensures that, at least in the edge region, the folded edges 18 formed with the electrically conductive layers 14 are always tightly enclosed by the insulating material of the insulating layers 15. Since both the electrically conductive material and the plastic materials can be folded or bent relatively easily with a small radius of curvature, kinks or breaks at the edges can be avoided.
  • the folded double-layer films 7 and 10 are each arranged between adjacent layers 19 and 20 of isolatlonsfollen from which the insulation body 3 is wound.
  • the insulation foils can consist, for example, of a plastic material such as polypropylene.
  • a gusset-shaped cavity 22 is formed between the adjacent layers 19 and 20 of insulation films, which cavity fills with the insulation medium, for example the SF 6 gas.
  • edges of the electrically conductive layers 14 or control inserts 7 and 10 denoted by 18 do not protrude directly into these cavities 22, but instead are tightly enclosed there by the solid insulation material with high dielectric constant ⁇ r of the insulating layers 15, direct contact is made the outer fold edges 18 of the electrically conductive layers 14 with the insulating gas in the cavities 22 are avoided.
  • the electric field strength produced at edges 17 is accordingly correspondingly lower than in the insulating gas and consequently the partial discharge and surge voltage resistance are also increased accordingly.
  • 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.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulators (AREA)
  • Insulating Bodies (AREA)

Claims (3)

1. Traversée haute tension avec des éléments conducteurs portés au potentiel haute tension et au potentiel de terre, ainsi qu'avec un corps isolant (3) situé entre eux, constitué par des feuilles isolantes enroulées et comportant comme intercalaires de commande de potentiel (7 à 10), des feuilles électriquement conductrices qui se terminent à l'intérieur du corps isolant (3) et qui sont repliées au niveau de leurs bords (17, 18) situés du côté des surfaces limites extérieures (4, 5) du corps isolant (3), caractérisée par le fait que sont prévues, comme intercalaires de commande de potentiel (7 à 10) pour le corps isolant (3) imprégné avec un milieu isolant particulier, des feuilles à double couche (7, 10) avec respectivement une couche (14) en un matériau électriquement conducteur et une couche (15) en un matériau synthétique isolant à constante diélectrique sr d'au moins 2 à la température ambiante, et que les feuilles à double couche (7, 10) sont repliées de telle façon qu'au niveau des bords (17, 18) la couche isolante (15) entoure la couche conductrice (14).
2. Traversée haute tension selon la revendication 1, caractérisée par le fait que la constante diélectrique εr du matériau synthétique isolant est au moins égale à 3, à la température ambiante.
3. Traversée haute tension selon la revendication 1 ou 2, caractérisée par le fait qu'il est prévu, comme feuilles à double couche (7, 10), des feuilles de matière plastique revêtues d'aluminium.
EP80106779A 1979-11-15 1980-11-04 Traversée haute tension Expired EP0029164B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80106779T ATE4521T1 (de) 1979-11-15 1980-11-04 Hochspannungsdurchfuehrung.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2946172 1979-11-15
DE19792946172 DE2946172A1 (de) 1979-11-15 1979-11-15 Hochspannungsdurchfuehrung

Publications (2)

Publication Number Publication Date
EP0029164A1 EP0029164A1 (fr) 1981-05-27
EP0029164B1 true EP0029164B1 (fr) 1983-08-24

Family

ID=6086088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80106779A Expired EP0029164B1 (fr) 1979-11-15 1980-11-04 Traversée haute tension

Country Status (4)

Country Link
US (1) US4370514A (fr)
EP (1) EP0029164B1 (fr)
AT (1) ATE4521T1 (fr)
DE (1) DE2946172A1 (fr)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8608484D0 (en) * 1986-04-08 1986-05-14 Raychem Gmbh Electrical apparatus
US5281767A (en) * 1992-10-30 1994-01-25 A.B. Chance Company Reduced mechanical stress bushing and conductor rod assembly
DE19644482C1 (de) * 1996-10-25 1998-03-05 Siemens Ag Isolatoranordnung
DE19856123C2 (de) * 1998-12-04 2000-12-07 Siemens Ag Hohlisolator
DE102005021255B4 (de) * 2005-05-02 2007-08-16 Siemens Ag Barrierensystem für die Leitungsdurchführung einer elektrischen Anlage
CH698971A1 (de) * 2008-06-04 2009-12-15 Trench Switzerland Ag Isoliereinrichtung.
EP2375423A1 (fr) 2010-04-07 2011-10-12 ABB Research Ltd. Traversée électrique
WO2011154029A1 (fr) * 2010-06-07 2011-12-15 Abb Research Ltd Capteur de haute tension doté d'électrodes se chevauchant axialement
EP2431982B1 (fr) * 2010-09-21 2014-11-26 ABB Technology AG Ligne enfichable et installation haute tension dotée d'une telle ligne
EP2528071B1 (fr) * 2011-05-27 2018-08-08 ABB Schweiz AG Agencement haute tension comportant une structure d'isolation
DE102018201160A1 (de) * 2018-01-25 2019-07-25 Pfisterer Kontaktsysteme Gmbh Hochspannungsdurchführung, elektrisches Gerät mit Hochspannungsdurchführung und Verfahren zur Herstellung des elektrischen Gerätes
EP3667684A1 (fr) 2018-12-12 2020-06-17 ABB Schweiz AG Traversée électrique
US20230041971A1 (en) * 2019-12-30 2023-02-09 Hitachi Energy Switzerland Ag Condenser bushing

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE641252C (de) * 1929-04-12 1937-01-25 Aeg Durchfuehrungsisolator oder aehnliche kondensatorartig wirkende Einrichtung aus geschichtetem Isolierstoff mit mehrschichtigen metallischen Einlagen
DE738569C (de) * 1941-02-16 1943-08-21 Aeg In Isolieroel oder eine Isoliermasse eingebettete Kondensatordurchfuehrung, bei welcher die einzelnen Kondensatorstufen durch auf Weichpapier aufgewickelte Metallbelaegemit umgeschlagenen Raendern gebildet werden, die durch umgerissene Papierstreifen querisoliert sind
DE1490664A1 (de) * 1964-09-21 1969-06-04 Siemens Ag Endenabschluss fuer Hochspannungsleiter mit einer Isolierung aus einem thermoplastischen Kunststoff,insbesondere aus Polyaethylen
DE1803468A1 (de) * 1967-10-18 1969-08-14 Elek Sitetsforsyningens Forskn Anordnung zur kapazitiven Hochspannungsverteilung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB339227A (fr) * 1929-04-11 1930-12-04 International General Electric Company Incorporated
CH223139A (de) * 1942-01-19 1942-08-31 Bbc Brown Boveri & Cie Hochspannungsdurchführung mit Kondensatoreinlagen.
CH244927A (de) * 1945-06-30 1946-10-15 Bbc Brown Boveri & Cie Anordnung mit durch Kondensatorbeläge potentialgesteuerter Stelle des Austrittes von elektrischen Leitergebilden aus der Isoliermasse.
GB1129995A (en) * 1964-12-08 1968-10-09 Micanite & Insulators Co Ltd Improvements in and relating to electric insulating bushings
US3462545A (en) * 1967-01-13 1969-08-19 Westinghouse Electric Corp Condenser bushing
US3390312A (en) * 1967-03-03 1968-06-25 Sprague Electric Co Metallized film capactor

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE641252C (de) * 1929-04-12 1937-01-25 Aeg Durchfuehrungsisolator oder aehnliche kondensatorartig wirkende Einrichtung aus geschichtetem Isolierstoff mit mehrschichtigen metallischen Einlagen
DE738569C (de) * 1941-02-16 1943-08-21 Aeg In Isolieroel oder eine Isoliermasse eingebettete Kondensatordurchfuehrung, bei welcher die einzelnen Kondensatorstufen durch auf Weichpapier aufgewickelte Metallbelaegemit umgeschlagenen Raendern gebildet werden, die durch umgerissene Papierstreifen querisoliert sind
DE1490664A1 (de) * 1964-09-21 1969-06-04 Siemens Ag Endenabschluss fuer Hochspannungsleiter mit einer Isolierung aus einem thermoplastischen Kunststoff,insbesondere aus Polyaethylen
DE1803468A1 (de) * 1967-10-18 1969-08-14 Elek Sitetsforsyningens Forskn Anordnung zur kapazitiven Hochspannungsverteilung

Also Published As

Publication number Publication date
DE2946172A1 (de) 1981-05-21
US4370514A (en) 1983-01-25
EP0029164A1 (fr) 1981-05-27
ATE4521T1 (de) 1983-09-15

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