EP0029164A1 - Traversée haute tension - Google Patents

Traversée haute tension Download PDF

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Publication number
EP0029164A1
EP0029164A1 EP80106779A EP80106779A EP0029164A1 EP 0029164 A1 EP0029164 A1 EP 0029164A1 EP 80106779 A EP80106779 A EP 80106779A EP 80106779 A EP80106779 A EP 80106779A EP 0029164 A1 EP0029164 A1 EP 0029164A1
Authority
EP
European Patent Office
Prior art keywords
layer
insulating
voltage
electrically conductive
potential
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
EP80106779A
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German (de)
English (en)
Other versions
EP0029164B1 (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(A1) "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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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 high voltage potential and at earth potential, and an insulation body made of wound insulating foils arranged between them, which contains electrically conductive potential control inserts and is optionally impregnated with a special insulating medium.
  • a high-voltage bushing with such an insulator is known from British Patent 1,129,995.
  • 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 flashovers are avoided with certainty.
  • a corresponding connection point for example the end closure of a high-voltage cable or the connection of a high-voltage transformer.
  • Corresponding insulating 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.
  • the bushing insulator known from British Patent 1,129,995 is wound from a flexible, electrically insulating material, for example a special film-like 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, the voltage distribution can be controlled via the feedthrough insulator and thus an increase in the resistance to partial discharge and surge voltage (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 therefore end in bulges like thickening, for example due to a fold of the control inserts around an annularly bent wire, so as 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-PSen 244 927 and 223 139).
  • the object of the present invention is now to improve the high-voltage bushing of the type mentioned at the outset in such a way that the partial discharge and surge voltage resistance of its bushing insulator are further increased.
  • This object is achieved in that double-layer films each having a layer of electrically conductive material and a layer of an insulating material with a high dielectric constant ⁇ r are provided as potential control inserts and that the double-layer films on their sides facing the outer boundary surfaces of the insulation body so to edges are folded that the insulating layer encloses the electrically conductive layer.
  • the advantages of this design of the high-voltage bushing are in particular that allow the double-layer films to fold to edges with a sufficiently small radius of curvature so that wrinkling of the insulation films when winding the insulation body can be ruled out.
  • the outer edges of the control inserts do not protrude directly into the gusset-like cavities formed on them, possibly filled with the insulating medium, between adjacent turns of the insulating wrapping films, since the outer edges are surrounded by the insulating dielectric of the insulating layers.
  • the electrical field strength at the metal edges is thus advantageously reduced and the partial discharge and surge voltage resistance of the high-voltage bushing are improved accordingly.
  • FIG. 1 schematically illustrates a high-voltage bushing.
  • Fig. 2 shows schematically a part of this high-voltage bushing designed according to the invention.
  • the high-voltage bushing shown as a longitudinal section in FIG. 1 can, for example, be part of an end closure of a high-voltage cable (cf. "3rd International Symposium on High Voltage Engineering", Milan, August 28-31, 1979, report No. 32.09).
  • the bushing contains a central conductor 2, which is a copper tube, for example, 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 along the bevelled side surfaces 4 and 5 of the insulating body 3 from the inside to the outside.
  • 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 (see, for example, US Pat. No. 3,462,545).
  • the innermost capacitor inserts and designated 8 and 9 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.
  • this can optionally be impregnated with an insulating medium.
  • Suitable media include special oils or gases such as SF 6 .
  • the insulation body 2 is impregnated with SF 6 (cf. CIGRE 1972, Paper No. 15-02).
  • the insulation body can also be covered by a cryogenic medium such as e.g. be impregnated with helium (cf. DE-OS 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 £.
  • the Dielek Tricity 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 for example, has a dielectric constant Er of about 3.8 to 4.3 at room temperature.
  • the double-layer films used for potential control are arranged in the winding 3 and folded on the sides facing the beveled side surface 4 to edges 17 such 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 insulation films, 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 insulation foil layers 19 and 20, which fills with the insulation medium, for example the SF 6 gas.
  • the fold edges designated 18 of the electrically conductive layers 14 of the control inserts 7 and 10 do not protrude directly into these cavities 22, but instead are tightly enclosed there by the solid insulation material with high dielectric constants of the insulating layers 15, a direct one becomes Avoid contact of the outer fold edges 18 of the electrically conductive layers 14 with the insulating gas in the cavities 22.
  • 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulators (AREA)
  • Insulating Bodies (AREA)
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
DE19792946172 DE2946172A1 (de) 1979-11-15 1979-11-15 Hochspannungsdurchfuehrung
DE2946172 1979-11-15

Publications (2)

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

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0244957A1 (fr) * 1986-04-08 1987-11-11 Raychem Gmbh Dispositif électrique pour la commande d'un potentiel électrique
WO1998019315A1 (fr) * 1996-10-25 1998-05-07 Siemens Aktiengesellschaft Ensemble isolateur
DE19856123A1 (de) * 1998-12-04 2000-07-06 Siemens Ag Hohlisolator

Families Citing this family (10)

* 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
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 (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH223139A (de) * 1942-01-19 1942-08-31 Bbc Brown Boveri & Cie Hochspannungsdurchführung mit Kondensatoreinlagen.

Family Cites Families (9)

* 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
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
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.
DE1490664A1 (de) * 1964-09-21 1969-06-04 Siemens Ag Endenabschluss fuer Hochspannungsleiter mit einer Isolierung aus einem thermoplastischen Kunststoff,insbesondere aus Polyaethylen
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
NO117033B (fr) * 1967-10-18 1969-06-23 Elektrisitetsforsyning

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH223139A (de) * 1942-01-19 1942-08-31 Bbc Brown Boveri & Cie Hochspannungsdurchführung mit Kondensatoreinlagen.

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0244957A1 (fr) * 1986-04-08 1987-11-11 Raychem Gmbh Dispositif électrique pour la commande d'un potentiel électrique
WO1998019315A1 (fr) * 1996-10-25 1998-05-07 Siemens Aktiengesellschaft Ensemble isolateur
DE19856123A1 (de) * 1998-12-04 2000-07-06 Siemens Ag Hohlisolator
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
US4370514A (en) 1983-01-25
EP0029164B1 (fr) 1983-08-24
DE2946172A1 (de) 1981-05-21
ATE4521T1 (de) 1983-09-15

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