EP2283493B1 - Traversee presentant une partie active de base et un dispositif d'isolation - Google Patents

Traversee presentant une partie active de base et un dispositif d'isolation Download PDF

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Publication number
EP2283493B1
EP2283493B1 EP09757031.1A EP09757031A EP2283493B1 EP 2283493 B1 EP2283493 B1 EP 2283493B1 EP 09757031 A EP09757031 A EP 09757031A EP 2283493 B1 EP2283493 B1 EP 2283493B1
Authority
EP
European Patent Office
Prior art keywords
films
viscosity
insulating
base active
active piece
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.)
Not-in-force
Application number
EP09757031.1A
Other languages
German (de)
English (en)
Other versions
EP2283493A1 (fr
Inventor
Ruthard Minkner
Chrstian Schlegel
Wojciech Stepak
Dieter STÖCKLI
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
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Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP2283493A1 publication Critical patent/EP2283493A1/fr
Application granted granted Critical
Publication of EP2283493B1 publication Critical patent/EP2283493B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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 bushing and an insulation device according to the preamble of the independent device claim and a method for producing a bushing according to the preamble of the independent method claim.
  • the insulation device is used in high voltage engineering as a base element for the construction of bushings in the voltage range of 6 kV to 800 kV AC and DC voltage, but can also be used for measuring transformers, capacitors and supporters.
  • insulated feedthroughs with integrated controls for high voltage arrangements can be distinguished between two potentials or between high voltage potential and ground potential: oil impregnated paper (OIP), resin impregnated paper (RIP), resin coated paper (RBP) and gas insulated insulators.
  • OIP oil impregnated paper
  • RIP resin impregnated paper
  • RBP resin coated paper
  • Gas insulated insulators are as follows: Feedthroughs for transformers, feedthroughs for GIS systems, where GIS stands for "gas insulated switchgear", connections of GIS systems with transformers, wall feedthroughs or generator feedthroughs. The same isolation devices are also used for high-voltage transducers.
  • the following controls can be distinguished: a continuous control with variable electrode width, a double control with a constant width, a simple control with a constant width, a coarse control with ring electrode at the edge of the layer or a coarse control with earth electrode.
  • allowable field strength similar to that of OIP, is a dry dielectric, a mounting orientation independent, and silicone screens that can be applied directly to the active part.
  • the disadvantage is a complex and material-intensive production process (more expensive than OIP), TE values must be ⁇ 2 pC for life expectancy, inelastic active part can cause internal stresses, poor thermal conductivity of the dielectric compared to OIP, no organic Dielectric and an epoxy resin outer surface of the active part, which must be over-turned.
  • Resin-coated paper is characterized by a dry dielectric and a mounting orientation.
  • a disadvantage is a low TE input voltage, high permissible TE values during operation, which are not tolerated by a transformer builder and an active part outer surface, which must be over-turned.
  • SF 6 gas-insulated devices that z. B. use SF 6 as a gas, a dry dielectric, a mounting position independence, a simple manufacturing process and a TE value ⁇ 2 pC.
  • the disadvantage is a limitation of the permissible field strength at the ply edges by the SF 6 gas and its gas pressure, thereby no high utilization of the dielectric is possible.
  • Another disadvantage is an undesirable affiliation of the SF 6 gas to the greenhouse gases, a negative pressure of the insulator, which usually requires the use of composite insulators for safety reasons, as well as a limitation of the minus temperature range down by the gas pressure.
  • Line 501 is a potential line determined by control pads 502.
  • An insulation 503 of oil paper or gas-impregnated film is between a conductor 504 at high voltage potential and an electrode 505.
  • a base active part 506 is hermetically sealed from the environment by a porcelain insulator or composite insulator 507 completed.
  • a gap or gap 508 between the active part and the insulator is filled with an insulating liquid or insulating gas, such as air, SF 6 , N 2 , etc. under pressure of 1 bar to 6 bar.
  • a high voltage is applied to a terminal 509.
  • a high voltage electrode 510 has the same potential as the terminal 509.
  • a terminal 511 to the transformer or the gas insulated switchgear (GIS) is connected to the terminal 509 through the conductor 504.
  • the control electrode 505 is connected to a flange 512 and connected to ground potential 513.
  • the document US 4,362,897 A discloses a bushing according to the preamble of claim 1.
  • the present invention has for its object to provide a bushing and an insulating device, which do not have the disadvantages associated with a conventional implementation or isolation device described above, regardless of the mounting position, no porcelain or composite insulators and can be easily manufactured.
  • independent claim 8 relates to a method for producing a novel implementation with a base-active part and an insulating device.
  • Advantageous embodiments will become apparent from the dependent claims.
  • the base active part comprises a conductor, plastic-electro-foils, control electrodes and an earth electrode.
  • the insulation device has a shrink tube made of an electrically insulating material.
  • the basic active part together with the shrink tube allows a hermetically sealed base-active part without insulator which is synonymous with a dry active part. Also, any mounting position is possible in the inventive implementation, there are no porcelain or composite insulators needed and the inventive implementation can be made low.
  • the plastic-electro-films are arranged on a metal tube, a tube made of insulating material or an insulating rod.
  • the metal tube with the plastic-electro-films arranged thereon is also the conductor.
  • control electrodes comprise control foils of Al foils, vapor-deposited Al control foils or conductive material layers. It is also possible to use printed metal electrodes or printed or sprayed-on metal layers or conductive material layers as electrodes.
  • the single or double control was determined and selected as the electrodes Al foils, evaporated aluminum or a conductive material layer. Thus, either a use of dual or single control is possible. The result is a simple manufacturing process and an automatic production of the inventive implementation with integrated electrodes is also possible.
  • plastic-electro-films polyester-electro-films wherein the polyester-electro-films have a surface roughness of 0.07 microns to 0.5 microns and no inclusions of conductive particles and no defects are present.
  • the polyester-electro-films have a thickness of 10 .mu.m to 80 .mu.m, in particular a thickness of 18 .mu.m to 36 .mu.m.
  • the polyester-electro-films may, for. B. have a thickness of 18, 36 or 72 microns.
  • Another aspect of the present invention relates to an insulation device for a bushing, which has a shrink tube made of an electrically insulating material.
  • the basic active part together with the shrink tube allows a hermetically sealed base-active part without insulator which is synonymous with a dry active part. Also, any mounting position is possible in the inventive insulation.
  • the insulation device according to the invention further comprises silicone screens which are applied to the shrink tubing.
  • the shrink tube is a fluoroplastic shrink tube, in particular of FEP (fluorinated ethylene polymer).
  • FEP fluorinated ethylene polymer
  • Viton-E® shrink tubing can be used.
  • the shrink tube is shrunk by heat on the active part during the manufacturing process.
  • the enclosed by the insulating base active part is hermetically sealed by the shrink tube from the environment.
  • Shrink tubing can also be provided with O-rings or with a hot melt on its inside for better sealing.
  • silicone screens are easy to integrate on the active part.
  • the active part has a surface for the direct application of outer silicone shades for outdoor use.
  • a further aspect of the present invention relates to a method for producing a leadthrough with a base active part and an insulating device, wherein the base active part comprises a conductor, plastic-electro-foils, control electrodes and a ground electrode, in which a heat-shrinkable tube of an insulating material is arranged around the base active part and shrunk with heat.
  • control electrodes and their edges are provided under vacuum with an elastic and low-viscosity insulating liquid, or with an alternative low-viscosity insulating, which crosslinks at a crosslinking temperature of at least 50 ° C.
  • the insulating liquid may have the property that after a heat process, the insulating liquid passes into an elastic state.
  • Fig. 2 shows a section through an embodiment of an inventive implementation with an inventive insulating device and a control using the example of a transformer outdoor implementation.
  • Line 1 is a potential line (60%) determined by control electrodes 2.
  • a film insulation with plastic-electro-films 3 is located between a conductor 4 at high voltage potential and a ground electrode 5.
  • a base active part 6, which comprises the conductor 4, the Folienisolier noticed with the plastic-electro-films 3, control electrodes 2 and the earth electrode 5 is hermetically separated from the environment by a shrink tube 8.
  • a prior art nip 508 (see Fig. 1 ) is not available anymore.
  • an existing in the prior art insulator 507 see Fig.

Landscapes

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

Claims (9)

  1. Traversée présentant une partie active de base (6) et un dispositif d'isolation, selon laquelle la partie active de base (6) comprend un conducteur (4), des feuilles électriques en matière plastique (3), des électrodes de commande (2) et une électrode de terre (5), caractérisée en ce que le dispositif d'isolation comporte une gaine thermorétractable (8) en une matière électriquement isolante qui est agencé autour de la partie active de base.
  2. Traversée selon la revendication 1, caractérisée en ce que les feuilles électriques en matière plastique (3), les électrodes de commande (2) et leurs bords sont pourvus d'un liquide d'isolation faiblement visqueux présentant une viscosité comprise entre 8 mm2/s et 20 mm2/s à 40 °C, d'un liquide d'isolation optionnel faiblement visqueux qui se réticule à une température de réticulation d'au moins 50 °C et présente une viscosité comprise entre 20 mm2/s et 100 mm2/s à 40 °C ou d'un gaz, par exemple, de l'air, N2 ou SF6.
  3. Traversée selon la revendication 1 ou 2, caractérisée en ce que les feuilles électriques en matière plastique (3) sont agencées sur un tube métallique, en tube en matière isolante ou une barre isolante.
  4. Traversée selon la revendication 3, caractérisée en ce que le tube métallique avec les feuilles électriques en matière plastique (3) agencées dessus est en même temps le conducteur (4).
  5. Traversée selon l'une des revendications 1 à 4, caractérisée en ce que les électrodes de commande (2) comprennent des feuilles de commande en feuilles d'Al, des feuilles de commande en Al déposées en phase vapeur ou des couches de matière conductrices.
  6. Traversée selon l'une des revendications 1 à 5, caractérisée en ce que les feuilles électriques en matière plastique (3) comprennent des feuilles électriques en polyester, les feuilles électriques en polyester présentant une rugosité de surface de 0,07 µm à 0,5 µm sans inclusion de particules conductrices ni défauts.
  7. Traversée selon la revendication 6, caractérisée en ce que les feuilles électriques en polyester ont une épaisseur de 10 µm à 80 µm, et plus particulièrement une épaisseur de 18 µm à 36 µm.
  8. Procédé de fabrication d'une traversée comportant une partie active de base (6) et un dispositif d'isolation, la partie active de base (6) comprenant un conducteur (4), des feuilles électriques en matière plastique (3), des électrodes de commande (2) et une électrode de terre (5), caractérisé en ce qu'une gaine thermorétractable (8) en une matière isolante est agencée autour de la partie active de base (6) et subit une rétraction à la chaleur.
  9. Procédé selon la revendication 8, caractérisé en ce que les feuilles électriques en matière plastique (3), les électrodes de commande (2) et leurs bords sont pourvus, sous vide, d'un liquide d'isolation faiblement visqueux présentant une viscosité comprise entre 8 mm2/s et 20 mm2/s à 40 °C, d'un liquide d'isolation optionnel faiblement visqueux qui se réticule à une température de réticulation d'au moins 50 °C et présente une viscosité comprise entre 20 mm2/s et 100 mm2/s à 40 °C ou d'un gaz, par exemple, de l'air, N2 ou SF6.
EP09757031.1A 2008-06-04 2009-06-04 Traversee presentant une partie active de base et un dispositif d'isolation Not-in-force EP2283493B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
CH8452008 2008-06-04
CH02001/08A CH698971A1 (de) 2008-06-04 2008-12-22 Isoliereinrichtung.
PCT/CH2009/000183 WO2009146570A1 (fr) 2008-06-04 2009-06-04 Traversée présentant une partie active de base et un dispositif d'isolation

Publications (2)

Publication Number Publication Date
EP2283493A1 EP2283493A1 (fr) 2011-02-16
EP2283493B1 true EP2283493B1 (fr) 2017-09-27

Family

ID=40849186

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09757031.1A Not-in-force EP2283493B1 (fr) 2008-06-04 2009-06-04 Traversee presentant une partie active de base et un dispositif d'isolation

Country Status (4)

Country Link
EP (1) EP2283493B1 (fr)
CN (1) CN102057447B (fr)
CH (1) CH698971A1 (fr)
WO (1) WO2009146570A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012200249B3 (de) 2012-01-10 2012-10-31 Siemens Aktiengesellschaft Röntgenröhre und Verfahren zur Herstellung einer elektrischen Durchführung für eine Röntgenröhre
CN103500967A (zh) * 2013-10-22 2014-01-08 国家电网公司 胶浸纸电容式特高压交直流穿墙套管
EP2911255A1 (fr) * 2014-02-19 2015-08-26 ABB Technology Ltd Dispositif de traversée haute tension et son procédé de fabrication
DE102018215274A1 (de) * 2018-09-07 2020-03-12 Siemens Aktiengesellschaft Anordnung und Verfahren zur Potentialabsteuerung in der Hochspannungstechnik
CN112578242A (zh) * 2020-12-07 2021-03-30 国网北京市电力公司 变压器油纸绝缘系统的击穿电压的确定方法及系统

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1122120B (de) * 1955-06-13 1962-01-18 Westinghouse Electric Corp Verfahren zur Herstellung einer gewickelten, festen elektrischen Leiterisolation
US3539703A (en) * 1968-10-23 1970-11-10 High Voltage Power Corp High voltage termination apparatus for high voltage cables and pipetype transmission lines
US3794750A (en) * 1973-07-27 1974-02-26 Boston Insulated Wire & Cable Shielded cable
DE2946172A1 (de) * 1979-11-15 1981-05-21 Siemens AG, 1000 Berlin und 8000 München Hochspannungsdurchfuehrung
DE3001779C2 (de) * 1980-01-18 1987-01-02 Siemens AG, 1000 Berlin und 8000 München Hochspannungsdurchführung mit Lagen aus geprägten Isolierfolien
GB8608484D0 (en) * 1986-04-08 1986-05-14 Raychem Gmbh Electrical apparatus
WO1989006042A1 (fr) * 1987-12-19 1989-06-29 Isovolta Österreichische Isolierstoffwerke Aktieng Composant electro-isolant et son procede de fabrication
CH677565A5 (fr) * 1988-11-10 1991-05-31 Asea Brown Boveri
CN2394299Y (zh) * 1999-07-24 2000-08-30 襄樊国网合成绝缘子股份有限公司 一种电容式合成套管
CN1427423A (zh) * 2001-12-19 2003-07-02 孟繁恒 一种交流高压套管

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN102057447A (zh) 2011-05-11
WO2009146570A9 (fr) 2010-11-11
CH698971A1 (de) 2009-12-15
EP2283493A1 (fr) 2011-02-16
WO2009146570A1 (fr) 2009-12-10
CN102057447B (zh) 2012-08-29

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