EP0051715A2 - Dispositif de sécurité pour traversées à haute tension de condensateurs - Google Patents

Dispositif de sécurité pour traversées à haute tension de condensateurs Download PDF

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Publication number
EP0051715A2
EP0051715A2 EP81105290A EP81105290A EP0051715A2 EP 0051715 A2 EP0051715 A2 EP 0051715A2 EP 81105290 A EP81105290 A EP 81105290A EP 81105290 A EP81105290 A EP 81105290A EP 0051715 A2 EP0051715 A2 EP 0051715A2
Authority
EP
European Patent Office
Prior art keywords
mounting flange
paper
ring
protective device
voltage condenser
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
EP81105290A
Other languages
German (de)
English (en)
Other versions
EP0051715A3 (en
EP0051715B1 (fr
Inventor
Wolfgang Zürich
Gerhard Brödner
Joachim Voss
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.)
Transformatorenwerk Karl Liebknecht VEB
Original Assignee
Transformatorenwerk Karl Liebknecht VEB
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 Transformatorenwerk Karl Liebknecht VEB filed Critical Transformatorenwerk Karl Liebknecht VEB
Publication of EP0051715A2 publication Critical patent/EP0051715A2/fr
Publication of EP0051715A3 publication Critical patent/EP0051715A3/de
Application granted granted Critical
Publication of EP0051715B1 publication Critical patent/EP0051715B1/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 fuse device for high-voltage capacitor bushings in soft paper design, which are installed in transformers filled with insulating liquid, choke coils or similar electrical devices
  • the active part is generally housed in closed housings filled with a liquid insulating medium.
  • suitable insulating arrangements are attached around the conductor in order to prevent an electrical flashover or breakdown at the passage point through the preferably metallic housing wall.
  • bushings are usually used which are manufactured as a complete assembly and which, at higher voltages, have a capacitor winding arranged concentrically with the conductor, the coverings of which reduce the conductor potential to the earth potential of the housing in a controlled manner.
  • the capacitors are designed as soft paper windings with inserted coatings made of metal foil or of semiconducting paper.
  • the capacitor winding the central inner conductor is embedded in a hermetically sealed housing, which is usually filled with an insulating liquid.
  • This housing consists of a metallic center piece, which is also designed as a flange for attachment to the opening through the device housing.
  • the ribbed outdoor isolator is located outside the transformer.
  • the lower part of the bushing protruding into the interior of the transformer also consists of a porcelain cap, but because of the surrounding insulating medium, there is no need for outer ribs to extend the creepage distance.
  • the mechanical integrity of such feedthroughs is effected in a known manner by a central pin, or a central tube, are pressed on the b zw. Porcelain throws with high force against the metallic center flange.
  • a spring element which is mostly interposed at the head end, ensures a uniform pressing pressure, which remains effective even with small thermally induced changes in length.
  • the central tensioning element also serves as a current conductor, and if a tube is used for this, a cable conductor can also be guided inside.
  • the central tensioning element is surrounded by a soft paper capacitor winding which is itself surrounded by a liquid insulating medium, preferably insulating oil, in such a way that the winding "floats" in the insulating oil.
  • the function-related spring element accelerates the breakdown. It is particularly disadvantageous and dangerous in the event of a collapse of the bushing that the central capacitor winding slides into the interior of the transformer due to the action of gravity and causes large electrical and mechanical damage which can lead to the destruction of the transformer or
  • Consequential damage in the systems e.g. Can cause fires.
  • the invention seeks to remedy this.
  • the invention as characterized in the claims, solves the problem of creating a safety device for high-voltage capacitor bushings, which prevents the capacitor winding from falling through into the interior of the transformer if the union porcelain breaks.
  • a conical ring narrowing downward in the inner diameter is arranged on the inner circumference of the fastening flange and, as a counterpart to this, a ring of insulating paper widening upward in diameter is wound on the capacitor winding at the height of the fastening flange.
  • Both rings are dimensioned in such a way that if the outdoor insulator breaks, the capacitor winding jams after only a short downward movement and thus cannot get into the interior of the transformer.
  • the expected formation of wrinkles in the interior of the roll in the case of paper and the conductive coverings can be accepted because the implementation now only has to remain operational for a limited time.
  • wedge-shaped holding pieces can also be distributed uniformly.
  • the drawing shows a simplified sectional view of a high-voltage bushing, which consists of an outdoor insulator 1, a mounting flange 2 and the porcelain lower part 3.
  • the capacitor winding 4 made of soft paper is wound onto a tensioning bolt 5, which in this example is also a current conductor Nut 7 for bracing the entire assembly.
  • a paper wedge ring 9 is additionally wound up, which in the undamaged state of the bushing lies only loosely or not at all on the conical pressure ring 8.
  • the capacitor winding designed according to the invention slips. 4 down into the conical ring 8 and clamps firmly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulators (AREA)
EP19810105290 1980-11-04 1981-07-08 Dispositif de sécurité pour traversées à haute tension de condensateurs Expired EP0051715B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DD22495080A DD161044A3 (de) 1980-11-04 1980-11-04 Sicherungseinrichtung fuer hochspannungs-kondensator-durchfuehrung
DD224950 1980-11-04

Publications (3)

Publication Number Publication Date
EP0051715A2 true EP0051715A2 (fr) 1982-05-19
EP0051715A3 EP0051715A3 (en) 1982-11-17
EP0051715B1 EP0051715B1 (fr) 1986-06-11

Family

ID=5527043

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19810105290 Expired EP0051715B1 (fr) 1980-11-04 1981-07-08 Dispositif de sécurité pour traversées à haute tension de condensateurs

Country Status (3)

Country Link
EP (1) EP0051715B1 (fr)
DD (1) DD161044A3 (fr)
DE (1) DE3174805D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011086033A1 (fr) * 2010-01-15 2011-07-21 Siemens Aktiengesellschaft Traversée haute tension
CN102568757A (zh) * 2010-09-21 2012-07-11 Abb技术有限公司 插塞式套管和具有这样的套管的高电压设施
CN112673436A (zh) * 2018-08-30 2021-04-16 Abb电网瑞士股份公司 具有防旋转安装凸缘的电气套管和安装电气套管的方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE310463C (fr) *
US2859269A (en) * 1955-01-25 1958-11-04 Gen Electric High voltage bushing
BE654060A (fr) * 1964-10-07 1965-04-07 Acec Isolateur en résine synthétique coulée, durcie

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE310463C (fr) *
US2859269A (en) * 1955-01-25 1958-11-04 Gen Electric High voltage bushing
BE654060A (fr) * 1964-10-07 1965-04-07 Acec Isolateur en résine synthétique coulée, durcie

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011086033A1 (fr) * 2010-01-15 2011-07-21 Siemens Aktiengesellschaft Traversée haute tension
CN102714077A (zh) * 2010-01-15 2012-10-03 西门子公司 高压套管
CN102568757A (zh) * 2010-09-21 2012-07-11 Abb技术有限公司 插塞式套管和具有这样的套管的高电压设施
CN102568757B (zh) * 2010-09-21 2014-11-26 Abb技术有限公司 插塞式套管和具有这样的套管的高电压设施
CN112673436A (zh) * 2018-08-30 2021-04-16 Abb电网瑞士股份公司 具有防旋转安装凸缘的电气套管和安装电气套管的方法
US11798712B2 (en) 2018-08-30 2023-10-24 Hitachi Energy Switzerland Ag Electrical bushing having an anti-rotation mounting flange and method for mounting the same

Also Published As

Publication number Publication date
DE3174805D1 (en) 1986-07-17
DD161044A3 (de) 1984-08-29
EP0051715A3 (en) 1982-11-17
EP0051715B1 (fr) 1986-06-11

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