EP3843111A1 - Isolateur haute tension pourvu de stabilisateur géométrique invar - Google Patents

Isolateur haute tension pourvu de stabilisateur géométrique invar Download PDF

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Publication number
EP3843111A1
EP3843111A1 EP20189220.5A EP20189220A EP3843111A1 EP 3843111 A1 EP3843111 A1 EP 3843111A1 EP 20189220 A EP20189220 A EP 20189220A EP 3843111 A1 EP3843111 A1 EP 3843111A1
Authority
EP
European Patent Office
Prior art keywords
insulation
invar
stabilizer
geometric
insulator
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.)
Withdrawn
Application number
EP20189220.5A
Other languages
German (de)
English (en)
Inventor
Gleb Kravtsov
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP3843111A1 publication Critical patent/EP3843111A1/fr
Withdrawn legal-status Critical Current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
    • H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
    • H01B13/32—Filling or coating with impervious material
    • 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
    • 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 high voltage technology, namely high voltage insulators, which allow conductors to pass through a partition, e.g. B. ensure a wall, the housing of an electrical machine or an electrical device, and insulate the conductors therefrom.
  • the invention aims to increase the reliability of isolators by using a geometric stabilizer.
  • the invention achieves the greatest effect when used in insulators with solid (dry) insulation.
  • the solid (dry) insulation consists of insulating paper impregnated with resin.
  • the application of the invention is also effective in isolators designed for use in areas with cold climates.
  • Insulators with oil paper insulation ensure that the conductors can be guided through the partition wall and are insulated from the partition wall.
  • OIP insulation insulation with oil-soaked paper, OIP insulation
  • Such isolators form the largest Part of the high voltage insulators.
  • These shortcomings mainly relate to the inspection and maintenance of the isolators during operation.
  • the deficiencies of the isolators also include the risk of explosion and fire. These deficiencies have been eliminated in solid insulators.
  • a certain type of insulation cannot be considered preferred, as each type has its own positive properties.
  • Oil paper insulation is more effective in difficult climatic working conditions with large temperature fluctuations in the environment.
  • the oil impregnation of the paper gives the insulating layers a certain mobility and prevents mechanical stress. Mechanical stresses can lead to cracks in the insulation.
  • solid insulation can concentrate all the mechanical stresses associated with thermal expansion, the use of solid insulators at low temperatures involves certain risks. This is one of the reasons why the standard IEC 60137: 2008 "Insulated bushings for alternating voltages above 1000V" limits the maximum excess of the temperature of the contact parts of an insulator above the ambient air temperature to a maximum of 65 ° C. At low ambient temperatures, such as B. in the far north, this makes operation more difficult and forces a possible reduction in reliability.
  • the technical task of increasing the reliability of insulators in a wide range of ambient temperature changes can be reduced to a reduction in the mechanical stresses in the insulating material caused by thermal expansion.
  • the object is achieved in that current-carrying elements of an insulator are placed in a shell made of alloys of the Invar group (iron-nickel alloy). The sheath absorbs the forces associated with the thermal expansion of the conductor and closes the transmission these forces act on the insulation.
  • This solution to the problem of increasing the reliability essentially distinguishes the present invention from the previously known solutions in which the increase in reliability is achieved by a special insulation structure.
  • the patent RU 2406174 serve.
  • a special design of the insulating layers ensures increased reliability.
  • the subject of the invention includes a high-voltage insulator which enables the conductors to pass through the partition and insulates the conductors from this partition.
  • the current-carrying part of the insulator has a shell which is formed from an Invar alloy. Inside the sheath there are one or more conductors made of a material with high electrical conductivity. The space around this ladder is filled with elastomer.
  • the novelty of the insulator consists in the use of a geometric stabilizer to compensate for the thermal expansion of the conductor.
  • the role of the geometric stabilizer is taken over by an Invar shell.
  • Invar alloys, iron-nickel alloys with a nickel content of 30 to 40% with chromium, cobalt, copper, titanium or manganese doping are precision alloys with abnormally low coefficients of linear thermal expansion. The exact value of the coefficient of linear expansion depends on the alloy composition, the hardening processes and the mechanical processing methods.
  • the Invar shell retains its stable dimensions when the thermal conditions of the insulator change. This keeps the mechanical influence on the insulation as low as possible. It also prevents insulation damage such as peeling and cracking.
  • the invention is implemented with standard devices and technologies available in the electrical industry for manufacturing insulators.
  • the manufacture of precision alloys is also well established in the industry.
  • the use of known and proven technologies in the invention makes it possible to implement the invention in a short time on an industrial scale.

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Power Engineering (AREA)
  • Organic Insulating Materials (AREA)
  • Insulators (AREA)
EP20189220.5A 2019-12-23 2020-08-03 Isolateur haute tension pourvu de stabilisateur géométrique invar Withdrawn EP3843111A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
RU2019143501A RU2723637C1 (ru) 2019-12-23 2019-12-23 Высоковольтный изолятор с инваровым геометрическим стабилизатором

Publications (1)

Publication Number Publication Date
EP3843111A1 true EP3843111A1 (fr) 2021-06-30

Family

ID=71096009

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20189220.5A Withdrawn EP3843111A1 (fr) 2019-12-23 2020-08-03 Isolateur haute tension pourvu de stabilisateur géométrique invar

Country Status (3)

Country Link
EP (1) EP3843111A1 (fr)
DE (1) DE202020005966U1 (fr)
RU (1) RU2723637C1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3485940A (en) * 1967-12-26 1969-12-23 Allis Chalmers Mfg Co Post type modular insulator containing optical and electrical components
WO2003096090A1 (fr) * 2002-05-08 2003-11-20 Ykk Corporation Dispositif et procede de production d'un coupleur a fibres optiques conservant une polarisation
US20090223699A1 (en) * 2007-12-17 2009-09-10 Schott Ag Method for manufacturing an electrical leadthrough and an electrical leadthrough manufactured according to said method
RU2406174C2 (ru) 2005-12-14 2010-12-10 Абб Рисерч Лтд Высоковольтный проходной изолятор

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR739473A (fr) * 1932-07-05 1933-01-12 Ohio Brass Co Perfectionnements aux isolateurs électriques
JPS5188031A (fr) 1975-01-31 1976-08-02
US3967051A (en) * 1975-05-22 1976-06-29 Westinghouse Electric Corporation Cast resin capacitor bushing having spacer members between the capacitor sections and method of making same
US7023474B2 (en) 2001-05-21 2006-04-04 Polaroid Corporation Method and system for enabling the single use of digital cameras
CA2811262C (fr) * 2009-09-14 2016-06-21 Roger Faulkner Systeme modulaire de transmission souterraine de courant electrique continu a haute tension
US9208929B2 (en) 2013-09-20 2015-12-08 Schott Corporation GTMS connector for oil and gas market
ITUB20152903A1 (it) * 2014-08-14 2017-02-05 Schott Ag Passaggio elettrico e suo utilizzo

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3485940A (en) * 1967-12-26 1969-12-23 Allis Chalmers Mfg Co Post type modular insulator containing optical and electrical components
WO2003096090A1 (fr) * 2002-05-08 2003-11-20 Ykk Corporation Dispositif et procede de production d'un coupleur a fibres optiques conservant une polarisation
RU2406174C2 (ru) 2005-12-14 2010-12-10 Абб Рисерч Лтд Высоковольтный проходной изолятор
US20090223699A1 (en) * 2007-12-17 2009-09-10 Schott Ag Method for manufacturing an electrical leadthrough and an electrical leadthrough manufactured according to said method

Also Published As

Publication number Publication date
RU2723637C1 (ru) 2020-06-17
DE202020005966U1 (de) 2023-09-21

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