EP0170170A1 - Enroulement en couches pour transformateurs - Google Patents

Enroulement en couches pour transformateurs Download PDF

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Publication number
EP0170170A1
EP0170170A1 EP85109066A EP85109066A EP0170170A1 EP 0170170 A1 EP0170170 A1 EP 0170170A1 EP 85109066 A EP85109066 A EP 85109066A EP 85109066 A EP85109066 A EP 85109066A EP 0170170 A1 EP0170170 A1 EP 0170170A1
Authority
EP
European Patent Office
Prior art keywords
winding
layer
spacer strips
insulating wall
additional insulation
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
EP85109066A
Other languages
German (de)
English (en)
Other versions
EP0170170B1 (fr
Inventor
Herbert Mössinger
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
Transformatoren Union AG
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
Application filed by Transformatoren Union AG, Siemens AG filed Critical Transformatoren Union AG
Priority to AT85109066T priority Critical patent/ATE30650T1/de
Publication of EP0170170A1 publication Critical patent/EP0170170A1/fr
Application granted granted Critical
Publication of EP0170170B1 publication Critical patent/EP0170170B1/fr
Expired legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/2823—Wires
    • H01F27/2828—Construction of conductive connections, of leads
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/28—Coils; Windings; Conductive connections
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • H01F27/323—Insulation between winding turns, between winding layers

Definitions

  • the invention relates to a layer winding for transformers with end-side, additional insulation for winding conductor insulation having rejections from winding layers flanked radially on both sides by further winding layers and with cooling channels separated between the winding layers by an insulating wall and kept open radially one above the other by spacer strips.
  • thicker spacer strips or oil channel strips adapted to the dimensions of the diversions have usually been provided on the entire winding circumference to lead out the reinforced insulated leads, in particular from inner winding layers, in order to ensure a sufficient flow of cooling oil.
  • the use of the thicker spacer bars causes diameter increases on the winding structure and thus weight increases with the consequence of an increased material consumption and with increasing transport dimensions.
  • the invention is therefore based on the object to improve the structure of layer windings of the type mentioned in such a way that the cross-sectional area claimed by the winding becomes smaller than in the previously conventional structure, but the safe dissipation of the heat losses generated from the winding must also be ensured like the circular cross-sectional shape of the individual winding layers which is essential for the short-circuit strength.
  • the insulating walls are curved in the same direction as in the normal circumferential area at every point of the diversion area and that the additional insulation of each of the diversions is continued in each case over two or more spacer strips in the circumferential direction on the first turn of the winding layer and that the deviations from the circular shape extend in cross-section of the insulating walls including the transition zones per diversion over several spacer strips in the circumferential direction of the winding.
  • the insulating walls consist of paper webs which are wound onto one another and glued to one another point by point, one end of each spacer strip is glued to the adjacent insulating wall, and the additional insulation of the leads is more elastic in itself than the insulating walls and the winding layers.
  • the winding structure according to the invention is very advantageous because, by not having to reinforce the cooling channels flanking the winding layers with leads, it leads to a smaller overall cross-section of the winding arrangement and thus also to smaller overall dimensions of the transformer, and because the winding arrangement according to the invention also surprisingly ensures compliance with the short-circuit voltage is advantageously influenced.
  • Radially above the winding layer 1 are, for example, winding layers 2 and 3 connected to diverters (not shown).
  • an insulating wall 4 is provided, which separates axially parallel cooling channels 5 from one another.
  • the cooling channels 5 are kept open by spacer strips 7.
  • the winding conductor ends of the last turn of each of the winding layers 1, 2 and 3 are led out of the winding arrangement in the form of axles 8.
  • the leads 8 carry an additional insulation 9 above the normal winding conductor insulation, which is usually designed for the full rated voltage of the transformer.
  • the additional insulation 9 extends into the respective end turn of the associated winding layer 1, 2 or 3 and is held there by, for example, three pairs of spacer strips 7.
  • the thickness of the additional insulation 9 is at nominal voltages from 200 kV in the order of the thickness of the spacer strips 7, so that the exit of the cooling channels 5 in the area of the diversion 8 would be practically closed without special measures in the area of the discharge line 8 via about two or more sectors formed by spacer strips 7.
  • the annular cross is maintained for them to strive for sectional shape.
  • the spacer strips 7 have so far been made reinforced over the entire winding circumference wherever they clamp a winding layer provided with a lead 8.
  • the spacer strips 7 are now reinforced, which abut one end of an additional insulation 9.
  • These reinforced spacer strips 7 have a shoulder 6 at their end abutting the additional insulation 9, by means of which they are adapted to the additional insulation 9 protruding into the cooling channel 5.
  • the spacer strips 7 which are supported on the reinforced spacer strips 7 via the insulating wall 4 are designed to be correspondingly weaker than the spacer strips 7 in the normal circumferential range.
  • the spacer strips 7 may also have different thicknesses within the diversion area.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Insulating Of Coils (AREA)
  • Coils Or Transformers For Communication (AREA)
  • Coils Of Transformers For General Uses (AREA)
EP85109066A 1984-08-02 1985-07-19 Enroulement en couches pour transformateurs Expired EP0170170B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT85109066T ATE30650T1 (de) 1984-08-02 1985-07-19 Lagenwicklung fuer transformatoren.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3428613 1984-08-02
DE19843428613 DE3428613A1 (de) 1984-08-02 1984-08-02 Lagenwicklung fuer transformatoren

Publications (2)

Publication Number Publication Date
EP0170170A1 true EP0170170A1 (fr) 1986-02-05
EP0170170B1 EP0170170B1 (fr) 1987-11-04

Family

ID=6242255

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85109066A Expired EP0170170B1 (fr) 1984-08-02 1985-07-19 Enroulement en couches pour transformateurs

Country Status (4)

Country Link
EP (1) EP0170170B1 (fr)
AT (1) ATE30650T1 (fr)
BR (1) BR8503642A (fr)
DE (2) DE3428613A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5130662A (en) * 1990-03-12 1992-07-14 Ntp Elektronik A/S Audio signal switching system
CN103270560A (zh) * 2011-01-04 2013-08-28 Abb技术有限公司 具有冷却通道的变压器绕组

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2246398A1 (de) * 1972-09-21 1974-03-28 Transformatoren Union Ag Lagenwicklung fuer transformatoren und drosselspulen
AT332934B (de) * 1973-12-08 1976-10-25 Transformatoren Union Ag Isolieranordnung fur ausleitungen von hochspannungswicklungen in transformatoren und drosseln
DE3035262A1 (de) * 1980-09-18 1982-03-25 Transformatoren Union Ag, 7000 Stuttgart Wicklung fuer transformatoren mit grosser nennleistung
EP0056580A1 (fr) * 1981-01-16 1982-07-28 Smit Transformatoren B.V. Enroulement pour un transformateur ou bobine réactance à sec refroidi par air et comportant des éléments d'espacement dans les canaux à air

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2246398A1 (de) * 1972-09-21 1974-03-28 Transformatoren Union Ag Lagenwicklung fuer transformatoren und drosselspulen
AT332934B (de) * 1973-12-08 1976-10-25 Transformatoren Union Ag Isolieranordnung fur ausleitungen von hochspannungswicklungen in transformatoren und drosseln
DE3035262A1 (de) * 1980-09-18 1982-03-25 Transformatoren Union Ag, 7000 Stuttgart Wicklung fuer transformatoren mit grosser nennleistung
EP0056580A1 (fr) * 1981-01-16 1982-07-28 Smit Transformatoren B.V. Enroulement pour un transformateur ou bobine réactance à sec refroidi par air et comportant des éléments d'espacement dans les canaux à air

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5130662A (en) * 1990-03-12 1992-07-14 Ntp Elektronik A/S Audio signal switching system
CN103270560A (zh) * 2011-01-04 2013-08-28 Abb技术有限公司 具有冷却通道的变压器绕组
CN103270560B (zh) * 2011-01-04 2016-04-20 Abb技术有限公司 变压器绕组和变压器

Also Published As

Publication number Publication date
ATE30650T1 (de) 1987-11-15
DE3428613A1 (de) 1986-02-13
DE3560927D1 (en) 1987-12-10
EP0170170B1 (fr) 1987-11-04
BR8503642A (pt) 1986-05-06

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