EP0102513B1 - Transformateur à sec avec enroulements fondus dans une résine de coulée - Google Patents

Transformateur à sec avec enroulements fondus dans une résine de coulée Download PDF

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Publication number
EP0102513B1
EP0102513B1 EP83107410A EP83107410A EP0102513B1 EP 0102513 B1 EP0102513 B1 EP 0102513B1 EP 83107410 A EP83107410 A EP 83107410A EP 83107410 A EP83107410 A EP 83107410A EP 0102513 B1 EP0102513 B1 EP 0102513B1
Authority
EP
European Patent Office
Prior art keywords
winding
winding parts
cast resin
air
parts
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.)
Expired
Application number
EP83107410A
Other languages
German (de)
English (en)
Other versions
EP0102513A1 (fr
Inventor
Gerhard Dipl.-Ing. Altmann
Friedrich Alber
Lothar Brzuska
Klaus Seeliger
Walter Schaich
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.)
Transformatoren Union AG
Original Assignee
Transformatoren Union 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 filed Critical Transformatoren Union AG
Priority to AT83107410T priority Critical patent/ATE17617T1/de
Publication of EP0102513A1 publication Critical patent/EP0102513A1/fr
Application granted granted Critical
Publication of EP0102513B1 publication Critical patent/EP0102513B1/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
    • H01F27/08—Cooling; Ventilating
    • 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
    • H01F27/30—Fastening or clamping coils, windings, or parts thereof together; Fastening or mounting coils or windings on core, casing, or other support
    • H01F27/306—Fastening or mounting coils or windings on core, casing or other support
    • 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
    • H01F27/327—Encapsulating or impregnating
    • 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
    • H01F27/327—Encapsulating or impregnating
    • H01F2027/328—Dry-type transformer with encapsulated foil winding, e.g. windings coaxially arranged on core legs with spacers for cooling and with three phases

Definitions

  • the invention relates to a dry transformer with windings cast in casting resin with a main stray channel designed as a cooling channel and with at least one additional axial cooling channel between the individual coaxially arranged winding parts of one or more windings. preferably in the Wick-Jung lying radially outside the main scattering channel.
  • a cast-resin-insulated transformer winding with additional axial cooling channels that are molded into the cast-resin body is already known.
  • This a transformer winding enveloping cast resin body is preferably arranged radially outside the main scattering channel.
  • the manufacture of cast resin bodies enveloping such windings is very complex in terms of manufacturing technology. This is especially true if the radial dimensions of the additional cooling channels are kept small.
  • this known winding design does not change the given relationship between the piece weight of the cast resin body and the nominal power of the transformer. In principle, nothing changes even if the windings are axially divided into several partial windings. In the case of technically usable and sufficiently economical transformers, the nominal power must therefore grow faster than the unit weight of the cast resin body.
  • the invention is therefore based on the object of designing the winding structure for cast-resin-insulated transformer windings with additional cooling ducts in such a way that cooling ducts are formed solely by the arrangement of the parts, and all parts can be produced using known methods without particular difficulties, and yet without increasing the piece weights of the cast resin body a significant increase in the maximum possible unit performance of the transformers provided with this winding structure is guaranteed.
  • each of the coaxially arranged winding parts is cast in a separate mold with casting resin, that these winding parts have cross-sectional dimensions which keep cooling channel-forming clearances between adjacent winding parts, that in the circumferential direction by 180 ° reinforcements of the cast resin layer offset against one another on the outer jacket of the outermost cast resin body carry mains connection terminals and tap terminals and also accommodate axially extending connecting conductors for interconnecting the winding parts and that the winding parts belonging to the same winding are clamped between all windings or winding parts and then mounted together in front of the End faces of the cast resin body are galvanically connected to each other.
  • the winding lying radially outside the main scattering channel has an additional cooling channel is the high-voltage winding and that the insulation of the winding part lying between the main scattering channel and the additional cooling channel for the full nominal voltage and the insulation of the outside of the additional cooling channel Winding part is designed for about half the nominal voltage.
  • the coaxially arranged winding parts of this high-voltage winding are each constructed from single coils connected in series in such a way that the galvanic connections of these single coils are accommodated in the inner winding part in a strip formed by the casting opening of the casting mold on the outer jacket of the cast resin body, and in the outer winding part in the Mains connection reinforcement of the cast resin body.
  • these winding parts are themselves electrically connected in series and the input turns of all winding parts are spatially in the same winding end.
  • the winding conductor ends used to connect the coaxially arranged winding parts are located in the region of the end faces of the cast resin bodies in insulating tubes which simultaneously serve as a seal between the winding conductor end and a mold during the casting process.
  • the cross section of the cast resin body is advantageously approximated ring-shaped. Support strips are not required and would also adversely affect the electrical strength in the associated cooling duct.
  • Dry-type transformers constructed in accordance with the invention are very advantageous because they allow an increase in the unit power of cast-resin-insulated transformers while maintaining the manufacturing facilities and manufacturing methods that were previously customary for their manufacture.
  • An undervoltage winding 2 (winding W1) and an high-voltage winding (winding WII) composed of an inner winding part 4 and an outer winding part 5 are arranged radially from the inside to the outside of a laminated iron core 1.
  • the undervoltage winding 2 and the inner winding part 4 include a main stray channel 3, which also acts as a cooling channel.
  • the coaxially intertwined winding parts 4 and 5 of the high-voltage winding flank an additional cooling channel 6.
  • the undervoltage winding 2 and the winding parts 4 and 5 are held in their installed position by at least partially elastic blocks 7, the blocks 7 engaging on the one hand with lugs in the main stray duct 3 and the additional cooling duct 6 and on the other hand in a manner not shown in detail on one also support the iron core of the transformer that holds the press frame together.
  • the elastic blocks 7 are distributed approximately uniformly over the circumference of the undervoltage winding 2 and the winding parts 4 and 5 and preferably form angles of approximately 45 ° with the longitudinal axis of the transformer.
  • FIGS. 3 and 4 show the arrangement of mains connection terminals 8 and tap terminals 9.
  • mains connection terminals 8 there are also coil connections 11 for the galvanic connection of the individual coils in the winding parts 4 and 5 and axially extending ones Connection conductor for the electrical connection of the winding parts 4. and 5 housed.
  • the axially extending connecting conductors are led out of the cast resin bodies through the end faces and connected to one another by means of insulated bridges 12 to form a so-called single-layer circuit of the two winding parts 4 and 5.
  • Reinforcements 10 of the cast resin layer on the outer winding part 5 of the high-voltage winding serve to ensure the required insulation distances within the cast resin body.
  • the winding conductor ends led out of the cast resin bodies in the axial direction through the end faces lie in hoses made of elastic insulating material or of another suitable insulating material which at the same time effects the seal between the winding conductors and the casting mold.
  • the mains connection terminals 8 lie on thorn-like projections cast onto the outer cast resin body and carry a switching strip 13 through which the high-voltage windings of the transformer, preferably in a delta connection, are connected to one another.
  • the bridges 12 together with the axially extending connecting conductors within one of the reinforcements 10 serve for the above-mentioned single-layer switching of the winding parts 4 and 5.
  • the single-layer switching enforces a uniform voltage load of approximately half the nominal voltage over the entire length of the additional cooling channel 6 .
  • the winding part 4 preferably carries the higher voltage, so that the insulation of the winding part 5, apart from the high-voltage side mains connection, is only to be dimensioned for half the nominal voltage.
  • the tap windings are provided in the middle individual coils of the outer winding part 5 of the high-voltage winding. Instead of two, more taps are possible.

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)

Claims (7)

1. Transformateur à sec comportant des enroulements (WI, Wil) noyés dans une résine moulée et comportant un canal de fuite principal (3) réalisé sous la forme d'un canal de refroidissement et au moins un canal de refroidissement axial supplémentaire (6) disposé entre les différents éléments d'enroulement (4, 5) disposés coaxialement, d'un ou de plusieurs enroulements (WI, WII), de préférence dans l'enroulement (WII) situé radialement à l'extérieur du canal de fuite principal (3), caractérisé par le fait :
- que chacun des éléments d'enroulement (4, 5) montés coaxialement est enrobé par la résine moulée dans un moule de coulée particulier.
- que ces éléments d'enroulement (4, 5) possèdent, en coupe transversale, des dimensions qui permettent de conserver des écartements délimitant des canaux de refroidissement, entre des éléments d'enroulement (4, 5) mutuellement voisins,
- que les renforcements (10), décalés mutuellement de 180° suivant la direction circonférentielle, de la couche de résine moulée sur l'enveloppe extérieure du corps extérieur de résine moulée (5) portent des bornes (8) de raccordement au réseau et des bornes formant prises (9) et logent en outre les conducteurs de liaison axiaux servant à réaliser le câblage des éléments d'enroulement (4, 5), et
- que les éléments d'enroulement (4, 5) appartenant respectivement au même enroulement (WII) sont montés moyennant le serrage de blocs élastiques (7) communs entre tous les enroulements (WI, Wll) ou des éléments d'enroulement (4, 5) et sont ensuite reliés entre eux galvanique- ment sur l'avant des faces frontales des corps en résine moulée.
2. Transformateur à sec suivant la revendication 1, caractérisé par le fait que l'enroulement (Wll), qui est situé radialement à l'extérieur du canal de fuite principal (3) et qui possède un canal de refroidissement supplémentaire (6), est l'enroulement de haute tension et que l'isolant de l'élément d'enroulement (4), situé entre le canal de fuite principal (3) et le canal de refroidissement supplémentaire (6), est conçu pour la tension nominale complète. et que l'isolant de l'élément d'enroulement (5) situé à l'extérieur du canal de refroidissement supplémentaire (6) est conçu pour approximativement la moitié de la tension nominale.
3. Transformateur à sec suivant l'une des revendications 1 ou 2, caractérisé par le fait que les éléments d'enroulement (4. 5) montés coaxialement selon une disposition en couches individuelles sont branchés électriquement en série et que les spires d'entrée de tous les éléments. d'enroulement (4, 5) sont situées dans des extrémités d'enroulement voisines dans l'espace.
4. Transformateur à sec suivant l'une des revendications 1 à 3, caractérisé par le fait que les éléments d'enroulement (4. 5) disposés coaxialement sont formés respectivement par des bobines individuelles branchées en série, et que les liaisons galvaniques de ces bobines individuelles sont logées, dans le cas de l'élément de bobinage intérieur (4), dans une baguette formée par l'ouverture de coulée du moule, dans l'enveloppe extérieure du corps en résine moulée et sont 1 situées, dans le cas de l'enroulement extérieur (5), dans le renfoncement (10), portant les bornes (8) de raccordement au réseau, du corps en résine moulée.
5. Transformateur à sec suivant l'une des revendications 1 à 4, caractérisé par le fait que les éléments d'enroulement (4, 5) montés coaxialement ne se contactent pas mutuellement dans leur positon de montage et que des voies d'air servant à l'isolation sont subsistent.
6. Transformateur à sec suivant l'une des revendications 1 à 5, caractérisé par le fait que les extrémités des conducteurs d'enroulement, qui servent à relier les éléments d'enroulement (4, 5) montés coaxialement, sont situées dans la zone des faces frontales des corps en résine moulée dans des tuyaux isolants qui, pendant le processus de coulée, servent simultanément à réaliser l'étanchéité entre l'extrémité du conducteur d'enroulement et un moule de coulée.
7. Transformateur à sec suivant l'une des revendications 1 à 6, caractérisé par le fait que la section transversale du corps en résine moulée possède une forme approximativement annulaire.
EP83107410A 1982-08-06 1983-07-27 Transformateur à sec avec enroulements fondus dans une résine de coulée Expired EP0102513B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83107410T ATE17617T1 (de) 1982-08-06 1983-07-27 Trockentransformator mit in giessharz eingegossenen wicklungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3229480 1982-08-06
DE19823229480 DE3229480A1 (de) 1982-08-06 1982-08-06 Trockentransformator mit in giessharz eingegossenen wicklungen

Publications (2)

Publication Number Publication Date
EP0102513A1 EP0102513A1 (fr) 1984-03-14
EP0102513B1 true EP0102513B1 (fr) 1986-01-22

Family

ID=6170340

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83107410A Expired EP0102513B1 (fr) 1982-08-06 1983-07-27 Transformateur à sec avec enroulements fondus dans une résine de coulée

Country Status (6)

Country Link
US (1) US4523171A (fr)
EP (1) EP0102513B1 (fr)
JP (1) JPS5944810A (fr)
AT (1) ATE17617T1 (fr)
DE (2) DE3229480A1 (fr)
NO (1) NO159893C (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6261437B1 (en) 1996-11-04 2001-07-17 Asea Brown Boveri Ab Anode, process for anodizing, anodized wire and electric device comprising such anodized wire
US6279850B1 (en) 1996-11-04 2001-08-28 Abb Ab Cable forerunner
US6357688B1 (en) 1997-02-03 2002-03-19 Abb Ab Coiling device
US6369470B1 (en) 1996-11-04 2002-04-09 Abb Ab Axial cooling of a rotor
US6376775B1 (en) 1996-05-29 2002-04-23 Abb Ab Conductor for high-voltage windings and a rotating electric machine comprising a winding including the conductor
US6396187B1 (en) 1996-11-04 2002-05-28 Asea Brown Boveri Ab Laminated magnetic core for electric machines
US6417456B1 (en) 1996-05-29 2002-07-09 Abb Ab Insulated conductor for high-voltage windings and a method of manufacturing the same
US6429563B1 (en) 1997-02-03 2002-08-06 Abb Ab Mounting device for rotating electric machines
US6439497B1 (en) 1997-02-03 2002-08-27 Abb Ab Method and device for mounting a winding
US6465979B1 (en) 1997-02-03 2002-10-15 Abb Ab Series compensation of electric alternating current machines
US6525504B1 (en) 1997-11-28 2003-02-25 Abb Ab Method and device for controlling the magnetic flux in a rotating high voltage electric alternating current machine
US6646363B2 (en) 1997-02-03 2003-11-11 Abb Ab Rotating electric machine with coil supports
US6801421B1 (en) 1998-09-29 2004-10-05 Abb Ab Switchable flux control for high power static electromagnetic devices
US6822363B2 (en) 1996-05-29 2004-11-23 Abb Ab Electromagnetic device
US6825585B1 (en) 1997-02-03 2004-11-30 Abb Ab End plate
US6831388B1 (en) 1996-05-29 2004-12-14 Abb Ab Synchronous compensator plant

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4866409A (en) * 1987-12-03 1989-09-12 Mitsubishi Denki Kabushiki Kaisha Resin-crack prevented high-voltage transformer
GB2343299B (en) * 1995-04-06 2000-06-07 D Innovation Sur Le Transport Solid insulation transformer
US5656984A (en) * 1995-04-06 1997-08-12 Centre D'innovation Sur Le Transport D'energie Du Quebec Solid insulation transformer
WO1996031888A1 (fr) * 1995-04-06 1996-10-10 Centre D'innovation Sur Le Transport D'energie Du Quebec Transformateur a isolation a corps solide
DE19809572C2 (de) * 1998-03-05 2000-06-21 Siemens Ag Gießharz-Transformator
DE19854439C2 (de) * 1998-11-25 2000-10-12 Siemens Ag Transformator - insbesondere Giessharztransformator
US7023312B1 (en) 2001-12-21 2006-04-04 Abb Technology Ag Integrated cooling duct for resin-encapsulated distribution transformer coils
US7808360B1 (en) 2004-12-20 2010-10-05 Abb Technology Ag Cushioning materials and method for applying the same to resin cast transformers
DE102005015785A1 (de) * 2005-04-01 2006-11-16 Siemens Ag Transformator mit elektrischer Abschirmung
DE102007053685A1 (de) * 2007-11-10 2009-05-14 Abb Technology Ag Herstellungsverfahren für eine mehrlagige Transformatorwicklung mit Isolationsschicht
CA2766372A1 (fr) * 2009-06-30 2011-01-06 Abb Technology Ag Transformateur de type sec avec refroidissement ameliore
WO2011048039A2 (fr) * 2009-10-19 2011-04-28 Abb Technology Ag Transformateur
EP2333798B1 (fr) * 2009-12-08 2015-08-26 ABB Technology AG Système d'échangeur de chaleur pour transformateurs non immergés
CA2809897A1 (fr) * 2010-09-01 2012-03-08 Abb Technology Ag Transformateur refroidi comportant au moins un enroulement en bande
DE102012205784A1 (de) * 2012-04-10 2013-10-10 Gottfried Wilhelm Leibniz Universität Hannover Spannungswandler
CN110323050B (zh) * 2018-03-28 2022-04-05 台达电子工业股份有限公司 高压线圈、高压线圈制作方法与变压器
CN112071604B (zh) * 2020-08-07 2021-11-19 华翔翔能科技股份有限公司 一种干变高压浇注模具

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2677810A (en) * 1950-10-14 1954-05-04 Gen Electric Step voltage regulator
US2685677A (en) * 1950-11-29 1954-08-03 Gen Electric Cooling system for electrical apparatus
US2783441A (en) * 1952-07-25 1957-02-26 Gen Electric Transformer
US2756397A (en) * 1952-07-25 1956-07-24 Gen Electric Transformer
DE2104112C3 (de) * 1971-01-29 1979-05-10 Transformatoren Union Ag, 7000 Stuttgart Verfahren zur Herstellung von Kühlkanälen in einer in Kunstharz vergossenen Wicklung
DE2246235B2 (de) * 1972-09-21 1978-08-24 Transformatoren Union Ag, 7000 Stuttgart Trockentransformator
GB1426135A (en) * 1974-03-19 1976-02-25 Novolipetsky Metall Z Lining metallurgical vessels
US4129938A (en) * 1975-08-25 1978-12-19 Hariolf Hagenbucher Method of making tubular coils with cooling and insulating channels
DE3138909A1 (de) * 1981-09-30 1983-04-14 Transformatoren Union Ag, 7000 Stuttgart Transformator mit vollstaendig in giessharz eingebetteten wicklungen

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, unexamined applications, E Section, Vol. 5, No. 27, February 18, 1981 THE PATENT OFFICE JAPANESE GOVERNMENT, page 111 E 46 *
PATENT ABSTRACTS OF JAPAN, unexamined applications, E Section, Vol. 5, No. 30, February 24, 1981 THE PATENT OFFICE JAPANESE GOVERNMENT, page 31 E 47 *

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6831388B1 (en) 1996-05-29 2004-12-14 Abb Ab Synchronous compensator plant
US6376775B1 (en) 1996-05-29 2002-04-23 Abb Ab Conductor for high-voltage windings and a rotating electric machine comprising a winding including the conductor
US6417456B1 (en) 1996-05-29 2002-07-09 Abb Ab Insulated conductor for high-voltage windings and a method of manufacturing the same
US6822363B2 (en) 1996-05-29 2004-11-23 Abb Ab Electromagnetic device
US6261437B1 (en) 1996-11-04 2001-07-17 Asea Brown Boveri Ab Anode, process for anodizing, anodized wire and electric device comprising such anodized wire
US6279850B1 (en) 1996-11-04 2001-08-28 Abb Ab Cable forerunner
US6369470B1 (en) 1996-11-04 2002-04-09 Abb Ab Axial cooling of a rotor
US6396187B1 (en) 1996-11-04 2002-05-28 Asea Brown Boveri Ab Laminated magnetic core for electric machines
US6439497B1 (en) 1997-02-03 2002-08-27 Abb Ab Method and device for mounting a winding
US6465979B1 (en) 1997-02-03 2002-10-15 Abb Ab Series compensation of electric alternating current machines
US6646363B2 (en) 1997-02-03 2003-11-11 Abb Ab Rotating electric machine with coil supports
US6429563B1 (en) 1997-02-03 2002-08-06 Abb Ab Mounting device for rotating electric machines
US6825585B1 (en) 1997-02-03 2004-11-30 Abb Ab End plate
US6357688B1 (en) 1997-02-03 2002-03-19 Abb Ab Coiling device
US6525504B1 (en) 1997-11-28 2003-02-25 Abb Ab Method and device for controlling the magnetic flux in a rotating high voltage electric alternating current machine
US6801421B1 (en) 1998-09-29 2004-10-05 Abb Ab Switchable flux control for high power static electromagnetic devices

Also Published As

Publication number Publication date
NO832374L (no) 1984-02-07
JPS5944810A (ja) 1984-03-13
NO159893C (no) 1989-02-15
ATE17617T1 (de) 1986-02-15
DE3229480A1 (de) 1984-02-09
NO159893B (no) 1988-11-07
US4523171A (en) 1985-06-11
EP0102513A1 (fr) 1984-03-14
DE3361926D1 (en) 1986-03-06

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