EP0075796A1 - Transformateur avec enroulements encastrés dans de la résine moulée - Google Patents

Transformateur avec enroulements encastrés dans de la résine moulée Download PDF

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Publication number
EP0075796A1
EP0075796A1 EP82108563A EP82108563A EP0075796A1 EP 0075796 A1 EP0075796 A1 EP 0075796A1 EP 82108563 A EP82108563 A EP 82108563A EP 82108563 A EP82108563 A EP 82108563A EP 0075796 A1 EP0075796 A1 EP 0075796A1
Authority
EP
European Patent Office
Prior art keywords
channels
winding
transformer according
cooling channels
insulating gas
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
EP82108563A
Other languages
German (de)
English (en)
Other versions
EP0075796B1 (fr
Inventor
Richard Dr. Pfeiffer
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 AT82108563T priority Critical patent/ATE17172T1/de
Publication of EP0075796A1 publication Critical patent/EP0075796A1/fr
Application granted granted Critical
Publication of EP0075796B1 publication Critical patent/EP0075796B1/fr
Expired legal-status Critical Current

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    • 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
    • H01F27/33—Arrangements for noise damping
    • 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
    • H01F27/20—Cooling by special gases or non-ambient air
    • 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
    • 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 transformers with an iron core and with high-voltage and low-voltage windings completely embedded in casting resin and with cooling channels arranged in the casting resin that holds and insulates the casting resin.
  • electrically conductive water serves as the coolant.
  • This electrically conductive water advantageously serves at the same time as electrical shielding, but limits the use of the known arrangement to transformers with relatively low nominal voltages, because the use in transformers for higher nominal voltages requires uneconomically large wall thicknesses for the cast resin bodies. Due to the large wall thicknesses, the cast resin bodies are also relatively susceptible to cracking and also act undesirably as thermal insulators.
  • a cast resin transformer in which all windings of a three-phase system are enclosed in a cast resin block, which on the one hand has openings for receiving the core legs of an iron core and, in addition, a recess for receiving one in front of the end faces of the windings has lower and upper yokes.
  • the troughs receiving the yokes are sealed off from the outside by caps.
  • the invention is based on the object of providing an arrangement for cast-resin-insulated transformers which, on the one hand, enables effective construction to provide a compact structure for larger power ratings and, moreover, also allows use at higher characteristic voltages.
  • this object is achieved for a transformer of the type mentioned at the outset in that, in addition to and separately from the cooling ducts, at least in the main scattering duct, further ducts enclosed by the casting resin are provided, and in that these additional ducts are filled with an insulating gas.
  • An advantageous embodiment of the invention is that the high-voltage winding penetrated inside the cooling channels is surrounded on all sides by channels filled with insulating gas, and that the undervoltage winding lying radially between the high-voltage winding and the iron core is only on its outer jacket and its end faces by channels filled with insulating gas is included and that only cooling channels are provided within a cast resin body common to the undervoltage winding and each iron core, and in addition that the connecting conductors of the high-voltage winding are essentially insulated by insulating gas.
  • the high-voltage winding expediently consists of coils spatially arranged axially one above the other, electrically connected in series and wound from coil-wide sheet metal strip, and the undervoltage winding is represented by a spirally wound sheet-metal strip, the width of which is equal to the axial coil length.
  • a coolant flowing through the cooling channels is electrically insulating and versa in the cooling channels and that SF 6, which is under pressure, serves as insulating gas in the additional channels.
  • the cooling channels and the additional channels are each connected to an independent channel system, the internal pressure of which can be set on a heat exchanger and / or reserve tank assigned to the respective channel system, the internal pressure in the cooling channels always being independent of the operating state between the ambient pressure of the transformer and the pressure lies in the additional channels.
  • the surrounding walls are reinforced with glass fibers.
  • the cast resin bodies containing the high-voltage and low-voltage windings are resiliently clamped in relation to the iron core and thereby serve as insulation walls for noise emitted by the iron core.
  • transformers according to the invention is very advantageous because, by reducing the amount of cast resin required and the absolute winding dimensions, it extends the field of application of cast-resin-insulated transformers in the direction of larger rated powers and also enables them to be used at higher than previously controllable rated voltages.
  • the actual undervoltage winding 2 consists of sheet metal strip, the width of which is equal to the winding length and, after winding, is cast into a body 4 made of casting resin. 2 cooling channels 5 are provided in and around the undervoltage winding.
  • a high-voltage winding which in turn comprises undervoltage winding 2, is constructed from a large number of coils 6 arranged axially one above the other.
  • the individual coils 6 are wound from coil-wide sheet metal strip and electrically connected in series.
  • the coils 6 are mechanically connected to one another by a body 7 made of cast resin.
  • the body 7 and the coils 6 together form a grid of radial cooling channels 8 and axial cooling channels 9.
  • the annular end faces of the body 7 comprising the coils 6 are gas-tightly covered by locking rings 10, 10 sealing rings 12 being clamped between the body 7 and the locking rings.
  • the cavity of the locking rings 10 is connected via channels 11 to the grid from the cooling channels 8 and 9 and at the same time serves as a collecting chamber for the supply and discharge of the coolant into the high-voltage winding.
  • the iron core from the core legs 1 and the yokes 3 as well as the undervoltage winding 2 in the body 4 and the upper voltage winding in the body 7 constructed from the coils 6 are encapsulated to the outside by a jacket 14 and a cover 13.
  • the jacket 14 forms with the outer jacket of the body 7 and the cover 13 with the locking rings 10 channels 15 through which, not shown, preferably to the existing casting resin body-shaped, spacers are kept open.
  • support walls 17 are provided for clamping the undervoltage winding 2.
  • channel extensions 16 are located between them and the outer wall of the associated cover, which are directly connected to the channels 15.
  • the support walls 17 form chambers 18 in front of the end faces of the undervoltage winding 2.
  • the chambers 18 are connected to the cooling channels 5 in the undervoltage winding 2 and open in the direction of the core legs 1 and the yokes 3 and serve as coolant collecting containers for the discharge and supply p coolant to Unters annungswicklung 2 and the iron core.
  • the iron core from the core legs 1 and the yokes 3 is resiliently clamped between the covers 13 and is thus decoupled from the windings in terms of vibration technology.
  • the chambers in the closure rings 10 and the chambers 18 are connected in a manner not shown with a compensating vessel and with a recooling device for the coolant flowing through the cooling channels 5, 8 and 9.
  • a non-flammable liquid is expediently used as the coolant, the boiling temperature of which, at the operating pressure provided in the channels, is close to the operating temperature of the undervoltage winding 2 and the high-voltage winding.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
  • Insulating Of Coils (AREA)
  • Transformer Cooling (AREA)
EP82108563A 1981-09-30 1982-09-16 Transformateur avec enroulements encastrés dans de la résine moulée Expired EP0075796B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT82108563T ATE17172T1 (de) 1981-09-30 1982-09-16 Transformator mit in giessharz eingebetteten wicklungen.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813138909 DE3138909A1 (de) 1981-09-30 1981-09-30 Transformator mit vollstaendig in giessharz eingebetteten wicklungen
DE3138909 1981-09-30

Publications (2)

Publication Number Publication Date
EP0075796A1 true EP0075796A1 (fr) 1983-04-06
EP0075796B1 EP0075796B1 (fr) 1985-12-27

Family

ID=6143053

Family Applications (1)

Application Number Title Priority Date Filing Date
EP82108563A Expired EP0075796B1 (fr) 1981-09-30 1982-09-16 Transformateur avec enroulements encastrés dans de la résine moulée

Country Status (5)

Country Link
US (1) US4488134A (fr)
EP (1) EP0075796B1 (fr)
JP (1) JPS5871609A (fr)
AT (1) ATE17172T1 (fr)
DE (2) DE3138909A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0102513A1 (fr) * 1982-08-06 1984-03-14 Transformatoren Union Aktiengesellschaft Transformateur à sec avec enroulements fondus dans une résine de coulée
EP0159387A1 (fr) * 1984-04-03 1985-10-30 Hydro-Quebec Transformateur de distribution avec circuit magnétique enroulé
EP0766273A3 (fr) * 1995-09-28 1997-07-16 Makoto Yamamoto Structure de transformateur
US6204243B1 (en) 1993-09-01 2001-03-20 Novatis Ag Pharmaceutical preparations for the targeted treatment of crohn's disease and ulcerative colitis
WO2010000005A1 (fr) * 2008-06-30 2010-01-07 Coil Innovation Gmbh Bobine d'arrêt pour réseaux de distribution d'énergie électrique avec émissions sonores diminuées

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1992016955A1 (fr) * 1991-03-21 1992-10-01 Siemens Aktiengesellschaft Procede de production de bobines en resine de coulee et bobines en resine de coulee ainsi produites
US5267393A (en) * 1993-03-17 1993-12-07 Square D Company Method of manufacturing a strip wound coil to eliminate lead bulge
US5383266A (en) * 1993-03-17 1995-01-24 Square D Company Method of manufacturing a laminated coil to prevent expansion during coil loading
US5461772A (en) * 1993-03-17 1995-10-31 Square D Company Method of manufacturing a strip wound coil to reinforce edge layer insulation
US5396210A (en) * 1993-03-17 1995-03-07 Square D Company Dry-type transformer and method of manufacturing
JP2001351820A (ja) * 2000-06-07 2001-12-21 Mitsubishi Electric Corp 電気機器
US7023312B1 (en) 2001-12-21 2006-04-04 Abb Technology Ag Integrated cooling duct for resin-encapsulated distribution transformer coils
JP4466684B2 (ja) * 2007-06-12 2010-05-26 トヨタ自動車株式会社 リアクトル
DE102008055882A1 (de) * 2008-11-03 2010-05-06 Siemens Aktiengesellschaft Haltevorrichtung für eine Gießharztransformatoren-Wicklung
US7911308B2 (en) * 2008-11-26 2011-03-22 Rippel Wally E Low thermal impedance conduction cooled magnetics
US8122946B2 (en) * 2009-06-16 2012-02-28 Uop Llc Heat exchanger with multiple channels and insulating channels
US8631858B2 (en) * 2009-06-16 2014-01-21 Uop Llc Self cooling heat exchanger with channels having an expansion device
US8118086B2 (en) 2009-06-16 2012-02-21 Uop Llc Efficient self cooling heat exchanger
CN102473508B (zh) * 2009-06-30 2014-10-15 Abb技术有限公司 具有改进冷却的干式变压器
US7834736B1 (en) 2009-07-31 2010-11-16 Abb Technology Ag Dry type pole-mounted transformer
WO2011048039A2 (fr) * 2009-10-19 2011-04-28 Abb Technology Ag Transformateur
KR101820644B1 (ko) 2010-04-07 2018-01-22 에이비비 슈바이쯔 아게 실외 건식 변압기
US10826297B2 (en) * 2018-11-06 2020-11-03 General Electric Company System and method for wind power generation and transmission in electrical power systems

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2872651A (en) * 1955-11-29 1959-02-03 Gen Electric Transformer cooling system
DE1230902B (de) * 1962-05-16 1966-12-22 Liebknecht Transformat Lagenwicklung fuer Hochspannungstransformatoren
DE2826299A1 (de) * 1978-06-15 1979-12-20 Transformatoren Union Ag Mehrphasentransformator zur leistungsuebertragung in einem versorgungsnetz

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA525065A (fr) * 1956-05-15 K. Paluev Konstantin Systeme de refroidissement pour appareil electrique
DE762171C (de) * 1937-11-17 1954-05-31 Siemens Schuckertwerke A G Mit festen Isolierstoffen allseitig verschalte Scheibenspulenwicklung fuer Transformatoren
US3028566A (en) * 1958-10-08 1962-04-03 Gen Electric Cooling system for electrical induction apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2872651A (en) * 1955-11-29 1959-02-03 Gen Electric Transformer cooling system
DE1230902B (de) * 1962-05-16 1966-12-22 Liebknecht Transformat Lagenwicklung fuer Hochspannungstransformatoren
DE2826299A1 (de) * 1978-06-15 1979-12-20 Transformatoren Union Ag Mehrphasentransformator zur leistungsuebertragung in einem versorgungsnetz

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0102513A1 (fr) * 1982-08-06 1984-03-14 Transformatoren Union Aktiengesellschaft Transformateur à sec avec enroulements fondus dans une résine de coulée
EP0159387A1 (fr) * 1984-04-03 1985-10-30 Hydro-Quebec Transformateur de distribution avec circuit magnétique enroulé
US6204243B1 (en) 1993-09-01 2001-03-20 Novatis Ag Pharmaceutical preparations for the targeted treatment of crohn's disease and ulcerative colitis
EP0766273A3 (fr) * 1995-09-28 1997-07-16 Makoto Yamamoto Structure de transformateur
WO2010000005A1 (fr) * 2008-06-30 2010-01-07 Coil Innovation Gmbh Bobine d'arrêt pour réseaux de distribution d'énergie électrique avec émissions sonores diminuées
US8339234B2 (en) 2008-06-30 2012-12-25 Coil Holding Gmbh Inductance coil for electric power grids with reduced sound emission

Also Published As

Publication number Publication date
ATE17172T1 (de) 1986-01-15
EP0075796B1 (fr) 1985-12-27
DE3138909A1 (de) 1983-04-14
US4488134A (en) 1984-12-11
DE3268149D1 (en) 1986-02-06
JPS5871609A (ja) 1983-04-28

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