EP2866235A1 - Transformateurs haute tension - Google Patents

Transformateurs haute tension Download PDF

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Publication number
EP2866235A1
EP2866235A1 EP20130005035 EP13005035A EP2866235A1 EP 2866235 A1 EP2866235 A1 EP 2866235A1 EP 20130005035 EP20130005035 EP 20130005035 EP 13005035 A EP13005035 A EP 13005035A EP 2866235 A1 EP2866235 A1 EP 2866235A1
Authority
EP
European Patent Office
Prior art keywords
barrier
voltage transformer
coil
transformer according
barrier structure
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
EP20130005035
Other languages
German (de)
English (en)
Other versions
EP2866235B1 (fr
Inventor
Benjamin Weber
Jens Tepper
Tobias Asshauer
Udo Chudobba
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.)
ABB Schweiz AG
Original Assignee
ABB Technology 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 ABB Technology AG filed Critical ABB Technology AG
Priority to EP13005035.4A priority Critical patent/EP2866235B1/fr
Priority to PL13005035T priority patent/PL2866235T3/pl
Priority to CA2866054A priority patent/CA2866054C/fr
Priority to US14/515,102 priority patent/US9478350B2/en
Priority to CN201410564835.XA priority patent/CN104575988B/zh
Publication of EP2866235A1 publication Critical patent/EP2866235A1/fr
Application granted granted Critical
Publication of EP2866235B1 publication Critical patent/EP2866235B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H01F27/32—Insulating of coils, windings, or parts thereof
    • 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
    • H01F27/322—Insulating of coils, windings, or parts thereof the insulation forming channels for circulation of the fluid
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F5/00—Coils
    • H01F5/06—Insulation of windings
    • 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 high voltage transformer, comprising a transformer core with at least two axially parallel core loops, on each of which a hollow cylindrical coil is arranged, each with at least one electrical winding
  • intermediate barriers between adjacent coils are essentially plates made of an insulating material, which are arranged between the coils and which allow by a correspondingly extended discharge path along the surface thereof to arrange the respective coils with a correspondingly smaller distance from each other.
  • a high-voltage transformer of the aforementioned type This is characterized in that the respective surface regions of the coils have a respective radially externally integrated electrically insulating barrier structure at least in subregions of mutually facing surfaces adjacent coils arranged.
  • a respective barrier structure typically includes the entire axial length of a coil, but may also be somewhat shortened or lengthened as needed.
  • different opposite surface areas result.
  • two barrier structures are provided, for example for the middle coil, arranged radially on the outside, wherein a barrier structure arranged radially on the outside is required for each of the two outer coils.
  • each barrier In the case of a triangular transformer core, each barrier would have two barrier structures offset by 60 ° from each other, which should be realized by an overarching barrier structure.
  • each of the two coils in the region to the adjacent coil would be provided with a barrier structure.
  • the barrier structures are designed such that the voltage difference occurring between the electrical windings of the adjacent coils during operation is held without an additional barrier wall arranged between the coils.
  • An integrated barrier structure advantageously reduces the field strength loading prevailing between the coils in such a way that no further intermediate barrier is necessary any more.
  • a barrier structure can be thought of as a lens-like attachment to the radially outer surface of a coil.
  • a barrier structure has already been integrated into the coil during the production process, similar to the cooling channels known to those skilled in the art, which, however, are not arranged on the surface of the coil but between radially adjacent coil segments.
  • the mechanical stability of a respective transformer is advantageously increased because a mechanically labile construction of one or more barrier plates arranged between the coils has been dispensed with.
  • all the connections of the coils can be guided without geometric impairments.
  • the barrier structures comprise axially extending strips which carry a barrier wall arranged radially above them.
  • a barrier wall arranged radially above them.
  • Such a concept is characterized by a simple manufacturing method and a high mechanical stability.
  • a sufficiently stable material for the strips for example, offers a glass fiber composite material.
  • the barrier wall is at least partially wound from a band-like material.
  • a belt-like material such as a resin impregnated glass fiber reinforced fiber roving, which is heated after completion of the winding process of a coil and thereafter forms a hardened structure, is known in winding coils of high voltage transformers for isolation and stabilization purposes.
  • it is therefore provided in a variant to fix the radially outer barrier structure with such a material or even to wrap it at least partially.
  • this achieves both high mechanical strength and good insulation capability.
  • the barrier wall at least partially consists of a prefabricated cylindrical element, for example an insulating half-shell.
  • a prefabricated cylindrical element for example an insulating half-shell.
  • Such cylinder or shell elements can be easily integrated during the winding process of a coil and have proven themselves, for example, in the integration of cooling channels.
  • a plurality of radially adjacent layers of strips and barrier walls are provided at least in regions.
  • the barrier structure of at least one coil is formed over its entire circumference.
  • a 360 ° encircling barrier structure is characterized in particular by a simpler manufacturing, on the other hand, a slightly increased space is needed If this space is available at a respective transformer, can in this way simplify the production of the coils in an advantageous manner and it In addition, it is no longer necessary to pay attention to alignment of the barrier structure relative to the transformer core.
  • the barrier structure of at least one coil is not formed over its entire circumference, wherein the Cross-section of the barrier structure is at its two outer ends stepped similar pronounced.
  • This is a variant which can be realized in a particularly simple manner, for example by means of a plurality of strips with a radially attached shell element, wherein the two outer steps are formed by a respective side wall of the respective outer strips.
  • the barrier structure of at least one coil is not formed over its entire circumference, wherein the cross section of the barrier structure merges flat at its two outer ends into the surface of the coil.
  • This variant is particularly suitable for at least partially wound barrier walls, wherein a respective insulating strip (18, 20, 22, 52, 72) then runs approximately tangentially between the upper edge of a respective outer strip and the surface of the respective coil.
  • a barrier structure is very similar to the structure of cooling channels arranged between radially adjacent coil segments, for example in the scattering channel. In this case, the chimney effect is advantageously utilized.
  • At least one of the barrier structures projects beyond at least one axial end of the respective coil. This is useful, for example, for controlling the air conditions at the ends of the respective cooling channels in order to increase their cooling effect.
  • Fig. 1 shows an exemplary inventive high-voltage transformer in a sectional top view 10.
  • legs 12, 14, 16 of a transformer core each have a hollow cylindrical coil 18, 20, 22 are arranged.
  • Each coil 18, 20, 22 has a radially inwardly located lower voltage winding and a radially outer high-voltage winding.
  • lens-like barrier structures are integrated, which are each formed by strips 26, 30, 34 and barrier walls 24, 28, 32 lying radially above them.
  • the barrier walls in this case are prefabricated shell elements, which are fixed on the surface of the coils 18, 20, 22 by means of a wound fiber roving.
  • Fig. 2 shows in contrast to Fig. 1 an exemplary high-voltage transformer according to the prior art, which has between adjacent coils respective barrier walls 42, 44, which are to be avoided according to the invention.
  • Fig. 3 shows a first exemplary hollow cylindrical coil with barrier structure in a representation 50.
  • a barrier structure 54 is integrated in a portion of the radially outer surface of a coil 52.
  • This has radially superimposed barrier walls 56, 58, which are each supported by axially extending strips.
  • the spaces between strips and barrier walls are formed as channel-like cavities 60, 62 and are used as cooling channels.
  • the side surfaces of the outer barrier walls 56, 58 form a step-like lateral termination of the barrier structure 54.
  • Fig. 4 shows a second exemplary hollow cylindrical coil with barrier structure in a representation 70.
  • a barrier structure 74 is integrated, the barrier wall is wound so that it flat in the surface of the coil 72nd passes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
EP13005035.4A 2013-10-22 2013-10-22 Transformateurs haute tension Active EP2866235B1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
EP13005035.4A EP2866235B1 (fr) 2013-10-22 2013-10-22 Transformateurs haute tension
PL13005035T PL2866235T3 (pl) 2013-10-22 2013-10-22 Transformator wysokiego napięcia
CA2866054A CA2866054C (fr) 2013-10-22 2014-10-03 Transformateur a haute tension
US14/515,102 US9478350B2 (en) 2013-10-22 2014-10-15 High-voltage transformer
CN201410564835.XA CN104575988B (zh) 2013-10-22 2014-10-22 高压变压器

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP13005035.4A EP2866235B1 (fr) 2013-10-22 2013-10-22 Transformateurs haute tension

Publications (2)

Publication Number Publication Date
EP2866235A1 true EP2866235A1 (fr) 2015-04-29
EP2866235B1 EP2866235B1 (fr) 2019-09-25

Family

ID=49474188

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13005035.4A Active EP2866235B1 (fr) 2013-10-22 2013-10-22 Transformateurs haute tension

Country Status (5)

Country Link
US (1) US9478350B2 (fr)
EP (1) EP2866235B1 (fr)
CN (1) CN104575988B (fr)
CA (1) CA2866054C (fr)
PL (1) PL2866235T3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT518664B1 (de) * 2016-04-22 2017-12-15 Trench Austria Gmbh HGÜ-Luftdrosselspule und Verfahren zur Herstellung

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2388566A (en) * 1942-05-16 1945-11-06 Gen Electric Electric apparatus
US3142029A (en) * 1960-08-22 1964-07-21 Gen Electric Shielding of foil wound electrical apparatus
US3302149A (en) * 1964-09-30 1967-01-31 Westinghouse Electric Corp Electrical insulating structure
US4173747A (en) * 1978-06-08 1979-11-06 Westinghouse Electric Corp. Insulation structures for electrical inductive apparatus
WO2006069590A1 (fr) * 2004-12-27 2006-07-06 Abb Technology Ag Dispositif d'induction electrique pour des applications a tension elevee
EP2472533A1 (fr) * 2011-01-04 2012-07-04 ABB Technology AG Enroulement de transformateur doté d'un canal de refroidissement
WO2012103613A1 (fr) * 2011-02-02 2012-08-09 Siemens Ltda Transformateur sec de distribution
US8520357B2 (en) * 2008-04-18 2013-08-27 Trench Austria Gmbh Electrostatic shield for an HVDC transmission component

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101809686B (zh) * 2007-09-28 2012-11-14 西门子公司 强化冷却的电绕组体和变压器
CN103093942B (zh) * 2011-11-01 2016-03-09 株式会社日立产机系统 非晶铁芯变压器

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2388566A (en) * 1942-05-16 1945-11-06 Gen Electric Electric apparatus
US3142029A (en) * 1960-08-22 1964-07-21 Gen Electric Shielding of foil wound electrical apparatus
US3302149A (en) * 1964-09-30 1967-01-31 Westinghouse Electric Corp Electrical insulating structure
US4173747A (en) * 1978-06-08 1979-11-06 Westinghouse Electric Corp. Insulation structures for electrical inductive apparatus
WO2006069590A1 (fr) * 2004-12-27 2006-07-06 Abb Technology Ag Dispositif d'induction electrique pour des applications a tension elevee
US8520357B2 (en) * 2008-04-18 2013-08-27 Trench Austria Gmbh Electrostatic shield for an HVDC transmission component
EP2472533A1 (fr) * 2011-01-04 2012-07-04 ABB Technology AG Enroulement de transformateur doté d'un canal de refroidissement
WO2012103613A1 (fr) * 2011-02-02 2012-08-09 Siemens Ltda Transformateur sec de distribution

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT518664B1 (de) * 2016-04-22 2017-12-15 Trench Austria Gmbh HGÜ-Luftdrosselspule und Verfahren zur Herstellung
AT518664A4 (de) * 2016-04-22 2017-12-15 Trench Austria Gmbh HGÜ-Luftdrosselspule und Verfahren zur Herstellung
US11562853B2 (en) 2016-04-22 2023-01-24 Siemens Energy Global GmbH & Co. KG High voltage direct current energy transmission (HVDCT) air-core inductor, and method for manufacturing the HVDCT air-core inductor

Also Published As

Publication number Publication date
US20150109089A1 (en) 2015-04-23
CA2866054C (fr) 2022-04-26
CN104575988B (zh) 2018-03-30
EP2866235B1 (fr) 2019-09-25
US9478350B2 (en) 2016-10-25
PL2866235T3 (pl) 2020-04-30
CA2866054A1 (fr) 2015-04-22
CN104575988A (zh) 2015-04-29

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