EP1255258A1 - Dispositif d'enroulement électrique - Google Patents

Dispositif d'enroulement électrique Download PDF

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Publication number
EP1255258A1
EP1255258A1 EP02090119A EP02090119A EP1255258A1 EP 1255258 A1 EP1255258 A1 EP 1255258A1 EP 02090119 A EP02090119 A EP 02090119A EP 02090119 A EP02090119 A EP 02090119A EP 1255258 A1 EP1255258 A1 EP 1255258A1
Authority
EP
European Patent Office
Prior art keywords
winding
partial
windings
turns
arrangement
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.)
Ceased
Application number
EP02090119A
Other languages
German (de)
English (en)
Inventor
Bernd Hofmann
Fritz Sorg
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
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 Siemens AG filed Critical Siemens AG
Publication of EP1255258A1 publication Critical patent/EP1255258A1/fr
Ceased 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
    • H01F27/32—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
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/08—Cooling; Ventilating
    • H01F27/085—Cooling by ambient air

Definitions

  • the invention relates to an electrical winding arrangement with a partial winding, which is at least one further partial winding coaxially surrounding leaving a space and is electrically connected to it.
  • the known winding arrangement has three partial windings on, which are all arranged coaxially one inside the other, so that one of the partial windings, namely the outermost one, at least another part winding, namely the innermost, surrounds.
  • the Partial windings surround a centrally located core leg of a transformer core. They are electrical with each other connected to a winding that is an undervoltage winding of the transformer.
  • the undervoltage winding is coaxially surrounded by a high-voltage winding, with an annular channel between this and the one partial winding is left for the operation of the transformer required dielectric strength between the sub and the high-voltage winding is reached.
  • the turns of the Undervoltage winding are largely even on the Split windings; however, the total number of turns is not an integer due to the number of partial windings divisible, making one of the partial windings one more turn exhibits than the two remaining partial windings.
  • all partial windings - except for the number of turns - are identical built up. Each partial winding is wound evenly, and all the partial windings have the same axial length. The same material is also used for all partial windings Winding insulation provided.
  • the partial windings are included each designed so that in operation with the nominal power no limit value for the temperature of the partial windings is exceeded, in particular the winding insulation is not thermally overloaded.
  • Cooling fluid in particular cooling air
  • Cooling air flows through the ring channel. Because of the Dielectric strength between the upper and lower voltage winding the annular channel has a greater radial width on than each of the spaces between the sub-windings.
  • the object of the invention is to provide a winding arrangement Specify the type mentioned above for a comparative high rated power is formed.
  • the task is at the beginning of a winding arrangement mentioned type according to the invention solved in that the number of turns dimensioned per unit length in the partial windings in this way is that the operation is essentially the same thermal stress occurs on each part winding.
  • the invention takes advantage of one and the other Partial winding in the company due to its structural arrangement cooled to different degrees. Because the further partial winding is surrounded by the one partial winding, heat can be dissipated poorly because it only cooled with cooling air already heated by the partial winding can be. As the further partial winding the core leg surrounds can also from the inside out of the further partial winding Heat cannot be dissipated via cooling air.
  • the one The partial winding is surrounded by the high-voltage winding, however, the ring channel in between points in comparison to the space between one and the other Partial winding on a larger radial width, so that a partial winding cooled much better from the outside than the further partial winding.
  • One part winding is therefore cooled with a higher cooling capacity than the other Partial winding, which means a higher thermal load experiences.
  • the number of turns per unit length is for each partial winding is therefore chosen so that the different Cooling of the partial windings taken into account becomes.
  • it is compared to the state of the Technology in the partial winding more turns, the better is cooled.
  • the available cooling capacity is thus better utilized and the winding arrangement is included operable with a higher electrical power rating.
  • the technology selected the electrical nominal power so that the further partial winding is not thermally overloaded; i.e., that the winding temperature of the further partial winding Limit does not exceed.
  • the Winding temperature of a partial winding far below that Limit temperature because it is cooled better.
  • the formation of the winding arrangement according to the invention is also particularly well applicable to a throttle that only one has only winding with at least the two partial windings.
  • the one part winding is the outer one of the partial windings is free towards the outside, so that from there it is always supplied with fresh and therefore cooler cooling air becomes.
  • the difference between cooling one and the cooling of the further partial winding is thereby particularly pronounced.
  • To a different number of turns per unit length for To achieve the one and the further partial winding can further partial winding with the same number of turns axially longer be than a partial winding.
  • the further partial winding protrudes in this case, out of the one side of the partial winding.
  • the partial windings preferably have an equal axial length and the number of turns one part winding is larger than the number of turns of the other Part winding. The same axial length results in a compact structure of the winding arrangement and it results less stray flow of the trainee in the company Magnetic field than in a configuration of the partial windings with different axial lengths.
  • the partial windings can be made in any way with one liquid or gaseous coolants are cooled; for example, they can be cooled with oil are arranged within an oil-filled boiler.
  • the Coolant can be pumped or equivalent Facility to be put in a flow along of the partial windings runs so that the partial windings are special be chilled well.
  • the flow of the coolant can but also on its own without external influence the arrangement of the partial windings and the operation of adjust the heat given off by the partial windings.
  • the flow can be done with a fan / blower get supported.
  • the cooling with air offers in comparison to other coolants, such as oil low maintenance and less effort Safety measures.
  • Partial windings between one partial winding and one arranged further partial winding each with each other have the same number of turns per unit length.
  • This arrangement with five partial windings is particularly advantageous, if the winding arrangement as a choke winding of an electrical Throttle is provided. Learn about this arrangement the additional partial windings in operation largely equally strong thermal load, so they are regarding the number of turns per unit length is almost the same could be.
  • the insulation of the turns can be formed with any suitable material.
  • a liquid, in particular transformer oil, or gas, in particular SF 6 can be used as the insulation material, the winding arrangement being arranged in a boiler.
  • each partial winding is preferably dry-insulated.
  • the material used for dry insulation is, for example, paper or plastic; the windings can also be insulated with casting resin or with an adhesive resin, for example in the form of adhesive resin tapes or foils. Compared to insulation with oil or gas, dry insulation offers the advantage of lower maintenance requirements and lower safety requirements.
  • the invention is based on an embodiment shown in the figure explained in more detail.
  • the winding arrangement 1 has five partial windings 2-6, which are coaxial with one another are arranged standing and along a common Axis 7 extends.
  • the partial winding 2 the outermost part winding and the part winding 6 the innermost Partial winding of the winding arrangement 1.
  • a core leg is centrally surrounded by all partial windings 2-6 22 arranged, which extends along the axis 7. If the throttle is designed as "ironless Throttle "is present at core leg 22.
  • Each of the partial windings 2-6 has a number of turns 12, 13, 14, 15 and 16, respectively.
  • the turns 12-16 are electrically insulated from one another with a respective insulation 17, 18, 19, 20 and 21.
  • the partial windings 2-6 are electrically connected to one another so that together they form a winding with winding connections 23 and 24.
  • the gaps are used to cool the winding arrangement during operation 8-11 of cooling air can flow through. additionally can between the innermost part winding 6 and the core leg 22 a space through which cooling air 26 can also flow be provided; but here lies the innermost Partial winding 6 directly on the core leg 22. Farther is between the housing 25 and the outermost part winding 2nd also an intermediate space 27 for the flow of cooling air 26 be left; the housing 25 can also directly rest on the outer part winding 2.
  • the partial windings 2-6 can be self-supporting, for example. Appropriate Devices for supporting the partial windings 2-6, be it against a frame or against each other not shown for the sake of clarity.
  • the partial windings 2-6 can also be continuous with a common Winding conductor to be wound, the gaps 8-11 can be formed by free deposits.
  • the partial winding 2 is in the Operation better cooled than all other partial windings 3-6. This results from the fact that the partial winding 2 is not of is surrounded by another partial winding. From the outer part winding 2 can heat particularly well to the outside, so in Direction to the housing 25 are given. This is particularly so then the case when the housing 25 is made of a good thermally conductive material is formed.
  • the innermost part winding 6 is surrounded by the partial winding 5, surrounds however, no further partial winding itself and can therefore good heat inwards, i.e. towards the core leg 22, submit. Therefore, the innermost part winding 6 is the second best cooled.
  • the core leg 22 is usually made of transformer sheet metal or other magnetizable materials, which are usually good heat conductors at the same time.
  • the partial windings 3-5 are each of a partial winding surround and surround yourself as well Part winding.
  • the partial winding 3 of the Partial winding 2 surrounds itself and surrounds the partial winding 4. Due to their structural arrangement, this means that the partial windings are 3-5 each between those that also generate heat during operation Partial windings arranged so that these part windings 3-5 the heat is dissipated worst can.
  • the outer part winding 2 and the inner part winding 6 are So with their structural arrangement alone with a higher cooling capacity than the partial windings 3-5.
  • the number of turns per unit length must be taken into account Dimension ⁇ L for each of the partial windings 2-6 in such a way that in operation with all partial windings 2-6 essentially one same thermal load occurs. Thereby is in operation each of the partial windings 2-6 to an almost same winding temperature warmed.
  • the appropriate number of turns can be 2-6 per unit length for each of the partial windings determined experimentally or determined by means of calculations become.
  • the partial winding 2 has one Number of turns of 3 per unit length
  • the partial windings 3-5 each have a number of turns of 2 per unit length ⁇ L
  • the partial winding 6 has a number of turns 2.5 per unit of length ⁇ L.
  • the outermost partial winding 2 on is cooled best, the innermost part winding 6 second best is cooled and the partial windings 3-5 alike worst cooled.
  • the partial windings 2 and 6 are with a higher number of turns per unit length ⁇ L equipped.
  • the partial windings 2-6 all have the same axial length, there are different numbers of turns for the Partial windings 2-6.
  • Part winding 2 has a total of 14 turns 12
  • the partial winding 6 has 12 turns 16
  • the partial windings 3-5 each have 10 turns 13, 14 or 15 on. This results in a total number of turns of 56.
  • the partial winding 2 With a total number of turns of 228 the partial winding 2 a total of 57 turns 12, the partial winding 6 a total of 51 Turns 16 and the partial windings 3-5 40 turns each 13, 14 and 15, respectively.
  • Such a winding arrangement is not shown for the sake of clarity.
  • the partial windings 2-6 could also be an equal number of Have turns 12, 13, 14, 15 and 16, however, the Partial winding 6 then have a greater axial length than the partial winding 2.
  • the partial windings would also be the same in this case 3-6 a greater length than the partial winding 2 and have as the partial winding 6.
  • the partial windings 3-5 would protrude from the end of the partial winding 2.
  • the winding arrangement 1 - as already above mentioned - a choke winding of an electric choke form, it can also as a transformer winding, in particular of an electrical transformer, the undervoltage winding be executed.
  • the winding arrangement 1 for example, only two partial windings that both together leaving a ring channel of the High voltage winding are surrounded or coaxial between them the high-voltage winding is arranged.
  • the partial windings 2-6 can, as shown, as wire windings be trained.
  • the partial windings 2-6 can however also designed as tape windings, with the windings are formed with a band of a metal. specially come with a tape winding aluminum tapes for the Formation of a partial winding 2-6 into consideration.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Coils Of Transformers For General Uses (AREA)
EP02090119A 2001-04-19 2002-03-22 Dispositif d'enroulement électrique Ceased EP1255258A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10120236 2001-04-19
DE2001120236 DE10120236C1 (de) 2001-04-19 2001-04-19 Elektrische Wicklungsanordnung

Publications (1)

Publication Number Publication Date
EP1255258A1 true EP1255258A1 (fr) 2002-11-06

Family

ID=7682660

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02090119A Ceased EP1255258A1 (fr) 2001-04-19 2002-03-22 Dispositif d'enroulement électrique

Country Status (2)

Country Link
EP (1) EP1255258A1 (fr)
DE (1) DE10120236C1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2330603A1 (fr) * 2009-12-04 2011-06-08 ABB Technology AG Transformateur doté d'un enroulement de bande
EP2439756A3 (fr) * 2010-10-08 2015-02-25 Rockwell Automation Technologies, Inc. Transformateur multi-phase

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1299188A (en) * 1968-12-23 1972-12-06 Licentia Gmbh Improvements in or relating to high voltage d.c. system
DE2207205A1 (de) * 1972-02-16 1973-08-23 Transformatoren Union Ag Luftgekuehlter transformator mit einem oder mehreren axialen kuehlkanaelen

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3518772A1 (de) * 1985-05-24 1986-11-27 Robert Bosch Gmbh, 7000 Stuttgart Sensoranordnung
JPS6356904A (ja) * 1986-08-25 1988-03-11 ザ　ス−ペリオア　エレクトリツク　カンパニ− 誘導装置
SE510451C2 (sv) * 1997-02-03 1999-05-25 Asea Brown Boveri Krafttransformator eller reaktor
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
DE19912280C1 (de) * 1999-03-18 2000-09-14 Siemens Ag Transformator und Verfahren zur Kühlung eines Transformators

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1299188A (en) * 1968-12-23 1972-12-06 Licentia Gmbh Improvements in or relating to high voltage d.c. system
DE2207205A1 (de) * 1972-02-16 1973-08-23 Transformatoren Union Ag Luftgekuehlter transformator mit einem oder mehreren axialen kuehlkanaelen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2330603A1 (fr) * 2009-12-04 2011-06-08 ABB Technology AG Transformateur doté d'un enroulement de bande
EP2439756A3 (fr) * 2010-10-08 2015-02-25 Rockwell Automation Technologies, Inc. Transformateur multi-phase

Also Published As

Publication number Publication date
DE10120236C1 (de) 2003-01-30

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