CN106601447A - Oil-immersed transformer low-voltage winding structure adopting transposed conductors - Google Patents
Oil-immersed transformer low-voltage winding structure adopting transposed conductors Download PDFInfo
- Publication number
- CN106601447A CN106601447A CN201710043144.9A CN201710043144A CN106601447A CN 106601447 A CN106601447 A CN 106601447A CN 201710043144 A CN201710043144 A CN 201710043144A CN 106601447 A CN106601447 A CN 106601447A
- Authority
- CN
- China
- Prior art keywords
- transposed conductor
- oil
- transposed
- winding structure
- transformer low
- 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.)
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Classifications
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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
- H01F27/28—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
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
- H01F27/325—Coil bobbins
-
- 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
- H01F2027/2838—Wires using transposed wires
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
The invention relates to the technical field of a transformer, and particularly relates to an oil-immersed transformer low-voltage winding structure adopting transposed conductors. The oil-immersed transformer low-voltage winding structure comprises an insulting cylinder; three layers of transposed conductors are wound on the periphery of the insulating cylinder turn by turn and layer by layer, and respectively are an inner layer transposed conductor, a middle layer transposed conductor and an outer layer transposed conductor; interlayer oil passages are formed between three layers of transposed conductors; an interlayer oil passage is also formed between the inner layer transposed conductor and the outer wall of the insulating cylinder; the interlayer oil passages are axially distributed along the insulating cylinder; and end rings are mounted at both ends of each layer of transposed conductor. The oil-immersed transformer low-voltage winding structure disclosed by the invention has the advantages that eddy current loss and circulation current loss in the conductors are greatly reduced; material cost is reduced; heat dissipation efficiency is high; mechanical intensity is high; a winding process is simple; and the like.
Description
Technical field
The invention belongs to transformer technology field, more particularly to a kind of oil-filled transformer low pressure of employing transposed conductor around
Group structure.
Background technology
For a long time, 110kV levels oil-immersed transformer low-voltage winding is that paper bag flat type copper wire enters using plain conductor
Row coiling.If the low pressure winding phase current of SZ11-50000/110 oil-immersed power transformers is up to 1587A, what electric current passed through
Sectional area of wire is very big, in order to meet the demand, needs wire radical in parallel to reach 28.The low pressure winding is using single spiral shell
Rotating, plain conductor carries out coiling, altogether using three packet transpositions in coiling.If parallel conducting wire non-complete transposition, wire exist
Eddy-current loss longitudinally, laterally in stray field is big, and the wire that multiple conducting wires cause due to being in different stray field positions
Between out-of-balance current circulation loss it is very big, the 10%～20% of low pressure winding load loss can be accounted for sometimes；Additionally, this single spiral shell
The structure of rotating winding is more complicated, and technique for coiling difficulty is larger.
The content of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of oil-filled transformer low pressure of employing transposed conductor
Winding construction, the eddy-current loss and circulation loss in this transformer low voltage winding conducting wire decline to a great extent, and save material into
This, radiating efficiency is high, and mechanical strength is strong, and technique for coiling is simple.
To achieve these goals, the technical solution used in the present invention is：A kind of oil immersed type transformation of employing transposed conductor
Device low pressure winding structure, it is characterised in that：Including insulating concrete cylinder, insulating concrete cylinder periphery is successively arranged with three layers of transposition by circle and leads
Line, respectively internal layer transposed conductor, middle level transposed conductor and outer layer transposed conductor, are provided with interlayer oil between three layers of transposed conductor
Road, also is provided with interlayer oil duct between the internal layer transposed conductor and insulating concrete cylinder outer wall, interlayer oil duct is along insulating concrete cylinder axial direction
Arrangement, the two ends of every layer of transposed conductor are mounted on end circle.
Further, the transposed conductor includes at least 7 enamel-cover strip conductors, 7 enamel-cover strip conductor width face phase mutual connections
Touch combination and constitute two array structures, two row enamel-cover strip conductors equidirectional sequentially replace along doing clockwise or counterclockwise.
Further, the enamel-cover strip conductor includes strip conductor and enamel-cover layer, scribbles gluing between strip conductor and enamel-cover layer
Agent.
Further, the continuous closely wrapped electric insulation paper tape in multilamellar is additionally provided with outside the transposed conductor.
Further, the transposed conductor includes 7-83 root enamel-cover strip conductors.
Further, the transposed conductor includes 7-59 root enamel-cover strip conductors.
Further, the transposed conductor includes 31 enamel-cover strip conductors.
Further, the interlayer oil duct includes a gummed paper, is uniformly bonded with stay on point gummed paper.
Further, the insulating concrete cylinder periphery is in form three-layered node by circle successively coiling side by side using two transposed conductors
Structure, is surrounded by insulating barrier outside the head that two transposed conductors stretch out outside insulating concrete cylinder and forms single head construction.
Further, the insulating concrete cylinder includes cardboard cylinder, cardboard cylinder periphery winding glass fibre.
Using such scheme, the present invention is made up of cardboard cylinder, end circle, transposed conductor, oil duct, has 7 inside transposed conductor
More than enamel-cover strip conductor width face contact with each other and be combined into two row, two row enamel-cover strip conductors along it is suitable/do equidirectional counterclockwise
Sequentially replace, strip conductor enamel-cover layer scribbles adhesive, make multilamellar with electrician's insulating paper strip outside transposed conductor continuous closely wrapped,
The internal vortex loss of each wire is substantially reduced, and ensures that little conductor length is the same per root, positioned identical stray field position
Put, transposition inner lead circulation loss is decreased obviously（About the 2% of low pressure winding load loss）；It is flat in above-mentioned transposed conductor
Wire can be very thin, and can be many around radical, as single enamel-cover strip conductor is through the diminution of magnetic field area of section, brings whirlpool
The reduction of stream loss；The strip conductor of composition transposed conductor just replaces once every 0.5～1 meter, each strip conductor institute in stray field
The position distribution at place than more uniform, so circulation loss is very low.This transposed conductor it is parallel with many from the common of tape insulation
Wire is compared, and with less insulation thickness, thus has more preferable thermal diffusivity, in design, the diameter value of low pressure winding itself
Can reduce, and cause high pressure winding, the reduction of tap-changing windings diameter, so as to reduce copper material consumption.It is due to when being dried, flat to lead
Line and can constantly be replaced between strip conductor by included adhesive bond together, make it is all and around strip conductor shape
Into an entirety, the performance of the mechanical strength and resistance to shorting power of winding is improve.Further, since autohension wire itself is adopted
The transposition of automatization, reduces the workload of artificial transposition, shortens the coiling time.
Above-mentioned low pressure winding is cylinder mode, and transposed conductor is wound on by circle, successively on cardboard cylinder, in the placement of each interlayer
There is the stay with point gummed paper as interlayer oil duct, oil duct is vertically arranged.Winding construction adopt drum type brake primarily to
Winding transposition wire is convenient, is also due to present invention employs winding transposition wire so that winding mechanical strength is improved, and just causes
Cylinder mode can be implemented in the transformer low voltage winding of 110kV.Oil duct to insulate and radiate, compare by vertical oil duct
General horizontal oil duct, installs convenient.
The Transposition Principle of transposed conductor of the present invention is as follows：The strip conductor contacted for two col width faces inside transposed conductor, left column
Top strip conductor shifts to top placed in the middle, and right column wire moves down one successively, and the strip conductor of right row bottom shifts to left column bottom, left column
It is upper successively to move one, so complete to replace successively, afterwards according to same clockwise direction, often complete once through 0.5-1 rice
Transposition.If using transposition form counterclockwise, also according to same principle.
The invention will be further described below in conjunction with the accompanying drawings.
Description of the drawings
Sectional side view of the accompanying drawing 1 for the embodiment of the present invention；
Accompanying drawing 2 is lifted one's head for the embodiment of the present invention sectional view of part wire；
Accompanying drawing 3 is embodiment of the present invention cross sectional plan view；
Transposition Principle schematic diagram of the accompanying drawing 4 for transposed conductor of the present invention；
Insulating concrete cylinder 1, end circle 2, transposed conductor 3, go out cephalic par 31, interlayer oil duct 4, enamel-cover strip conductor 5, electric insulation paper 6, absolutely
Edge outsourcing 7.
Specific embodiment
The present invention specific embodiment be as shown in Figure 1,3 using transposed conductor 3 110kV oil-filled transformers low pressure around
Group structure, the low pressure winding is drum type brake, and which includes insulating concrete cylinder 1, and insulating concrete cylinder 1 includes cardboard cylinder, and glass is full of outside cardboard cylinder
Glass fiber is constituted, and transposed conductor 3 is wound on by circle, successively on cardboard cylinder, three layers of 3 coiling of transposed conductor in the present embodiment, this
2 transposed conductors 3 are carried out into coiling, and the position lifted one's head at 3 two ends of transposed conductor side by side in embodiment, two side by side change
One layer of insulation outsourcing 7 is wrapped up again form a wire and go out 31 structure of cephalic par in 31 periphery of cephalic par that goes out of position wire 3.It is above-mentioned every
3 two ends of layer transposed conductor are respectively placed with end circle 2, are placed with the stay with point gummed paper as interlayer between each layer transposed conductor 3
Oil duct 4, in addition, also being provided with interlayer oil duct 4 between 1 outer wall of internal layer transposed conductor 3 and insulating concrete cylinder, interlayer oil duct 4 is to insulate
And radiating, interlayer oil duct 4 vertically arranges, and vertical interlayer oil duct 4 compares general horizontal oil duct, installs more
It is convenient.The winding construction of drum type brake is primarily to 3 coiling of transposed conductor conveniently, is also due to present invention employs transposed conductor
3 coilings so that winding mechanical strength is improved, cylinder mode can be implemented in the transformer low voltage winding of 110kV.
Enamel-cover strip conductor 5 in every transposed conductor 3 generally 7 to 59, can at most reach 83.As shown in Fig. 2
There is the enamel-cover strip conductor 5 of 31 in the present embodiment inside transposed conductor 3, the enamel-cover strip conductor 5 is contacted with each other combination by wide face
Become two array structures, two row enamel-cover strip conductors 5 along it is suitable/do counterclockwise and equidirectional sequentially replace.Transposition Principle as shown in figure 4,
At the top of left column, numbering is that 1 strip conductor shifts to top placed in the middle, and right column wire moves down one successively, right row bottom numbering be 16 it is flat
Wire shifts to left column bottom, and left column is upper successively to move one, so completes to replace successively, afterwards according to same clockwise direction,
Often complete once to replace through 0.5-1 rice.
Above-mentioned enamel-cover strip conductor 5 includes strip conductor and enamel-cover layer, scribbles adhesive between strip conductor and enamel-cover layer.Transposition is led
Make multilamellar with 6 band of electrician's insulating paper outside line 3 continuous closely wrapped.
The present invention is not limited to above-mentioned specific embodiment, and persons skilled in the art are according to disclosed by the invention interior
Hold, other various specific embodiments can be adopted to implement the present invention, or every design structure and think of using the present invention
Road, does simple change or change, both falls within protection scope of the present invention.
Claims (10)
1. the oil-filled transformer low pressure winding structure of a kind of employing transposed conductor, it is characterised in that：Including insulating concrete cylinder, insulation
Cylinder periphery is successively arranged with three layers of transposed conductor, respectively internal layer transposed conductor, middle level transposed conductor and outer layer transposition by circle
Wire, is provided with interlayer oil duct, also is provided with layer between the internal layer transposed conductor and insulating concrete cylinder outer wall between three layers of transposed conductor
Between oil duct, along insulating concrete cylinder axial arranging, the two ends of every layer of transposed conductor are mounted on end circle to interlayer oil duct.
2. the oil-filled transformer low pressure winding structure of employing transposed conductor according to claim 1, it is characterised in that：Institute
Stating transposed conductor includes at least 7 enamel-cover strip conductors, and 7 enamel-cover strip conductor width faces contact with each other to combine and constitute two array structures,
Two row enamel-cover strip conductors equidirectional sequentially replace along doing clockwise or counterclockwise.
3. the oil-filled transformer low pressure winding structure of employing transposed conductor according to claim 2, it is characterised in that：Institute
Stating enamel-cover strip conductor includes strip conductor and enamel-cover layer, scribbles adhesive between strip conductor and enamel-cover layer.
4. the oil-filled transformer low pressure winding structure of employing transposed conductor according to claim 3, it is characterised in that：Institute
State and outside transposed conductor, be additionally provided with the continuous closely wrapped electric insulation paper tape in multilamellar.
5. the oil-filled transformer low pressure winding structure of employing transposed conductor according to claim 4, it is characterised in that：Institute
Stating transposed conductor includes 7-83 root enamel-cover strip conductors.
6. the oil-filled transformer low pressure winding structure of employing transposed conductor according to claim 5, it is characterised in that：Institute
Stating transposed conductor includes 7-59 root enamel-cover strip conductors.
7. the oil-filled transformer low pressure winding structure of employing transposed conductor according to claim 6, it is characterised in that：Institute
Stating transposed conductor includes 31 enamel-cover strip conductors.
8. the oil-filled transformer low pressure winding structure of employing transposed conductor according to claim 1, it is characterised in that：Institute
Stating interlayer oil duct includes a gummed paper, is uniformly bonded with stay on point gummed paper.
9. the oil-filled transformer low pressure winding structure of the employing transposed conductor according to claim 1-8 any one, its
It is characterised by：The insulating concrete cylinder periphery using two transposed conductors in forming three-decker by circle successively coiling side by side, two
Insulating barrier is surrounded by outside the head that transposed conductor stretches out outside insulating concrete cylinder and forms single head construction.
10. the oil-filled transformer low pressure winding structure of employing transposed conductor according to claim 9, it is characterised in that：
The insulating concrete cylinder includes cardboard cylinder, cardboard cylinder periphery winding glass fibre.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710043144.9A CN106601447A (en) | 2017-01-19 | 2017-01-19 | Oil-immersed transformer low-voltage winding structure adopting transposed conductors |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710043144.9A CN106601447A (en) | 2017-01-19 | 2017-01-19 | Oil-immersed transformer low-voltage winding structure adopting transposed conductors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106601447A true CN106601447A (en) | 2017-04-26 |
Family
ID=58586376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710043144.9A Pending CN106601447A (en) | 2017-01-19 | 2017-01-19 | Oil-immersed transformer low-voltage winding structure adopting transposed conductors |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106601447A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107026006A (en) * | 2017-05-12 | 2017-08-08 | 山东驰翔电气有限公司 | A kind of oil-immersed transformer high-voltage coils and its winding method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101226819A (en) * | 2007-11-26 | 2008-07-23 | 青岛青波变压器股份有限公司 | Method for coiling iron-core transformer winding using cuprum aluminum composite conductor and winding thereof |
| KR20090034786A (en) * | 2007-10-04 | 2009-04-08 | 에섹 유로쁘 | Electrical transposed conductor |
| CN201229836Y (en) * | 2008-07-15 | 2009-04-29 | 沈阳沈变中型变压器有限责任公司 | Low voltage winding construction for high voltage large capacity electric power transformer |
| CN201256058Y (en) * | 2008-09-23 | 2009-06-10 | 浙江电力变压器有限公司 | Transformer coil |
| CN205122221U (en) * | 2015-08-07 | 2016-03-30 | 阿斯塔导线有限公司 | Low epoxy axial oil duct net package transposed conductor |
-
2017
- 2017-01-19 CN CN201710043144.9A patent/CN106601447A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20090034786A (en) * | 2007-10-04 | 2009-04-08 | 에섹 유로쁘 | Electrical transposed conductor |
| CN101226819A (en) * | 2007-11-26 | 2008-07-23 | 青岛青波变压器股份有限公司 | Method for coiling iron-core transformer winding using cuprum aluminum composite conductor and winding thereof |
| CN201229836Y (en) * | 2008-07-15 | 2009-04-29 | 沈阳沈变中型变压器有限责任公司 | Low voltage winding construction for high voltage large capacity electric power transformer |
| CN201256058Y (en) * | 2008-09-23 | 2009-06-10 | 浙江电力变压器有限公司 | Transformer coil |
| CN205122221U (en) * | 2015-08-07 | 2016-03-30 | 阿斯塔导线有限公司 | Low epoxy axial oil duct net package transposed conductor |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107026006A (en) * | 2017-05-12 | 2017-08-08 | 山东驰翔电气有限公司 | A kind of oil-immersed transformer high-voltage coils and its winding method |
| CN107026006B (en) * | 2017-05-12 | 2019-06-14 | 山东驰翔电气有限公司 | A kind of oil-immersed transformer high-voltage coils and its winding method |
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Application publication date: 20170426 |