CN101145440B - V-shaped wiring transformer - Google Patents
V-shaped wiring transformer Download PDFInfo
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- CN101145440B CN101145440B CN200610127583XA CN200610127583A CN101145440B CN 101145440 B CN101145440 B CN 101145440B CN 200610127583X A CN200610127583X A CN 200610127583XA CN 200610127583 A CN200610127583 A CN 200610127583A CN 101145440 B CN101145440 B CN 101145440B
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Abstract
The invention discloses a V-shaped connection transformer used for the traction power supply for electrified railways. The primary winding of the V-shaped connection transformer is formed by the series connection of primary windings of two single-phase transformers, and the middle point and two terminals of the series circuit are used as primary three-phase power input terminals of the transformer, wherein the bodies of the two single-phase transformers are connected in end connection mode. Compared with the prior art, the invention has the advantages of simplified internal structure of transformer, small size, easy switch-on/off structure, low material consumption, and low costs.
Description
Technical field
The present invention relates to a kind of V-type wiring transformer, be specifically related to a kind of V-type wiring transformer that can be used for the electric railway traction power supply.
Background technology
What be used for the power supply of electric railway electric traction at present is the V-type wiring transformer, the elementary elementary windings in series of this transformer by two single-phase transformers, serial connection mid point and two ends are together as the elementary three-phase power input end of transformer, and the secondary of transformer is formed by connecting as secondary output end by two single-phase transformer secondary winding.This kind transformer can adopt two table oil case separate single-phase transformer external cablings combination, also can place same fuel tank back panel wiring to combine two single-phase transformers.Because of the V-type traction transformer that inside connects, compact conformation, volume be little, make things convenient for the user on-the-spot wiring to be installed, Costco Wholesale is low, and therefore the V-type Connection Traction Transformer at present adopts this version.
Fig. 1, the 3rd places same fuel tank to be combined into the elementary winding of traction transformer of V-type wiring, the elementary diagram of secondary winding two single-phase transformers in the prior art.Shown in elementary winding part (left side of Fig. 1) among Fig. 1, A, B, 3 of C are respectively the binding post that joins with three phase mains after the elementary windings in series of two single-phase transformers, and the C point connects two mid points after the elementary windings in series.
Among Fig. 1,2 middle parts with the elementary winding of two single-phase transformers of A, B are connected, and promptly transformer body adopts the middle part inlet wire, the voltage regulating mode of two posts series connection.Adopt the transformer internal structure complexity of this inlet wire mode, need to adopt switch or two single-phase switchs of linkage from top to bottom, make that volume of switch is big, cost an arm and a leg.Simultaneously because high pressure first and last end is in sustained height, potential difference is equivalent to the head and the tail potential difference, so the transformer body phase spacing is also very big, must satisfy the requirement of first and last terminal voltage difference insulation distance, causes that volume of transformer is big, material is made a low multiple use.
Summary of the invention
Technical problem to be solved by this invention is at the existing above-mentioned defective of V-type wiring transformer in the prior art, and the V-type wiring transformer that is used for the electric railway traction power supply that a kind of volume is little, simple for structure, easy for installation, cost is low is provided.
The technical scheme that solution the technology of the present invention problem is adopted is this V-type wiring transformer, its elementary elementary windings in series by two single-phase transformers forms, the mid point of series circuit and two ends are respectively as the elementary three-phase power input end of this transformer, wherein, the device body of two single-phase transformers adopts the end mode of connection.
The first and last end of the elementary winding of the V-type wiring transformer that two single-phase transformers are formed can adopt the inlet wire mode of upper end and bottom.
Preferably, the secondary winding of the V-type wiring transformer of two single-phase transformers composition can adopt the outlet method of upper and lower end parts.
Two single-phase transformer device body ends can be respectively as two inputs of elementary three phase mains, the series connection mid point is as another input of three phase mains, the series connection mid point can select for use among A, B or the C more arbitrarily.If when adopting the ABC arrangement mode, as the A point and the C point of the elementary three-phase power input end of V-type wiring transformer, the mid point of its series connection is as the B point of three-phase power input end respectively in two single-phase transformer device body ends when bushing; If adopt the ACB arrangement mode, then with C point as the mid point of connecting, by that analogy.
Described two single-phase transformers can adopt off circuit tap changing transfor mer, can be provided with the tap section in this Transformer Winding.
Described two single-phase transformers also can adopt on-load tap-changing transformer, and independent tap winding can be set in this Transformer Winding.
Winding in the elementary winding of each of described two single-phase transformers adopts the mode that is connected in parallel, and the winding in the secondary winding can adopt the connected mode of serial or parallel connection.
When the secondary winding of two single-phase transformers adopts the connected mode of series connection, series connection neutral earthing, serial connection mid point and two single-phase transformer device body end exits are respectively as the secondary output end of this V-type wiring transformer, and this winding is arranged and the lead-in wire mode forms the V/V Connection Traction Transformer.This transformer secondary output output voltage can be 27.5kV, can directly be that two 27.5kV circuits are directly powered.
When the secondary winding of two single-phase transformers adopts the connected mode of series connection, the secondary winding of each single-phase transformer is made of two and half windings, interlaced being connected into of four and half windings " X " type of two single-phase transformers, the neutral earthing of " X " type, the neutral earthing end of the end of four and half windings and " X " type can be respectively as the secondary output end of this transformer, and this winding is arranged and the lead-in wire mode forms the V/X Connection Traction Transformer.This transformer secondary output output voltage can be 27.5kV, also can be 55kV, and supply power mode flexibly, conveniently.When the secondary side output voltage is a direct feeding system during for 27.5kV, it can directly be that four 27.5kV circuits are directly powered.When the secondary side output voltage is the self coupling supply power mode during for 55kV, can be used as power supply is the traction autotransformer power supply.
Two single-phase transformers of the present invention can adopt single-phase two column-type transformers, single-phase three pillar type transformer, single-phase two post return yoke formula transformers.
Two single-phase transformer windings can adopt single-phase two-winding transformer or single-phase multi winding transformer.
V-type wiring transformer of the present invention is owing to adopted device body end into and out of the line mode, and the inner device body of transformer is compact more, pin configuration is succinct, it is simple, easy to operate to make, switch cost low (only need choose a switch for two column-type transformers) thereby make.Since high-tension coil two post parallel connections, two post high-tension coil equipotentials, and so the transformer phase spacing only need satisfy the mechanical distance requirement, volume of transformer reduces thereupon, can save great deal of raw materials.
The present invention compared with prior art can simplify the transformer internal structure, reduced volume.Advantages such as it is simple also to have construction of switch simultaneously, and material consumption is few, and price is low.
Description of drawings
Fig. 1 is the elementary diagram of the existing elementary winding of V-type wiring transformer, secondary winding
Fig. 2 is an elementary diagram of the present invention
Fig. 3 is the elementary diagram of the existing elementary winding of V-type wiring transformer (off circuit tap changing transfor mer), secondary winding
Fig. 4 is the elementary diagram of the elementary winding of V-type wiring transformer in the embodiment of the invention 1, secondary winding V-type wiring parallel connection
Fig. 5 is the elementary diagram of the V-type wiring series connection of V-type wiring transformer secondary winding in the embodiment of the invention 2
The X type elementary diagram of V-type wiring transformer secondary winding in Fig. 6 embodiment of the invention 2
Among Fig. 1: A, B, 3 of C are the binding post that joins with three phase mains after the elementary windings in series of two single-phase transformers; T
1With X
1Be two binding posts of a single-phase transformer secondary winding; T
2With X
2Two binding posts for another single-phase transformer secondary winding; T
1, T
2Represent the termination of secondary winding; X
1, X
2Represent the end tail of secondary winding; End of the same name represented in asterisk among the figure.
Among Fig. 2; (X), (Y) expression winding end; T
1With X
1Be two binding posts of a single-phase transformer secondary winding; T
2With X
2Two binding posts for another single-phase transformer secondary winding.
Among Fig. 3: N represents switch; X, Z represent the winding end; End of the same name represented in asterisk.
Among Fig. 4: N
A, N
CThe expression shunting switch; L
1, L
2Represent elementary winding; L
3, L
4The expression secondary winding.
Among Fig. 5: T
1With X
1Be two binding posts of a single-phase transformer secondary winding; T
2With X
2Be two binding posts of another single-phase transformer secondary winding, the secondary winding of each single-phase transformer is by two windings in series.Two single-phase transformer secondary winding are V-type wiring, i.e. T among the figure
1X
1-T
2X
2, the series connection mid point that V connects is the sleeve pipe place externally.Work as T
1T
2When interconnection and ground connection, the mode of connection of this transformer is Vv0; Work as X
1X
2When interconnection and ground connection, the mode of connection of this transformer is Vv6.Adopt the transformer of this mode of connection to can be the line powering of two 27.5kV.
Among Fig. 6: T
1With X
1Be two binding posts of a single-phase transformer secondary winding; T
2With X
2Be two binding posts of another single-phase transformer secondary winding, O
1, O
2Be earth terminal.
T
1O
1, T
2O
2, X
1O
1, X
2O
2Can supply with four 27.5kV traction line powerings, T
1X
1, T
2X
2Can offer the autotransformer power supply.
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is described in further detail.
As shown in Figure 2, among the present invention, the elementary elementary windings in series of V-type wiring transformer by two single-phase transformers, A, B, 3 of C are the binding post that joins with three phase mains after the elementary windings in series of two single-phase transformers, 2 ends that connect the elementary winding of two series connection of A, C, the B point connects two mid points after the elementary windings in series, and two transformer bodies adopt the mode of upper and lower end parts wiring.
Following embodiment is indefiniteness embodiment of the present invention.
Embodiment 1:
As shown in Figure 4, in the present embodiment, two single-phase transformers adopt off circuit tap changing transfor mer, be provided with the tap section in the elementary winding of this transformer, tap section lead-in wire interconnects by mode such as welding or mechanical connection and switch leads, switch leads is from switch top or bottom or insertion switch inside, middle part, and introducing mode shown in Figure 4 is that introduce at the middle part.
The elementary winding of V-type wiring transformer is by the elementary winding L of two single-phase transformers
1, L
2Series connection, the mid point of series connection is as the B point of three-phase power input end, and as A, C 2 points of three-phase power input end, the two ends of series connection are respectively the upper end of the elementary winding of two single-phase transformers respectively at the two ends of series connection.Because the elementary winding of each single-phase transformer adopts parallel way, the voltage difference between the switch adjacent contact is little, and the electric insulation distance that needs is little, so volume of switch is little, and simple in structure, price is low.
The secondary winding L of two single-phase transformers among the present invention
3, L
4Also adopt the mode of upper end outlet.
Embodiment 2:
In the present embodiment, the elementary winding of two single-phase transformers can be identical with the structure of elementary winding among Fig. 4, the structure of this transformer secondary output winding such as Fig. 5, shown in Figure 6.Two single-phase transformers adopt single-phase two column-type transformers.
Among Fig. 5, this Secondary winding of transformer forms V-type wiring, i.e. T by the secondary winding of two single-phase transformers
1X
1-T
2X
2Wiring, the serial connection neutral earthing of V-type wiring, the two ends of V-type wiring are respectively the upper end of two single-phase transformers, constitute the secondary output end of this V-type wiring transformer.Two coil series connection of each transformer adopting in this secondary winding, because the voltage of this traction circuit is 27.5kV, each winding voltage was 27.5/2kV when the secondary winding of V-type wiring was connected like this, electric current is a total current, therefore when series connection, have only the requirement that two coil tandems in the winding could be satisfied 27.5kV, so this secondary winding has only two taps, adopt the transformer of this mode of connection can only be the line powering of two 27.5kV.
Among Fig. 6, the secondary output end of this transformer is interlaced at the middle part by the secondary winding of two single-phase transformers, secondary winding is connected into the X type by four and half windings serial connection, (electric short circuit is not carried out in X type winding inside in the neutral earthing of X type, each mid point is drawn back ground connection respectively, thereby realize electrical grounding).4 termination T of the upper end of four and half windings
1, T
2, X
1, X
2As 4 secondary output ends of this V-type wiring transformer, O
1, O
2Be the neutral earthing end.
X connects transformer because each half winding is 27.5kV, adopts the transformer of this structure to can be four 27.5kV line powerings, or is the autotransformer power supply.
Claims (9)
1. V-type wiring transformer, the elementary elementary windings in series by two single-phase transformers of this transformer forms, the mid point of series circuit and two ends are respectively as the elementary three-phase power input end of this transformer, the device body that it is characterized in that two single-phase transformers adopts the end mode of connection, promptly, the elementary winding of the transformer that two single-phase transformers are formed adopts the inlet wire mode of upper end and/or bottom, the elementary winding of each single-phase transformer adopts and is connected in parallel, elementary winding two post parallel connections, the elementary winding equipotential of two posts.
2. V-type wiring transformer according to claim 1 is characterized in that Secondary winding of transformer that two single-phase transformers are formed adopts the outlet method of upper and lower end parts.
3. V-type wiring transformer according to claim 2 is characterized in that two single-phase transformer device body ends respectively as two inputs of elementary three phase mains, and the mid point of series connection is as another input of three phase mains.
4. according to the described V-type wiring transformer of one of claim 1-3, it is characterized in that described two single-phase transformers adopt off circuit tap changing transfor mer, are provided with the tap section in the Transformer Winding.
5. according to the described V-type wiring transformer of one of claim 1-3, it is characterized in that described two single-phase transformers adopt on-load tap-changing transformer, are provided with independent tap winding in the Transformer Winding.
6. according to the described V-type wiring transformer of one of claim 1-3, it is characterized in that winding in the secondary winding of described two single-phase transformers adopts the connected mode of serial or parallel connection.
7. V-type wiring transformer according to claim 6, it is characterized in that when the secondary winding of two single-phase transformers adopts the connected mode of series connection, series connection neutral earthing, serial connection mid point and two single-phase transformer device body end exits are respectively as the secondary output end of this transformer.
8. V-type wiring transformer according to claim 6, it is characterized in that when the secondary winding of two single-phase transformers adopts the connected mode of series connection, the secondary winding of each single-phase transformer is made of two and half windings, interlaced being connected into of four and half windings " X " type of two single-phase transformers, the neutral earthing of " X " type, the neutral earthing end of the end of four and half windings and " X " type is as the secondary output end of this transformer.
9. according to the described V-type wiring transformer of one of claim 1-3, it is characterized in that two single-phase transformers adopt single-phase two column-type transformers or single-phase single-column return yoke formula transformer or single-phase three pillar type transformer, each transformer winding on one's body adopts single-phase two windings or single-phase three windings in two single-phase transformers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610127583XA CN101145440B (en) | 2006-09-14 | 2006-09-14 | V-shaped wiring transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610127583XA CN101145440B (en) | 2006-09-14 | 2006-09-14 | V-shaped wiring transformer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101145440A CN101145440A (en) | 2008-03-19 |
| CN101145440B true CN101145440B (en) | 2011-12-14 |
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ID=39207879
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200610127583XA Active CN101145440B (en) | 2006-09-14 | 2006-09-14 | V-shaped wiring transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101145440B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105469960A (en) * | 2016-01-14 | 2016-04-06 | 天威保变(合肥)变压器有限公司 | 220kV three-phase integrated traction transformer |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101871960B (en) * | 2009-04-23 | 2012-02-15 | 特变电工股份有限公司 | Test method of transformer |
| CN102226972B (en) * | 2011-03-31 | 2012-08-22 | 中国西电电气股份有限公司 | Two-column serial wiring structure of network-side coils for converter transformer |
| CN105702440B (en) * | 2015-12-30 | 2018-01-19 | 卧龙电气集团股份有限公司 | V/X and VV wiring general-purpose transformers |
| CN105845406A (en) * | 2016-06-20 | 2016-08-10 | 衢州昀睿工业设计有限公司 | Mother-son high-voltage transformer |
| CN110942897A (en) * | 2018-09-25 | 2020-03-31 | 江苏北辰互邦电力股份有限公司 | Numerical control triangular connection transformer |
-
2006
- 2006-09-14 CN CN200610127583XA patent/CN101145440B/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105469960A (en) * | 2016-01-14 | 2016-04-06 | 天威保变(合肥)变压器有限公司 | 220kV three-phase integrated traction transformer |
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| Publication number | Publication date |
|---|---|
| CN101145440A (en) | 2008-03-19 |
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