CN2618274Y - Transformer with V-shape leads - Google Patents
Transformer with V-shape leads Download PDFInfo
- Publication number
- CN2618274Y CN2618274Y CN 03227354 CN03227354U CN2618274Y CN 2618274 Y CN2618274 Y CN 2618274Y CN 03227354 CN03227354 CN 03227354 CN 03227354 U CN03227354 U CN 03227354U CN 2618274 Y CN2618274 Y CN 2618274Y
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- transformer
- phase
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Abstract
The utility model discloses a transformer with V-shaped leads, which is assembled by two magnetic path stand-alone single phase transformers which are positioned in the same fuel-oil tank. The structure of the iron cores of the two single phase transformers is heart typed or shell typed. Compound mode is the junior cascade of two single phase transformers, and the cascaded mid-point and both ends are served as three-phase input of the new-transformer. The secondary can be combined and connected into V type or X type. The transformer has advantages of small volume, low cost, easy installation and easy use. Three-phase power supply changed into biphase or fourphase power supply can be implemented, and various power supply requirements of the electrified railway and electric traction can be satisfied.
Description
Technical field
The utility model relates to a kind of transformer, is meant the V-type wiring transformer of a kind of three phase transformation two-phases or three phase transformations, four phases especially.
Background technology
The general single-phase transformer of two platform independent that adopts of existing electric railway electric power V/V traction power supply transformer makes up, connects, installs, to satisfy the demand of electric railway electric traction supply power voltage, so just a lot of troubles have been increased to the user, install and use difficulty, and floor space is big, the cost price height.
The utility model content
The purpose of this utility model is to overcome the deficiency of prior art and the V-type that a kind of volume is little, easy for installation, cost is low wiring transformer is provided.
For achieving the above object, the technical scheme taked of the utility model is: place same fuel tank to combine two magnetic circuit separate single-phase double windings or multi winding transformer.
The elementary elementary windings in series of above-mentioned transformer by two single-phase transformers, series connection mid point and two ends are the elementary three-phase power input end of the new transformer of conduct respectively, the secondary secondary winding series connection of new transformer by two single-phase transformers, serial connection neutral earthing, two ends are as the secondary output end of new transformer.
The iron core of above-mentioned transformer is core type or shell-type structure.
Can equate also can be unequal for the capacity of two single-phase transformers in the above-mentioned transformer, rated voltage can be identical also can be inequality.
Two single-phase transformers can adopt respectively and carry or No-load changer in the above-mentioned transformer, pay the limit range of regulation can be identical also can be inequality.
Pay the limit winding in the above-mentioned transformer and draw tap, three-phase voltage can be provided.
The utility model is compared with existing transformer has following advantage:
1) single-phase transformer with two platform independent carries out ingenious combination, places same fuel tank, can satisfy the various power demands of electric railway electric traction.
2) can insert filter, reduce of the influence of locomotive load harmonic wave, and realize reactive power compensation improving power factor electric power system.
3) the same with single-phase transformer, the capacity utilance can reach 100%, and operating cost is relatively low.Structure is simple relatively, and anti-short circuit capability is strong.
4) constituting the capacity of two single-phase transformers of three-phase V/V wiring can flexible configuration, unlikelyly causes the idle of transformer capacity.
5) three-phase V-type wiring transformer can accomplish that the pressure regulation amplitude is big by carrying out loaded automatic voltage-regulating mutually, can therefore remove from the existing electrified railway capacity expansion revamping because traction net undertension need increase the great amount of investment of building new electric substation.
Description of drawings
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is an another kind of structural representation of the present utility model.
Fig. 3 is an elementary diagram of the present utility model.
Fig. 4 is an elementary diagram of the present utility model.
Fig. 5 is connected to the schematic diagram of filter for low pressure winding exit of the present utility model.
Fig. 6 is connected to the schematic diagram of symmetric three-phase load for low pressure winding exit of the present utility model.
Below in conjunction with accompanying drawing structure of the present utility model is further described.
Embodiment
Referring to Fig. 1, be the V-type wiring transformer internal structure schematic diagram that two iron cores single-phase transformer that is heart type structure is formed.1 is the fuel tank of transformer among the figure, and 2 is the single-phase transformer iron core of heart type structure, and 3 is the coil of single-phase transformer.
Referring to Fig. 2, be the V-type wiring transformer internal structure schematic diagram that two iron cores single-phase transformer that is the shell-type structure is formed.4 is the fuel tank of transformer among the figure, and 5 is the single-phase transformer iron core of shell-type structure, and 6 is the coil of single-phase transformer.
Referring to Fig. 3 (a) and (b), be the Vv wiring transformer schematic diagram of three phase transformation two-phases.The elementary elementary winding L 1 of transformer, L2 series connection by two single-phase transformers, series connection mid point C and ends A, B be the elementary three-phase power input end of the new transformer of conduct respectively, secondary secondary winding L3, the L4 series connection of new transformer by two single-phase transformers, serial connection mid point c ground connection, two ends a, b are as the secondary output end of new transformer.
Referring to Fig. 4, be the secondary elementary diagram of Vx wiring transformer of three phase transformations, four phases, its elementary wiring is identical with Fig. 3 (a).The secondary output end of new transformer is connected into " X " type by two secondary four and half winding L 3, L4, L5, L6 of single-phase transformer, the middle contact ground connection of " X " type, the secondary output end of the four end a of " X " type, b, a ', the new transformer of b ' conduct.
Referring to Fig. 5, low pressure winding exit of the present utility model is connected to the filter of being made up of L, C1.
Referring to Fig. 6, low pressure winding exit of the present utility model is connected to symmetric three-phase load R.
Claims (7)
1, a kind of V-type wiring transformer is characterized in that: place same fuel tank to combine by two magnetic circuit separate single-phase transformers.
2, V-type wiring transformer according to claim 1 is characterized in that: the iron core of described single-phase transformer is core type or shell-type structure.
3, V-type wiring transformer according to claim 1 is characterized in that: the capacity of two single-phase transformers can equate also can be unequal, rated voltage can be identical also can be inequality.
4, V-type wiring transformer according to claim 1 is characterized in that: two single-phase transformers can have respectively and carry or No-load changer, its range of regulation can be identical also can be inequality.
5, V-type wiring transformer according to claim 1 is characterized in that: draw tap on the low pressure winding, can connect balanced three-phase load, also can insert filter.
6, V-type wiring transformer according to claim 1, it is characterized in that: the elementary elementary windings in series of transformer by two single-phase transformers, series connection mid point and two ends are the elementary three-phase power input end of the new transformer of conduct respectively, the secondary secondary winding series connection of new transformer by two single-phase transformers, serial connection neutral earthing, two ends are as the secondary output end of new transformer.
7, V-type wiring transformer according to claim 1, it is characterized in that: the elementary elementary windings in series of transformer by two single-phase transformers, series connection mid point and two ends are the elementary three-phase power input end of the new transformer of conduct respectively, the secondary output end of new transformer is connected into " X " type by two four and half secondary windings of single-phase transformer, the middle contact ground connection of " X " type, four ends of " X " type are as the secondary output end of new transformer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03227354 CN2618274Y (en) | 2003-04-11 | 2003-04-11 | Transformer with V-shape leads |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03227354 CN2618274Y (en) | 2003-04-11 | 2003-04-11 | Transformer with V-shape leads |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2618274Y true CN2618274Y (en) | 2004-05-26 |
Family
ID=34246830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03227354 Expired - Fee Related CN2618274Y (en) | 2003-04-11 | 2003-04-11 | Transformer with V-shape leads |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2618274Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881434A (en) * | 2012-09-27 | 2013-01-16 | 宜兴市兴益特种变压器有限公司 | Pressure-adjusting rectifying transformer special for aluminum foil formation |
| CN105448505A (en) * | 2015-12-30 | 2016-03-30 | 卧龙电气集团股份有限公司 | V/X wiring wound core traction transformer |
| CN107294115A (en) * | 2017-07-24 | 2017-10-24 | 西南交通大学 | A kind of four phase five-wire system low voltage distribution transformers |
| CN108470650A (en) * | 2018-03-05 | 2018-08-31 | 郭嘉川 | A kind of power grid intelligent voltage regulator loaded tap-off mechanical switch |
-
2003
- 2003-04-11 CN CN 03227354 patent/CN2618274Y/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881434A (en) * | 2012-09-27 | 2013-01-16 | 宜兴市兴益特种变压器有限公司 | Pressure-adjusting rectifying transformer special for aluminum foil formation |
| CN105448505A (en) * | 2015-12-30 | 2016-03-30 | 卧龙电气集团股份有限公司 | V/X wiring wound core traction transformer |
| CN105448505B (en) * | 2015-12-30 | 2018-06-26 | 卧龙电气集团股份有限公司 | V/X wiring rewinding material tractive transformers |
| CN107294115A (en) * | 2017-07-24 | 2017-10-24 | 西南交通大学 | A kind of four phase five-wire system low voltage distribution transformers |
| CN107294115B (en) * | 2017-07-24 | 2023-04-07 | 西南交通大学 | Four-phase five-wire system low-voltage distribution transformer |
| CN108470650A (en) * | 2018-03-05 | 2018-08-31 | 郭嘉川 | A kind of power grid intelligent voltage regulator loaded tap-off mechanical switch |
| CN108470650B (en) * | 2018-03-05 | 2019-08-20 | 丁世轩 | A kind of power grid intelligent voltage regulator loaded tap-off mechanical switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040526 Termination date: 20100411 |