CN201060727Y - Splitting type commutator transformer - Google Patents
Splitting type commutator transformer Download PDFInfo
- Publication number
- CN201060727Y CN201060727Y CNU2007200126912U CN200720012691U CN201060727Y CN 201060727 Y CN201060727 Y CN 201060727Y CN U2007200126912 U CNU2007200126912 U CN U2007200126912U CN 200720012691 U CN200720012691 U CN 200720012691U CN 201060727 Y CN201060727 Y CN 201060727Y
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- transformer
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- low pressure
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Abstract
The utility model relates to a split type rectifier transformer, comprising an iron core, a plurality of low voltage winds and a high voltage wind wound on the iron core, which is characterized in that: the low voltage winds are divided into two groups, each group comprises a plurality of individual winds arranged axially and staggeredly while the number of windings in each group is the same, and the individual windings in the two groups are respectively connected via a plurality of leads; the high voltage winding is a whole winding, the position of which is corresponding to that of the low voltage windings. The utility model has the advantages that: the integrity of the high voltage winding is pretty good, the balances in the large impedance among the branches of the split windings as well as the balances in the impedance among the split windings can be realized more conveniently, thus the transformer can operate more safely and reliably; meanwhile, as two winds can be merged into one winding, the size of winding is reduced, and the volume of transformer is also lessened; therefore, the cost of the transformer can be reduced by about 10%, and transformer can be applied in rectification power supply systems, so as to ensure that the power systems can operate reliably and economically.
Description
Technical field
The utility model belongs to the division formula rectifier transformer that 6～10kV electric power system is used, the staggered division formula of particularly a kind of low pressure winding rectifier transformer.
Background technology
The low pressure winding is split into two parts, discrete transformer is called dual low voltage transformer electric.Two parts low pressure winding is connected on respectively on two generators, and every generator can isolated operation, also can move simultaneously, and it is out of service that generator breaks down, and another generator still can operate as normal.In the 10kV electric power system, this transformer with split winding is widely used in the commutation supply voltage system, promptly is called division formula rectifier transformer.
The capacity of each division winding of division formula rectifier transformer is half of transformer capacity, and the division winding is had following requirement: between each branch road of division winding enough big total impedance will be arranged; Impedance between division each branch road of winding and other division windings will balance each other; Each branch road of division winding with same nominal voltage also can parallel running; Insulation system between division each branch road of winding and other division windings should have enough electrical strengths; Division formula rectifier transformer will have the ability of enough mechanical forces of bearing the short circuit current generation.
Existing division formula rectifier transformer generally adopts the arrangement mode of the coiling respectively of two low pressure windings, axial split, the corresponding high pressure winding that requires also is divided into two parts, there are the following problems for this arrangement mode: the big impedance that 1, will realize dividing between each branch road of winding can only strengthen two distances between the low pressure winding, has increased the cost of transformer; 2, must preserve radial size, the axial dimension unanimity of two low pressure windings in the mill, could guarantee the balance of impedance between the division winding, do that like this manufacture difficulty of transformer has been increased; 3, break down when out of service when a generator, though another generator still can operate as normal, but because the reactance of a low pressure winding highly only is total reactance height half, when a generator breaks down when out of service, transformer is in reactance height utmost point non-equilibrium state, operating low pressure winding is in the extremely strong stray field, make the insulation electrical intensity of winding relatively poor, the mechanical force that while ampere-turn imbalance is produced is very big, winding is very easily impaired, has bigger potential safety hazard.
Summary of the invention
The purpose of this utility model is to solve the problems referred to above that prior art exists, provide a kind of by changing the axially-aligned mode of division rectifier transformer low pressure winding, the piece electrical intensity and the anti-mechanical shock ability of winding are improved, stable, safe and reliable, simple in structure, volume is little, good manufacturability, the division formula rectifier transformer that cost is low.
The utility model is achieved in that it is to be made of iron core, the low pressure winding and the high pressure winding that are wrapped on the iron core, its special character is: described low pressure winding is divided into two groups, every group of low pressure winding equated by several quantity respectively and the single winding of interlaced arrangement vertically constitutes, single winding in two groups of low pressure windings connects by lead-in wire respectively, the as a whole winding of high pressure winding, and corresponding with the low pressure winding position.
The utility model is owing to adopted the new mode of low pressure winding alternating expression arrangement, and two low pressure windings have formed an integral body, and corresponding high pressure winding is not further divided into two parts up and down yet, thereby high-low pressure winding globality is all good; The balance of impedance between big impedance between easier each branch road of realization division winding and division winding; Solved preferably because generator breaks down out of service and potential safety hazard that cause to transformer, thereby made the operation that transformer can safety and reliability.Because two windings are merged into a winding, and the winding size is dwindled, volume of transformer diminishes simultaneously, the corresponding reduction of transformer loss, the transformer cost can reduce about 10%, can be widely used in the commutation supply voltage system, thereby guarantees that system safety is stable, economical operation.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Embodiment
As shown in the figure, the staggered division formula of this low pressure winding rectifier transformer is to be made of iron core 1, the low pressure winding 2 and the high pressure winding 3 that are wrapped on the iron core 1, described low pressure winding 2 is divided into two groups, be respectively low pressure winding 201, low pressure winding 202, low pressure winding 201,202 is equated by several quantity respectively and the single winding of interlaced arrangement vertically constitutes, single winding in the low pressure winding 201,202 connects by lead-in wire respectively, high pressure winding 3 as a whole windings, and corresponding with low pressure winding 2 positions.
Claims (1)
1. one kind is divided the formula rectifier transformer, by iron core (1), be wrapped in low pressure winding (2) on the iron core (1) and high pressure winding (3) constitutes, it is characterized in that: described low pressure winding (2) is divided into two groups (201,202), two groups of low pressure windings (201,202) are equated by several quantity respectively and the single winding of interlaced arrangement vertically constitutes, single winding in two groups of low pressure windings (201,202) connects by lead-in wire respectively, the as a whole winding of high pressure winding (3), and corresponding with low pressure winding (2) position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200126912U CN201060727Y (en) | 2007-06-12 | 2007-06-12 | Splitting type commutator transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200126912U CN201060727Y (en) | 2007-06-12 | 2007-06-12 | Splitting type commutator transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201060727Y true CN201060727Y (en) | 2008-05-14 |
Family
ID=39409212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200126912U Expired - Fee Related CN201060727Y (en) | 2007-06-12 | 2007-06-12 | Splitting type commutator transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201060727Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102394167A (en) * | 2011-12-02 | 2012-03-28 | 中电电气(江苏)股份有限公司 | Low-voltage coil for epoxy air-immersed transformer of polycrystalline silicon reduction furnace |
| CN102197447B (en) * | 2008-10-28 | 2013-09-18 | Abb技术有限公司 | Transformer |
-
2007
- 2007-06-12 CN CNU2007200126912U patent/CN201060727Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102197447B (en) * | 2008-10-28 | 2013-09-18 | Abb技术有限公司 | Transformer |
| CN102394167A (en) * | 2011-12-02 | 2012-03-28 | 中电电气(江苏)股份有限公司 | Low-voltage coil for epoxy air-immersed transformer of polycrystalline silicon reduction furnace |
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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: 20080514 |