CN201562573U - Self-coupling low-voltage dual-voltage on-load voltage-regulating transformer - Google Patents
Self-coupling low-voltage dual-voltage on-load voltage-regulating transformer Download PDFInfo
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- CN201562573U CN201562573U CN2009203140836U CN200920314083U CN201562573U CN 201562573 U CN201562573 U CN 201562573U CN 2009203140836 U CN2009203140836 U CN 2009203140836U CN 200920314083 U CN200920314083 U CN 200920314083U CN 201562573 U CN201562573 U CN 201562573U
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Abstract
The utility model relates to a self-coupling low-voltage dual-voltage on-load voltage-regulating transformer, belonging to the field of manufacturing technology of a transformer. The self-coupling low-voltage dual-voltage on-load voltage-regulating transformer has the technical scheme of comprising a constant magnetic flux device body (1) and a variable magnetic flux device body (2), wherein the constant magnetic flux device body has the arrangement sequence of windings from inside to outside from an iron core column: a balancing winding (3), a common winding (4), a voltage-regulating winding (5), a switching winding (6) and a series connection winding (7); the variable magnetic flux device body has the arrangement sequence of windings from inside to outside from the iron core column: a compensation winding (8) and an exciting winding (9); the electrical connection between the constant magnetic flux device body and the variable magnetic flux device body is that the series connection winding (7) is connected with the common winding (4), so that a self-coupling structure can be formed; and the switching winding (6) can be determined to be connected with the series connection winding or the common winding in series by a selector switch (12), so that power grids with different voltage grades can be switched at low voltage. By adopting the brand new structural design of double device bodies, the transformer effectively solves the problem of overhigh voltage deviation caused by the power grids which have different voltage grades and share the same set of voltage-regulating winding when being connected at low voltage.
Description
Affiliated technical field:
The utility model relates to a kind of self coupling, low-voltage dual-voltage on-load-tap-changing transformer, belongs to technical field of transformer manufacturing.
Background technology:
The autotransformer high pressure is a non-excitation pressure adjustment, low pressure can be switched on the electrical network of two kinds of electric pressures, and low pressure can also be carried out on-load voltage regulation respectively under different voltage, and at present the problem that exists is: low pressure under different voltage during a shared cover pressure regulation winding voltage deviation excessive.
The utility model content:
The utility model purpose provides a kind of self coupling, low-voltage dual-voltage on-load-tap-changing transformer, adopts two machine body structure designs, solves the problems referred to above that exist in the background technology.
The technical solution of the utility model is:
A kind of self coupling, low-voltage dual-voltage on-load-tap-changing transformer comprise its permanent magnetic flux device body and become magnetic flux device body, permanent magnetic flux device is as main device body, become the magnetic flux device as auxilliary device body, permanent magnetic flux device body puts in order to balance winding, common winding, pressure regulation winding, switches winding, series connection winding from core limb winding from inside to outside; It is compensation winding, field winding that change magnetic flux device body puts in order from core limb winding from inside to outside; Between these two device bodies be electrically connected for: the series connection winding connect with common winding and be the self coupling structure, selects the switching winding to seal in by diverter switch and connects winding or seal in common winding, switch between the electrical network of different electric pressures with realization low pressure.
Said permanent magnetic flux device body and change magnetic flux device body are arranged in the oil tank of transformer, are two three-phase three-limb transformer bodies.
It is much bigger that permanent magnetic flux device body becomes magnetic flux machine body structure size, so can will become the end that magnetic flux device body quadrature places permanent magnetic flux device body.
The transformer end is provided with three single-phase low-voltage loaded switches in addition, is used for the on-load voltage regulation of low pressure; The high-pressure side of transformer is provided with three single-phase high pressure no load switch, is used for the No-load changer of high pressure; The low-pressure side of transformer also is provided with the diverter switch of three single-phase No-load changers, is used for low voltage voltage and switches between two kinds of electric pressures.
For realizing that low pressure can connect the electrical network of two kinds of electric pressures, between series connection winding and common winding, be provided with one and switch winding, controlling it with diverter switch seals in the series connection winding or seals in common winding, promptly the number of turn by this control common winding can change significantly, changes significantly under the electrical network of two kinds of electric pressures to realize low pressure.
When low voltage voltage is low voltage, will compensate windings in series in pressure regulation winding end with no load switch control, field winding is connected in parallel on pressure regulation winding and the compensation winding.Like this, field winding is just given the compensation winding excitation be connected on pressure regulation winding end, make low pressure under low voltage during on-load voltage regulation voltage deviation as much as possible little.When low voltage voltage is high voltage, will compensate winding and field winding excises from circuit with no load switch control, make the pressure regulation winding directly string at the common winding end, with the on-load voltage regulation of realization low pressure.In addition, also be provided with the balance winding that a ground connects on one's body, so that circulation triple-frequency harmonics and zero sequence magnetic flux at permanent magnetic flux device.
The beneficial effects of the utility model: adopted brand-new two device bodies, become the flux compensation pressure adjusting structure, can make the low pressure winding under two kinds of electric pressures can a shared cover pressure regulation winding and a loaded switch, and guaranteed that each tapping voltage error is as best one can little.The transformer of the utility model structure can be used between the electrical network of three kinds of different electric pressures, but the high-voltage fence of only being responsible for wherein comes and goes to the trend between two kinds of low voltage electric networks respectively.The utility model has adopted a kind of brand-new two machine body structures designs, and shared one overlaps the excessive problem of voltage deviation that the pressure regulation winding causes when having solved the electrical network of the different electric pressures of low crimping effectively.
Description of drawings:
Accompanying drawing 1 is that the utility model transformer device structure is arranged vertical view;
Accompanying drawing 2 is the utility model device body winding Pareto diagrams;
Accompanying drawing 3 is the utility model electrical wiring schematic diagrams;
Accompanying drawing 4 is balance winding connection figure.
Among the figure: 1 permanent magnetic flux device body (main device body), 2 becomes magnetic flux device body (auxilliary device body), 3 balance windings (PV), 4 common winding (LV2), 5 pressure regulation windings (TV), 6 switching windings (LV1), 7 series connection windings (HV), 8 compensation windings (LV3), 9 field winding EV, 10 loaded switchs, 11 no load switch, 12 diverter switches.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail by embodiment.
In an embodiment, self coupling, low-voltage dual-voltage on-load-tap-changing transformer comprise permanent magnetic flux device body 1 (main device body) and become magnetic flux device body 2 (auxilliary device body); Permanent magnetic flux device has balance winding PV, common winding LV2, pressure regulation winding TV, switching winding L V1, series connection winding HV on one's body; Become the magnetic flux device compensation winding L V3, field winding EV are arranged on one's body.The iron core of two device bodies is the three-phase three-limb structure, and it is much bigger that permanent magnetic flux device body 1 becomes magnetic flux device body 2 physical dimensions, so can will become the end that magnetic flux device body quadrature places permanent magnetic flux device body.The transformer end is provided with three single-phase loaded switchs 10 in addition, is used for the on-load voltage regulation of low pressure.The high-pressure side of transformer is provided with three single-phase no load switch 11, is used for the No-load changer of high pressure.The low-pressure side of transformer also is provided with the diverter switch 12 of three single-phase No-load changers, is used for low voltage voltage and switches between two kinds of electric pressures.When the x-y of all no load switch UNICOM, low-pressure side can connect high voltage grade electrical network; When the x-z of all no load switch UNICOM, low-pressure side can connect low voltage grade electrical network.
Permanent magnetic flux device body puts in order to balance winding 3, common winding 4, pressure regulation winding 5, switches winding 6, series connection winding 7 from core limb winding from inside to outside; It is compensation winding 8, field winding 9 that change magnetic flux device body puts in order from core limb winding from inside to outside; Between these two device bodies be electrically connected for: series connection winding 7 is connected with common winding 4 and is the self coupling structure, select to switch winding 6 by diverter switch 12 and seal in the series connection winding or seal in common winding, between the electrical network of different electric pressures, switch to realize low pressure.
When low voltage voltage is low voltage, will compensate winding 8 with no load switch control and be series at pressure regulation winding 5 ends, field winding 9 is connected in parallel on pressure regulation winding 5 and the compensation winding 8.Like this, field winding is just given the compensation winding excitation be connected on pressure regulation winding end, make low pressure under low voltage during on-load voltage regulation voltage deviation as much as possible little.When low voltage voltage is high voltage, will compensate winding 8 and field winding 9 with no load switch control and excise from circuit, make the pressure regulation winding directly string at the common winding end, with the on-load voltage regulation of realization low pressure.In addition, also be provided with the balance winding 3 that a ground connects on one's body, so that circulation triple-frequency harmonics and zero sequence magnetic flux at permanent magnetic flux device.
Claims (4)
1. a self coupling, low-voltage dual-voltage on-load-tap-changing transformer, it is characterized in that comprising permanent magnetic flux device body (1) and become magnetic flux device body (2), permanent magnetic flux device is as main device body, become the magnetic flux device as auxilliary device body, permanent magnetic flux device body puts in order to balance winding (3), common winding (4), pressure regulation winding (5), switches winding (6), series connection winding (7) from core limb winding from inside to outside; It is compensation winding (8), field winding (9) that change magnetic flux device body puts in order from core limb winding from inside to outside.
2. according to the described self coupling of claim 1, low-voltage dual-voltage on-load-tap-changing transformer, it is characterized in that said permanent magnetic flux device body (1) and become magnetic flux device body (2) being arranged in the oil tank of transformer, is two three-phase three-limb transformer bodies.
3. according to the described self coupling of claim 2, low-voltage dual-voltage on-load-tap-changing transformer, it is big to it is characterized in that permanent magnetic flux device body becomes magnetic flux machine body structure size, will become the end that magnetic flux device body quadrature places permanent magnetic flux device body.
4. according to claim 1 or 2 described self coupling, low-voltage dual-voltage on-load-tap-changing transformers, it is characterized in that the transformer end is provided with three single-phase low-voltage loaded switches (10) in addition, is used for the on-load voltage regulation of low pressure; The high-pressure side of transformer is provided with three single-phase high pressure no load switch (11), is used for the No-load changer of high pressure; The low-pressure side of transformer also is provided with the diverter switch (12) of three single-phase No-load changers, is used for low voltage voltage and switches between two kinds of electric pressures.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203140836U CN201562573U (en) | 2009-11-05 | 2009-11-05 | Self-coupling low-voltage dual-voltage on-load voltage-regulating transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203140836U CN201562573U (en) | 2009-11-05 | 2009-11-05 | Self-coupling low-voltage dual-voltage on-load voltage-regulating transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201562573U true CN201562573U (en) | 2010-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203140836U Expired - Fee Related CN201562573U (en) | 2009-11-05 | 2009-11-05 | Self-coupling low-voltage dual-voltage on-load voltage-regulating transformer |
Country Status (1)
| Country | Link |
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| CN (1) | CN201562573U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050254A (en) * | 2012-12-24 | 2013-04-17 | 保定天威保变电气股份有限公司 | Single-phase low-voltage double-split transformer with functions of dual high voltage and off-circuit voltage regulation |
| CN103594238A (en) * | 2013-11-27 | 2014-02-19 | 山东电力设备有限公司 | Three-phase autotransformer |
| CN103632821A (en) * | 2012-09-04 | 2014-03-12 | 广州西门子变压器有限公司 | Autotransformer with voltage compensating device |
-
2009
- 2009-11-05 CN CN2009203140836U patent/CN201562573U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103632821A (en) * | 2012-09-04 | 2014-03-12 | 广州西门子变压器有限公司 | Autotransformer with voltage compensating device |
| CN103050254A (en) * | 2012-12-24 | 2013-04-17 | 保定天威保变电气股份有限公司 | Single-phase low-voltage double-split transformer with functions of dual high voltage and off-circuit voltage regulation |
| CN103594238A (en) * | 2013-11-27 | 2014-02-19 | 山东电力设备有限公司 | Three-phase autotransformer |
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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: 20100825 Termination date: 20121105 |