CN205487674U - High -power oily formula high -voltage frequency converters transformer winding structure - Google Patents
High -power oily formula high -voltage frequency converters transformer winding structure Download PDFInfo
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- CN205487674U CN205487674U CN201620252782.2U CN201620252782U CN205487674U CN 205487674 U CN205487674 U CN 205487674U CN 201620252782 U CN201620252782 U CN 201620252782U CN 205487674 U CN205487674 U CN 205487674U
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Abstract
The utility model relates to a high -power oily formula high -voltage frequency converters transformer winding structure, constitute including three line side winding and six valve side winding, three line side winding capacity, voltage equal, are the axial division and arrange, six valve side winding capacity, output voltage equal that per two valve side winding be a set of, and three valve side winding groups of group are the axial division and arrange, corresponding line side winding of every valve side winding group to it arranges to be radial division with corresponding line side winding. The beneficial effects of the utility model are that: the problem of power unit hinder the transformer winding unit that the bypass arouses for some reason in the ampere -turn uneven is solved, avoided guaranteeing because of uneven axial electric power that arouses of ampere -turn and additional eddy current loss that transformer three -phase output is the same, reduced transformer height of center of gravity simultaneously, messenger variable frequency speed device is in the long -term safety of speed governing within range, the reliability service of broad, reduction operating power consumption, just transportation, installation maintenance convenience.
Description
Technical field
This utility model relates to a kind of high-power oil-immersed and high-voltage variable-frequency transformer winding construction.
Background technology
Chinese patent literature CN203423055U discloses a kind of high-power high voltage frequency conversion oil immersed type rectification and becomes
Depressor, is made up of two 18 pulse wave rectifier transformer bodies, and it is equal that the net side in the most each device body is divided into capacity
Three windings, axial arranged；Valve side sets 6 equal, axial arranged valve side windings of capacity, a net
Side winding and the identical valve side winding of two phase shifting angles are corresponding, constitute a winding group.
The feature of the technical scheme of this patent documentation is: when converter plant is properly functioning, and this winding is arranged
Mode has different net, and between side, valve side winding, impedance matching is good, readily satisfy system to short-circuit impedance deviation
Requirement, three-phase output voltage degree of unbalancedness is little, the features such as low is lost.
The technical scheme of this patent documentation is disadvantageous in that: 1) when a certain power cell is because fault is through bypass
After out of service, the transformer secondary winding powered for this power cell will be in open-circuit condition.Now, this two
In group residing for secondary winding, wherein another group valve side winding will be run, in this fortune by a source side winding
Under row state, uneven owing to there is serious ampere-turn between net, valve side winding, bigger radial by producing
Leakage field component, and the Interaction Law of Electric Current in winding, larger axis will be produced on net, valve side winding to power,
Under the common effect of the short-circuit force produced with rectifier cell commutation, easily making winding insulation impaired, impact is produced
Product long-term safety is run；2) corresponding with the valve side winding in open running source side winding corresponding site will produce
Relatively maelstrom is lost, and causes hot-spot, and acceleration winding insulation is aging, affects product long-term safety fortune equally
OK；3) when valve side winding uses axial arranged mode, the installation dimension of complete machine short transverse is relatively big, center of gravity
Higher, it has not been convenient to transport and in-site installation, maintenance.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of high-power oil-immersed and high-voltage variable-frequency variable-voltage
Device winding construction, eliminates Partial Power unit because of failure bypass brought ampere-turn imbalance increase out of service
And harmful effect, it is ensured that frequency conversion speed-adjusting system is reliable, safe operation in wider speed adjustable range.
This utility model solves its technical problem and be the technical scheme is that a kind of high-power oil-immersed and high-voltage
Variable-frequency transformer winding construction, is constituted including three source side winding and six valve side windings, and three source side winding hold
Amount, voltage are equal, arrange in axial split, are connected in parallel, six valve side coil volume, output voltage phases
Deng, each two valve side winding is one group, totally three groups, and three Zu Face winding groups are that axial split is arranged, often
Two valve side windings in the corresponding source side winding of Ge Face winding group, and Fa Ce winding group and right
The source side winding answered is that radial division is arranged, two valve side windings in Fa Ce winding group are positioned at the net of correspondence
The both sides of side winding, between two valve side windings in each Fa Ce winding group, phase shift differential seat angle is 30 °.
Limiting further, three source side winding of every transformer body use Y to connect or D connects mode, every
Six valve side windings of transformer body are respectively adopted hexagon, Y connects and connects mode with D and carry out phase shift.
Limit further, between source side winding and valve side winding, be provided with earthing screen device, earthing screen device
Lead-out wire drawn by the grounding sleeve that is arranged on oil tank of transformer lid after parallel connection in oil tank of transformer and connect
Ground.
The beneficial effects of the utility model are: by use source side winding axial split, valve side axis of winding and
Radial combination division arrangement, solves present in prior art merit in frequency conversion speed-adjusting system running
Ampere-turn imbalance problem in the Transformer Winding unit that rate unit causes because of failure bypass, it is to avoid because of ampere-turn not
Axial electric power and extraneous turbulence that balance causes are lost, it is ensured that Three-Phase Transformer output is identical；Simultaneously
Reduce transformator height of C.G., make RHVC long-term safety, reliable in wider speed adjustable range
Run, reduce operation energy consumption, and transport, convenient for installation and maintenance.
Accompanying drawing explanation
With embodiment, this utility model is further illustrated below in conjunction with the accompanying drawings；
Fig. 1 is winding construction schematic diagram of the present utility model；
Fig. 2 is the Leakage flux distribution figure of Fa Ce under normal circumstances of the present utility model winding group；
Fig. 3 is the Leakage flux distribution figure of Fa Ce winding group in the case of power cell fault of the present utility model；
Fig. 4 is the elementary diagram of the high-pressure frequency-conversion transformator using winding construction of the present utility model；
In figure, 1. source side winding, 2. valve side winding, 3. power cell.
Detailed description of the invention
As it is shown in figure 1, a kind of high-power oil-immersed and high-voltage variable-frequency transformer winding construction, including three net sides
Winding 1 and six valve side windings 2 are constituted, between source side winding 1 and valve side winding 2 insulate, three net side around
Organize 1 capacity, voltage equal, arrange in axial split, be connected in parallel, six valve side winding 2 capacity, defeated
Going out voltage equal, each two valve side winding 2 is one group, totally three groups, and three Zu Face winding groups are in axially point
Split layout, two valves in the corresponding source side winding 1 of each Fa Ce winding group, and Fa Ce winding group
Side winding 2 and corresponding source side winding 1 are arranged in radial division, two valve sides in Fa Ce winding group around
Group 2 is positioned at the both sides of source side winding 1 of correspondence, between two valve side windings 2 in each Fa Ce winding group
Phase shift differential seat angle is 30 °.
Three source side winding 1 of every transformer body use Y to connect or D connects mode, every transformer body
Six valve side windings 2 be respectively adopted hexagon, Y connects and connects mode with D and carry out phase shift, phase shifting angle error ±
In 0.5 °, be conducive to reducing valve side winding 2 output voltage deviation.
It is whole that the transformator valve side winding using this transformer winding structure is connected formation 36 pulse waves with power cell 3
Stream mode.
Hexagon connection mode is used to carry out the Phase shift winding in the valve side winding 2 of phase shift and between basic winding
Relatively position can be according to two valve side windings 2 in Fa Ce winding group to the short-circuit impedance between high pressure winding
Match condition is interchangeable；Between the winding that axial split is arranged, insulation uses and is made up of stay chain and composite block
Insulation system.
It is provided with earthing screen device, earthing between source side winding 1 and the valve side winding 2 of transformer body
Cover the lead-out wire of device in oil tank of transformer after parallel connection by being arranged on the grounding sleeve on oil tank of transformer lid
Draw ground connection.
As shown in figs. 1 and 4:
Two 36 identical pulse wave rectifier transformer bodies constitute high-power 36 pulse wave oil-immersed and high-voltage frequency conversions and become
Depressor, the winding construction of separate unit 36 pulse wave rectifier transformer body is as it has been described above, six valve side windings 2 are distinguished
Connect with the input side of corresponding power cell 3, six valve side windings 2 of single transformer device body respectively with
The input side of corresponding power cell connects, the power that two valve side windings 2 in Fa Ce winding group connect
Unit is a power cell group, and three power cell groups respectively constitute-50 ° and-20 ° ,-40 °
With-10 ° and-30 ° and 0 ° of phase shifting angle, two power cells in power cell group are mutual at outlet side
Series connection, and respectively with the composition-30 ° in another transformer body and 0 ° ,-50 ° and-20 ° and-
40 ° are corresponding in turn to the power cell group of-10 ° of phase shifting angles and connect as big group of power cell, power list
In outlet side Y-connection between the big group of unit, constitute the three-phase inlet wire of high-voltage motor.
As shown in Figures 2 and 3: by using source side winding axial split, valve side axis of winding and radial combination
Division arrangement, solve present in prior art in frequency conversion speed-adjusting system running power cell because of
Ampere-turn imbalance problem in the Transformer Winding unit that failure bypass causes, it is to avoid because ampere-turn imbalance causes
Axial electric power and extraneous turbulence loss, it is ensured that Three-Phase Transformer output is identical；Reduce change simultaneously
Depressor height of C.G., makes RHVC long-term safety, reliability service in wider speed adjustable range, fall
Low operation energy consumption, and transport, convenient for installation and maintenance.
Claims (3)
1. a high-power oil-immersed and high-voltage variable-frequency transformer winding construction, is characterized in that: include three net sides
Winding (1) and six valve sides winding (2) are constituted,
Three source side winding (1) capacity, voltage are equal, arrange in axial split, are connected in parallel,
Six valve side winding (2) capacity, output voltage are equal, and each two valve side winding (2) is one group,
Totally three groups, three Zu Face winding groups are that axial split is arranged,
Two valves in the corresponding source side winding (1) of each Fa Ce winding group, and Fa Ce winding group
Side winding (2) and corresponding source side winding (1) are arranged in radial division, two in Fa Ce winding group
Valve side winding (2) is positioned at the both sides of the source side winding (1) of correspondence,
Between two valve sides winding (2) in each Fa Ce winding group, phase shift differential seat angle is 30 °.
High-power oil-immersed and high-voltage variable-frequency transformer winding construction the most according to claim 1, its feature
It is: three source side winding (1) of every described transformer body use Y to connect or D connects mode, every change
Six valve sides winding (2) of depressor device body are respectively adopted hexagon, Y connects and connects mode with D and carry out phase shift.
High-power oil-immersed and high-voltage variable-frequency transformer winding construction the most according to claim 1, its feature
It is: between source side winding (1) and valve side winding (2), be provided with earthing screen device, earthing screen device
Lead-out wire drawn by the grounding sleeve that is arranged on oil tank of transformer lid after parallel connection in oil tank of transformer and connect
Ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620252782.2U CN205487674U (en) | 2016-03-30 | 2016-03-30 | High -power oily formula high -voltage frequency converters transformer winding structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620252782.2U CN205487674U (en) | 2016-03-30 | 2016-03-30 | High -power oily formula high -voltage frequency converters transformer winding structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205487674U true CN205487674U (en) | 2016-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620252782.2U Expired - Fee Related CN205487674U (en) | 2016-03-30 | 2016-03-30 | High -power oily formula high -voltage frequency converters transformer winding structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205487674U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655105A (en) * | 2016-03-30 | 2016-06-08 | 常州东芝舒电变压器有限公司 | Winding structure of high-power oil-immersed type high voltage variable frequency transformer |
-
2016
- 2016-03-30 CN CN201620252782.2U patent/CN205487674U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105655105A (en) * | 2016-03-30 | 2016-06-08 | 常州东芝舒电变压器有限公司 | Winding structure of high-power oil-immersed type high voltage variable frequency transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160817 Termination date: 20190330 |