CN207199435U - The high-impedance transformer of middle pressure winding division arrangement - Google Patents
The high-impedance transformer of middle pressure winding division arrangement Download PDFInfo
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- CN207199435U CN207199435U CN201720950564.0U CN201720950564U CN207199435U CN 207199435 U CN207199435 U CN 207199435U CN 201720950564 U CN201720950564 U CN 201720950564U CN 207199435 U CN207199435 U CN 207199435U
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- pressure winding
- middle pressure
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Abstract
It the utility model is related to a kind of high-impedance transformer of middle pressure winding division arrangement, with upper oil tank, the main body fuel tank that lower oil tank is formed, transformer body, bushing, medium-tension bushing, high pressure neutral bushing, middle pressure neutral bushing, low-tension bushing and load ratio bridging switch, there is iron core inside transformer body, high pressure winding, middle pressure winding, low pressure winding and tap-changing windings, wherein middle pressure winding splits into two windings, transformer body is from inside to outside using the middle pressure winding I- low pressure winding arrangement architectures of iron core-middle pressure winding II- tap-changing windings-high pressure windings-.The utility model patent can meet the transformer for having same trend requirement to limit tap impedance, and its structure is under the early stage for meeting parameter request, it can be ensured that properties of product are safe and reliable, can fully ensure that the high-quality operation of product.
Description
Technical field
Transformer Manufacturing Technology is the utility model is related to, is specially a kind of high impedance transformation of middle pressure winding division arrangement
Device.
Background technology
For three winding high-impedance transformer, the method used at present has two kinds：One kind is winding normal alignment, i.e., by interior
Iron core-low pressure winding-middle pressure winding-high pressure winding-tap-changing windings are arranged as to outer, and in low pressure winding terminal tandem reactance
The structure of device；Another kind is to be inverted high pressure winding, from inside to outside using iron core-high pressure winding-middle pressure winding-tap-changing windings-
The arrangement mode of low pressure winding.
For the transformer in low pressure winding terminal tandem reactor, it is desirable to maximum tap during its height-low and high-middle operation
Impedance is maximum, minimum during height-low and high-middle operation to tap impedance minimum.And for the transformer of high pressure winding inverted structure,
Minimum tap impedance is maximum during height-low and high-middle operation, maximum during height-low and high-middle operation to tap impedance minimum.
It is minimum in maximum tap impedance when the design method of existing high impedance can not meet transformer height-middle operation simultaneously,
It is maximum when minimum tap impedance maximum and height-low operation to tap impedance maximum, impedance minimum this impedance change when minimum taps
The particular/special requirement of change trend.
Utility model content
It can not meet the particular/special requirement etc. of impedance variations trend for the design method of high-impedance transformer in the prior art
Deficiency, problem to be solved in the utility model are to provide a kind of high-impedance transformer of middle pressure winding division arrangement.
In order to solve the above technical problems, the technical solution adopted in the utility model is：
A kind of high-impedance transformer of middle pressure winding division arrangement of the utility model, has upper oil tank, lower oil tank shape
Into main body fuel tank, transformer body, bushing, medium-tension bushing, high pressure neutral bushing, it is middle pressure neutral bushing, low pressure
Sleeve pipe and load ratio bridging switch, transformer body inside have iron core, high pressure winding, middle pressure winding, low pressure winding and tune
Winding is pressed, wherein middle pressure winding splits into two windings, transformer body is from inside to outside using iron core-middle pressure winding II-tune
Press winding-high pressure winding-middle pressure winding I-low pressure winding arrangement architecture.
Transformer body is pressurizeed using fire hose as pressing device, and is added between fire hose and transformer body
If cushion block carries out device body compression；Upper part of transformer body is provided with top board, and pin is along the circumferential direction uniformly laid in top board outward flange
Son.
For middle pressure winding II to be inverted, i.e., first head is placed on bottom, the last head with middle pressure winding I in bottom sleeve connection,
Middle pressure winding II last head presses neutral bushing in being connected on top.
Middle pressure winding I first head is drawn from top enters medium-tension bushing.
Except low pressure winding is lifted one's head, the upper and lower part of other windings is lifted one's head to be protected using the molding part of sulfate pulp
Shield.
Static board is placed in tap-changing windings, high pressure winding and middle pressure winding I upper ends, and middle pressure winding II bottoms are placed quiet
Electroplax.
Iron core is three-phase and five-pole structure, by three iron core principal posts, two other posts, four upper yokes and four lower yoke pieces into three-phase
The closed magnetic circuit of transformer；Iron core is combined using arm-tie, folder, iron core top using drawstring and upper beam；Mandrel lower is drawing
Band and feet are combined, and side uses curb girder.
On folder and main body fuel tank internal places copper shield.
The utility model has the advantages that and advantage：
1. the utility model patent can meet the transformer for having same trend requirement to limit tap impedance, its structure exists
Meet under the early stage of parameter request, it can be ensured that properties of product are safe and reliable, can fully ensure that the high-quality operation of product.
Brief description of the drawings
Fig. 1 is the utility model transformer front view；
Fig. 2 is Fig. 1 left view；
Fig. 3 is Fig. 1 top view；
Fig. 4 is the utility model transformer core and folder from top to bottom schematic diagram；
Fig. 5 is Fig. 4 left view；
Fig. 6 is Fig. 4 top view；
Fig. 7 is the utility model winding arrangement structure schematic diagram；
Fig. 8 is that the utility model fuel tank internal copper shield places schematic diagram；
Fig. 9 is the utility model device body and schematic diagram of lifting one's head；
Figure 10 is the utility model device body bottom and schematic diagram of lifting one's head；
Figure 11 is that head end and end cabling schematic diagram are pressed in the utility model；
Figure 12 is to press winding connection diagram in two of the utility model division.
Wherein, 1 is transformer body, and 2 be bushing, and 3 be medium-tension bushing, and 4 be high pressure neutral bushing, and 5 be middle pressure
Neutral bushing, 6 be low-tension bushing, and 7 be oil conservater, and 8 be upper oil tank, and 9 be lower oil tank, and 10 be radiator, and 11 be to have load
Shunting switch, 12 be the iron core for being cased with winding, and 13 be iron-core draw-board, and 14 be upper clamping piece, and 15 be lower clamping piece, and 16 be in eyebrow window
Drawstring, 17 be the outer drawstring of eyebrow window, and 18 be upper beam, and 19 be drawstring in the window of bottom, and 20 be bottom drawstring outside window, and 21 be feet, 22
It is folder copper shield for curb girder, 23,24 be fuel tank copper shield.MVII is tap-changing windings for middle pressure winding II, TV, and HV is high pressure
Winding, MVI are low pressure winding for middle pressure winding I, LV.
Embodiment
The utility model is further elaborated with reference to Figure of description.
As shown in Figures 1 to 3, the high-impedance transformer of winding division arrangement is pressed in the utility model, is had by upper oil tank
8th, main body fuel tank, bushing 2, medium-tension bushing 3, high pressure neutral bushing 4, the middle pressure neutral bushing of the formation of lower oil tank 9
5th, low-tension bushing 6, the cabinet of oil storage 7, radiator 10 and load ratio bridging switch 11, iron core are arranged in main body fuel tank, also have height
Press winding HV, middle pressure winding, low pressure winding LV and tap-changing windings TV, wherein middle pressure winding pressed in splitting into two windings i.e. around
Group I and middle pressure winding II, transformer body is from inside to outside using iron core-middle pressure winding II-tap-changing windings TV-high pressure winding
HV-middle pressure winding I MVI-low pressure winding LV arrangement architectures.High pressure winding HV end pressure regulation, all windings are in upper and lower end parts
Lift one's head.
In order that transformer it is high-middle operation when it is minimum in maximum tap impedance, minimum tap impedance is maximum.High-low operation
When maximum tap impedance it is maximum, impedance is minimum during minimum tap, and limit tap impedance and specified tap impedance deviation are smaller, originally
Utility model uses coils arrangement as shown in Figure 7 so that the calculated value of impedance meets the requirement of agreement.
As shown in figures 4-6, three-phase and five-pole iron core 12 is set in upper oil tank 8, lower oil tank 9, by three iron core principal posts,
The closed magnetic circuit of two other posts, four upper yokes with four lower yoke pieces into three-phase transformer.Simultaneously using iron-core draw-board 13, upper clamping piece
14th, lower clamping piece 15, the outer drawstring 17 of drawstring 16, eyebrow window and upper beam 18 are combined in eyebrow window；Bottom is drawstring 19, bottom in window
Drawstring 20 and feet 21 are combined outside window, and side is ensured the clamping of lamination, the lifting of device body, compressed using the structure of curb girder 22
And the mechanical strength under short-circuit condition.Because it is high-impedance transformer, cause part on folder in order to avoid leakage field is excessive
Overheat, folder copper shield 23 is placed per post in folder from top to bottom.In order to avoid fuel tank hot-spot, placed in fuel tank internal as schemed
Fuel tank copper shield 24 shown in 8.
Bushing 2 totally three, respectively by being fixed on upper oil tank 8；High pressure neutral bushing 4 is arranged in high pressure A
Phase sleeve pipe side；Medium-tension bushing 3, low-tension bushing 6 and middle pressure neutral bushing 5 are arranged in the side away from bushing 2
To；Oil conservater 7 is parallel to transformer long axis direction；Radiator 10 is arranged in the high and low pressure side of transformer, with transformer major axis side
To parallel；One end of the switch arrangement in transformer long axis direction.
As shown in figs. 9 to 12, the inside machine body structure used for transformer 1.Transformer low voltage winding LV and tap-changing windings
TV is using spirally, and middle pressure winding II and middle pressure winding I use continous way, and high pressure winding improves end using inner screen continuous
The distribution of surge voltage.Static board is placed to improve end in tap-changing windings TV, high pressure winding HV and middle pressure winding I MVI upper ends
Electric field.As shown in figure 9, in addition to low pressure winding LV, all axial directions of lifting one's head are drawn from pressing plate.Exterior loop low pressure winding LV axial directions
Drawn under pressing plate.In addition to low pressure winding LV lifts one's head, lifting one's head for other windings is protected using the molding part of sulfate pulp
Shield, ensures insulation distance and the dielectric strength lifted one's head, so as to ensure that the insulating properties of product are safe and reliable.Device body, which compresses to use, to disappear
The pressing device of anti-band pressurization, long cushion block is filled in behind using fire hose compactor and carries out compactor body.Pressing plate is outer with device
Along the circumferential direction uniform riveting has pin at edge, to strengthen strength of compressive plate and avoid pressing plate from ftractureing.
As shown in Figure 10, it is the arrangement of the inside device body bottom of transformer 1 and tap structure figure.In addition to low pressure winding LV lifts one's head,
The lifting one's head also with top to lift one's head of other windings is equally protected using the molding part of sulfate pulp.Middle pressure winding II
For MVII because being inverted, line current potential is high, and static board is placed in bottom improves Analysis of End Electric Field.The major insulation between each winding is embodied in figure
Between use traditional thin paper cylinder small oil gap structure, ensure that product electric property is reliable, while also ensure that the heat dispersion of product
Reach requirement.
In two of division winding will be pressed to be connected for convenience, middle pressure winding II MVII are inverted, it is first
Head is placed on bottom, and the last first sample with middle pressure winding I is drawn from the iron yoke cushion block of bottom, as shown in Figure 10, and it is being gone out
Correct position after iron yoke cushion block is joined directly together with sleeve to be connect, as shown in figure 12.
As shown in figure 11, middle pressure winding I MVI first head diameter enters medium-tension bushing 3, and inverted middle pressure winding II
MVII last head is directly connected to middle pressure neutral bushing 5.
Claims (8)
1. a kind of high-impedance transformer of middle pressure winding division arrangement, the main body fuel tank formed with upper oil tank, lower oil tank,
Transformer body, bushing, medium-tension bushing, high pressure neutral bushing, it is middle pressure neutral bushing, low-tension bushing and have load point
Connect switch, it is characterised in that：Have inside transformer body iron core, high pressure winding, middle pressure winding, low pressure winding and pressure regulation around
Group, wherein middle pressure winding splits into two windings, transformer body from inside to outside using iron core-middle pressure winding II-pressure regulation around
Group-high pressure winding-middle pressure winding I-low pressure winding arrangement architecture.
2. the high-impedance transformer of middle pressure winding division arrangement according to claim 1, it is characterised in that：Transformer body
Pressurizeed using fire hose as pressing device, and add cushion block between fire hose and transformer body and carry out device body pressure
Tightly；Upper part of transformer body is provided with top board, and pin is along the circumferential direction uniformly laid in top board outward flange.
3. the high-impedance transformer of middle pressure winding division arrangement according to claim 1, it is characterised in that：Middle pressure winding II
To be inverted, i.e., first head is placed on bottom, and the last head with middle pressure winding I exists in bottom sleeve connection, middle pressure winding II last head
Top is connected to middle pressure neutral bushing.
4. the high-impedance transformer of middle pressure winding division arrangement according to claim 3, it is characterised in that：Middle pressure winding I
First head from top draw enter medium-tension bushing.
5. the high-impedance transformer of middle pressure winding division arrangement according to claim 1, it is characterised in that：Low pressure winding goes out
Except head, the upper and lower part of other windings is lifted one's head to be protected using the molding part of sulfate pulp.
6. the high-impedance transformer of middle pressure winding division arrangement according to claim 1, it is characterised in that：Tap-changing windings,
Static board is placed in high pressure winding and middle pressure winding I upper ends, and static board is placed in middle pressure winding II bottoms.
7. the high-impedance transformer of middle pressure winding division arrangement according to claim 1, it is characterised in that：Iron core is three-phase
Five rod structures, by the closed magnetic circuit of three iron core principal posts, two other posts, four upper yokes with four lower yoke pieces into three-phase transformer；
Iron core is combined using arm-tie, folder, iron core top using drawstring and upper beam；Mandrel lower is that drawstring and feet are combined, side
Face uses curb girder.
8. the high-impedance transformer of middle pressure winding division arrangement according to claim 1, it is characterised in that：It is on folder and main
Body fuel tank internal places copper shield.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720950564.0U CN207199435U (en) | 2017-08-01 | 2017-08-01 | The high-impedance transformer of middle pressure winding division arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720950564.0U CN207199435U (en) | 2017-08-01 | 2017-08-01 | The high-impedance transformer of middle pressure winding division arrangement |
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| Publication Number | Publication Date |
|---|---|
| CN207199435U true CN207199435U (en) | 2018-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720950564.0U Active CN207199435U (en) | 2017-08-01 | 2017-08-01 | The high-impedance transformer of middle pressure winding division arrangement |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109326422A (en) * | 2017-08-01 | 2019-02-12 | 特变电工沈阳变压器集团有限公司 | A kind of high-impedance transformer of middle pressure winding division arrangement |
-
2017
- 2017-08-01 CN CN201720950564.0U patent/CN207199435U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109326422A (en) * | 2017-08-01 | 2019-02-12 | 特变电工沈阳变压器集团有限公司 | A kind of high-impedance transformer of middle pressure winding division arrangement |
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