CN201478098U - Ultrahigh voltage transformer - Google Patents
Ultrahigh voltage transformer Download PDFInfo
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- CN201478098U CN201478098U CN2009201611454U CN200920161145U CN201478098U CN 201478098 U CN201478098 U CN 201478098U CN 2009201611454 U CN2009201611454 U CN 2009201611454U CN 200920161145 U CN200920161145 U CN 200920161145U CN 201478098 U CN201478098 U CN 201478098U
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- 238000004804 winding Methods 0.000 claims abstract description 33
- 230000001105 regulatory effect Effects 0.000 claims description 35
- 239000002828 fuel tank Substances 0.000 claims description 11
- 230000007935 neutral effect Effects 0.000 claims description 8
- 230000005284 excitation Effects 0.000 claims description 7
- 230000004907 flux Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 2
- 238000001816 cooling Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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Abstract
The utility model provides an ultrahigh voltage transformer, comprising a main body transformer, a voltage-regulating transformer and a low-voltage voltage compensator, wherein the main body transformer and the voltage-regulating transformer are connected into a neutral-point variable-flux voltage-regulating mode; a low-voltage winding of the main body transformer is connected with an exciting winding of the voltage-regulating transformer in parallel; a voltage-regulating winding of the voltage-regulating transformer is connected with an exciting winding of the low-voltage voltage compensator in parallel; and the low-voltage winding of the main body transformer is connected with a compensating winding of the low-voltage voltage compensator in series. The ultrahigh voltage transformer reduces the size and weight of the main body transformer, meets the requirements of road transportation, leads the transportation of ultrahigh-voltage and large-capacity transformers to be feasible, adopts a tubular busbar for connecting the main body transformer and the voltage-regulating transformer simultaneously, and has simple structure and convenient installation.
Description
Technical field
The utility model relates to the high voltage installation technical field, particularly a kind of extra-high voltage transformer.
Background technology
It is that 1000MVA, voltage are the single-phase autotransformer of 1000kV that the southeast, China Shanxi-Jingmen 1000kV AC extra high voltage needs capacity.This transformer need be made in Baoding, and omnidistance highway transportation is to the Changzhi, Shanxi.The transformer shipping height is subjected to certain limitation, must not be above 5 meters from the 1000kV transformer body shipping height of Baoding transportation.
Requirements such as capacity, electric pressure and performance parameter according to China 1000kV AC extra high voltage transformer, if the autotransformer structure designs routinely, under the requirement of satisfying electricity, magnetic, heat, power etc., its volume, weight will be considerably beyond the requirement of railway, highway transportation boundary and load transported.The transportation of transformer becomes the important step of restriction ultra high voltage, the development of vast capacity autotransformer.
The utility model content
Problem to be solved in the utility model provides a kind of extra-high voltage transformer, and this volume of transformer is little, is convenient to transportation.
The utility model provides a kind of extra-high voltage transformer, comprises main body transformer, voltage regulating transformer and low voltage voltage compensator;
Described main body transformer and voltage regulating transformer connect into neutral point variable flux voltage regulation mode;
The low pressure winding of described main body transformer is in parallel with the excitation winding of described voltage regulating transformer;
The pressure regulation winding of described voltage regulating transformer is in parallel with the excitation winding of described low voltage voltage compensator;
The low pressure winding of described main body transformer and the compensation windings in series of described low voltage voltage compensator.
Preferably, described main body transformer is provided with first fuel tank.
Preferably, described voltage regulating transformer and low voltage voltage compensator are provided with second fuel tank jointly.
Preferably, described main body transformer is provided with first conservator.
Preferably, described voltage regulating transformer and low voltage voltage compensator are provided with second conservator jointly.
Preferably, described main body transformer is provided with first cooler, and described first cooler has oil pump and fan, adopts the strong oil wind cold type.
Preferably, described voltage regulating transformer and low voltage voltage compensator are provided with second cooler, and described second cooler is a gilled radiator, adopt oil-immersed self-cooled.
Preferably, described main body transformer is provided with bushing, is used to connect outside lead.
Compared with prior art, the utlity model has following advantage:
The extra-high voltage transformer that the utility model provides, with main body transformer, voltage regulating transformer and low voltage voltage compensator separate design, the main body transformer independently is provided with a fuel tank, voltage regulating transformer and low voltage voltage compensator are arranged on same fuel tank, can effectively reduce the structure of main body transformer like this, insulating properties is higher, has reduced the size and the weight of main body transformer simultaneously, satisfy the requirement of highway transportation, make the transportation of ultra high voltage, high-power transformer feasible.While main body transformer is taked to manage bus with voltage regulating transformer and is connected, and is simple in structure, is convenient to install.
Description of drawings
Fig. 1 is based on the utility model extra-high voltage transformer winding diagram;
Fig. 2 is based on the vertical view of the utility model extra-high voltage transformer;
Fig. 3 is based on the utility model extra-high voltage transformer left view corresponding with Fig. 2;
Fig. 4 is based on the utility model extra-high voltage transformer front view corresponding with Fig. 2.
Embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.
Referring to Fig. 1, this figure is based on the utility model extra-high voltage transformer winding diagram.
The extra-high voltage transformer that present embodiment provides comprises main body transformer 100, voltage regulating transformer 200 and low voltage voltage compensator 300.
Described main body transformer 100 and voltage regulating transformer 200 connect into neutral point variable flux voltage regulation mode.
The series connection winding SV of main body transformer 100 connects with common winding CV.
The common winding CV of main body transformer 100 connects with the pressure regulation winding TV of described voltage regulating transformer 200 by the first pipe bus, as the first pipe bus that is connected between terminal 1X among Fig. 1 and the 2X.The low pressure winding L V of described main body transformer 100 is in parallel with the excitation winding EV of described voltage regulating transformer 200 by the second pipe bus, the 3rd pipe bus.As between end points 1a among Fig. 1 and the 2a be connected to first the pipe bus, between end points 1x and the 2x be connected to second the pipe bus.
The pressure regulation winding TV of described voltage regulating transformer 200 is in parallel with the low pressure excitation winding LE of described low voltage voltage compensator 300.
The low pressure winding L V of described main body transformer 100 connects with the compensation winding L T of described low voltage voltage compensator 300 by the 3rd pipe bus.As end points 1x and the 2x among Fig. 1.
Need to prove that the effect of the above-mentioned first pipe bus, the second pipe bus and the 3rd pipe bus only is that two windings are coupled together, certainly, be not limited to only have pipe this material of bus or form connect, for example can use cable that two windings are coupled together.
The following describes the implication of label among accompanying drawing 2, Fig. 3 and Fig. 4:
A is the high-tension line exit of main body transformer 100, and promptly A is a HV Terminal.
Am is the medium-voltage line exit of main body transformer 100, and promptly Am is intermediate voltage terminal.
A, x are the low-voltage circuit exits, and promptly a and x are low-voltage terminals.
X is the circuit exit of neutral point, and promptly X is a neutral terminal.
When voltage need be adjusted, can adjust by the no field switch on the voltage regulating transformer 200.
When adjusting voltage, cause the low voltage voltage fluctuation easily, at this moment, remain unchanged substantially, can carry out the low voltage voltage compensation by the low voltage voltage compensator in order to guarantee low voltage voltage.Like this, main body transformer, voltage regulating transformer and low voltage voltage compensator constitute the autotransformer with voltage regulation function together.
The extra-high voltage transformer that present embodiment provides, with main body transformer, voltage regulating transformer and low voltage voltage compensator separate design, the main body transformer independently is provided with a fuel tank, voltage regulating transformer and low voltage voltage compensator are arranged on same fuel tank, can effectively reduce the structure of main body transformer like this, insulating properties is higher, has reduced the size and the weight of main body transformer simultaneously, satisfy the requirement of highway transportation, make the transportation of ultra high voltage, high-power transformer feasible.While main body transformer is taked to manage bus with voltage regulating transformer and is connected, and is simple in structure, is convenient to install.
Referring to Fig. 2, this figure is the vertical view based on the utility model extra-high voltage transformer.
As can be seen from Figure 2, this extra-high voltage transformer comprises main body transformer 100, voltage regulating transformer 200.Need to prove that low voltage voltage compensator and voltage regulating transformer 200 are positioned at same fuel tank, do not show the low voltage voltage compensator among the figure.
Because main body transformer 100 capacity are big, the generation loss is bigger, and then it is big to produce heat.For the temperature rise of more effective reduction main body transformer 100, main body transformer 100 adopts strong oil wind cold type cooler 102, chiller belt oil pump and fan.
Winding between main body transformer 100 and the voltage regulating transformer 200 connects by 3 pipe buses 400.
Need to prove that the major parameter of the extra-high voltage transformer that present embodiment provides is:
Rated capacity: 1000/1000/334MVA
The voltage combination:
Joint group label: Ia0i0 (YNa0d11 three-phase joint group)
Impedance voltage: H-M:18% ± 5% H-L:62% ± 5% M-L:40% ± 5%
Insulation level:
H.v. line terminal SI/LI/AC (5min) 1800/2250/1100kV
H.v./m.v. neutral terminal LI/AC 325/140kV
M.v. line terminal SI/LI/AC 1175/1550/630kV
L.v. line terminal LI/AC 650/275kV
Rated frequency: 50Hz
Voltage regulating mode: neutral point non-excitation pressure adjustment
Neutral point operational mode: direct ground connection
The type of cooling: OFAF/ONAN (self coupling change/pressure regulation change)
Referring to Fig. 3, this figure is based on the utility model extra-high voltage transformer left view corresponding with Fig. 2.
In left view 3, can see on the described main body transformer 100 being provided with bushing 103, be used to connect outside lead.
Identical among other parts and Fig. 2 do not repeat them here.
Need to prove that the parameter of bushing is:
The bushing electric pressure, rated voltage Ur:1100kV
Insulation level: (5min) power-frequency withstand voltage (doing) (root-mean-square value): 1200kV in short-term
Lightning whole wave impact withstand voltage (peak value): 2400kV
Thunder and lightning cuts wave impact withstand voltage (peak value): 2760kV
Switching impulse withstand voltage (wetting) (peak value): 1950kV
The bending strength height, the bend loading tolerance of sleeve pipe: 11000N.
Referring to Fig. 4, this figure is based on the utility model extra-high voltage transformer front view corresponding with Fig. 2.
Fig. 4 is the front view of the extra-high voltage transformer corresponding with Fig. 2, because main body transformer 100 has blocked voltage regulating transformer not shown in this Figure with voltage regulating transformer.
Can see that main body transformer 100 comprises first conservator, 101, the first coolers 102 and bushing 103.
The above only is preferred embodiment of the present utility model, is not the utility model is done any pro forma restriction.Though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model.Any those of ordinary skill in the art, do not breaking away under the technical solutions of the utility model scope situation, all can utilize the method and the technology contents of above-mentioned announcement that technical solutions of the utility model are made many possible changes and modification, or be revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical solutions of the utility model, all still belongs in the scope of technical solutions of the utility model protection any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present utility model.
Claims (8)
1. an extra-high voltage transformer is characterized in that, comprises main body transformer, voltage regulating transformer and low voltage voltage compensator;
Described main body transformer and voltage regulating transformer connect into neutral point variable flux voltage regulation mode;
The low pressure winding of described main body transformer is in parallel with the excitation winding of described voltage regulating transformer;
The pressure regulation winding of described voltage regulating transformer is in parallel with the excitation winding of described low voltage voltage compensator;
The low pressure winding of described main body transformer and the compensation windings in series of described low voltage voltage compensator.
2. extra-high voltage transformer according to claim 1 is characterized in that, described main body transformer is provided with first fuel tank.
3. extra-high voltage transformer according to claim 1 is characterized in that, described voltage regulating transformer and low voltage voltage compensator are provided with second fuel tank jointly.
4. extra-high voltage transformer according to claim 1 is characterized in that, described main body transformer is provided with first conservator.
5. extra-high voltage transformer according to claim 1 is characterized in that, described voltage regulating transformer and low voltage voltage compensator are provided with second conservator jointly.
6. extra-high voltage transformer according to claim 1 is characterized in that, described main body transformer is provided with first cooler, and described first cooler has oil pump and fan, adopts the strong oil wind cold type.
7. extra-high voltage transformer according to claim 1 is characterized in that, described voltage regulating transformer and low voltage voltage compensator are provided with second cooler, and described second cooler is a gilled radiator, adopts oil-immersed self-cooled.
8. extra-high voltage transformer according to claim 1 is characterized in that, described main body transformer is provided with bushing, is used to connect outside lead.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201611454U CN201478098U (en) | 2009-07-03 | 2009-07-03 | Ultrahigh voltage transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201611454U CN201478098U (en) | 2009-07-03 | 2009-07-03 | Ultrahigh voltage transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201478098U true CN201478098U (en) | 2010-05-19 |
Family
ID=42414357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201611454U Expired - Fee Related CN201478098U (en) | 2009-07-03 | 2009-07-03 | Ultrahigh voltage transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201478098U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108242328A (en) * | 2017-11-28 | 2018-07-03 | 山东泰开变压器有限公司 | Extra-high voltage single-circuit transformer based on single-phase non-excitation pressure adjustment |
| CN110085405A (en) * | 2019-05-21 | 2019-08-02 | 保定天威保变电气股份有限公司 | A kind of transformer built-in voltage compensator and voltage compensating method |
-
2009
- 2009-07-03 CN CN2009201611454U patent/CN201478098U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108242328A (en) * | 2017-11-28 | 2018-07-03 | 山东泰开变压器有限公司 | Extra-high voltage single-circuit transformer based on single-phase non-excitation pressure adjustment |
| CN110085405A (en) * | 2019-05-21 | 2019-08-02 | 保定天威保变电气股份有限公司 | A kind of transformer built-in voltage compensator and voltage compensating method |
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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: 20100519 Termination date: 20130703 |