CN103928225B - A kind of method transforming 220kV off circuit tap changing transfor mer device body as ULTC device body - Google Patents
A kind of method transforming 220kV off circuit tap changing transfor mer device body as ULTC device body Download PDFInfo
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- CN103928225B CN103928225B CN201410167300.9A CN201410167300A CN103928225B CN 103928225 B CN103928225 B CN 103928225B CN 201410167300 A CN201410167300 A CN 201410167300A CN 103928225 B CN103928225 B CN 103928225B
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- 238000000034 method Methods 0.000 title claims abstract description 13
- 230000001131 transforming effect Effects 0.000 title claims abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 81
- 238000004804 winding Methods 0.000 claims abstract description 53
- 230000008901 benefit Effects 0.000 abstract description 6
- 239000000463 material Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N ferric oxide Chemical compound O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
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Abstract
The present invention relates to a kind of method transforming 220kV off circuit tap changing transfor mer device body as ULTC device body, comprise the following steps: 1. the spacing between two, left and right return yoke unshakable in one's determination, A phase iron core column, B phase iron core column and C phase iron core column is strengthened；2. on A phase iron core column, B phase iron core column, C phase iron core column, rewind low pressure winding, outside low pressure winding, be wrapped with high pressure winding, outside high pressure winding, be wound around tap-changing windings.3. the upper yoke matched with A phase iron core column, B phase iron core column and C phase iron core column is changed；4. tap-changing windings is made tap, by on-load tap changer, by different directions, the tap-changing windings tap of the different number of turn and high pressure windings in series.The present invention is to improve on the basis of existing transformer body, it is to avoid new transformator of purchasing on a barter basis.The adjustment of no-load voltage ratio can be carried out whenever and wherever possible, it is no longer necessary to have a power failure, use manpower and material resources sparingly, increase selling benefit.
Description
Technical field
The present invention relates to a kind of transformer body remodeling method, especially relate to a kind of method transforming 220kV off circuit tap changing transfor mer device body as ULTC device body.
Background technology
Owing to power consumer is more and more higher to the requirement of the quality of power supply, the equipment causing Utilities Electric Co. to transmit electric power also rises year by year, to guarantee to provide the user safe, energy-conservation, the electric power energy of high-quality.Wherein, quality of voltage is exactly the important symbol of high-quality electric energy.The quality of voltage of circuit conveying, is mainly determined by the voltage of substation bus bar, and the voltage of bus, then it is to be determined by the no-load voltage ratio of main transformer of transformer substation.Due to off circuit tap changing transfor mer can not charged adjustment no-load voltage ratio, therefore transformator is the most charged, and the height of busbar voltage cannot be adjusted.If busbar voltage exceeds acceptability limit, then needing has a power failure transformator is adjusted no-load voltage ratio, can again put into operation after being then passed through the tests such as D.C. resistance.Visible, off circuit tap changing transfor mer is only applicable to duty ratio relatively stability region.If load round the clock, seasonal variety bigger, so off circuit tap changing transfor mer will be unable to meet the demand frequently adjusting no-load voltage ratio, ULTC then highlights special advantage, and it can carry out the adjustment of no-load voltage ratio whenever and wherever possible, has met the requirement of load side busbar voltage quality.At present, known 220kV off circuit tap changing transfor mer device body structure is to be made up of three-phase and five-pole iron core, low pressure winding, high pressure winding.Being respectively wound around by three-phase low-voltage winding on three stems that three-phase and five-pole is unshakable in one's determination, three-phase high-voltage winding is respectively wound around low pressure winding outer layer, non-excitation pressure adjustment switch leads is connected with three-phase high voltage coil respectively.But, this kind of transformator once puts into operation, and tap cannot adjust, and no-load voltage ratio is fixing, output voltage stabilization, as needed to adjust, it is necessary to have a power failure and carry out.Owing to power grid user is on the increase, load prediction difficulty is big, it is impossible to predicting the stable case of transformer output voltage in advance, therefore transformator needs to carry out whenever and wherever possible the adjustment of no-load voltage ratio, to adapt to the requirement of load side quality of voltage.
Summary of the invention
In order to overcome existing 220kV off circuit tap changing transfor mer can not carry out the deficiency of voltage ratio control whenever and wherever possible, the present invention provides a kind of method transforming 220kV off circuit tap changing transfor mer device body as ULTC device body, the method does not change transformator profile, can carry out the adjustment of no-load voltage ratio whenever and wherever possible.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of method transforming 220kV off circuit tap changing transfor mer device body as ULTC device body, it is unshakable in one's determination that described 220kV off circuit tap changing transfor mer device body has three-phase and five-pole, described three-phase and five-pole iron core is made up of two, left and right return yoke unshakable in one's determination, upper yoke, A phase iron core column, B phase iron core column and C phase iron core column, and the method comprises the following steps:
1. the spacing between two, left and right return yoke unshakable in one's determination, A phase iron core column, B phase iron core column and C phase iron core column is strengthened；
2. on A phase iron core column, B phase iron core column, C phase iron core column, rewind low pressure winding 5, outside low pressure winding, be wrapped with high pressure winding, outside high pressure winding, be wound around tap-changing windings；
3. the upper yoke matched with A phase iron core column, B phase iron core column and C phase iron core column is changed；
4. tap-changing windings is made tap, by on-load tap changer, by different directions, the tap-changing windings tap of the different number of turn and high pressure windings in series.
Advantage for present invention with provide the benefit that: transformer body of the present invention is to improve on the basis of existing transformer body, after improvement rated voltage ratio from 220 ± 2 × 2.5%/66 become 230 ± 8 × 1.25%/69 adapted to system voltage change requirements. avoid new transformator of purchasing on a barter basis.The adjustment of no-load voltage ratio can be carried out whenever and wherever possible, it is no longer necessary to have a power failure, use manpower and material resources sparingly, increase selling benefit, improve power supply reliability, there is good economic benefit.
Accompanying drawing explanation
Fig. 1 is 220kV off circuit tap changing transfor mer machine body structure schematic diagram；
Fig. 2 is the ULTC machine body structure schematic diagram utilizing this method to transform.
In figure, 1. three-phase and five-poles are unshakable in one's determination, 2. return yoke unshakable in one's determination, 3. upper yoke, 4. high pressure winding, 5. low pressure winding, 6.A phase iron core column, 7. B phase iron core column, 8. C phase iron core column, 9. window unshakable in one's determination, 10. tap-changing windings.
Detailed description of the invention
The invention will be further described below in conjunction with the accompanying drawings:
As shown in Figure 1,220kV off circuit tap changing transfor mer machine body structure is as follows: have the three-phase and five-pole iron core 1 being made up of two, left and right return yoke 2 unshakable in one's determination, upper yoke 3, A phase iron core column 6, B phase iron core column 7 and C phase iron core column 8, left and right forms four windows 9 unshakable in one's determination between two return yokes 2 unshakable in one's determination, upper yoke 3, A phase iron core column 6, B phase iron core column 7, C phase iron core columns 8, low pressure winding 5 is respectively wound around on A phase iron core column 6, B phase iron core column 7, C phase iron core column 8, and low pressure winding 5 is wrapped in the outer layer of high pressure winding 4.
A kind of method that 220kV off circuit tap changing transfor mer device body transform as ULTC device body of the present invention comprises the following steps:
1. two, left and right return yoke 2 unshakable in one's determination unshakable in one's determination for three-phase and five-pole, A phase iron core column 6, B phase iron core column 7 and C phase iron core column 8 are respectively reamed a part, cut and can meet A phase iron core column 6, B phase iron core column 7 and C phase iron core column 8 in high-tension coil outer felt around tap-changing windings to remaining part, make left and right spacing between two return yokes 2 unshakable in one's determination, A phase iron core column 6, B phase iron core column 7 and C phase iron core columns 8 strengthen.
2. on A phase iron core column 6, B phase iron core column 7, C phase iron core column 8, rewind low pressure winding 5, outside low pressure winding, be wrapped with high pressure winding 4, outside high pressure winding, be wound around tap-changing windings 10.
3. the upper yoke matched with A phase iron core column 6, B phase iron core column 7 and C phase iron core column 8 is changed.
4. tap-changing windings 10 is made tap, umber of turn between different taps is different, pass through on-load tap changer, tap-changing windings 10 tap of different directions, the different number of turn is connected with high pressure winding 4, the adjustment of transformer voltage ratio can be realized, meet the requirement that transformer output voltage adjusts whenever and wherever possible.
As shown in Figure 2, improved ULTC machine body structure is as follows: two, left and right return yoke 2 unshakable in one's determination, upper yoke 3, A phase iron core column 6, B phase iron core column 7, C phase iron core column 8 has collectively constituted three-phase and five-pole iron core 1, two return yokes 2 unshakable in one's determination in left and right, upper yoke 3, A phase iron core column 6, B phase iron core column 7, four windows 9 unshakable in one's determination are formed between C phase iron core column 8, low pressure winding 5 is respectively wound around A phase iron core column 6, B phase iron core column 7, on C phase iron core column 8, high pressure winding 4 is wrapped in the outside of low pressure winding 5, tap-changing windings 10 is wrapped in outside high pressure winding 4, the distribution of low pressure winding 5-high pressure winding 4-tap-changing windings 10 is formed from inside to outside on iron core column.
Claims (1)
1. the method transforming 220kV off circuit tap changing transfor mer device body as ULTC device body, it is unshakable in one's determination that described 220kV off circuit tap changing transfor mer device body has three-phase and five-pole, described three-phase and five-pole iron core is made up of two, left and right return yoke unshakable in one's determination, upper yoke, A phase iron core column, B phase iron core column and C phase iron core column, it is characterised in that the method comprises the following steps:
1. two, left and right return yoke 2 unshakable in one's determination unshakable in one's determination for three-phase and five-pole, A phase iron core column 6, B phase iron core column 7 and C phase iron core column 8 are respectively reamed a part, cut and can meet A phase iron core column 6, B phase iron core column 7 and C phase iron core column 8 in high-tension coil outer felt around tap-changing windings to remaining part, make left and right spacing between two return yokes 2 unshakable in one's determination, A phase iron core column 6, B phase iron core column 7 and C phase iron core columns 8 strengthen；
2. on A phase iron core column, B phase iron core column, C phase iron core column, rewind low pressure winding 5, outside low pressure winding, be wrapped with high pressure winding, outside high pressure winding, be wound around tap-changing windings；
3. the upper yoke matched with A phase iron core column, B phase iron core column and C phase iron core column is changed；
4. tap-changing windings is made tap, by on-load tap changer, by different directions, the tap-changing windings tap of the different number of turn and high pressure windings in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410167300.9A CN103928225B (en) | 2014-04-24 | 2014-04-24 | A kind of method transforming 220kV off circuit tap changing transfor mer device body as ULTC device body |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410167300.9A CN103928225B (en) | 2014-04-24 | 2014-04-24 | A kind of method transforming 220kV off circuit tap changing transfor mer device body as ULTC device body |
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| CN103928225A CN103928225A (en) | 2014-07-16 |
| CN103928225B true CN103928225B (en) | 2016-08-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110197759A (en) * | 2018-02-26 | 2019-09-03 | 西门子公司 | Transformer, three-phase transformer and its mode of connection |
| CN109327170B (en) * | 2018-06-20 | 2023-05-02 | 成都理工大学 | Cascade type multi-range voltage transformation equipment and control method |
| CN108922759B (en) * | 2018-06-25 | 2023-10-20 | 河南森源电气股份有限公司 | High-voltage automatic reactive compensation amorphous alloy distribution transformer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2052568U (en) * | 1989-06-22 | 1990-02-07 | 韩德武 | Variable transformer for load current |
| CN200953280Y (en) * | 2006-08-29 | 2007-09-26 | 山东达驰电气股份有限公司 | Distributing loaded voltage regulating electric transformer |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5629311A (en) * | 1979-08-20 | 1981-03-24 | Hitachi Ltd | On-load voltage regulating transformer |
| JPS5630714A (en) * | 1979-08-22 | 1981-03-27 | Hitachi Ltd | On-load voltage regulating transformer |
| JPS5762509A (en) * | 1980-10-03 | 1982-04-15 | Hitachi Ltd | Tap changing transformer at time of load |
| JPS5952819A (en) * | 1982-09-20 | 1984-03-27 | Toshiba Corp | On-load voltage regulator |
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2014
- 2014-04-24 CN CN201410167300.9A patent/CN103928225B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2052568U (en) * | 1989-06-22 | 1990-02-07 | 韩德武 | Variable transformer for load current |
| CN200953280Y (en) * | 2006-08-29 | 2007-09-26 | 山东达驰电气股份有限公司 | Distributing loaded voltage regulating electric transformer |
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