CN103730242A - On-load voltage-regulating transformer voltage regulation structure provided with bias field winding - Google Patents
On-load voltage-regulating transformer voltage regulation structure provided with bias field winding Download PDFInfo
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- CN103730242A CN103730242A CN201310725035.7A CN201310725035A CN103730242A CN 103730242 A CN103730242 A CN 103730242A CN 201310725035 A CN201310725035 A CN 201310725035A CN 103730242 A CN103730242 A CN 103730242A
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Abstract
The invention relates to an on-load voltage-regulating transformer voltage regulation structure provided with a bias field winding and belongs to the technical field of transformer manufacturing. According to the technical scheme, a bias field winding PV is added in a transformer column apart from a voltage-regulating winding TV, and number of windings of the bias field winding PV is equivalent to number of generated rated step voltage Us; both the bias field winding PV and the voltage-regulating winding TV are of spiral structures and perform winding individually and respectively; the bias field winding PV is divided into a bias field winding PV1 and a bias field winding PV2 which are equivalent in number of windings, namely half of that of the bias field winding PV, and the bias field winding PV1 and the bias field winding PV2 serially form the bias field winding PV through a lead. Since the bias field winding is added in the transformer column, the technical problems that tapping points and tapping leads of the on-load voltage-regulating transformer are too many in constant flux having multiple voltage regulating grades are solved, and security and reliability of the transformer are improved.
Description
Technical field
The present invention relates to a kind of on-load tap-changing transformer pressure adjusting structure that inclined to one side excitation winding is set, belong to technical field of transformer manufacturing.
Background technology
In north America region electric power system, on-load tap-changing transformer requires there is range of regulation widely conventionally, and other special transformer often also requires multistage pressure regulation on a large scale.No matter the traditional voltage regulating mode adopting at present, be linear voltage regulation, positive-negative voltage-regulation or coarse and fine voltage regulation, all cannot avoid the pressure regulation tap and the tap lead quantity that because pressure regulation progression is numerous, cause too much, causes pressure regulation wire lead structure complicated.Especially when pressure regulation winding insulation level is higher, pressure regulation tap lead is arranged extremely difficult, and security reliability is poor, and cost is higher.
Summary of the invention
The object of the invention is to provide a kind of on-load tap-changing transformer pressure adjusting structure that inclined to one side excitation winding is set, by increasing inclined to one side excitation winding at transformer stem, the object that has realized constant flux voltage regulation transformer minimizing pressure regulation tap and tap lead, has improved transformer security reliability.The pressure adjusting structure of the inclined to one side excitation winding of this set is all applicable to voltage regulating modes such as linear voltage regulation, positive-negative voltage-regulation, coarse and fine voltage regulations, for solving more permanent magnetic flux on-load tap-changing transformer pressure regulation tap and the more problem of tap lead of pressure regulation progression.
Technical scheme of the present invention is:
An on-load tap-changing transformer pressure adjusting structure for inclined to one side excitation winding is set, and this pressure adjusting structure, except pressure regulation winding TV, has also increased inclined to one side excitation winding PV at transformer stem, and the excitation winding PV number of turn is the number of turn that is equivalent to produce rated step voltage Us partially; Excitation winding PV and pressure regulation winding TV all adopt sped structure partially, separately coiling separately; Each tap has good ampere-turn equilibrium when making inclined to one side excitation winding PV participate in pressure regulation, excitation winding PV is divided into inclined to one side excitation winding PV1 and inclined to one side excitation winding PV2 two parts partially, excitation winding PV1 and partially excitation winding PV2 equal turn numbers partially, be half of inclined to one side excitation winding PV, partially excitation winding PV1 and partially excitation winding PV2 by lead-in wire, be composed in series inclined to one side excitation winding PV; At transformer device structure cloth, be set up, excitation winding PV1 and inclined to one side excitation winding PV2 and pressure regulation winding TV are in same core limb partially, and three's width is identical to position, axially-aligned; Excitation winding PV1 is in upper axial end position partially, and pressure regulation winding TV is in axial centre position, and excitation winding PV2 is in lower axial end position partially.
Every grade of number of turn of described pressure regulation winding TV is the number of turn that is equivalent to produce twice step voltage 2Us.
Transformer Winding arrangement architecture is: core limb from inside to outside winding puts in order as low pressure winding L V, the basic winding HV of high pressure, inclined to one side excitation winding PV1 and inclined to one side excitation winding PV2 and pressure regulation winding TV, partially excitation winding PV1 and partially excitation winding PV2 and pressure regulation winding TV width in same position, axially-aligned; Excitation winding PV1 is in axial upper end position partially, and pressure regulation winding TV is in axial centre position, and excitation winding PV2 is in axial lower end position partially.
The feature of diverter switch and excitation winding wiring is partially: one end of excitation winding PV is connected to one side of diverter switch partially, the other end is connected on the corresponding tap selector in this one side of diverter switch and draws on contact, is about to one side of inclined to one side excitation winding PV series connection access diverter switch; Like this, even if tap selector is connected on a tap, but because go here and there into inclined to one side excitation winding PV on one side of diverter switch, but can obtain two output voltages, first voltage is relevant tap (directly) output voltage, second voltage is that relevant tap output voltage deducts inclined to one side magnet exciting coil voltage, thus the number of taps of pressure regulation winding only need common half.
Excitation winding PV is divided into inclined to one side excitation winding PV1 and inclined to one side excitation winding PV2 two parts partially, is connected in series, and adopts lead-in wire to be connected with a kilo-ohm level potential resistor at series connection contact, and then receive public output of diverter switch by lead-in wire.When diverter switch contact does not select minute termination process from selecting to be switched to, when diverter switch selector switch contact system could not be connected with diverter switch one side, excitation winding PV has floating potential partially; At this, suspend moment, the floating potential of excitation winding PV depends on that inclined to one side excitation winding PV is to the coupling capacitance of adjacent part partially.Therefore the mid portion of inclined to one side excitation winding PV to be received on a fixed potential by a kilo-ohm level potential resistor, be normally connected on public output of diverter switch.
The present invention be directed to along each tap voltage of pressure regulation winding and distribute and approach linearity, be i.e. a kind of Novel voltage-regulating structure of the permanent magnetic flux on-load tap-changing transformer invention of step voltage near constant in whole range of regulation.The present invention is except traditional pressure regulation winding, also at transformer stem, increased inclined to one side excitation winding, by with being used in conjunction with of on-load voltage regulating switch, can in the situation that pressure regulation progression is constant, make pressure regulation tap and tap lead quantity reduce and approach half, simplify pressure regulation wire lead structure.This on-load tap-changing transformer pressure adjusting structure is widely used in the more permanent magnetic flux on-load tap-changing transformer of pressure regulation progression.
The invention has the beneficial effects as follows: adopt a kind of brand-new on-load tap-changing transformer pressure adjusting structure, by increasing inclined to one side excitation winding at transformer stem, solve more permanent magnetic flux on-load transformer tap changer and the too much technical barrier of tap lead of pressure regulation progression, improved the security reliability of transformer.
Accompanying drawing explanation
Fig. 1 pressure regulation winding of the present invention and partially excitation winding structural plan;
Step 1 electrical schematic diagram in four of diverter switch pressure regulation consecutive steps during Fig. 2 positive-negative voltage-regulation of the present invention;
Step 2 electrical schematic diagram in four of diverter switch pressure regulation consecutive steps during Fig. 3 positive-negative voltage-regulation of the present invention;
Step 3 electrical schematic diagram in four of diverter switch pressure regulation consecutive steps during Fig. 4 positive-negative voltage-regulation of the present invention;
Step 4 electrical schematic diagram in four of diverter switch pressure regulation consecutive steps during Fig. 5 positive-negative voltage-regulation of the present invention;
In figure: 11 iron cores, 12 low pressure winding L V, the basic winding HV of 13 high pressure, 14 pressure regulation winding TV, 15 inclined to one side excitation winding PV1,16 inclined to one side excitation winding PV2,17 diverter switch transition resistance R1,18 diverter switch transition resistance R2,19 kilo-ohms of level potential resistors.
Embodiment
Below in conjunction with accompanying drawing, by example, the invention will be further described.
An on-load tap-changing transformer pressure adjusting structure for inclined to one side excitation winding is set, and this pressure adjusting structure, except pressure regulation winding TV, has also increased inclined to one side excitation winding PV at transformer stem, and the excitation winding PV number of turn is the number of turn that is equivalent to produce rated step voltage Us partially; Excitation winding PV and pressure regulation winding TV all adopt sped structure partially, separately coiling separately; Each tap has good ampere-turn equilibrium when making inclined to one side excitation winding PV participate in pressure regulation, excitation winding PV is divided into inclined to one side excitation winding PV1 and inclined to one side excitation winding PV2 two parts partially, excitation winding PV1 and partially excitation winding PV2 equal turn numbers partially, be half of inclined to one side excitation winding PV, partially excitation winding PV1 and partially excitation winding PV2 by lead-in wire, be composed in series inclined to one side excitation winding PV; At transformer device structure cloth, be set up, excitation winding PV1 and inclined to one side excitation winding PV2 and pressure regulation winding TV are in same core limb partially, and three's width is identical to position, axially-aligned; Excitation winding PV1 is in upper axial end position partially, and pressure regulation winding TV is in axial centre position, and excitation winding PV2 is in lower axial end position partially.
Every grade of number of turn of described pressure regulation winding TV is the number of turn that is equivalent to produce twice step voltage 2Us.
Transformer Winding arrangement architecture is: core limb from inside to outside winding puts in order as low pressure winding L V, the basic winding HV of high pressure, inclined to one side excitation winding PV1 and inclined to one side excitation winding PV2 and pressure regulation winding TV, partially excitation winding PV1 and partially excitation winding PV2 and pressure regulation winding TV width in same position, axially-aligned; Excitation winding PV1 is in axial upper end position partially, and pressure regulation winding TV is in axial centre position, and excitation winding PV2 is in axial lower end position partially.
In embodiment, iron core can be selected single-phase or three-phase structure according to transformer parameter.
Excitation winding PV1 and inclined to one side excitation winding PV2 connect by outside lead partially, at this series connection contact, separately adopt lead-in wire to be connected with a kilo-ohm level potential resistor, and kilo-ohm level potential resistor is received public output of diverter switch again.One end of excitation winding PV is connected to one side of diverter switch partially, and the other end is connected on the corresponding tap selector in this one side of diverter switch and draws on contact, is about to one side of inclined to one side excitation winding PV series connection access diverter switch.
Accompanying drawing 2-5, four of shunting switch pressure regulation consecutive steps while being positive-negative voltage-regulation.Step 1 is tap one voltage, and step 2 is that tap two voltages deduct inclined to one side excitation winding PV voltage, and step 3 is tap three voltages, and step 4 is that tap four voltages deduct inclined to one side excitation winding PV voltage, can export two kinds of voltages like this in each tap of pressure regulation winding.
Claims (5)
1. the on-load tap-changing transformer pressure adjusting structure that inclined to one side excitation winding is set, it is characterized in that: this pressure adjusting structure is except pressure regulation winding TV, also at transformer stem, increased inclined to one side excitation winding PV, the excitation winding PV number of turn is the number of turn that is equivalent to produce rated step voltage Us partially; Excitation winding PV and pressure regulation winding TV all adopt sped structure partially, separately coiling separately; Excitation winding PV is divided into inclined to one side excitation winding PV1 and inclined to one side excitation winding PV2 two parts partially, excitation winding PV1 and partially excitation winding PV2 equal turn numbers partially, be half of inclined to one side excitation winding PV, partially excitation winding PV1 and partially excitation winding PV2 by lead-in wire, be composed in series inclined to one side excitation winding PV; At transformer device structure cloth, be set up, excitation winding PV1 and inclined to one side excitation winding PV2 and pressure regulation winding TV are in same core limb partially, and three's width is identical to position, axially-aligned; Excitation winding PV1 is in upper axial end position partially, and pressure regulation winding TV is in axial centre position, and excitation winding PV2 is in lower axial end position partially.
2. a kind of on-load tap-changing transformer pressure adjusting structure that inclined to one side excitation winding is set according to claim 1, is characterized in that: every grade of number of turn of described pressure regulation winding TV is the number of turn that is equivalent to produce twice step voltage 2Us.
3. a kind of on-load tap-changing transformer pressure adjusting structure that inclined to one side excitation winding is set according to claim 1 and 2, it is characterized in that: Transformer Winding arrangement architecture is: core limb from inside to outside winding puts in order as low pressure winding L V, the basic winding HV of high pressure, inclined to one side excitation winding PV1 and inclined to one side excitation winding PV2 and pressure regulation winding TV, partially excitation winding PV1 and partially excitation winding PV2 and pressure regulation winding TV width in same position, axially-aligned; Excitation winding PV1 is in axial upper end position partially, and pressure regulation winding TV is in axial centre position, and excitation winding PV2 is in axial lower end position partially.
4. a kind of on-load tap-changing transformer pressure adjusting structure that inclined to one side excitation winding is set according to claim 1 and 2, it is characterized in that: one end of excitation winding PV is connected to one side of diverter switch partially, the other end is connected on the corresponding tap selector in this one side of diverter switch and draws on contact, is about to one side of inclined to one side excitation winding PV series connection access diverter switch.
5. a kind of on-load tap-changing transformer pressure adjusting structure that inclined to one side excitation winding is set according to claim 1 and 2, it is characterized in that: excitation winding PV is divided into inclined to one side excitation winding PV1 and inclined to one side excitation winding PV2 two parts partially, by lead-in wire, be connected in series, and adopt lead-in wire to be connected with a kilo-ohm level potential resistor at series connection contact, and then receive public output of diverter switch.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310725035.7A CN103730242A (en) | 2013-12-25 | 2013-12-25 | On-load voltage-regulating transformer voltage regulation structure provided with bias field winding |
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| CN201310725035.7A CN103730242A (en) | 2013-12-25 | 2013-12-25 | On-load voltage-regulating transformer voltage regulation structure provided with bias field winding |
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| CN103730242A true CN103730242A (en) | 2014-04-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409203A (en) * | 2014-12-03 | 2015-03-11 | 中徽机电科技股份有限公司 | Intelligent adjusting device and method for power grid |
| CN113611513A (en) * | 2021-07-23 | 2021-11-05 | 保定天威保变电气股份有限公司 | Phase modulation transformer with large phase shift angle |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1942567B2 (en) * | 1969-08-21 | 1971-12-16 | Schorch GmbH, 4070 Rheydt, Maschi nenfabnk Reinhausen Gebruder Scheubeck KG, 8400 Regensburg | THREE-PHASE TRANSFORMER WITH STAR-CONNECTED TRANSFORMER WINDINGS CONSTRUCTED FROM TRUNK AND STEP WINDING |
| CN1971778A (en) * | 2006-08-23 | 2007-05-30 | 特变电工沈阳变压器集团有限公司技术中心 | Single-phase self-coupling on-load voltage-regulating transformer |
| CN201044202Y (en) * | 2006-08-23 | 2008-04-02 | 特变电工沈阳变压器集团有限公司技术中心 | Load-ratio voltage transformer with bias winding |
| CN201315232Y (en) * | 2008-12-15 | 2009-09-23 | 锦州变压器股份有限公司 | Body structure of three-winding on-load voltage regulating step-down transformer |
| CN102446622A (en) * | 2011-12-12 | 2012-05-09 | 保定天威集团有限公司 | Loaded voltage-regulating electric transformer |
| CN102667975A (en) * | 2009-12-23 | 2012-09-12 | 赖茵豪森机械制造公司 | Step switch comprising a polarity switch for a variable transformer |
-
2013
- 2013-12-25 CN CN201310725035.7A patent/CN103730242A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1942567B2 (en) * | 1969-08-21 | 1971-12-16 | Schorch GmbH, 4070 Rheydt, Maschi nenfabnk Reinhausen Gebruder Scheubeck KG, 8400 Regensburg | THREE-PHASE TRANSFORMER WITH STAR-CONNECTED TRANSFORMER WINDINGS CONSTRUCTED FROM TRUNK AND STEP WINDING |
| CN1971778A (en) * | 2006-08-23 | 2007-05-30 | 特变电工沈阳变压器集团有限公司技术中心 | Single-phase self-coupling on-load voltage-regulating transformer |
| CN201044202Y (en) * | 2006-08-23 | 2008-04-02 | 特变电工沈阳变压器集团有限公司技术中心 | Load-ratio voltage transformer with bias winding |
| CN201315232Y (en) * | 2008-12-15 | 2009-09-23 | 锦州变压器股份有限公司 | Body structure of three-winding on-load voltage regulating step-down transformer |
| CN102667975A (en) * | 2009-12-23 | 2012-09-12 | 赖茵豪森机械制造公司 | Step switch comprising a polarity switch for a variable transformer |
| CN102446622A (en) * | 2011-12-12 | 2012-05-09 | 保定天威集团有限公司 | Loaded voltage-regulating electric transformer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104409203A (en) * | 2014-12-03 | 2015-03-11 | 中徽机电科技股份有限公司 | Intelligent adjusting device and method for power grid |
| CN113611513A (en) * | 2021-07-23 | 2021-11-05 | 保定天威保变电气股份有限公司 | Phase modulation transformer with large phase shift angle |
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Application publication date: 20140416 |