CN103956256A - Layout structure of transformer windings - Google Patents
Layout structure of transformer windings Download PDFInfo
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- CN103956256A CN103956256A CN201410178857.2A CN201410178857A CN103956256A CN 103956256 A CN103956256 A CN 103956256A CN 201410178857 A CN201410178857 A CN 201410178857A CN 103956256 A CN103956256 A CN 103956256A
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Abstract
The invention particularly relates to a layout structure of transformer windings. The transformer windings are arranged at opposite positions in a device body. The layout structure of the transformer windings comprises an iron core, wherein voltage regulating windings, an inner winding, an outer winding and an oil tank are sequentially arranged outside the iron core from inside to outside; a relative height difference value delta H between the inner and outer windings of a transformer is less than or equal to a value formed by subtracting HM2 from HM1 and is more than 0; the reactance height of the inner winding is greater than that of the outer winding. A transformer winding relative height designing method which is disclosed by the invention and is capable of balancing winding temperature rise and short-circuiting mechanical force is one of the effective measures for optimizing the winding structure design, saving the cost, improving the reliability and the safety of a product and guaranteeing the life cycle of the product. The layout structure of the transformer windings is applicable to the winding structure design of alternating current power transformers and converter transformers of 35 kV or above.
Description
(1) technical field
The present invention relates to a pair of Transformer Winding arrangement, particularly the highly low Transformer Winding arrangement of highly high, the outer winding reactance of a kind of interior winding reactance.
(2) background technology
Present stage, along with the development of high pressure, superhigh pressure, large volume AC DC transmission system, power consumer is had higher requirement reliability and the useful life to transformer; Need carry out quantitative analysis to transformer eddy current loss and short-circuit electromotive force, realize the equilibrium of temperature rise of hot spot and short-circuit electromotive force on every winding, be the basis of Optimum Design of Transformers, reliable in quality.
In the past, be usually based on empirical equation to the calculating of its eddy current loss and short-circuit electromotive force when design of transformer.As everyone knows, this empirical equation is to derive under hypothesis based on certain and equivalence; The more important thing is that it has ignored the boundary condition impacts logical on Transformer Winding brow leakage such as transformer core principal post, other post, arm-tie, folder web, folder limb plate, limb plate magnetic shunt, drawstring, iron yoke, casing.The instrument that lacks the checking of coiling hotspot temperature rise and short-circuit electromotive force Computer Aided Design simultaneously or measure, only have the whole winding temperature rise of transformer high, burn out, just know that transformer winding structure design is reasonable not after unstability, mechanical deformation; Now form the general layout of " mending the fold after the sheep is lost, late ".Bring tremendous influence at aspects such as manufacture, delivery, economy, the marketings to transformer production producer.
(3) summary of the invention
The present invention is in order to make up the deficiencies in the prior art, the Transformer Winding arrangement of the balanced winding temperature rise of a kind of energy, short circuit mechanical force is provided, this Transformer Winding arrangement has adopted the highly mentality of designing such as or not winding reactance, be optimize winding construction design, cost-saving, improve product reliability and fail safe and ensure one of effective measures of product life cycle.
The present invention is achieved through the following technical solutions:
A kind of Transformer Winding arrangement, comprise iron core, outside unshakable in one's determination, set gradually from the inside to the outside pressure regulation winding, interior winding, outer winding, fuel tank, its special character is: the relative altitude difference △ H of the inside and outside winding of this transformer meets: 0< △ H≤
-
, its winding reactance height difference computing formula:
Wherein, in formula:
---main empty path size ， ㎜;
---the radial width ， of interior winding ㎜;
---the radial width ， of outer winding ㎜;
---main empty path mean radius ， ㎜;
---interior winding reactance height, ㎜;
---outer winding reactance height, ㎜;
---circumscribed circle diameter ， ㎜ unshakable in one's determination.
Transformer Winding arrangement of the present invention, two ends up and down unshakable in one's determination arrange respectively folder web, below upper clamping piece web, be welded with upper limbs plate, device body positioner is set above, and the lower surface place of upper limbs plate is provided with magnetic shunt, is welded with lower limb plate above lower clamping piece web, oil guiding box is installed below, the upper surface place of this lower limb plate arranges magnetic shunt, between upper limbs plate, lower limb plate and folder web, is equipped with reinforcement iron, and pressure regulation winding, interior winding, outer winding are all between two magnetic shunts.The design's transformer core principal post, other post, iron yoke, arm-tie, folder web, folder limb plate, limb plate magnetic shunt, drawstring, casing etc. have formed the boundary condition of leakage flux, the material behavior of these group parts with and the leakage flux magnetic circuit that formed etc., be the principal element that determines the logical regularity of distribution of Transformer Winding brow leakage; Based on above-mentioned influencing factor, if inside and outside winding reactance is highly equal, the horizontal leakage flux of interior winding overhang the radius of curvature large and magnetic line of force is less, the horizontal leakage flux of outer winding overhang the radius of curvature less and magnetic line of force is larger, so make the eddy current loss of interior winding overhang and short-circuit electromotive force large compared with outer winding.In order to solve this technical barrier, the relative reactance high computational of the winding empirical equation of utilizing company to sum up has for many years been carried out detailed calculating; Utilize MagNet business magnetic field analysis software simultaneously, set up three-dimensional leakage magnetic field model, the brow leakage regularity of distribution has been carried out to simulating, verifying analysis.Determined the highly low design of highly high, the outer winding reactance of interior winding reactance, simultaneously in conjunction with winding conducting wire wire gauge size, paper bag thickness, in length and breadth to the number of turn of oil duct size and every cake wire etc.; Reasonably determined inside and outside winding reactance height difference △ H(△ H general control 0< △ H≤(
-
) between).
Determine a method for the height difference of inside and outside winding according to above-mentioned Transformer Winding arrangement, its special character is: comprise the following steps:
(1) first according to the concrete technical parameter of product, the average reactance height of a pair of inside and outside winding of Preliminary design transformer;
(2) utilize winding reactance height difference computing formula, calculate the reactance height of inside and outside winding;
(3) utilize MagNet business magnetic field analysis software, set up stray field three-dimensional simulation model, the brow leakage regularity of distribution has been carried out to simulation analysis;
(4) in conjunction with winding conducting wire wire gauge size, paper bag thickness, in length and breadth to the number of turn of oil duct size and every cake wire; Device body Oil flow distribution situation and winding temperature rise result of calculation; Short-circuit electromotive force result of calculation; Winding thermal stability result of calculation; Interior winding unstability check results; Finally determined the height difference △ H of inside and outside winding, △ H be controlled at 0< △ H≤(
-
) between.
The design relates to the design of a pair of Transformer Winding relative altitude, particularly the highly low machine body structure of highly high, the outer winding reactance of a kind of interior winding reactance; The radial leakage flux of winding that the uneven ampere-turn of winding overhang that utilizes the difference of winding height to determine produces, suppress, due to the impact of Magnetic Leakage Field of Transformer boundary condition on the radial leakage field of winding overhang, finally to have realized the equilibrium that produces eddy current loss, short-circuit electromotive force on each winding; The further optimal design of transformer is had to important reference value.
The invention has the beneficial effects as follows: the invention provides the Transformer Winding relative altitude method for designing of the balanced winding temperature rise of a kind of energy, short circuit mechanical force, be optimize winding construction design, cost-saving, improve product reliability and fail safe and ensure one of effective measures of product life cycle.Be useful in the application in 35kV and above AC power transformer and the design of converter transformer winding construction.
(4) brief description of the drawings
Below in conjunction with accompanying drawing, the present invention is further illustrated.
Accompanying drawing 1 is traditional transformer winding relative altitude design drawing;
Accompanying drawing 2 is the design's Transformer Winding relative altitude design drawing;
In figure: 1 iron core, 2 interior windings, 3 outer windings, 4 pressure regulation windings, 5 fuel tanks, 6 folder webs, 7 upper limbs plates, 8 lower limb plates, 9 magnetic shunts, 10 strengthen iron, 11 oil guiding box, 12 device body positioners.
(5) embodiment
Accompanying drawing is a kind of specific embodiment of the present invention.This embodiment comprises iron core 1, interior winding 2, outer winding 3, pressure regulation winding 4 and fuel tank 5.Unshakable in one's determination 1 outer pressure regulation winding 4, interior winding 2, outer winding 3, the fuel tank 5 of setting gradually from the inside to the outside, the relative altitude difference △ H of the inside and outside winding 2,3 of this transformer meets: 0< △ H≤
-
, its winding reactance height difference computing formula:
Wherein, in formula:
---main empty path size ， ㎜;
---the radial width ， of interior winding ㎜;
---the radial width ， of outer winding ㎜;
---main empty path mean radius ， ㎜;
---interior winding reactance height, ㎜;
---outer winding reactance height, ㎜;
---circumscribed circle diameter ， ㎜ unshakable in one's determination.
Transformer Winding arrangement of the present invention, unshakable in one's determination 1 two ends up and down arrange respectively folder web 6, below upper clamping piece web 6, be welded with upper limbs plate 7, device body positioner 12 is set above, the lower surface place of upper limbs plate 7 is provided with magnetic shunt 9, above lower clamping piece web 6, be welded with lower limb plate 8, oil guiding box 11 is installed below, the upper surface place of this lower limb plate 8 arranges magnetic shunt 9, between upper limbs plate 7, lower limb plate 8 and folder web 6, be equipped with and strengthen iron 10, pressure regulation winding 4, interior winding 2, outer winding 3 are all between two magnetic shunts 9.In traditional transformer winding, interior winding 2, outer winding 3, pressure regulation winding 4 are highly identical.
The design's transformer core 1 principal post, other post, iron yoke, arm-tie, folder web 6, folder limb plate, limb plate magnetic shunt, drawstring, casing etc. have formed the boundary condition of leakage flux, the material behavior of these group parts with and the leakage flux magnetic circuit that formed etc., be the principal element that determines the logical regularity of distribution of Transformer Winding brow leakage; Based on above-mentioned influencing factor, if inside and outside winding 2,3 reactance are highly equal, interior winding 2 end cross leakage fluxs the radius of curvature large and magnetic line of force is less, outer winding 3 end cross leakage fluxs the radius of curvature less and magnetic line of force is larger, and then makes eddy current loss and the short-circuit electromotive force of interior winding 2 ends large compared with outer winding.In order to solve this technical barrier, the relative reactance high computational of the winding empirical equation of utilizing company to sum up has for many years been carried out detailed calculating; Utilize MagNet business magnetic field analysis software simultaneously, set up three-dimensional leakage magnetic field model, the brow leakage regularity of distribution has been carried out to simulating, verifying analysis.Finally determine the height difference △ H of inside and outside winding 2,3: its thinking is that, first according to the concrete technical parameter of product, the average reactance of a pair of winding of Preliminary design transformer highly.Next utilizes company's winding reactance height difference empirical formula 1, calculates the reactance height of inside and outside winding.Then utilize MagNet business magnetic field analysis software, set up stray field three-dimensional simulation model, the brow leakage regularity of distribution is carried out to simulation analysis.Finally in conjunction with winding conducting wire wire gauge size, paper bag thickness, in length and breadth to the number of turn of oil duct size and every cake wire; Device body Oil flow distribution situation and winding temperature rise result of calculation; Short-circuit electromotive force result of calculation; Winding thermal stability result of calculation; Interior winding unstability check results; The final height difference △ H(△ H general control of determining inside and outside winding 0< △ H≤(
-
) between).
The design is a pair of Transformer Winding relative altitude design, its beneficial effect is, the Transformer Winding relative altitude method for designing of the balanced winding temperature rise of a kind of energy, short circuit mechanical force etc. is provided, be optimize the design of winding arrangement, cost-saving, improve product reliability and fail safe and ensure one of effective measures of product life cycle.Be useful in the application in 35kV and above AC power transformer and the design of converter transformer winding arrangement.
Claims (3)
1. a Transformer Winding arrangement, comprise iron core, outside unshakable in one's determination, set gradually from the inside to the outside pressure regulation winding, interior winding, outer winding, fuel tank, it is characterized in that: the relative altitude difference △ H of the inside and outside winding of this transformer meets: 0< △ H≤
-
, its winding reactance height difference computing formula:
Wherein, in formula:
---main empty path size ， ㎜;
---the radial width ， of interior winding ㎜;
---the radial width ， of outer winding ㎜;
---main empty path mean radius ， ㎜;
---interior winding reactance height, ㎜;
---outer winding reactance height, ㎜;
---circumscribed circle diameter ， ㎜ unshakable in one's determination.
2. Transformer Winding arrangement according to claim 1, it is characterized in that: two ends up and down unshakable in one's determination arrange respectively folder web, below upper clamping piece web, be welded with upper limbs plate, device body positioner is set above, the lower surface place of upper limbs plate is provided with magnetic shunt, above lower clamping piece web, be welded with lower limb plate, oil guiding box is installed below, the upper surface place of this lower limb plate arranges magnetic shunt, between upper limbs plate, lower limb plate and folder web, be equipped with reinforcement iron, pressure regulation winding, interior winding, outer winding are all between two magnetic shunts.
3. a Transformer Winding arrangement according to claim 1, determine and it is characterized in that the method for the height difference of inside and outside winding: comprise the following steps:
(1) first according to the concrete technical parameter of product, the average reactance height of a pair of inside and outside winding of Preliminary design transformer;
(2) utilize winding reactance height difference computing formula, calculate the reactance height of inside and outside winding;
(3) utilize MagNet business magnetic field analysis software, set up stray field three-dimensional simulation model, the brow leakage regularity of distribution has been carried out to simulation analysis;
(4) in conjunction with winding conducting wire wire gauge size, paper bag thickness, in length and breadth to the number of turn of oil duct size and every cake wire; Device body Oil flow distribution situation and winding temperature rise result of calculation; Short-circuit electromotive force result of calculation; Winding thermal stability result of calculation; Interior winding unstability check results; Finally determined the height difference △ H of inside and outside winding, △ H be controlled at 0< △ H≤(
-
) between.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410178857.2A CN103956256B (en) | 2014-04-30 | 2014-04-30 | A kind of Transformer Winding arrangement |
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|---|---|---|---|
| CN201410178857.2A CN103956256B (en) | 2014-04-30 | 2014-04-30 | A kind of Transformer Winding arrangement |
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| CN103956256B CN103956256B (en) | 2016-09-28 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109074950A (en) * | 2016-04-25 | 2018-12-21 | 西门子股份公司 | With the high voltage electric equipment adjusted around group |
| CN112560335A (en) * | 2020-12-02 | 2021-03-26 | 西南交通大学 | Multi-objective and structural parameter comprehensive optimization design method for transformer |
Citations (6)
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|---|---|---|---|---|
| JPH08107025A (en) * | 1994-08-11 | 1996-04-23 | Meidensha Corp | Tubular winding of transformer and its manufacture |
| CN201556516U (en) * | 2009-11-20 | 2010-08-18 | 广西柳州特种变压器有限责任公司 | High and low voltage coil structure of high voltage transformer |
| CN201976061U (en) * | 2011-02-23 | 2011-09-14 | 中国西电电气股份有限公司 | Voltage regulating structure of converter transformer |
| CN202183298U (en) * | 2011-08-24 | 2012-04-04 | 中国西电电气股份有限公司 | Winding structure for power transformer |
| CN202816595U (en) * | 2012-07-24 | 2013-03-20 | 江苏天翔变压器有限公司 | High-insulation transformer |
| CN203338958U (en) * | 2013-07-14 | 2013-12-11 | 陈小磊 | Adjustable variable transformer |
-
2014
- 2014-04-30 CN CN201410178857.2A patent/CN103956256B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08107025A (en) * | 1994-08-11 | 1996-04-23 | Meidensha Corp | Tubular winding of transformer and its manufacture |
| CN201556516U (en) * | 2009-11-20 | 2010-08-18 | 广西柳州特种变压器有限责任公司 | High and low voltage coil structure of high voltage transformer |
| CN201976061U (en) * | 2011-02-23 | 2011-09-14 | 中国西电电气股份有限公司 | Voltage regulating structure of converter transformer |
| CN202183298U (en) * | 2011-08-24 | 2012-04-04 | 中国西电电气股份有限公司 | Winding structure for power transformer |
| CN202816595U (en) * | 2012-07-24 | 2013-03-20 | 江苏天翔变压器有限公司 | High-insulation transformer |
| CN203338958U (en) * | 2013-07-14 | 2013-12-11 | 陈小磊 | Adjustable variable transformer |
Non-Patent Citations (1)
| Title |
|---|
| 李英等: "大型变压器绕组结构对漏磁场及短路电动力的影响", 《变压器》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109074950A (en) * | 2016-04-25 | 2018-12-21 | 西门子股份公司 | With the high voltage electric equipment adjusted around group |
| CN109074950B (en) * | 2016-04-25 | 2021-10-15 | 西门子股份公司 | High-voltage electrical device with regulating winding group |
| CN112560335A (en) * | 2020-12-02 | 2021-03-26 | 西南交通大学 | Multi-objective and structural parameter comprehensive optimization design method for transformer |
| CN112560335B (en) * | 2020-12-02 | 2022-11-22 | 西南交通大学 | Multi-objective and structural parameter comprehensive optimization design method for transformer |
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| CN103956256B (en) | 2016-09-28 |
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