CN105280361A - High-voltage coil of dry-type transformer, winding method of the high-voltage coil and dry-type transformer thereof - Google Patents
High-voltage coil of dry-type transformer, winding method of the high-voltage coil and dry-type transformer thereof Download PDFInfo
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- CN105280361A CN105280361A CN201510792598.7A CN201510792598A CN105280361A CN 105280361 A CN105280361 A CN 105280361A CN 201510792598 A CN201510792598 A CN 201510792598A CN 105280361 A CN105280361 A CN 105280361A
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Abstract
The invention provides a high-voltage coil of a dry-type transformer, a winding method of the high-voltage coil and a dry-type transformer thereof. The coil has a multi-segment layered cable-stayed structure. The connecting position of the coil is prepared in an inside shunting tapping manner, wherein the dry-type transformer is provided with the high-voltage coil. Through the structure improvement, the dry-type transformer has advantages of reducing the strength of an electric field among the fields, realizing more uniform electric field distribution in the coil, improving product quality, changing leakage magnetic field distribution of the transformer coil, changing shortcircuit impedance of the transformer, furthermore reducing use amount of main material of the transformer coil, and reducing cost of the transformer.
Description
Technical field
The present invention relates to electric field, particularly a kind of dry transformer high-tension coil and winding method thereof and the dry-type transformer based on this high-tension coil.
Background technology
At home, 10 ~ 35KV level non-excitation pressure adjustment dry transformer high-tension coil generally adopts multistage layered structure, sees accompanying drawing 1.At present, the prices of raw and semifnished materials remain high, particularly copper material and silicon steel sheet price.According to the display of up-to-date material price, copper conductor maintains the silicon steel sheet price of 2 ~ 3 times substantially, so in dry-type transformer design, how reducing copper material consumption, is the key point reduced costs.Theoretical according to design of transformer, in product, copper consumption and silicon steel sheet consumption are inversely, therefore invent a kind of new structure under the prerequisite not changing profile, effectively reduce copper consumption, ensure that transformer performance becomes the primary study problem of structure of the present invention.
Summary of the invention
The object of the present invention is to provide a kind of product quality high, lower-cost dry transformer high-tension coil, high-tension coil winding method and dry-type transformer.
Object of the present invention is achieved through the following technical solutions: it comprises stem stem and the first coil and the second coil, and the first coil and the second coil winding are on stem stem; In first coil, inside and outside two sections of coils are divided into outward by the stage casing of stem stem, the conducting wire end of the first coil starts from stem stem stage casing, and wire is from the stage casing of stem stem to after the outer extreme direction coiling ground floor of stem stem, the more reverse coiling second layer, coiling odd-level so repeatedly, form inner segment coil, oblique pull wire is to the stem stem in the outside of inner segment coil afterwards, is wound around according to the winding method of inner segment coil, after winding terminates, lead to joint at the wire end of the first coil; Wherein, draw at the inner coil internal layer of the first coil and have position between some taps to group,
Second coil and the first coil symmetry, the coil tail end of the second coil leads to joint, and the inner coil internal layer of the second coil draws position between some tap head groups,
In second coil and the first coil, between each section of coil, the number of plies is identical.
The winding method of dry transformer high-tension coil, it comprises the following steps,
A. winding former or stem stem are placed on coil winding machine or iron core apparatus, on each winding former or stem stem around coil be divided into two groups, two groups of coils are respectively the first coil and the second coil; Wherein, often organize coil and be divided into again inside and outside two sections of coils;
B. with the conducting wire end of the first coil for starting point, carry out coiling to it, conducting wire end starts from stem stem stage casing, and wire is from the stage casing of stem stem to after the outer extreme direction coiling ground floor of stem stem, the reverse coiling second layer again, coiling odd-level, forms inner segment coil, in winding process so repeatedly, inner coil internal layer at the first coil is drawn some taps 8,7,6, and multiple tap is drawn out to position between group;
C. after step b coiling completes, oblique pull wire is on the stem stem in the outside of inner segment coil, carry out the coiling of outer section of coil, wire is from the stage casing of stem stem to after the outer extreme direction coiling ground floor of stem stem, the more oppositely coiling second layer, so repeatedly coiling, the coiling number of plies of its China and foreign countries' section coil is identical with inner segment coil, finally draw joint A from the first coil wire end, B, C;
D. coiling second coil, the second described coil winding step is identical with the first coil, and the second coil of completing of coiling and the first coil symmetrical, second coil is in winding process, inner coil internal layer at the second coil is drawn multiple tap 5,4,3, and multiple tap is drawn out to position between group; And draw joint X from the second winding wire tail end, Y, Z.
A kind of dry-type transformer, its coil adopts above-mentioned high-tension coil.
Compared to prior art, the invention has the advantages that: coil have employed multistage laminar slant-pull structure, tap position takes the mode of inner side shunting tap.Not only can reduce section field intensity, make coil inside Electric Field Distribution more even, improve the quality of product; And changing the Magnetic fluxleakage distribution of transformer coil, the short-circuit impedance of transformer is changed, and then reduces the coil main material use amount of transformer, and transformer cost is reduced.
Accompanying drawing explanation
Fig. 1 is conventional dry transformer device structure high-tension coil schematic diagram.
Fig. 2 is dry transformer high-tension coil new construction schematic diagram.
Fig. 3 is high-tension coil tapping schematic diagram.
Label declaration: 1 stem stem, 21 first coils, 22 first coils, 3,4,5 is the tap of the second coil, and 6,7,8 is the tap of the first coil.1. be wherein the outer section coil of the first coil, be 2. the first coil inner segment coil, be 3. the second coil inner segment coil, be 4. the outer section coil of the second coil.
Embodiment
Below in conjunction with Figure of description and embodiment, content of the present invention is described in detail:
As shown in figures 2-3: object of the present invention is achieved through the following technical solutions: it comprises stem stem 1 and the first coil 21 and the second coil 22, it is characterized in that: the first coil and the second coil winding are on stem stem; In first coil, be divided into inside and outside two sections of coils outward by the stage casing of stem stem, the conducting wire end of the first coil starts from stem stem stage casing, wire is from the stage casing of stem stem to after the outer extreme direction coiling ground floor of stem stem, reverse the coiling second layer, so repeatedly coiling odd-level, form inner segment coil again, oblique pull wire is to the stem stem in the outside of inner segment coil afterwards, be wound around according to the winding method of inner segment coil, be wound around after terminating, lead to joint A at the wire end of the first coil, B, C; Wherein, draw at the inner coil internal layer of the first coil and have some taps 8,7, position between 6 to group,
Second coil and the first coil symmetry, the wire end of the second coil leads to joint X, Y, Z, and the inner coil internal layer of the second coil draws some taps 5,4, position between 3 groups,
In second coil and the first coil, between each section of coil, the number of plies is identical.
The winding method of dry transformer high-tension coil, it comprises the following steps,
A. winding former or stem stem are placed on coil winding machine or iron core apparatus, on each winding former or stem stem around coil be divided into two groups, two groups of coils are respectively the first coil and the second coil; Wherein, often organize coil and be divided into again inside and outside two sections of coils;
B. with the conducting wire end of the first coil for starting point, carry out coiling to it, conducting wire end starts from stem stem stage casing, and wire is from the stage casing of stem stem to after the outer extreme direction coiling ground floor of stem stem, the reverse coiling second layer again, coiling odd-level, forms inner segment coil, in winding process so repeatedly, inner coil internal layer at the first coil is drawn some taps 8,7,6, and multiple tap is drawn out to position between group;
C. after step b coiling completes, oblique pull wire is on the stem stem in the outside of inner segment coil, carry out the coiling of outer section of coil, wire is from the stage casing of stem stem to after the outer extreme direction coiling ground floor of stem stem, the more oppositely coiling second layer, so repeatedly coiling, the coiling number of plies of its China and foreign countries' section coil is identical with inner segment coil, finally draw joint A from the first coil wire end, B, C;
D. coiling second coil, the second described coil winding step is identical with the first coil, and the second coil of completing of coiling and the first coil symmetrical, second coil is in winding process, inner coil internal layer at the second coil is drawn multiple tap 5,4,3, and multiple tap is drawn out to position between group; And draw joint X from the second winding wire tail end, Y, Z.
A kind of dry-type transformer, its coil adopts above-mentioned high-tension coil.
The dry type transformer structure that structural change of the present invention is traditional, the multistage number of plies that coil adopts, the mode of tap in oblique pull, structure refers to accompanying drawing 2.The present invention does not change the shunting tap position of high-tension coil, the number of turn and profile, and shunting tap schematic diagram refers to Fig. 3.The mode that emphasis of the present invention have employed intersegmental oblique pull connects, and decreases intersegmental wire bonds quantity, improves processing quality.Shunting tap and tradition differ widely, and have employed interior shunting tap mode, technique with manufactured identical in the past, under the prerequisite not increasing technology difficulty, change the performance of product, make performance meet expected design.This new construction may be used for improving transformer performance index, particularly short-circuit impedance, can be used in the main material usage ratio adjusting transformer, for the project implementation of dry-type transformer cost declining.By above-mentioned design, change coil inside Magnetic fluxleakage distribution, can impedance voltage at least 3% be improved, and then reduce copper consumption, reduce costs.
Claims (3)
1. dry transformer high-tension coil, it comprises stem stem (1) and the first coil (21) and the second coil (22), it is characterized in that: the first coil and the second coil winding are on stem stem; In first coil, inside and outside two sections of coils are divided into outward by the stage casing of stem stem, the conducting wire end of the first coil starts from stem stem stage casing, wire is from the stage casing of stem stem to after the outer extreme direction coiling ground floor of stem stem, the reverse coiling second layer again, coiling odd-level so repeatedly, form inner segment coil, oblique pull wire is to the stem stem in the outside of inner segment coil afterwards, be wound around according to the winding method of inner segment coil, after winding terminates, lead to joint (A (B, C)) at the wire end of the first coil; Wherein, draw at the inner coil internal layer of the first coil and have position between some taps (8,7,6) to group,
Second coil and the first coil symmetry, the wire end of the second coil leads to joint (X (Y, Z)), and the inner coil internal layer of the second coil draws position between some taps (5,4,3) group,
In second coil and the first coil, between each section of coil, the number of plies is identical.
2. the winding method of dry transformer high-tension coil, is characterized in that, it comprises the following steps,
A. winding former or stem stem are placed on coil winding machine or iron core apparatus, on each winding former or stem stem around coil be divided into two groups, two groups of coils are respectively the first coil and the second coil; Wherein, often organize coil and be divided into again inside and outside two sections of coils;
B. with the conducting wire end of the first coil for starting point, carry out coiling to it, conducting wire end starts from stem stem stage casing, and wire is from the stage casing of stem stem to after the outer extreme direction coiling ground floor of stem stem, the reverse coiling second layer again, coiling odd-level, forms inner segment coil, in winding process so repeatedly, inner coil internal layer at the first coil is drawn some taps (8,, and multiple tap is drawn out to position between group 7,6);
C. after step b coiling completes, oblique pull wire is on the stem stem in the outside of inner segment coil, carry out the coiling of outer section of coil, wire is from the stage casing of stem stem to after the outer extreme direction coiling ground floor of stem stem, the oppositely coiling second layer, so repeatedly coiling again, the coiling number of plies of its China and foreign countries' section coil is identical with inner segment coil, finally draw joint (A (B, C)) from the first coil wire end;
D. coiling second coil, the second described coil winding step is identical with the first coil, and the second coil of completing of coiling and the first coil symmetrical, second coil is in winding process, inner coil internal layer at the second coil is drawn multiple tap (5,, and multiple tap is drawn out to position between group 4,3); And draw joint (X (Y, Z)) from the second winding wire tail end.
3. adopt a dry transformer high-tension coil for high-tension coil according to claim 1, it is characterized in that, its coil adopts above-mentioned high-tension coil.
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| CN201510792598.7A CN105280361A (en) | 2015-11-17 | 2015-11-17 | High-voltage coil of dry-type transformer, winding method of the high-voltage coil and dry-type transformer thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783144A (en) * | 2017-01-05 | 2017-05-31 | 厦门市奇宏机电设备有限公司 | A kind of multistage is layered cartridge type wire winding |
| CN107993816A (en) * | 2017-12-20 | 2018-05-04 | 湖北三峡职业技术学院 | A kind of SCB types dry-type transformer |
| CN113391131A (en) * | 2021-08-03 | 2021-09-14 | 山东双益电气有限责任公司 | Resistance testing device and method for dry-type transformer tapping winding |
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| CN101923944A (en) * | 2009-06-15 | 2010-12-22 | 苏州工业园区隆盛电器成套设备制造有限公司 | Longitudinal insulating structure of high-voltage segmental layered coil of casting dry type transformer |
| CN202167329U (en) * | 2011-08-01 | 2012-03-14 | 保定天威集团有限公司 | High-voltage coil structure with uniform internal field strength |
| EP2533257A1 (en) * | 2011-06-09 | 2012-12-12 | ABB Technology AG | Transformer coil |
| CN202633033U (en) * | 2012-04-24 | 2012-12-26 | 中铁电气化局集团有限公司 | Transformer coil structure |
| CN205303135U (en) * | 2015-11-17 | 2016-06-08 | 国家电网公司 | Dry -type transformer high -pressure coil and dry -type transformer |
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2015
- 2015-11-17 CN CN201510792598.7A patent/CN105280361A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101923944A (en) * | 2009-06-15 | 2010-12-22 | 苏州工业园区隆盛电器成套设备制造有限公司 | Longitudinal insulating structure of high-voltage segmental layered coil of casting dry type transformer |
| EP2533257A1 (en) * | 2011-06-09 | 2012-12-12 | ABB Technology AG | Transformer coil |
| CN202167329U (en) * | 2011-08-01 | 2012-03-14 | 保定天威集团有限公司 | High-voltage coil structure with uniform internal field strength |
| CN202633033U (en) * | 2012-04-24 | 2012-12-26 | 中铁电气化局集团有限公司 | Transformer coil structure |
| CN205303135U (en) * | 2015-11-17 | 2016-06-08 | 国家电网公司 | Dry -type transformer high -pressure coil and dry -type transformer |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106783144A (en) * | 2017-01-05 | 2017-05-31 | 厦门市奇宏机电设备有限公司 | A kind of multistage is layered cartridge type wire winding |
| CN106783144B (en) * | 2017-01-05 | 2020-03-24 | 奇宏（厦门）电力变压器有限公司 | Multi-section layered drum type winding process |
| CN107993816A (en) * | 2017-12-20 | 2018-05-04 | 湖北三峡职业技术学院 | A kind of SCB types dry-type transformer |
| CN113391131A (en) * | 2021-08-03 | 2021-09-14 | 山东双益电气有限责任公司 | Resistance testing device and method for dry-type transformer tapping winding |
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