CN104752039B - A kind of 132kV double windings ULTC insulation system - Google Patents
A kind of 132kV double windings ULTC insulation system Download PDFInfo
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- CN104752039B CN104752039B CN201510173612.5A CN201510173612A CN104752039B CN 104752039 B CN104752039 B CN 104752039B CN 201510173612 A CN201510173612 A CN 201510173612A CN 104752039 B CN104752039 B CN 104752039B
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Abstract
The present invention relates to a kind of 132kV double windings ULTC insulation system, belong to the manufacturing technology field of transformer.Technical scheme is：Low-voltage coil (3) is continous way and intermediate symmetry structure all the way, is made up of a coil；High-tension coil（2）It is two-way insertion shielding continous way in parallel, high-tension coil head end (6) is insertion protected type winding structure, and other line segments are continous way winding structure；High-tension coil（2）With low-voltage coil（3）Between and high-tension coil（2）Paper web oil clearance insulation system (12) is between voltage regulation coil I and voltage regulation coil II；Voltage regulation coil electrostatic ring (10) and voltage regulation coil internal side diameter square ring are provided between voltage regulation coil I tail ends (7) and voltage regulation coil II head ends (8) and voltage regulation coil end paper circle (9)（16）With voltage regulation coil dihedral ring（14）.The positive effect of the present invention is used for Large Copacity low-loss double winding on-load voltage regulation graded insulated transformer, produces high-end 132kV voltage class transformer, and insulating properties reliability meets market needs.
Description
Technical field
The present invention relates to a kind of 132kV double windings ULTC insulation system, belong to the manufacturing technology of transformer
Field.
Background technology
At present, China's power network does not have 132kV voltage class, therefore China does not have the reliable 132kV transformers of relative maturity
Design and manufacturing technology.International market was in great demand to 132kV grades of power transformer product in the last few years, and China's transformer industry is badly in need of grinding
Send out 132kV voltage class transformers high-end.Particularly 132kV double windings ULTC insulation system, is 132kV transformations
Device design focal point, this structure is particularly well-suited to 132kV Large Copacity low-loss double winding on-load voltage regulation graded insulated transformers.
The content of the invention
It is an object of the present invention to provide a kind of 132kV double windings ULTC insulation system, it is adaptable to which Large Copacity is low
Loss double winding on-load voltage regulation graded insulated transformer, insulating properties reliability solves the problems, such as background technology.
The technical scheme is that：A kind of 132kV double windings ULTC insulation system, comprising core limb,
High-tension coil, low-voltage coil, voltage regulation coil I and voltage regulation coil II；Transformer body has three core limbs, on each core limb
Suit high-tension coil, low-voltage coil, voltage regulation coil I and voltage regulation coil II, are sequentially followed successively by low-voltage coil, high-voltage line from inside to outside
Circle and voltage regulation coil, the top of voltage regulation coil is voltage regulation coil I, and bottom is voltage regulation coil II；Low-voltage coil is continous way all the way
And intermediate symmetry structure, it is made up of a coil；High-tension coil is two-way insertion shielding continous way in parallel, and high-tension coil head end is
Insertion protected type winding structure, other line segments are continous way winding structure；Between high-tension coil and low-voltage coil and high-voltage line
Paper web oil clearance insulation system is between circle and voltage regulation coil I and voltage regulation coil II；Voltage regulation coil I tail ends insulating part and line pressure regulator
The structure for enclosing II head end insulating parts is identical, is equipped with voltage regulation coil electrostatic ring, voltage regulation coil internal side diameter square ring and voltage regulation coil anti-
Square ring, impact characteristics and Electric Field Distribution for improving voltage regulation coil end；Positioned at most inner side low-voltage coil and core limb it
Between be provided with iron core column barricade, the corner angle of core limb is all placed within the electric shield of iron core column barricade,
The partial discharge quantity reduction of device body.
The outlet of high-tension coil head end coats electric insulation crimped paper, strengthens high-tension coil head end electrical insulation strength；High pressure
Coil head end outlet position adds double square rings, voltage regulation coil internal side diameter square ring and high-tension coil head end at the first head of high-tension coil of bilayer
Between with stay support, blank space with crimped paper fill, extension high-tension coil and voltage regulation coil between creep age distance.
The top of the high-tension coil and low-voltage coil is fixed by pressing plate, secondary pressing plate and briquetting.
The positive effect of the present invention is used for Large Copacity low-loss double winding on-load voltage regulation graded insulated transformer, produces high-end
132kV voltage class transformers, insulating properties reliability meets market needs.
Brief description of the drawings
Fig. 1 is Facad structure sectional view of the invention；
1 is core limb in figure, and 2 is high-tension coil, and 3 is low-voltage coil, and 4 is voltage regulation coil I, 5 is voltage regulation coil II, 6
It is high-tension coil head end, 7 is voltage regulation coil I tail ends, and 8 is voltage regulation coil II head ends, and 10 is voltage regulation coil electrostatic ring, and 11 is iron
Heart stem barricade, 12 is paper web oil clearance insulation system, double square rings at the first head of 13 high-tension coils, and 14 is voltage regulation coil dihedral ring,
15 is voltage regulation coil outside diameter paper web, and 16 is voltage regulation coil internal side diameter square ring, and 17 is pressing plate, and 18 is secondary pressing plate, and 19 is briquetting, 24
It is insulating part.
Specific embodiment
Below in conjunction with accompanying drawing, by embodiment, the invention will be further described.
A kind of 132kV double windings ULTC insulation system, comprising core limb 1, high-tension coil 2, low-voltage coil
3rd, voltage regulation coil I4 and voltage regulation coil II5；Transformer body has three core limbs, be set with each core limb high-tension coil,
Low-voltage coil, voltage regulation coil I and voltage regulation coil II, are sequentially followed successively by low-voltage coil 3, high-tension coil 2 and line pressure regulator from inside to outside
Circle, the top of voltage regulation coil is voltage regulation coil I4, and bottom is voltage regulation coil II5；Low-voltage coil 3 is continous way all the way and middle right
Claim structure, be made up of a coil；High-tension coil 2 is two-way insertion shielding continous way in parallel, and high-tension coil head end 6 shields for insertion
Formula winding structure is covered, other line segments are continous way winding structure；Between high-tension coil 2 and low-voltage coil 3 and high-tension coil 2
Paper web oil clearance insulation system 12 is between voltage regulation coil I and voltage regulation coil II；Voltage regulation coil I tail ends insulating part and line pressure regulator
The structure for enclosing II head end insulating parts is identical, is equipped with voltage regulation coil electrostatic ring 10, voltage regulation coil internal side diameter square ring 16 and line pressure regulator
Circle dihedral ring 14, impact characteristics and Electric Field Distribution for improving voltage regulation coil end；Positioned at the low-voltage line of core limb most inner side
Iron core column barricade 11 is provided between circle 3 and core limb 1, the corner angle of core limb is all placed in iron core column barricade
Electric shield within, the reduction of the partial discharge quantity of device body.
The outlet of high-tension coil head end 6 coats electric insulation crimped paper, strengthens high-tension coil head end electrical insulation strength；High pressure
The outlet position of coil head end 6 adds double square rings 13, voltage regulation coil internal side diameter square ring 16 and high-voltage line at the first head of high-tension coil of bilayer
Supported with stay between circle head end, blank space is filled with crimped paper, the creep age distance between extension high-tension coil and voltage regulation coil.
The top of the high-tension coil 2 and low-voltage coil 3 is fixed by pressing plate 17, secondary pressing plate 18 and briquetting 19.
Referring to the drawings, embodiment more specifically implementation method is as follows：
Low-voltage coil 3 is continous way and intermediate symmetry structure all the way, is made up of a coil；High-tension coil 2 be two-way simultaneously
Connection insertion shielding continous way, high-tension coil head end 6 is insertion protected type winding structure, and other line segments are continous way winding structure；
It is that paper web oil clearance is exhausted between high-tension coil 2 and low-voltage coil 3 and between high-tension coil 2 and voltage regulation coil I and voltage regulation coil II
Edge structure 12.Because high-tension coil 2 is 132kV insulation systems, the voltage of its high-tension coil head end 6 is 132kV, is impacted to reduce
Voltage bottom voltage gradient, high-tension coil head end 6 uses continous way coiling using insertion protected type coiling, other line segments.
Voltage regulation coil electrostatic is provided between voltage regulation coil I tail ends 7 and voltage regulation coil II head ends 8 and voltage regulation coil end paper circle
Ring 10, can so reduce electric-field intensity maximum between voltage regulation coil I4 and voltage regulation coil II5, uniform end Electric Field Distribution.
Voltage regulation coil I tail ends 7 with being provided with voltage regulation coil internal side diameter square ring 16, voltage regulation coil dihedral ring 14 between voltage regulation coil II head ends 8,
It is additionally provided with voltage regulation coil outside diameter paper web 15 and insulating part 24, it is ensured that voltage regulation coil I and voltage regulation coil II and high-tension coil
Insulation distance between head end 6.The outlet of high-tension coil head end 6 coats electric insulation crimped paper, and enhancing high-tension coil head end is electrically exhausted
Edge intensity, outermost layer adds high pressure double square rings 13 at the first head of coil；Used between voltage regulation coil internal side diameter square ring 16 and high-tension coil head end
Stay is supported, and blank space is filled with crimped paper, the creep age distance between extension high-tension coil and voltage regulation coil.
Iron core column barricade 11 is provided between inner side low-voltage coil and core limb 1, so makes the corner angle whole of core limb
It is placed within the electric shield of iron core column barricade, the partial discharge quantity reduction of device body.
The top of high-tension coil 2 and low-voltage coil 3 is fixed by pressing plate 17, secondary pressing plate 18 and briquetting 19.
Claims (3)
1. a kind of 132kV double windings ULTC insulation system, comprising core limb (1), high-tension coil (2), low-voltage line
Circle (3), voltage regulation coil I（4）With voltage regulation coil II（5）；Transformer body has three core limbs, is set with each core limb high
Line ball circle, low-voltage coil, voltage regulation coil I and voltage regulation coil II, are sequentially followed successively by low-voltage coil from inside to outside（3）, high-tension coil
（2）And voltage regulation coil, the top of voltage regulation coil is voltage regulation coil I（4）, bottom is voltage regulation coil II（5）, it is characterised in that：It is low
Line ball circle (3) is continous way and intermediate symmetry structure all the way, is made up of a coil；High-tension coil（2）Inserted for two-way is in parallel
Shielding continous way, high-tension coil head end (6) is insertion protected type winding structure, and other line segments are continous way winding structure；High pressure
Coil（2）With low-voltage coil（3）Between and high-tension coil（2）Paper web oil is between voltage regulation coil I and voltage regulation coil II
Gap insulation structure (12)；Voltage regulation coil I tail ends insulating part is identical with the structure of voltage regulation coil II head end insulating parts, is equipped with pressure regulation
Coil electrostatic ring (10), voltage regulation coil internal side diameter square ring（16）With voltage regulation coil dihedral ring（14）, for improving voltage regulation coil end
The impact characteristics and Electric Field Distribution in portion；Positioned at the low-voltage coil (3) and core limb of core limb most inner side（1）Between be provided with the heart unshakable in one's determination
Post barricade（11）, the corner angle of core limb is all placed within the electric shield of iron core column barricade, the part of device body is put
Electricity reduction.
2. a kind of 132kV double windings ULTC insulation system according to claim 1, it is characterised in that：It is high
Line ball circle head end（6）Outlet coats electric insulation crimped paper, strengthens high-tension coil head end electrical insulation strength；High-tension coil head end
（6）Outlet position adds double square rings at the first head of high-tension coil of bilayer（13）, voltage regulation coil internal side diameter square ring（16）With high-tension coil
Supported with stay between head end, blank space is filled with crimped paper, the creep age distance between extension high-tension coil and voltage regulation coil.
3. a kind of 132kV double windings ULTC insulation system according to claim 1 and 2, it is characterised in that：
The top of the high-tension coil (2) and low-voltage coil (3) is by pressing plate (17), secondary pressing plate（18）And briquetting (19) is compressed admittedly
It is fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510173612.5A CN104752039B (en) | 2015-04-14 | 2015-04-14 | A kind of 132kV double windings ULTC insulation system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510173612.5A CN104752039B (en) | 2015-04-14 | 2015-04-14 | A kind of 132kV double windings ULTC insulation system |
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| CN104752039A CN104752039A (en) | 2015-07-01 |
| CN104752039B true CN104752039B (en) | 2017-06-27 |
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| CN106653324A (en) * | 2016-12-01 | 2017-05-10 | 保定天威保变电气股份有限公司 | Voltage-regulating winding end part insulating structure for controlling creepage for transformer |
| CN109192455B (en) * | 2018-08-06 | 2020-12-08 | 嘉兴华竹电子有限公司 | Transformer device |
| CN109509621A (en) * | 2018-12-11 | 2019-03-22 | 保定天威集团特变电气有限公司 | A kind of 35KV grades of ice-melt transformer body |
| CN112420361B (en) * | 2020-11-11 | 2022-01-04 | 广东电网有限责任公司 | On-load voltage regulation oil-immersed power transformer |
| CN118737671A (en) * | 2023-03-30 | 2024-10-01 | 特变电工沈阳变压器集团有限公司 | Large capacity low voltage on-load voltage regulating generator transformer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH0286107A (en) * | 1988-09-22 | 1990-03-27 | Hitachi Ltd | Three-phase on-load tap changing transformer |
| CN201060733Y (en) * | 2007-06-19 | 2008-05-14 | 上海南桥变压器有限责任公司 | Device structure of enhanced anti-outburst short-circuit capacity transformer |
| CN102360828B (en) * | 2011-08-04 | 2013-06-19 | 保定天威集团有限公司 | 220kV-grade Vx connection traction transformer body structure |
| CN103280305B (en) * | 2013-07-01 | 2015-11-25 | 保定天威集团特变电气有限公司 | A kind of 132kV level 36 pulse wave drive rectifier transformer |
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