CN110993283B - Voltage-regulating outgoing line structure and configuration method thereof - Google Patents
Voltage-regulating outgoing line structure and configuration method thereof Download PDFInfo
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- CN110993283B CN110993283B CN201911341966.0A CN201911341966A CN110993283B CN 110993283 B CN110993283 B CN 110993283B CN 201911341966 A CN201911341966 A CN 201911341966A CN 110993283 B CN110993283 B CN 110993283B
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- forming insulating
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- 238000000034 method Methods 0.000 title claims abstract description 8
- 230000001105 regulatory effect Effects 0.000 claims abstract description 72
- 239000000123 paper Substances 0.000 claims abstract description 28
- 238000000465 moulding Methods 0.000 claims abstract description 19
- 238000005452 bending Methods 0.000 claims abstract description 10
- 238000010079 rubber tapping Methods 0.000 claims abstract description 8
- 239000011087 paperboard Substances 0.000 claims abstract description 3
- 239000012212 insulator Substances 0.000 claims description 24
- 230000003068 static effect Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 abstract description 3
- 238000009826 distribution Methods 0.000 description 5
- 230000005684 electric field Effects 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F27/00—Details of transformers or inductances, in general
- H01F27/28—Coils; Windings; Conductive connections
- H01F27/32—Insulating of coils, windings, or parts thereof
- H01F27/324—Insulation between coil and core, between different winding sections, around the coil; Other insulation structures
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
- H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
- H01F41/04—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets for manufacturing coils
- H01F41/12—Insulating of windings
- H01F41/125—Other insulating structures; Insulating between coil and core, between different winding sections, around the coil
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Insulating Of Coils (AREA)
Abstract
The invention relates to a voltage-regulating outgoing line structure and a configuration method thereof, and belongs to the technical field of transformers. The technical scheme is as follows: before the voltage regulating branch wire of the voltage regulating coil is not bent, wrapping insulating crepe paper with the thickness matched with the voltage level of the coil outside the voltage regulating branch wire and the lead-out wire of the electrostatic ring, and then placing a vertical forming insulating piece and corrugated paper board; after the voltage regulating coil is sleeved, the voltage regulating tapping wire passes through the insulating supporting plate at the end part of the body and completes the bending of the horizontally arranged part; after the voltage regulating tapping line is bent in place, placing a horizontal molding insulating piece and a corrugated board; the vertical molding insulating piece and the horizontal molding insulating piece are lapped by a slope opening. The voltage regulating outlet structure adopts an arrangement mode of oil gap-forming insulating parts-oil gap-forming insulating parts, ensures that the oil gaps around the voltage regulating outlet are uniformly distributed, and strengthens the insulation performance of the end part of the device body; the L-shaped wire outlet structure of the voltage regulating coil is divided into a vertical part and a horizontal part, so that the installation of a molded insulating part is facilitated, the good mechanical property of the wire outlet is ensured, and the short-circuit resistance of the transformer is enhanced.
Description
Technical Field
The invention relates to a voltage-regulating outgoing line structure and a configuration method thereof, and belongs to the technical field of transformers.
Background
In a power transformer, high-voltage-class voltage regulating coils of part of products are arranged inside a transformer body, lead wires are required to be led out from the end part of the transformer body, electric field distribution near the lead wires is uneven, local field intensity concentration phenomenon can occur, the end part of the transformer body is poor in insulation reliability, and the risk of partial discharge and even insulation breakdown exists.
Disclosure of Invention
The invention aims to provide a voltage-regulating outgoing line structure and a configuration method thereof, aiming at the outgoing line position of a high-voltage-class voltage-regulating coil, the voltage-regulating outgoing line structure adopts an arrangement mode of oil gap-forming insulating parts-oil gap-forming insulating parts, ensures uniform distribution of oil gaps around the voltage-regulating outgoing line, effectively improves electric field distribution at the outgoing line position and strengthens the insulating property of the end part of a body; the L-shaped outlet structure of the voltage regulating coil is divided into a vertical part and a horizontal part, so that the installation of a molded insulating part is facilitated, the good mechanical property of an outlet is ensured, the short circuit resistance of the transformer is enhanced, and the problems in the background art are effectively solved.
The technical scheme of the invention is as follows: the voltage regulating outlet structure comprises a voltage regulating coil, a voltage regulating coil electrostatic ring, insulating crepe paper, an insulating supporting plate, a vertical forming insulating piece, a horizontal forming insulating piece, corrugated paper boards, voltage regulating branch wires and an electrostatic ring outgoing line, wherein the voltage regulating branch wires are connected with the voltage regulating coil, and the electrostatic ring outgoing line is connected with the voltage regulating coil electrostatic ring; the vertical forming insulator comprises an outer first layer vertical forming insulator, an inner second layer vertical forming insulator and an outer second layer vertical forming insulator; the horizontal molding insulating piece comprises an outer first layer horizontal molding insulating piece, an inner second layer horizontal molding insulating piece and an outer second layer horizontal molding insulating piece; the voltage regulating branch wire and the outside of the electrostatic ring outgoing wire are wrapped with insulating crepe paper; the voltage-regulating branch line is of a bending structure, the bending structure consists of a vertical setting part and a horizontal setting part, the insulating support plate is positioned on the vertical setting part of the voltage-regulating branch line, and the vertical setting part of the voltage-regulating branch line penetrates through the insulating support plate at the end part of the body; the vertical setting part of the voltage regulating branch line is used for placing an outer first layer vertical forming insulating part, a corrugated board, an inner first layer vertical forming insulating part, an inner second layer vertical forming insulating part and an outer second layer vertical forming insulating part outside the insulating crepe paper; the horizontal setting part of the voltage regulating branch line is used for placing an outer first layer horizontal forming insulating part, a corrugated board, an inner first layer horizontal forming insulating part, an inner second layer horizontal forming insulating part and an outer second layer horizontal forming insulating part outside the insulating crepe paper; the vertical forming insulating piece and the horizontal forming insulating piece are correspondingly provided with inclined grooves, the inclined grooves are lapped through inclined slope openings, the lapping positions are positioned at the lower part of the insulating supporting plate, the inner layer lapping positions and the outer layer lapping positions are staggered up and down, and the vertical forming insulating piece and the horizontal forming insulating piece are bound and fixed through insulating crepe paper.
The thickness of the insulating crepe paper is matched with the voltage level of the voltage regulating coil.
A configuration method of a voltage regulating outlet structure comprises the following steps: (1) before the voltage regulating branch connection wire of the voltage regulating coil is not bent, the voltage regulating branch connection wire and the static ring lead-out wire are wrapped with insulating crepe paper with the thickness matched with the voltage level of the coil, and then an outer first layer vertical forming insulating piece, a corrugated board, an inner first layer vertical forming insulating piece, an inner second layer vertical forming insulating piece and an outer second layer vertical forming insulating piece are placed layer by layer; (2) after the voltage regulating coil is sleeved, the voltage regulating tapping wire passes through the insulating supporting plate at the end part of the body and completes the bending of the horizontally arranged part; (3) after the voltage regulating tapping line is bent in place, placing an outer first layer horizontal forming insulating part, corrugated board, an inner first layer horizontal forming insulating part, an inner second layer horizontal forming insulating part and an outer second layer horizontal forming insulating part layer by layer; (4) the vertical forming insulating piece and the horizontal forming insulating piece are lapped by a slope opening, the lapping position is positioned at the lower part of the insulating supporting plate, the inner layer lapping position and the outer layer lapping position are staggered up and down so as to be convenient for operation, and the insulating crepe paper is used for binding and fixing.
The beneficial effects of the invention are as follows: aiming at the outgoing line of the high-voltage-level voltage-regulating coil, the voltage-regulating outgoing line structure adopts an arrangement mode of oil gap-forming insulating pieces-oil gap-forming insulating pieces, so that the oil gap distribution around the voltage-regulating outgoing line is ensured to be uniform, the electric field distribution at the outgoing line is effectively improved, and the insulating performance of the end part of the body of the device is enhanced; the L-shaped outlet structure of the voltage regulating coil is divided into a vertical part and a horizontal part, so that the installation of a formed insulating part is facilitated, the good mechanical property of an outlet is ensured, and the short-circuit resistance of the transformer is enhanced.
Drawings
FIG. 1 is a side view of the present invention;
FIG. 2 is a schematic partial cross-sectional view of the present invention;
in the figure: the voltage regulating coil 1, the voltage regulating coil electrostatic ring 2, the insulating crepe paper 3, the insulating supporting plate 4, the outer second layer vertical forming insulating piece 5, the outer first layer vertical forming insulating piece 6, the outer second layer horizontal forming insulating piece 7, the outer first layer horizontal forming insulating piece 8, the corrugated board 9, the inner second layer vertical forming insulating piece 10, the inner first layer vertical forming insulating piece 11, the inner second layer horizontal forming insulating piece 12, the inner first layer horizontal forming insulating piece 13, the voltage regulating branch line 14 and the electrostatic ring outgoing line 15.
Detailed Description
The technical scheme of the invention is further described in detail below with reference to the accompanying drawings and the examples.
The voltage regulating outlet structure comprises a voltage regulating coil 1, a voltage regulating coil electrostatic ring 2, insulating crepe paper 3, an insulating supporting plate 4, a vertical forming insulating piece, a horizontal forming insulating piece, corrugated boards 9, voltage regulating branch wires 14 and an electrostatic ring outgoing line 15, wherein the voltage regulating branch wires 14 are connected with the voltage regulating coil 1, and the electrostatic ring outgoing line 15 is connected with the voltage regulating coil electrostatic ring 2; the vertical forming insulator comprises an outer first layer vertical forming insulator 6, an inner first layer vertical forming insulator 11, an inner second layer vertical forming insulator 10 and an outer second layer vertical forming insulator 5; the horizontal molding insulator comprises an outer first layer horizontal molding insulator 8, an inner first layer horizontal molding insulator 13, an inner second layer horizontal molding insulator 12 and an outer second layer horizontal molding insulator 7; the voltage regulating branch line 14 and the electrostatic ring outgoing line 15 are wrapped with insulating crepe paper 3; the voltage-regulating branch line 14 is of a bending structure, the bending structure consists of a vertical setting part and a horizontal setting part, the insulating support plate 4 is positioned on the vertical setting part of the voltage-regulating branch line 14, and the vertical setting part of the voltage-regulating branch line 14 penetrates through the insulating support plate 4 at the end part of the body; the vertical arrangement part of the voltage regulating branch line 14 is used for placing an outer first layer vertical forming insulating piece 6, a corrugated board 9, an inner first layer vertical forming insulating piece 11, an inner second layer vertical forming insulating piece 10 and an outer second layer vertical forming insulating piece 5 outside the insulating crepe paper 3; the horizontal setting part of the voltage regulating branch line 14 is used for placing an outer first layer horizontal forming insulating piece 8, a corrugated board 9, an inner first layer horizontal forming insulating piece 13, an inner second layer horizontal forming insulating piece 12 and an outer second layer horizontal forming insulating piece 7 outside the insulating crepe paper 3; the vertical forming insulating part and the horizontal forming insulating part are correspondingly provided with inclined grooves, the inclined grooves are lapped through inclined slope openings, the lapping position is positioned at the lower part of the insulating supporting plate 4, the lapping positions of the inner layer and the outer layer are staggered up and down, and the insulating corrugated paper 3 is used for binding and fixing.
The thickness of the insulating crepe paper 3 is matched with the voltage level of the voltage regulating coil 1.
A configuration method of a voltage regulating outlet structure comprises the following steps: (1) before the voltage regulating branch connection wire of the voltage regulating coil is not bent, the voltage regulating branch connection wire and the static ring lead-out wire are wrapped with insulating crepe paper with the thickness matched with the voltage level of the coil, and then an outer first layer vertical forming insulating piece, a corrugated board, an inner first layer vertical forming insulating piece, an inner second layer vertical forming insulating piece and an outer second layer vertical forming insulating piece are placed layer by layer; (2) after the voltage regulating coil is sleeved, the voltage regulating tapping wire passes through the insulating supporting plate at the end part of the body and completes the bending of the horizontally arranged part; (3) after the voltage regulating tapping line is bent in place, placing an outer first layer horizontal forming insulating part, corrugated board, an inner first layer horizontal forming insulating part, an inner second layer horizontal forming insulating part and an outer second layer horizontal forming insulating part layer by layer; (4) the vertical forming insulating piece and the horizontal forming insulating piece are lapped by a slope opening, the lapping position is positioned at the lower part of the insulating supporting plate, the inner layer lapping position and the outer layer lapping position are staggered up and down so as to be convenient for operation, and the insulating crepe paper is used for binding and fixing.
In practical application, the pressure regulating wire outlet structure adopts an arrangement mode of oil gap-forming insulating parts, so that the oil gap and supporting force are uniformly distributed. In addition, because the voltage-regulating outlet wire needs to axially pass through the insulating supporting plate at the end part of the body and then is led out in the horizontal direction, the L-shaped outlet wire structure at the outermost layer of the voltage-regulating outlet wire is divided into a vertical part and a horizontal part, namely, the voltage-regulating outlet wire is formed by splicing a vertical molding insulating part and a horizontal molding insulating part. The vertical forming insulating part is arranged before the voltage-regulating outgoing line is bent in place, the horizontal forming insulating part is arranged after the voltage-regulating outgoing line is bent in place to form the insulating supporting plate, the slope opening lap joint is formed on the two forming insulating parts, the lap joint position is arranged on the outer side of the insulating supporting plate, the slope opening lap joint is wrapped with crepe paper, the outgoing line structure is convenient to install, good mechanical performance of the voltage-regulating outgoing line can be guaranteed, the short circuit resistance of a transformer is improved, reliable oil gaps outside the voltage-regulating outgoing line can be guaranteed, electric field distribution at the outgoing line position is effectively improved, and the insulating performance of the end part of a body of the transformer is enhanced.
Claims (3)
1. The utility model provides a pressure regulating line structure which characterized in that: the high-voltage-regulating-performance corrugated paper comprises a voltage regulating coil (1), a voltage regulating coil electrostatic ring (2), insulating crepe paper (3), an insulating supporting plate (4), a vertical forming insulating piece, a horizontal forming insulating piece, corrugated paper boards (9), voltage regulating branch wires (14) and electrostatic ring outgoing wires (15), wherein the voltage regulating branch wires (14) are connected with the voltage regulating coil (1), and the electrostatic ring outgoing wires (15) are connected with the voltage regulating coil electrostatic ring (2); the vertical forming insulator comprises an outer first layer vertical forming insulator (6), an inner first layer vertical forming insulator (11), an inner second layer vertical forming insulator (10) and an outer second layer vertical forming insulator (5); the horizontal molding insulator comprises an outer first layer horizontal molding insulator (8), an inner first layer horizontal molding insulator (13), an inner second layer horizontal molding insulator (12) and an outer second layer horizontal molding insulator (7); the voltage regulating branch line (14) and the electrostatic ring outgoing line (15) are wrapped with insulating crepe paper (3); the voltage-regulating branch line (14) is of a bending structure, the bending structure consists of a vertical setting part and a horizontal setting part, the insulating support plate (4) is positioned on the vertical setting part of the voltage-regulating branch line (14), and the vertical setting part of the voltage-regulating branch line (14) penetrates through the insulating support plate (4) at the end part of the body; the vertical arrangement part of the voltage regulating branch line (14) is used for placing an outer first layer vertical forming insulating part (6), a corrugated board (9), an inner first layer vertical forming insulating part (11), an inner second layer vertical forming insulating part (10) and an outer second layer vertical forming insulating part (5) outside the insulating crepe paper (3); the horizontal arrangement part of the voltage regulating branch line (14) is used for placing an outer first layer horizontal forming insulating part (8), a corrugated board (9), an inner first layer horizontal forming insulating part (13), an inner second layer horizontal forming insulating part (12) and an outer second layer horizontal forming insulating part (7) outside the insulating crepe paper (3); the vertical forming insulating piece and the horizontal forming insulating piece are correspondingly provided with inclined grooves, the inclined grooves are lapped through inclined slope openings, the lapping position is positioned at the lower part of the insulating supporting plate (4) and the lapping positions of the inner layer and the outer layer are staggered up and down, and the vertical forming insulating piece and the horizontal forming insulating piece are bound and fixed through the insulating crepe paper (3).
2. A voltage regulating outlet structure according to claim 1, wherein: the thickness of the insulating crepe paper (3) is matched with the voltage level of the voltage regulating coil (1).
3. A method for configuring a voltage regulating outlet structure, using the voltage regulating outlet structure of claim 2, characterized by comprising the steps of: (1) before the voltage regulating branch connection wire of the voltage regulating coil is not bent, the voltage regulating branch connection wire and the static ring lead-out wire are wrapped with insulating crepe paper with the thickness matched with the voltage level of the coil, and then an outer first layer vertical forming insulating piece, a corrugated board, an inner first layer vertical forming insulating piece, an inner second layer vertical forming insulating piece and an outer second layer vertical forming insulating piece are placed layer by layer; (2) after the voltage regulating coil is sleeved, the voltage regulating tapping wire passes through the insulating supporting plate at the end part of the body and completes the bending of the horizontally arranged part; (3) after the voltage regulating tapping line is bent in place, placing an outer first layer horizontal forming insulating part, corrugated board, an inner first layer horizontal forming insulating part, an inner second layer horizontal forming insulating part and an outer second layer horizontal forming insulating part layer by layer; (4) the vertical forming insulating piece and the horizontal forming insulating piece are lapped by a slope opening, the lapping position is positioned at the lower part of the insulating supporting plate, the inner layer lapping position and the outer layer lapping position are staggered up and down so as to be convenient for operation, and the insulating crepe paper is used for binding and fixing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911341966.0A CN110993283B (en) | 2019-12-24 | 2019-12-24 | Voltage-regulating outgoing line structure and configuration method thereof |
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| CN201911341966.0A CN110993283B (en) | 2019-12-24 | 2019-12-24 | Voltage-regulating outgoing line structure and configuration method thereof |
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| CN110993283A CN110993283A (en) | 2020-04-10 |
| CN110993283B true CN110993283B (en) | 2023-11-21 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112992487B (en) * | 2021-03-22 | 2022-08-12 | 保定天威保变电气股份有限公司 | Compact arrangement structure and method for 220 kV-level off-circuit tap-changer |
| CN116544009A (en) * | 2023-06-14 | 2023-08-04 | 西安西电变压器有限责任公司 | Transformer, coil end outgoing structure in transformer and outgoing method |
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| CN210956399U (en) * | 2019-12-24 | 2020-07-07 | 保定天威保变电气股份有限公司 | Voltage-regulating outgoing line structure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| ES2784365T3 (en) * | 2015-10-20 | 2020-09-24 | Abb Schweiz Ag | Dry Type Encapsulated Transformer with Flexible Connection Terminal |
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| GB978053A (en) * | 1961-08-09 | 1964-12-16 | Smit & Willem & Co Nv | Improvements in and relating to transformers or choke-coils for high voltages and to a method for the manufacture thereof |
| JP2005302802A (en) * | 2004-04-07 | 2005-10-27 | Mitsubishi Electric Corp | Oil filled electric apparatus |
| CN202549587U (en) * | 2012-03-29 | 2012-11-21 | 中国西电电气股份有限公司 | 500kV transformer body insulating structure in accordance with full insulation level |
| CN204011003U (en) * | 2014-07-14 | 2014-12-10 | 江苏华鹏变压器有限公司 | A kind of novel pressure regulation outlet insulation system |
| CN204045384U (en) * | 2014-08-29 | 2014-12-24 | 特变电工沈阳变压器集团有限公司 | A kind of external voltage regulation coil outlet structure |
| CN106558404A (en) * | 2015-09-24 | 2017-04-05 | 特变电工衡阳变压器有限公司 | The outlet structure and high-impedance transformer of high-impedance transformer |
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| CN110993283A (en) | 2020-04-10 |
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