CN201562544U - High-voltage coil of high-voltage large-power transformer - Google Patents
High-voltage coil of high-voltage large-power transformer Download PDFInfo
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- CN201562544U CN201562544U CN2009203139434U CN200920313943U CN201562544U CN 201562544 U CN201562544 U CN 201562544U CN 2009203139434 U CN2009203139434 U CN 2009203139434U CN 200920313943 U CN200920313943 U CN 200920313943U CN 201562544 U CN201562544 U CN 201562544U
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Abstract
The utility model relates to a high-voltage coil of a high-voltage large-power transformer and belongs to the technical field of the transformer manufacturing. The technical scheme is that the high-voltage coil comprises a middle wire disc and end part wire discs; the middle wire disc (1) is a wire disc wound by a composite conductor; and the two end part wire discs (2, 3) are wire discs wound by transposed conductors. The middle wire disc of the coil is wound by the composite conductor, thus, the eddy-current loss of the coil cannot be obviously improved, but the cost of the coil is lower than that of the coil using the transposed conductor; and the two end part wire discs are wound by the transposed conductors, thus, the coil can effectively reduce the eddy-current loss of the part of wire discs. The utility model has the advantages that the high-voltage coil with the structure of the utility model integrates the advantages of the composite conductor and the transposed conductors; and compared with the high-voltage coil which is formed mainly by winding the same type of conductor, the high-voltage coil of the utility model has lower material cost and low eddy-current loss and improves the technical and economic index of the high-voltage (over 220kV) large-power transformer.
Description
Affiliated technical field:
The utility model relates to a kind of high-tension coil of high voltage large capcity transformer, belongs to technical field of transformer manufacturing.
Background technology:
Along with the technological progress in whole power industry and power transformer manufacturing field, the separate unit capacity of power transformer constantly increases, and its load loss required value constantly reduces simultaneously.For high voltage (more than the 220kV) large-capacity power transformer, when loss value was less demanding, its high-tension coil generally adopted the composite conductor coiling.Along with the continuous reduction of transformer load loss required value, in order to reduce the eddy current loss in the coil, high-tension coil is more prone to adopt winding transposition wire, but cost is higher.
The utility model content:
The utility model purpose provides a kind of high-tension coil of high voltage large capcity transformer, when reducing high-tension coil eddy current loss, reduces material cost, improves the technical-economic index of power transformer, solves the problems referred to above that exist in the background technology.
The technical solution of the utility model is:
The high-tension coil of high voltage large capcity transformer comprises middle part line cake and end line cake, and middle part line cake is the line cake of composite conductor coiling, and coil both ends line cake is the line cake of winding transposition wire.Coil middle part line cake adopts the composite conductor coiling, and its eddy current loss can obviously not increase, and cost is but low than using transposed conductor; And, adopt winding transposition wire at coil both ends line cake, can effectively reduce the eddy current loss of this this part line cake.
Said transposed conductor is a self-adhering transposed conductor.
Coil middle part line cake is to the line cake of part between the tap section, and the line cake of tap section part, is the line cake of composite conductor coiling; The tap section arrives the line cake between the line cake of coil both ends later on, is the line cake of self-adhering transposed conductor coiling.
Transformer high-voltage side voltage is more than 220kV, and the high pressure winding adopts two-way parallel-connection structure up and down, and realizes the high-pressure side non-excitation pressure adjustment by the tap section.
The utility model is according to the characteristic distributions of Magnetic Leakage Field of Transformer on coil, and dissimilar leads is adopted in different leakage fields distributed areas, thereby realizes the more design of optimization.The leakage flux of transformer coil inside can be considered respectively by vertical leakage flux and horizontal leakage flux.Corresponding therewith, the eddy current loss in transformer coil can be divided into vertical leakage flux and produce the longitudinal turbulence loss and walk crosswise leakage flux and produce horizontal eddy current loss.At transformer coil middle part, distribution mainly be vertical leakage flux, laterally stray flux distribution is less; And at the coil both ends, laterally leakage flux obviously increases.
The beneficial effects of the utility model: the high-tension coil of this utility model structure, combine composite conductor and transposed conductor advantage separately, compare with the high-tension coil of same type of lead coiling of main employing, material cost is lower, the eddy current loss of coil itself is not high simultaneously, has improved high voltage (more than the 220kV) high-power transformer technical-economic index.
Description of drawings:
Accompanying drawing is the utility model example structure schematic diagram;
Among the figure: middle part line cake 1, end line cake 2,3, tap section 4,5.
Embodiment:
Below in conjunction with accompanying drawing, the utility model is described in further detail by embodiment.
In an embodiment, the high-tension coil of high voltage large capcity transformer comprises middle part line cake and end line cake, and middle part line cake 1 is the line cake of composite conductor coiling, and coil both ends line cake 2,3 is the line cake of winding transposition wire.Coil middle part line cake adopts the composite conductor coiling, and its eddy current loss can obviously not increase, and cost is but low than using transposed conductor; And, adopt winding transposition wire at coil both ends line cake, can effectively reduce the eddy current loss of this this part line cake.Said transposed conductor is a self-adhering transposed conductor; Coil middle part line cake 1 is to the line cake of part between the tap section, and the line cake of tap section 4,5 parts, is the line cake of composite conductor coiling; To the line cake between the coil both ends line cake 2,3, be the line cake of self-adhering transposed conductor coiling after the tap section 4,5.
Claims (2)
1. the high-tension coil of a high voltage large capcity transformer is characterized in that comprising middle part line cake and end line cake, and middle part line cake (1) is the line cake of composite conductor coiling, and coil both ends line cake (2,3) is the line cake of winding transposition wire.
2. according to the high-tension coil of the described high voltage large capcity transformer of claim 1, it is characterized in that said transposed conductor is a self-adhering transposed conductor; Coil middle part line cake (1) is to the line cake of part between the tap section (4,5), and the line cake of tap section (4,5) part, is the line cake of composite conductor coiling; To the line cake between the coil both ends line cake (2,3), be the line cake of self-adhering transposed conductor coiling after the tap section (4,5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203139434U CN201562544U (en) | 2009-11-03 | 2009-11-03 | High-voltage coil of high-voltage large-power transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203139434U CN201562544U (en) | 2009-11-03 | 2009-11-03 | High-voltage coil of high-voltage large-power transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201562544U true CN201562544U (en) | 2010-08-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203139434U Expired - Fee Related CN201562544U (en) | 2009-11-03 | 2009-11-03 | High-voltage coil of high-voltage large-power transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201562544U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106504871A (en) * | 2016-12-02 | 2017-03-15 | 中国西电电气股份有限公司 | A kind of single dual continuous type coil |
-
2009
- 2009-11-03 CN CN2009203139434U patent/CN201562544U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106504871A (en) * | 2016-12-02 | 2017-03-15 | 中国西电电气股份有限公司 | A kind of single dual continuous type coil |
| CN106504871B (en) * | 2016-12-02 | 2018-06-15 | 中国西电电气股份有限公司 | A kind of list-dual continuous type coil |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100825 Termination date: 20131103 |