CN105390258A - E turn insulation class 220kV transformer - Google Patents
E turn insulation class 220kV transformer Download PDFInfo
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- CN105390258A CN105390258A CN201510830805.3A CN201510830805A CN105390258A CN 105390258 A CN105390258 A CN 105390258A CN 201510830805 A CN201510830805 A CN 201510830805A CN 105390258 A CN105390258 A CN 105390258A
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Abstract
The invention relates to an E turn insulation class 220kV transformer. The transformer comprises a winding and an iron core, wherein a lead wire insulation part of the winding adopts heat-resistant clupak paper; the lead wire insulation part of the winding is wrapped with three layers; the innermost layer adopts an overlapped lapping mode, the lapping size is 2-4mm, and wrapping paper adopts imported Munksjo heat-resistant paper; the middle layer adopts a homodromous lapping and general butting lapping mode, and wrapping paper adopts the imported Munksjo heat-resistant paper; and the outermost layer adopts the overlapped lapping mode, the lapping size is 2-4mm, and wrapping paper adopts the imported Munksjo heat-resistant paper. According to the transformer, through material change and process improvement, the turn insulation class of a 220kV power transformer is improved to the E class for the first time, namely, 120 DEG C, and the overload operation capability and short-circuit thermal stability resistance of the transformer can be effectively improved.
Description
Technical field
The present invention relates to transformer technology field, be specifically related to a kind of E level turn insulation 220kV transformer.
Background technology
China's oil-immersed power transformer thermal endurance class is A level, namely 105 DEG C, transformer overload serviceability and the thermally-stabilised ability of Short Circuit withstand poor, the demand of production application can not be met.
Summary of the invention
For the problems referred to above, the present invention obtains a kind of running overload ability and the thermally-stabilised ability of Short Circuit withstand good E level turn insulation 220kV transformer by material altering, process modification.
For solving the problem, the technical scheme that the present invention takes is: a kind of E level turn insulation 220kV transformer, comprise the winding conducting wire insulation described in it of winding and iron core and adopt heat-resisting micro-wadding, three layers of wrapping are carried out in winding conducting wire insulation, innermost layer is lap wound packet mode of attaching most importance to, overlap joint 2mm-4mm, bag paper is the heat-resisting paper of import Ming Shike; Middle level is the wrapped mode of wrapped in the same way common docking, and bag paper is the heat-resisting paper of import Ming Shike; Outermost one deck is attached most importance to lap wound packet mode, and overlap joint 2mm-4mm, bag paper is the heat-resisting paper of import Ming Shike.Winding conducting wire insulation is changed to the heat-resisting micro-wadding of import (E class F insulation paper) by common high-density paper (A class F insulation paper), improves the technological measures such as winding thrust, cushion block compression ratio, stoving process simultaneously.
After winding technique completes, thrust is by 3N/mm
2, be improved to 3.5N/mm
2, cushion block compression ratio is improved to 8.5% by 10%, and winding adopts meteorological drying chamber dry.
By above-mentioned improvement, invent a kind of E level turn insulation 220kV transformer, oil-immersed power transformer temperature capacity is significantly improved.
220kV power transformer turn insulation thermal endurance class is brought up to E level, namely 120 DEG C by material altering and process modification by the present invention first, effectively can improve transformer overload serviceability and the thermally-stabilised ability of Short Circuit withstand.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
Embodiment
A kind of E level turn insulation 220kV transformer, comprise winding and iron core, described winding conducting wire insulation adopts heat-resisting micro-wadding, and three layers of wrapping are carried out in winding conducting wire insulation, and innermost layer is lap wound packet mode of attaching most importance to, overlap joint 2mm-4mm, and bag paper is the heat-resisting paper of import Ming Shike; Middle level is the wrapped mode of wrapped in the same way common docking, and bag paper is the heat-resisting paper of import Ming Shike; Outermost one deck is attached most importance to lap wound packet mode, and overlap joint 2mm-4mm, bag paper is the heat-resisting paper of import Ming Shike.After winding technique completes, thrust is 3.5N/mm
2cushion block compression ratio is 8.5%, and winding adopts meteorological drying chamber dry.
Claims (4)
1. an E level turn insulation 220kV transformer, comprise winding and iron core is characterized in that: described winding conducting wire insulation adopts heat-resisting micro-wadding, and three layers of wrapping are carried out in winding conducting wire insulation, and innermost layer is lap wound packet mode of attaching most importance to, overlap joint 2mm-4mm, bag paper is the heat-resisting paper of import Ming Shike; Middle level is the wrapped mode of wrapped in the same way common docking, and bag paper is the heat-resisting paper of import Ming Shike; Outermost one deck is attached most importance to lap wound packet mode, and overlap joint 2mm-4mm, bag paper is the heat-resisting paper of import Ming Shike.
2. E level turn insulation 220kV transformer according to claim 1, is characterized in that: after winding technique completes, thrust is 3.5N/mm
2.
3. E level turn insulation 220kV transformer according to claim 1, is characterized in that: cushion block compression ratio is 8.5%.
4. E level turn insulation 220kV transformer according to claim 1, is characterized in that: winding adopts meteorological drying chamber dry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510830805.3A CN105390258A (en) | 2015-11-25 | 2015-11-25 | E turn insulation class 220kV transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510830805.3A CN105390258A (en) | 2015-11-25 | 2015-11-25 | E turn insulation class 220kV transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105390258A true CN105390258A (en) | 2016-03-09 |
Family
ID=55422439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510830805.3A Pending CN105390258A (en) | 2015-11-25 | 2015-11-25 | E turn insulation class 220kV transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105390258A (en) |
Citations (11)
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|---|---|---|---|---|
| JP2001230113A (en) * | 2000-02-14 | 2001-08-24 | Shinko Electric Co Ltd | Heat-resistant insulated coil |
| CN201166998Y (en) * | 2007-08-24 | 2008-12-17 | 上海杨行铜材有限公司 | Transposition conductor for PET polyester film |
| CN201369183Y (en) * | 2009-03-17 | 2009-12-23 | 无锡环宇电磁线有限公司 | Transposition lead of polyimide sintered thin films |
| CN201402642Y (en) * | 2009-04-23 | 2010-02-10 | 上海杨行铜材有限公司 | Nomex insulating combined transposed conductor |
| CN201893142U (en) * | 2010-11-16 | 2011-07-06 | 上海申茂电磁线有限公司 | Paper covered copper round wire |
| CN202058488U (en) * | 2011-05-10 | 2011-11-30 | 上海杨行铜材有限公司 | Heatproof reinforced mesh belt binding transposed wire |
| CN202275634U (en) * | 2011-09-22 | 2012-06-13 | 无锡统力电工有限公司 | Glass fiber tape wrapped mica tape aromatic polyamide paper-wound aluminum-clad flat wire |
| CN202677886U (en) * | 2012-04-09 | 2013-01-16 | 常州中力铜业有限公司 | Transposition conducting wire |
| CN203260347U (en) * | 2013-05-25 | 2013-10-30 | 南通明光电线有限公司 | Novel high temperature resistant paper-wrapped wire used for transformers and motors |
| CN203480876U (en) * | 2013-08-02 | 2014-03-12 | 四川金瑞电工有限责任公司 | Paper-wrapped film composite wire |
| CN204496947U (en) * | 2015-03-25 | 2015-07-22 | 江苏朗顺电工电气有限公司 | A kind of large oil immersed transformer paper using copper-clad composite conductor |
-
2015
- 2015-11-25 CN CN201510830805.3A patent/CN105390258A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001230113A (en) * | 2000-02-14 | 2001-08-24 | Shinko Electric Co Ltd | Heat-resistant insulated coil |
| CN201166998Y (en) * | 2007-08-24 | 2008-12-17 | 上海杨行铜材有限公司 | Transposition conductor for PET polyester film |
| CN201369183Y (en) * | 2009-03-17 | 2009-12-23 | 无锡环宇电磁线有限公司 | Transposition lead of polyimide sintered thin films |
| CN201402642Y (en) * | 2009-04-23 | 2010-02-10 | 上海杨行铜材有限公司 | Nomex insulating combined transposed conductor |
| CN201893142U (en) * | 2010-11-16 | 2011-07-06 | 上海申茂电磁线有限公司 | Paper covered copper round wire |
| CN202058488U (en) * | 2011-05-10 | 2011-11-30 | 上海杨行铜材有限公司 | Heatproof reinforced mesh belt binding transposed wire |
| CN202275634U (en) * | 2011-09-22 | 2012-06-13 | 无锡统力电工有限公司 | Glass fiber tape wrapped mica tape aromatic polyamide paper-wound aluminum-clad flat wire |
| CN202677886U (en) * | 2012-04-09 | 2013-01-16 | 常州中力铜业有限公司 | Transposition conducting wire |
| CN203260347U (en) * | 2013-05-25 | 2013-10-30 | 南通明光电线有限公司 | Novel high temperature resistant paper-wrapped wire used for transformers and motors |
| CN203480876U (en) * | 2013-08-02 | 2014-03-12 | 四川金瑞电工有限责任公司 | Paper-wrapped film composite wire |
| CN204496947U (en) * | 2015-03-25 | 2015-07-22 | 江苏朗顺电工电气有限公司 | A kind of large oil immersed transformer paper using copper-clad composite conductor |
Non-Patent Citations (2)
| Title |
|---|
| 保定天威保变电气股份有限公司: "《变压器试验技术》", 31 January 2010, 中国电力出版社 * |
| 机械工业出版社: "《中国机械行业标准汇编 电线电缆卷 上》", 30 September 2012, 机械工业出版社 * |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20160309 |