CN103000356A - Special combined transformer for 35KV wind power - Google Patents
Special combined transformer for 35KV wind power Download PDFInfo
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- CN103000356A CN103000356A CN2012105557883A CN201210555788A CN103000356A CN 103000356 A CN103000356 A CN 103000356A CN 2012105557883 A CN2012105557883 A CN 2012105557883A CN 201210555788 A CN201210555788 A CN 201210555788A CN 103000356 A CN103000356 A CN 103000356A
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- pressure winding
- transformer
- voltage winding
- wind
- insulating paper
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Abstract
The invention relates to the technical field of power transmission equipment, and particularly relates to a special combined transformer for 35KV wind power. The special combined transformer comprises an iron core, a low-voltage winding and a high-voltage winding, wherein the turn insulation thickness of a copper wire on the low-voltage winding is 0.2-0.4mm, the turn insulation thickness of a copper wire on the high-voltage winding is 0.2-0.4mm, and latticed and glued insulating paper are arranged between the layers of the low-voltage winding and between the layers of the high-voltage winding. The special combined transformer has the advantages that by adoption of the structure, after the longitudinal insulation is adjusted, the test for frequency-doubling voltage resistance, industrial-frequency voltage resistance and lightning impulse can be born; and simultaneously due to reduction of the longitudinal insulation size, the geometric dimension of the transformer is greatly reduced, the manufacturing cost of the transformer is reduced, the loss for no load and load is reduced, and the performance of a product is improved.
Description
Technical field
The present invention relates to the transmission facility technical field, be specifically related to a kind of 35KV wind-powered electricity generation special-purpose combined type transformer.
Background technology
China's wind resource is very abundant, and the annual of Wind turbine utilizes hourage to rank forefront at home, and the development wind power generation has advantageous weather conditions.From 2005, wind power generation obtained rapidly development as a kind of production of energy mode of cleaning in China.Because the factors such as wind-powered electricity generation special-purpose combined type transformer is multiple toward northeast, northwest and the North China, and far away, road conditions are not good are had higher requirement to the total quality of combined transformer.
Because the traditional transformer design is reasonable not, its volume is large, Heavy Weight, thereby has increased the manufacturing cost of transformer, increases empty, load loss, and has reduced properties of product.
Summary of the invention
The purpose of this invention is to provide that a kind of dielectric strength is good, temperature resistant grade is high, reduce the transformer manufacturing cost, and the 35KV wind-powered electricity generation special-purpose combined type transformer of enhancing product performance.
In order to solve the existing problem of background technology, the present invention is by the following technical solutions: a kind of 35KV wind-powered electricity generation special-purpose combined type transformer, comprise iron core, low pressure winding and high pressure winding, the turn insulation thickness of copper cash is 0.2～0.4mm on the described low pressure winding, the turn insulation thickness of copper cash is 0.2～0.4mm on the described high pressure winding, and the interlayer of described low pressure winding and described high pressure winding is equipped with a diamond dotted insulating paper.
Further, the thickness of described diamond dotted insulating paper is 0.08～0.12mm.
Further, the temperature resistant grade of described diamond dotted insulating paper is the F level.
The present invention has following beneficial effect: a kind of 35KV wind-powered electricity generation special-purpose combined type transformer of the present invention, wherein, the turn insulation thickness of copper cash is 0.2～0.4mm on the low pressure winding, the turn insulation thickness of copper cash is 0.2～0.4mm on the high pressure winding, and is equipped with a diamond dotted insulating paper at the interlayer of low pressure winding and high pressure winding; The present invention adopts said structure, after longitudinal insulation is adjusted, can bear equally that frequency multiplication is withstand voltage, industrial frequency withstand voltage and lightning impulse test, the physical dimension that reduces greatly to have dwindled transformer of while longitudinal insulation size, reduced the manufacturing cost of transformer, reduce empty, load loss, improved properties of product.
Embodiment
The below is further described in detail present embodiment.
A kind of 35KV wind-powered electricity generation special-purpose combined type transformer of the present invention, comprise iron core, low pressure winding and high pressure winding, the turn insulation thickness of copper cash is 0.2～0.4mm on the described low pressure winding, the turn insulation thickness of copper cash is 0.2～0.4mm on the described high pressure winding, in the present embodiment, the turn insulation thickness of copper cash is preferably 0.3mm on described low pressure winding and the high pressure winding, because 3150KVA and following middle-size and small-size power transformer, one turn voltage is 31V to the maximum, its induced voltage is 62V, be far smaller than the withstand voltage 10KV of the thick turn insulation of 0.45mm, and the maximum impact voltage of 35KV level product turn insulation is 0.85KV, press oil duct maximum impact gradient 30%, minimum turn number 700 circles calculate, 200KV*0.3/700=0.85KV much smaller than the thick turn insulation impulse withstand voltage of 0.45mm 20KV, the turn insulation thickness of copper cash can be reduced to 0.3mm by traditional 0.45mm on described present embodiment mesolow winding and the high pressure winding; And the interlayer of described low pressure winding and described high pressure winding is equipped with a diamond dotted insulating paper, and the thickness of described diamond dotted insulating paper is 0.08～0.12mm, in the present embodiment, the thickness of diamond dotted insulating paper is preferably 0.1mm, and the temperature resistant grade of described diamond dotted insulating paper is the F level; Adopt a diamond dotted insulating paper to replace traditional thick insulating point gummed paper of five 0.08mm in the present embodiment, after its longitudinal insulation is adjusted, can bear equally that frequency multiplication is withstand voltage, industrial frequency withstand voltage and lightning impulse test.
Explanation is at last, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, other modifications that those of ordinary skills make technical scheme of the present invention or be equal to replacement, only otherwise break away from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of the claim scope of the present invention.
Claims (3)
1. 35KV wind-powered electricity generation special-purpose combined type transformer, comprise iron core, low pressure winding and high pressure winding, it is characterized in that, the turn insulation thickness of copper cash is 0.2～0.4mm on the described low pressure winding, the turn insulation thickness of copper cash is 0.2～0.4mm on the described high pressure winding, and the interlayer of described low pressure winding and described high pressure winding is equipped with a diamond dotted insulating paper.
2. a kind of 35KV wind-powered electricity generation special-purpose combined type transformer according to claim 1 is characterized in that the thickness of described diamond dotted insulating paper is 0.08～0.12mm.
3. a kind of 35KV wind-powered electricity generation special-purpose combined type transformer according to claim 1 is characterized in that the temperature resistant grade of described diamond dotted insulating paper is the F level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105557883A CN103000356A (en) | 2012-12-20 | 2012-12-20 | Special combined transformer for 35KV wind power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105557883A CN103000356A (en) | 2012-12-20 | 2012-12-20 | Special combined transformer for 35KV wind power |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103000356A true CN103000356A (en) | 2013-03-27 |
Family
ID=47928814
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105557883A Pending CN103000356A (en) | 2012-12-20 | 2012-12-20 | Special combined transformer for 35KV wind power |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103000356A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2814637Y (en) * | 2005-07-19 | 2006-09-06 | 福州天宇电气股份有限公司 | Electric transformer |
| CN201229836Y (en) * | 2008-07-15 | 2009-04-29 | 沈阳沈变中型变压器有限责任公司 | Low voltage winding construction for high voltage large capacity electric power transformer |
| CN101901676A (en) * | 2009-05-25 | 2010-12-01 | 上海飞晶电气股份有限公司 | Method for improving insulativity of tapping switch of non-crystaline amorphousmetal transformer |
| CN201673783U (en) * | 2010-05-18 | 2010-12-15 | 苏州金山门变压器有限公司 | Oil-immersed on load capacity-regulated transformer |
-
2012
- 2012-12-20 CN CN2012105557883A patent/CN103000356A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2814637Y (en) * | 2005-07-19 | 2006-09-06 | 福州天宇电气股份有限公司 | Electric transformer |
| CN201229836Y (en) * | 2008-07-15 | 2009-04-29 | 沈阳沈变中型变压器有限责任公司 | Low voltage winding construction for high voltage large capacity electric power transformer |
| CN101901676A (en) * | 2009-05-25 | 2010-12-01 | 上海飞晶电气股份有限公司 | Method for improving insulativity of tapping switch of non-crystaline amorphousmetal transformer |
| CN201673783U (en) * | 2010-05-18 | 2010-12-15 | 苏州金山门变压器有限公司 | Oil-immersed on load capacity-regulated transformer |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130327 |