CN102779633A - Combined transformer - Google Patents
Combined transformer Download PDFInfo
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- CN102779633A CN102779633A CN2012102369670A CN201210236967A CN102779633A CN 102779633 A CN102779633 A CN 102779633A CN 2012102369670 A CN2012102369670 A CN 2012102369670A CN 201210236967 A CN201210236967 A CN 201210236967A CN 102779633 A CN102779633 A CN 102779633A
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- voltage coil
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- electrostatic shielding
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Abstract
The invention discloses a combined transformer. The combined transformer structurally comprises a transformer cabinet body, a low-voltage coil, a high-voltage coil and a high-voltage wire outlet, wherein a grounding electrostatic screen is arranged between the low-voltage coil and the high-voltage coil; and a high-voltage coil end part electrostatic screen is arranged on the end part of the high-voltage coil. The transformer cabinet body is made of stainless steel plates of 2.5mm, outer surfaces of which are coated with corrosion resistant and abrasion resistant materials after being de-rusted through pickling phosphorization. The grounding electrostatic screen and the high-voltage end part electrostatic screen are both made of brass plates of 0.3mm. The electrostatic screen is added on the end part of the high-voltage coil, so that the end capacitance of a winding is increased, thereby effectively improving the capacity of the winding for preventing thunder and various over-voltage impulses; moreover, the grounding electrostatic screen between the high-voltage coil and the low-voltage coil can effectively prevent or reduce the transmission of harmonic wave between the high-voltage coil and the low-voltage coil, thereby improving the transmission quality of a power grid.
Description
Technical field
The present invention relates to a kind of combined transformer, especially a kind of combined transformer that possesses anti-thunderbolt and can fall harmonic wave.
Background technology
Rapid raising along with national economy fast development and living standards of the people; Demand to electric power is increasing; Existing thermoelectricity, water power can not satisfy the demands; Then because its fail safe is under suspicion, wind power generation obtains fast development as a kind of clean energy resource of energy-conserving and environment-protective to the nuclear power that rises recent years.This has higher requirement for the wind power generation combined transformer; Wind power plant is generally all built the area of strong wind throughout the year such as desert, mountain pass or sea in, and the many thunders of environment, rainy, many harsh weather are so the wind power generation combined transformer will have the ability of very high anti lightning and the impact of various overvoltage; And because its residing adverse circumstances; The integral body of transformer is also wear-resisting, and is corrosion-resistant, can operation safely and reliably in various rugged environments.
Present used for wind power generation combined transformer high pressure is the 35KV level normally, and the high pressure winding is generally layered structure, and this structure winding lightning impulse resistant ability is relatively poor.And because the electricity that sends of present wind-driven generator will pass through the output of just being incorporated into the power networks behind the commutation inversion, understand the generation high order harmonic component in the commutation inversion process, seriously influence the transmission quality and the useful life of electrical network.
Summary of the invention
Goal of the invention: to the deficiency of prior art, we grope through long-term practice aborning, have created a kind of combined variable pressure device.
Technical scheme: in order to realize the foregoing invention purpose, the technical scheme that the present invention adopted is: the key position at transformer is installed electrostatic shielding, and the cabinet outer surface of transformer is carried out wear-resisting, corrosion-resistance treatment.The structure that the harmonic wave combined transformer falls in this anti-thunderbolt comprises transformer cabinet, inner low-voltage coil and high-tension coil and the high-voltage terminal head of transformer cabinet; Be provided with a ground connection electrostatic shielding between said low-voltage coil and the high-tension coil, the end of said high-tension coil is provided with a high-tension coil end electrostatic shielding.Ground connection electrostatic shielding two ends are provided with insulated coil.Said transformer cabinet adopts the 2.5mm corrosion resistant plate to make, and outer surface is handled with corrosion-resistant, wear-resisting material plastic-blasting after the acid washing phosphorization rust cleaning, and lacquer coat thickness is greater than 0.3mm.Said ground connection electrostatic shielding and high-tension coil end electrostatic shielding all adopt the 0.3mm brass sheet to make.
Beneficial effect: the present invention compared with prior art; Its beneficial effect is: 1, place an electrostatic shielding in the high-tension coil end; Increased winding end electric capacity, improve the field intensity of end, effectively improve the ability that anti lightning and the various overvoltage of winding are impacted; 2, between the high and low pressure coil, place the electrostatic shielding of ground connection, effectively prevention or reduction harmonic wave transmit between high-voltage coil and low-voltage coil, to a side start protection effect of non-generation harmonic wave, improve the transmission quality of electrical network; 3, the transformer monolithic case is carried out wear-resisting, corrosion-resistance treatment, prolonged the useful life of cabinet.
Description of drawings
Accompanying drawing is the structural representation of a kind of combined variable pressure device of the present invention.
Embodiment
Below in conjunction with accompanying drawing, through a most preferred embodiment, technical scheme of the present invention is elaborated, but protection scope of the present invention is not limited to said embodiment.
As shown in the figure; A kind of combined variable pressure device; Its structure comprises low-voltage coil 1 and the high-tension coil 4 and the high-voltage terminal head 5 of transformer cabinet 6, transformer cabinet 6 inside, is provided with a ground connection electrostatic shielding 2 between said low-voltage coil 1 and the high-tension coil 4, and ground connection electrostatic shielding 2 two ends are provided with insulated coil.The end of high-tension coil 4 is provided with a high-tension coil end electrostatic shielding 3.Transformer cabinet 6 adopts the 2.5mm corrosion resistant plate to make, and outer surface is handled with corrosion-resistant, wear-resisting material plastic-blasting after the acid washing phosphorization rust cleaning, and lacquer coat thickness is greater than 0.3mm.
Said ground connection electrostatic shielding 2 all adopts the 0.3mm brass sheet to make with high-tension coil end electrostatic shielding 3.
The electric screen lead-out wire of high-tension coil end electrostatic shielding 3 and high-voltage terminal head 5 are connected together during real work, and the electric screen lead-out wire of the ground connection electrostatic shielding 2 between the high-low pressure is then wanted reliable ground.In order to ensure service quality, after low-voltage coil 1 coiling is accomplished, in its appearance around certain thickness stay chain and cardboard, guarantee electrical distance after, coiling ground connection electrostatic shielding 2, two ends add insulating end ring.When carrying out the general assembly of electric screen lead-out wire, the folder of reliable and ground connection to be connected together, after 2 coilings of ground connection electrostatic shielding are accomplished; Continue certain thickness stay chain of coiling and cardboard; The square ring that adds high pressure, the electrostatic shielding 3 in end winding coiling high-tension coil end then, other are local levels up with the stay curtain; The coiling high-tension coil 4 again, and the electric screen lead-out wire and the high-voltage terminal head 5 of high-tension coil end electrostatic shielding 3 are connected together.
Claims (4)
1. combined variable pressure device; Its structure comprises transformer cabinet (6), inner low-voltage coil (1) and high-tension coil (4) and the high-voltage terminal head (5) of said transformer cabinet (6); It is characterized in that: be provided with a ground connection electrostatic shielding (2) between said low-voltage coil (1) and the high-tension coil (4), said high-tension coil (4) end is provided with a high-tension coil end electrostatic shielding (3).
2. a kind of combined variable pressure device according to claim 1 is characterized in that: said ground connection electrostatic shielding (2) two ends are provided with insulated coil.
3. a kind of combined variable pressure device according to claim 1; It is characterized in that: said transformer cabinet (6) adopts the 2.5mm corrosion resistant plate to make; Outer surface is handled with corrosion-resistant, wear-resisting material plastic-blasting after the acid washing phosphorization rust cleaning, and lacquer coat thickness is greater than 0.3mm.
4. according to claim 1 and the described a kind of combined variable pressure device of claim 2, it is characterized in that: said ground connection electrostatic shielding (2) and high-tension coil end electrostatic shielding (3) all adopt the 0.3mm brass sheet to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102369670A CN102779633A (en) | 2012-07-10 | 2012-07-10 | Combined transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012102369670A CN102779633A (en) | 2012-07-10 | 2012-07-10 | Combined transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102779633A true CN102779633A (en) | 2012-11-14 |
Family
ID=47124510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012102369670A Pending CN102779633A (en) | 2012-07-10 | 2012-07-10 | Combined transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102779633A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104282423A (en) * | 2014-09-30 | 2015-01-14 | 卧龙电气集团股份有限公司 | Power transformer with dual electrostatic screens |
| CN107680780A (en) * | 2017-10-24 | 2018-02-09 | 山东达驰电气有限公司 | A kind of loop construction of transformer |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04306814A (en) * | 1991-04-03 | 1992-10-29 | Toshiba Corp | Transformer |
| CN202839267U (en) * | 2012-04-17 | 2013-03-27 | 常熟市森源电气科技有限公司 | Anti-thunderstrike harmonic reduction combined type transformer |
-
2012
- 2012-07-10 CN CN2012102369670A patent/CN102779633A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04306814A (en) * | 1991-04-03 | 1992-10-29 | Toshiba Corp | Transformer |
| CN202839267U (en) * | 2012-04-17 | 2013-03-27 | 常熟市森源电气科技有限公司 | Anti-thunderstrike harmonic reduction combined type transformer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104282423A (en) * | 2014-09-30 | 2015-01-14 | 卧龙电气集团股份有限公司 | Power transformer with dual electrostatic screens |
| CN107680780A (en) * | 2017-10-24 | 2018-02-09 | 山东达驰电气有限公司 | A kind of loop construction of transformer |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C05 | Deemed withdrawal (patent law before 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121114 |