CN201845649U - Oil-immersed dual-voltage on-load voltage regulating transformer - Google Patents
Oil-immersed dual-voltage on-load voltage regulating transformer Download PDFInfo
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- CN201845649U CN201845649U CN2010205636862U CN201020563686U CN201845649U CN 201845649 U CN201845649 U CN 201845649U CN 2010205636862 U CN2010205636862 U CN 2010205636862U CN 201020563686 U CN201020563686 U CN 201020563686U CN 201845649 U CN201845649 U CN 201845649U
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Abstract
The utility model discloses an oil-immersed dual-voltage on-load voltage regulating transformer, which comprises an oil tank and a three-phase transformer arranged in the oil tank. A serial-parallel switch and an on-load tap switch are arranged on the three-phase of the transformer, a winding set is arranged outside an iron core of the transformer and comprises a low-voltage coil and a high-voltage coil arranged outside the low-voltage coil, the high-voltage coil comprises an upper high-voltage coil and a lower high-voltage coil which are arranged axially, inlet and outlet leads of the upper high-voltage coil and the lower high-voltage coil are respectively connected with the serial-parallel switch, and taps of the upper high-voltage coil and lower high-voltage coil are respectively connected with the on-load tap switch. The oil-immersed dual-voltage on-load voltage regulating transformer can be used for a 10Kv power distribution system and a 20Kv power distribution system, enables users to regulate voltage online, can guarantee voltage quality, reduce equipment accidents and improve reliability of power supplying, and has the advantages of reasonable structure, stable performance, low noise and capacity of saving energy.
Description
Technical field
The utility model relates to a kind of transformer, what be specifically related to is the two voltage on-load tap-changing transformers of a kind of oil immersed type.
Background technology
Along with the construction of national urbanization, power load is in rapid increase, and 10KV distribution voltage can not satisfy the demand of electricity consumption.And can increase conveying capacity by improving the distribution electric pressure, and enlarge supply district, reduce network loss, improve electric network composition, be one of effective way that improves the quality of power supply, so country begins to promote the 20KV distribution network in recent years.But existing distribution line is 10KV mostly, and newly-built 20KV distribution network systems has just caused very big waste for the 10KV distribution network systems.Owing to operational mode in the electric power system is ever-changing, each node voltage is all different in addition, and the user is also different to the requirement of voltage.
The utility model content
At the deficiency that exists on the prior art, the utility model purpose is to be to provide a kind of can be used for the 10KV distribution system, the two voltage on-load tap-changing transformers of oil immersed type that also can be used for the 20KV distribution system, and the user can be online to its pressure regulation, can guarantee quality of voltage and reduce equipment breakdown, improve the reliability of power supply.
To achieve these goals, the utility model is to realize by the following technical solutions:
The utility model comprises fuel tank and is arranged on the interior three-phase transformer of fuel tank, the three-phase of transformer is provided with series parallel switch and on load tap changer, the iron core of transformer is provided with winding outward, winding comprises low-voltage coil and is arranged on the outer high-tension coil of low-voltage coil, high-tension coil comprises last high-tension coil and the following high-tension coil of arranging vertically, the turnover lead-in wire of last high-tension coil and following high-tension coil is connected on the series parallel switch, and the shunting tap of last high-tension coil and following high-tension coil also is connected on the on load tap changer.Realize online on-load voltage regulation by on load tap changer; The turnover lead-in wire of last high-tension coil and following high-tension coil is connected on the series parallel switch, make that going up high-tension coil optionally is in state in parallel or series connection with following high-tension coil, when last high-tension coil was in state in parallel with following high-tension coil, transformer worked in 10KV; When last high-tension coil and following high-tension coil were in series connection, transformer worked in 20KV.
Above-mentioned iron core is formed by stacking by grain-oriented cold-reduced silicon sheet.No-load loss is very low, and performance reaches the level of 27ZH110 silicon steel sheet, and magnetic is close to be controlled at below the 1.65T, and iron loss is low, and noise is low.
Above-mentionedly go up between high-tension coil and the following high-tension coil, between last high-tension coil and the low-voltage coil, between time high-tension coil and the low-voltage coil and between low-voltage coil and the iron core insulating barrier is set all.
The utility model is rational in infrastructure, stable performance, noise are low, energy-conservation; The turnover lead-in wire of last high-tension coil and following high-tension coil is connected on the series parallel switch, the shunting tap of last high-tension coil and following high-tension coil is connected on the on load tap changer, conversion by series parallel switch can be used for the 10KV distribution system, also can be used for the 20KV distribution system; On load tap changer is used for online adjustment voltage deviation, can guarantee quality of voltage and reduce equipment breakdown, improves the reliability of power supply.
Description of drawings
Describe the utility model in detail below in conjunction with the drawings and specific embodiments;
Fig. 1 is the utility model high-voltage connection principle schematic (towards the high-pressure side);
Fig. 2 is the utility model low pressure connection principle schematic diagram (towards low-pressure side);
Fig. 3 is the wherein longitudinal sectional view of a phase of the utility model transformer;
Fig. 4 is the wherein attached view of a phase of the utility model transformer.
Embodiment
For technological means, creation characteristic that the utility model is realized, reach purpose and effect is easy to understand, below in conjunction with embodiment, further set forth the utility model.
Referring to Fig. 1 to Fig. 4, the utility model comprises fuel tank and is arranged on the interior three-phase transformer of fuel tank, the three-phase of transformer is provided with series parallel switch 5 and on load tap changer 6, the iron core 4 outer windings that are provided with of transformer, and iron core 4 adopts the grain-oriented cold-reduced silicon sheet of high-quality to be formed by stacking, be divided into stem stem, return yoke, upper yoke and four parts of lower yoke, no-load loss is very low, and performance reaches the level of 27ZH110 silicon steel sheet, and magnetic is close to be controlled at below the 1.65T, iron loss is low, and noise is low.Winding comprises low-voltage coil 3 and high-tension coil, high-tension coil comprises high-tension coil 1 and following high-tension coil 2, and low-voltage coil 3 is enclosed within on the stem stem at interior, close iron core 4, high-tension coil is enclosed within outside the low-voltage coil 3, and last high-tension coil 1 and following high-tension coil 2 are arranged vertically.And between last high-tension coil 1 and the following high-tension coil 2, down between high-tension coil 2 and the low-voltage coil 3, between last high-tension coil 1 and the low-voltage coil 3 and between low-voltage coil 3 and the iron core 4 insulating barrier is set all.
Referring to Fig. 1, transformer of the present utility model is a three-phase transformer, the top ABC of three-phase transformer, end is represented with XYZ, the last high-tension coil 1 of X phase is gone up mutually with the X that the turnover of following high-tension coil 2 lead-in wire is connected to series parallel switch 5, the last high-tension coil 1 of Y phase is gone up mutually with the Y that the turnover of following high-tension coil 2 lead-in wire is connected to series parallel switch 5, the last high-tension coil 1 of Z phase is gone up mutually with the Z that the turnover of following high-tension coil 2 lead-in wire is connected to series parallel switch 5, the connected mode that series parallel switch 5 is used for changing high-tension coil 1 and following high-tension coil 2 realizes the requirement of two kinds of different electric pressures.
When the X of the last high-tension coil 1 of X in mutually end is connected with the A ' end of following high-tension coil 2, the Y end of the last high-tension coil 1 of Y in mutually is connected with the B ' end of following high-tension coil 2, the Z end of the last high-tension coil 1 of Z in mutually is connected with the C ' end of following high-tension coil 2, go up high-tension coil 1 in the transformer and be in series with following high-tension coil 2, transformer works in 20KV; After the slide block of series parallel switch 5 moves, make the A end of the last high-tension coil 1 during X mutually be connected with the A ' end of following high-tension coil 2, the X end of last high-tension coil 1 is connected with the X ' end of following high-tension coil 2, the B end of the last high-tension coil 1 of Y in mutually is connected with the B ' end of following high-tension coil 2, the Y end of last high-tension coil 1 is connected with the Y ' end of following high-tension coil 2, the C end of the last high-tension coil 1 of Z in mutually is connected with the C ' end of following high-tension coil 2, the Z end of last high-tension coil 1 is connected with the Z ' end of following high-tension coil 2, it is in parallel with following high-tension coil 2 then to go up high-tension coil 1, and transformer works in 10KV.
Two voltage transformers in the utility model can be operated in 10KV or 20KV, satisfy present 10KV power supply fully, plan the regional demand of 20KV power supply in the future, need not to change transformer or transformer is changed, and transformer adaptive capacity of the present utility model is strong.
The last high-tension coil 1 of X phase is gone up mutually with the X that the shunting tap of following high-tension coil 2 is connected on load tap changer 6, the last high-tension coil 1 of Y phase is gone up mutually with the Y that the shunting tap of following high-tension coil 2 is connected on load tap changer 6, the last high-tension coil 1 of Z phase is gone up mutually with the Z that the shunting tap of following high-tension coil 2 is connected on load tap changer 6, on load tap changer 6 is used for online adjustment voltage deviation, guarantee quality of voltage and reduce equipment breakdown, improve power supply reliability.
On load tap changer 6 is in order to switch the device of shunting tap, the some taps of shunting tap for drawing from the high-tension coil of transformer, on load tap changer 6 is regulated by the number of turn that changes high-tension coil, slide block in the slip on load tap changer 6, gear in the high-tension coil is adjusted accordingly, and realizes the adjustment of voltage.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in the foregoing description and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (3)
1. two voltage on-load tap-changing transformers of an oil immersed type, comprise fuel tank and be arranged on the interior three-phase transformer of fuel tank, it is characterized in that, the three-phase of described transformer is provided with series parallel switch (5) and on load tap changer (6), the outer winding that is provided with of the iron core of described transformer (4), described winding comprises low-voltage coil (3) and is arranged on the outer high-tension coil of low-voltage coil (3), described high-tension coil comprises last high-tension coil (1) and the following high-tension coil of arranging vertically (2), the described turnover lead-in wire of going up high-tension coil (1) and following high-tension coil (2) is connected on the series parallel switch (5), and the shunting tap of last high-tension coil (1) and following high-tension coil (2) is connected on the on load tap changer (6).
2. the two voltage on-load tap-changing transformers of oil immersed type according to claim 1 is characterized in that described iron core (4) is formed by stacking by grain-oriented cold-reduced silicon sheet.
3. the two voltage on-load tap-changing transformers of oil immersed type according to claim 1 and 2, it is characterized in that, describedly go up between high-tension coil (1) and the following high-tension coil (2), between last high-tension coil (1) and the low-voltage coil (3), between time high-tension coil (2) and the low-voltage coil (3) and between low-voltage coil (3) and the iron core (4) insulating barrier is set all.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205636862U CN201845649U (en) | 2010-10-15 | 2010-10-15 | Oil-immersed dual-voltage on-load voltage regulating transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205636862U CN201845649U (en) | 2010-10-15 | 2010-10-15 | Oil-immersed dual-voltage on-load voltage regulating transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201845649U true CN201845649U (en) | 2011-05-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205636862U Expired - Lifetime CN201845649U (en) | 2010-10-15 | 2010-10-15 | Oil-immersed dual-voltage on-load voltage regulating transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201845649U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102468043A (en) * | 2011-12-01 | 2012-05-23 | 厦门纳美特新材料科技有限公司 | Load transfer distribution transformer |
| CN102568788A (en) * | 2012-03-01 | 2012-07-11 | 广西柳州特种变压器有限责任公司 | Single-body transformer having novel wiring structure |
| CN106653330A (en) * | 2016-12-01 | 2017-05-10 | 保定天威保变电气股份有限公司 | Voltage regulating mode connection structure for novel autotransformer |
| CN106935385A (en) * | 2017-04-25 | 2017-07-07 | 国家电网公司 | A kind of power transformer load tap changer connected mode |
| CN112133547A (en) * | 2020-09-16 | 2020-12-25 | 山东电工电气集团智能电气有限公司 | Dual-power oil-immersed distribution transformer |
-
2010
- 2010-10-15 CN CN2010205636862U patent/CN201845649U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102468043A (en) * | 2011-12-01 | 2012-05-23 | 厦门纳美特新材料科技有限公司 | Load transfer distribution transformer |
| CN102468043B (en) * | 2011-12-01 | 2014-09-24 | 厦门纳美特新材料科技有限公司 | Load transfer distribution transformer |
| CN102568788A (en) * | 2012-03-01 | 2012-07-11 | 广西柳州特种变压器有限责任公司 | Single-body transformer having novel wiring structure |
| CN102568788B (en) * | 2012-03-01 | 2015-01-21 | 广西柳州特种变压器有限责任公司 | Single-body transformer |
| CN106653330A (en) * | 2016-12-01 | 2017-05-10 | 保定天威保变电气股份有限公司 | Voltage regulating mode connection structure for novel autotransformer |
| CN106935385A (en) * | 2017-04-25 | 2017-07-07 | 国家电网公司 | A kind of power transformer load tap changer connected mode |
| CN112133547A (en) * | 2020-09-16 | 2020-12-25 | 山东电工电气集团智能电气有限公司 | Dual-power oil-immersed distribution transformer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110525 |