CN201804688U - Three-phase oil-immersed 110kV high-capacity straight step-down silicon carbide transformer coil - Google Patents
Three-phase oil-immersed 110kV high-capacity straight step-down silicon carbide transformer coil Download PDFInfo
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- CN201804688U CN201804688U CN2010202237911U CN201020223791U CN201804688U CN 201804688 U CN201804688 U CN 201804688U CN 2010202237911 U CN2010202237911 U CN 2010202237911U CN 201020223791 U CN201020223791 U CN 201020223791U CN 201804688 U CN201804688 U CN 201804688U
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Abstract
A three-phase oil-immersed 110kV high-capacity straight step-down silicon carbide transformer coil is easy for capacity expansion and comprises an autotransformer coil, a rectifier transformer coil, a series coil, a public coil, a voltage regulating coil, an on-load switch, a high-voltage coil, a first low-voltage coil set, a second low-voltage coil set and a no-load electric reverser switch. The switching contact of the on-load switch is connected with the moving contact of the no-load electric reverser switch, the two static contacts of the no-load electric reverser switch are respectively connected with the middle and the lower end of the high-voltage coil of the rectifier transformer coil, the upper end of the high-voltage coil of the rectifier transformer coil is connected between the series coil and the public coil of the autotransformer coil, and the star point contact of the on-load switch is connected to the neutral point of the autotransformer coil. The silicon carbide transformer coil provided by utility model is suitable for the smelting of silicon carbide.
Description
Technical field
The utility model relates to a kind of transformation device, specifically is that formula carborundum transformer coil falls in three-phase oil immersion formula 110kV high-capacity direct.
Background technology
At present, formula carborundum transformer coil falls in known three-phase oil immersion formula high-capacity direct, and the no-load motor switch is connected the high-tension coil upper end, exists not enough.Voltage height on the no-load motor switch, electric current is big, needs 3 single-phase switchs, costs an arm and a leg.
Summary of the invention
No-load in the existing three-phase oil immersion formula 110kV carborundum transformer is electronic falls disconnected closing in order to overcome, and voltage height on the loaded switch, electric current are big, need with 3 single-phase switchs, and the price height, and hindered to big capacity and develop.The utility model provides a kind of three-phase oil formula 110kV high-capacity direct to fall formula carborundum transformer, when it moves at the 110kV isolated neutral, neutral point voltage, pressing 63kV considers, at this moment loaded switch voltage is 63kV, and it is 63kV also that the electronic disconnection of no-load is closed, and considers the suspension of transformer reliability of operation and rectifier transformer high tension voltage, control voltage regulation coil voltage makes the loaded switch Current Control below 400A, and at this moment loaded switch is selected three-phase CVIII-350D/63-10193W switch for use.Price is low.The voltage of each lead-in wire is also low, and the position in fuel tank is easy arrangement also, has dwindled fuel tank, has alleviated the weight of transformer oil, and reliability improves, and cost reduces about 30%.
The new solution that its technical problem that solves the utility model adopts is: by autotransformer coil, rectifier transformer coil, series coil, common winding, voltage regulation coil, loaded switch, high-tension coil, low-voltage coil
1 group, low-voltage coil
2 groups, formula carborundum transformer coil falls in the electronic three-phase oil immersion formula 110kV high-capacity direct of fall to disconnect close forming of no-load.Described loaded switch is a three-phase CVIII-350D/63-10193W switch, it is three-phase WSLII400/110-3 * 2DL switch that the electronic disconnection of described no-load is closed, the switching contact of loaded switch is connected with the electronic moving contact that falls to disconnect the pass of no-load, no-load is electronic fall to disconnect closes two fixed contacts and is connected on the centre and lower end of high-tension coil of rectifier transformer coil, on the high-tension coil of rectifier transformer coil upper end was connected between the series coil of autotransformer coil and the common winding, loaded switch asterism contact was connected on the neutral point of autotransformer coil.
The beneficial effects of the utility model are this transformer reliability of operation, fail safe raising, weight saving, saving material, cost minimizing about 30%.
Description of drawings
Fig. 1 is a structure wiring schematic diagram of the present utility model.
Among the figure: 1 autotransformer coil, 2 series coils, 3 common windings, 4, voltage regulation coil, 5, loaded switch, 6, the rectifier transformer coil, 7 high-tension coils, 8 no-loads are electronic to be fallen to disconnect and closes 9 low-voltage coils
1 group, 9 ' low-voltage coil
2 groups
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
In Fig. 1, by autotransformer coil 1, series coil 2, common winding 3, voltage regulation coil 4, loaded switch 5, rectifier transformer coil 6, high-tension coil 7, electronic disconnection of no-load closes 8, the letterweight coil
1 group9, low-voltage coil
2 groupsFormula carborundum transformer coil falls in the three-phase oil immersion formula 110kV high-capacity direct of 9 ' composition.Described loaded switch (5) is a three-phase CVIII-350D/63-10193W switch, (8) are closed in the electronic disconnection of described no-load is three-phase WSLII400/110-3 * 2DL switch, the switching contact of loaded switch (5) is connected with the electronic moving contact that falls to disconnect pass (8) of no-load, no-load is electronic fall to disconnect closes (8) two fixed contacts and is connected on the centre and lower end of high-tension coil (7) of rectifier transformer coil (6), on the high-tension coil (7) of rectifier transformer coil (6) upper end was connected between the series coil (2) of autotransformer coil (1) and the common winding (3), loaded switch (5) asterism contact was connected on the neutral point of autotransformer coil (1).
Claims (1)
1. formula carborundum transformer coil falls in a three-phase oil immersion formula 110kV high-capacity direct, by autotransformer coil, and rectifier transformer coil, series coil, common winding, voltage regulation coil, loaded switch, high-tension coil, low-voltage coil
1 group, low-voltage coil
2 groupsElectronic disconnection of no-load closed composition, it is characterized in that, described loaded switch (5) is a three-phase CVIII-350D/63-10193W switch, (8) are closed in the electronic disconnection of described no-load is three-phase WSLII400/110-3 * 2DL switch, the switching contact of loaded switch (5) is connected with the electronic moving contact that falls to disconnect pass (8) of no-load, no-load is electronic fall to disconnect closes (8) two fixed contacts and is connected on the centre and lower end of high-tension coil (7) of rectifier transformer coil (6), on the high-tension coil (7) of rectifier transformer coil (6) upper end was connected between the series coil (2) of autotransformer coil (1) and the common winding (3), loaded switch (5) asterism contact was connected on the neutral point of autotransformer coil (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202237911U CN201804688U (en) | 2010-06-04 | 2010-06-04 | Three-phase oil-immersed 110kV high-capacity straight step-down silicon carbide transformer coil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202237911U CN201804688U (en) | 2010-06-04 | 2010-06-04 | Three-phase oil-immersed 110kV high-capacity straight step-down silicon carbide transformer coil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201804688U true CN201804688U (en) | 2011-04-20 |
Family
ID=43874191
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202237911U Expired - Fee Related CN201804688U (en) | 2010-06-04 | 2010-06-04 | Three-phase oil-immersed 110kV high-capacity straight step-down silicon carbide transformer coil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201804688U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325546A (en) * | 2013-07-17 | 2013-09-25 | 国家电网公司 | Novel cake-shaped coil with neutral point voltage regulating section in middle |
| CN103680882A (en) * | 2013-12-25 | 2014-03-26 | 保定天威保变电气股份有限公司 | Self-coupling power transformer in 330kV three-phase and three-winding neutral point on-load voltage regulation mode |
-
2010
- 2010-06-04 CN CN2010202237911U patent/CN201804688U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103325546A (en) * | 2013-07-17 | 2013-09-25 | 国家电网公司 | Novel cake-shaped coil with neutral point voltage regulating section in middle |
| CN103680882A (en) * | 2013-12-25 | 2014-03-26 | 保定天威保变电气股份有限公司 | Self-coupling power transformer in 330kV three-phase and three-winding neutral point on-load voltage regulation mode |
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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: 20110420 Termination date: 20140604 |