CN202948829U - Three-winding on-load voltage regulation power transformer with excitation-free voltage regulation in medium voltage - Google Patents
Three-winding on-load voltage regulation power transformer with excitation-free voltage regulation in medium voltage Download PDFInfo
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- CN202948829U CN202948829U CN 201220718890 CN201220718890U CN202948829U CN 202948829 U CN202948829 U CN 202948829U CN 201220718890 CN201220718890 CN 201220718890 CN 201220718890 U CN201220718890 U CN 201220718890U CN 202948829 U CN202948829 U CN 202948829U
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Abstract
The utility model relates to a three-winding on-load voltage regulation power transformer with excitation-free voltage regulation in medium voltage and belongs to the technical field of transformers. According to the technical scheme, the three-winding on-load voltage regulation power transformer comprises an iron core (1), a low-voltage coil (2), a medium-voltage coil (3), a high-voltage coil (4), a high-voltage voltage regulating coil (5) and medium-voltage voltage regulating coils (6), wherein the iron core is concentrically sheathed with the low-voltage coil, the medium-voltage coil, the high-voltage coil and a voltage regulating coil from inside to outside, and the voltage regulating coil is composed of the high-voltage voltage regulating coil at the middle part and the medium-voltage voltage regulating coils at the two ends. According to the three-winding on-load voltage regulation power transformer, a medium-voltage tapped section is taken as an independent voltage regulation coil and placed at the two ends of the high-voltage voltage regulating coil, effective spaces at high-voltage voltage regulating ends are fully utilized, and a distance between the medium-voltage coil and the low-voltage coil is also shortened, so that filling rate of a transformer coil is increased, material cost of a transformer is reduced, ampere-turn balance between coils is improved, and the whole short-circuit resisting capacity of the transformer is enhanced.
Description
Technical field
The utility model relates to a kind of three winding loaded voltage-regulating electric transformers of middle pressure zone non-excitation pressure adjustment, belongs to the transformer technology field.
Background technology
At present, several line cakes that three winding loaded voltage-regulating electric transformers are all pressure windings in conduct for middle pressure pressure regulation part are placed on the end of middle pressure winding, and a minute wiring therefrom presses the winding inner diameter side to draw, and makes the coil winding difficulty.In the mill, press the distance of winding and low pressure winding in must increasing for the requirement of satisfying minute wiring outlet, so reduced the filling rate of Transformer Winding, increased material cost.Press the appearance of tap section to make between height, middle pressure simultaneously, in, the bad control of the ampere-turn equilibrium of winding between low pressure, thereby reduced the whole anti-short circuit capability of transformer, stay hidden danger for the safe operation of transformer.
The utility model content
The utility model purpose is to provide a kind of three winding loaded voltage-regulating electric transformers of middle pressure zone non-excitation pressure adjustment, the independent pressure regulation winding of middle pressure employing has replaced the middle pressure winding construction with the tap section, dwindled the distance of middle pressure winding and low pressure winding, improved the ampere-turn equilibrium between winding, improve the whole anti-short circuit capability of transformer, solved the problems referred to above that background technology exists.
The technical solution of the utility model is: a kind of three winding loaded voltage-regulating electric transformers of middle pressure zone non-excitation pressure adjustment, comprise iron core, low-voltage coil, intermediate voltage winding, high-tension coil, high pressure voltage regulation coil, middle pressure voltage regulation coil, iron core is set with low-voltage coil, intermediate voltage winding, high-tension coil and voltage regulation coil from inside to outside with one heart, described voltage regulation coil be by the high pressure voltage regulation coil at its middle part with and the middle pressure voltage regulation coil at two ends consist of.
Described middle pressure voltage regulation coil is connected with intermediate voltage winding, and described high pressure voltage regulation coil is connected with high-tension coil; The high-voltage leading-out wire of described high-tension coil is drawn in the middle part of coil.
Good effect of the present utility model: the utility model is placed on middle pressure pressure regulation tap section the end of high pressure voltage regulation coil as voltage regulation coil independently, take full advantage of the useful space of high pressure pressure regulation end, the distance of also having dwindled intermediate voltage winding and low-voltage coil simultaneously, increased the filling rate of transformer coil, reduced transformer material Cheng Mu, improve the ampere-turn equilibrium between coil, improved the whole anti-short circuit capability of transformer.Simultaneously the high-voltage leading-out wire of high-tension coil adopts the mode of drawing from the coil middle part, has made the electric field between high pressure and middle pressure pressure regulation, high pressure voltage regulation coil more easily control, and is easily manufactured.
Description of drawings
Fig. 1 is the utility model embodiment schematic diagram;
In figure: iron core 1, low-voltage coil 2, intermediate voltage winding 3, high-tension coil 4, high pressure voltage regulation coil 5, middle pressure voltage regulation coil 6.
Embodiment
Below in conjunction with accompanying drawing, by embodiment, the utility model is described further.
A kind of three winding loaded voltage-regulating electric transformers of middle pressure zone non-excitation pressure adjustment, comprise iron core 1, low-voltage coil 2, intermediate voltage winding 3, high-tension coil 4, high pressure voltage regulation coil 5, middle pressure voltage regulation coil 6, iron core is set with low-voltage coil, intermediate voltage winding, high-tension coil and voltage regulation coil from inside to outside with one heart, described voltage regulation coil be by the high pressure voltage regulation coil at its middle part with and the middle pressure voltage regulation coil at two ends consist of.
Described middle pressure voltage regulation coil is connected with intermediate voltage winding, and described high pressure voltage regulation coil is connected with high-tension coil; The high-voltage leading-out wire of described high-tension coil is drawn in the middle part of coil.
Claims (2)
1. three winding loaded voltage-regulating electric transformers of pressure zone non-excitation pressure adjustment in a kind, it is characterized in that: comprise iron core (1), low-voltage coil (2), intermediate voltage winding (3), high-tension coil (4), high pressure voltage regulation coil (5) and middle pressure voltage regulation coil (6), iron core is set with low-voltage coil, intermediate voltage winding, high-tension coil and voltage regulation coil from inside to outside with one heart, described voltage regulation coil be by the high pressure voltage regulation coil at its middle part with and the middle pressure voltage regulation coil at two ends consist of.
2. three winding loaded voltage-regulating electric transformers of a kind of middle pressure zone non-excitation pressure adjustment according to claim 1, it is characterized in that: described middle pressure voltage regulation coil is connected with intermediate voltage winding, and described high pressure voltage regulation coil is connected with high-tension coil; The high-voltage leading-out wire of described high-tension coil is drawn in the middle part of coil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220718890 CN202948829U (en) | 2012-12-24 | 2012-12-24 | Three-winding on-load voltage regulation power transformer with excitation-free voltage regulation in medium voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220718890 CN202948829U (en) | 2012-12-24 | 2012-12-24 | Three-winding on-load voltage regulation power transformer with excitation-free voltage regulation in medium voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202948829U true CN202948829U (en) | 2013-05-22 |
Family
ID=48424520
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220718890 Expired - Lifetime CN202948829U (en) | 2012-12-24 | 2012-12-24 | Three-winding on-load voltage regulation power transformer with excitation-free voltage regulation in medium voltage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202948829U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106935382A (en) * | 2015-12-29 | 2017-07-07 | 保定保菱变压器有限公司 | A kind of new structure of transformer body |
-
2012
- 2012-12-24 CN CN 201220718890 patent/CN202948829U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106935382A (en) * | 2015-12-29 | 2017-07-07 | 保定保菱变压器有限公司 | A kind of new structure of transformer body |
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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: 20130522 |