CN211957422U - Voltage regulating transformer with autotransformer - Google Patents
Voltage regulating transformer with autotransformer Download PDFInfo
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- CN211957422U CN211957422U CN202021031602.0U CN202021031602U CN211957422U CN 211957422 U CN211957422 U CN 211957422U CN 202021031602 U CN202021031602 U CN 202021031602U CN 211957422 U CN211957422 U CN 211957422U
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- 230000001105 regulatory effect Effects 0.000 title claims abstract description 38
- 238000004804 winding Methods 0.000 claims abstract description 78
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
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Abstract
The utility model relates to a take autotransformer's regulating transformer belongs to transformer technical field. The technical scheme of the utility model is that: the main transformer comprises a main winding (1), a voltage regulating winding (2) and a tap switch (3), the autotransformer comprises a first autotransformer winding (4) and a second autotransformer winding (5) which are connected with each other, and the end part of the first autotransformer winding (4) is connected with the tail end of the main winding (1) in series; the second autotransformer winding (5) is connected with the voltage regulating winding (2), the voltage regulating winding (2) is connected to the head end of the first autotransformer winding (4) through the tap switch (3), and the voltage regulating winding (2) is connected with the autotransformer in parallel. The utility model has the advantages that: the voltage regulation is realized by serially connecting an autotransformer, the current passing through the on-load tap-changer is reduced, the purpose of regulating the voltage is achieved, and the on-load tap-changer can be used for large-capacity voltage regulating transformers and low-voltage regulating transformers.
Description
Technical Field
The utility model relates to a take autotransformer's regulating transformer belongs to transformer technical field.
Background
With the increase of the transmission capacity and voltage of the power grid, when the voltage of the transformer is regulated, the current flowing through the on-load tap-changer is very large, and the withstand current of the on-load tap-changer cannot meet the requirement.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a take autotransformer's tap changer realizes regulating voltage through an autotransformer of establishing ties, reduces the electric current that passes through in the on-load tap-changer, reaches regulating voltage's purpose, can be used for the transformer of the tap-changer of large capacity and low pressure regulation, has solved the above-mentioned problem that exists effectively among the background art.
The technical scheme of the utility model is that: a voltage regulating transformer with an autotransformer comprises a main transformer and the autotransformer, wherein the autotransformer and the main transformer are arranged in an oil tank, the main transformer comprises a main winding, a voltage regulating winding and a tap switch, the autotransformer comprises a first autotransformer winding and a second autotransformer winding which are connected with each other, and the end part of the first autotransformer winding is connected with the tail end of the main winding in series; and the second autotransformer winding is connected with the voltage regulating winding, the voltage regulating winding is connected to the head end of the first autotransformer winding through the tap switch, and the voltage regulating winding is connected with the autotransformer in parallel.
And the current flowing through the first autotransformer winding and the second autotransformer winding is inversely proportional to the number of turns of the first autotransformer winding and the second autotransformer winding.
The utility model has the advantages that: the voltage regulation is realized by serially connecting an autotransformer, the current passing through the on-load tap-changer is reduced, the purpose of regulating the voltage is achieved, and the on-load tap-changer can be used for large-capacity voltage regulating transformers and low-voltage regulating transformers.
Drawings
FIG. 1 is a schematic diagram of the wiring of the present invention;
in the figure: the transformer comprises a main winding 1, a voltage regulating winding 2, a tap switch 3, a first autotransformer winding 4 and a second autotransformer winding 5.
Detailed Description
The technical solution of the present invention will be further described in detail with reference to the accompanying drawings and embodiments.
A voltage regulating transformer with an autotransformer comprises a main transformer and the autotransformer, wherein the autotransformer and the main transformer are arranged in an oil tank, the main transformer comprises a main winding 1, a voltage regulating winding 2 and a tap switch 3, the autotransformer comprises a first autotransformer winding 4 and a second autotransformer winding 5 which are connected with each other, and the end part of the first autotransformer winding 4 is connected with the tail end of the main winding 1 in series; the second autotransformer winding 5 is connected with the voltage regulating winding 2, the voltage regulating winding 2 is connected to the head end of the first autotransformer winding 4 through the tap switch 3, and the voltage regulating winding 2 is connected with the autotransformer in parallel.
The current flowing through the first autotransformer winding 4 and the second autotransformer winding 5 is inversely proportional to the number of turns of the first autotransformer winding 4 and the second autotransformer winding 5.
In practical application, the tail end of the main winding 1 is connected to the end of the first autotransformer winding 4, the voltage regulating winding 2 is connected to the two ends of the autotransformer through the tap switch 3 and is connected with the autotransformer in parallel, and the voltage of the first autotransformer winding 4 and the second autotransformer winding 5 in the autotransformer changes along with the voltage change of the voltage regulating winding 2, so that the voltage regulation is realized. Meanwhile, the two windings of the autotransformer, namely the first autotransformer winding 4 and the second autotransformer winding 5, shunt current flowing through the main winding 1, and the current flowing through the voltage regulating winding 2 is the same as the current flowing through the second autotransformer winding 5. According to the principle of magnetic potential balance, the current flowing through the first winding of the autotransformer 4 and the second winding of the autotransformer 5 is inversely proportional to the number of turns of the first winding of the autotransformer 4 and the second winding of the autotransformer 5, when the number of turns of the first winding of the autotransformer 4 is equal to that of the second winding of the autotransformer 5, the current flowing through the two windings is equal, and the current flowing through the tap changer 3 is half of the total current at the moment.
The capacity of the autotransformer is determined by the maximum tapping voltage and current of the voltage regulating winding, and the autotransformer and the main transformer are arranged in an oil tank, and the connection of leads is completed in the oil tank.
Claims (2)
1. The utility model provides a take autotransformer's regulating transformer which characterized in that: the transformer comprises a main transformer and an autotransformer, wherein the autotransformer and the main transformer are arranged in an oil tank, the main transformer comprises a main winding (1), a voltage regulating winding (2) and a tap switch (3), the autotransformer comprises a first autotransformer winding (4) and a second autotransformer winding (5) which are connected with each other, and the end part of the first autotransformer winding (4) is connected with the tail end of the main winding (1) in series; the second autotransformer winding (5) is connected with the voltage regulating winding (2), the voltage regulating winding (2) is connected to the head end of the first autotransformer winding (4) through the tap switch (3), and the voltage regulating winding (2) is connected with the autotransformer in parallel.
2. The regulating transformer with the autotransformer as claimed in claim 1, wherein: the current flowing through the first (4) and second (5) autotransformer windings is inversely proportional to the number of turns of the first (4) and second (5) autotransformer windings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021031602.0U CN211957422U (en) | 2020-06-08 | 2020-06-08 | Voltage regulating transformer with autotransformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021031602.0U CN211957422U (en) | 2020-06-08 | 2020-06-08 | Voltage regulating transformer with autotransformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211957422U true CN211957422U (en) | 2020-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021031602.0U Active CN211957422U (en) | 2020-06-08 | 2020-06-08 | Voltage regulating transformer with autotransformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211957422U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111540591A (en) * | 2020-06-08 | 2020-08-14 | 保定天威保变电气股份有限公司 | A voltage regulating transformer with an autotransformer |
-
2020
- 2020-06-08 CN CN202021031602.0U patent/CN211957422U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111540591A (en) * | 2020-06-08 | 2020-08-14 | 保定天威保变电气股份有限公司 | A voltage regulating transformer with an autotransformer |
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