CN212934373U - Winding for transformer measurement - Google Patents
Winding for transformer measurement Download PDFInfo
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- CN212934373U CN212934373U CN202021824654.3U CN202021824654U CN212934373U CN 212934373 U CN212934373 U CN 212934373U CN 202021824654 U CN202021824654 U CN 202021824654U CN 212934373 U CN212934373 U CN 212934373U
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Abstract
The utility model relates to a transformer test application discloses a winding for transformer measurement very much. This winding for transformer measurement, including installing high voltage winding, low voltage winding and the balanced winding on the transformer case, its characterized in that: the balance winding is provided with two leading-out heads, and the leading-out heads are provided with leading-out sleeves which are in short connection; and the 0-phase sleeve of the high-voltage winding and the 0-phase sleeve of the low-voltage winding are respectively connected with an output interface outgoing line of the transformer winding characteristic tester. The utility model discloses simple structure, the processing ease, the practicality is strong, and the feasibility is high, and high low voltage winding deformation test's image curve is measured reliably to available frequency response method, improves measuring accuracy, better reflection product information.
Description
Technical Field
The utility model relates to a transformer test application, in particular to winding for transformer measurement.
Background
In the present stage, with the development of economy, a large-capacity transformer is more and more. In order to improve the power supply quality of the transformer and reduce the local overheating phenomenon of zero-sequence leakage magnetic flux generated in the structural part of the transformer, save the manufacturing cost of the transformer and ensure that the transformer can run economically, safely and reliably, a balanced winding with a delta connection method is mostly adopted in the design of the transformer.
The role of the balance winding in the transformer is: a, providing a higher harmonic channel to improve the waveform of induced electromotive force; b, improving the capacity of the transformer with unbalanced load to stabilize a voltage neutral point; c improves the zero sequence impedance of the transformer, so the transformer with the balance winding can well solve the problems. For the transformer with balanced windings, a better experimental method is also an important ring for ensuring the quality of the transformer.
Disclosure of Invention
The utility model discloses a remedy prior art not enough, provide a winding for transformer measurement easy operation, practicality are strong, the feasibility is high.
The utility model discloses a realize through following technical scheme:
the utility model provides a winding for transformer measurement, is including installing high voltage winding, low voltage winding and balanced winding on the transformer case which characterized in that: the balance winding is provided with two leading-out heads, and the leading-out heads are provided with leading-out sleeves which are in short connection; and the 0-phase sleeve of the high-voltage winding and the 0-phase sleeve of the low-voltage winding are respectively connected with an output interface outgoing line of the transformer winding characteristic tester.
The utility model discloses be applied to the transformer of taking balanced winding, belong to the experimental improvement of transformer, when the transformer is done the winding and is out of shape the experiment, through to balanced winding short circuit, reduce the influence of star connection high-low voltage winding self, exert balanced winding and provide the higher harmonic passageway, improve the advantage of response electromotive force waveform.
The utility model discloses a more excellent technical scheme does:
and the outgoing lines of the input interface of the transformer winding characteristic tester are respectively connected with the high-voltage bushing A/B/C of the corresponding high-voltage winding and the low-voltage bushing a/B/C of the corresponding low-voltage winding, and are used for comparing high-voltage/low-voltage three-phase image curves.
The high-voltage winding and the low-voltage winding are connected in a star connection mode, the conventional winding connection mode of the transformer is not changed, and the high-voltage winding and the low-voltage winding are improved.
The utility model discloses simple structure, the processing ease, the practicality is strong, and the feasibility is high, and high low voltage winding deformation test's image curve is measured reliably to available frequency response method, improves measuring accuracy, better reflection product information.
Drawings
The present invention will be further described with reference to the accompanying drawings.
Fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural diagram of a primary transformer winding.
In the figure, 1 transformer box, 2 transformer winding characteristic tester, 3 high voltage winding, 4 low voltage winding, 5 balance winding.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.
The attached drawing is a specific embodiment of the present invention, and takes an a-phase winding deformation test of the low-voltage winding 4 as an example. The transformer comprises a high-voltage winding 3, a low-voltage winding 4 and a balance winding 5 which are arranged on a transformer box 1, wherein the balance winding 5 is a double-lead-out head, a lead-out sleeve is arranged on the lead-out head, and the two lead-out sleeves are in short circuit; and the 0-phase sleeve of the high-voltage winding 3 and the low-voltage winding 4 are respectively connected with an output interface outgoing line of the transformer winding characteristic tester 2.
The utility model is suitable for a take balanced winding 5's transformer belongs to the experimental improvement structure of transformer. The transformer is provided with a balance winding 5, the leading-out of the balance winding 5 is double leading-out, and the high-voltage winding 3 and the low-voltage winding 4 are in star connection. The rated current between the balance windings 5 is calculated from the capacity of the balance windings 5, and an appropriate short-circuit wire is selected according to the current.
Before a winding deformation experiment, a lead-out bushing of a balance winding 5 is connected in short, an output interface lead-out wire of a transformer winding characteristic tester 2 is respectively connected with a 0-phase bushing of a high-voltage winding 3 and a low-voltage winding 4, and an input interface lead-out wire is connected with a corresponding high-voltage bushing A/B/C of the high-voltage winding 3 or a corresponding low-voltage bushing a/B/C of the low-voltage winding 4. Then, comparing the three-phase image curves of the high-voltage winding and the low-voltage winding 4 respectively, and seeing what the degree of acquaintance of the image curves is.
Practice proves that the high-low voltage winding of the transformer with the balance winding 5 is deformed and measured, and the utility model discloses a winding structure has greatly improved the test accuracy.
The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above-mentioned are only embodiments of the present invention, and are not intended to limit the present invention, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (3)
1. The utility model provides a winding for transformer measurement, is including installing high voltage winding (3), low voltage winding (4) and balanced winding (5) on transformer case (1), its characterized in that: the balance winding (5) is provided with two leading-out heads, and the leading-out heads are provided with leading-out sleeves which are in short connection; and the 0-phase sleeve of the high-voltage winding (3) and the 0-phase sleeve of the low-voltage winding (4) are respectively connected with an output interface outgoing line of the transformer winding characteristic tester (2).
2. The winding for transformer measurement according to claim 1, wherein: and outgoing lines of an input interface of the transformer winding characteristic tester (2) are respectively connected to a high-voltage bushing A/B/C of the corresponding high-voltage winding (3) and a low-voltage bushing a/B/C of the corresponding low-voltage winding (4).
3. The winding for transformer measurement according to claim 1, wherein: the high-voltage winding (3) and the low-voltage winding (4) are connected in a star connection mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021824654.3U CN212934373U (en) | 2020-08-27 | 2020-08-27 | Winding for transformer measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021824654.3U CN212934373U (en) | 2020-08-27 | 2020-08-27 | Winding for transformer measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212934373U true CN212934373U (en) | 2021-04-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021824654.3U Active CN212934373U (en) | 2020-08-27 | 2020-08-27 | Winding for transformer measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212934373U (en) |
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2020
- 2020-08-27 CN CN202021824654.3U patent/CN212934373U/en active Active
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