CN219418716U - Triangle connecting device for low-voltage winding of large single-phase transformer - Google Patents
Triangle connecting device for low-voltage winding of large single-phase transformer Download PDFInfo
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- CN219418716U CN219418716U CN202320003517.0U CN202320003517U CN219418716U CN 219418716 U CN219418716 U CN 219418716U CN 202320003517 U CN202320003517 U CN 202320003517U CN 219418716 U CN219418716 U CN 219418716U
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Abstract
The utility model discloses a triangle connection device for low-voltage windings of a large single-phase transformer, which relates to the technical field of transformers, realizes triangle connection at the low-voltage windings of an A phase-change transformer, a B phase-change transformer and a C phase-change transformer through three-phase buses, utilizes the three-phase buses to supply power for open-type equipment, solves the problem that the prior art for triangle connection arrangement above or on the side surface of a transformer body has certain potential safety hazard due to tension of electrical distance, can also reserve space for star connection of the transformer, ensures enough electrical distance, and is suitable for transformer substations.
Description
Technical Field
The utility model relates to the technical field of transformers, in particular to a triangle connecting device for a low-voltage winding of a large single-phase transformer.
Background
At present, a transformer station in a remote area is limited by traffic and transportation conditions, a single-phase transformer is generally adopted in the large-scale main transformer, the remote area is not limited by the topography and geological conditions, high-voltage electric equipment is generally arranged in an open type mode, a star-shaped connection method is generally adopted for a high-voltage winding and a medium-voltage winding of the existing large-scale single-phase transformer, and a low-voltage winding is generally connected end to end above or on the side face of a transformer body to form triangular connection arrangement, so that a certain potential safety hazard exists due to insufficient electrical distance between the star-shaped connection between the high-voltage winding and the medium-voltage winding.
Disclosure of Invention
The technical problems solved by the utility model are as follows: the utility model provides a triangle connecting device for a low-voltage winding of a large single-phase transformer, which solves the problem that the triangle connecting arrangement is carried out above or on the side surface of a transformer body in the prior art, and certain potential safety hazard exists due to the tension of electrical distance.
The utility model solves the technical problems by adopting the technical scheme that: the large single-phase transformer low-voltage winding triangle connecting device comprises an A-phase transformer, a B-phase transformer and a C-phase transformer, wherein the large single-phase transformer low-voltage winding triangle connecting device comprises a three-phase bus, and the three-phase bus comprises an A-phase, a B-phase and a C-phase; the tail end of the low-voltage winding of the phase A transformer and the head end of the low-voltage winding of the phase B transformer are connected to the phase B of the three-phase bus together, the tail end of the low-voltage winding of the phase B transformer and the head end of the low-voltage winding of the phase C transformer are connected to the phase C of the three-phase bus together, and the tail end of the low-voltage winding of the phase C transformer and the head end of the low-voltage winding of the phase A transformer are connected to the phase A of the three-phase bus together.
Further, the three-phase bus is wired in a horizontal, vertical or inclined mode.
Furthermore, the connecting wire of the three-phase bus and the large single-phase transformer adopts a flexible wire, a copper bar wire or a tubular bus.
The utility model has the beneficial effects that: the triangular connection device for the low-voltage windings of the large single-phase transformer, disclosed by the utility model, realizes triangular connection at the low-voltage windings of the phase-A transformer, the phase-B transformer and the phase-C transformer through the three-phase bus, and utilizes the three-phase bus to supply power for open-type equipment, so that the problem that certain potential safety hazards exist due to shortage of electrical distance when the triangular connection arrangement is performed above or on the side surface of the transformer body in the prior art is solved.
Drawings
Fig. 1 is a circuit structure diagram of an embodiment of a delta connection device for a low-voltage winding of a large-sized single-phase transformer, wherein A represents an A phase of a three-phase bus, B represents a B phase of the three-phase bus, and C represents a C phase of the three-phase bus.
Detailed Description
The utility model discloses a triangle connecting device for a low-voltage winding of a large single-phase transformer, which comprises an A-phase transformer, a B-phase transformer and a C-phase transformer, wherein the triangle connecting device for the low-voltage winding of the large single-phase transformer comprises a three-phase bus, and the three-phase bus comprises an A-phase, a B-phase and a C-phase; the tail end of the low-voltage winding of the phase A transformer and the head end of the low-voltage winding of the phase B transformer are connected to the phase B of the three-phase bus together, the tail end of the low-voltage winding of the phase B transformer and the head end of the low-voltage winding of the phase C transformer are connected to the phase C of the three-phase bus together, and the tail end of the low-voltage winding of the phase C transformer and the head end of the low-voltage winding of the phase A transformer are connected to the phase A of the three-phase bus together.
Further, the three-phase bus is wired in a horizontal, vertical or inclined mode.
Furthermore, the connecting wire of the three-phase bus and the large single-phase transformer adopts a flexible wire, a copper bar wire or a tubular bus.
Examples:
one embodiment of the utility model, as shown in fig. 1, comprises an A-phase transformer, a B-phase transformer, a C-phase transformer, an A-phase of a three-phase bus, a B-phase of a three-phase bus and a C-phase of a three-phase bus, wherein the tail end of a low-voltage winding of the A-phase transformer is connected with the head end of a low-voltage winding of the B-phase transformer and is jointly connected with the B-phase of the three-phase bus, the tail end of a low-voltage winding of the B-phase transformer is connected with the head end of a low-voltage winding of the C-phase transformer and is jointly connected with the C-phase of the three-phase bus, specifically, the connecting wires among the A phase, the B phase and the C phase of the three-phase bus and the low-voltage windings of the large single-phase transformer adopt flexible wires, copper bar wires or tubular buses, so that investment cost can be saved, the three-phase bus adopts horizontal, vertical or inclined wiring, the three-phase bus is used for realizing triangular connection of the low-voltage windings of the three transformers, and the three-phase bus is used for supplying power to the open-type equipment, so that the space of the star connection of the high-voltage windings and the medium-voltage windings of the transformer is prevented from being occupied by triangular connection arrangement above or on the side surface of the transformer body, and the electric distance is ensured.
Claims (3)
1. The large single-phase transformer low-voltage winding triangle connecting device is characterized by comprising an A-phase transformer, a B-phase transformer and a C-phase transformer, wherein the large single-phase transformer low-voltage winding triangle connecting device comprises a three-phase bus, and the three-phase bus comprises an A phase, a B phase and a C phase; the tail end of the low-voltage winding of the phase A transformer and the head end of the low-voltage winding of the phase B transformer are connected to the phase B of the three-phase bus together, the tail end of the low-voltage winding of the phase B transformer and the head end of the low-voltage winding of the phase C transformer are connected to the phase C of the three-phase bus together, and the tail end of the low-voltage winding of the phase C transformer and the head end of the low-voltage winding of the phase A transformer are connected to the phase A of the three-phase bus together.
2. The delta connection device for low voltage windings of large single phase transformers according to claim 1, characterized in that the three phase bus bars are wired in horizontal, vertical or inclined form.
3. The delta connection device for low-voltage windings of large single-phase transformers according to claim 1 or 2, characterized in that the connecting lines of the three-phase bus bars and the large single-phase transformers are flexible wires, copper bar wires or tubular bus bars.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320003517.0U CN219418716U (en) | 2023-01-03 | 2023-01-03 | Triangle connecting device for low-voltage winding of large single-phase transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320003517.0U CN219418716U (en) | 2023-01-03 | 2023-01-03 | Triangle connecting device for low-voltage winding of large single-phase transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219418716U true CN219418716U (en) | 2023-07-25 |
Family
ID=87239079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320003517.0U Active CN219418716U (en) | 2023-01-03 | 2023-01-03 | Triangle connecting device for low-voltage winding of large single-phase transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219418716U (en) |
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2023
- 2023-01-03 CN CN202320003517.0U patent/CN219418716U/en active Active
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