CN219917923U - GIL bus arrangement structure for low-voltage side of indoor substation single-phase transformer - Google Patents
GIL bus arrangement structure for low-voltage side of indoor substation single-phase transformer Download PDFInfo
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- CN219917923U CN219917923U CN202320587525.4U CN202320587525U CN219917923U CN 219917923 U CN219917923 U CN 219917923U CN 202320587525 U CN202320587525 U CN 202320587525U CN 219917923 U CN219917923 U CN 219917923U
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- 238000012360 testing method Methods 0.000 abstract description 10
- 238000012423 maintenance Methods 0.000 abstract description 5
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- 238000010276 construction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The utility model provides a GIL bus arrangement structure for a low-voltage side of a single-phase transformer of an indoor substation, which comprises a GIL three-phase pipeline, a GIS sleeve, a main transformer low-voltage side sleeve, flexible wires and hardware fittings; the GIL three-phase pipeline is used as a bus bar for delta-shaped connection of the low-voltage side of the main transformer and is arranged on a wall of the low-voltage side of the main transformer, two-phase GIS sleeves are arranged at the positions of the low-voltage sides of the main transformer, fittings used for connection are arranged at the ends of the GIS sleeves, and two-phase conductors led out from the GIS sleeves are correspondingly connected with the inside of the sleeve of the low-voltage side of the main transformer through the fittings and flexible wires. The utility model has the advantages of clear structure, simple lead connection, space saving on the premise of meeting the delta-shaped wiring connection of the low-voltage side of the main transformer, convenient voltage withstand test and later operation and maintenance, high operation efficiency and strong practicability.
Description
Technical Field
The utility model belongs to the technical field of electric facilities, and particularly relates to a GIL bus arrangement structure for a low-voltage side of a single-phase transformer of an indoor transformer substation in alternating current power transmission and transformation engineering.
Background
In the prior indoor transformer substation engineering, when the low-voltage side of the single-phase transformer adopts delta-shaped connection, the low-voltage side of the single-phase transformer adopts an open tubular bus for connection. However, the transformer room of the indoor transformer substation is limited in space, and is arranged by adopting the open tubular bus, so that the occupied space is large, the control of the electric distance is not facilitated, and the inconvenience is brought to the later operation and maintenance. If the GIL pipeline is connected in a mode of combining with the oil-gas sleeve, when the main transformer withstand voltage test is carried out, the test sleeve is required to be installed independently, and the workload of the withstand voltage test is increased.
Disclosure of Invention
The utility model aims to provide a GIL bus arrangement structure for the low-voltage side of a single-phase transformer of an indoor substation, which has the advantages of clear arrangement structure, simple lead connection, space saving on the premise of meeting the delta-shaped wiring connection of the low-voltage side of a main transformer, convenience in withstand voltage test and later operation and maintenance, higher operation efficiency and stronger practicability.
In order to achieve the above purpose, the utility model provides a GIL bus arrangement structure for the low-voltage side of a single-phase transformer of an indoor substation, which comprises a GIL three-phase pipeline, a GIS sleeve, a main transformer low-voltage side sleeve, flexible wires and hardware fittings; the GIL three-phase pipeline is used as a bus bar for delta-shaped connection of the low-voltage side of the main transformer and is arranged on a wall of the low-voltage side of the main transformer, two-phase GIS sleeves are arranged at the positions of the low-voltage sides of the main transformer, fittings used for connection are arranged at the ends of the GIS sleeves, and two-phase conductors led out from the GIS sleeves are correspondingly connected with the inside of the sleeve of the low-voltage side of the main transformer through the fittings and flexible wires.
Further, the main transformer low-voltage side sleeve is arranged on the side, close to the indoor wall, of the main transformer.
Further, the GIS sleeve is arranged at the low-voltage side sleeve of each phase main transformer.
The utility model has the beneficial effects that:
(1) The utility model can realize delta connection of the low-voltage side of the main transformer of the indoor substation in a limited space, is suitable for the latest design requirement, can effectively avoid the problem of short electrical distance caused by small indoor arrangement space, and improves the stability and the power supply reliability of a power grid system;
(2) According to the utility model, through the open type connection mode of the sleeve at the low-voltage side of the main transformer and the GIS sleeve, the problem that a test sleeve is required to be additionally arranged for the main transformer withstand voltage in the oil-gas sleeve scheme is solved, the complexity of design and the complexity of test are reduced, and the method has popularization value in the aspect of indoor main transformer delta-shaped connection and has a wide application prospect;
(3) The GIL pipeline adopted by the utility model is a three-phase integrated GIL pipeline of a conventional type, and the difference is that two phases are led out from each phase main transformer, so that a conventional equipment structure can be adopted without redevelopment.
(4) The utility model fully considers the working difficulty and comfort level in the construction and operation and maintenance stage, does not need special construction technology, improves the installation and operation and maintenance efficiency, and has stronger practicability, economy and social benefit.
Drawings
FIG. 1 is a top view of the GIL bus bar arrangement of the delta connection on the low voltage side of the indoor substation single phase transformer of the present utility model;
FIG. 2 is a cross-sectional view of a low-side delta connection of a single-phase transformer of an indoor substation according to the utility model;
FIG. 3 is a sectional view of a GIL bus bar with a delta connection on the low voltage side of the indoor substation single-phase transformer of the present utility model;
in the figure: 1. GIL three-phase pipeline; 2. GIS sleeve; 3. a main transformer low-voltage side sleeve; 4. a flexible wire; 5. and hardware fittings.
Detailed Description
For a better understanding of the purpose, structure and function of the present utility model, a GIL bus bar arrangement structure for a low voltage side of an indoor substation single-phase transformer is described in further detail below with reference to the accompanying drawings.
The utility model is further described below with reference to fig. 1 to 3 and examples.
As shown in fig. 1 to 3, the utility model provides a GIL busbar arrangement structure for delta connection of a low-voltage side of a single-phase transformer of an indoor substation, which comprises a GIL three-phase pipeline 1, a GIS sleeve 2, a main transformer low-voltage side sleeve 3, a flexible wire 4 and a hardware fitting 5.
The GIL three-phase pipeline is used as a bus bar of the low-voltage side of the main transformer, A, B, C three-phase conductors are arranged in the pipeline, the arrangement is compact, the occupied space is small, in order to form delta-shaped connection, two-phase GIS sleeves 2 are arranged at the low-voltage side of each phase of the main transformer and are used for being connected with the low-voltage side of the main transformer, and the arrangement phase of the GIS sleeves and the phase corresponding relation of the main transformer are determined according to the required connection group of the main transformer. The GIS sleeve is correspondingly arranged at the sleeve position of the low-voltage side of each phase of main transformer and is arranged on the GIL pipeline, and two phase conductors led out from the inside of the GIS sleeve (2) are correspondingly connected with the inside of the sleeve of the low-voltage side of the main transformer through flexible wires and hardware fittings, so that the led-out phases can be flexibly selected.
The sleeve on the low-voltage side of the main transformer is required to be arranged on the GIL pipeline side, so that the flexible conductor is conveniently connected with the GIS sleeve, the GIL three-phase pipeline and the GIS sleeve are firstly installed on site, then the main transformer is installed, the flexible conductor and the corresponding hardware fitting for connection are installed after the main transformer is in place, and then the low-voltage side of the main transformer can be connected through the connection between the parts to form delta-shaped connection. The main transformer low-voltage side sleeve is an air sleeve, is connected with the GIS sleeve through flexible wires and hardware fittings, and does not need to adopt an additional test sleeve when the main transformer performs a voltage withstand test. And the flexible conductor is used for realizing connection of the GIS sleeve and the main transformer low-voltage side sleeve, and the corresponding flexible conductor and the hardware fitting are removed when the GIS equipment performs a voltage withstand test, so that the complex dismantling and installing work of the GIL pipeline caused by the oil gas sleeve is avoided. The hardware fitting is used for connecting the flexible conductor and the sleeve terminal board, is a standard connection mode, and is convenient to construct and disassemble.
The foregoing is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should be covered by the protection scope of the present utility model by making equivalents and modifications to the technical solution and the inventive concept thereof.
Claims (3)
1. A GIL busbar arrangement structure for indoor single-phase transformer low pressure side of transformer, characterized by: the device comprises a GIL three-phase pipeline (1), a GIS sleeve (2), a main transformer low-voltage side sleeve (3), flexible wires (4) and hardware fittings (5); the GIL three-phase pipeline (1) is used as a bus bar which is connected in delta shape at the low-voltage side of the main transformer, the bus bar is arranged on the wall of the low-voltage side of the main transformer, two-phase GIS sleeves (2) are arranged at the position of each low-voltage side of the main transformer, the ends of the GIS sleeves (2) are provided with fittings for connection, and two-phase conductors led out from the GIS sleeves (2) are correspondingly connected with the inside of the sleeve (3) at the low-voltage side of the main transformer through fittings (5) and flexible wires (4).
2. GIL busbar arrangement for the low-voltage side of indoor substation single-phase transformers according to claim 1, characterized in that the main transformer low-voltage side bushings (3) are arranged on the side of the main transformer close to the indoor wall.
3. GIL busbar arrangement for the low-voltage side of indoor substation single-phase transformers according to claim 2, characterized in that the GIS bushings (2) are arranged at each phase main transformer low-voltage side bushing (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320587525.4U CN219917923U (en) | 2023-03-23 | 2023-03-23 | GIL bus arrangement structure for low-voltage side of indoor substation single-phase transformer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320587525.4U CN219917923U (en) | 2023-03-23 | 2023-03-23 | GIL bus arrangement structure for low-voltage side of indoor substation single-phase transformer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219917923U true CN219917923U (en) | 2023-10-27 |
Family
ID=88426043
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320587525.4U Active CN219917923U (en) | 2023-03-23 | 2023-03-23 | GIL bus arrangement structure for low-voltage side of indoor substation single-phase transformer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219917923U (en) |
-
2023
- 2023-03-23 CN CN202320587525.4U patent/CN219917923U/en active Active
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