CN214625744U - 500kV indoor transformer substation low-voltage bus arrangement structure - Google Patents
500kV indoor transformer substation low-voltage bus arrangement structure Download PDFInfo
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- CN214625744U CN214625744U CN202120589370.9U CN202120589370U CN214625744U CN 214625744 U CN214625744 U CN 214625744U CN 202120589370 U CN202120589370 U CN 202120589370U CN 214625744 U CN214625744 U CN 214625744U
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Abstract
The utility model discloses a low-voltage bus arrangement structure of a 500kV indoor transformer station, which comprises a transformer and a 500kV main transformer overhead incoming line platform, wherein a low-voltage bus is arranged below the 500kV main transformer overhead incoming line platform, and the transformer and the low-voltage bus are arranged at intervals along the same direction; the medium-voltage side of the transformer is electrically connected with a 220kV incoming bus, the low-voltage side of the transformer is electrically connected with a low-voltage bus through a flexible conductor, and an incoming bushing of 35kVGIS equipment is electrically connected with the low-voltage bus through the flexible conductor; the 220kV inlet wire bus, the inlet wire sleeve of the 35kVGIS equipment and the low-voltage bus are sequentially stacked from bottom to top. The utility model discloses it is clear to reach the differentiation between low pressure busbar and the transformer to and the reasonable purpose of the spatial arrangement of the indoor transformer substation of 500 kV.
Description
Technical Field
The utility model relates to a high tension electricity transmission equipment technical field especially relates to an indoor transformer substation low pressure busbar arrangement structure that converges of 500 kV.
Background
With the continuous improvement of the industrialization level, the urban scale is gradually enlarged, the power load density is increased year by year, and the construction of transformer stations in cities becomes a necessary trend. In order to ensure safe and reliable power utilization in the central area of a large city and to construct a saving, environment-friendly and harmonious power grid, the conventional 500kV transformer substation is gradually set in an indoor arrangement mode.
The low-voltage bus bar is arranged in a main transformer chamber, the low-voltage bus bar and a transformer are not clearly distinguished, and due to the high construction and installation requirements of the low-voltage bus bar, when an operator needs to overhaul or maintain the low-voltage bus bar, the overhaul and maintenance of the main transformer are influenced, and the working efficiency of the operator is reduced;
in addition, in the prior art, the 220KV incoming line bus, the incoming line bushing of the 35KVGIS device, and the low-voltage bus bar are laid in the same direction, and the pair of the 220KV incoming line bus, the incoming line bushing of the 35KVGIS device, and the low-voltage bus bar occupies a larger space of a 500KV indoor substation.
Disclosure of Invention
The utility model aims at: the utility model provides an indoor transformer substation voltage of 500kV bus bar arrangement structure that converges to reach the low pressure and converge the differentiation between bus bar and the transformer clearly, and the spatial arrangement of the indoor transformer substation of 500kV reasonable purpose.
In order to achieve the purpose, the utility model provides a low-voltage bus arrangement structure of a 500kV indoor transformer station, which comprises a transformer and a 500kV main transformer overhead incoming line platform, wherein a low-voltage bus is arranged below the 500kV main transformer overhead incoming line platform, and the transformer and the low-voltage bus are sequentially arranged at intervals along the same direction;
the medium-voltage side of the transformer is electrically connected with a 220KV incoming bus, the low-voltage side of the transformer is electrically connected with the low-voltage bus bar through a flexible conductor, and an incoming sleeve of 35KVGIS equipment is electrically connected with the low-voltage bus bar through a flexible conductor;
the 220KV incoming line bus, the incoming line sleeve of the 35KVGIS equipment and the low-voltage bus bar are sequentially stacked from bottom to top.
In some embodiments of the present application, the distance between the low voltage bus bar and ground is 6810 m.
In some embodiments of the present application, the low voltage bus bars of the same phase are arranged in multiple segments, and the adjacent low voltage bus bars are connected to each other through a jumper fitting and a bracket.
In some embodiments of the present application, the low voltage bus bar is an aluminum magnesium alloy hard tube bus bar.
In some embodiments of the present application, the adjacent transformers are connected by a firewall, and a gap is formed at a position of the firewall close to the low-voltage bus bar.
In some embodiments of the present application, the low voltage bus bar is supported by post insulators.
The embodiment of the utility model provides an indoor transformer substation low pressure busbar arrangement structure of 500kV, it compares with prior art, and its beneficial effect lies in:
the utility model discloses the indoor transformer substation low pressure of 500kV arranges the structure that converges, because transformer and low pressure busbar set up along same direction interval in proper order, therefore, transformer and low pressure busbar set up respectively in different places, the location differentiation of transformer and low pressure busbar is obvious, when the operation personnel overhaul or maintain low pressure busbar, can not cause the influence to the maintenance or the maintenance of transformer, thereby the operational environment and the maintenance environment of transformer and low pressure busbar have been improved, be convenient for the hoist and mount and the maintenance of transformer and low pressure busbar, engineering cost is reduced, thereby certain popularization nature has;
in addition, the 220KV incoming line bus, the incoming line bushing of the 35KVGIS device, and the low-voltage bus bar are sequentially stacked from bottom to top, so that the space occupied by the 220KV incoming line bus, the incoming line bushing of the 35KVGIS device, and the low-voltage bus bar is greatly reduced, and the internal space of the 500KV indoor substation is optimized; in addition, the requirement of electrical safety clear distance between the low-voltage bus bar and the grounding part at the bottom of a building can be met, and the construction space requirement of a flexible conductor between the low-voltage bus bar and the wire inlet sleeve of the 35KVGIS equipment is reserved.
Drawings
Fig. 1 is one of the schematic structural diagrams of the arrangement structure of the low-voltage bus bar of the 500kV indoor substation of the embodiment of the present invention.
Fig. 2 is a schematic partial structure diagram of fig. 1 according to an embodiment of the present invention.
Fig. 3 is a second schematic structural diagram of the arrangement structure of the low-voltage bus bar of the 500kV indoor substation of the embodiment of the present invention.
In the figure, a 1 kV and 500kV main transformer overhead incoming line platform; 2. a transformer; 3. a low voltage bus bar; 4. 220KV incoming line bus; 5. the inlet wire sleeve of 35KVGIS equipment.
Detailed Description
The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.
As shown in fig. 1-3, an embodiment of the present invention provides a low-voltage bus bar 3 arrangement structure of a 500kV indoor substation, which includes a transformer 2 and a 500kV main transformer overhead incoming line platform 1, a low-voltage bus bar 3 is arranged below the 500kV main transformer overhead incoming line platform 1, and the transformer 2 and the low-voltage bus bar 3 are sequentially arranged at intervals along the same direction;
the medium-voltage side of the transformer 2 is electrically connected with a 220KV incoming bus 4, the low-voltage side of the transformer 2 is electrically connected with a low-voltage bus 3 through a flexible conductor, and an incoming bushing of 35KVGIS equipment is electrically connected with the low-voltage bus 3 through a flexible conductor;
the 220KV incoming line bus 4, the incoming line sleeve 5 of the 35KVGIS equipment and the low-voltage bus bar 3 are sequentially stacked from bottom to top.
Based on the above arrangement, the utility model discloses the indoor transformer substation low pressure busbar 3 arrangement structure of 500kV, because transformer 2 and low pressure busbar 3 set up along same direction interval in proper order, therefore, transformer 2 and low pressure busbar 3 set up respectively in different places, the location of transformer 2 and low pressure busbar 3 distinguishes obviously, the operation personnel when overhauing or maintaining low pressure busbar 3, can not cause the influence to the maintenance or the maintenance of transformer 2, thereby the operational environment and the maintenance environment of transformer 2 and low pressure busbar 3 have been improved, be convenient for the hoist and mount and the maintenance of transformer 2 and low pressure busbar 3, engineering cost has been reduced, thereby certain popularization nature has;
in addition, the 220KV incoming bus 4, the incoming bushing 5 of the 35KVGIS device, and the low-voltage bus bar 3 are sequentially stacked from bottom to top, so that the space occupied by the incoming bushing 5 of the 220KV incoming bus 4 and the 35KVGIS device and the low-voltage bus bar 3 is greatly reduced, and the internal space of the 500KV indoor substation is optimized; in addition, the requirement of electrical safety clear distance between the low-voltage bus bar 3 and the grounding part at the bottom of a building can be met, and the construction space requirement of a flexible conductor between the low-voltage bus bar 3 and the wire inlet sleeve 5 of the 35KVGIS equipment is reserved.
In some embodiments, optionally, as shown in fig. 1 to 3, it is found through tests that the distance between the low voltage bus bar 3 and the ground is 6810m to meet the requirement of electrical safety clearance and the construction requirement of the flexible lead for electrically connecting the low voltage bus bar 3 and the wire inlet sleeve 5 of the 35KVGIS device.
In some embodiments, optionally, as shown in fig. 3, the transformer 2 of this embodiment is divided into an a-phase transformer 2, a B-phase transformer 2, and a C-phase transformer 2, the low-voltage bus bar 3 is divided into an a-phase low-voltage shunt bus bar, a B-phase low-voltage shunt bus bar, and a C-phase low-voltage shunt bus bar, and the adjacent a-phase low-voltage shunt bus bars, the adjacent B-phase low-voltage shunt bus bars, and the adjacent C-phase low-voltage shunt bus bars are connected with the bracket through jumper fittings, so as to facilitate the hoisting length of each low-voltage bus bar 3, effectively reduce the hoisting length of each low-voltage bus bar 3, reduce the welding section of the low-voltage bus bar 3, ensure the strength of the low-voltage bus bar 3, and improve the operation quality of the 500kV indoor substation.
In some embodiments, optionally, the low-voltage bus bar 3 in the prior art adopts a GIS bus bar, which is insulated by sulfur hexafluoride gas, and has a risk of gas leakage, in order to solve the above technical problems, as shown in fig. 1 to 3, the low-voltage bus bar 3 is an aluminum magnesium alloy hard tube bus, and the magnesium aluminum alloy hard tube bus has no risk of gas leakage, so that not only is the purpose of safe operation realized, but also the workload of operation and maintenance personnel is reduced; in addition, the cost of the aluminum-magnesium alloy hard tube bus is lower than that of the GIS bus, so that the construction cost of the 500kV indoor transformer substation is reduced.
In some embodiments, optionally, as shown in fig. 1 to 3, adjacent transformers 2 are connected by a firewall, and a gap is formed at a position of the firewall close to the low-voltage bus bar 3, so that a hoisting space of the low-voltage bus bar 3 is ensured, a tour route is optimized, and a human-oriented design concept is embodied.
In some embodiments, optionally, as shown in fig. 1-3, the low voltage bus bar 3 is supported by post insulators to facilitate the placement of the low voltage bus bar 3.
To sum up, the utility model discloses the indoor transformer substation low pressure of 500kV female arrangement structure that converges, because transformer 2 and low pressure busbar 3 set up along same direction interval in proper order, from this, transformer 2 and low pressure busbar 3 set up respectively in the place of difference, transformer 2 and low pressure busbar 3's location differentiation is obvious, the operation personnel is overhauing or when maintaining low pressure busbar 3, can not cause the influence to transformer 2's maintenance or maintenance, thereby transformer 2 and low pressure busbar 3's operational environment and maintenance environment have been improved, be convenient for transformer 2 and low pressure busbar 3's hoist and mount and overhaul, engineering cost has been reduced, thereby certain popularization nature has.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and replacements can be made without departing from the technical principle of the present invention, and these modifications and replacements should also be regarded as the protection scope of the present invention.
Claims (6)
1. A low-voltage bus arrangement structure of a 500kV indoor substation is characterized by comprising a transformer and a 500kV main transformer overhead incoming line platform, wherein a low-voltage bus is arranged below the 500kV main transformer overhead incoming line platform, and the transformer and the low-voltage bus are sequentially arranged at intervals along the same direction;
the medium-voltage side of the transformer is electrically connected with a 220kV incoming bus, the low-voltage side of the transformer is electrically connected with the low-voltage bus through a flexible conductor, and an incoming bushing of 35kVGIS equipment is electrically connected with the low-voltage bus through a flexible conductor;
the 220kV inlet wire generating line, the inlet wire sleeve of 35kVGIS equipment and the low voltage busbar are stacked from bottom to top in sequence.
2. The 500kV indoor substation low voltage bus bar arrangement of claim 1, wherein the distance between the low voltage bus bar and ground is 6810 m.
3. The 500kV indoor substation low-voltage bus bar arrangement structure of claim 1, wherein the low-voltage bus bars of the same phase are provided in multiple segments, and adjacent low-voltage bus bars are connected with each other by jumper fittings and brackets.
4. The 500kV indoor substation low-voltage busbar arrangement structure of claim 1, wherein the low-voltage busbar is an aluminum magnesium alloy hard tube busbar.
5. The 500kV indoor substation low-voltage bus bar arrangement structure of claim 1, wherein adjacent transformers are connected by a firewall, and a gap is arranged on the firewall close to the low-voltage bus bar.
6. The 500kV indoor substation low voltage bus bar arrangement of claim 1, wherein the low voltage bus bar is supported by post insulators.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120589370.9U CN214625744U (en) | 2021-03-23 | 2021-03-23 | 500kV indoor transformer substation low-voltage bus arrangement structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120589370.9U CN214625744U (en) | 2021-03-23 | 2021-03-23 | 500kV indoor transformer substation low-voltage bus arrangement structure |
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| CN214625744U true CN214625744U (en) | 2021-11-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114552398A (en) * | 2022-01-12 | 2022-05-27 | 中国电建集团河北省电力勘测设计研究院有限公司 | Low-voltage side GIS busbar arrangement type of 500kV transformer substation |
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2021
- 2021-03-23 CN CN202120589370.9U patent/CN214625744U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114552398A (en) * | 2022-01-12 | 2022-05-27 | 中国电建集团河北省电力勘测设计研究院有限公司 | Low-voltage side GIS busbar arrangement type of 500kV transformer substation |
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