CN215343664U - Special earthing device of high tension switchgear GIS combined electrical equipment - Google Patents
Special earthing device of high tension switchgear GIS combined electrical equipment Download PDFInfo
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- CN215343664U CN215343664U CN202121445961.5U CN202121445961U CN215343664U CN 215343664 U CN215343664 U CN 215343664U CN 202121445961 U CN202121445961 U CN 202121445961U CN 215343664 U CN215343664 U CN 215343664U
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- grounding
- flexible copper
- bus conductor
- copper strips
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Abstract
The utility model relates to a special grounding device for high-voltage switch GIS combined electrical equipment, which comprises a GIS metal shell, wherein a bus conductor is arranged in the GIS metal shell, and the grounding device is arranged on the bus conductor to realize the connection between the bus conductor and a grounding point; the grounding device comprises two flexible copper strips which are respectively arranged on two sides of the bus conductor, the fastening bolts connect the upper ends of the two flexible copper strips together, the adjusting bolts connect the lower ends of the two flexible copper strips together, and the fastening bolts and the adjusting bolts are matched for adjustment so that the two flexible copper strips are attached to each other and clamp the bus conductor; one of the flexible copper strips is connected with the grounding wire, and the other end of the grounding wire is connected with the grounding point. The grounding device has very important application prospect in the maintenance grounding of the high-voltage electrical appliance, has reasonable application structure, has the advantages of safety, reliability, convenience in disassembly and assembly and the like, and effectively improves the safety of the combined electrical appliance during the maintenance.
Description
Technical Field
The utility model relates to the technical field of high-voltage switches, in particular to a special grounding device for high-voltage switch GIS combined electrical equipment.
Background
Gas Insulated metal-enclosed Switchgear (GIS) is a new type of electrical device in the middle of the 60 s of the 20 th century. The complete set of switch equipment is formed by combining and sealing elements such as a circuit breaker, a disconnecting switch, a grounding switch, a current transformer, a voltage transformer, a lightning arrester, a bus, an incoming and outgoing line sleeve or a cable terminal and the like in a grounded metal shell, and filling SF6 gas with certain pressure as an insulating medium and an arc extinguishing medium. Because the novel radio frequency identification device is closed and combined, the occupied area is small, the novel radio frequency identification device is not influenced by the environment, the noise is low, the radio interference level is low, the operation is safe and reliable, and the maintenance workload is small, so that the novel radio frequency identification device is vigorously developed since the advent.
When the GIS equipment runs in a transformer substation field, the GIS equipment generally consists of intervals capable of realizing different functions, such as an incoming and outgoing line interval, a main transformer interval, a bus coupling interval, a bus equipment interval and the like, and the different function intervals are generally connected through a closed main bus. Although the combined electrical equipment has the advantage of small maintenance workload, in some cases, the GIS equipment needs to be disassembled and repaired on site.
Considering the stability of power supply, under the condition of ensuring safe operation and allowable conditions, the power failure range of the combined electrical apparatus should be reduced as much as possible in power failure warehouse-opening maintenance, generally local power failure. Disconnecting the isolating switch or the breaker of the part to be overhauled to isolate the part to be overhauled from the electrified part. When opening the storehouse on the spot, do not have the generating line section of earthing switch ground connection condition, generally have residual charge on the GIS equipment bus conductor, perhaps have the induced voltage because of electrified fracture produces. This induced voltage or charge endangers the safety of the operator and needs to be eliminated by grounding. In the prior art, when the combined electrical equipment is opened and the power is cut off for maintenance on site, a temporary grounding wire is wound on a bus conductor in a grounding mode of a bus conductor in an interval without a grounding switch, and then the temporary grounding wire is connected with an external grounding point to form grounding. The grounding mode has certain failure risk and hidden trouble of unreliable grounding.
Based on the above problem, this application provides a special earthing device of high tension switchgear GIS combined electrical apparatus.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects of the prior art, the utility model provides the special grounding device for the high-voltage switch GIS combined electrical equipment, which has the characteristics of convenience in installation, reasonable structure, safety and reliability.
The utility model is realized by the following technical scheme, and provides a special grounding device for high-voltage switch GIS combined electrical equipment, which comprises a GIS metal shell, wherein a bus conductor is arranged in the GIS metal shell, and the grounding device is arranged on the bus conductor to realize the connection between the bus conductor and a grounding point; the grounding device comprises two flexible copper strips which are respectively arranged on two sides of the bus conductor, the fastening bolts connect the upper ends of the two flexible copper strips together, the adjusting bolts connect the lower ends of the two flexible copper strips together, and the fastening bolts and the adjusting bolts are matched for adjustment so that the two flexible copper strips are attached to each other and clamp the bus conductor; one of the flexible copper strips is connected with the grounding wire, and the other end of the grounding wire is connected with the grounding point.
Preferably, one end of the grounding wire is connected with the flexible copper strip through the wire pressing terminal, and the other end of the grounding wire is provided with a grounding ring or a grounding block for connecting an external grounding point.
The utility model has the beneficial effects that:
1. the conductor grounding connection device is mainly applied to conductor grounding connection when high-voltage switch GIS combined electrical equipment is overhauled.
2. The grounding device has very important application prospect in the maintenance grounding of the high-voltage electrical appliance, has reasonable application structure, has the advantages of safety, reliability, convenience in disassembly and assembly and the like, and effectively improves the safety of the combined electrical appliance during the maintenance.
3. The GIS combined electrical equipment has the key point that the diameters of the internal bus conductors are different according to different voltage grades, rated currents and the like, and how to ensure that the grounding device can be reliably contacted with the bus conductors under the condition of different conductor diameters is the utility model. Therefore, the flexible copper strip capable of being bent is adopted in the design of the device body, the flexible copper strip can be better attached to the surface of the bus conductor, and when the diameter of the bus conductor changes, the flexible copper strip can still be wrapped on the surface of the bus conductor. The charges on the bus conductor are conducted and grounded by utilizing the good conductivity of the flexible copper strip material.
Drawings
FIG. 1 is a schematic structural view of the present invention;
shown in the figure:
1. GIS metal casing, 2, flexible copper strips, 3, bus conductor, 4, fastening bolt, 5, adjusting bolt, 6, earth connection, 7, ground ring.
Detailed Description
In order to clearly illustrate the technical features of the present solution, the present solution is explained below by way of specific embodiments.
As shown in fig. 1, the present invention includes a GIS metal housing 1, a bus conductor 3 is disposed inside the GIS metal housing 1, and a grounding device is mounted on the bus conductor 3 to connect the bus conductor 3 with a grounding point.
The grounding device comprises two flexible copper strips 2 which are respectively arranged on two sides of a bus conductor 3, a fastening bolt 4 is used for connecting the upper ends of the two flexible copper strips 2 together, an adjusting bolt 5 is used for connecting the lower ends of the two flexible copper strips 2 together, and the fastening bolt 4 and the adjusting bolt 5 are matched for adjustment so that the two flexible copper strips 2 are attached to and hoop the bus conductor 3 tightly. One of the flexible copper strips 2 is connected with a grounding wire 6, and the other end of the grounding wire 6 is connected with a grounding point. Depending on the diameter of the busbar conductor 3, the flexible copper strip 2 can be brought into reliable contact with the busbar conductor 3 by tightening the adjusting screw 5.
The GIS combined electrical equipment has the key point that the diameters of the internal bus conductors 3 are different according to different voltage grades, rated currents and the like, and how to ensure that the grounding device can be reliably contacted with the bus conductors 3 under the condition of different conductor diameters is the utility model. Therefore, the flexible copper strip 2 which can be bent is adopted in the design of the device body, the flexible copper strip 2 can be better attached to the surface of the bus conductor 3, and when the diameter of the bus conductor 3 changes, the flexible copper strip 2 can still wrap the surface of the bus conductor 3. The electric charge on the bus conductor 3 is conducted and grounded by utilizing the good conductivity of the flexible copper strip 2 material.
One end of the grounding wire 6 is connected with the flexible copper strip 2 through a wire pressing terminal, and the other end is provided with a grounding ring 7 or a grounding block for connecting an external grounding point.
When the power failure interval warehouse-opening maintenance is carried out on site and the central conductor needs to be grounded, the grounding device is installed on the bus conductor 3, and the bus conductor 3 is connected with the grounding point through the grounding device.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention can be implemented by or using the prior art, and will not be described herein again; the above embodiments and drawings are only for illustrating the technical solutions of the present invention and not for limiting the present invention, and the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that changes, modifications, additions or substitutions within the spirit and scope of the present invention may be made by those skilled in the art without departing from the spirit of the present invention, and shall also fall within the scope of the claims of the present invention.
Claims (2)
1. The utility model provides a special earthing device of high tension switchgear GIS combined electrical apparatus which characterized in that: the grounding device is arranged on the bus conductor to realize the connection between the bus conductor and a grounding point; the grounding device comprises two flexible copper strips which are respectively arranged on two sides of the bus conductor, the fastening bolts connect the upper ends of the two flexible copper strips together, the adjusting bolts connect the lower ends of the two flexible copper strips together, and the fastening bolts and the adjusting bolts are matched for adjustment so that the two flexible copper strips are attached to each other and clamp the bus conductor; one of the flexible copper strips is connected with the grounding wire, and the other end of the grounding wire is connected with the grounding point.
2. The grounding device special for the high-voltage switch GIS combined electrical equipment according to claim 1, characterized in that: one end of the grounding wire is connected with the flexible copper strip through the wire pressing terminal, and the other end of the grounding wire is provided with a grounding ring or a grounding block which is used for connecting an external grounding point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121445961.5U CN215343664U (en) | 2021-06-28 | 2021-06-28 | Special earthing device of high tension switchgear GIS combined electrical equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121445961.5U CN215343664U (en) | 2021-06-28 | 2021-06-28 | Special earthing device of high tension switchgear GIS combined electrical equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215343664U true CN215343664U (en) | 2021-12-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121445961.5U Active CN215343664U (en) | 2021-06-28 | 2021-06-28 | Special earthing device of high tension switchgear GIS combined electrical equipment |
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| CN (1) | CN215343664U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114421350A (en) * | 2022-03-09 | 2022-04-29 | 广东吉熙安电缆附件有限公司 | Grounding device for medium-voltage C-GIS switch cabinet and use method thereof |
-
2021
- 2021-06-28 CN CN202121445961.5U patent/CN215343664U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114421350A (en) * | 2022-03-09 | 2022-04-29 | 广东吉熙安电缆附件有限公司 | Grounding device for medium-voltage C-GIS switch cabinet and use method thereof |
| CN114421350B (en) * | 2022-03-09 | 2022-12-23 | 广东吉熙安电缆附件有限公司 | Grounding device for medium-voltage C-GIS switch cabinet and use method thereof |
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