Skid-mounted 35KV switch complete equipment

Abstract

The utility model relates to a skid-mounted 35KV switch complete device, which comprises a base, the top of the base is provided with a control cubicle, the left and right sides of the control cubicle are provided with an isolating switch and a circuit breaker which are fixedly connected with the top of the base, the output end of the isolating switch is connected with a first copper bar, and the output end of the isolating switch is connected with a second copper bar. The isolating switch is electrically connected with the input wiring terminal of the circuit breaker through a first copper bar, and the isolating switch and the circuit breaker are both electrically connected with the control cubicle. The device has the beneficial effects that the device can be conveniently transported to a construction site to be installed after being prefabricated in advance in a factory, so that the workload during equipment installation is reduced, and the overall construction speed of the transformer substation is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of power supply equipment, in particular to a skid-mounted 35KV switchgear assembly. Background Art

[0002] A complete set of switchgear is a vital combination of electrical equipment in the power distribution system. It is mainly responsible for receiving and distributing electrical energy. It can flexibly switch power equipment or lines according to the operation requirements of the power grid, and quickly isolate the faulty part when a fault occurs, thereby ensuring the stable operation of the rest of the power grid and protecting equipment and maintenance personnel from harm.

[0003] With the continuous development of power distribution system technology, especially in 35kV power systems, the demand for high-voltage switchgear has increased significantly. Traditional 35kV switchgear is often bulky and complex in design, resulting in a cumbersome installation process, requiring extensive on-site labor and lengthy commissioning and testing. These factors undoubtedly extend the substation construction period and increase construction costs. Utility Model Content

[0004] In response to the deficiencies in the prior art, the utility model provides a skid-mounted 35KV switchgear assembly that can be conveniently prefabricated in a factory and then transported to a construction site for installation, thereby reducing the workload during equipment installation and improving the overall construction speed of a substation.

[0005] The utility model is realized by the following technical solution, which provides a skid-mounted 35KV switchgear assembly, comprising a base, a control cabinet mounted on the top of the base, an isolating switch and a circuit breaker fixed to the top of the base being provided on the left and right sides of the control cabinet, the output end of the isolating switch being connected to a first copper busbar, the isolating switch and the circuit breaker input terminal being electrically connected via the first copper busbar, and the isolating switch and the circuit breaker being electrically connected to the control cabinet.

[0006] During use, the utility model provides a base, and a control cabinet is installed on the top of the base. An isolating switch and a circuit breaker fixed to the top of the base are provided on the left and right sides of the control cabinet. The output end of the isolating switch is connected to a first copper busbar. The isolating switch and the circuit breaker input terminal are electrically connected through the first copper busbar. The isolating switch and the circuit breaker are both electrically connected to the control cabinet. When the device is in use, it is necessary to first move the device, transport it to the construction and installation location, and place it on the prefabricated foundation. Then, the external cables are respectively connected to the external terminal board of the isolating switch, the outlet board of the circuit breaker and the control cabinet, so that the device is electrically connected to the external cables. This makes it convenient to prefabricate the device in the factory in advance and then transport it to the construction site for installation, thereby reducing the workload during equipment installation and improving the overall construction speed of the substation.

[0007] Preferably, a steel bracket is fixed to the top of the base, and the isolating switch is mounted on the steel bracket. By fixing the steel bracket to the top of the base and mounting the isolating switch on the steel bracket, the steel bracket can improve the stability of the device during use and facilitate the installation and maintenance of the isolating switch.

[0008] Preferably, a post insulator is mounted on the steel support, and the first copper bar is pressed against the post insulator. Mounting the post insulator on the steel support and pressing the first copper bar against the post insulator can improve the stability of the first copper bar during use of the device, preventing the first copper bar from shaking during use.

[0009] Preferably, a copper busbar expansion joint is fixedly connected to the end of the first copper bar away from the disconnector, and the first copper bar is flexibly connected to the circuit breaker input terminal via the copper busbar expansion joint. By fixing the copper busbar expansion joint to the end of the first copper bar away from the disconnector and flexibly connecting the first copper bar to the circuit breaker input terminal via the copper busbar expansion joint, the copper busbar expansion joint facilitates connection of the first copper bar to the circuit breaker input terminal by a worker, thereby optimizing the electrical connection, reducing contact resistance, and improving conductive efficiency.

[0010] Preferably, a lightning arrester is mounted on the steel bracket on a side of the isolating switch away from the circuit breaker, the output end of the isolating switch is connected to a second copper bar, the input end of the lightning arrester is electrically connected to the output end of the isolating switch via the second copper bar, and the output end of the lightning arrester is connected to a grounding lead. By mounting the lightning arrester on the steel bracket on a side of the isolating switch away from the circuit breaker, the output end of the isolating switch is connected to the second copper bar, the input end of the lightning arrester is electrically connected to the output end of the isolating switch via the second copper bar, and the output end of the lightning arrester is connected to a grounding lead, the second copper bar, the lightning arrester, and the grounding lead can provide additional overvoltage protection, thereby enhancing the safety of the device during use.

[0011] Preferably, the steel support includes a support column fixed to the top of the base, a support plate fixed to the top of the support column, and the disconnector is mounted on the support plate. The steel support includes a support column fixed to the top of the base, and a support plate fixed to the top of the support column. The support plate and support column can further improve the stability and safety of the device during use.

[0012] Preferably, the pillar is equipped with a main knife electric mechanism and a ground knife electric mechanism located on the left and right sides of the support plate, and the main knife electric mechanism and the ground knife electric mechanism are respectively equipped with a main knife vertical transmission connecting rod and a ground knife vertical transmission connecting rod, and the main knife vertical transmission connecting rod and the ground knife vertical transmission connecting rod are respectively connected to the main knife and the ground knife that are compatible with the isolation switch. By installing the main knife electric mechanism and the ground knife electric mechanism on the left and right sides of the support plate on the pillar, and installing the main knife vertical transmission connecting rod and the ground knife vertical transmission connecting rod respectively on the main knife electric mechanism and the ground knife electric mechanism, and the main knife vertical transmission connecting rod and the ground knife vertical transmission connecting rod are respectively connected to the main knife and the ground knife that are compatible with the isolation switch, the main knife electric mechanism, the ground knife electric mechanism, the main knife vertical transmission connecting rod, the ground knife vertical transmission connecting rod, the main knife and the ground knife can realize electric operation of the isolation switch, thereby improving the convenience of operation.

[0013] Preferably, the isolating switch is provided with an operating mechanism box, and the isolating switch and the control cabinet are electrically connected via the terminal blocks of the operating mechanism box. By providing the isolating switch with an operating mechanism box, the isolating switch and the control cabinet are electrically connected via the terminal blocks of the operating mechanism box. The operating mechanism box not only facilitates the electrical connection between the isolating switch and the control cabinet, but also facilitates the control cabinet's control of the isolating switch.

[0014] Preferably, a grounding terminal is fixedly attached to the outer wall of the support, and the end of the grounding lead away from the lightning arrester and the grounding wire of the disconnector are connected to the grounding terminal via the support. By fixing the grounding terminal to the outer wall of the support and connecting the end of the grounding lead away from the lightning arrester and the grounding wire of the disconnector via the support, the lightning arrester and the disconnector can be grounded, ensuring safe grounding of the device and reducing the risk of electrical accidents.

[0015] The beneficial effects of the present invention are as follows: a base is provided, and a control cabinet is installed on the top of the base, and an isolating switch and a circuit breaker fixed to the top of the base are provided on the left and right sides of the control cabinet, the output end of the isolating switch is connected to a first copper busbar, and the input terminal of the isolating switch and the circuit breaker are electrically connected through the first copper busbar. The isolating switch and the circuit breaker are both electrically connected to the control cabinet. When the device is in use, it is necessary to first move the device, transport it to the construction and installation location, and place it on the prefabricated foundation. After that, the external cables are respectively connected to the external terminal board of the isolating switch, the outlet board of the circuit breaker and the control cabinet, so that the device is electrically connected to the external cables. This makes it convenient to prefabricate the device in the factory in advance and then transport it to the construction site for installation, thereby reducing the workload during equipment installation and improving the overall construction speed of the substation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of the utility model;

[0017] Figure 2 for Figure 1 Middle AA structure cross-sectional view;

[0018] Figure 3 for Figure 1 Cross-sectional view of the structure of the middle BB part;

[0019] Figure 4 This is a top view of the structure of the utility model;

[0020] As shown in the figure:

[0021] 1. Second copper busbar, 2. Lightning arrester, 3. Grounding lead, 4. Main cutter vertical transmission connecting rod, 5. Main cutter electric mechanism, 6. Grounding terminal, 7. Disconnector, 8. First copper busbar, 9. Copper busbar expansion joint, 10. Pillar, 11. Control cabinet, 12. Operating mechanism box, 13. Base, 14. Circuit breaker, 15. Support plate, 16. Ground cutter vertical transmission connecting rod, 17. Ground cutter electric mechanism, 18. Ground cutter, 19. Pillar insulator, 20. Main cutter. DETAILED DESCRIPTION

[0022] In order to clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.

[0023] like Figure 1-Figure 4 The skid-mounted 35kV switchgear assembly of the present invention shown in the figure includes a base 13, with a control cabinet 11 mounted on top of the base 13. An isolating switch 7 and a circuit breaker 14 fixed to the top of the base 13 are provided on the left and right sides of the control cabinet 11. The output end of the isolating switch 7 is connected to a first copper busbar 8, and the isolating switch 7 is electrically connected to the circuit breaker input terminal 6 through the first copper busbar 8. The isolating switch 7 and the circuit breaker 14 are both electrically connected to the control cabinet 11.

[0024] By fixing a steel bracket to the top of the base 13 and installing the disconnector 7 on the steel bracket, the steel bracket can improve the stability of the device during use and facilitate the installation and maintenance of the disconnector 7. By installing a support insulator 19 on the steel bracket, the first copper bar 8 is pressed against the support insulator 19. The support insulator 19 can improve the stability of the first copper bar 8 during use of the device and prevent the first copper bar 8 from shaking during use. By fixing a copper busbar expansion joint 9 to the end of the first copper bar 8 away from the disconnector 7, and making the first copper bar 8 and the circuit breaker input terminal 6 softly connected through the copper busbar expansion joint 9, the copper busbar expansion joint 9 can facilitate the connection of the first copper bar 8 to the circuit breaker input terminal 6 by the staff, thereby optimizing the electrical connection, reducing contact resistance, and improving the conductive efficiency. By installing a lightning arrester 2 on the steel bracket, located on the side of the disconnector 7 away from the circuit breaker 14, the output end of the disconnector 7 is connected to a second copper busbar 1, the input end of the lightning arrester 2 is electrically connected to the output end of the disconnector 7 via the second copper busbar 1, and the output end of the lightning arrester 2 is connected to a grounding lead 3. The second copper busbar 1, the lightning arrester 2, and the grounding lead 3 can provide additional overvoltage protection, enhancing the safety of the device during use. The steel bracket includes a support 10 fixed to the top of the base 13, and a support plate 15 fixed to the top of the support 10. The support plate 15 and the support 10 can further improve the stability and safety of the device during use. By installing a main knife electric mechanism 5 and a ground knife electric mechanism 17 on the left and right sides of the support plate 15 on the pillar 10, and installing a main knife vertical transmission link 4 and a ground knife vertical transmission link 16 on the main knife electric mechanism 5 and the ground knife electric mechanism 17 respectively, and the main knife vertical transmission link 4 and the ground knife vertical transmission link 16 are respectively connected to the main knife 20 and the ground knife 18 compatible with the disconnector 7, the main knife electric mechanism 5, the ground knife electric mechanism 17, the main knife vertical transmission link 4, the ground knife vertical transmission link 16, the main knife 20 and the ground knife 18 can realize the electric operation of the disconnector 7, thereby improving the convenience of operation. By providing an operating mechanism box 12 on the disconnector 7, the disconnector 7 and the control cabinet 11 are electrically connected through the terminal block in the operating mechanism box 12. The use of the operating mechanism box 12 not only makes it convenient for the staff to electrically connect the disconnector 7 and the control cabinet 11, but also makes it convenient for the staff to use the control cabinet 11 to control the disconnector 7. By attaching a grounding terminal 6 to the outer wall of the support 10 and connecting the grounding lead 3, located away from the end of the arrester 2 and the grounding wire of the disconnector 7, to the grounding terminal 6 through the support 10, the arrester 2 and the disconnector 7 can be grounded, ensuring safe grounding of the device and reducing the risk of electrical accidents. By providing a dedicated grounding point on the base 13 and connecting the device to the station grounding main grid through the dedicated grounding point, the control cabinet 11, operating mechanism box 12, and circuit breaker 14 are also connected to the station grounding main grid through the base 13 and the dedicated grounding point, ensuring safe grounding of the device during use.

[0025] Combined with attachment Figure 1-4 It can be seen that the method of using the present invention is as follows: first, the device needs to be transported, delivered to the construction and installation location, and placed on a prefabricated foundation, and then the external cables are respectively connected to the external terminal board of the isolating switch 7, the outlet board of the circuit breaker 14 and the control cabinet 11, so that the device is electrically connected to the external cable, and the main knife electric mechanism 5 is controlled to drive the vertical connecting rod of the main knife 20, and the main knife 20 is driven to move so that the isolating switch 7 is energized. When the isolating switch 7 on the device needs to be inspected and maintained, it is necessary to first control the main knife electric mechanism 5 to drive the vertical connecting rod of the main knife 20, and drive the main knife 20 to move to cut off the power to the isolating switch 7, and then control the ground knife electric mechanism 17 to drive the ground knife vertical transmission connecting rod 16, and drive the ground knife 18 to move, so that the isolating switch 7 is grounded.

[0026] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved through or by adopting existing technologies, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.

Claims

1. A skid-mounted 35KV switchgear assembly, characterized by: The utility model comprises a base (13), a control cabinet (11) is installed on the top of the base (13), an isolating switch (7) and a circuit breaker (14) fixed to the top of the base (13) are provided on the left and right sides of the control cabinet (11), an output end of the isolating switch (7) is connected to a first copper bar (8), the isolating switch (7) and the input terminal of the circuit breaker (14) are electrically connected through the first copper bar (8), and the isolating switch (7) and the circuit breaker (14) are both electrically connected to the control cabinet (11).

2. The skid-mounted 35KV switchgear assembly according to claim 1 is characterized in that: A steel bracket is fixed to the top of the base (13), and the disconnector (7) is mounted on the steel bracket.

3. The skid-mounted 35KV switchgear assembly according to claim 2, characterized in that: A support insulator (19) is installed on the steel support, and the first copper bar (8) is pressed on the support insulator (19).

4. The skid-mounted 35KV switchgear assembly according to claim 3 is characterized in that: A copper busbar expansion joint (9) is fixedly connected to one end of the first copper bar (8) away from the disconnector (7), and the first copper bar (8) is softly connected to the input terminal of the circuit breaker (14) via the copper busbar expansion joint (9).

5. The skid-mounted 35KV switchgear assembly according to claim 4, characterized in that: The steel bracket is provided with a lightning arrester (2) located on a side of the isolating switch (7) away from the circuit breaker (14), the output end of the isolating switch (7) is connected to a second copper busbar (1), the input end of the lightning arrester (2) is electrically connected to the output end of the isolating switch (7) via the second copper busbar (1), and the output end of the lightning arrester (2) is connected to a grounding lead (3).

6. The skid-mounted 35KV switch assembly according to claim 5, characterized in that: The steel bracket comprises a pillar (10) fixedly connected to the top of the base (13), a support plate (15) is fixedly connected to the top of the pillar (10), and the disconnector (7) is arranged on the support plate (15).

7. The skid-mounted 35KV switchgear assembly according to claim 6, characterized in that: The pillar (10) is provided with a main knife electric mechanism (5) and a ground knife electric mechanism (17) located on the left and right sides of the support plate (15), and the main knife electric mechanism (5) and the ground knife electric mechanism (17) are respectively provided with a main knife vertical transmission connecting rod (4) and a ground knife vertical transmission connecting rod (16), and the main knife vertical transmission connecting rod (4) and the ground knife vertical transmission connecting rod (16) are respectively connected with a main knife (20) and a ground knife (18) adapted to the isolating switch (7).

8. The skid-mounted 35KV switch assembly according to claim 4, characterized in that: An operating mechanism box (12) is provided on the isolating switch (7), and the isolating switch (7) is electrically connected to the control cabinet (11) via a terminal block of the operating mechanism box (12).

9. The skid-mounted 35KV switchgear assembly according to claim 6, characterized in that: A grounding terminal (6) is fixedly connected to the outer wall of the support (10), and the grounding lead (3) is connected to the grounding terminal (6) via the support (10) at one end away from the lightning arrester (2) and the grounding wire of the disconnector (7).

Images