High-voltage switch cabinet capable of being remotely controlled

Abstract

The utility model discloses a high-voltage switch cabinet capable of being remotely controlled in the technical field of electrical equipment, which comprises a box body, an instrument chamber, a bus chamber, a first handcart chamber, a second handcart chamber and a cable chamber are arranged in the box body, the first handcart chamber is positioned right above the second handcart chamber, and the cable chamber is positioned right above the second handcart chamber. The first handcart chamber and the second handcart chamber are arranged in the box body, the first handcart chamber and the second handcart chamber are arranged in the box body, the first handcart chamber and the second handcart chamber are arranged in the box body, the first handcart chamber and the second handcart chamber are mutually independent and have similar structures, and the bus side contacts and the wire outlet side contacts are fixedly arranged in the first handcart chamber and the second handcart chamber. The two handcart chambers are respectively provided with a bus side contact, a wire outlet side contact, a controller, an insulation baffle plate and other key components, so that when the first handcart chamber fails to be normally disconnected, the second handcart chamber can be used to timely cut off a circuit. The circuit fault processing capability is enhanced, safe and stable operation of an electric power system is guaranteed, and dangers caused by the fact that the circuit cannot be cut off due to faults are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical equipment, in particular to a high-voltage switch cabinet capable of remote control. Background Art

[0002] High-voltage switchgear is used for switching, controlling, or protecting power systems in power generation, transmission, distribution, conversion, and consumption. It features functions such as overhead incoming and outgoing lines, cable incoming and outgoing lines, and busbar interconnection. It is primarily suitable for a variety of applications, including power plants, substations, petrochemicals, metallurgy, steel rolling, light industry, textiles, factories, mines, residential communities, and high-rise buildings.

[0003] The existing patent publication number is CN204633474U, which discloses a high-voltage switchgear remote monitoring system, including a remote server and several high-voltage switchgears, each of which communicates wirelessly with the remote server; the high-voltage switchgear includes a cabinet body, and a controller, a wireless communication unit, a grounding switch, an isolation plate, a current detection chip, a relay, and a locking mechanism arranged in the cabinet body; the controller is respectively connected to the wireless communication unit, the grounding switch, the relay, and the current detection chip; the locking mechanism is arranged on one side of the isolation plate, and is switched on and off by the relay, thereby controlling the locking state of the isolation plate; the relay receives the control signal of the current detection chip and the controller, and controls the switching of the locking mechanism. The high-voltage switchgear remote monitoring system proposed in this utility model can improve the safety of the switchgear. This utility model connects multiple high-voltage switchgears to the server, can obtain the status of each high-voltage switchgear, and can remotely control the high-voltage switchgear.

[0004] The existing high-voltage switchgear remote monitoring system has obvious shortcomings compared to previous solutions, among which the problem of single protection function is particularly prominent. It only has a grounding switch and a design based on a current detection chip to control the locking mechanism, but lacks multiple functions such as insulator protection for the busbar room, branch busbar design, line lightning arrester protection for lightning strikes in the cable room, and zero-sequence current leakage protection. Under complex actual working conditions, it is impossible to effectively deal with situations such as lightning overvoltage and leakage, which can easily damage the electrical components in the switchgear, affect the stable operation of the entire high-voltage switchgear, and greatly reduce the protection capabilities of the switchgear. To this end, we propose a remotely controllable high-voltage switchgear to solve the above-mentioned problems. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and in the abstract and title of the present invention to avoid obscuring the purpose of this section, the abstract and the title of the utility model, and such simplifications or omissions shall not be used to limit the scope of the present invention.

[0006] Therefore, the purpose of the present utility model is to provide a remotely controllable high-voltage switchgear, which can solve the obvious deficiencies of the existing high-voltage switchgear remote monitoring system compared with previous solutions, among which the problem of single protection function is particularly prominent. It only has a grounding switch and a design based on a current detection chip to control the locking mechanism, but lacks multiple functions such as insulator protection for the busbar room, branch busbar design, line lightning arrester protection for lightning strikes, zero-sequence current device leakage protection, etc. in the previous solution. Under complex actual working conditions, it is impossible to effectively deal with situations such as lightning overvoltage and leakage, which can easily damage the electrical components in the switchgear, affect the stable operation of the entire high-voltage switchgear, and greatly reduce the protection capability of the switchgear.

[0007] In order to solve the above technical problems, the present invention provides a remotely controllable high-voltage switchgear, which adopts the following technical solution: it includes a box body, an instrument room, a busbar room, a first trolley room, a second trolley room, and a cable room are provided inside the box body, the first trolley room is located directly above the second trolley room, busbar side contacts and outgoing line side contacts are fastenedly installed inside the first trolley room and the second trolley room, the busbar side contacts are located directly above the outgoing line side contacts, isolation plates are fastenedly installed inside the first trolley room and the second trolley room, an isolation door is axially connected and installed directly behind the isolation plate, controllers are fastenedly installed inside the first trolley room and the second trolley room, and an insulating baffle is movably installed inside the controller.

[0008] Optionally, a door panel is axially connected and installed in front of the first cart chamber and the second cart chamber, and a number of limit rails are fixedly installed inside the first cart chamber and the second cart chamber. A groove is provided at the bottom of the first cart chamber and the second cart chamber, and a transmission rod is axially connected and installed inside the groove. A transmission block is movably installed on the transmission rod, and the transmission rod is connected to the front of the box. An electric push rod is fixedly installed on the isolation plate, and a cart-type circuit breaker is movably installed inside the first cart chamber and the second cart chamber.

[0009] Optionally, a plurality of static contacts are fastened and installed directly in front of the trolley-type circuit breaker, and the static contacts realize the connection between the bus side contacts and the outgoing line side contacts. A first limit block is fastened and installed directly above the trolley-type circuit breaker, and a second limit block is fastened and installed directly below the trolley-type circuit breaker. The electric push rod applies force to the first limit block to achieve displacement control and mechanical motion matching, and the transmission block drives the second limit block through the transmission rod to complete the corresponding action.

[0010] Optionally, the instrument room is located at the upper front of the box, the busbar room is located at the upper rear of the box, the first cart room and the second cart room are located in the middle of the box, and the cable room is located at the lower part of the box. A display device is fastened to the front of the instrument room, and several control buttons are fastened to the bottom of the display device. A central controller is fastened to the inside of the instrument room.

[0011] Optionally, several main busbars are fastened and installed in the busbar chamber, several insulators are fastened and installed on the main busbars, branch busbars are fastened and installed on the main busbars, and the branch busbars are respectively connected to the busbar side contacts in the first car chamber.

[0012] Optionally, several current transformers are fastened and installed directly behind the cable chamber, the outgoing line contacts in the second trolley chamber are connected to the current transformers, and several line lightning arresters are fastened and installed directly below the cable chamber.

[0013] Optionally, a three-phase cable is fastened and installed directly below the cable chamber, the three-phase cable is located directly in front of the line lightning arrester, a zero-sequence current meter is installed around the three-phase cable, and the current transformer is connected to the line lightning arrester and the three-phase cable.

[0014] In summary, the present invention includes at least one of the following beneficial effects: 1. By arranging a first-hand carriage chamber and a second-hand carriage chamber that are independent of each other and have similar structures in the box body, key components such as bus side contacts, outgoing line side contacts, controllers, and insulating baffles are installed in both carriage chambers, so that when a fault occurs in the first-hand carriage chamber that cannot be disconnected normally, the purpose of using the second-hand carriage chamber to cut off the circuit in time is achieved, thereby achieving the effect of enhancing the circuit fault handling capability, ensuring the safe and stable operation of the power system, and avoiding dangers caused by the inability to cut off the circuit due to faults.

[0015] 2. By installing main busbars and branch busbars with insulators in the busbar room to provide stable power supply for the circuit, and installing current transformers, line lightning arresters, three-phase cables and zero-sequence current meters in the cable room for monitoring and protection, the purpose of stabilizing power transmission, monitoring circuit conditions, and protecting against lightning and leakage is achieved, thereby ensuring the normal operation of the circuit and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the overall cross-sectional structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the overall cross-sectional side view of the present invention;

[0020] Figure 4 This is a partial right rear structural diagram of the utility model;

[0021] Figure 5 It is a partial left front schematic diagram of the present invention.

[0022] Explanation of the accompanying symbols: 1. Box body; 2. Instrument room; 3. Busbar room; 4. First trolley room; 5. Second trolley room; 6. Cable room; 7. Busbar side contact; 8. Outgoing line side contact; 9. Isolation plate; 10. Isolation door; 11. Controller; 12. Insulation baffle; 13. Door panel; 14. Limit track; 15. Groove; 16. Transmission rod; 17. Transmission block; 18. Electric push rod; 19. Trolley type circuit breaker; 20. Static contact; 21. First limit block; 22. Second limit block; 23. Display device; 24. Control button; 25. Central controller; 26. Main busbar; 27. Insulator; 28. Branch busbar; 29. ​​Current transformer; 30. Line lightning arrester; 31. Three-phase cable; 32. Zero-sequence current meter. DETAILED DESCRIPTION

[0023] The following is combined with Figure 1-5 The utility model is described in further detail.

[0024] Example 1, refer to Figure 1-5 In this embodiment, in order to solve the obvious shortcomings of the existing high-voltage switchgear remote monitoring system compared with the previous solutions, the problem of single protection function is particularly prominent. It only has a grounding switch and a design based on a current detection chip to control the locking mechanism, but lacks multiple functions such as insulator protection for the busbar room, branch busbar design, line lightning arrester protection for lightning strikes, zero-sequence current device leakage protection in the cable room, etc. Under complex actual working conditions, it is impossible to effectively deal with situations such as lightning overvoltage and leakage, which can easily damage the electrical components in the switchgear, affect the stable operation of the entire high-voltage switchgear, and greatly reduce the protection ability of the switchgear. The utility model discloses a remotely controllable high-voltage switchgear,

[0025] The box body 1 includes an instrument room 2, a busbar room 3, a first-hand car room 4, a second-hand car room 5, and a cable room 6. The first-hand car room 4 is located directly above the second-hand car room 5. Busbar side contacts 7 and outgoing line side contacts 8 are fixedly installed inside the first-hand car room 4 and the second-hand car room 5. The busbar side contacts 7 are located directly above the outgoing line side contacts 8. Isolation plates 9 are fixedly installed inside the first-hand car room 4 and the second-hand car room 5. An isolation door 10 is axially connected and installed directly behind the isolation plate 9. A controller 11 is fixedly installed inside the first-hand car room 4 and the second-hand car room 5. An insulating baffle 12 is movably installed inside the controller 11. The device is equipped with an instrument room 2, a busbar room 3, a first and second car compartments 4 and 5 distributed vertically, and a cable room 6 in the box 1, busbar side contacts 7 and outgoing line side contacts 8 are installed in each car compartment, and there are isolation plates 9 and axially connected isolation doors 10. A movable insulating baffle 12 is also installed in the controller 11, which realizes the reasonable division of various functional areas, achieves the purpose of effectively isolating different voltage parts, protecting the safety of operators, and facilitating inspection and maintenance, while ensuring the stability and safety of circuit connections.

[0026] The first and second handcart compartments 4 and 5 are both axially connected and installed with door panels 13 in front of the box body 1. Several limit rails 14 are fixedly installed inside the first and second handcart compartments 4 and 5. A groove 15 is provided just below the first and second handcart compartments 4 and 5. A transmission rod 16 is axially connected and installed inside the groove 15. A transmission block 17 is movably installed on the transmission rod 16. The transmission rod 16 is connected to the front of the box body 1. An electric push rod 18 is fastened to the isolation plate 9. A handcart-type circuit breaker 19 is movably installed inside the first and second handcart compartments 4 and 5. A door panel 13 is axially connected to the box body 1, a limiting track 14 is installed inside, a transmission rod 16 and a movable transmission block 17 connected to the front of the box body 1 are installed in the lower groove 15 inside, an electric push rod 18 is installed on the isolation plate 9 and a trolley-type circuit breaker 19 is installed inside, and when the electric push rod 18 fails, the transmission rod 16 can be used to move the transmission block 17, thereby achieving the purpose of protecting the interior of the trolley room, ensuring the stable movement of the trolley-type circuit breaker 19, facilitating operation from the front of the box body 1, and enabling the trolley-type circuit breaker 19 to be safely withdrawn when the electric push rod 18 fails, thereby improving equipment safety, enhancing operational convenience and emergency handling capabilities.

[0027] There are several static contacts 20 fastened in front of the trolley circuit breaker 19. The static contacts 20 realize the connection between the bus side contact 7 and the outgoing side contact 8. A first limit block 21 is fastened directly above the trolley circuit breaker 19. A second limit block 22 is fastened directly below the trolley circuit breaker 19. The electric push rod 18 applies force to the first limit block 21 to achieve displacement control and mechanical movement matching. The transmission block 17 drives the second limit block 22 through the transmission rod 16 to complete the corresponding action. By installing several static contacts 20 in front of the trolley circuit breaker 19 The static contact 20 realizes the connection between the bus side contact 7 and the outgoing side contact 8. The first limit block 21 and the second limit block 22 are respectively installed above and below the trolley type circuit breaker 19. The electric push rod 18 is used to apply force to the first limit block 21, and the transmission block 17 drives the second limit block 22 through the transmission rod 16, thereby achieving the purpose of accurately connecting the circuit, effectively controlling the displacement of the trolley type circuit breaker 19 and matching its mechanical movement with the control, and realizing the effect of ensuring the reliability of the circuit connection and improving the accuracy and stability of the operation of the trolley type circuit breaker 19.

[0028] The instrument room 2 is located at the upper front of the box body 1, the busbar room 3 is located at the upper rear of the box body 1, the first car room 4 and the second car room 5 are located in the middle of the box body 1, and the cable room 6 is located at the lower part of the box body 1. A display device 23 is fastened to the front of the instrument room 2, and a number of control buttons 24 are fastened to the bottom of the display device 23. A central controller 25 is fastened to the inside of the instrument room 2. By placing the instrument room 2 at the upper front of the box body 1, the busbar room 3 at the upper rear, the first car room 4 and the second car room 5 in the middle, and the cable room 6 at the bottom, and installing the display device 23 in front of the instrument room 2, installing a number of control buttons 24 below it, and installing the central controller 25 in the instrument room 2, the purpose of rationally arranging the functional rooms, facilitating viewing of equipment information and operation control, and realizing centralized control is achieved, and the effect of optimizing the equipment structure, improving operation convenience and control efficiency is achieved.

[0029] Several main busbars 26 are fastened and installed through the busbar chamber 3, several insulators 27 are fastened and installed on the main busbars 26, and branch busbars 28 are fastened and installed on the main busbars 26. The branch busbars 28 are respectively connected to the busbar side contacts 7 in the first car chamber 4. By installing several main busbars 26 through the busbar chamber 3, installing insulators 27 and branch busbars 28 on the main busbars 26, and connecting the branch busbars 28 to the busbar side contacts 7 of the first car chamber 4, the purpose of stably supporting and fixing the busbar, effectively insulating, and realizing reasonable power supply from the busbar to the busbar side contacts 7 of the first car chamber 4 is achieved, thereby ensuring the safe and reliable electrical performance of the busbar chamber 3 and ensuring stable transmission of electric energy.

[0030] Several current transformers 29 are fastened and installed directly behind the cable chamber 6, the outgoing side contacts 8 in the second hand car chamber 5 are connected to the current transformers 29, and several line lightning arresters 30 are fastened and installed directly below the cable chamber 6. By fastening and installing several current transformers 29 directly behind the cable chamber 6, connecting the outgoing side contacts 8 of the second hand car chamber 5 to the current transformers 29, and fastening and installing several line lightning arresters 30 directly below the cable chamber 6, the purpose of accurately measuring the circuit current, realizing the monitoring of the outgoing side current, and protecting the cable chamber 6 from the influence of lightning overvoltage is achieved, thereby achieving the effect of improving the circuit operation monitoring capability and enhancing the lightning protection safety of the cable chamber 6.

[0031] A three-phase cable 31 is fastened and installed directly below the cable chamber 6. The three-phase cable 31 is located directly in front of the line lightning arrester 30. A zero-sequence current meter 32 is installed on the periphery of the three-phase cable 31. The current transformer 29 is connected to the line lightning arrester 30 and the three-phase cable 31. By fastening and installing the three-phase cable 31 directly below the cable chamber 6, placing it directly in front of the line lightning arrester 30, and installing the zero-sequence current meter 32 on the periphery of the three-phase cable 31, and connecting the current transformer 29 to the line lightning arrester 30 and the three-phase cable 31, the purpose of stable transmission of electric energy, monitoring leakage, realizing lightning protection and providing a reasonable circuit layout for the connection of related equipment is achieved, thereby ensuring the safety of power transmission in the cable chamber 6 and improving the fault monitoring capability.

[0032] The specific working principle is as follows: by setting up a first car compartment 4 and a second car compartment 5 that are independent of each other and have similar structures in the box body 1, and installing key components such as busbar side contacts 7, outgoing line contacts 8, controllers 11, and insulating baffles 12 in both car compartments, the purpose of using the second car compartment 5 to promptly cut off the circuit when a fault occurs in the first car compartment 4 that cannot be normally disconnected is achieved, thereby achieving the effect of enhancing the circuit fault handling capability, ensuring the safe and stable operation of the power system, and avoiding the danger caused by the inability to cut off the circuit due to a fault. By installing a main busbar 26 and a branch busbar 28 with insulators 27 in the bus compartment 3 to provide stable power supply for the circuit, and installing a current transformer 29, a line lightning arrester 30, a three-phase cable 31, and a zero-sequence current meter 32 in the cable compartment 6 for monitoring and protection, the purpose of stabilizing power transmission, monitoring circuit conditions, and protecting against lightning strikes and leakage is achieved, and the effect of ensuring the normal operation of the circuit and improving safety is achieved.

[0033] The above are all preferred embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the scope of protection of the present invention.

Claims

1. A remotely controllable high-voltage switchgear, comprising a box (1), characterized in that: The box body (1) is provided with an instrument room (2), a busbar room (3), a first trolley room (4), a second trolley room (5), and a cable room (6). The first trolley room (4) is located directly above the second trolley room (5). Busbar side contacts (7) and outgoing line side contacts (8) are fixedly installed in the first trolley room (4) and the second trolley room (5). The busbar side contacts (7) are located directly above the outgoing line side contacts (8). Isolation plates (9) are fixedly installed in the first trolley room (4) and the second trolley room (5). An isolation door (10) is axially connected and installed directly behind the isolation plate (9). A controller (11) is fixedly installed in the first trolley room (4) and the second trolley room (5). An insulating baffle (12) is movably installed in the controller (11).

2. The remotely controllable high-voltage switchgear according to claim 1, characterized in that: The first trolley chamber (4) and the second trolley chamber (5) are both axially connected and installed with a door panel (13) located on the box body (1), and the first trolley chamber (4) and the second trolley chamber (5) are both fastened and installed with a plurality of limit rails (14), and the first trolley chamber (4) and the second trolley chamber (5) are both provided with a groove (15) at the bottom thereof, and a transmission rod (16) is axially connected and installed inside the groove (15), and a transmission block (17) is movably installed on the transmission rod (16), and the transmission rod (16) is connected to the front of the box body (1), and an electric push rod (18) is fastened and installed on the isolation plate (9), and a trolley-type circuit breaker (19) is movably installed inside the first trolley chamber (4) and the second trolley chamber (5).

3. The remotely controllable high-voltage switchgear according to claim 2, characterized in that: A plurality of static contacts (20) are fastened and installed in front of the trolley-type circuit breaker (19), and the static contacts (20) realize the connection between the busbar-side contact (7) and the outgoing-line-side contact (8). A first limit block (21) is fastened and installed directly above the trolley-type circuit breaker (19), and a second limit block (22) is fastened and installed directly below the trolley-type circuit breaker (19). The electric push rod (18) applies force to the first limit block (21) to achieve displacement control and mechanical motion matching, and the transmission block (17) drives the second limit block (22) through the transmission rod (16) to complete the corresponding action.

4. The remotely controllable high-voltage switchgear according to claim 1, characterized in that: The instrument room (2) is located at the upper front of the box (1), the busbar room (3) is located at the upper rear of the box (1), the first trolley room (4) and the second trolley room (5) are located in the middle of the box (1), and the cable room (6) is located at the lower part of the box (1). A display device (23) is fastened and installed in front of the instrument room (2), and a plurality of control buttons (24) are fastened and installed directly below the display device (23). A central controller (25) is fastened and installed inside the instrument room (2).

5. The remotely controllable high-voltage switchgear according to claim 1, characterized in that: A plurality of main busbars (26) are fastened and installed through the busbar chamber (3), a plurality of insulators (27) are fastened and installed on the main busbars (26), branch busbars (28) are fastened and installed on the main busbars (26), and the branch busbars (28) are respectively connected to the busbar side contacts (7) in the first handcart chamber (4).

6. The remotely controllable high-voltage switchgear according to claim 1, characterized in that: A plurality of current transformers (29) are fastened and installed directly behind the cable chamber (6); the outgoing line contacts (8) in the second trolley chamber (5) are connected to the current transformers (29); and a plurality of line lightning arresters (30) are fastened and installed directly below the cable chamber (6).

7. The remotely controllable high-voltage switchgear according to claim 6, characterized in that: A three-phase cable (31) is fastened and installed directly below the cable chamber (6), the three-phase cable (31) is located directly in front of the line lightning arrester (30), a zero-sequence current meter (32) is installed on the periphery of the three-phase cable (31), and the current transformer (29) is connected to the line lightning arrester (30) and the three-phase cable (31).

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