A smart grid switch cabinet with built-in electric control execution structure and a protection method thereof

Abstract

The application relates to the technical field of switch cabinets, in particular to a smart power grid switch cabinet with an electric control execution structure and a protection method thereof, which comprises a switch cabinet body, multiple groups of arc extinguishing chambers, multiple groups of insulation columns, deflection conductive arms and conductive parts installed on the insulation columns, a sliding structure, a fitting shaft installed on the sliding structure, a trigger plate, a guide groove arranged on the trigger plate, the fitting shaft matched with the guide groove, the deflection conductive arms capable of being driven to perform opening and closing actions, a first pulling structure, a first convex shaft rotatably installed on the first pulling structure, a second pulling structure, a second convex shaft rotatably installed on the second pulling structure, a driving device, a rotating disc connected to an output shaft of the driving device, a first driving groove and a second driving groove arranged on the two sides of the rotating disc, the first driving groove and the second driving groove matched with the first convex shaft and the second convex shaft respectively, the movable contact and the sliding structure capable of being driven to act in sequence when the rotating disc rotates, and the use safety improved.

Description

Technical Field

[0001] This invention relates to the field of switchgear technology, specifically to an intelligent power grid switchgear with a built-in electrical control execution structure and its protection method. Background Technology

[0002] As a key node device in the power distribution network system, switchgear undertakes important functions such as power distribution, line protection and isolation. Its operational reliability and safety are directly related to the stable operation of the entire power grid and the personal safety of maintenance personnel.

[0003] In existing technologies, switchgear typically includes a main circuit breaker and a disconnecting switch, both of which must meet stringent "five-proof interlocking" requirements. In particular, it is essential to ensure that the disconnecting switch cannot be operated under load to prevent arcing faults. Traditional solutions often employ a combination of mechanical and electrical systems to achieve sequential control of the circuit breaker tripping sequence: first disconnecting the moving and stationary contacts of the main circuit, then operating the disconnecting switch. However, under complex operating conditions or after prolonged use, these electrical systems may develop timing errors due to control logic failures. This can cause the disconnecting switch to operate before the current is completely cut off, posing a risk of arcing and threatening equipment and personnel safety.

[0004] Furthermore, the contact and separation process of disconnecting switches often involves the sliding and contact of conductive components. Long-term operation can easily lead to scratches and oxide layers on the contact surfaces, resulting in increased contact resistance, excessive temperature rise, and even welding, severely impacting electrical life and operational reliability. Although some intelligent switchgear incorporates electrical control actuators for automated operation, their timing often relies on sensor detection and logic controller judgment, increasing system complexity, cost, and unreliability due to electronic component failures. Summary of the Invention

[0005] The purpose of this invention is to provide a smart power grid switchgear with a built-in electronic control execution structure and its protection method to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: A smart grid switchgear with a built-in electronic control execution structure includes: The switch cabinet body is provided with multiple sets of arc-extinguishing chambers. One end of each arc-extinguishing chamber is fixed with a stationary contact, and the other end is slidably installed with a moving contact. Multiple sets of insulating columns are installed inside the switch cabinet body, and mutually compatible deflecting conductive arms and conductive parts are installed on the insulating columns; A sliding structure is provided on the switch cabinet body, and a fitting shaft is rotatably mounted on the sliding structure; A trigger plate is connected to the deflection conductive arm. The trigger plate is provided with a guide groove. The fitting shaft cooperates with the guide groove and can drive the deflection conductive arm to perform an opening and closing action. A first traction structure is connected to the moving contact, and a first convex shaft is rotatably mounted on the first traction structure; A second traction structure is connected to the sliding structure, and a second convex shaft is rotatably mounted on the second traction structure. A drive device is installed inside the switch cabinet. A rotating disk is connected to the output shaft of the drive device. A first drive groove and a second drive groove are respectively provided on both sides of the rotating disk. The first drive groove and the second drive groove cooperate with the first convex shaft and the second convex shaft respectively, so that the moving contact and the sliding structure can be driven to move sequentially when the rotating disk rotates.

[0007] The intelligent power grid switchgear with built-in electronic control execution structure as described above: the first drive slot includes a first inclined slot and a first arc-shaped slot disposed on one side of the rotating disk, the first inclined slot and the first arc-shaped slot are connected, and the center of the first arc-shaped slot coincides with the central axis of the rotating disk; The first traction structure includes an insulating bracket fixedly connected to the moving contact. The insulating bracket is rotatably connected to the first convex shaft. When the first convex shaft moves along the first inclined groove, the moving contact can move relative to the stationary contact.

[0008] The intelligent power grid switchgear with built-in electronic control execution structure as described above: the second drive slot includes a second arc-shaped slot and a first straight slot disposed on the other side of the rotating disk, the second arc-shaped slot is connected to the first straight slot, and the center of the second arc-shaped slot coincides with the central axis of the rotating disk; The second traction structure includes a traction rod disposed within the switch cabinet body, one end of the traction rod being rotatably connected to the second convex shaft, and the other end of the traction rod being connected to the sliding structure; When the first convex shaft rolls in the first inclined groove, the second convex shaft rolls in the second arc-shaped groove.

[0009] The intelligent power grid switchgear with built-in electronic control execution structure as described above: the sliding structure includes a guide installed in the switchgear body and a sliding member slidably installed on the guide, the sliding member being rotatably connected to the fitting shaft.

[0010] The intelligent power grid switchgear with built-in electronic control execution structure as described above also includes: A mounting plate is connected to the insulating column. The mounting plate is provided with an elastic hinge structure, and the conductive part is disposed on the elastic hinge structure. A support structure is provided on the mounting plate. The support structure is connected to the sliding member through a first cylindrical spring. The support structure cooperates with the elastic hinge structure to enable the conductive part to move away from the deflection conductive arm. When the sliding member moves, the fitting shaft engages with the guide groove, which can sequentially drive the support structure and the deflection conductive arm to move.

[0011] The intelligent power grid switchgear with built-in electronic control execution structure as described above: the guide groove includes a second inclined groove and a second straight groove disposed on the trigger plate, the second inclined groove and the second straight groove being connected; When the fitting shaft rolls within the second inclined groove, the deflecting conductive arm can perform an opening and closing action.

[0012] The intelligent power grid switchgear with built-in electronic control execution structure as described above: the elastic hinge structure includes two sets of hinge arms rotatably mounted on the mounting plate, and one end of the hinge arm away from its rotation center is connected to the conductive part; The elastic hinge structure also includes a second cylindrical spring that is rotatably connected to the two sets of hinge arms.

[0013] The intelligent power grid switchgear with built-in electronic control execution structure as described above: the support structure includes a slide groove on the mounting plate, a slider is slidably installed in the slide groove, and two sets of abutment wheels are symmetrically and rotatably installed on the slider. The abutment wheels cooperate with the abutment surface provided on the inner side of the hinge arm, which can change the angle between the two sets of hinge arms.

[0014] A method for protecting power supply lines using a smart grid switchgear with the aforementioned built-in electronic control execution structure includes the following steps: Step 1: When a power supply line fault requires disconnection protection, the drive device will operate, driving the connected rotating disk to rotate; Step 2: During the rotation of the rotating disk, the first drive groove and the first convex shaft, and the second drive groove and the second convex shaft cooperate to drive the moving contact and the sliding structure to move in sequence; Step 3: When the sliding structure moves, the first cylindrical spring pulls the support structure to move, so that the conductive part can move away from the deflection conductive arm. Step 4: The sliding structure continues to operate, causing the deflecting conductive arm to deflect away from the conductive part.

[0015] Compared with the prior art, the beneficial effects of the present invention are: By setting up a sliding structure, a first pulling structure, a second pulling structure, and a driving device, strict timing control of the separation of the moving contact and the action of the sliding structure is achieved: the conductive part and the deflecting conductive arm only perform subsequent actions after the circuit is completely disconnected, thereby eliminating the risk of electric arc caused by live operation. This purely mechanical timing linkage method does not require the participation of electrical control, has high reliability and strong consistency of action sequence, significantly improves the safety and stability of the switch breaking process, and at the same time reduces electrical wear and extends the service life of the equipment. By employing a flexible hinge structure, support structure, and trigger plate, the design ensures that the end of the deflecting conductive arm never contacts the conductive part during deflection, thus avoiding sliding friction and preventing metal scratches. This not only eliminates oxidation and increased contact resistance caused by surface damage but also significantly improves the reliability and long-term stability of the electrical connection, effectively preventing the risk of poor contact or overheating during welding, while extending the service life of critical moving parts. Attached Figure Description

[0016] Figure 1 This is a structural diagram of a smart power grid switchgear with a built-in electrical control execution structure.

[0017] Figure 2 This is a schematic diagram of the structure of a smart power grid switchgear with the switchgear body removed, which has a built-in electrical control execution structure.

[0018] Figure 3 This is a schematic diagram of the first traction structure and the first drive slot in a smart power grid switchgear with a built-in electronic control execution structure.

[0019] Figure 4 This is a schematic diagram of the second traction structure and the second drive slot in a smart power grid switchgear with a built-in electronic control execution structure.

[0020] Figure 5 This is a schematic diagram of the supporting structure, deflection conductive arm, first cylindrical spring, and second interlocking structure in a smart power grid switchgear with built-in electronic control execution structure.

[0021] Figure 6 This is a schematic diagram of the support structure, deflection conductive arm, and first cylindrical spring in a smart power grid switchgear with built-in electronic control execution structure.

[0022] Figure 7 A schematic diagram of the flexible hinge structure in a smart power grid switchgear with built-in electronic control execution structure.

[0023] Figure 8 This is a schematic diagram of the flexible hinge structure in a smart power grid switchgear with a built-in electronic control execution structure from another angle.

[0024] Figure 9 This is a schematic diagram of the sliding structure, trigger plate, and deflection conductive arm in a smart power grid switchgear with built-in electronic control execution structure.

[0025] In the diagram: 1. Switchgear body; 2. Arc-extinguishing chamber; 201. Moving contact; 3. Insulating support; 4. Drive device; 5. Rotary disk; 501. First inclined groove; 502. First arc-shaped groove; 503. Second arc-shaped groove; 504. First straight groove; 6. First convex shaft; 7. Second convex shaft; 8. Pull rod; 9. Sliding component; 10. Fitting shaft; 11. Guide component; 12. Insulating column; 13. Deflecting conductive arm; 14. Trigger plate; 1401. Second inclined groove; 1402. Second straight groove; 15. First cylindrical spring; 16. Mounting plate; 1601. Slide groove; 17. Slider; 18. Abutment wheel; 19. Hinge arm; 1901. Conductive part; 1902. Abutment surface; 20. Second cylindrical spring. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0027] Please see Figures 1-9 As an embodiment of the present invention, the intelligent power grid switchgear with built-in electronic control execution structure includes: switchgear body 1, insulating column 12, sliding structure, first traction structure, second traction structure and driving device 4.

[0028] The switch cabinet body 1 is provided with multiple sets of arc-extinguishing chambers 2. One end of the arc-extinguishing chamber 2 is fixed with a stationary contact, and the other end is slidably installed with a moving contact 201. Multiple sets of insulating columns 12 are installed inside the switch cabinet body 1, and the insulating columns 12 are equipped with mutually compatible deflecting conductive arms 13 and conductive parts 1901. The first traction structure is connected to the moving contact 201, and a first convex shaft 6 is rotatably mounted on the first traction structure; The second traction structure is connected to the sliding structure, and a second convex shaft 7 is rotatably mounted on the second traction structure; The drive device 4 is installed inside the switch cabinet body 1. A rotating disk 5 is connected to the output shaft of the drive device 4. A first drive groove and a second drive groove are respectively provided on both sides of the rotating disk 5. The first drive groove and the second drive groove cooperate with the first convex shaft 6 and the second convex shaft 7 respectively, so that when the rotating disk 5 rotates, the moving contact 201 and the sliding structure can be driven to move sequentially.

[0029] In this embodiment, in the initial state (circuit connected), the moving contact 201 and the stationary contact maintain reliable contact, while the deflecting conductive arm 13 and the conductive part 1901 are also in stable contact, thereby forming a complete power-on circuit and realizing normal power supply.

[0030] When the circuit requires disconnection protection, the drive device 4 is activated. Through the coordinated operation of the first drive slot and the first traction structure, and the second drive slot and the second traction structure, the mechanical system strictly follows the following action sequence: First, the moving contact 201 is driven to separate from the stationary contact, realizing the disconnection of the main circuit; then, the conductive part 1901 separates from the deflecting conductive arm 13; finally, the deflecting conductive arm 13 performs the deflection action. This sequence ensures that the deflecting conductive arm 13 and its associated components only move after the circuit is completely disconnected, thereby meeting the key requirement of "five-proof interlocking" to prevent the disconnection switch from being opened or closed under load.

[0031] Based on the above configuration, not only is the sequential and reliable operation of each component during the tripping process achieved, effectively eliminating the risk of arcing and burning caused by live disconnection, but the safety of operation and the service life of the equipment are also significantly improved. The overall structure ensures precise timing through a purely mechanical means, enhancing the stability and compliance of the system during protective tripping.

[0032] The specific operations of the moving contact 201, the deflecting conductive arm 13, and the conductive part 1901 are as follows: Please see Figure 3 The first drive groove includes a first inclined groove 501 and a first arc groove 502 disposed on one side of the rotating disk 5. The first inclined groove 501 and the first arc groove 502 are connected, and the center of the first arc groove 502 coincides with the central axis of the rotating disk 5. The first traction structure includes an insulating bracket 3 fixedly connected to the moving contact 201. The insulating bracket 3 is rotatably connected to the first convex shaft 6. When the first convex shaft 6 moves along the first inclined groove 501, the moving contact 201 can move relative to the stationary contact.

[0033] In the initial state, the first convex shaft 6 is located above the first inclined groove 501. At this time, the insulating bracket 3 is pushed upward, so that the moving contact 201 and the stationary contact are reliably in contact, thereby ensuring that the power supply line is in a normal connected state.

[0034] When the circuit needs to be cut, the drive device 4 is activated, causing the rotating disk 5 to rotate. The first convex shaft 6 then slides down along the first inclined groove 501, pulling the insulating support 3 downward, so that the moving contact 201 smoothly separates from the stationary contact, realizing the circuit breakage. As the rotating disk 5 continues to rotate, the first convex shaft 6 enters the first arc-shaped groove 502. At this time, the insulating support 3 and the moving contact 201 are mechanically locked and stably maintained in the fully separated position, ensuring a reliable and constant insulation distance between the moving and stationary contacts.

[0035] Based on the above settings, a smooth and controllable linear separation motion of the moving contact 201 is achieved during the opening process, and a mechanical lock is provided at the end position of the opening, effectively preventing accidental closure caused by vibration or external force. This structure not only ensures the stability of the opening state, but also enhances the consistency and reliability of the contact separation process, providing a solid mechanical guarantee for the safe disconnection of the line.

[0036] Please see Figure 4 The second drive groove includes a second arc-shaped groove 503 and a first straight groove 504 disposed on the other side of the rotating disk 5. The second arc-shaped groove 503 is connected to the first straight groove 504, and the center of the second arc-shaped groove 503 coincides with the central axis of the rotating disk 5. The second pulling structure includes a pulling rod 8 disposed in the switch cabinet body 1, one end of the pulling rod 8 being rotatably connected to the second convex shaft 7, and the other end of the pulling rod 8 being connected to the sliding structure; In this embodiment, the first convex shaft 6 and the second convex shaft 7 cooperate with the first driving groove and the second driving groove, respectively, to form a mechanical linkage timing control mechanism. When the moving contact 201 begins to separate from the stationary contact, the first convex shaft 6 rolls in the first inclined groove 501, while the second convex shaft 7 rolls in the second arc-shaped groove 503 and is in a locked state, so that the sliding structure is fixed in position, thereby ensuring that the deflection conductive arm 13 remains stationary during the separation of the moving contact 201, and avoiding the generation of an electric arc due to premature action of the deflection conductive arm 13.

[0037] After the moving contact 201 is completely separated from the stationary contact, the first convex shaft 6 enters the first arc-shaped groove 502 and rolls. At this time, the second convex shaft 7 moves into the first straight groove 504 and drives the pull rod 8 to move the sliding structure under its push, thereby causing the conductive part 1901 and the deflecting conductive arm 13 to perform corresponding operations.

[0038] Based on the above settings, strict timing control of the separation of the moving contact 201 and the sliding structure operation is achieved: the conductive part 1901 and the deflecting conductive arm 13 only perform subsequent actions after the circuit is completely disconnected, thereby eliminating the risk of electric arc caused by live operation. This purely mechanical timing linkage method does not require the participation of electrical control, has high reliability and strong consistency of action sequence, significantly improves the safety and stability of the switch breaking process, and at the same time reduces electrical wear and extends the service life of the equipment.

[0039] Please see Figure 6 , Figure 9 The sliding structure is disposed on the switch cabinet body 1, and a fitting shaft 10 is rotatably mounted on the sliding structure. The sliding structure includes a guide 11 installed in the switch cabinet body 1 and a sliding member 9 slidably mounted on the guide 11. The sliding member 9 is rotatably connected to the fitting shaft 10. The trigger plate 14 is connected to the deflection conductive arm 13. The trigger plate 14 is provided with a guide groove. The fitting shaft 10 cooperates with the guide groove and can drive the deflection conductive arm 13 to perform opening and closing actions. The guide groove includes a second inclined groove 1401 and a second straight groove 1402 disposed on the trigger plate 14, wherein the second inclined groove 1401 and the second straight groove 1402 are connected. When the fitting shaft 10 rolls within the second inclined groove 1401, the deflection conductive arm 13 can perform an opening and closing action.

[0040] In this embodiment, the pull rod 8 drives the sliding member 9 to move along the length direction of the guide member 11, driving the fitting shaft 10 to pass sequentially through the second straight groove 1402 and the second inclined groove 1401. When the fitting shaft 10 moves along the second straight groove 1402, the deflection conductive arm 13 is locked and remains stationary. At this time, the conductive part 1901 moves accordingly and gradually moves away from the deflection conductive arm 13. Subsequently, the fitting shaft 10 enters the second inclined groove 1401, the deflection conductive arm 13 begins to deflect, and further moves away from the separated conductive part 1901.

[0041] Based on the above configuration, it is ensured that the end of the deflection conductive arm 13 never contacts the conductive part 1901 when deflection occurs, thereby avoiding sliding friction between the two and preventing metal scratches. This not only eliminates the problems of oxidation and increased contact resistance caused by surface damage, but also significantly improves the reliability and long-term stability of the electrical connection, effectively eliminates the risk of poor contact or overheating during welding, and extends the service life of critical moving parts.

[0042] Please see Figures 6-8 The intelligent power grid switchgear with built-in electronic control execution structure also includes: mounting plate 16 and support structure.

[0043] The mounting plate 16 is connected to the insulating post 12, and the mounting plate 16 is provided with an elastic hinge structure, and the conductive part 1901 is provided on the elastic hinge structure. The elastic hinge structure includes two sets of hinge arms 19 rotatably mounted on the mounting plate 16, with one end of the hinge arm 19 away from its rotation center connected to the conductive part 1901. The elastic hinge structure also includes a second cylindrical spring 20 that is rotatably connected to the two sets of hinge arms 19.

[0044] In the initial connected state of this embodiment, the second cylindrical spring 20 is in a pre-stretched state, and the rebound force it generates continuously acts on the conductive part 1901 through the hinge arm 19, making it stably pressed against the contact surface of the deflecting conductive arm 13. At this time, the hinge arm 19 remains separated from the support structure, and the contact pressure is entirely provided by the spring, thereby forming a reliable electrical connection mechanically.

[0045] The continuous elastic compression of the second cylindrical spring 20 ensures low and stable contact resistance between the conductive part 1901 and the deflection conductive arm 13, guaranteeing the continuity and efficiency of current transmission. Simultaneously, the elastic contact method compensates for component wear, processing errors, and dimensional changes caused by thermal expansion and contraction, maintaining long-term stable contact pressure. This avoids problems such as poor contact, overheating, oxidation, or even ablation due to insufficient pressure, significantly improving the safety and reliability of the power supply circuit during long-term operation.

[0046] Please see Figures 7-8 The support structure is disposed on the mounting plate 16. The support structure is connected to the sliding member 9 through the first columnar spring 15. The support structure cooperates with the elastic hinge structure to enable the conductive part 1901 to move away from the deflection conductive arm 13. When the sliding member 9 moves, the fitting shaft 10 engages with the guide groove, which can sequentially drive the support structure and the deflection conductive arm 13 to move. The support structure includes a slide groove 1601 provided on the mounting plate 16. A slider 17 is slidably installed in the slide groove 1601. Two sets of abutment wheels 18 are symmetrically and rotatably installed on the slider 17. The abutment wheels 18 cooperate with the abutment surface 1902 provided on the inner side of the hinge arm 19, which can change the angle between the two sets of hinge arms 19.

[0047] In this embodiment, initially, the first cylindrical spring 15 is in its natural state. When the fitting shaft 10 moves along the second straight groove 1402, the deflection conductive arm 13 is locked. At this time, the sliding member 9 pulls the slider 17 along the slide groove 1601 through the first cylindrical spring 15. During the movement of the slider 17, the abutment wheel 18 on it acts on the abutment surface 1902 of the hinge arm 19, driving the two sets of hinge arms 19 to deflect outward against the tension of the second cylindrical spring 20, thereby causing the conductive parts 1901 installed on them to move away from each other, achieving smooth separation from the end of the deflection conductive arm 13.

[0048] When the slider 17 moves to the end of the groove 1601, the sliding member 9 continues to move, and the first cylindrical spring 15 is stretched. At the same time, the fitting shaft 10 switches from the second straight groove 1402 to the second inclined groove 1401, the lock is released, and the deflection conductive arm 13 begins to deflect. Since the conductive part 1901 has already separated at this time, the deflection conductive arm 13 deflects in a state of no contact and no friction, which not only significantly reduces the resistance, but also completely avoids mechanical wear between the contact surfaces.

[0049] It should be noted that the stiffness of the first cylindrical spring 15 is much greater than that of the second cylindrical spring 20. This difference in stiffness ensures that during the deflection phase of the drive articulated arm 19, the deformation of the first cylindrical spring 15 is minimal, mainly overcoming the tension of the second cylindrical spring 20. This allows the movement of the slider 17 to be efficiently and accurately converted into the separation action of the articulated arm 19, thereby achieving reliable timing control of separation first and then deflection.

[0050] As an embodiment of the present invention, a method for protecting power supply lines using a smart grid switchgear with the aforementioned built-in electronic control execution structure is also proposed, comprising the following steps: Step 1: When a power supply line fault requires disconnection protection, the drive device 4 will operate, driving the rotating disk 5 connected to it to rotate. Step 2: During the rotation of the rotating disk 5, the first drive groove cooperates with the first convex shaft 6 and the second drive groove cooperates with the second convex shaft 7, thereby driving the moving contact 201 and the sliding structure to move in sequence. Step 3: When the sliding structure moves, the first cylindrical spring 15 pulls the support structure to move, so that the conductive part 1901 can move away from the deflecting conductive arm 13. Step 4: The sliding structure continues to operate, causing the deflecting conductive arm 13 to deflect away from the conductive part 1901.

[0051] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0052] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A smart power grid switchgear with a built-in electronic control execution structure, comprising: The switch cabinet body is provided with multiple sets of arc-extinguishing chambers. One end of each arc-extinguishing chamber is fixed with a stationary contact, and the other end is slidably installed with a moving contact. Multiple sets of insulating columns are installed inside the switch cabinet body, and mutually compatible deflecting conductive arms and conductive parts are installed on the insulating columns; Its characteristic is that it further includes: A sliding structure is provided on the switch cabinet body, and a fitting shaft is rotatably mounted on the sliding structure; A trigger plate is connected to the deflection conductive arm. The trigger plate is provided with a guide groove. The fitting shaft cooperates with the guide groove and can drive the deflection conductive arm to perform an opening and closing action. A first traction structure is connected to the moving contact, and a first convex shaft is rotatably mounted on the first traction structure; A second traction structure is connected to the sliding structure, and a second convex shaft is rotatably mounted on the second traction structure. A drive device is installed inside the switch cabinet. A rotating disk is connected to the output shaft of the drive device. A first drive groove and a second drive groove are respectively provided on both sides of the rotating disk. The first drive groove and the second drive groove cooperate with the first convex shaft and the second convex shaft respectively, so that the moving contact and the sliding structure can be driven to move sequentially when the rotating disk rotates.

2. The intelligent power grid switchgear with built-in electronic control execution structure according to claim 1, characterized in that, The first drive groove includes a first inclined groove and a first arc-shaped groove disposed on one side of the rotating disk. The first inclined groove and the first arc-shaped groove are connected, and the center of the first arc-shaped groove coincides with the central axis of the rotating disk. The first traction structure includes an insulating bracket fixedly connected to the moving contact. The insulating bracket is rotatably connected to the first convex shaft. When the first convex shaft moves along the first inclined groove, the moving contact can move relative to the stationary contact.

3. The intelligent power grid switchgear with built-in electronic control execution structure according to claim 2, characterized in that, The second drive groove includes a second arc-shaped groove and a first straight groove disposed on the other side of the rotating disk. The second arc-shaped groove is connected to the first straight groove, and the center of the second arc-shaped groove coincides with the central axis of the rotating disk. The second traction structure includes a traction rod disposed within the switch cabinet body, one end of the traction rod being rotatably connected to the second convex shaft, and the other end of the traction rod being connected to the sliding structure; When the first convex shaft rolls in the first inclined groove, the second convex shaft rolls in the second arc-shaped groove.

4. The intelligent power grid switchgear with built-in electronic control execution structure according to claim 1, characterized in that, The sliding structure includes a guide installed inside the switch cabinet body and a sliding member slidably installed on the guide, the sliding member being rotatably connected to the fitting shaft.

5. A smart power grid switchgear with a built-in electronic control execution structure according to claim 4, characterized in that, Also includes: A mounting plate is connected to the insulating column. The mounting plate is provided with an elastic hinge structure, and the conductive part is disposed on the elastic hinge structure. A support structure is provided on the mounting plate. The support structure is connected to the sliding member through a first cylindrical spring. The support structure cooperates with the elastic hinge structure to enable the conductive part to move away from the deflection conductive arm. When the sliding member moves, the fitting shaft engages with the guide groove, which can sequentially drive the support structure and the deflection conductive arm to move.

6. A smart power grid switchgear with a built-in electronic control execution structure according to claim 5, characterized in that, The guide groove includes a second inclined groove and a second straight groove disposed on the trigger plate, wherein the second inclined groove and the second straight groove are connected. When the fitting shaft rolls within the second inclined groove, the deflecting conductive arm can perform an opening and closing action.

7. A smart power grid switchgear with a built-in electronic control execution structure according to claim 5, characterized in that, The elastic hinge structure includes two sets of hinge arms rotatably mounted on the mounting plate, with one end of each hinge arm away from its rotation center connected to the conductive part. The elastic hinge structure also includes a second cylindrical spring that is rotatably connected to the two sets of hinge arms.

8. A smart power grid switchgear with a built-in electronic control execution structure according to claim 7, characterized in that, The support structure includes a groove on the mounting plate, in which a slider is slidably mounted. Two sets of abutment wheels are symmetrically and rotatably mounted on the slider. The abutment wheels cooperate with the abutment surfaces located on the inner side of the hinge arms, which can change the angle between the two sets of hinge arms.

9. A method for protecting power supply lines using a smart power grid switchgear with a built-in electronic control execution structure as described in any one of claims 1 to 8, characterized in that, Includes the following steps: Step 1: When a power supply line fault requires disconnection protection, the drive device will operate, driving the connected rotating disk to rotate; Step 2: During the rotation of the rotating disk, the first drive groove and the first convex shaft, and the second drive groove and the second convex shaft cooperate to drive the moving contact and the sliding structure to move in sequence; Step 3: When the sliding structure moves, the first cylindrical spring pulls the support structure to move, so that the conductive part can move away from the deflection conductive arm. Step 4: The sliding structure continues to operate, causing the deflecting conductive arm to deflect away from the conductive part.

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