An automatic recloser and method of use thereof

Abstract

This invention discloses an automatic recloser and its usage method, relating to the field of automatic recloser technology. To address the problem that in existing automatic reclosers, the opening and closing mechanisms are integrated, requiring complete disassembly and replacement when one mechanism malfunctions, leading to inconvenience, the invention includes: a quick-release mechanism comprising a first and a second quick-release plate; an opening module comprising a magnetic opening module and a pneumatic opening module; a closing module comprising a magnetic closing module and a pneumatic closing module; and a motion separation module comprising two movable electrical terminals and a force-bearing column connecting the two terminals. By independently setting the opening and closing mechanisms, disassembling the first quick-release plate will not interfere with the second quick-release plate, thus achieving a modular design. This eliminates the need to disassemble the entire opening and closing mechanism, facilitating future maintenance and making it more convenient to use.

Description

Technical Field

[0001] This invention relates to the field of automatic recloser technology, specifically to an automatic recloser and its usage method. Background Technology

[0002] As a dynamic system, the power system involves simultaneous production, transmission, distribution, and consumption. Transmission lines are crucial components for transmitting electrical energy, and they are prone to failure. Improving the reliability of transmission lines is paramount for the safe operation of the power system. Most transmission lines are installed on towers, which are high above the ground and laid over long distances, making permanent faults caused by human error rare. Most faults are transient, caused by weather, lightning, or short-circuit faults. According to incomplete statistics, 80% to 90% of transmission line faults are transient. These transient faults are mostly caused by flashover on the insulator surface due to lightning, line-to-tree discharge, contact with the conductor due to strong winds, bird damage, falling branches, and contamination of the insulator surface. Once the circuit breaker is tripped by the relay protection, the fault point deionizes, the arc is extinguished, the insulation strength is restored, and the fault resolves itself. Therefore, automatic reclosing was developed. Automatic reclosing is a new type of low-voltage complete power distribution device developed after circuit breakers, disconnectors, and grounding switches. It has the characteristics of flexible and convenient operation; it can realize selective or full protection functions; and it automatically restores power supply after operation without manual operation. However, the opening and closing mechanisms of the automatic recloser are set as one unit. When one set of mechanisms fails, it is necessary to disassemble and replace them as a whole, which is inconvenient to use and operate. Summary of the Invention

[0003] The purpose of this invention is to provide an automatic recloser and its usage method, in order to solve the problem mentioned in the background art that the opening and closing mechanisms of the automatic recloser are set as one unit, and when one set of mechanisms fails, they need to be completely disassembled and replaced, which is inconvenient to use and operate.

[0004] To achieve the above objectives, the present invention provides the following technical solution: an automatic recloser, comprising a housing, an input terminal and an output terminal mounted on the housing outer shell, and a matching circuit monitoring system, further comprising: The quick-release mechanism includes a first quick-release plate and a second quick-release plate; The tripping module includes a magnetic tripping module and a pneumatic tripping module; Closing modules include magnetic closing modules and pneumatic closing modules; The motion separation module includes two movable electrical terminals and a force-bearing column connecting the two electrical terminals. The two electrical terminals are used to energize the input terminal and the output terminal. The magnetic tripping module and the magnetic closing module are used opposite each other on both sides with the force-bearing column as the axis. The pneumatic tripping module and the pneumatic closing module are used opposite each other on both sides with the force-bearing column as the axis. Both the magnetic tripping module and the magnetic closing module adopt electromagnetic ejection technology. Both the pneumatic tripping module and the pneumatic closing module adopt high-pressure air ejection technology. The tripping module is mounted on a first quick-release plate, and the closing module is mounted on a second quick-release plate. The magnetic tripping module includes a first tripping ejector, the magnetic closing module includes a first closing ejector, the pneumatic tripping module includes a second tripping ejector, and the pneumatic closing module includes a second closing ejector. The first and second tripping ejectors move the force-bearing column closer to the closing module, thus separating the power connection terminal from the input and output terminals. The first and second closing ejectors move the force-bearing column closer to the tripping module, thus connecting the power connection terminal to the input and output terminals.

[0005] In a preferred embodiment, the present invention can be further configured as follows: a first push rod is provided on the first tripping ejector, a second push rod is provided on the first closing ejector, the first tripping ejector and the first closing ejector have the same structure, the first tripping ejector includes two parallel insulating frames, an acceleration ejector coil and a deceleration coil are provided on the inner side of the insulating frames, and an armature seat is slidably connected between the two insulating frames.

[0006] In a preferred embodiment, the present invention may be further configured such that: the length of the first push rod is longer than that of the second push rod; the first push rod is connected to the armature seat of the first tripping ejector; the second push rod is connected to the armature seat of the first closing ejector; and push plates are provided at the ends of the first and second push rods near the force-bearing column, with both push plates in contact with the force-bearing column.

[0007] In a preferred embodiment, the present invention may be further configured such that: the second trip ejector includes a cylinder and a piston slidably mounted inside the cylinder, a piston rod is connected to one side of the piston, and an air inlet terminal is fixedly mounted on the cylinder at the end away from the piston rod; the structure of the second closing ejector is the same as that of the second trip ejector, and the piston rod of the second trip ejector is longer than the piston rod of the second closing ejector.

[0008] In a preferred embodiment, the present invention can be further configured as follows: a first bracket is fixedly installed on the side of the first quick-release plate near the inside of the housing, the first bracket is fixedly connected to the first trip ejector, a first fixing plate is fixedly installed on the rear end face of the first bracket, and a secondary distributor, a first processor, a high-power fast switch and a high-voltage large-capacity capacitor bank are respectively installed on the rear end face of the first fixing plate, and the high-voltage large-capacity capacitor bank is electrically connected to the first trip ejector.

[0009] In a preferred embodiment, the present invention may be further configured such that: a second processor, a high-pressure air pump, and a high-pressure air tank are also mounted on the first fixed plate, the high-pressure air tank is connected to the second trip ejector, a second bracket is fixedly mounted on the side of the second quick-release plate near the inside of the housing, a second fixed plate is fixedly mounted on the rear end face of the second bracket, and the equipment mounted on the rear end face of the second fixed plate is the same as the equipment mounted on the rear end face of the first fixed plate.

[0010] In a preferred embodiment, the present invention can be further configured as follows: the housing is provided with a connection terminal connected to the input terminal, and a closing buffer engagement device and a closing buffer engagement device are respectively provided on the side of the housing near the connection terminal. When the circuit is closed, the power-connecting terminal engages with the closing buffer engagement device, and when the circuit is opened, the power-connecting terminal engages with the closing buffer engagement device. Both the closing buffer engagement device and the closing buffer engagement device are provided with buffer rubber inside, and the internal structure of the buffer rubber is provided with multiple honeycomb-shaped circular holes.

[0011] In a preferred embodiment, the present invention may be further configured as follows: an arc extinguisher is provided on the side of the housing near the connecting terminal; a limiting slide bridge is provided between the closing buffer engagement device and the opening buffer engagement device; a sliding groove is provided on the inner side of the limiting slide bridge; a sliding leg is provided on the outer side of the power connection terminal; and the sliding leg is embedded in the inside of the sliding groove and slidably connected to the sliding groove.

[0012] In a preferred embodiment, the present invention can be further configured such that: a first battery cell is disposed inside the power receiving terminal, a third battery cell is disposed inside the force-bearing column, a second battery cell is disposed inside the connecting terminal, and an elastic contact piece is disposed inside the connecting terminal below the second battery cell; when the connecting terminal, the power receiving terminal and the force-bearing column are connected, the second battery cell, the first battery cell and the third battery cell are in contact and energized.

[0013] A method of using an automatic recloser includes the following steps: S1: Monitor the circuit status through an external circuit monitoring system; S2: When a circuit fault occurs, the trip module will quickly disconnect the power terminal from the connection terminal, thereby de-energizing the input and output terminals. S3: After the circuit is disconnected for a period of time, the closing module quickly pushes the force column to move to one side of the opening module, so that the power terminal is connected to the connection terminal and the power is turned on. S4: The circuit status is detected secondary by an external circuit monitoring system; S5: When the circuit fault has been cleared, the power supply will continue, completing the second power-on process; S6: When the circuit fault is not resolved, power is cut off a second time through the tripping module; S7; The continuous power outage time is longer than the previous power outage time. The circuit is powered on again through the secondary power supply of the closing module. S8: The circuit status is checked three times by an external circuit monitoring system; S9: When the circuit fault has been cleared, the power supply will continue, completing three power-on cycles; S10: If the circuit fault is not resolved, the power will be cut off three times through the tripping module, and the closing operation will not be performed until manual intervention is required.

[0014] Compared with the prior art, the beneficial effects of the present invention are: This invention utilizes a modular design to independently set the traditional integrated opening and closing mechanisms into two opposing sets of mechanisms: an opening module and a closing module. These modules are then independently mounted on a first quick-release plate and a second quick-release plate, respectively. This independent setup ensures that disassembling either module will not interfere with the other, thus achieving a modular design that eliminates the need to disassemble the entire opening and closing mechanism. This facilitates future maintenance and makes the device more convenient to use.

[0015] This invention replaces the drive structure of the traditional recloser with a first tripping ejector. It adopts the electromagnetic ejection principle, which can provide a faster separation speed during instantaneous circuit breaking. This improves the separation efficiency and enhances the safety of the circuit when a fault occurs. Furthermore, the rapid separation of the energizing and connecting terminals reduces the amount of electric arc generated, thereby improving the safety of tripping and the safety of the automatic recloser.

[0016] This invention replaces the traditional recloser's drive structure with a second tripping ejector, employing a high-pressure air ejection principle. It operates even in environments with numerous electronic devices and high electromagnetic interference, providing faster separation speeds during instantaneous circuit breaks. Furthermore, it utilizes a more reliable mechanical structure, resulting in a lower failure rate and higher reliability. This improves separation efficiency and circuit safety in case of faults. Additionally, the rapid separation of the electrical and connecting terminals reduces arc generation, further enhancing safety during tripping and improving the overall safety of the automatic recloser.

[0017] This invention, through the setting of a motion separation module, achieves a larger range of motion and higher power-off efficiency compared to traditional closing mechanisms, thus realizing better circuit breaking and closing functions. The motion separation module includes a force-bearing column for movement, electrical terminals and connecting terminals for conduction, and closing buffer bites and opening buffer bites for buffering the impact of movement. The inside of the force-bearing column is an electric core, and the outside is an insulating material. Similarly, the connecting terminals are made of the same material. This eliminates the need for vacuum or oil filling for insulation inside the recloser. The closing buffer bites and opening buffer bites are respectively set at the closing and opening positions to reduce the impact force when the force-bearing column moves, thereby preventing damage to the force-bearing column. At the same time, after the two bites clamp and engage the force-bearing column, they can fix the force-bearing column, prevent the electrical terminals and the force-bearing column from moving, and improve the reliability of use. Attached Figure Description

[0018] Figure 1 This is an overall schematic diagram of an automatic recloser according to the present invention; Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the present invention; Figure 3 This is a schematic diagram of the structure of the first tripping ejector in this invention; Figure 4 This is a schematic diagram of the electronic device according to Embodiment 1 of the present invention; Figure 5 This is a schematic diagram of the structure of Embodiment 2 of the present invention; Figure 6 This is a schematic diagram of the structure of the second tripping ejector in this invention; Figure 7 This is a schematic diagram of the electrical equipment in Embodiment 2 of the present invention; Figure 8 This is an overall schematic diagram of the electrical terminals in this invention; Figure 9 This is a cross-sectional view of the connecting terminal in this invention; Figure 10 This is a schematic diagram of the closing buffer engagement device in this invention; Figure 11 This is a schematic diagram of the overall load-bearing column in this invention.

[0019] In the diagram: 1. Housing; 2. Support column; 3. Support frame; 4. Input end; 5. First quick-release plate; 6. Second quick-release plate; 7. Output end; 8. First bracket; 9. First fixing plate; 10. First tripping ejector; 11. Primary distributor; 12. Second bracket; 13. Second fixing plate; 14. First closing ejector; 15. Force-bearing column; 16. Electrical terminal; 17. Closing buffer engagement; 18. Arc extinguisher; 19. Tripping buffer engagement; 20. First push rod; 21. Second push rod; 22. Secondary distributor; 3. First processor; 24. High-power fast switch; 25. High-voltage large-capacity capacitor bank; 26. Second opening ejector; 27. Second closing ejector; 28. Connecting terminal; 29. ​​Insulating frame; 30. Accelerating ejector coil; 31. Armature seat; 32. Deceleration coil; 33. Air inlet terminal; 34. Piston; 35. Piston rod; 36. Second processor; 37. High-pressure air pump; 38. High-pressure air tank; 39. First battery cell; 40. Flexible contact piece; 41. Second battery cell; 42. Buffer rubber; 43. Third battery cell. Detailed Implementation

[0020] 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.

[0021] In the description of this application, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0022] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0023] Example 1, please refer to Figure 1-3The present invention provides an embodiment of an automatic recloser, comprising a housing 1, an input terminal 4 and an output terminal 7 mounted on the outer shell of the housing 1, and a matching circuit monitoring system. A support column 2 is provided on the outside of the housing 1, fixing the housing 1 to a preset position via the support column 2. The housing 1 itself is fixed to the support column 2 by bolts. A support frame 3 is also provided below the housing 1 for support, forming a triangular support structure. The support frame 3 is fixed to the housing 1 by bolts, and the support frame 3 is fixed to the support column 2 by clamps. The device also includes: The primary power distribution unit 11 contains a power supply, a transformer, a rectifier, and communication equipment for connecting to the circuit monitoring system. The primary power distribution unit 11 is used to supply power to the electrical equipment inside the housing 1 and also to bridge the circuit monitoring system to achieve signal transmission. The quick-release mechanism includes a first quick-release plate 5 and a second quick-release plate 6. The first quick-release plate 5 and the second quick-release plate 6 are fixedly connected to the housing 1 by bolts. A first bracket 8 is installed on the first quick-release plate 5. The first bracket 8 is located inside the housing 1. A first fixing plate 9 is installed on the back of the first bracket 8. A handle for easy handling is also fixedly installed on the outside of the first quick-release plate 5. A second bracket 12 is installed on the second quick-release plate 6. The second bracket 12 is located inside the housing 1. A second fixing plate 13 is installed on the back of the second bracket 12. A handle for easy handling is also fixedly installed on the outside of the second quick-release plate 6. The tripping module includes a magnetic tripping module, which includes a first tripping ejector 10, which is mounted on the front end face of the first bracket 8. The closing module includes a magnetic closing module, which includes a first closing ejector 14, which is mounted on the front end face of the second bracket 12. The motion separation module includes two movable power terminals 16, a force-bearing column 15 connecting the two power terminals 16, and two connecting terminals 28 respectively connecting the input terminal 4 and the output terminal 7. The two power terminals 16 will contact and connect with the two connecting terminals 28 respectively to realize the power supply of the input terminal 4 and the output terminal 7. The magnetic tripping module and the magnetic closing module are used in pairs on both sides with the force-bearing column 15 as the axis. Both the magnetic tripping module and the magnetic closing module adopt electromagnetic catapult technology. Specifically, the force-bearing column 15 is moved closer to the first closing ejector 14 by the first opening ejector 10, thereby separating the power terminal 16 from the input terminal 4 and the output terminal 7. The force-bearing column 15 is moved closer to the first opening ejector 10 by the first closing ejector 14, thereby connecting the power terminal 16 with the input terminal 4 and the output terminal 7.

[0024] Please see Figure 2 , Figure 3 and Figure 4The first opening ejector 10 is equipped with a first push rod 20, and the first closing ejector 14 is equipped with a second push rod 21. The first opening ejector 10 and the first closing ejector 14 have the same structure. The first opening ejector 10 includes two parallel insulating frames 29. An acceleration ejector coil 30 and a deceleration coil 32 are arranged on the inner side of the insulating frames 29. An armature seat 31 is slidably connected between the two insulating frames 29. A secondary distributor 22, a first processor 23, a high-power fast switch 24, and a high-voltage large-capacity capacitor bank 25 are respectively installed on the rear end face of the first fixing plate 9. The high-voltage large-capacity capacitor bank 25 is electrically connected to the first opening ejector 10. The two parallel insulating frames 29 are used to fix the acceleration ejector coil 30. The first processor 23 adopts STMicroelectronics' STM32F103 series ARM. The Cortex-M3 core microcontroller's built-in 12-bit ADC module acquires voltage and current signals in real time from an external circuit monitoring system via the RS485 interface of the primary power distributor 11. When the detected current exceeds a preset threshold (e.g., 100A), the first processor 23 responds within 1ms by outputting a high-level pulse signal from its designated GPIO pin to the high-power fast switch 24. The high-power fast switch 24 is an IGBT (Insulated Gate Bipolar Transistor) based power module, model FF100R12RT4. Its gate is connected to the processor's GPIO pin via a driver circuit and a TLP350 optocoupler-isolated driver board. When the IGBT is turned on, the high-voltage, high-capacity capacitor bank 25, with a total capacitance of 4700μF, is pre-charged to 1200VDC by the secondary power distributor 22 and then... The accelerator coil 30 of the first trip ejector 10 discharges instantaneously. The discharge current is an approximately sinusoidal wave with an amplitude of about 800A to 1000A and a pulse width of 3ms. This current generates an extremely strong transient magnetic field in the accelerator coil 30, driving the armature seat 31 and the first push rod 20 fixed thereto to move at high speed in a straight line, thereby impacting the force-bearing column 15 to achieve rapid tripping. When the armature seat 31 moves to the end, it enters the magnetic field region of the deceleration coil 32, generating a reverse eddy current braking force to achieve smooth deceleration and prevent mechanical impact. The accelerator coil 30 and the deceleration coil 32 share an integral skeleton injection molded from glass fiber reinforced PBT engineering plastic. This skeleton is "I" shaped, namely, the insulating frame 29. The two sides of the insulating frame 29 are provided with cylindrical structures for winding the accelerator coil 30 and the deceleration coil 32. The accelerator coil 30 is made of ϕ2.0mm QQ-2 type high-strength enameled round copper wire is tightly wound 35 turns along the cylindrical structure in the middle of the frame to form multiple concentrated windings. The start and end of the coil are led out and soldered to the high-current terminals on the side of the insulating frame 29. The deceleration coil 32 uses the same enameled wire, with a 15-turn winding wound at the end of each of the two insulating frames 29. The two deceleration windings are connected in series in the circuit. Inside the central cylinder of the coil frame, a cylindrical iron core made of DT4C electrical pure iron is tightly pressed in. The function of the iron core is to form a low magnetic reluctance path and concentrate and enhance the magnetic field. The entire coil assembly is encapsulated in an epoxy resin. The grease-filled sealant provides mechanical fixation, insulation, and heat dissipation. The armature seat 31 is precision-machined from a high-conductivity, non-ferromagnetic material blank, preferably LY12 aluminum alloy or T2 copper. Its overall shape is a hollow cylinder or a flat "I"-shaped slider. The top is an insulating connecting seat for the first push rod 20 or the second push rod 21, which is fixed by screws. The accelerator coil 30 is based on the law of electromagnetic induction and Lorentz force. When the high-voltage, high-capacity capacitor bank 25 discharges instantaneously to the accelerator coil 30, a momentary strong pulse current (such as a peak value of 1000A) will be generated and flow through the accelerator. Coil 30 generates a sharply enhanced axial magnetic field (B field) inside the accelerator coil 30. At this time, the armature holder 31, made of a highly conductive material, is located in this changing magnetic field. According to Faraday's law of electromagnetic induction, the changing magnetic field induces strong eddy currents inside the armature holder 31. The direction of the eddy currents is opposite to the direction of the current in the accelerator coil 30. The armature holder 31, carrying eddy currents, is in the magnetic field generated by the accelerator coil 30 and is subjected to the Lorentz force, thereby driving the armature holder 31 to accelerate from the accelerator coil 30 to the deceleration coil 32. The deceleration coil 32 is also based on electromagnetic induction. According to Lenz's law and energy conversion, when the armature holder 31 moves at high speed to its end under the drive of the accelerating spring coil 30 and enters the magnetic field region of the deceleration coil 32, the armature holder 31 cuts the magnetic field lines of the deceleration coil 32. According to Lenz's law, this motion induces a current in the deceleration coil 32, and the magnetic field generated by this induced current opposes the movement of the armature holder 31, generating a strong electromagnetic braking force. This braking force rapidly consumes the kinetic energy of the armature holder 31, converting it into heat energy, thus bringing the armature holder 31 to a smooth and rapid stop, avoiding a rigid collision with the end mechanical baffle and protecting the equipment.

[0025] Please see Figure 2 and Figure 3The first push rod 20 is longer than the second push rod 21. The first push rod 20 is connected to the armature seat 31 of the first tripping ejector 10, and the second push rod 21 is connected to the armature seat 31 of the first closing ejector 14. Push plates are provided at the ends of both the first push rod 20 and the second push rod 21 near the force-bearing column 15, and both push plates are in contact with the force-bearing column 15. The lengths of the first push rod 20 and the second push rod 21 are specially designed. When in the closing state, the push plates at the front ends of the first push rod 20 and the second push rod 21 will be in contact with the force-bearing column 15. At this time, the armature seat 31 of the first tripping ejector 10 will be in the initial stage of the accelerating ejector coil 30, and the armature seat 31 of the first closing ejector 14 will be in the deceleration coil 32. When in the tripping state, similarly, the push plates at the front ends of the first push rod 20 and the second push rod 21 are in contact with the force-bearing column 15, but the first tripping... The armature seat 31 of the ejector 10 will be located in the deceleration coil 32, and the armature seat 31 of the first closing ejector 14 will be located in the acceleration ejector coil 30. When the opening action is performed, the first opening ejector 10 is energized and the first closing ejector 14 is not energized. When the closing action is performed, the first closing ejector 14 is energized and the first opening ejector 10 is not energized. When the force column 15 is moved by the push plate at the front end of the first push rod 20 and the second push rod 21, the movement of the first push rod 20 and the second push rod 21 themselves will not interfere with the insulating guard 29. At the same time, the push plate is elongated in the Z-axis direction. The force column 15 is staggered from the first opening ejector 10 and the first closing ejector 14 in the Z-axis setting position. Therefore, the left and right movement of the force column 15 will not hit the first opening ejector 10 and the first closing ejector 14, and the force column 15 will not be interfered with.

[0026] Please see Figure 2 , Figure 8 and Figure 10Inside the housing 1, near the connecting terminal 28, are respectively provided a closing buffer engagement 17 and a opening buffer engagement 19. When closing, the energizing terminal 16 engages with the closing buffer engagement 17; when opening, the energizing terminal 16 engages with the opening buffer engagement 19. Both the closing buffer engagement 17 and the opening buffer engagement 19 have internal buffer rubber 42. The internal structure of the buffer rubber 42 has multiple honeycomb-shaped circular holes. The buffer rubber 42 inside the closing buffer engagement 17 and the opening buffer engagement 19 is made of nitrile rubber with a Shore A hardness of 60±3, exhibiting excellent oil resistance and elasticity. The circular holes are uniformly distributed through holes with a diameter of 8cm and a depth that penetrates the entire thickness of the buffer rubber block. This effectively converts impact kinetic energy into material deformation energy, achieving a buffering efficiency of over 70%. The electrical terminal 16 has a trapezoidal platform structure on both sides, and its surface is also provided with raised engagement strips. At the same time, the buffer rubber 42 inside the closing buffer engagement device 17 and the opening buffer engagement device 19 is also provided with engagement grooves. When the electrical terminal 16 is inserted into the inner side of the buffer rubber 42, the engagement strip will engage with the engagement groove to achieve fixed positioning. The buffer rubber 42 has a triangular structure, and its inner side continuously tightens, thereby achieving the clamping operation of the electrical terminal 16.

[0027] Please see Figure 2 and Figure 8An arc extinguisher 18 is installed inside the housing 1 near the connecting terminal 28. The arc extinguisher 18 adopts a composite structure of magnetic blowout arc extinguishing and arc extinguishing grid, and is fixedly installed on the inner wall of the housing 1 near the connecting terminal 28. It is positioned to address the gap that may be generated when the energized terminal 16 separates from the connecting terminal 28, where an arc may be generated. Inside the arc extinguisher 18, there is an arc extinguishing chamber made of ceramic high-temperature resistant insulating material. Multiple U-shaped steel arc extinguishing grids that are insulated from each other are arranged in parallel inside the chamber. The arc extinguisher 18 works in conjunction with the fast tripping module. Because the tripping module provides an extremely high tripping speed, the energized terminal 16 and the connecting terminal 28 can be quickly separated, and the arc is rapidly elongated. This creates favorable conditions for magnetic blowout arc extinguishing. The combination of high-speed tripping and efficient arc extinguishing ensures that even when interrupting a large current, the arc can be extinguished in less than 20ms, greatly improving the safety and service life of the equipment. The closing buffer engagement 17 and the opening buffer engagement 19 are also included. A limiting slide bridge is provided between the two terminals. The inner side of the limiting slide bridge is provided with a sliding groove, and the outer side of the power terminal 16 is provided with a sliding leg. The sliding leg is embedded in the sliding groove and slidably connected with the sliding groove. The sliding groove of the limiting slide bridge is a precision-machined T-shaped groove, and the sliding leg on the power terminal 16 that mates with it is a T-shaped protrusion with an interference fit. The material is polytetrafluoroethylene (PTFE) or polyoxymethylene (POM) with self-lubricating properties. The single-sided fitting clearance between the sliding groove and the sliding leg is controlled between 0.05mm and 0.15mm, which not only ensures a low coefficient of friction during the movement process (dynamic friction coefficient is less than 0.2), but also ensures that the power terminal 16 and the force-bearing column 15 do not jam or shake during high-speed movement. The force-bearing column 15 is connected to the two power terminals 16 through an M8 fine thread, and the axial length can be finely adjusted by ±2mm by rotating the force-bearing column 15 to compensate for cumulative manufacturing and assembly errors and ensure uniform contact pressure between the power terminal 16 and the connecting terminal 28.

[0028] Please see Figure 8 , Figure 9 and Figure 11The power receiving terminal 16 contains a first battery cell 39, the force-bearing column 15 contains a third battery cell 43, and the connecting terminal 28 contains a second battery cell 41. The connecting terminal 28 has open sides and a U-shaped structure, allowing the power receiving terminal 16 to penetrate its interior. An elastic contact piece 40 is located below the second battery cell 41 inside the connecting terminal 28. When the connecting terminal 28, power receiving terminal 16, and force-bearing column 15 are connected, the second battery cell 41, the first battery cell 39, and the third battery cell 43 contact and are energized. It is a cylindrical solid rod made of a silver-tungsten carbide composite material with extremely high conductivity and wear resistance. The first battery cell 39 is pressed into the cavity of the first battery cell 39 in the power terminal 16 with an interference fit. The end of the first battery cell 39 facing the connection terminal 28 is processed into a hemispherical shape and protrudes slightly from the "beak" contact end face of the power terminal 16 by about 1 mm. When the power terminal 16 is inserted laterally into the connection terminal 28, the top of the first battery cell 39 will contact and squeeze the elastic contact piece 40. The elastic contact piece 40 realizes the electrical connection between the second battery cell 41 and the first battery cell 39. The end of the first battery cell 39 connected to the force-bearing column 15 is in close contact with the top of the third battery cell 43, realizing the contact and power supply of the first battery cell 39, the third battery cell 43 and the second battery cell 41.

[0029] Example 2, please refer to Figure 1 , Figure 5 and Figure 6 One embodiment of the present invention provides an automatic recloser, comprising a housing 1, an input terminal 4 and an output terminal 7 mounted on the outer shell of the housing 1, and a matching circuit monitoring system, and further comprising: The primary power distribution unit 11 contains a power supply, a transformer, a rectifier, and communication equipment for connecting to the circuit monitoring system. The primary power distribution unit 11 is used to supply power to the electrical equipment inside the housing 1 and also to bridge the circuit monitoring system to achieve signal transmission. The quick-release mechanism includes a first quick-release plate 5 and a second quick-release plate 6. A first bracket 8 is installed on the first quick-release plate 5. The first bracket 8 is located inside the housing 1. A first fixing plate 9 is installed on the back of the first bracket 8. A handle for easy handling is also fixedly installed on the outside of the first quick-release plate 5. A second bracket 12 is installed on the second quick-release plate 6. The second bracket 12 is located inside the housing 1. A second fixing plate 13 is installed on the back of the second bracket 12. A handle for easy handling is also fixedly installed on the outside of the second quick-release plate 6. The tripping module includes an air-operated tripping module, which includes a second tripping ejector 26, which is mounted on the front end face of the first bracket 8. The closing module includes an air-operated closing module, which includes a second closing ejector 27, which is mounted on the front end face of the second bracket 12. The motion separation module includes two movable power terminals 16, a force-bearing column 15 connecting the two power terminals 16, and two connecting terminals 28 respectively connecting the input terminal 4 and the output terminal 7. The two power terminals 16 will contact and connect with the two connecting terminals 28 respectively to realize the power supply of the input terminal 4 and the output terminal 7. The pneumatic tripping module and the pneumatic closing module are used in pairs on both sides with the force-bearing column 15 as the axis. Both the pneumatic tripping module and the pneumatic closing module adopt high-pressure air ejection technology. Specifically, the force-bearing column 15 is moved closer to the second closing ejector 27 by the second opening ejector 26, thereby separating the power terminal 16 from the input terminal 4 and the output terminal 7. The force-bearing column 15 is moved closer to the second opening ejector 26 by the second closing ejector 27, thereby connecting the power terminal 16 with the input terminal 4 and the output terminal 7.

[0030] Please see Figure 5 , Figure 6 and Figure 7 The second trip ejector 26 includes a cylinder and a piston 34 slidably mounted inside the cylinder. A piston rod 35 is connected to one side of the piston 34. An air inlet terminal 33 is fixedly mounted on the cylinder at the end away from the piston rod 35. The structure of the second closing ejector 27 is the same as that of the second trip ejector 26. The piston rod 35 of the second trip ejector 26 is longer than that of the piston rod 35 of the second closing ejector 27. A second processor 36, a high-pressure air pump 37, and a high-pressure air tank 38 are also mounted on the first fixing plate 9. The high-pressure air tank 38 is connected to the second trip ejector 26. A second bracket 12 is fixedly mounted on the side of the second quick-release plate 6 near the inside of the housing 1. A second fixing plate 13 is fixedly mounted on the rear end face of the second bracket 12. An air inlet terminal 33 is mounted on the rear end face of the second fixing plate 13. The equipment is the same as the equipment installed on the rear end face of the first fixed plate 9. Solenoid valves are provided on both sides of the surface of the second trip ejector 26 and the second trip ejector 26. When the piston 34 slides inside the cylinder, the air located on the front side in the direction of movement will be released through the solenoid valve. The two solenoid valves on the cylinder are normally closed and only open when the piston 34 moves. The solenoid valves on the cylinder are also controlled by the second processor 36. The length of the piston rod 35 of the second trip ejector 26 and the piston rod 35 of the second trip ejector 26 are also specially designed. The movement stroke of the piston 34 is also designed according to the distance between the closing buffer engagement 17 and the tripping buffer engagement 19 to ensure that when the power terminal 16 moves between the two, there will be no interference or severe impact force.

[0031] The second processor 36 also uses an STM32F103 series microcontroller. Upon receiving a trip command, the second processor 36 controls a two-position three-way high-speed solenoid valve, model SMC. The VQZ215U-5G-M5 operates at DC24V with a response time of less than 10ms. The solenoid valve's inlet (P) is connected to a high-pressure gas tank 38 via a high-pressure nylon tube with a rated pressure of 50MPa. Its outlet (A) is connected to the inlet terminal 33 of the second trip ejector 26, and its exhaust port (R) is open. When the solenoid valve is energized, high-pressure gas, typically maintained at 25-30MPa, instantly enters the rear end of the cylinder of the second trip ejector 26, pushing the piston 34 and piston rod 35 forward at high speed to achieve tripping. The high-pressure air pump 37 has a power of 20kW and a displacement of 100L / min, controlled by the second processor 36. When the pressure in the high-pressure gas tank 38 is detected to be lower than the set lower limit (e.g., 50MPa), it automatically starts pressure replenishment and stops when the upper limit (e.g., 150MPa) is reached. The closing action is achieved by another independent solenoid valve controlling the second closing ejector 27 using the same logic.

[0032] Please see Figure 5 , Figure 8 and Figure 10 Inside the housing 1, near the connecting terminal 28, are respectively provided a closing buffer engagement 17 and a opening buffer engagement 19. When closing, the energizing terminal 16 engages with the closing buffer engagement 17; when opening, the energizing terminal 16 engages with the opening buffer engagement 19. Both the closing buffer engagement 17 and the opening buffer engagement 19 have internal buffer rubber 42. The internal structure of the buffer rubber 42 has multiple honeycomb-shaped circular holes. The buffer rubber 42 inside the closing buffer engagement 17 and the opening buffer engagement 19 is made of nitrile rubber with a Shore A hardness of 60±3, exhibiting excellent oil resistance and elasticity. The circular holes are uniformly distributed through holes with a diameter of 8cm and a depth that penetrates the entire thickness of the buffer rubber block. This effectively converts impact kinetic energy into material deformation energy, achieving a buffering efficiency of over 70%. The electrical terminal 16 has a trapezoidal platform structure on both sides, and its surface is also provided with raised engagement strips. At the same time, the buffer rubber 42 inside the closing buffer engagement device 17 and the opening buffer engagement device 19 is also provided with engagement grooves. When the electrical terminal 16 is inserted into the inner side of the buffer rubber 42, the engagement strip will engage with the engagement groove to achieve fixed positioning. The buffer rubber 42 has a triangular structure, and its inner side continuously tightens, thereby achieving the clamping operation of the electrical terminal 16.

[0033] Please see Figure 5 and Figure 8An arc extinguisher 18 is provided inside the housing 1 near the connecting terminal 28. A limit bridge is provided between the closing buffer engagement 17 and the opening buffer engagement 19. A groove is provided on the inner side of the limit bridge, and a sliding leg is provided on the outer side of the power connection terminal 16. The sliding leg is embedded in the groove and slidably connected to the groove. The groove of the limit bridge is a precision-machined T-shaped groove, and the sliding leg on the power connection terminal 16 that mates with it is an interference fit T-shaped protrusion. The material is polytetrafluoroethylene (PTFE) or polyoxymethylene (POM) with self-lubricating properties. The single-sided fitting clearance between the slide groove and the slide leg is controlled between 0.05mm and 0.15mm, which ensures a low coefficient of friction during the movement process, with a dynamic friction coefficient of less than 0.2, and also ensures that the power terminal 16 and the force-bearing column 15 do not jam or wobble during high-speed movement. The force-bearing column 15 is connected to the two power terminals 16 by M8 fine thread, and the axial length can be finely adjusted by ±2mm by rotating the force-bearing column 15 to compensate for cumulative manufacturing and assembly errors and ensure uniform contact pressure between the power terminal 16 and the connecting terminal 28.

[0034] Please see Figure 8 , Figure 9 and Figure 11 The power receiving terminal 16 contains a first battery cell 39, the force-bearing column 15 contains a third battery cell 43, and the connecting terminal 28 contains a second battery cell 41. The connecting terminal 28 has open sides and a U-shaped structure, allowing the power receiving terminal 16 to penetrate its interior. An elastic contact piece 40 is located below the second battery cell 41 inside the connecting terminal 28. When the connecting terminal 28, power receiving terminal 16, and force-bearing column 15 are connected, the second battery cell 41, the first battery cell 39, and the third battery cell 43 contact and are energized. It is a cylindrical solid rod made of a silver-tungsten carbide composite material with extremely high conductivity and wear resistance. The first battery cell 39 is pressed into the cavity of the first battery cell 39 in the power terminal 16 with an interference fit. The end of the first battery cell 39 facing the connection terminal 28 is processed into a hemispherical shape and protrudes slightly from the "beak" contact end face of the power terminal 16 by about 1 mm. When the power terminal 16 is inserted laterally into the connection terminal 28, the top of the first battery cell 39 will contact and squeeze the elastic contact piece 40. The elastic contact piece 40 realizes the electrical connection between the second battery cell 41 and the first battery cell 39. The end of the first battery cell 39 connected to the force-bearing column 15 is in close contact with the top of the third battery cell 43, realizing the contact and power supply of the first battery cell 39, the third battery cell 43 and the second battery cell 41.

[0035] Example 3: The external circuit monitoring system is an independent intelligent monitoring unit. Its hardware core is an embedded industrial computer system, specifically including: Main control module: It adopts a microprocessor based on the ARM Cortex-A series core and runs an embedded Linux operating system; Signal acquisition module: Voltage sensor: A Hall effect voltage sensor is used, with a rated measurement voltage of 0~600VAC and an output of 0~5V analog signal; Current sensor: A closed-loop Hall current sensor is used, with a rated measurement current of 0~200A and an output of 0~5V analog signal; Signal conditioning circuit: including an amplification circuit consisting of an anti-aliasing filter and an operational amplifier, to condition the sensor output signal to the optimal input range of 0~3.3V of the microprocessor's built-in ADC; Communication module: The board has an onboard RS485 communication interface chip, which is connected to the microprocessor's UART serial port through a non-isolated RS485 to TTL level conversion circuit. The physical layer of the communication interface uses A and B two-wire differential signal transmission and has a third GND line as a reference ground. Power supply module: A wide-voltage input AC / DC switching power supply with an input of 85~264VAC and an output of +5VDC / 2A and ±15VDC / 0.5A, powering the entire monitoring system; Voltage and current sensors draw sampling signals from the monitored power line, from input terminal 4 or output terminal 7 of the automatic recloser, respectively, to collect voltage and current signals in real time. The sensors convert high voltage and high current signals into safe low-level analog signals in a proportional and isolated manner. The conditioned analog signals are sent to the ADC pin of the microprocessor for synchronous sampling at a sampling rate of 10k times per second. The microprocessor internally runs fault detection algorithms, for example: RMS value calculation: The root mean square algorithm is applied to the discrete sampling point sequence to calculate the RMS values ​​of voltage and current in real time. Overcurrent detection: The calculated effective value of the current is compared with the preset fault threshold of 100A. If the current value exceeds the threshold for two consecutive cycles, an overcurrent fault is determined to have occurred. Other fault diagnosis: The algorithm may also include judgment logic for undervoltage, overvoltage, frequency abnormality, etc. Instruction generation: Once a fault is confirmed, the microprocessor immediately generates an instruction frame containing a specific function code and data. For example, function code 0x05 represents "forced tripping", and data field 0xFF00 represents "starting".

[0036] Both the external circuit monitoring system and the primary distributor 11 inside the automatic recloser housing 1 have a standard RS485 interface terminal block. A three-core shielded twisted-pair cable (AWG18 gauge) is used to connect the two ends. Specifically, the A+ terminal of the monitoring system connects to the A+ terminal of the primary distributor 11, B- connects to B-, and GND connects to GND. The cable shield is reliably grounded at both ends through the metal casing of the terminal block or a dedicated grounding terminal to enhance electromagnetic interference immunity. Both connections can also conform to Modbus standards. The RTU protocol enables master-slave communication. The master device is an external circuit monitoring system, and the slave device is the communication interface circuit within the primary power distribution unit 11. The slave device itself may be implemented by a simple STM32 microcontroller for protocol parsing. Frame structure: A frame of data includes slave address (1 byte), function code (1 byte, such as 0x05 write a single coil), data (2 bytes, containing the address and status of the coil to be operated), and CRC check (2 bytes). Communication parameters: baud rate is fixed at 9600bps, data bits are 8 bits, there is no parity bit, and there is 1 stop bit.

[0037] After the monitoring system (master device) detects a fault, it actively sends a "forced trip" Modbus command frame to the primary distributor 11 (slave device). After receiving the command and verifying that it is correct, the primary distributor 11 converts the command into a TTL level signal and directly transmits it to an interrupt pin of the first processor 23 or the second processor 36, triggering the trip module to act immediately.

[0038] Fault diagnosis and control logic of external circuit monitoring system: The core fault determination logic of the external circuit monitoring system is based on an embedded software algorithm running on its internal microprocessor, as follows: Data acquisition and processing: The system synchronously acquires analog signals from voltage and current sensors at a sampling rate of 10 kHz.

[0039] After being converted into digital signals by the built-in ADC, the effective values ​​of voltage and current are calculated in real time using the True RMS algorithm.

[0040] Fault determination threshold: Overcurrent fault: If the calculated effective value of the current exceeds 1.5 times the rated current for two consecutive power frequency cycles (for example, for a line rated at 100A, the threshold is 150A), then an overcurrent fault is determined to have occurred.

[0041] Short circuit fault: When the effective value of the current is detected to rise sharply to more than 5 times the rated current within 10ms, it is immediately determined to be a short circuit fault, and the highest priority trip command is initiated.

[0042] Undervoltage / overvoltage fault: When the effective voltage value is lower than 80% of the rated voltage or higher than 120% of the rated voltage and lasts for more than 1 second, it is judged as an abnormal voltage fault.

[0043] All of the above threshold parameters are stored in the non-volatile memory of the monitoring system and can be configured and modified through host computer software.

[0044] Interaction logic with the controller: Once a fault is detected, the monitoring system immediately sends the corresponding write coil command to the slave device in the primary distributor 11 via the RS485 interface, according to the preset Modbus RTU protocol.

[0045] Instruction mapping relationship: Function code 0x05, coil address 0x0000, write 0xFF00 → trigger tripping.

[0046] Function code 0x05, coil address 0x0001, write 0xFF00 → reset the latching state.

[0047] After receiving the instruction and completing the CRC check, the STM32 microcontroller in the primary power distributor 11 generates a high-level interrupt signal through a GPIO pin and directly transmits it to the designated interrupt input pin of the first processor 23 or the second processor 36.

[0048] Upon receiving the interrupt signal, either the first processor 23 or the second processor 36 immediately invokes the interrupt service routine and unconditionally executes the corresponding tripping operation to ensure real-time response. This hardware interrupt path has the highest priority and is not blocked by other processor tasks.

[0049] A method of using an automatic recloser includes the following steps: S1: Through an external circuit monitoring system, it communicates with the primary distributor 11 via an RS485 interface using the Modbus RTU protocol with a baud rate of 9600bps, and monitors the circuit voltage and current parameters in real time. S2: When the current exceeds 100A for 10ms and the circuit fails, the first circuit breaker ejector 10 or the second circuit breaker ejector 26 will act within 15ms after receiving the signal from the first processor 23 or the second processor 36, and quickly drive the power terminal 16 to disconnect from the connection terminal 28, so that the input terminal 4 and the output terminal 7 are de-energized. S3: After the circuit is disconnected for a set time T1 of 0.5 seconds, it can be modified by the host computer software and stored in the processor's EEPROM. The processor controls the closing module to move quickly to the side of the opening module, so that the power terminal 16 and the connection terminal 28 are reconnected and energized. S4: The circuit status is detected secondary by an external circuit monitoring system; S5: When the circuit fault has been cleared, the power supply will continue, completing the second power-on process; S6: When the circuit fault is not resolved, power is cut off a second time through the tripping module; S7: The continuous power outage time T2 is longer than the previous power outage time T1. Specifically, T2 = k * T1, where k is the delay coefficient, with a default value of 1.5, i.e., T2 = 0.75 seconds. After that, the circuit is powered on again through the closing module. S8: The circuit status is checked three times by an external circuit monitoring system; S9: When the circuit fault has been cleared, the power supply will continue, completing three power-on cycles; S10: If the circuit fault is not resolved, the circuit breaker module will be powered off three times and the recloser will be locked to prevent automatic closing until manual intervention is required.

[0050] Working principle: During use, the quick-release mechanism enables independent, rapid, and safe disassembly and installation of the opening and closing modules. Thus, in the event of a single module failure, it is not necessary to disassemble the entire recloser or another healthy module, greatly simplifying the maintenance process. The main structures of the opening and closing modules are installed on the quick-release mechanism. During disassembly, it is only necessary to independently remove the corresponding first quick-release plate 5 or second quick-release plate 6, and simply disconnect the connecting wires of the opening and closing modules from the primary distributor 11. When using the magnetic tripping and closing modules, upon receiving the tripping command, the first processor 23 drives the high-power fast switch 24 to instantly and fully conduct. The electrical energy stored in the high-voltage, high-capacity capacitor bank 25 is released instantaneously through the high-power fast switch 24 to the accelerator coil 30 with a huge pulse current. As the pulse current flows through the accelerator coil 30, it establishes an axial pulse magnetic field in the iron core inside the coil. This pulse magnetic field penetrates the armature seat 31 located inside the two insulating frames 29. According to Faraday's law of electromagnetic induction, the changing magnetic flux induces a huge eddy current inside the armature seat 31. At this time, the armature seat 31, carrying the eddy current, is itself in the pulse magnetic field generated by the accelerator coil 30. According to the Lorentz force law, the armature seat 3... The eddy current in 1 will be subjected to an electromagnetic force perpendicular to the direction of the magnetic field. The direction of the force is along the axis of the ejector and points towards the opening direction. The armature seat 31 moves in a straight line and drives the first push rod 20 to move in a straight line. The first push rod 20 pushes the force column 15 through the push plate. The force column 15 drives the two ends of the electrical terminals 16 to separate from the connecting terminals 28, completing the circuit disconnection. When the armature seat 31 moves at high speed to the end of the first closing ejector 14, it will enter the magnetic field region of the deceleration coil 32. When the armature seat 31 moves in the magnetic field and cuts the magnetic field lines, it will generate a force that opposes its relative motion. Its motion is subjected to strong electromagnetic resistance, which slows down the speed of motion. At this time, the electrical terminals 16 will disengage from the closing buffer engagement 17 and engage with the opening buffer engagement 19. The principle of closing action is the same as opening action. When using the pneumatic tripping and closing modules, during the tripping action, the high-pressure air pump 37 has already pressurized and stabilized the compressed air in the high-pressure air tank 38 at a high pressure. After receiving the tripping command, the second processor 36 immediately drives the two-position three-way high-speed solenoid valve of the second tripping ejector 26 to operate. The solenoid valve is energized, the valve core moves, connecting the air inlet and the working port, while simultaneously closing the exhaust port. The high-pressure gas instantly flows through the solenoid valve into the rear chamber of the cylinder of the second tripping ejector 26. The enormous pressure of the gas acts on the end face of the piston 34, generating a very strong thrust. Driven by the high-pressure gas, the piston 34... 4 and the piston rod 35 connected to it are pushed and move forward at high speed in a straight line along the cylinder. The push plate at the front end of the piston rod 35 hits the force column 15. The subsequent mechanical separation process is the same as that of electromagnetic drive. While the piston 34 moves forward, the volume of the chamber at its front end decreases and the air inside is compressed. Another solenoid valve at the front end of the cylinder opens the exhaust port, so that this part of low-pressure air is quickly discharged to avoid back pressure from hindering the piston movement. At the end of the piston 34's stroke, a hydraulic buffer or polyurethane buffer pad is installed in the cylinder to absorb the remaining kinetic energy and achieve smooth impact and stop. Similarly, the working principle of the closing action is also the same. The second push rod 21 of the first closing ejector 14 is shorter than the first push rod 20 of the first opening ejector 10, and the piston rod 35 of the second closing ejector 27 is shorter than the piston rod 35 of the second opening ejector 26. This ensures that at the end of the closing stroke, the electrical terminal 16 can accurately reach the position and be locked by the closing buffer engagement device 17. At the same time, the armature seat 31 or the piston 34 will not overtravel and collide. In the control system logic, the opening and closing modules will never be triggered at the same time. The first processor 23 ensures that the opening module has been fully reset and is in standby state before the closing command is issued, and vice versa, forming an electrical interlock to prevent the equipment from being damaged due to accidental energy release.

[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.

Claims

1. An automatic recloser, comprising a housing, an input terminal and an output terminal mounted on the housing outer shell, and an external circuit monitoring system for use therewith, characterized in that: Also includes: The quick-release mechanism includes a first quick-release plate and a second quick-release plate; The tripping module includes a magnetic tripping module and a pneumatic tripping module; Closing modules include magnetic closing modules and pneumatic closing modules; The motion separation module includes two movable electrical terminals and a force-bearing column connecting the two electrical terminals. The two electrical terminals are used to energize the input terminal and the output terminal. The magnetic tripping module and the magnetic closing module are used opposite each other on both sides with the force-bearing column as the axis. The pneumatic tripping module and the pneumatic closing module are used opposite each other on both sides with the force-bearing column as the axis. The magnetic tripping module and the magnetic closing module both adopt electromagnetic ejection technology. The pneumatic tripping module and the pneumatic closing module both adopt high-pressure air ejection technology. The tripping module is mounted on a first quick-release plate, and the closing module is mounted on a second quick-release plate. The magnetic tripping module includes a first tripping ejector, the magnetic closing module includes a first closing ejector, the pneumatic tripping module includes a second tripping ejector, and the pneumatic closing module includes a second closing ejector. The first and second tripping ejectors move the force-bearing column towards the side closer to the closing module, thus separating the power terminals from the input and output terminals. The first closing ejector... The first opening ejector and the second closing ejector enable the force-bearing column to move towards the side closer to the opening module, thereby connecting the power terminal with the input and output terminals. The first opening ejector is equipped with a first push rod, and the first closing ejector is equipped with a second push rod. The first opening ejector and the first closing ejector have the same structure. The first opening ejector includes two parallel insulating frames. The inner side of the insulating frames is equipped with an acceleration spring coil and a deceleration coil. An armature seat is slidably connected between the two insulating frames.

2. An automatic recloser according to claim 1, characterized in that: The first push rod is longer than the second push rod. The first push rod is connected to the armature seat of the first trip ejector, and the second push rod is connected to the armature seat of the first closing ejector. Both the first and second push rods are provided with push plates at the end near the force-bearing column, and both push plates are in contact with the force-bearing column.

3. An automatic recloser according to claim 1, characterized in that: The second tripping ejector includes a cylinder and a piston slidably mounted inside the cylinder. A piston rod is connected to one side of the piston. An air inlet terminal is fixedly mounted on the cylinder at the end away from the piston rod. The structure of the second closing ejector is the same as that of the second tripping ejector. The piston rod of the second tripping ejector is longer than that of the piston rod of the second closing ejector.

4. An automatic recloser according to claim 1, characterized in that: A first bracket is fixedly installed on the side of the first quick-release plate near the inside of the housing. The first bracket is fixedly connected to the first trip ejector. A first fixing plate is fixedly installed on the rear end face of the first bracket. A secondary distributor, a first processor, a high-power fast switch, and a high-voltage large-capacity capacitor bank are respectively installed on the rear end face of the first fixing plate. The high-voltage large-capacity capacitor bank is electrically connected to the first trip ejector.

5. An automatic recloser according to claim 4, characterized in that: The first fixed plate is also equipped with a second processor, a high-pressure air pump and a high-pressure air tank. The high-pressure air tank is connected to the second trip ejector. A second bracket is fixedly installed on the side of the second quick-release plate near the inside of the housing. A second fixed plate is fixedly installed on the rear end face of the second bracket. The equipment installed on the rear end face of the second fixed plate is the same as the equipment installed on the rear end face of the first fixed plate.

6. An automatic recloser according to claim 1, characterized in that: The housing has a connection terminal inside that connects to the input terminal. A closing buffer and a closing buffer are respectively provided on the side of the housing near the connection terminal. When the circuit is closed, the power terminal engages with the closing buffer. When the circuit is opened, the power terminal engages with the closing buffer. Both the closing and closing buffers have buffer rubber inside, and the internal structure of the buffer rubber has multiple honeycomb-shaped round holes.

7. An automatic recloser according to claim 6, characterized in that: An arc extinguisher is provided inside the housing near the connection terminal. A limit bridge is provided between the closing buffer engagement device and the opening buffer engagement device. A sliding groove is provided on the inner side of the limit bridge. A sliding leg is provided on the outer side of the power connection terminal. The sliding leg is embedded in the sliding groove and slidably connected to the sliding groove.

8. An automatic recloser according to claim 7, characterized in that: The power receiving terminal has a first battery cell inside, the force-bearing column has a third battery cell inside, the connecting terminal has a second battery cell inside, and an elastic contact piece is provided inside the connecting terminal below the second battery cell. When the connecting terminal, the power receiving terminal and the force-bearing column are connected, the second battery cell, the first battery cell and the third battery cell are in contact and energized.

9. A method of using an automatic recloser, implemented based on an automatic recloser as described in claims 1-8, characterized in that, Includes the following steps: S1: Monitor the circuit status through an external circuit monitoring system; S2: When a circuit fault occurs, the trip module will quickly disconnect the power terminal from the connection terminal, thereby de-energizing the input and output terminals. S3: After the circuit is disconnected for a period of time, the closing module quickly pushes the force column to move to one side of the opening module, so that the power terminal is connected to the connection terminal and the power is turned on. S4: The circuit status is detected secondary by an external circuit monitoring system; S5: When the circuit fault has been cleared, the power supply will continue, completing the second power-on process; S6: When the circuit fault is not resolved, power is cut off a second time through the tripping module; S7; The continuous power outage time is longer than the previous power outage time. The circuit is powered on again through the secondary power supply of the closing module. S8: The circuit status is checked three times by an external circuit monitoring system; S9: When the circuit fault has been cleared, the power supply will continue, completing three power-on cycles; S10: If the circuit fault is not resolved, the power will be cut off three times through the tripping module, and the closing operation will not be performed until manual intervention is required.

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