Emergency power-off protection device for high-voltage reactive power compensator

Abstract

The invention relates to an emergency power-off protection device for a high-voltage reactive power compensator, which relates to the technical field of emergency protection of high-voltage reactive power compensators and comprises a frame, first vertical plates symmetrically arranged are fixedly mounted on two sides of a bedplate, a first bearing plate is arranged on the first vertical plates, and a second bearing plate is arranged above the first bearing plate. A second vertical plate is fixedly installed on the second bearing plate, a first transmission arm is rotatably installed on the inner side of the third vertical plate, a second transmission arm is hinged to the end of the first transmission arm, a middle rotating shaft is rotatably installed in the second vertical plate, the inner side of the middle rotating shaft is in transmission fit with the second transmission arm, and the outer side of the middle rotating shaft is in transmission connection with a bearing frame; and a plurality of micro motors are fixedly mounted at the end part of the outer side of the bearing frame. The device can be automatically and stably connected with a reactor connecting structure, so that power maintenance operators are far away from a reactor mounting area, the accident rate is greatly reduced, the maintenance efficiency is improved, and a high-reliability full-scene safety protection system is constructed.

Description

Technical Field

[0001] The invention relates to the technical field of emergency protection of high-voltage reactive compensators, and in particular discloses an emergency power-off protection device for high-voltage reactive compensators. Background Art

[0002] High-voltage VAR compensators regulate reactive power through shunt capacitor banks. Their key component, the reactor, is connected directly in series to the power supply circuit of the capacitor bank, forming an independent functional unit. Reactors suppress harmonic amplification. By configuring a specific reactance ratio, they shift the LC series resonance point below the primary interfering harmonic, making the branch circuit inductive at the harmonic frequency and blocking the influx of harmonic currents. This significantly reduces the amplitude and frequency of transient inrush currents when the capacitors are connected, thereby protecting the switchgear. The key to reactor placement is ensuring safe distances and sufficient heat dissipation space. Typically, the number of reactors deployed depends on the branch circuit, with a single branch typically requiring three-phase reactors. Reactors in a single branch are typically arranged horizontally, with large spacing between them and non-magnetic supports to ensure adequate natural ventilation and facilitate heat dissipation. The reactor casings are equipped with multiple threaded holes, which facilitate mounting the reactor within the high-voltage VAR compensator and connection to other supporting components, allowing for easy adjustment of the reactor's mounting position.

[0003] When a high-voltage VAR compensator experiences an emergency power outage, to ensure overall system stability, the system will instantly activate an emergency reserve power source. Power maintenance personnel must conduct a complete power system inspection and repair before the emergency reserve power source is depleted. If maintenance personnel fail to complete their maintenance work before the emergency reserve power source is depleted, they must simultaneously disconnect the reactor at the instant the high-voltage VAR compensator loses power. This process requires ensuring synchronization between the reactor and the high-voltage VAR compensator. In actual power operations, maintenance personnel struggle to maintain high synchronization, often with a time lag of 0.5s-1.5s. During this time, the reactor can generate multiple cascading risks. Specifically, the residual charge in the capacitor is released through the reactor circuit, creating a high-frequency LC resonance that can instantly break down the capacitor and reactor, leading to explosive failure. Second, the grid-side fault current can easily flow back through the reactor, potentially damaging the de-energized equipment. These multiple cascading risks can easily lead to a larger incident, skyrocketing repair costs, and seriously threatening personnel safety. Summary of the Invention

[0004] In view of the current problem that when a high-voltage reactive power compensator encounters an emergency power-off accident, there is a large time difference in the synchronous disconnection of the reactor, resulting in multiple chain reactions. The present invention provides an emergency power-off protection device for a high-voltage reactive power compensator.

[0005] To solve the above problems, the present invention provides the following technical solutions: An emergency power-off protection device for a high-voltage reactive power compensator comprises a frame, a table is fixedly mounted in the frame, a controller main box is fixedly mounted on the table, an alarm light group is fixedly mounted on the outside of the frame, and the alarm light group is electrically connected to the controller main box; symmetrically arranged first vertical plates are fixedly mounted on both sides of the table, a first receiving plate moving along the Y-axis direction is provided on the first vertical plate, a second receiving plate moving along the X-axis direction is provided above the first receiving plate, a second vertical plate is fixedly mounted on the second receiving plate, and the bottom of the second vertical plate is tightly A third vertical plate is fixedly connected, and a first transmission arm is rotatably installed on the inner side of the third vertical plate. The end of the first transmission arm is hinged to the second transmission arm, and the second transmission arm moves along the Y-axis direction. A rotating shaft arranged along the X-axis direction is rotatably installed in the second vertical plate, and the inner side of the rotating shaft is in transmission cooperation with the second transmission arm. The outer side of the rotating shaft is transmission-connected to a carrier frame, and the carrier frame moves along the Y-axis direction. A plurality of micro-motors are fixedly installed on the outer end of the carrier frame, and the output end of the micro-motor is threadedly engaged with the mounting groove of the reactor of the high-voltage reactive compensator.

[0006] Preferably, a rod seat is fixedly mounted on the table, a rotatable screw rod is arranged in the rod seat, the screw rod is arranged along the Y-axis direction, a first stepper motor is provided on the side of the rod seat, the output end of the first stepper motor is matched with the screw rod through a first coupling, a nut sleeve is slidably mounted on the outer wall of the screw rod, and the nut sleeve is fastened to the first connecting plate; a first slide rail is fixedly mounted on the first vertical plate, the first slide rail is arranged along the Y-axis direction, a Y-direction slider is fixedly mounted on the bottom of the first connecting plate, and the Y-direction slider is slidably matched with the first slide rail.

[0007] Preferably, a first ranging radar is fixedly mounted on the side of the rod base facing the nut sleeve, and a second ranging radar cooperating with the first ranging radar is fixedly mounted on both sides of the nut sleeve.

[0008] Preferably, a reference plate is fixedly installed on the side of the first vertical plate, and a plurality of slots arranged along the Y-axis direction are opened on the reference plate. A photoelectric position sensor is fixedly installed on the outside of the slots, and a light shielding plate is fixedly installed on the side of the first supporting plate, and the light shielding plate moves along the Y-axis direction and passes through the photoelectric position sensor.

[0009] Preferably, an electric slide rail is fixedly mounted on the first connecting plate, the electric slide rail is arranged along the X-axis direction, a second stepping motor for driving is provided on the side of the electric slide rail, an X-direction slide plate is fixedly mounted on the output sliding end of the electric slide rail, an X-direction slider is fixedly mounted on the bottom of the X-direction slider, a plurality of second slide rails are fixedly mounted on the electric slide rail, the second slide rails are slidably matched with the X-direction slider, and the X-direction slider is fastened to the second connecting plate.

[0010] Preferably, a third stepper motor is provided on the outer side of the third vertical plate, and a rotatably matched transmission rod is provided on the third vertical plate. One end of the transmission rod is connected to the output end of the third stepper motor through a second coupling, and the other end of the transmission rod is fastened to the first transmission arm.

[0011] Preferably, a shaft sleeve is mounted on the outer wall of the inner end of the rotating shaft, a U-shaped groove is provided in the shaft sleeve, the inner wall of the U-shaped groove slides with the two sides and the top of the second transmission arm, a transmission gear is fixedly installed on the end of the inner end of the rotating shaft, and a serrated groove is provided at the bottom of the second transmission arm for meshing with the transmission gear.

[0012] Preferably, a track groove plate is fixedly installed on the outer side of the third vertical plate, and the track groove plate is rotatably matched with the rotating shaft. A slide groove is provided on the track groove plate, and the slide groove is provided with three sections and is a through structure. The three sections of the slide groove are: a straight strip groove arranged along the Z-axis direction, a straight strip groove arranged along the Y-axis direction, and an arc groove connecting the above two sections; the side of the track groove plate is provided with a first limit plate rotatably matched with the third vertical plate, the first limit plate is arranged along the Y-axis direction, and a limit groove is provided in the first limit plate, the supporting frame is slidably matched with the limit groove, and an axis roller is rotatably installed on the inner side of the supporting frame, and the outer wall of the axis roller is slidably matched with the inner wall of the slide groove.

[0013] Preferably, the outer end of the rotating shaft is fixedly connected with a second limiting plate, and a through slot is formed on the second limiting plate, and the inner wall of the through slot is in sliding engagement with the outer wall of the shaft roller.

[0014] Preferably, the micro-motor is provided with a right-angle joint electrically connected to the controller main box, the output end of the micro-motor is fastened to a long rod, the outer wall of the long rod close to the end of the micro-motor is a smooth part, and the outer wall of the long rod away from the end of the micro-motor is provided with a threaded groove.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The present invention can achieve millisecond-level synchronous power-off of the reactor through triple structural innovations; first, the linkage design of cross-coordinate positioning and dual transmission arms is adopted to greatly reduce the synchronization error of the micro-motor execution, and completely eliminate the risk of resonant overvoltage and fault current backflow caused by the traditional opening time difference; secondly, the direct-drive threaded actuator of the device can be arranged to the predetermined position in advance to facilitate millisecond-level power-off, and the output end of the micro-motor is directly screwed into the thread groove of the reactor, eliminating other intermediate fixed connection operation links and greatly reducing the response time; finally, the three-dimensional dynamic adaptation frame supports the load-bearing frame inclination adjustment structure, which not only reduces the layout space of the device, but also automatically completes position adjustment and related operations, so that the operating personnel can stay away from the area, greatly reducing the accident rate, and improving maintenance efficiency, building a highly reliable full-scene safety protection system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the present invention, the following briefly introduces the drawings required for the description. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive efforts. Figure 1 The overall structure of the device of the present invention is shown in FIG. Figure 1 ; Figure 2 The overall structure of the device of the present invention is shown in FIG. Figure 2 ; Figure 3 This is a schematic diagram of the coordinated installation structure of the first receiving plate and the second receiving plate of the present invention; Figure 4 This is a schematic diagram of the screw rod installation structure of the present invention; Figure 5 is a schematic diagram of the reference plate structure of the present invention; Figure 6 This is a schematic diagram of the electric slide rail installation structure of the present invention; Figure 7 This is a schematic diagram of the X-direction slide installation structure of the present invention; Figure 8 Schematic diagram of the structure of the second vertical plate and the third vertical plate of the present invention; Figure 9 This is a schematic diagram of the track groove plate installation structure of the present invention; Figure 10 This is a schematic diagram of the cooperative installation structure of the first transmission arm and the second transmission arm of the present invention; Figure 11 This is a schematic diagram of the installation structure of the first limiting plate and the second limiting plate of the present invention; Figure 12 It is a schematic diagram of the limiting groove and through groove structure of the present invention; Figure 13 This is a schematic diagram of the long rod structure of the present invention; In the figure: 1. Frame, 2. Table, 3. Controller main box, 4. Warning light assembly, 5. First vertical plate, 6. First receiving plate, 7. Second receiving plate, 8. Second vertical plate, 9. Third vertical plate, 10. First transmission arm, 11. Second transmission arm, 12. Transfer shaft, 13. Carrying frame, 14. Micro motor, 15. Rod seat, 16. Screw, 17. First stepper motor, 18. First coupling, 19. Nut, 20. First slide rail, 21. Y-axis slider, 22. First ranging radar, 23. Second ranging radar, 24. Reference plate, 25. Slot, 26. Photoelectric position sensor, 27. Sunshade, 28. Electric slide, 29. Second stepper motor, 30. X-axis slide, 31. X-axis slider, 32. Second slide, 33. Third stepper motor, 34. Transmission rod, 35. Second coupling, 36. Bushing, 37. U-shaped groove, 38. Transmission gear, 39. Sawtooth groove, 40. Track groove plate, 41. Slide, 42. First limit plate, 43. Limit groove, 44. Shaft roller, 45. Second limit plate, 46. Through groove, 47. Right-angle joint, 48. Long rod, 49. Smooth part, 50. Threaded groove. DETAILED DESCRIPTION

[0017] In order to make the purpose, features, and advantages of the present invention more obvious and easy to understand, the technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the specific embodiments. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0018] This specific embodiment provides an emergency power-off protection device for a high-voltage reactive power compensator, such as Figures 1-13 As shown; comprising a frame 1, the frame 1 is formed by welding a plurality of cross beams and longitudinal beams to each other, and one end of the inner side of the frame 1 can be fastened to the outer frame of the high-voltage reactive compensator, so that the device is fixedly assembled on the side of the high-voltage reactive compensator.

[0019] A tabletop 2 is fixedly mounted on the bottom side of the interior of the frame 1. The tabletop 2 is the main bearing structure of the core components inside the device. A rod seat 15 is fixedly mounted on the tabletop 2. Two rod seats 15 are provided and the bottoms of both rod seats 15 are tightly connected to the tabletop 2. The axes of the two rod seats 15 are arranged along the Y-axis direction. A screw rod 16 is installed between the two rod seats 15. The outer wall of the screw rod 16 rotates with the inner ring wall of the rod seat 15. The screw rod 16 is arranged along the Y-axis direction. A first stepper motor 17 is provided on the side of the rod seat 15. The first stepper motor 17 is fixedly mounted on a motor support. The motor support is tightly connected to the tabletop 2, thereby fixing the first stepper motor 17 on the side of the rod seat 15. The output end of the first stepper motor 17 is coupled to the screw rod 16 via a first coupling 18, thereby driving the screw rod 16 to rotate. A nut sleeve 19 is slidably mounted on the outer wall of the screw rod 16. The inner ring of the nut sleeve 19 rotates with the outer wall of the screw rod 16, and the top of the outer ring of the nut sleeve 19 is tightly connected to the first connecting plate 6. In addition, two symmetrically arranged first vertical plates 5 are provided on both sides of the screw rod 16, and the two first vertical plates 5 are both arranged along the Y-axis. The tops of the two first vertical plates 5 are fixedly mounted with first slide rails 20, and the two first slide rails 20 are arranged along the Y-axis. The bottom of the first connecting plate 6 is fixedly mounted with Y-direction sliders 21. The Y-direction sliders 21 are provided in plurality and symmetrically arranged on both sides of the bottom of the first connecting plate 6. Each Y-direction slider 21 slidably engages with the first slide rail 20, thereby limiting the movement direction of the first connecting plate 6, allowing the first connecting plate 6 to move above the first vertical plate 5 along the Y-axis.

[0020] A first ranging radar 22 is fixedly installed on one side of the two rod seats 15 facing the nut sleeve 19, and the signal detection ends of the first ranging radar 22 are both facing the nut sleeve 19; a second ranging radar 23 is fixedly installed on both sides of the nut sleeve 19, and the second ranging radar 23 is arranged at the same height as the two first ranging radars 22, so that the first ranging radar 22 and the second ranging radar 23 cooperate with each other to facilitate sensing the travel distance of the first docking plate 6, thereby enhancing the coordination and linkage function of the present device.

[0021] Reference plates 24 are fixedly installed on the sides of the two first vertical plates 5, and each reference plate 24 is provided with a plurality of slots 25 arranged along the Y-axis direction. The slots 25 are all circular holes, and the spacing between two adjacent slots 25 is the same; photoelectric position sensors 26 are fixedly installed on the outer sides of the slots 25, and two photoelectric position sensors 26 are provided and arranged symmetrically; light shielding plates 27 are fixedly installed on the side parts of both sides of the first connecting plate 6, and the light shielding plates 27 can move along the Y-axis direction and pass through the photoelectric position sensors 26, so that the photoelectric position sensor 26 can accurately obtain the direction of movement of the first connecting plate 6 to ensure that the direction of movement of the first connecting plate 6 complies with the control logic.

[0022] An electric slide 28 is fixedly mounted on the first connecting plate 6. The electric slide 28 is arranged along the X-axis, and the bottom of the electric slide 28 is fastened to the upper surface of the first connecting plate 6. A second stepper motor 29 is provided on the side of the electric slide 28 to provide driving force to the electric slide 28. An X-direction slide 30 is fastened to the output sliding end of the electric slide 28, and the X-direction slide 30 can move along the X-direction direction under the drive of the electric slide 28. Specifically, a plurality of X-direction sliders 31 are fixedly mounted on the bottom of the X-direction slide 30. A plurality of second slide rails 32 are fixedly mounted on the electric slide 28. Each of the second slide rails 32 slides in sliding engagement with the X-direction sliders 31, thereby sharing the load-bearing pressure at the output sliding end of the electric slide 28. A second connecting plate 7 is fixedly mounted on the top of the X-direction slide 30, and the second connecting plate 7 can be adjusted in the X-direction direction under the drive of the electric slide 28.

[0023] A second vertical plate 8 is fixedly mounted on the second receiving plate 7 . The second vertical plate 8 is a right-angle plate structure, and a third vertical plate 9 is fixedly mounted on the bottom plate surface. The third vertical plate 9 is arranged parallel to the vertical plate of the second vertical plate 8 .

[0024] A third stepper motor 33 is disposed on the outside of the third riser 9. The third stepper motor 33 is fixedly mounted on a motor bracket, which is securely connected to the second receiving plate 7. A rotationally engaged transmission rod 34 is disposed on the third riser 9. The transmission rod 34 is arranged at the same height as the output shaft of the third stepper motor 33. One end of the transmission rod 34 is connected to the output end of the third stepper motor 33 via a second coupling 35, thereby enabling the third stepper motor 33 to drive the transmission rod 34 to rotate within the third riser 9. The other end of the transmission rod 34 is securely connected to the first transmission arm 10, which is arranged on the inside of the third riser 9. Thus, the transmission rod 34 drives the first transmission arm 10 to rotate within the inside of the third riser 9.

[0025] The outer end of the first transmission arm 10 is hinged to the second transmission arm 11 via a pin. A central shaft 12 arranged along the X-axis direction is rotatably mounted within the second vertical plate 8. A sleeve 36 is mounted on the outer wall of the inner end of the central shaft 12. The sleeve 36 can rotate with the central shaft 12. A downward-facing U-shaped groove 37 is provided within the sleeve 36. The inner wall of the U-shaped groove 37 slides with the sides and top of the second transmission arm 11, thereby limiting the movement of the second transmission arm 11 along the Y-axis. A transmission gear 38 is fixedly mounted at the end of the inner end of the central shaft 12. A serrated groove 39 is provided at the bottom of the second transmission arm 11, which engages with the transmission gear 38 for transmission, thereby enhancing the linkage capability between the second transmission arm 11 and the central shaft 12.

[0026] A track plate 40 is fixedly mounted on the outer side of the second vertical plate 8, and the track plate 40 is rotatably engaged with the central shaft 12. A slide groove 41 is provided on the track plate 40, and the slide groove 41 is provided with three sections and is a through structure. The three sections of the slide groove 41 are: a straight groove arranged along the Z-axis direction, a straight groove arranged along the Y-axis direction, and an arc groove connecting the above two sections; the straight groove arranged along the Z-axis direction has a lower minimum height than the straight groove arranged along the Y-axis direction, and both ends of the arc groove are connected to the straight groove arranged along the Z-axis direction and the straight groove arranged along the Y-axis direction. A first limit plate 42 is provided on the side of the track plate 40, and the inner side of the first limit plate 42 is rotatably engaged with the second vertical plate 8 by providing a cylindrical portion. The first limit plate 42 is arranged along the Y-axis direction and has the same height as a section of the straight groove arranged along the Y-axis direction of the slide groove 41. A supporting frame 13 is provided on the outer side of the second vertical plate 8, and a limiting groove 43 is provided in the first limiting plate 42, and the opening of the limiting groove 43 is arranged along the X-axis direction; the end of the supporting frame 13 close to the second vertical plate 8 is slidably engaged with the inner wall of the limiting groove 43; the inner side of the end of the supporting frame 13 close to the second vertical plate 8 is rotatably installed with an axis roller 44, and the outer wall of the axis roller 44 is slidably engaged with the inner wall of the slide groove 41.

[0027] Among them, the outer end of the rotating shaft 12 is fixedly connected to a second limit plate 45, and the second limit plate 45 is arranged on the outer side of the track groove plate 40. A through groove 46 is opened on the track groove plate 40, and the inner wall of the through groove 46 slides with the outer wall of the shaft roller 44; so that the second limit plate 45 provides a support structure for the shaft roller 44 to slide in the slide groove 41.

[0028] A controller main box 3 is fixedly mounted on the table 2, and an alarm light group 4 is fixedly mounted on the outside of the frame 1. The alarm light group 4 can display a variety of alarm prompt light colors. The controller main box 3 and the alarm light group 4 are connected so that the alarm light group 4 can display the working status of the device in real time. A plurality of micromotors 14 are fixedly mounted on the outer end of the carrier 13. The micromotors 14 are provided in three numbers and are arranged at equal intervals. The output ends of the micromotors 14 are arranged toward the outside of the device. The controller main box 3 can be electrically connected to the three micromotors 14, the first stepper motor 17, the electric slide 28, the second stepper motor 29, and the third stepper motor 33 via a control bus, thereby facilitating control of the operation progress of the entire device. In addition, the controller main box 3 can be wirelessly connected to the first ranging radar 22, the second ranging radar 23, and the photoelectric position sensor 26 for real-time perception of the operating status of the entire device.

[0029] In addition, each micro-motor 14 is provided with a right-angle connector 47 electrically connected to the controller main box 3, so that the connection and routing of the communication line are more stable; the output end of each micro-motor 14 is fastened to a long rod 48, and the long rod 48 can rotate together with the output end of the micro-motor 14. The outer wall of the long rod 48 close to the end of the micro-motor 14 is a smooth portion 49, and the outer wall of the long rod 48 away from the end of the micro-motor 14 is provided with a threaded groove 50, which can be connected to the threaded hole provided on the reactor housing, so that the output end of the micro-motor 14 is threadedly matched with the reactor mounting groove of the high-voltage reactive compensator, and the long rod 48 is fastened to the reactor.

[0030] The working principle of the present invention is: If the high-voltage VAR compensator experiences an emergency power outage, the emergency reserve power supply will promptly deliver emergency power to the power supply system. At this point, the master control unit within the controller main box 3 will calculate the remaining time of the emergency reserve power supply. Before the emergency reserve power supply is exhausted, the electric slide 28 is controlled to move the second receiving plate 7 along the X-axis to the side of the first reactor connected in series with the high-voltage VAR compensator. The first stepper motor 17 is then controlled to move the first receiving plate 6 along the Y-axis, gradually bringing the long rod 48 closer to the reactor. During the movement of the first supporting plate 6 along the Y-axis direction, the first transmission arm 10 can be rotated by controlling the third stepping motor 33, and under the drive of the second transmission arm 11, the transmission gear 38 drives the transfer shaft 12 to rotate together, so that the second limiting plate 45 drives the shaft roller 44 from the straight strip groove set along the Z-axis direction of the slide groove 41 through the arc groove, and gradually moves to the side of the bottom of the straight strip groove set along the Y-axis direction close to the first limiting plate 42. During this process, the carrier 13 is gradually adjusted to be arranged along the Y-axis direction. When the shaft roller 44 slides in the straight strip groove set along the Z-axis direction, the long rod 48 enters the threaded hole of the inductor. Under the rotation of the output end of the micro-motor 14, the threaded groove 50 of the long rod 48 is matched with the threaded hole of the inductor, thereby fastening the long rod 48 to the inductor thread.

[0031] At the moment when the emergency reserve power is exhausted, the first stepper motor 17 is controlled to move the first receiving plate 6 along the Y-axis direction, so that the above-mentioned inductor is quickly separated from the high-voltage reactive power compensator, thereby preventing the residual charge of the capacitor from being released through the inductor circuit, ensuring that no explosive fault occurs, thereby assisting power engineering personnel in maintenance work and protecting the safety of related operators.

[0032] Compared with the existing technical means, the present invention has the following advantages: First, this device completely solves the problem of power-off time difference through a multi-axis linkage rigid transmission structure: the first connecting plate 6 and the second connecting plate 7 form a cross coordinate reference to accurately locate the installation position of the reactor; the motion chain composed of the first transmission arm 10, the second transmission arm 11 and the transfer shaft 12 will quickly adjust the layout position of the carrier 13 and gradually move it closer to the reactor. The driving error time of the above linkage structure is less than 0.5ms, eliminating the risk of asynchrony in traditional manual control and fundamentally preventing the resonant overvoltage and fault current backflow caused by delayed disconnection of the reactor.

[0033] Secondly, the device uses a direct-drive threaded actuator, which can be arranged in a predetermined position in advance to facilitate millisecond-level power outage; the output end of the micro-motor 14 is directly screwed into the thread groove of the reactor, eliminating other intermediate fixed connection operation links, and the entire power-off action is compressed to 8-12ms, greatly reducing the response time.

[0034] Finally, the present invention innovates a three-dimensional dynamic adaptive frame to cope with complex working conditions. The support frame 13 supports tilt adjustment, which is not only compatible with various types of reactors of various diameters, but also reduces the layout space of the device, so that the device can be reasonably arranged on the side of the high-voltage reactive compensator; the alarm light group 4, the controller main box 3 and the linkage structure of other drive components can trigger the sound and light alarm 10 seconds in advance before the emergency power is exhausted, and can automatically complete position adjustment and related operations, so that the operating personnel can stay away from the area; this greatly reduces the probability of accidents and significantly improves the maintenance efficiency of the overall device.

[0035] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An emergency power-off protection device for a high-voltage reactive power compensator, comprising a frame (1), characterized in that: A tabletop (2) is fixedly mounted inside the frame (1), a controller main box (3) is fixedly mounted on the tabletop (2), an alarm light group (4) is fixedly mounted on the outside of the frame (1), and the alarm light group (4) is electrically connected to the controller main box (3); symmetrically arranged first vertical plates (5) are fixedly mounted on both sides of the tabletop (2), a first receiving plate (6) movable along the Y-axis direction is provided on the first vertical plate (5), a second receiving plate (7) movable along the X-axis direction is provided above the first receiving plate (6), a second vertical plate (8) is fixedly mounted on the second receiving plate (7), a third vertical plate (9) is fastened to the bottom of the second vertical plate (8), and the third vertical plate (9) is fixedly mounted on the bottom of the second vertical plate (8). A first transmission arm (10) is rotatably mounted on the inner side of the plate (9), a second transmission arm (11) is hingedly connected to the end of the first transmission arm (10), and the second transmission arm (11) moves along the Y-axis direction. A central shaft (12) arranged along the X-axis direction is rotatably mounted on the inner side of the second vertical plate (8), the inner side of the central shaft (12) is transmission-matched with the second transmission arm (11), and the outer side of the central shaft (12) is transmission-connected with a carrier frame (13), and the carrier frame (13) moves along the Y-axis direction. A plurality of micro-motors (14) are fixedly mounted on the outer end of the carrier frame (13), and the output end of the micro-motors (14) is threadedly matched with the reactor mounting groove of the high-voltage reactive power compensator.

2. The emergency power-off protection device for a high-voltage reactive power compensator according to claim 1, characterized in that: A rod seat (15) is fixedly mounted on the table (2), a screw rod (16) is arranged in the rod seat (15) for rotational engagement, the screw rod (16) is arranged along the Y-axis direction, a first stepper motor (17) is arranged on the side of the rod seat (15) and is tightly connected to the table (2), the output end of the first stepper motor (17) is transmission-engaged with the screw rod (16) through a first coupling (18), a nut sleeve (19) is slidingly sleeved on the outer wall of the screw rod (16), the nut sleeve (19) is tightly connected to the first connecting plate (6); a first slide rail (20) is fixedly mounted on the first vertical plate (5), the first slide rail (20) is arranged along the Y-axis direction, a Y-direction slider (21) is fixedly mounted on the bottom of the first connecting plate (6), the Y-direction slider (21) is slidingly engaged with the first slide rail (20).

3. The emergency power-off protection device for a high-voltage reactive power compensator according to claim 2, characterized in that: A first ranging radar (22) is fixedly mounted on one side of the rod seat (15) facing the nut sleeve (19), and a second ranging radar (23) cooperating with the first ranging radar (22) is fixedly mounted on both sides of the nut sleeve (19).

4. The emergency power-off protection device for a high-voltage reactive power compensator according to claim 1, characterized in that: A reference plate (24) is fixedly mounted on the side of the first vertical plate (5), a plurality of slots (25) arranged along the Y-axis direction are opened on the reference plate (24), a photoelectric position sensor (26) is fixedly mounted on the outside of the slots (25), and a light shielding plate (27) is fixedly mounted on the side of the first receiving plate (6), and the light shielding plate (27) moves along the Y-axis direction and passes through the photoelectric position sensor (26).

5. The emergency power-off protection device for a high-voltage reactive power compensator according to claim 1, characterized in that: An electric slide rail (28) is fixedly mounted on the first receiving plate (6), and the electric slide rail (28) is arranged along the X-axis direction. A second stepping motor (29) for driving is provided on the side of the electric slide rail (28). An X-direction slide plate (30) is fixedly connected to the output sliding end of the electric slide rail (28), and an X-direction slider (31) is fixedly mounted on the bottom of the X-direction slider (30). A plurality of second slide rails (32) are fixedly mounted on the electric slide rail (28), and the second slide rails (32) are slidably matched with the X-direction slider (31). The X-direction slider (30) is fastened to the second receiving plate (7).

6. The emergency power-off protection device for a high-voltage reactive power compensator according to claim 1, characterized in that: A third stepping motor (33) is provided on the outer side of the third vertical plate (9), and a rotationally matched transmission rod (34) is provided on the third vertical plate (9). One end of the transmission rod (34) is transmission-connected to the output end of the third stepping motor (33) through a second coupling (35), and the other end of the transmission rod (34) is fastened to the first transmission arm (10).

7. The emergency power-off protection device for a high-voltage reactive power compensator according to claim 1, characterized in that: A shaft sleeve (36) is sleeved on the outer wall of the inner end of the rotating shaft (12), and a U-shaped groove (37) is provided in the shaft sleeve (36). The inner wall of the U-shaped groove (37) is slidably matched with the two sides and the top of the second transmission arm (11). A transmission gear (38) is fixedly installed at the end of the inner end of the rotating shaft (12), and a sawtooth groove (39) is provided at the bottom of the second transmission arm (11) for meshing with the transmission gear (38).

8. The emergency power-off protection device for a high-voltage reactive power compensator according to claim 1, characterized in that: A track plate (40) is fixedly installed on the outer side of the third vertical plate (9), and the track plate (40) is rotatably matched with the central shaft (12). A slide groove (41) is provided on the track plate (40), and the slide groove (41) is provided with three sections and is a through structure. The three sections of the slide groove (41) are respectively: a straight strip groove arranged along the Z-axis direction, a straight strip groove arranged along the Y-axis direction, and an arc groove connecting the above two sections; a first limit plate (42) is provided on the side of the track plate (40) and is rotatably matched with the third vertical plate (9), the first limit plate (42) is arranged along the Y-axis direction, and a limit groove (43) is provided in the first limit plate (42), the support frame (13) is slidably matched with the limit groove (43), and an axis roller (44) is rotatably installed on the inner side of the support frame (13), and the outer wall of the axis roller (44) is slidably matched with the inner wall of the slide groove (41).

9. The emergency power-off protection device for a high-voltage reactive power compensator according to claim 8, characterized in that: The outer end of the rotating shaft (12) is fixedly connected to a second limiting plate (45), and a through slot (46) is provided on the second limiting plate (45). The inner wall of the through slot (46) is slidably engaged with the outer wall of the shaft roller (44).

10. The emergency power-off protection device for a high-voltage reactive power compensator according to claim 1, characterized in that: The micro-motor (14) is provided with a right-angle connector (47) electrically connected to the controller main box (3), and the output end of the micro-motor (14) is fastened with a long rod (48), the outer wall of the long rod (48) close to the micro-motor (14) is a smooth portion (49), and the outer wall of the long rod (48) away from the micro-motor (14) is provided with a threaded groove (50).

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