A combined quick on-load tap changer and phase shifting device for a voltage regulator

Abstract

The application discloses a combined quick on-load tap and phase-shifting device for a current transformer voltage regulator and particularly relates to the technical field of electric voltage regulators, which comprises a frame body, a rotating shaft, a plurality of first contact heads and a plurality of second contact heads. The rotating shaft is used for rotating on-load tap and phase-shifting operation, the outer part of the rotating shaft is provided with the first contact heads, the first contact heads are distributed in a circle with equal intervals, and the height positions of the first contact heads are sequentially decreased with equal intervals, the inner part of the frame body is provided with the second contact heads, and the positions of the second contact heads correspond to the positions of the first contact heads. The application is provided with a mechanical linkage design (rollers, inclined grooves and springs), when the first contact heads are separated from the second contact heads, the arc extinguishing plate body can be automatically and synchronously driven to rise and intervene the contact gap, the generated electric arc can be rapidly guided into the arc extinguishing bin for segmentation and extinguishment, the direct ablation of the electric arc to the surface of the contact heads is prevented, and the service life of the equipment and the reliability of the tap operation are improved.

Description

Technical Field

[0001] This invention relates to the field of power voltage regulator technology, and more specifically to a combined fast on-load tap changer and phase shifter for a converter voltage regulator. Background Technology

[0002] On-load tap changers and phase shifters are key devices in power voltage regulators used to regulate output voltage. They can switch the tap positions of the windings without interrupting the load current, achieving smooth voltage regulation by changing the number of turns in the windings. The basic principle of an on-load tap changer is that after several taps are led out from the high-voltage winding of the transformer, the effective number of turns is changed by switching from one tap to another without interrupting the load current, thereby changing the voltage ratio of the transformer and achieving the purpose of voltage regulation. It mainly consists of three parts: a switching switch, a tap selector, and an operating mechanism. In terms of operation and maintenance, regular insulation oil testing, oil quality analysis, and core inspection are required. The maintenance cycle is usually based on the number of tap changes or the number of years of operation.

[0003] In existing technologies, common on-load tap changers and phase shifters require contact tapping and reconnection to complete the on-load tapping and phase shifting operations. During this process, a large number of ionizable electrons exist in the contacts themselves and the surrounding medium. When the applied voltage is sufficiently high, strong electroionization occurs, generating an electric arc. At this time, the electric arc of the tapping process contains extremely high temperature and energy, which can lead to contact erosion. Traditional on-load tap changers and phase shifters typically protect the contacts with insulating oil to reduce contact damage. However, during this process, the electric arc remains in contact with the contacts until it is completely extinguished. Furthermore, due to the slow recovery speed of the oil medium, there is still a risk of contact erosion in high-frequency operating environments, which can affect the performance of the device. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a combined rapid on-load tap changer and phase shifting device for converter voltage regulators, thereby solving the problems mentioned in the background art.

[0005] The above-mentioned technical objective of the present invention is achieved through the following technical solution:

[0006] A combined rapid on-load tapping and phase shifting device for a converter voltage regulator includes a frame and a rotating shaft disposed inside the frame. The frame is used to install components, and the rotating shaft can rotate about its central axis to complete on-load tapping and phase shifting operations.

[0007] The outer side of the rotating shaft is provided with several first contacts, which are distributed in a circumferentially spaced manner and whose height positions decrease sequentially at equal intervals. The inner side of the frame is provided with several second contacts, the positions of which correspond to the first contacts.

[0008] The rotating shaft is rotatable and can drive multiple first contacts to engage and disengage with multiple second contacts;

[0009] A guiding and protective assembly includes several plates, each plate, a first contact, and a second contact forming a group. The plates can rise synchronously when the first contact and the second contact separate, guiding the electric arc away from the surface of the second contact. After guiding the electric arc, the plates can weaken and disperse the electric arc and extinguish the arc with the help of insulating oil. The plates can reset when the first contact and the second contact are connected.

[0010] The phase-shifting assembly includes a phase-shifting winding and a phase-switching contact. The phase-shifting winding is embedded inside the frame and is used to adjust the output voltage phase angle. The phase-shifting winding is a multi-tap star-connected winding. The phase-switching contact is located inside the frame and is electrically connected to the taps of the phase-shifting winding. The phase-switching contact is made of silver alloy and its number is the same as the number of taps of the phase-shifting winding. The rotating shaft is rotatable and drives the phase-switching contact to switch the taps of the phase-shifting winding to achieve phase adjustment. The rotating shaft is a common rotating shaft and can synchronously drive the first contact and the second contact to connect and disconnect, and the phase-switching contact taps to switch, realizing the linkage operation of on-load tapping and phase shifting. The guiding and protection assembly is a common assembly and can simultaneously guide and extinguish the arc generated during on-load tapping and phase shifting.

[0011] By adopting the above technical solution, the electric arc generated when the first contact and the second contact are separated can be guided and eliminated, thereby protecting the first contact and the second contact and preventing them from being ablated.

[0012] Preferably, the guiding and protective assembly further includes: an arc-extinguishing chamber, wherein the arc-extinguishing chamber is provided with a plurality of arc-extinguishing grids, the plurality of arc-extinguishing grids being equally spaced, and electromagnetic generators being provided on both sides of the arc-extinguishing chamber, the arc-extinguishing grids being able to generate a magnetic field through the electromagnetic generators and actively introduce the arc guided by the plate into the arc-extinguishing chamber, and a plurality of conductive posts being provided on one side of the arc-extinguishing chamber, the conductive posts being able to disperse the arc into multiple small arcs after the arc is introduced by the arc-extinguishing grids.

[0013] By adopting the above technical solution, the current generated by the separation of the first and second contacts can be divided and weakened, thereby reducing the difficulty of the insulating oil in eliminating the electric arc.

[0014] Preferably, a guide groove is provided on one side of the plate, the guide groove is inclined to the vertical center line of the plate, and a guide plate is fixedly installed on one side inside the guide groove, the guide plate can actively guide the arc away from the surface of the second contact.

[0015] By adopting the above technical solution, the electric arc can be actively guided away from the surface of the second contact and guided into the interior of the arc extinguishing chamber.

[0016] Preferably, the frame body has several movable frames inside, each movable frame and a plate forming a group. The bottom surface of each movable frame is provided with an adjustment plate, and a second groove is opened on one side of the adjustment plate. The second groove is inclined to the horizontal center line of the adjustment plate. Several rods are provided outside the rotating shaft, and a positioning rod is provided on the bottom surface of each rod. One end of the positioning rod is rotatably connected to a roller. Each roller and the second groove forming a group. When the rotating shaft drives the rod to rotate, the roller can synchronously rotate into the interior of the second groove.

[0017] By adopting the above technical solution, the plate can be raised in conjunction with the first contact and the second contact when they separate.

[0018] Preferably, the outer circular wall of the frame is provided with a plurality of connecting sleeves, the bottom surface of the connecting sleeve is provided with a positioning plate, one side of the positioning plate is provided with an adjusting rod, one side of the adjusting rod is provided with a pressure roller, the plate can swing eccentrically around the horizontal center line of the movable frame, and one side of the plate is provided with a first groove, the pressure roller can enter the first groove when the plate moves upward.

[0019] By adopting the above technical solution, the plate can be rotated by adjusting the rod and the pressure roller, thereby adjusting its usage angle.

[0020] Preferably, the frame body has a plurality of positioning posts inside, and a first elastic element is provided on the outside of the positioning posts. The movable frame is provided on one side. Each positioning post and a connecting plate form a group. The connecting plate is movably sleeved with the positioning post. The first elastic element can provide a reset force to the movable frame after the roller moves out of the second groove.

[0021] By adopting the above technical solution, it is convenient to provide reset power for the plate after use.

[0022] Preferably, each of the connecting sleeves is provided with an arc light sensor at its top. The arc light sensor can monitor the arc intensity when the first contact and the second contact separate. A pneumatic drive is provided on one side of the positioning plate. The telescopic rod of the pneumatic drive can drive the adjusting rod to move. An angular displacement sensor is provided on one side of the movable frame. The angular displacement sensor can report the change in angle when the plate rotates.

[0023] By adopting the above technical solution, it is convenient to monitor the intensity of the electric arc and detect the rotation angle of the plate during use, thereby ensuring the accuracy of its adjustment and use.

[0024] Preferably, the conductive material of the guide plate is higher than that of the second contact and the first contact.

[0025] By adopting the above technical solutions, the accuracy of the electric arc being guided is ensured.

[0026] Preferably, the central axis of the guide groove is inclined to the central axis of the plate body to form an inclined surface, one side of the guide piece is attached to the inclined surface of the guide groove, and one end of the guide piece extends into the interior of the arc extinguishing chamber and is located at the bottom of the plurality of arc extinguishing grids.

[0027] By adopting the above technical solution, the electric arc can be accurately guided by the guide plate to the arc extinguishing chamber, and the electric arc can be weakened by passing through multiple arc extinguishing grids.

[0028] Preferably, one end of the conductive post has a thin sheet, and multiple grooves are provided on both sides of the sheet.

[0029] By adopting the above technical solution, after the electric arc is dispersed by multiple conductive pillars and comes into contact with the external insulating oil, the contact area between the dispersed electric arc and the insulating oil can be increased, thereby increasing its extinguishing speed.

[0030] In summary, the present invention has the following main beneficial effects:

[0031] 1. Through mechanical linkage design (rollers, inclined grooves, springs), this invention can automatically and synchronously drive the arc extinguishing plate to rise and enter the contact gap when the first contact and the second contact separate, so as to quickly guide the generated arc into the arc extinguishing chamber for segmentation and extinguishing. This prevents the arc from directly burning the contact surface, improving the equipment life and the reliability of tapping operation.

[0032] 2. This invention can monitor the arc intensity in real time and automatically adjust the cutting angle of the arc extinguishing plate through the drive components (pneumatic drive, adjusting rod, pressure roller) accordingly. At the same time, the sensor monitors to prevent over-adjustment. This allows the arc extinguishing guidance effect to be optimized for arcs of different intensities, enhancing the adaptability of the device under different working conditions and the accuracy of arc extinguishing. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural schematic diagram of the present invention;

[0034] Figure 2 This is a schematic diagram of the rod structure of the present invention;

[0035] Figure 3 This is a schematic diagram of the movable frame structure of the present invention;

[0036] Figure 4 This is a schematic diagram of the arc-extinguishing chamber structure of the present invention;

[0037] Figure 5 yes Figure 4 A magnified view of part A in the diagram;

[0038] Figure 6 This is a schematic diagram of the plate structure of the present invention;

[0039] Figure 7 This is a schematic diagram of the positioning plate structure of the present invention;

[0040] Figure 8 This is a schematic diagram of the positioning rod structure of the present invention.

[0041] Reference numerals: 100, frame; 110, rotating shaft; 111, first contact; 112, rod; 120, second contact; 121, connecting sleeve; 122, arc light sensor; 123, positioning plate; 1231, guide rail; 1232, pneumatic drive component; 124, adjusting rod; 1241, pressure roller; 130, positioning rod; 131, roller; 200, guide and protection assembly; 210, movable frame; 211, positioning seat; 212, angular displacement sensor; 213, second elastic element; 220, positioning post; 221, first elastic element; 222, connecting plate; 230, plate; 231, first groove; 232, guide groove; 233, guide plate; 240, adjusting plate; 241, second groove; 250, arc extinguishing chamber; 251, arc extinguishing grid; 252, electromagnetic generator; 253, conductive post. Detailed Implementation

[0042] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0043] Example: Reference Figure 1 , Figure 2 and Figure 3 A combined rapid on-load tap changer and phase shifter for a converter voltage regulator includes: a frame 100, a rotating shaft 110 rotatably connected inside the frame 100, a plurality of rods 112 fixedly installed on the outer circular wall of the rotating shaft 110, the plurality of rods 112 being distributed at equal intervals around the circumference and decreasing in height at equal intervals, a first contact 111 fixedly installed at one end of the rod 112, a plurality of connecting sleeves 121 fixedly sleeved on the outer circular wall of the frame 100, the position of the connecting sleeves 121 corresponding to the first contact 111, and a second contact 120 fixedly installed on one side of the connecting sleeves 121;

[0044] refer to Figure 3 , Figure 4 , Figure 5 and Figure 6 The frame 100 has several movable frames 210 slidably connected inside. A plate 230 is rotatably connected to one side of each movable frame 210. Each plate 230, a second contact 120, and a first contact 111 form a group. A guide groove 232 is provided on one side of the plate 230. A guide plate 233 is fixedly installed on one side of the guide groove 232. The guide plate 233 is made of chromium zirconium copper. An arc-extinguishing chamber 250 is fixedly installed on the other side of the guide groove 232. Several arc-extinguishing grids 251 are fixedly installed inside the arc-extinguishing chamber 250. The arc-extinguishing grids 251 are evenly spaced. Electromagnetic generators 252 are fixedly installed on both sides of the arc-extinguishing chamber 250. The electromagnetic generators 252 are electrically connected to the arc-extinguishing grids 251. A conductive post 253 is fixedly installed on one side of the arc-extinguishing chamber 250. One end of the conductive post 253 extends into the interior of the arc-extinguishing chamber 250. The guide plate 233 extends into the interior of the arc-extinguishing chamber 250.

[0045] The rotation of the shaft 110 allows multiple first contacts 111 and second contacts 120 to connect and disconnect, thus completing on-load tapping and phase shifting operations. When the second contact 120 separates from the first contact 111, the plate 230 moves and rises accordingly, intervening between the second contact 120 and the first contact 111. The arc generated between the second contact 120 and the first contact 111 is then drawn into the arc-extinguishing chamber 250 by the highly conductive guide plate 233. At this time, two electromagnetic generators 252 generate a magnetic field in multiple arc-extinguishing grids 251. According to the left-hand rule, a magnetic field will generate an electromagnetic force on the current. The direction of this force is perpendicular to the plane of the current and the magnetic field, which will guide the electric arc to actively enter the area where the arc-extinguishing grid 251 is located. Then, the electric arc will be divided and weakened under the action of multiple arc-extinguishing grids 251 and conducted to the surface of multiple conductive posts 253. Then, the conductive posts 253 output to the external insulating oil. In this way, when the first contact 111 separates from the second contact 120, the current can be actively guided away from the surface of the second contact 120 and the electric arc can be quickly divided and dispersed, thereby preventing the second contact 120 and the first contact 111 from being ablated.

[0046] Based on the above embodiments, refer to Figure 3 , Figure 4 , Figure 5 and Figure 8The frame 100 has several positioning posts 220 fixedly installed inside. The outer circular wall of the positioning posts 220 is movably sleeved with a first elastic element 221. A connecting plate 222 is fixedly installed on one side of the movable frame 210. The connecting plate 222 is slidably connected to the positioning posts 220. An adjusting plate 240 is fixedly installed on the bottom surface of the movable frame 210. A second groove 241 is opened on one side of the adjusting plate 240. The second groove 241 is inclined to the horizontal center line of the adjusting plate 240. A positioning rod 130 is fixedly installed on the bottom surface of the rod 112. A roller 131 is rotatably connected to one end of the positioning rod 130. The roller 131 is movably sleeved with the inner wall of the second groove 241. Two positioning seats 211 are fixedly installed on one side of the movable frame 210. A second elastic element 213 is fixedly sleeved on the inner circular wall of the positioning seat 211. The inner circular wall of the second elastic element 213 is fixedly sleeved with the connecting shaft of the plate 230.

[0047] When the rotating shaft 110 drives the rod 112 and the first contact 111 to rotate and separate, the roller 131 will enter the interior of the second groove 241. At this time, since the second groove 241 is inclined to the horizontal center line of the adjusting plate 240, the entry of the roller 131 will push the adjusting plate 240 and the movable frame 210 to move upward. Then the first elastic element 221 will be compressed. When the roller 131 completely leaves the interior of the second groove 241, that is, the first contact 111 and the second contact 120 are separated, the rebound force of the first elastic element 221 will drive the movable frame 210 to reset. In this way, the plate 230 can be used to rise in conjunction when the second contact 120 and the first contact 111 are separated, and the movable frame 210 can be reset when the second contact 120 and the first contact 111 are completely separated.

[0048] Based on the above embodiments, refer to Figure 3 , Figure 4 and Figure 7 A first groove 231 is provided on one side of the inner side of the plate 230. A positioning plate 123 is fixedly installed on the bottom surface of the connecting sleeve 121. A guide rail 1231 is fixedly installed on one side of the positioning plate 123. An adjusting rod 124 is slidably connected to one side of the guide rail 1231. A pressure roller 1241 is fixedly installed on one side of the adjusting rod 124. The pressure roller 1241 is slidably connected to the inner wall of the first groove 231. A pneumatic drive component 1232 is fixedly installed on the other side of the positioning plate 123. One end of the telescopic rod of the pneumatic drive component 1232 is fixedly installed to the adjusting rod 124. An angular displacement sensor 212 is fixedly installed on one side of the movable frame 210. One end of the sensing shaft of the angular displacement sensor 212 is fixedly installed to one end of the connecting shaft of the plate 230. An arc light sensor 122 is fixedly installed on the outer circular wall of the connecting sleeve 121. The monitoring surface of the arc light sensor 122 is inclined at seventy degrees to the second contact 120.

[0049] When the second contact 120 and the first contact 111 separate and generate an electric arc, the arc light sensor 122 monitors the arc and feeds back the arc intensity to the voltage regulator control system. Then, the voltage regulator control system enables the telescopic rod of the pneumatic drive component 1232 to move the adjusting rod 124. At this time, the pressure roller 1241 enters the interior of the first groove 231 to squeeze the plate 230. The squeezing force causes the plate 230 to rotate at an angle. At the same time, the angular displacement sensor 212 monitors the rotation angle of the plate 230 to prevent excessive rotation deviation. In this way, the operating angle of the plate 230 can be adjusted and controlled to adapt to arcs of different intensities.

[0050] Working principle: Please refer to Figures 1-8 As shown, during use, the rotation of the shaft 110 allows multiple first contacts 111 and second contacts 120 to connect and disconnect, thereby completing on-load tapping and phase shifting operations. When the second contact 120 separates from the first contact 111, the plate 230 moves and rises accordingly, intervening between the second contact 120 and the first contact 111. The arc generated between the second contact 120 and the first contact 111 is then drawn into the arc-extinguishing chamber 250 by the highly conductive guide plate 233. At this time, two electromagnetic generators 252 generate a magnetic field in multiple arc-extinguishing grids 251. According to the left-hand rule, the magnetic field will generate an electromagnetic force on the current. The direction of this force is perpendicular to the plane of the current and the magnetic field, which will guide the arc to actively enter the area where the arc-extinguishing grid 251 is located. Then, the arc will be divided and weakened under the action of multiple arc-extinguishing grids 251 and conducted to the surface of multiple conductive posts 253. Then, the conductive posts 253 output to the external insulating oil. In this way, when the first contact 111 separates from the second contact 120, the current can be actively guided away from the surface of the second contact 120 and the arc can be quickly divided and dispersed, thereby preventing the second contact 120 and the first contact 111 from being ablated.

[0051] When the rotating shaft 110 drives the rod 112 and the first contact 111 to rotate and separate, the roller 131 will enter the interior of the second groove 241. At this time, since the second groove 241 is inclined to the horizontal center line of the adjusting plate 240, the entry of the roller 131 will push the adjusting plate 240 and the movable frame 210 to move upward. Then the first elastic element 221 will be compressed. When the roller 131 completely leaves the interior of the second groove 241, that is, the first contact 111 and the second contact 120 are separated, the rebound force of the first elastic element 221 will drive the movable frame 210 to reset. In this way, the plate 230 can be used to rise in conjunction when the second contact 120 and the first contact 111 are separated, and the movable frame 210 can be reset when the second contact 120 and the first contact 111 are completely separated.

[0052] When the second contact 120 and the first contact 111 separate and generate an electric arc, the arc light sensor 122 monitors the arc and feeds back the arc intensity to the voltage regulator control system. Then, the voltage regulator control system can cause the telescopic rod of the pneumatic drive component 1232 to move the adjusting rod 124. At this time, the pressure roller 1241 will enter the interior of the first groove 231 to squeeze the plate 230. The squeezing force can cause the plate 230 to rotate at an angle. At the same time, the angular displacement sensor 212 can monitor the rotation angle of the plate 230 to prevent its rotation deviation from being too large. In this way, the operating angle of the plate 230 can be adjusted and controlled to adapt to electric arcs of different intensities.

[0053] The independent and combined operation procedures of the phase shifting device are as follows:

[0054] The specific operation of independent phase shifting is as follows: the shaft rotates - the phase adjustment disk protrusion pushes the phase switching contact - the contact separates to generate an electric arc - the plate rises to guide the electric arc - the arc extinguishing chamber divides to extinguish the electric arc - the contact docks to complete the phase switching;

[0055] Combined operation: Shaft rotation - first contact and second contact separate (on-load tapping), phase switching contact separates (phase shifting) - guidance protection components intervene synchronously - double arcs are guided to extinguish respectively - double contacts connect synchronously - tapping and phase shifting linkage are completed.

[0056] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A combined rapid on-load tap changer and phase shifter for a converter voltage regulator, characterized in that, include: A frame (100) and a rotating shaft (110) disposed inside the frame (100), the frame (100) being used to install components, the rotating shaft (110) being able to rotate in the direction of its central axis to complete on-load tapping and phase shifting operations; The rotating shaft (110) has a plurality of first contacts (111) on its outside. The first contacts (111) are distributed in a circumferentially spaced manner, and their height positions decrease sequentially at equal intervals. The frame (100) has a plurality of second contacts (120) inside, and the positions of the second contacts (120) correspond to the positions of the first contacts (111). The rotating shaft (110) can rotate and drive the plurality of first contacts (111) to engage and disengage with the plurality of second contacts (120). The guiding and protective assembly (200) includes a plurality of plates (230), each of the plates (230), a first contact (111), and a second contact (120) forming a group. The plates (230) can rise synchronously when the first contact (111) and the second contact (120) separate, and guide the electric arc away from the surface of the second contact (120). After guiding the electric arc, the plates (230) can weaken and disperse the electric arc and extinguish the electric arc with the help of insulating oil. The plates (230) can be reset when the first contact (111) and the second contact (120) are connected. A phase-shifting assembly, which includes a phase-shifting winding and a phase-switching contact; A guide groove (232) is provided on one side of the plate (230). The guide groove (232) is inclined to the vertical center line of the plate (230). A guide piece (233) is fixedly installed on one side of the inside of the guide groove (232). The guide piece (233) can actively guide the arc away from the surface of the second contact (120). The central axis of the guide groove (232) is inclined to the central axis of the plate (230) so that it has an inclined surface. One side of the guide piece (233) is attached to the inclined surface of the guide groove (232). One end of the guide piece (233) extends into the arc extinguishing chamber (250) and is located at the bottom of multiple arc extinguishing grids (251).

2. The combined rapid on-load tap changer and phase shifter for a converter voltage regulator according to claim 1, characterized in that, The guiding and protective assembly (200) further includes: an arc-extinguishing chamber (250), which is provided with a plurality of arc-extinguishing grids (251) inside. The plurality of arc-extinguishing grids (251) are arranged at equal intervals. Electromagnetic generators (252) are provided on both sides of the arc-extinguishing chamber (250). The arc-extinguishing grids (251) can generate a magnetic field through the electromagnetic generators (252) and actively introduce the electric arc guided by the plate (230) into the arc-extinguishing chamber (250). A plurality of conductive pillars (253) are provided on one side of the arc-extinguishing chamber (250). The conductive pillars (253) can disperse the electric arc into multiple small electric arcs after the arc is introduced into the arc-extinguishing grids (251).

3. The combined rapid on-load tap changer and phase shifter for a converter voltage regulator according to claim 1, characterized in that: The frame (100) is provided with several movable frames (210) inside. Each movable frame (210) and a plate (230) form a group. The bottom surface of the movable frame (210) is provided with an adjustment plate (240). A second groove (241) is opened on one side of the adjustment plate (240). The second groove (241) is inclined to the horizontal center line of the adjustment plate (240). The outside of the rotating shaft (110) is provided with several rods (112). The bottom surface of the rod (112) is provided with a positioning rod (130). One end of the positioning rod (130) is rotatably connected to a roller (131). Each roller (131) and a second groove (241) form a group. When the rotating shaft (110) drives the rod (112) to rotate, the roller (131) can rotate synchronously into the interior of the second groove (241).

4. The combined rapid on-load tap changer and phase shifter for a converter voltage regulator according to claim 3, characterized in that: The outer circular wall of the frame (100) is provided with a plurality of connecting sleeves (121). The bottom surface of the connecting sleeves (121) is provided with a positioning plate (123). An adjusting rod (124) is provided on one side of the positioning plate (123). A pressure roller (1241) is provided on one side of the adjusting rod (124). The plate (230) can swing eccentrically around the horizontal center line of the movable frame (210). A first groove (231) is provided on one side of the plate (230). The pressure roller (1241) can enter the first groove (231) when the plate (230) moves upward.

5. The combined rapid on-load tap changer and phase shifter for a converter voltage regulator according to claim 3, characterized in that: The frame (100) has a plurality of positioning posts (220) inside, and a first elastic element (221) is provided on the outside of the positioning posts (220). A connecting plate (222) is provided on one side of the movable frame (210). Each positioning post (220) and a connecting plate (222) form a group. The connecting plate (222) is movably sleeved with the positioning post (220). The first elastic element (221) can provide a reset power to the movable frame (210) after the roller (131) moves out of the second groove (241).

6. The combined rapid on-load tap changer and phase shifter for a converter voltage regulator according to claim 4, characterized in that: Each of the connecting sleeves (121) is provided with an arc light sensor (122) at its top. The arc light sensor (122) can monitor the arc intensity when the first contact (111) and the second contact (120) are separated. A pneumatic drive (1232) is provided on one side of the positioning plate (123). The telescopic rod of the pneumatic drive (1232) can drive the adjusting rod (124) to move. An angular displacement sensor (212) is provided on one side of the movable frame (210). The angular displacement sensor (212) can feed back the change in angle when the plate (230) rotates.

7. The combined rapid on-load tap changer and phase shifter for a converter voltage regulator according to claim 1, characterized in that: The conductive material of the guide piece (233) is higher than that of the second contact (120) and the first contact (111).

8. The combined rapid on-load tap changer and phase shifter for a converter voltage regulator according to claim 2, characterized in that: One end of the conductive post (253) has a thin sheet, and multiple grooves are provided on both sides of it.

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