Tap changer position recognition and regulation system
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-02
- Publication Date
- 2026-08-11
Smart Images
Figure CN122552371A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of power equipment technology, and in particular to a tap changer position identification and adjustment system. Background Technology
[0002] On-load tap changers are widely used at critical nodes in power systems, serving to connect the grid, regulate reactive power, and stabilize loads. The on-load tap changer (OLTC) is a key component of the OLTC's operating mechanism and the only moving part within it. The OLTC body is connected to the high-voltage side coil of the OLTC, and by changing the tap position, on-load tap regulation in the distribution network can be achieved.
[0003] With the rapid development of the power industry and the ever-growing national economy, the requirements for power reliability and power quality are increasing, which poses greater challenges to the power grid. Therefore, it is essential to improve power quality and ensure the safe and reliable operation of equipment.
[0004] Therefore, the proper functioning of the on-load tap changer is crucial to the safety of the on-load tap-changing transformer and even the entire power system. Summary of the Invention
[0005] To address one of the aforementioned technical deficiencies, this application provides a tap changer position identification and adjustment system.
[0006] In a first aspect, this application provides a tap changer position identification and adjustment system, which includes: a drive mechanism, a position adjustment mechanism, a control system, and an on-load tap changer body; The control system is connected to the drive mechanism and is used to control the operation of the drive mechanism. The gear adjustment mechanism is located at the lower end of the drive mechanism. When the drive mechanism is running, it drives the gear adjustment mechanism to rotate, and adjusts the tap changer through the on-load tap changer body.
[0007] Optionally, the drive mechanism includes: a drive motor; The lower end of the motor shaft of the drive motor is equipped with a gear adjustment mechanism; The gear adjustment mechanism is connected to the motor shaft of the drive motor via a coupling.
[0008] Optionally, the gear adjustment mechanism includes: a gear divider, a gear signal plate, a rotating shaft, a support plate, a gear driver, a gear contact plate, a gear signal plate spacer sleeve, and a stud. The gear divider and the gear signal plate are coaxially fixed on the rotating shaft; The rotating shaft is fixed to the support plate; The gear shift driver is connected to the motor shaft of the drive motor; Driven by the gear position driver, the gear position divider rotates along with the gear position contact piece, which slides on the gear position signal plate. The gear position signal plate spacer sleeve is fixed to the gear position signal plate by studs.
[0009] Optionally, the drive mechanism may also include: a gear position display component; The tap position display component is used to display the tap position information and status of the on-load tap changer.
[0010] Optionally, the on-load tap changer body includes: a vacuum tube assembly, a selector system, and a polarity selector system.
[0011] Optionally, the vacuum tube assembly, the selector system, and the polarity selector system are arranged laterally along the square drive rod of the on-load tap changer body and are respectively fixed to the square drive rod by flanges to form a set; The on-load tap changer comprises three sets along the transverse direction.
[0012] Optionally, the selector system includes: a mounting plate, lead posts, a drive wheel, and a grooved wheel; The vacuum tube assembly includes: a cam, a main switch, a vacuum tube, and a transition resistor; The polarity selector system includes: gears, racks, and polarity selector pulleys; The cam rotates and rotates the polarity selector slot wheel by a fixed angle. At the same time, the cam rotation drives the vacuum tube to switch on and off according to a preset sequence. Simultaneously, the moving contact rotates with the cam, and the vacuum tube switches from one stationary contact to the adjacent stationary contact according to a preset sequence, completing one voltage regulation level switch.
[0013] Optionally, the system may also include: a powertrain system; The power transmission system includes: drive shaft, drive bevel gear, bearing, and driven bevel gear; The upper end of the drive shaft is connected to the lower end of the gear position driver; the lower end of the motor shaft of the drive motor is connected to the gear position driver. When the drive motor runs, it drives the gear position driver to rotate, and the gear position driver drives the drive shaft to rotate. The driving bevel gear is fixed on the driving shaft and meshes with the driven bevel gear; the driving bevel gear is used to drive the driven bevel gear to rotate. The driven bevel gear is coaxial with and fixed to the square drive rod; the driven bevel gear is used to drive the square drive rod to rotate, thereby driving the cams fixed to the square drive rod to rotate, so that the selector system and polarity selector system of the on-load tap changer can operate smoothly.
[0014] Optionally, the control system includes: an operation panel, an ARM module, a switching power supply module, and a three-phase circuit module; Among them, the three-phase circuit module, the switching power supply module, and the ARM module are all placed on the three-phase circuit board of the control system chassis; The control panel is located at the top of the system's casing; The control panel is labeled with the functions of each part of the internal circuitry, as well as buttons for identifying and adjusting the tap changer positions.
[0015] Optionally, the three-phase circuit board includes a power processing module and a current transformer module; The switching power supply module includes: an AC input terminal, a DC output terminal, a heat sink, and electrolytic capacitors; The ARM module includes: an LCD module interface, a power metering chip, a USB module, a WIFI module, an opto-isolation module, and a motor control and power signal interface module.
[0016] This application provides a tap changer position identification and adjustment system, which includes: a drive mechanism, a tap changer adjustment mechanism, a control system, and an on-load tap changer body. The control system is connected to the drive mechanism and is used to control the operation of the drive mechanism. The tap changer adjustment mechanism is located at the lower end of the drive mechanism. When the drive mechanism is running, it drives the tap changer adjustment mechanism to rotate, thereby adjusting the tap changer through the on-load tap changer body. The system provided in this application identifies and adjusts the on-load tap changer position through the drive mechanism, tap changer adjustment mechanism, control system, and on-load tap changer body, adapting to power grid load fluctuations, voltage changes, and maintaining the stability and reliability of the power system. It is of great significance for stable power grid operation, intelligent operation and maintenance, and fault diagnosis. Attached Figure Description
[0017] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 A schematic diagram of a tap changer position identification and adjustment system provided in this application embodiment; Figure 2 This is a schematic diagram of the structure of a gear adjustment mechanism provided in an embodiment of this application; Figure 3 This is a schematic diagram of a power transmission system provided in an embodiment of this application. Detailed Implementation
[0018] To make the technical solutions and advantages of the embodiments of this application clearer, the exemplary embodiments of this application will be described in further detail below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not an exhaustive list of all embodiments. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.
[0019] In the process of developing this application, the inventors discovered that with the rapid development of the power industry and the ever-growing national economy, the demands for power reliability and quality are increasing, posing a growing challenge to the power grid. Therefore, improving power quality and ensuring the safe and reliable operation of equipment is essential. Consequently, the proper functioning of on-load tap changers is crucial to the safety of on-load tap-changing transformers and even the entire power system.
[0020] To address the aforementioned issues, this application provides a tap changer position identification and adjustment system. The system includes a drive mechanism, a position adjustment mechanism, a control system, and an on-load tap changer body. The control system is connected to the drive mechanism and controls its operation. The position adjustment mechanism is located at the lower end of the drive mechanism; when the drive mechanism operates, it rotates the position adjustment mechanism, thereby adjusting the tap changer position via the on-load tap changer body. The system provided in this application identifies and adjusts the on-load tap changer position through the drive mechanism, position adjustment mechanism, control system, and on-load tap changer body, adapting to grid load fluctuations, voltage changes, and maintaining the stability and reliability of the power system. This is of great significance for stable grid operation, intelligent maintenance, and fault diagnosis.
[0021] To adapt to power grid load fluctuations, voltage changes, and maintain the stability and reliability of the power system, it is necessary to dynamically adjust the output voltage by switching the tap position of on-load tap changers. Accurate identification of the tap position is crucial for stable power grid operation, intelligent maintenance, and fault diagnosis. Therefore, the tap changer position identification and adjustment system provided in this embodiment has a clear functional structure. Installed above the tap changer selector, it uses a motor-driven rotating shaft for tap position adjustment. Connected to the control system via wires, it facilitates remote tap position adjustment and control without requiring personnel to approach the transformer.
[0022] See Figure 1 This embodiment provides a tap changer position identification and adjustment system, which includes: a drive mechanism (such as...) Figure 1 1) Gear adjustment mechanism (such as Figure 1 2) Control system (such as Figure 1 3) and the on-load tap changer body (such as Figure 1 (4 in the middle).
[0023] Control system (such as) Figure 1 3) and the drive mechanism (such as Figure 1 1) Connected to the control system (such as Figure 1 3) is used to control the drive mechanism (such as...) Figure 1 1) Run.
[0024] Gear adjustment mechanism (such as Figure 12) Located in the drive mechanism (such as Figure 1 The lower end of 1), the drive mechanism (such as Figure 1 1) During operation, it drives the gear adjustment mechanism (such as...) Figure 1 2) Rotation, via the on-load tap changer body (such as...) Figure 1 4) Adjust the tap changer.
[0025] 1. Drive mechanism (such as...) Figure 1 1) Drive mechanism (such as) Figure 1 1) includes: drive motor.
[0026] The lower end of the drive motor shaft is equipped with a gear adjustment mechanism (such as...). Figure 1 2).
[0027] Gear adjustment mechanism (such as Figure 1 2) It is connected to the motor shaft of the drive motor via a coupling.
[0028] Additionally, the drive mechanism (such as Figure 1 1) also includes: gear position display component.
[0029] The tap position display component is used to display the tap position information and status of the on-load tap changer.
[0030] 2. Gear adjustment mechanism (e.g.) Figure 1 2) like Figure 2 As shown, the gear adjustment mechanism (such as...) Figure 1 2) includes: gear shift dial (such as...) Figure 2 20) Gear signal board (such as Figure 2 18) Rotation axis (such as Figure 2 22) Support plate (such as Figure 2 15) Gear drive (such as Figure 2 14) Gear contact piece (such as Figure 2 21) Gear signal board spacer sleeve (such as Figure 2 19) Studs (such as Figure 2 16 in the middle.
[0031] Gear divider (e.g.) Figure 2 20 in the middle) and gear position signal board (such as Figure 2 18) Coaxially fixed to the rotating shaft (e.g.) Figure 2 On 22) in the middle. Gear shift dial (such as Figure 2 20 in the middle) and gear position signal board (such as Figure 2 A stop contact piece (such as 18) is provided between them. Figure 2 21), the gear position contact piece (such as...) Figure 2One end of 21) is connected to the gear signal board (such as...) Figure 2 The metal ring at the center of 18) is in contact with the other end of the gear position signal board (e.g., Figure 2 18) The signal contacts around it are in contact.
[0032] Rotation axis (e.g.) Figure 2 22) Fixed to the support plate (e.g.) Figure 2 On 15), such as the rotation axis (e.g. Figure 2 22) Passing through the support plate (such as Figure 2 On 15) of the middle. Rotation axis (such as Figure 2 22) and gear shift drive (such as Figure 2 (14) Connected.
[0033] support plate (e.g.) Figure 2 15) is set on the mounting base.
[0034] Gear drive (e.g.) Figure 2 14) is connected to the motor shaft of the drive motor, for example, the lower end of the motor shaft of the drive motor is connected to the gear drive (such as...). Figure 2 Connect to 14) in the above. In specific implementation, the gear drive (such as Figure 2 14) can be fixed on the motor shaft, and drive the gear drive (such as...) when the motor is running. Figure 2 14) Rotation. Gear drive (such as...) Figure 2 14) The gear selector dial can be moved (e.g., Figure 2 20) is used to display the tap position information and status of the tap changer.
[0035] Gear divider (e.g.) Figure 2 20) in the gear drive (such as Figure 2 Driven by 14) in the middle, the gear shift contact piece (such as Figure 2 21) rotates together, and the gear contact piece (such as Figure 2 21) In the gear position signal panel (e.g. Figure 2 Slide on 18) of the gear position signal plate spacer (e.g.) Figure 2 19) via studs (such as Figure 2 16) Fixed to the gear position signal plate (e.g.) Figure 2 18) above.
[0036] 3. Control system (such as...) Figure 1 3) Control system (such as) Figure 1 3) includes three circuit parts: operation panel, ARM module, switching power supply module and three-phase circuit module.
[0037] The three-phase circuit module, switching power supply module, and ARM module are all placed on the three-phase circuit board of the control system chassis.
[0038] The three-phase circuit board includes a power processing module and a current transformer module. The current transformer module is small in size, lightweight, and has high linear output current accuracy.
[0039] The switching power supply module includes circuit modules such as AC input terminals, DC output terminals, heat sinks, and electrolytic capacitors, ensuring a 24V DC output when an AC input is connected. The switching power supply module is connected to a three-phase circuit board.
[0040] The ARM (Advanced RISC Machine) module includes: an LCD module interface, a power metering chip, a USB (Universal Serial Bus) module, a WIFI (Wireless Fidelity) module, an opto-isolation module, and motor control and power signal interface modules. These modules are distributed across different areas of the ARM board to implement their respective functions. The ARM module is connected to both the switching power supply module and the three-phase circuit board, and is powered by the switching power supply module.
[0041] The control panel is located at the top of the system's casing.
[0042] The control panel is labeled with the functions of each part of the internal circuitry, as well as buttons for identifying and adjusting the tap changer position. These buttons allow for the identification and adjustment of the tap changer position, and the identified position information is displayed on an LCD screen. This LCD screen is connected to the tap changer position identification and adjustment system provided in this embodiment via the LCD module interface on the ARM module.
[0043] 4. On-load tap changer body (e.g.) Figure 1 (4 in the middle).
[0044] On-load tap changer body (such as Figure 1 4) includes: vacuum tube assembly, selector system and polarity selector system.
[0045] Among them, the vacuum tube assembly, selector system, and polarity selector system are located along the on-load tap changer body (such as...). Figure 1 The square drive rods in section 4) are arranged horizontally and fixed to the square drive rods by flanges to form a set.
[0046] The on-load tap changer comprises three sets along the transverse direction.
[0047] In other words, the on-load tap changer body (such as...) Figure 1The vacuum tube assembly (4) in the middle, the selector system and the polarity selector system are arranged laterally along the square drive rod and are fixed to the square drive rod by flanges respectively. The three are combined into a group, and the tap changer is provided in three groups along the horizontal direction.
[0048] The selector system includes: a mounting plate, lead posts, a drive wheel, and a grooved wheel.
[0049] The vacuum tube assembly includes: a cam, a main switch, a vacuum tube, and a transition resistor.
[0050] The polarity selector system includes: gears, racks, and polarity selector pulleys.
[0051] The cam rotates and, by actuating the polarity selector's slotted wheel, rotates by a fixed angle, thereby causing the entire gear selector disc (such as...) Figure 2 20) Rotate to a fixed angle. At the same time, the cam rotates, causing the corresponding vacuum tube to switch on and off according to a preset sequence. Simultaneously, the moving contact rotates with the cam, cooperating with the vacuum tube to switch from one stationary contact to the adjacent stationary contact according to a preset sequence, completing one voltage adjustment level switch.
[0052] In addition, the tap changer position recognition and adjustment system provided in this embodiment also includes a power transmission system.
[0053] See Figure 3 The power transmission system includes: a drive shaft (such as...) Figure 3 24) Driving bevel gear (such as Figure 3 25), bearings (such as Figure 3 26) Driven bevel gear (such as Figure 3 27 in the middle.
[0054] drive shaft (e.g.) Figure 3 24) The upper end of the gear shift drive (such as Figure 2 (14) The lower end is connected to the gear shift driver. Figure 2 Connected to 14), the drive motor drives the gear shift driver (such as...) when running. Figure 2 14) rotates, gear drive (such as Figure 2 14) drives the drive shaft (such as...) Figure 3 24) Rotation.
[0055] Driven bevel gear (e.g.) Figure 3 25) is fixed on the drive shaft (e.g.) Figure 3 On 24), with the driven bevel gear (such as...) Figure 3 27) Meshing. Driving bevel gear (such as...) Figure 3 25) is used to drive the driven bevel gear (such as...) Figure 3 27) Rotation.
[0056] Driven bevel gear (such as Figure 3 27) is coaxial with and fixed to the square drive rod. Driven bevel gear (e.g.) Figure 3 27) is used to drive the square drive rod to rotate, thereby driving the cams fixed on the square drive rod to rotate, so that the selector system and polarity selector system of the on-load tap changer can operate smoothly.
[0057] The power transmission system is driven by a drive motor, and the rotating shaft (such as...) Figure 2 22) and gear shift drive (such as Figure 2 14) is connected to drive the driving bevel gear (such as...) Figure 3 25) rotates, the driving bevel gear (such as Figure 3 25) and driven bevel gear (such as Figure 3 27) meshing, driving the driven bevel gear (such as...) Figure 3 27) rotates, driven bevel gear (such as Figure 3 27) Rotation drives the on-load tap changer body (such as...) Figure 1 The square drive rod in step 4) rotates, thereby driving the cams fixed on the square drive rod to rotate, so that the selector system and polarity selector system of the on-load tap changer can operate smoothly.
[0058] The specific implementation process of the tap changer position identification and adjustment system provided in this embodiment when identifying and adjusting the tap changer position is as follows: Before the tap changer is switched, the speed adjustment mechanism (such as...) Figure 1 2) will pass through the gear position contact piece (such as Figure 2 21) in the middle contacts the gear position signal plate (e.g. Figure 2 The contact on (18) identifies the current tap position information of the tap changer and simultaneously sends the identified tap position information to the control system (e.g., ...). Figure 1 The metering chip in (3) is located within the control system (e.g., ...). Figure 1 On the LCD screen of 3).
[0059] Through control systems (such as Figure 1 3) Buttons on the control panel control the drive mechanism (such as...) Figure 1 The drive motor in step 1) rotates, and at the same time, the drive motor drives the gear shift driver (such as...). Figure 2 14) rotates, and the gear drive (such as Figure 2 The rotation of 14) drives the driving bevel gear (such as...) Figure 3 25) rotates, the driving bevel gear (such as Figure 3 25) in the middle then drives the driven bevel gear (such as) that meshes with it. Figure 327) and the square drive rod rotate, thereby driving the on-load tap changer body (such as Figure 1 In step 4), the selector pulleys on each selector rotate, simultaneously driving the moving contacts on the selectors in a sequential manner to switch the voltage regulation gear. At the same time, the gear driver (such as...) Figure 2 14) Rotate one revolution, gear divider (such as...) Figure 2 20) rotates to a certain angle, and the gear contact plate (such as Figure 2 21) then turns a certain angle and from the gear signal panel (such as Figure 2 In step 18), one contact switches to another to complete one adjustment of the tap changer position. If the drive motor rotates clockwise, the tap changer position is adjusted up; if the drive motor rotates counterclockwise, the tap changer position is adjusted down. This completes the identification and adjustment of the tap changer position signal.
[0060] In the tap changer position identification and adjustment system provided in this embodiment, the on-load tap changer adopts a horizontal layout, which can reduce the distance from the transformer tap lead to the switch, resulting in a smaller installation volume, a more compact structure, and a smaller overall switch size.
[0061] The control system of the tap changer gear identification and adjustment system provided in this embodiment is integrated into a single housing and consists of three circuits. It has a high degree of integration and can simultaneously realize multiple functions such as motor control and LCD display.
[0062] The control system in the tap changer position identification and adjustment system provided in this embodiment can be remotely connected to the drive motor, which facilitates remote identification and adjustment of the tap changer position, making operation more convenient and eliminating the need for personnel to approach the transformer.
[0063] This embodiment provides a tap changer position identification and adjustment system, which includes: a drive mechanism, a position adjustment mechanism, a control system, and an on-load tap changer body. The control system is connected to the drive mechanism and is used to control the operation of the drive mechanism. The position adjustment mechanism is located at the lower end of the drive mechanism. When the drive mechanism is running, it drives the position adjustment mechanism to rotate, thereby adjusting the tap changer through the on-load tap changer body. The system provided in this embodiment identifies and adjusts the on-load tap changer position through the drive mechanism, position adjustment mechanism, control system, and on-load tap changer body, adapting to grid load fluctuations, voltage changes, and maintaining the stability and reliability of the power system. It is of great significance for stable grid operation, intelligent operation and maintenance, and fault diagnosis.
[0064] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code. The solutions in the embodiments of this application can be implemented in various computer languages, such as the object-oriented programming language Java and the interpreted scripting language JavaScript.
[0065] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.
[0066] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.
[0067] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.
[0068] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.
[0069] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.
[0070] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.
Claims
1. A tap changer position identification and adjustment system, characterized in that, The system includes: a drive mechanism, a gear adjustment mechanism, a control system, and an on-load tap changer body; The control system is connected to the drive mechanism, and the control system is used to control the operation of the drive mechanism. The gear adjustment mechanism is located at the lower end of the drive mechanism. When the drive mechanism is running, it drives the gear adjustment mechanism to rotate, and adjusts the tap changer through the on-load tap changer body.
2. The system of claim 1, wherein, The driving mechanism includes: a drive motor; The lower end of the motor shaft of the drive motor is provided with a gear adjustment mechanism; The gear adjustment mechanism is connected to the motor shaft of the drive motor via a coupling.
3. The system of claim 2, wherein, The gear adjustment mechanism includes: a gear divider, a gear signal plate, a rotating shaft, a support plate, a gear driver, a gear contact piece, a gear signal plate spacer sleeve, and a stud. The gear divider and the gear signal plate are coaxially fixed on the rotating shaft; The rotating shaft is fixed to the support plate; The gear shift driver is connected to the motor shaft of the drive motor. The gear position divider rotates together with the gear position contact piece under the drive of the gear position driver. The gear position contact piece slides on the gear position signal plate, and the gear position signal plate spacer sleeve is fixed on the gear position signal plate by the stud.
4. The system of claim 3, wherein, The drive mechanism further includes: a gear position display component; The gear position display component is used to display the gear position information and status of the on-load tap changer.
5. The system of claim 3, wherein, The on-load tap changer body includes: a vacuum tube assembly, a selector system, and a polarity selector system.
6. The system of claim 4, wherein, The vacuum tube assembly, selector system, and polarity selector system are arranged laterally along the square drive rod of the on-load tap changer body and are respectively fixed to the square drive rod by flanges, forming a set. The on-load tap changer comprises three sets along the transverse direction.
7. The system of claim 5 or 6, wherein, The selector system includes: a fixed plate, lead posts, a drive wheel, and a grooved wheel; The vacuum tube assembly includes: a cam, a main switch, a vacuum tube, and a transition resistor; The polarity selector system includes: a gear, a rack, and a polarity selector hub wheel; The cam rotates and rotates the polarity selector's slotted wheel by a fixed angle. At the same time, the rotation of the cam drives the vacuum tube to perform on / off actions according to a preset sequence. Simultaneously, the moving contact rotates with the cam, cooperating with the vacuum tube to switch from one stationary contact to an adjacent stationary contact according to a preset sequence, completing one voltage regulation level switch.
8. The system of claim 5 or 6, wherein, The system also includes: a power transmission system; The power transmission system includes: a drive shaft, a drive bevel gear, a bearing, and a driven bevel gear; The upper end of the drive shaft is connected to the lower end of the gear position driver; the lower end of the motor shaft of the drive motor is connected to the gear position driver, and when the drive motor runs, it drives the gear position driver to rotate, and the gear position driver drives the drive shaft to rotate. The driving bevel gear is fixed on the driving shaft and meshes with the driven bevel gear; the driving bevel gear is used to drive the driven bevel gear to rotate. The driven bevel gear is coaxial with and fixed to the square drive rod; the driven bevel gear is used to drive the square drive rod to rotate, thereby driving each cam fixed to the square drive rod to rotate, so that the selector system and polarity selector system of the on-load tap changer can operate smoothly.
9. The system of claim 1, wherein, The control system includes: an operation panel, an ARM module, a switching power supply module, and a three-phase circuit module; The three-phase circuit module, the switching power supply module, and the ARM module are all placed on the three-phase circuit board of the control system housing; The control panel is located at the top of the system's casing; The operation panel is labeled with the functions of each part implemented by the internal circuit, as well as buttons for identifying and adjusting the tap changer position.
10. The system of claim 9, wherein, The three-phase circuit board includes a power processing module and a current transformer module. The switching power supply module includes: an AC input terminal, a DC output terminal, a heat sink, and an electrolytic capacitor; The ARM module includes: an LCD module interface, a power metering chip, a USB module, a WIFI module, an opto-isolation module, and a motor control and power signal interface module.