Miniaturized installation and adjustment practical training system for variable pitch system of wind turbine generator

Abstract

The invention relates to the technical field of wind power practical training, in particular to a miniature installation and adjustment practical training system for a variable-pitch system of a wind turbine generator, which comprises a variable-pitch execution mechanism and a control system, the variable-pitch execution mechanism comprises a practical training platform, a blade model, a variable-pitch bearing, an electric variable-pitch driving device model, a variable-pitch sensor, a control panel, a variable-pitch lubrication system, an operation table top and an auxiliary tool. The control system comprises a variable pitch control logic module, a normal variable pitch and emergency feathering module, a fault self-diagnosis and protection module, a monitoring module and a practical training equipment data sharing expansion module. The real structure and the operation principle of the variable-pitch execution mechanism of the wind turbine generator are simulated through the variable-pitch execution mechanism, so that students can intuitively understand hardware composition and the working process of a variable-pitch system, operation parameters and safety control logic of the actual variable-pitch system are accurately simulated, and the students are familiar with the control requirements of the variable-pitch system at different angles.

Description

Technical Field

[0001] The invention relates to the technical field of wind power training, and in particular to a miniaturized installation and adjustment training system for a wind turbine pitch system. Background Art

[0002] As one of the core parts of the control system of large wind turbines, the pitch system plays a very important role in the safe, stable and efficient operation of the unit. Stable pitch control has become one of the hot spots and difficulties in the current research of large wind turbine control technology. Pitch control mainly controls the aerodynamic torque and aerodynamic power captured by the wind rotor by adjusting the pitch angle of the blades to change the angle of attack of the airflow on the blades.

[0003] Through the wind turbine pitch control training, trainees can deeply understand the working principle and structure of the wind turbine pitch control system, master the operation methods and maintenance points of the pitch control system, and be able to diagnose and handle common faults of the pitch control system, cultivate practical hands-on ability and problem-solving ability, and lay a solid foundation for future work in the operation, maintenance and management of wind turbines.

[0004] However, the actual wind turbine pitch system is currently large in size, complex in structure and expensive, making it difficult to use directly for teaching and training. In addition, there is a lack of real pitch system simulation, and it is impossible to truly simulate the operation and fault conditions of the wind turbine pitch system, which makes it difficult to cultivate operators' ability to handle various situations in actual operation. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a miniaturized installation and adjustment training system for a wind turbine pitch system, which solves the problems of difficulty in training a wind turbine pitch system and lack of simulation of a real pitch system.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a wind turbine pitch system miniaturized installation and adjustment training system, including a pitch actuator, the pitch actuator including a training platform, a blade model, a pitch bearing, an electric pitch drive device model, a pitch sensor, a control panel, a pitch lubrication system, an operating table and auxiliary tools;

[0007] The training platform is used for the installation and placement of hardware; the blade model is made of nylon and is used to simulate the root structure of the wind turbine blade. The blade model is connected to the pitch bearing; the pitch bearing adopts an inner gear ring single-row ball bearing with an inner diameter of 710 mm; the electric pitch drive device model adopts a set of motor and reducer drive devices, and the pitch rate is ≤8° / s; the pitch sensor includes an encoder and a limit switch for safe shutdown and emergency shutdown. The trigger angles of the pitch sensor to stop the pitch are 91°, 95° and -5° respectively, and the pitch stop is triggered by a wear-resistant metal collision block; the pitch lubrication system is used for the lubrication of the pitch bearing ball and tooth surface; a shock-absorbing rubber pad is laid on the operating table, and parts and tooling are placed on the table; the auxiliary tools are used to provide auxiliary equipment and tools required for the pitch system training, including but not limited to mobile parts racks, small cranes and slings, and disassembly and assembly tools.

[0008] Preferably, it also includes a control system, which includes a pitch control logic module, a normal pitch and emergency feathering module, a fault self-diagnosis and protection module, a monitoring module and a training equipment data sharing and expansion module.

[0009] Preferably, the pitch control logic module is used to follow the pitch control system state switching logic, and the normal pitch and emergency pitch modules are used to control the pitch angle during the pitch process.

[0010] Preferably, the normal pitch control and emergency pitch feathering module includes an automatic pitch control unit, a manual pitch control unit and a safe pitch feathering unit, and the fault self-diagnosis and protection module is used to monitor its own status in real time and detect faults or abnormal conditions, and then take corresponding protection measures.

[0011] Preferably, the monitoring module is used to monitor the real-time data of the variable pitch system and view the real-time fault codes, and can perform fault troubleshooting and repair training based on the simulated fault codes.

[0012] Preferably, the training equipment data sharing extension module is interconnected with each module, so that the equipment can not only run training independently, but also achieve smooth and efficient information exchange and collaborative work between the devices; through the training equipment data sharing extension module, unified data management is achieved on the basis of intercommunication between devices, including the display of equipment status information, fault information, and training examination information.

[0013] Working Principle:.

[0014] The present invention provides a miniaturized installation and adjustment training system for a wind turbine pitch system. It has the following beneficial effects:

[0015] 1. The present invention simulates the real structure and operation principle of the wind turbine pitch actuator by setting up components such as a training platform, a blade model, a pitch bearing, an electric pitch drive device model, a pitch sensor, and a pitch lubrication system, so that trainees can intuitively understand the hardware composition and working process of the pitch system. The pitch rate of the electric pitch drive device model is ≤8° / s, and the trigger angles of the pitch sensor to stop pitch are 91°, 95°, and -5°, respectively. The operating parameters and safety control logic of the actual pitch system are accurately simulated, so that trainees can be familiar with the control requirements of the pitch system at different angles.

[0016] 2. The present invention uses a variable pitch sensor for safe shutdown and emergency shutdown, which is triggered by a wear-resistant metal collision block, to ensure the safety of the training process while simulating real operation. The fault self-diagnosis and protection module monitors its own status in real time and detects faults or abnormal conditions, and then takes corresponding protection measures, such as shutting down or adjusting the operating status. At the same time, the monitoring module can view real-time fault codes, and trainees can perform troubleshooting and repair training based on the simulated fault codes to improve their proficiency and efficiency in handling real faults.

[0017] 3. The present invention interconnects and interoperates with each module through the training equipment data sharing expansion module. The equipment can not only independently run training to meet different training scenarios and needs, but also achieve smooth and efficient information exchange and collaborative work between various devices, thereby enhancing the flexibility and comprehensiveness of training. The training equipment data sharing expansion module realizes unified data management on the basis of intercommunication between devices, including the display of equipment status information, fault information, and training test information, which facilitates teachers and trainees to comprehensively manage and evaluate the training process and results. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a system structure block diagram of the present invention;

[0019] Figure 2 This is a logic diagram of state switching of a pitch control system of a pitch control logic module of the present invention. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments 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 creative work are within the scope of protection of the present invention.

[0021] Example:

[0022] like Figure 1-2As shown, an embodiment of the present invention provides a miniaturized installation and adjustment training system for a wind turbine pitch system, including a pitch actuator and a control system. The pitch actuator includes a training platform, a blade model, a pitch bearing, an electric pitch drive device model, a pitch sensor, a control panel, a pitch lubrication system, an operating table, and auxiliary tools.

[0023] The training platform is used for the installation and placement of hardware; the blade model is made of nylon and is used to simulate the root structure of the wind turbine blade. The blade model is connected to the pitch bearing; the pitch bearing adopts a single-row ball bearing with an internal gear ring and an inner diameter of 710mm; the electric pitch drive device model adopts a set of motor and reducer drive devices, and the pitch rate is ≤8° / s; the pitch sensor includes an encoder and a limit switch for safe shutdown and emergency shutdown. The trigger angles of the pitch sensor to stop the pitch are 91°, 95° and -5° respectively, and the pitch stop is triggered by a wear-resistant metal collision block; the pitch lubrication system is used for the lubrication of the pitch bearing ball and tooth surface; shock-absorbing rubber pads are laid on the operating table, and parts and tooling are placed on the table; auxiliary tools are used to provide auxiliary equipment and tools required for pitch system training, including but not limited to mobile parts racks, small cranes and slings, and disassembly and assembly tools.

[0024] During the training, when the operator starts the automatic pitch mode, the pitch control logic module calculates the required pitch angle according to the preset wind speed simulation value and sends instructions to the electric pitch drive device model. The motor starts to run, and the speed reducer converts the high-speed and low-torque power into low-speed and high-torque, driving the pitch bearing to rotate slowly. For example, when the simulated wind speed is 10m / s, the system calculates that the blade model needs to be pitched to 30°. Under the synergy of the motor and the speed reducer, after a certain period of operation, the blade model gradually rotates to the 30° position. At this time, the encoder monitors the pitch angle in real time and feeds back to the control system to ensure the accuracy of the pitch angle.

[0025] The control system includes a pitch control logic module, a normal pitch and emergency feathering module, a fault self-diagnosis and protection module, a monitoring module and a training equipment data sharing and expansion module.

[0026] The pitch control logic module is used to follow the pitch control system state switching logic, as follows Figure 1 As shown, where:

[0027] T1-Power on State is the power-on state, which is mainly used to complete parameter initialization;

[0028] T2-Standby State is the pitch standby state, indicating that the driver is not enabled and the motor brake is not released;

[0029] T3-Normal State is the normal pitch state, indicating that MPC is enabled, the motor brake is released, and the pitch system follows the position command of the master control;

[0030] T6-Manual State is the manual service mode of the pitch control system, which means that the pitch control system is only controlled by the hand control box, and can realize fast and slow forward and reverse rotation and encoder calibration;

[0031] T7-Emergency State is emergency propeller feathering, indicating that the propeller no longer responds to the position and speed commands of the main control until the limit switch is pressed.

[0032] The variable pitch training system is divided into three fault levels; the three faults are uploaded to the main control in real time, LEV-1, LEV-2, and LEV-3. When the fault source signal disappears, the corresponding fault is automatically cleared without the need for a reset command from the main control.

[0033] The normal pitch and emergency pitch modules are used to control the pitch angle during the pitch process, and the changes in the pitch angle are displayed through obvious markings.

[0034] The normal pitch and emergency feathering modules include automatic pitch units, manual pitch units, and safe feathering units. The fault self-diagnosis and protection module is used to monitor its own status in real time and detect faults or abnormal conditions, and then take corresponding protection measures, such as shutting down or adjusting the operating status, to prevent further damage. During the training process, the motor current of the electric pitch drive device model suddenly increased abnormally, and the fault self-diagnosis and protection module immediately detected this abnormality. The module analyzes the data from the current sensor and determines that it may be an overload of the motor or a jam inside the reducer. At this time, the fault self-diagnosis and protection module quickly sends a shutdown command to the electric pitch drive device model to stop the motor from running to prevent the motor from burning due to long-term overload. At the same time, the module records the fault information and displays it to the operator through the monitoring module, prompting the fault type and possible causes, which is convenient for the operator to conduct subsequent troubleshooting and repair.

[0035] The monitoring module is used to monitor the real-time data of the variable pitch system and view the real-time fault codes. Fault detection and repair training can be performed based on the simulated fault codes to improve the proficiency and efficiency of real fault handling.

[0036] The training equipment data sharing extension module is interconnected with each module, so that the equipment can run training independently and realize smooth and efficient information exchange and collaborative work between each device; the training equipment data sharing extension module realizes unified data management on the basis of intercommunication between devices, including the display of equipment status information, fault information, and training test information. In a multi-person collaborative training, student A is responsible for operating the variable pitch actuator, student B monitors the operation data of the variable pitch system in real time through the monitoring module, and student C uses the training equipment data sharing extension module to analyze and record the equipment status information. When student A makes an error operation during the manual variable pitch operation, causing the variable pitch angle to approach the dangerous value, student B promptly discovers and notifies student A to stop the operation through the monitoring module. At the same time, student C uses the real-time data obtained by the data sharing extension module to analyze the cause of the error operation and provide correct operation suggestions to student A. In this way, efficient information exchange and collaborative work are achieved between the devices and between students, which improves the training effect.

[0037] The training content includes the following aspects:

[0038] Motor electrical wiring training: Wiring the electrical circuits connecting the electric pitch drive model to the motor to ensure that the motor can work safely and efficiently.

[0039] Sensor wiring training: Wiring the limit switches, encoders, etc. of the pitch sensor to ensure normal operation of the system.

[0040] Automatic electric pitch control training: Master the operation methods of automatic control of the pitch system and realize pitch action adjustment.

[0041] Manual electric pitch control training: Master the manual control operation of the pitch system to achieve pitch action adjustment.

[0042] Safety feathering training: In an emergency, the emergency feathering module is used to feather the blades safely and master the principle of emergency feathering.

[0043] Pitch bearing lubrication and maintenance: The pitch bearing is lubricated through the pitch lubrication system. By understanding the lubrication method of the pitch bearing, the lubrication and maintenance of the pitch bearing can be performed.

[0044] Sensor calibration training: perform position calibration on limit switches, encoders, etc., and master the calibration methods of wind turbine pitch sensors.

[0045] Regular inspection and maintenance of pitch motors: Through exercises on electric pitch drive devices, learn the disassembly and assembly methods, maintenance methods and corresponding procedures of pitch motors and reducers.

[0046] Measurement and adjustment of pitch gear clearance: Correct adjustment of gear clearance is crucial to ensure smooth operation of the pitch system, so it is necessary to master the adjustment method of gear clearance.

[0047] Blade installation training: Use blade models to simulate the blade installation method of a real wind turbine and master the blade installation process and techniques.

[0048] Pitch angle adjustment training: Use the pitch sensor to master the pitch angle adjustment to ensure that the blade angle is in the correct position.

[0049] Pitch bearing installation training: Use correct tools to install and adjust pitch bearings, and master the installation and adjustment process and methods of pitch bearings.

[0050] Installation training of electric variable pitch drive device: Use correct tools to assemble and adjust the variable pitch drive device model, and master the installation and adjustment process and methods of the variable pitch drive gear.

[0051] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A wind turbine pitch system miniaturized installation and adjustment training system, including a pitch actuator, characterized in that: The pitch actuator includes a training platform, a blade model, a pitch bearing, an electric pitch drive device model, a pitch sensor, a control panel, a pitch lubrication system, an operating table and auxiliary tools; The training platform is used for the installation and placement of hardware; the blade model is made of nylon and is used to simulate the root structure of the wind turbine blade. The blade model is connected to the pitch bearing; the pitch bearing adopts an inner gear ring single-row ball bearing with an inner diameter of 710 mm; the electric pitch drive device model adopts a set of motor and reducer drive devices, and the pitch rate is ≤8° / s; the pitch sensor includes an encoder and a limit switch for safe shutdown and emergency shutdown. The trigger angles of the pitch sensor to stop the pitch are 91°, 95° and -5° respectively, and the pitch stop is triggered by a wear-resistant metal collision block; the pitch lubrication system is used for the lubrication of the pitch bearing ball and tooth surface; a shock-absorbing rubber pad is laid on the operating table, and parts and tooling are placed on the table; the auxiliary tools are used to provide auxiliary equipment and tools required for the pitch system training, including but not limited to mobile parts racks, small cranes and slings, and disassembly and assembly tools.

2. According to claim 1, a wind turbine pitch system miniaturized installation and adjustment training system is characterized by: It also includes a control system, which includes a pitch control logic module, a normal pitch and emergency pitch module, a fault self-diagnosis and protection module, a monitoring module and a training equipment data sharing and expansion module.

3. According to claim 2, a wind turbine pitch system miniaturized installation and adjustment training system is characterized by: The pitch control logic module is used to follow the pitch control system state switching logic, and the normal pitch and emergency pitch modules are used to control the pitch angle during the pitch process.

4. According to claim 2, a wind turbine pitch system miniaturized installation and adjustment training system is characterized by: The normal pitch and emergency pitch module includes an automatic pitch unit, a manual pitch unit and a safe pitch unit. The fault self-diagnosis and protection module is used to monitor its own status in real time and detect faults or abnormal conditions, and then take corresponding protection measures.

5. According to claim 2, a wind turbine pitch system miniaturized installation and adjustment training system is characterized by: The monitoring module is used to monitor the real-time data of the variable pitch system and view the real-time fault codes, and can perform fault troubleshooting and repair training based on the simulated fault codes.

6. According to claim 2, a wind turbine pitch system miniaturized installation and adjustment training system is characterized by: The training equipment data sharing expansion module is interconnected with each module, so that the equipment can run training independently and realize smooth and efficient information exchange and collaborative work between each device; through the training equipment data sharing expansion module, unified data management is realized on the basis of intercommunication between devices, including the display of equipment status information, fault information, and training examination information.

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