CN116517767A - Method and device for reducing yaw starting impact of wind turbine generator - Google Patents
Method and device for reducing yaw starting impact of wind turbine generator Download PDFInfo
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- CN116517767A CN116517767A CN202310331111.XA CN202310331111A CN116517767A CN 116517767 A CN116517767 A CN 116517767A CN 202310331111 A CN202310331111 A CN 202310331111A CN 116517767 A CN116517767 A CN 116517767A
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- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000013016 damping Methods 0.000 claims description 24
- 230000035939 shock Effects 0.000 claims description 16
- 230000008030 elimination Effects 0.000 claims description 8
- 238000003379 elimination reaction Methods 0.000 claims description 8
- 238000004891 communication Methods 0.000 claims description 5
- 230000005284 excitation Effects 0.000 claims description 5
- 230000002441 reversible effect Effects 0.000 claims description 5
- 238000004458 analytical method Methods 0.000 claims description 4
- 210000003781 tooth socket Anatomy 0.000 claims description 3
- 230000002829 reductive effect Effects 0.000 abstract description 7
- 238000010248 power generation Methods 0.000 abstract description 3
- 238000004590 computer program Methods 0.000 description 11
- 230000006870 function Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 239000003638 chemical reducing agent Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
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- 230000008859 change Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
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- 238000012986 modification Methods 0.000 description 2
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- 239000004973 liquid crystal related substance Substances 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0204—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for orientation in relation to wind direction
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D15/00—Transmission of mechanical power
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0296—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor to prevent, counteract or reduce noise emissions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
- F03D9/25—Wind motors characterised by the driven apparatus the apparatus being an electrical generator
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Wind Motors (AREA)
Abstract
The application relates to the technical field of new energy power generation, in particular to a method and a device for reducing yaw starting impact of a wind turbine generator, and the method is applicable to a yaw system, wherein the yaw system comprises a cabin, a gear ring and a pinion which are meshed with each other, and a yaw motor for driving the pinion to rotate, the yaw motor can drive the pinion to drive the whole cabin to rotate along the gear ring, and the method comprises the following steps: acquiring a cabin wind deviation value and judging whether the cabin wind deviation value is larger than a threshold value or not; if yes, the direction to be rotated of the engine room is obtained; determining a side to be abutted of the pinion based on a direction to be rotated of the nacelle; judging whether a tooth gap exists between the side to be abutted of the pinion and the side wall of the tooth groove of the gear ring; if yes, executing the backlash eliminating operation; and after the backlash is eliminated, performing yaw operation. By adopting the method, the impact on the yaw bearing caused by sudden start can be avoided, the starting noise can be eliminated, the shutdown fault of the fan caused by excessive vibration can be reduced, and the running stability of the unit can be improved.
Description
Technical Field
The application relates to the technical field of new energy power generation, in particular to a method for reducing yaw starting impact of a wind turbine, a device for reducing yaw starting impact of the wind turbine, a machine-readable storage medium and a processor.
Background
The yaw system is one of subsystems of the wind generating set, and the yaw motor drives the yaw bearing large gear ring to rotate through the coaxially connected speed reduction gear box so that the impeller faces wind. Gaps are reserved between the meshing of the yaw bearing large gear and the yaw speed reducer small gear, and the yaw system can do bidirectional rotary motion, so that a certain idle stroke exists on the speed reducing teeth when the yaw is started, and meshing impact and noise are generated. And the hydraulic brake provides fixed damping when started, and can not be automatically adjusted when external load changes, so that vibration is easy to stop.
At present, when the unit is designed and installed, the gap between a yaw bearing large gear and a yaw speed reducer pinion is reduced as much as possible, and a control strategy of voltage reduction starting is adopted to start a yaw motor, so that the impact on a yaw bearing during starting is reduced. But the backlash can only be reduced in a reasonable range, the yaw system of the wind turbine generator is a high inertia specific load, and the step-down starting has great impact on a yaw bearing.
Disclosure of Invention
An object of an embodiment of the application is to provide a method for reducing yaw start impact of a wind turbine, a device for reducing yaw start impact of a wind turbine, a machine-readable storage medium and a processor.
To achieve the above object, a first aspect of the present application provides a method for reducing yaw start shock of a wind turbine, applicable to a yaw system, the yaw system including a nacelle, a ring gear and a pinion engaged with each other, and a yaw motor for driving the pinion to rotate, the yaw motor being capable of driving the pinion to drive the entire nacelle to rotate along the ring gear, the method comprising: acquiring a cabin wind deviation value and judging whether the cabin wind deviation value is larger than a threshold value or not; if yes, the direction to be rotated of the engine room is obtained; determining a side to be abutted of the pinion based on a direction to be rotated of the nacelle; the side to be abutted of the pinion is one side where gear teeth of the pinion are abutted with the side wall of a tooth groove of the gear ring when the pinion drives the whole cabin to rotate in the direction to be rotated; judging whether a tooth gap exists between the side to be abutted of the pinion and the side wall of the tooth groove of the gear ring; if yes, executing the backlash eliminating operation; and after the backlash is eliminated, performing yaw operation.
Based on the first aspect, in some embodiments of the present application, the yaw system further includes: yaw frequency converter for driving yaw motor variable speed operation and electromagnetic braking device for braking yaw motor, eliminate the backlash operation, include: opening an electromagnetic brake device to release the braking state of the yaw motor; and enabling the yaw frequency converter to drive the yaw motor to rotate at a low speed in the direction to be rotated at a preset power supply frequency until no tooth gap exists between the side to be abutted of the pinion and the side wall of the tooth groove of the gear ring.
Based on the first aspect, in some embodiments of the present application, the pinion is a plurality of, and a plurality of pinion is driven by a plurality of yaw motors respectively, pinion and yaw motor one-to-one, before performing yaw operation, still include: the gear teeth of a pinion driven by the damping motor are abutted with the tooth socket resistance surface of the gear ring, and the damping motor is enabled to output rated torque with a first preset proportion; the damping motor represents a yaw motor receiving reverse excitation, and the tooth space resistance surface represents a side wall surface in a tooth space far away from the to-be-abutted side.
Based on the first aspect, in some embodiments of the present application, the gear teeth of the pinion driven by the damping motor are abutted with the tooth space resistance surface of the ring gear, before comprising: the number of damping motors is determined in dependence of the actual load.
Based on the first aspect, in some embodiments of the present application, when the damping motors are plural, the plural damping motors are uniformly disposed along the circumferential direction of the ring gear.
Based on the first aspect, in some embodiments of the present application, determining whether a backlash exists between a side to be abutted of the pinion and a tooth slot side wall of the ring gear includes: detecting whether the output torque of the yaw motor reaches a second preset proportion rated torque or not; if so, the condition that no tooth gap exists between the side to be abutted of the pinion and the side wall of the tooth groove of the gear ring is indicated, and if not, the tooth gap exists.
In a second aspect, the present application provides a device for reducing yaw start shock of a wind turbine, suitable for a yaw system, the yaw system including a nacelle, a ring gear and a pinion engaged with each other, and a yaw motor for driving the pinion to rotate, the yaw motor being configured to drive the pinion to drive the entire nacelle to rotate along the ring gear, the device comprising: the acquisition module is used for acquiring the cabin opposite wind deviation value and judging whether the cabin opposite wind deviation value is larger than a threshold value, and when the cabin opposite wind deviation value is larger than the threshold value, the acquisition module is also used for acquiring the direction to be rotated of the cabin; an analysis module for determining a side of the pinion to be abutted based on a direction of rotation of the nacelle; the side to be abutted of the pinion is one side where gear teeth of the pinion are abutted with the side wall of a tooth groove of the gear ring when the pinion drives the whole cabin to rotate in the direction to be rotated; the judging module is used for judging whether a tooth gap exists between the side to be abutted of the pinion and the side wall of the tooth groove of the gear ring; the first execution module is used for executing the backlash elimination operation when the judgment module judges that the backlash exists; and the second execution module is used for executing yaw operation after the first execution module executes the backlash elimination operation.
Based on the second aspect, in some embodiments of the present application, the yaw system further includes: the first execution module eliminates backlash by performing the following operations: opening an electromagnetic brake device to release the braking state of the yaw motor; and enabling the yaw frequency converter to drive the yaw motor to rotate at a low speed in the direction to be rotated at a preset power supply frequency until no tooth gap exists between the side to be abutted of the pinion and the side wall of the tooth groove of the gear ring.
In a third aspect, the present application provides a processor configured to perform the above method of reducing yaw start up shocks of a wind turbine.
In a fourth aspect, the present application provides a machine-readable storage medium having stored thereon instructions that, when executed by a processor, cause the processor to be configured to perform the above-described method of reducing yaw start shock for a wind turbine.
The control flow for eliminating the gear clearance is added in the yaw control strategy, so that the clearance between the yaw bearing large gear and the yaw reducer small gear is eliminated before yaw is started. When yaw starts, the impact to the yaw bearing caused by sudden start is avoided to damage the bearing gear, the unit vibrates, and starting noise is eliminated. The shutdown fault that fan vibrations are excessive is reduced, the stability of unit operation is increased. Meanwhile, the load requirement of the yaw bearing is reduced in design, and the unit cost is reduced. Each yaw motor is independently controlled by an inverter, driving and damping torque is dynamically adjusted according to load, yaw stability is maintained, and stable operation of the unit is ensured.
Additional features and advantages of embodiments of the present application will be set forth in the detailed description that follows.
Drawings
The accompanying drawings are included to provide a further understanding of embodiments of the present application and are incorporated in and constitute a part of this specification, illustrate embodiments of the present application and together with the description serve to explain, without limitation, the embodiments of the present application. In the drawings:
FIG. 1 schematically illustrates an application environment schematic diagram of a method for reducing yaw start shock of a wind turbine according to an embodiment of the present application;
FIG. 2 schematically illustrates a flowchart of a method for reducing yaw start shock of a wind turbine according to an embodiment of the present application;
FIG. 3 schematically illustrates a partial schematic view of a pinion gear and ring gear meshing portion of an embodiment of the present application;
FIG. 4 schematically illustrates a simplified electrical schematic of a yaw system according to an embodiment of the present application;
fig. 5 schematically shows an internal structural diagram of a computer device according to an embodiment of the present application.
Description of the reference numerals
102-terminal; 104-a server; a01-a processor; a02-a network interface; a03-an internal memory; a04-a display screen; a05-an input device; a06—a nonvolatile storage medium; b01-operating system; b02-a computer program; 1-a pinion gear; 11-side to be abutted; 2-a gear ring; 21-resistance surface.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it should be understood that the specific implementations described herein are only for illustrating and explaining the embodiments of the present application, and are not intended to limit the embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present application based on the embodiments herein.
It should be noted that, in the embodiment of the present application, directional indications (such as up, down, left, right, front, and rear) are referred to, and the directional indications are merely used to explain the relative positional relationship, movement conditions, and the like between the components in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indications are correspondingly changed.
In addition, if there is a description of "first", "second", etc. in the embodiments of the present application, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be regarded as not exist and not within the protection scope of the present application.
Example 1
The method for reducing yaw starting impact of the wind turbine generator can be applied to an application environment shown in fig. 1. Wherein the terminal 102 communicates with the server 104 via a network. The terminal 102 may be, but not limited to, various personal computers, notebook computers, smartphones, tablet computers, and portable wearable devices, and the server 104 may be implemented by a stand-alone server or a server cluster composed of a plurality of servers.
The method for reducing yaw starting impact of the wind turbine generator provided by the embodiment is suitable for a yaw system, the yaw system comprises a cabin, a gear ring 2 and a pinion 1 which are meshed with each other, and a yaw motor for driving the pinion 1 to rotate, the yaw motor can drive the pinion 1 to drive the whole cabin to rotate along the gear ring 2, and the method comprises the following steps (refer to fig. 2):
s1, acquiring a cabin opposite wind deviation value and judging whether the cabin opposite wind deviation value is larger than a threshold value or not;
if yes, the direction to be rotated of the engine room is obtained;
specifically, the existing yaw system has a wind direction detection function and a yaw start judging function, and details are not described in this embodiment. When the deviation of the nacelle from the wind reaches the threshold value of yaw start, the direction to be rotated of the nacelle is obtained (only rotation on the horizontal plane is discussed in the embodiment), specifically, in the embodiment, the direction to be rotated of the nacelle includes two cases of clockwise and anticlockwise, and the impeller can be rotated to the wind direction in both the clockwise and anticlockwise directions, so that the rotation of the impeller to the wind direction with the minimum rotation angle is the target in the embodiment, and the direction to be rotated of the nacelle is determined (if the impeller needs to be rotated 180 degrees to be driven to the wind, the impeller is rotated clockwise or anticlockwise optionally one of the two cases); when the wind deviation of the nacelle does not reach the yaw start threshold, the current orientation of the impeller is maintained, and the yaw operation is not performed.
S2, determining a side 11 to be abutted of the pinion 1 based on a direction to be rotated of the nacelle; the side 11 to be abutted against of the pinion 1 represents one side where the gear teeth of the pinion 1 are abutted against the side wall of the tooth slot of the gear ring 2 when the pinion 1 drives the whole cabin to rotate in the direction to be rotated;
referring to fig. 3, when the pinion 1 rotates in the direction indicated by the arrow in the figure, the side 11 to be abutted is shown.
S3, judging whether a tooth gap exists between the side 11 to be abutted of the pinion 1 and the side wall of the tooth groove of the gear ring 2;
s3, if yes, executing the backlash eliminating operation, and if not, directly executing the yaw operation;
s4, after the backlash is eliminated, yaw operation is executed.
Further, the yaw system further includes: yaw frequency converter for driving yaw motor variable speed operation and electromagnetic braking device for braking yaw motor, eliminate the backlash operation, include: opening an electromagnetic brake device to release the braking state of the yaw motor; and enabling the yaw frequency converter to drive the yaw motor to rotate at a low speed in the direction to be rotated at a preset power supply frequency until no tooth gap exists between the side 11 to be abutted of the pinion 1 and the tooth socket side wall of the gear ring 2. For example, if the preset power supply frequency may be 5Hz, the rotation speed of the yaw motor in the backlash eliminating stage is eliminated: n=60 f/p=60×5/2=150r/m, f is the supply frequency, and p is the pole pair number of the motor.
Preferably, the method for judging whether the backlash exists comprises the following steps:
detecting whether the output torque of the yaw motor reaches a second preset proportion rated torque or not;
if so, it means that there is no backlash between the side 11 to be abutted of the pinion 1 and the side wall of the tooth slot of the ring gear 2, otherwise, there is backlash.
For example, if the rated torque is 14.9N, the second preset ratio may be 50%, and the output torque of the yaw motor is: t power = 50% T N =50% ×14.9=7.45 n·m, where T N Indicating the rated torque.
Preferably, in this embodiment, the yaw system further includes a hydraulic brake device. In this embodiment, the yaw brake function is performed by two sets of the electromagnetic brake device and the hydraulic brake device. The outer ring of the yaw bearing is a gear ring 2, and the brake disc and the outer ring of the yaw bearing are fixedly connected with the tower; the yaw bearing inner race is connected with the cabin base, and yaw brake installs in the base below, and yaw reduction gear installs in the base top, drives ring gear 2 and realizes yaw function. The hydraulic brake device clamps the brake disc for braking; the electromagnetic braking device realizes the braking of the yaw reducer pinion 1 by locking the motor shaft. While it is necessary to release both the electromagnetic brake and the hydraulic brake simultaneously before performing the yaw operation, the nacelle may be unstable at the moment when the brake is released because the yaw motor outputs torque to the pinion 1.
Specifically, pinion 1 is a plurality of, and is a plurality of pinion 1 is driven by a plurality of yaw motors respectively, pinion 1 and yaw motor one-to-one, before the execution yaw operation, this application adopts following operation mode for guaranteeing the stability in cabin when loosening hydraulic brake:
the gear teeth of the pinion 1 driven by the damping motor are abutted with the tooth space resistance surface 21 of the gear ring 2, and the damping motor is enabled to output rated torque with a first preset proportion; the damping motor represents a yaw motor receiving reverse excitation, and the tooth space resistance surface 21 represents a side wall surface in the tooth space away from the side to be abutted 11. For example, referring to fig. 3, the resistive surface 21 is shown when the pinion 1 is rotated in the direction indicated by the arrow in the figure. Exemplary, if the rated torque is 14.9N, the first presetThe ratio may be-30% when the output torque of the yaw motor is: t power = -30% T N -30% ×14.9 = -4.47n·m, where T N Indicating the rated torque.
Further, in this embodiment, the yaw motor may be used as both a drive motor and a damper motor. The driving motor and the damping motor can be mutually converted according to actual load (such as wind force), when yaw power is insufficient, the damping motor can be controlled to be converted into the driving motor, wind force is unstable, and when load change is fast, the damping motor is put into more. The driving force and the resistance of the whole system are dynamic stable values, and the driving motor and the damping motor are switched in pairs along the circumferential direction of the yaw bearing, so that the unit is ensured to stabilize yaw.
Preferably, in order to simplify the operation steps, before the step of eliminating the backlash (step S3), it is unnecessary to determine in advance whether there is a backlash between the side 11 to be abutted against of the pinion 1 and the tooth space of the ring gear 2, but the operation of eliminating the backlash is directly performed after the step S2, and after the operation is completed, it is determined whether there is a backlash between the side 11 to be abutted against of the pinion 1 and the tooth space of the ring gear 2. Therefore, the flow can be simplified, and the detection efficiency is improved.
Exemplary, the electrical schematic of the yaw system of the present application is shown in FIG. 4, the system workflow comprising:
when the wind deviation of the cabin reaches a yaw starting threshold value, a main control system (a main control PLC in fig. 4) sends out the requirements of the rotation direction and the angle of the cabin through CAN communication, and simultaneously issues a backlash eliminating instruction to a yaw control cabinet PLC (the yaw PLC in fig. 4), and the yaw PLC is connected with a rectification inversion unit through CAN communication to control a yaw motor (comprising a driving motor and a damping motor).
The yaw control cabinet receives the master control backlash eliminating instruction, controls the electromagnetic brake of the yaw motor to be opened through the Do module of the master control PLC, and detects the electromagnetic brake state of the yaw motor through the feedback signal of the auxiliary contact of the contactor.
After receiving electromagnetic brake opening feedback, a DI module of the master control PLC controls a yaw frequency converter to drive each yaw motor to rotate to a cabin required by the master control, at the moment, the frequency converter inverts 5HZ alternating current to drive the yaw motor at low frequency, so that a yaw bearing large gear and a yaw speed reducer pinion 1 are meshed in advance, gaps between teeth are eliminated, the frequency converter adopts a torque control mode, and the output torque of each motor is controlled to be 50% of rated torque.
Meanwhile, reverse excitation is provided for part of motors according to load conditions, and the reverse excitation is opposite to the steering of the driving motors, so that driving teeth of corresponding reduction gear boxes are close to a resistance surface 21 of a yaw bearing, and rated torque of-30% is output, so that the stability of a cabin when hydraulic braking is released is ensured.
When the frequency converter detects that the output torque of the driving motor reaches 50% of rated torque and the output torque of the damping motor reaches-30% of rated torque, the damping motor feeds back to the yaw cabinet PLC, and the backlash is judged to be eliminated, and at the moment, the yaw system is braked by a hydraulic brake.
The yaw cabinet feeds back a backlash elimination completion signal to the main control system through CAN communication, after the main control system receives the feedback, the yaw hydraulic brake is opened, a yaw enabling signal is issued, the output torque of each yaw motor is increased on the basis of 50% of rated torque, the output torque is adjusted according to the load, the damping motor is controlled to work in a power generation state, and variable resistance is provided according to the load change.
In fig. 4, the components F1 and F2 are circuit breakers.
Example 2
The application provides a reduce wind turbine generator system yaw and start device that strikes is applicable to yaw system, yaw system includes cabin, intermeshing's ring gear and pinion, and is used for the drive pinion pivoted yaw motor, yaw motor drivable pinion drives whole cabin edge the ring gear rotates, the device includes: the acquisition module is used for acquiring the cabin opposite wind deviation value and judging whether the cabin opposite wind deviation value is larger than a threshold value, and when the cabin opposite wind deviation value is larger than the threshold value, the acquisition module is also used for acquiring the direction to be rotated of the cabin; an analysis module for determining a side of the pinion to be abutted based on a direction of rotation of the nacelle; the side to be abutted of the pinion is one side where gear teeth of the pinion are abutted with the side wall of a tooth groove of the gear ring when the pinion drives the whole cabin to rotate in the direction to be rotated; the judging module is used for judging whether a tooth gap exists between the side to be abutted of the pinion and the side wall of the tooth groove of the gear ring; the first execution module is used for executing the backlash elimination operation when the judgment module judges that the backlash exists; and the second execution module is used for executing yaw operation after the first execution module executes the backlash elimination operation.
Further, the yaw system further includes: the first execution module eliminates backlash by performing the following operations: opening an electromagnetic brake device to release the braking state of the yaw motor; and enabling the yaw frequency converter to drive the yaw motor to rotate at a low speed in the direction to be rotated at a preset power supply frequency until no tooth gap exists between the side to be abutted of the pinion and the side wall of the tooth groove of the gear ring.
The device for reducing the yaw starting impact of the wind turbine generator comprises a processor and a memory, wherein the acquisition module, the analysis module, the judgment module, the first execution module, the second execution module and the like are all stored in the memory as program units, and the processor executes the program modules stored in the memory to realize corresponding functions.
The processor includes a kernel, and the kernel fetches the corresponding program unit from the memory. The kernel can be provided with one or more than one, and the method for reducing yaw starting impact of the wind turbine generator is realized by adjusting kernel parameters.
The memory may include volatile memory, random Access Memory (RAM), and/or nonvolatile memory, such as Read Only Memory (ROM) or flash memory (flash RAM), among other forms in computer readable media, the memory including at least one memory chip.
The embodiment of the application provides a storage medium, and a program is stored on the storage medium, and the program is executed by a processor to realize the method for reducing the yaw starting impact of the wind turbine generator.
In one embodiment, a computer device is provided, which may be a terminal, and the internal structure of which may be as shown in fig. 5. The computer apparatus includes a processor a01, a network interface a02, a display screen a04, an input device a05, and a memory (not shown in the figure) which are connected through a system bus. Wherein the processor a01 of the computer device is adapted to provide computing and control capabilities. The memory of the computer device includes an internal memory a03 and a nonvolatile storage medium a06. The nonvolatile storage medium a06 stores an operating system B01 and a computer program B02. The internal memory a03 provides an environment for the operation of the operating system B01 and the computer program B02 in the nonvolatile storage medium a06. The network interface a02 of the computer device is used for communication with an external terminal through a network connection. The computer program, when executed by the processor a01, implements a method of reducing yaw start shock for a wind turbine. The display screen a04 of the computer device may be a liquid crystal display screen or an electronic ink display screen, and the input device a05 of the computer device may be a touch layer covered on the display screen, or may be a key, a track ball or a touch pad arranged on a casing of the computer device, or may be an external keyboard, a touch pad or a mouse.
It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may 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, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
In one typical configuration, a computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.
The memory may include volatile memory in a computer-readable medium, random Access Memory (RAM) and/or nonvolatile memory, etc., such as Read Only Memory (ROM) or flash RAM. Memory is an example of a computer-readable medium.
Computer-readable media include both permanent and non-permanent, removable and non-removable media, and information storage may be implemented by any method or technology. The information may be computer readable instructions, data structures, modules of a program, or other data. Examples of storage media for a computer include, but are not limited to, phase change memory (PRAM), static Random Access Memory (SRAM), dynamic Random Access Memory (DRAM), other types of Random Access Memory (RAM), read Only Memory (ROM), electrically Erasable Programmable Read Only Memory (EEPROM), flash memory or other memory technology, compact disc read only memory (CD-ROM), digital Versatile Discs (DVD) or other optical storage, magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices, or any other non-transmission medium, which can be used to store information that can be accessed by a computing device. Computer-readable media, as defined herein, does not include transitory computer-readable media (transmission media), such as modulated data signals and carrier waves.
It should also be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises an element.
The foregoing is merely exemplary of the present application and is not intended to limit the present application. Various modifications and changes may be made to the present application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
Claims (10)
1. A method of reducing yaw start-up shock of a wind turbine, the method being adapted for use with a yaw system including a nacelle, intermeshing ring gear and pinion, and a yaw motor for driving rotation of the pinion, the yaw motor driving the pinion to rotate the entire nacelle along the ring gear, the method comprising:
acquiring a cabin wind deviation value and judging whether the cabin wind deviation value is larger than a threshold value or not;
if yes, the direction to be rotated of the engine room is obtained;
determining a side to be abutted of the pinion based on a direction to be rotated of the nacelle; the side to be abutted of the pinion is the side where gear teeth of the pinion are abutted with the side wall of the tooth groove of the gear ring when the pinion drives the whole cabin to rotate towards the direction to be rotated;
judging whether a tooth gap exists between the side to be abutted of the pinion and the side wall of the tooth groove of the gear ring;
if yes, executing the backlash eliminating operation;
and after the backlash is eliminated, performing yaw operation.
2. The method of reducing wind turbine yaw start shocks of claim 1, wherein the yaw system further includes a yaw transducer for driving the yaw motor to operate at a variable speed and an electromagnetic brake for braking the yaw motor; the backlash elimination operation includes:
opening an electromagnetic brake device to release the braking state of the yaw motor;
and enabling the yaw frequency converter to drive the yaw motor to rotate at a low speed in the direction to be rotated at a preset power supply frequency until no tooth gap exists between the side to be abutted of the pinion and the side wall of the tooth groove of the gear ring.
3. The method for reducing yaw start shock of a wind turbine according to claim 2, wherein a plurality of pinions are provided, the plurality of pinions are driven by a plurality of yaw motors, and the pinions are in one-to-one correspondence with the yaw motors; before the yaw operation is performed, the method further comprises:
the gear teeth of the pinion driven by the damping motor are abutted with the tooth socket resistance surface of the gear ring, and the damping is realized
The motor outputs rated torque of a first preset proportion;
the damping motor is a yaw motor for receiving reverse excitation, and the tooth space resistance surface is a side wall surface in a tooth space, which is far away from the side to be abutted.
4. A method of reducing wind turbine yaw start shock according to claim 3, further comprising, prior to the gear teeth of the drive pinion of the damper motor abutting the tooth space drag surface of the ring gear:
the number of damping motors is determined in dependence of the actual load.
5. A method of reducing wind turbine yaw start shocks according to claim 3, wherein when the number of damper motors is plural, the plural damper motors are uniformly arranged along the circumferential direction of the ring gear.
6. The method of reducing yaw start shock of a wind turbine according to claim 2, wherein determining whether a backlash exists between a side to be abutted of the pinion and a tooth slot side wall of the ring gear comprises:
detecting whether the output torque of the yaw motor reaches a second preset proportion rated torque or not;
if so, the condition that no tooth gap exists between the side to be abutted of the pinion and the side wall of the tooth groove of the gear ring is indicated, and if not, the tooth gap exists.
7. The utility model provides a reduce wind turbine generator system yaw and start device that strikes is applicable to yaw system, yaw system includes cabin, intermeshing's ring gear and pinion, and is used for driving pinion pivoted yaw motor, yaw motor can drive the pinion and drive whole cabin edge the ring gear rotates, a serial communication port, the device includes:
the acquisition module is used for acquiring the cabin opposite wind deviation value and judging whether the cabin opposite wind deviation value is larger than a threshold value or not, and also used for acquiring the direction to be rotated of the cabin when the cabin opposite wind deviation value is larger than the threshold value;
an analysis module for determining a side of the pinion to be abutted based on a direction of rotation of the nacelle; the side to be abutted of the pinion is the side where gear teeth of the pinion are abutted with the side wall of the tooth groove of the gear ring when the pinion drives the whole cabin to rotate towards the direction to be rotated;
the judging module is used for judging whether a tooth gap exists between the side to be abutted of the pinion and the side wall of the tooth groove of the gear ring;
the first execution module is used for executing backlash elimination operation when a gap exists between the side to be abutted of the pinion and the side wall of the tooth slot of the gear ring;
and the second execution module is used for executing yaw operation after the first execution module executes the backlash elimination operation.
8. The apparatus for reducing wind turbine yaw start shock of claim 5, wherein the yaw system further comprises: the first execution module eliminates backlash by performing the following operations:
opening an electromagnetic brake device to release the braking state of the yaw motor;
and enabling the yaw frequency converter to drive the yaw motor to rotate at a low speed in the direction to be rotated at a preset power supply frequency until no tooth gap exists between the side to be abutted of the pinion and the side wall of the tooth groove of the gear ring.
9. A processor configured to perform the method of reducing wind turbine yaw start shock of any one of claims 1 to 6.
10. A machine-readable storage medium having instructions stored thereon, which when executed by a processor, cause the processor to be configured to perform the method of reducing wind turbine yaw start up shocks according to any of claims 1 to 6.
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| CN202310331111.XA CN116517767A (en) | 2023-03-30 | 2023-03-30 | Method and device for reducing yaw starting impact of wind turbine generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117072375A (en) * | 2023-10-13 | 2023-11-17 | 华电电力科学研究院有限公司 | Wind turbine generator system, yaw starting device based on electromagnetic excitation and starting method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117072375A (en) * | 2023-10-13 | 2023-11-17 | 华电电力科学研究院有限公司 | Wind turbine generator system, yaw starting device based on electromagnetic excitation and starting method |
| CN117072375B (en) * | 2023-10-13 | 2024-01-09 | 华电电力科学研究院有限公司 | Wind turbine generator system, yaw starting device based on electromagnetic excitation and starting method |
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