CN113669195B - Converter dragging mode-based automatic alignment method and system for wind turbine impeller - Google Patents
Converter dragging mode-based automatic alignment method and system for wind turbine impeller Download PDFInfo
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- CN113669195B CN113669195B CN202110835773.1A CN202110835773A CN113669195B CN 113669195 B CN113669195 B CN 113669195B CN 202110835773 A CN202110835773 A CN 202110835773A CN 113669195 B CN113669195 B CN 113669195B
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- impeller
- rotating speed
- dragging
- generator
- target position
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000012423 maintenance Methods 0.000 claims abstract description 7
- 230000003993 interaction Effects 0.000 claims description 9
- 230000003068 static effect Effects 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 3
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/32—Wind speeds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/327—Rotor or generator speeds
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/328—Blade pitch angle
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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
Abstract
The invention discloses a wind turbine generator impeller automatic alignment method and a system based on a converter dragging mode. The invention realizes accurate positioning of the impeller based on the dragging mode of the converter, mainly adds the dragging mode in the PLC control program of the unit, does not need to add extra hardware on the unit, can realize automatic accurate positioning of the impeller in daily maintenance, and does not influence the safety of the unit.
Description
Technical Field
The invention relates to the technical field of wind turbine generator impeller alignment, in particular to a semi-direct-drive wind turbine generator impeller automatic alignment method and system based on a converter dragging mode.
Background
At present, most of converters of semi-direct-drive wind turbine generators have a dragging function and can achieve the purpose of rotating an anti-dragging impeller, but all the existing anti-dragging systems achieve the anti-dragging function on a hardware level, and the dragging angle cannot be accurately controlled in actual application. In chinese utility model patent CN207500059U, a semi-direct drive wind turbine generator system is disclosed, which is built by using an anti-dragging frequency converter driving cabinet, a diesel generator and a master controller. The diesel generator of the system is connected with the input end of the frequency converter through the circuit breaker, the output end of the frequency converter is connected with the generator switching cabinet of the wind turbine generator through the alternating current output reactor, and the impeller of the wind turbine generator is reversely dragged through the frequency converter.
The system realizes the anti-dragging function through hardware, can meet the requirements of hoisting and transportation, but cannot be continuously used after the subsequent unit is debugged and stably runs. Especially, in the case that the position of the impeller needs to be accurately fixed in the routine maintenance of the unit, the system has insufficient precision control on the position.
In a word, the existing anti-dragging systems are all built by using hardware, and can be dragged before the semi-direct-drive wind turbine generator is connected to the grid and stably runs, so that the anti-dragging systems are not suitable for being used after the generator set is debugged and put into use. The existing anti-dragging system can only accurately control the speed, but cannot accurately position the position of the impeller.
Disclosure of Invention
The invention aims to overcome the defects and shortcomings of the prior art and provides an automatic alignment method for a semi-direct-drive wind turbine generator system impeller based on a converter dragging mode.
The invention also provides a semi-direct-drive wind turbine generator impeller automatic alignment system based on the converter dragging mode.
The first purpose of the invention is realized by the following technical scheme: the method is characterized in that a dragging mode is added in an original main control program of a unit, the dragging mode is realized by programming in a PLC (programmable logic controller) of the unit, the converter of the unit comprises the dragging mode, automatic alignment is started after the target position of an impeller is input in a man-machine interaction interface of the unit, and main shaft braking is automatically carried out after the alignment is finished, wherein the specific conditions are as follows:
the method comprises the steps of calculating a set rotating speed value of a generator in a dragging mode through the deviation of the actual position of an impeller and a target position, adopting segmented speed control, when a deviation value is large, correspondingly increasing the set rotating speed value of the generator in order to quickly reach the target position, when the deviation value is small, correspondingly decreasing the set rotating speed value in order to improve the control precision, when the deviation value is smaller than a preset threshold value, setting the rotating speed value to be 0, enabling the impeller to be static, if the impeller cannot be accurately aligned once, continuing to control the generator to drag reversely by a program, trying again until the position can be aligned, and braking a main shaft.
Further, the unit inputs the target position of the impeller through a man-machine interaction interface of the main control of a unit tower footing cabinet in a maintenance mode, then the unit enters a dragging mode through an interface button, at the moment, the unit is controlled to receive the impeller to a preset angle through a corresponding program, then whether the current wind speed is less than a set wind speed, whether the rotating speed of the generator is less than a set rotating speed, whether the angle of the blade reaches the target position and whether the main shaft brake is in a loosening state are judged, if the conditions are not met, the dragging mode exits, if the conditions are met, the unit is controlled to close a machine side circuit breaker and a network side circuit breaker of the converter, the set value of the rotating speed of the generator calculated according to the actual position of the impeller and the target position is issued to the converter, wherein the rotating speed of the generator adopts a segmented speed control mode, and the specific operation is as follows: when the difference between the impeller position and the target position is larger than beta 1, the rotating speed of the generator is set to be w 1; when the impeller position is different from the target position by beta 1 to beta 2, the generator speed is set to be w 2; when the difference between the impeller position and the target position is between beta 2 and beta 3, the rotating speed of the generator is set to be w 3; when the impeller position is about to reach a target position, namely the difference is less than beta 3, the set value of the rotating speed of the program-controlled generator is 0rpm, the delay time t1 triggers a main shaft braking system of the unit, and meanwhile, the set value of the dragging rotating speed is ensured to be 0rpm all the time, wherein beta 1 is more than beta 2 and more than beta 3, and w1 is more than w2 and more than w 3; and finally, after the brake is finished, finishing the whole automatic alignment process and exiting the dragging mode.
Furthermore, the whole automatic alignment process is carried out under the state that the unit emergency stop button is not triggered, and if any abnormity occurs in the automatic alignment process, dragging can be finished at any time through the dragging button of the human-computer interaction interface or the emergency stop button of the unit.
The second purpose of the invention is realized by the following technical scheme: the system is used for realizing the automatic alignment method of the semi-direct-drive wind turbine generator impeller.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. according to the invention, after the unit is debugged and put into use, the signals are added into the main control program, and based on the dragging mode of the converter, the required related signals are existed in the semi-direct-drive wind turbine generator, so that additional hardware is not required.
2. The invention has higher control precision on the automatic alignment of the impeller, can realize the automatic accurate positioning of the impeller in the daily maintenance, meets the maintenance requirement and does not influence the safety of the unit.
Drawings
FIG. 1 is a flow chart of the present invention for automatic alignment.
Fig. 2 is an example of an interface of the present invention.
Detailed Description
The present invention will be further described with reference to the following specific examples.
The embodiment provides an automatic alignment method of a semi-direct-drive wind turbine generator impeller based on a converter dragging mode, which is realized by adding a dragging mode in an original main control program of a unit and programming in a PLC (programmable logic controller) of the unit, so that the converter of the unit has the dragging mode, then the automatic alignment is started after a target position of the impeller is input in a man-machine interaction interface of the unit, and the main shaft brake is automatically performed after the alignment is finished, wherein a generator rotating speed set value of the dragging mode is calculated through the deviation of the actual position and the target position of the impeller, the segmented speed control is adopted, when a deviation value is large, the rotating speed set value is correspondingly increased for quickly reaching the target position, when the deviation value is small, the rotating speed set value is correspondingly reduced for improving the control precision, the final rotating speed set value is extremely small to meet the precision requirement, and when the deviation reaches a certain small value, the rotating speed set value is 0, at the moment, the impeller is static, if the impeller cannot be accurately aligned once, the program continues to control the impeller to reversely drag the impeller, the process is tried again until the impeller can be aligned to the position, and the main shaft brakes; referring to fig. 1, the specific situation is as follows:
in the maintenance mode, the unit inputs the target position of the impeller through a man-machine interaction interface controlled by a unit tower base cabinet (as shown in fig. 2, the control input added to a certain project main control interface), and then enters a dragging mode through an interface button, at the moment, the unit is controlled to be retracted to 91 degrees through a corresponding program, then judging whether the current wind speed is less than the set wind speed, whether the rotating speed of the generator is less than the set rotating speed, whether the blade angle reaches the target position and whether the main shaft brake is in a loosening state, if the conditions are not met, quitting the dragging mode, if the above conditions are met, controlling the machine set to close the machine side and network side circuit breakers of the converter, the method comprises the following steps of calculating a set value of the rotating speed of the generator according to the actual position and the target position of an impeller, and issuing the set value to a converter, wherein the rotating speed of the generator adopts a segmented speed control mode, and the specific operation is as follows: when the difference between the impeller position and the target position is larger than beta 1, the rotating speed of the generator is set to be w 1; when the impeller position differs from the target position by between β 1 and β 2, the generator speed is set to w 2; when the difference between the impeller position and the target position is between beta 2 and beta 3, the rotating speed of the generator is set to be w 3; when the impeller position is about to reach a target position, namely the difference is less than beta 3, the set value of the rotating speed of the program-controlled generator is 0rpm, the delay time t1 triggers a main shaft braking system of the unit, and meanwhile, the set value of the dragging rotating speed is ensured to be 0rpm all the time, wherein beta 1 is more than beta 2 and more than beta 3, and w1 is more than w2 and more than w 3; and finally, after the brake is finished, finishing the whole automatic alignment process and exiting the dragging mode.
The whole automatic alignment process is carried out under the state that the unit emergency stop button is not triggered, and if any abnormity occurs in the automatic alignment process, the dragging can be finished at any time through a dragging button of a human-computer interaction interface or the emergency stop button of the unit.
The embodiment also provides an automatic alignment system of the semi-direct-drive wind turbine generator impeller based on the converter dragging mode, and the system is used for realizing the automatic alignment method of the semi-direct-drive wind turbine generator impeller.
The above-mentioned embodiments are merely preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, so that the changes in the shape and principle of the present invention should be covered within the protection scope of the present invention.
Claims (3)
1. The automatic alignment method of the semi-direct-drive wind turbine impeller based on the converter dragging mode is characterized by comprising the following steps: the method is characterized in that a dragging mode is added in an original main control program of the unit, the dragging mode is realized by programming in a PLC (programmable logic controller) of the unit, a converter of the unit comprises the dragging mode, automatic alignment is started after a target position of an impeller is input in a human-computer interaction interface of the unit, and main shaft braking is automatically carried out after the alignment is finished, wherein the specific conditions are as follows:
calculating a set value of the rotating speed of the generator in a dragging mode through the deviation of the actual position of the impeller and the target position, adopting segmented speed control, when the deviation value is large, the set value of the rotating speed is correspondingly increased for quickly reaching the target position, when the deviation value is small, the set value of the rotating speed is correspondingly reduced for improving the control precision, when the deviation is smaller than a preset threshold value, the set value of the rotating speed is 0, at the moment, the impeller is static, if the impeller cannot be accurately aligned once, the program continues to control the reverse dragging of the impeller, trying again until the impeller can be aligned with the position, and braking the main shaft;
the method comprises the following steps that a set inputs a target position of an impeller through a man-machine interaction interface of a main control of a tower footing cabinet of the set in a maintenance mode, then the set enters a dragging mode through an interface button, the set is controlled to receive the impeller to a preset angle through a corresponding program, whether the current wind speed is smaller than a set wind speed, whether the rotating speed of a generator is smaller than the set rotating speed, whether the angle of the impeller reaches the target position and whether a main shaft brake is in a loosening state are judged, if the conditions are not met, the dragging mode exits, if the conditions are met, the set is controlled to close a machine side and a network side circuit breaker of a converter, the set value of the rotating speed of the generator calculated according to the actual position of the impeller and the target position is issued to the converter, wherein the rotating speed of the generator adopts a segmented speed control mode, and the specific operation is as follows: when the difference between the impeller position and the target position is larger than beta 1, the rotating speed of the generator is set to be w 1; when the impeller position differs from the target position by between β 1 and β 2, the generator speed is set to w 2; when the difference between the impeller position and the target position is between beta 2 and beta 3, the rotating speed of the generator is set to be w 3; when the impeller position is about to reach a target position, namely the difference is less than beta 3, the set value of the rotating speed of the program-controlled generator is 0rpm, the delay time t1 triggers a main shaft braking system of the unit, and meanwhile, the set value of the dragging rotating speed is ensured to be 0rpm all the time, wherein beta 1 is more than beta 2 and more than beta 3, and w1 is more than w2 and more than w 3; and finally, after the brake is finished, finishing the whole automatic alignment process and exiting the dragging mode.
2. The method for automatically aligning the impeller of the semi-direct-drive wind turbine generator based on the converter dragging mode according to claim 1, wherein the method comprises the following steps: the whole automatic alignment process is carried out under the state that the unit emergency stop button is not triggered, and if any abnormity occurs in the automatic alignment process, the dragging can be finished at any time through the dragging button of the human-computer interaction interface or the emergency stop button of the unit.
3. The system for automatically aligning the impeller of the semi-direct-drive wind turbine generator based on the dragging mode of the converter is characterized by being used for realizing the method for automatically aligning the impeller of the semi-direct-drive wind turbine generator according to any one of claims 1-2.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110835773.1A CN113669195B (en) | 2021-07-23 | 2021-07-23 | Converter dragging mode-based automatic alignment method and system for wind turbine impeller |
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| CN202110835773.1A CN113669195B (en) | 2021-07-23 | 2021-07-23 | Converter dragging mode-based automatic alignment method and system for wind turbine impeller |
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| CN113669195B true CN113669195B (en) | 2022-09-16 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207500059U (en) * | 2017-09-29 | 2018-06-15 | 明阳智慧能源集团股份公司 | A kind of half-direct-drive wind driven generator group is counter to drag system |
| CN108223292A (en) * | 2016-12-09 | 2018-06-29 | 北京金风科创风电设备有限公司 | Wind generating set, barring system thereof, barring control method and device |
| CN111594383A (en) * | 2020-05-29 | 2020-08-28 | 国电联合动力技术有限公司 | Large-megawatt double-fed wind turbine generator set reverse driving method and system |
| CN111669061A (en) * | 2020-05-20 | 2020-09-15 | 浙江大学 | Anti-system of dragging and wind generating set |
| CN111884550A (en) * | 2020-06-15 | 2020-11-03 | 中国船舶重工集团海装风电股份有限公司 | Self-driven wind wheel turning device and method for wind turbine generator |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2268918A2 (en) * | 2007-07-27 | 2011-01-05 | Skybuilt Power | Renewable energy trailer |
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- 2021-07-23 CN CN202110835773.1A patent/CN113669195B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108223292A (en) * | 2016-12-09 | 2018-06-29 | 北京金风科创风电设备有限公司 | Wind generating set, barring system thereof, barring control method and device |
| CN207500059U (en) * | 2017-09-29 | 2018-06-15 | 明阳智慧能源集团股份公司 | A kind of half-direct-drive wind driven generator group is counter to drag system |
| CN111669061A (en) * | 2020-05-20 | 2020-09-15 | 浙江大学 | Anti-system of dragging and wind generating set |
| CN111594383A (en) * | 2020-05-29 | 2020-08-28 | 国电联合动力技术有限公司 | Large-megawatt double-fed wind turbine generator set reverse driving method and system |
| CN111884550A (en) * | 2020-06-15 | 2020-11-03 | 中国船舶重工集团海装风电股份有限公司 | Self-driven wind wheel turning device and method for wind turbine generator |
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