CN107701368A - A kind of blade feathering method of Wind turbines - Google Patents
A kind of blade feathering method of Wind turbines Download PDFInfo
- Publication number
- CN107701368A CN107701368A CN201710797791.9A CN201710797791A CN107701368A CN 107701368 A CN107701368 A CN 107701368A CN 201710797791 A CN201710797791 A CN 201710797791A CN 107701368 A CN107701368 A CN 107701368A
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- feathering
- mode
- wind speed
- pitch rate
- wind turbines
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- 238000000034 method Methods 0.000 title claims abstract description 24
- 230000011218 segmentation Effects 0.000 claims description 3
- 230000035939 shock Effects 0.000 abstract description 6
- 238000012544 monitoring process Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
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
-
- 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
-
- 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
-
- 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 kind of blade feathering method of Wind turbines, and according to the mean wind speed at least two feathering modes of selection during shutdown feathering, the pitch rate between at least two featherings mode is different.Corresponding pitch rate is high when corresponding pitch rate is higher than mean wind speed when mean wind speed when shutting down feathering is relatively low.More excellent to use two kinds of feathering modes, the pitch rate of the first feathering mode is high compared with the pitch rate of second of feathering mode, if mean wind speed when shutting down feathering is less than preset value, using the first feathering mode；If mean wind speed when shutting down feathering is more than or equal to preset value, using second of feathering mode feathering.The present invention uses different feathering modes according to wind speed different when shutting down; and wind speed it is relatively low when use big pitch rate; small pitch rate is used when wind speed is higher; relative to existing feathering mode; it can ensure that the steady feathering of Wind turbines is shut down; shock loading during shutdown is effectively reduced, reduces the probability that Wind turbines are damaged.
Description
Technical field
The present invention relates to wind power generation unit blade feathering technical field, more particularly to a kind of blade feathering side of Wind turbines
Method.
Background technology
Control system of wind turbines includes master control system and monitoring system.There is rough ambient environmental or Wind turbines hair
, it is necessary to be shut down by monitoring system feathering during raw failure, the monitoring system of optimization can ensure wind power generating set severe outer
Steady feathering is shut down under portion's environment or malfunction, reduces shock loading when shutting down, and reduces the probability that Wind turbines are damaged.
At present, Wind turbines monitoring system can be stopped according to different fault levels using different feathering mode featherings
Machine, these feathering modes include：Require to calculate feathering speed feathering, constant rate of speed feathering according to rotating speed, set two according to the time
Duan Butong feathering speed featherings, these feathering modes be all according to blower fan unit state in which determine how feathering, do not examine
How consider reduces load during feathering, avoids producing destruction machine when rough ambient environmental or Wind turbines break down
The load of group.As the continuous increase of Wind turbines wind wheel, the continuous of tower increase and based on reduction cost needs proposition
Miniaturized structure, light-weighted requirement, the situation for occurring breaking load in above-mentioned two situations substantially increase, existing shutdown
The demand that feathering control mode, which is not well positioned to meet, to be reduced load, steadily shut down, it is therefore desirable to shut down in optimization control system
Feathering control mode.
The present invention is exactly to found a kind of blade feathering method of new Wind turbines on this basis, makes it for severe
Meet the feathering demand for reducing load, steadily shutting down when external environment condition or Wind turbines break down, turning into current industry pole needs
Improved target.
The content of the invention
The technical problem to be solved in the present invention is to provide a kind of blade feathering method of Wind turbines, it is directed to severe
Meet the feathering demand for reducing load, steadily shutting down when external environment condition or Wind turbines break down, so as to overcome existing wind
The deficiency of group of motors blade feathering method.
In order to solve the above technical problems, the present invention provides a kind of blade feathering method of Wind turbines, the blade feathering
Method is：At least two feathering modes are selected according to mean wind speed when shutting down feathering, between at least two featherings mode
Pitch rate it is different.
As a modification of the present invention, corresponding pitch rate compares average wind when mean wind speed when shutting down feathering is relatively low
Corresponding pitch rate will height when speed is higher.
Further to improve, the blade feathering method includes the first feathering mode and second of feathering mode, and described the
A kind of pitch rate of the pitch rate of feathering mode second of feathering mode is high, if mean wind speed when shutting down feathering
During less than preset value, using the first described feathering mode feathering；If mean wind speed when shutting down feathering is more than or equal to preset value
When, using second of feathering mode feathering.
Further improve, the preset value of the mean wind speed is 15 meter per seconds.
Further improve, the pitch rate of the first described feathering mode and second of feathering mode uses first low rate
The segmentation feathering mode of high-speed afterwards, and the low rate in the first described feathering mode is more than low in second of feathering mode
Speed.
After such design, the present invention at least has advantages below：
The present invention uses different feathering modes according to blower fan different wind speed when shutting down, the change oar between each feathering mode
Speed is different, relative to existing feathering halt mode, it can be ensured that and the steady feathering of Wind turbines is shut down, when effectively reducing shutdown
Shock loading, reduce the probability that Wind turbines are damaged.
Using big pitch rate when the present invention is also by setting mean wind speed relatively low, using small when mean wind speed is higher
Pitch rate, it can effectively suppress Wind turbines hypervelocity, the torque on wind wheel and thrust is slowly disappeared, be further ensured that wind turbine
The stable feathering of group is shut down.
Brief description of the drawings
Above-mentioned is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention, below
With reference to accompanying drawing, the present invention is described in further detail with embodiment.
Fig. 1 be Wind turbines of the present invention blade feathering method in feathering mode schematic diagram under low wind speed operating mode.
Fig. 2 be Wind turbines of the present invention blade feathering method in feathering mode schematic diagram under high wind speed operating mode.
Fig. 3 is the logic chart of the blade feathering method of Wind turbines of the present invention.
Embodiment
The blade feathering method of Wind turbines of the present invention, stopped according to the mean wind speed selection at least two when shutting down feathering
Machine feathering mode, it is different using the pitch rate between at least two feathering modes, and mean wind speed during shutdown feathering is relatively low
When corresponding feathering mode in pitch rate it is higher, pitch rate when mean wind speed is higher in corresponding feathering mode compared with
Low, the feathering method can effectively reduce the load in stopping process, ensure the purpose that Wind turbines are steadily shut down.
The mean wind speed when relatively low corresponding pitch rate than mean wind speed high principle of corresponding pitch rate when higher
For：When Wind turbines are in different propeller pitch angles, often change 1 degree of propeller pitch angle, pneumatic torque and wind wheel thrust loss are different, in blower fan
Propeller pitch angle often changes 1 degree of pneumatic torque when unit is in small propeller pitch angle and wind wheel thrust loss is smaller, on the contrary, at blower fan unit
Propeller pitch angle often changes 1 degree of pneumatic torque when big propeller pitch angle and wind wheel thrust loss is larger, and Wind turbines are in low wind speed in addition
When, propeller pitch angle opens paddle state completely, and the inertia of pitch-controlled system is big, causes the output delay of Wind turbines propeller pitch angle big, responds slowly,
Therefore big feathering speed is used in the low wind speed stage, can effectively suppresses Wind turbines hypervelocity, ensure the stable feathering of Wind turbines
Shut down, on the contrary, in the high wind speed stage, using small feathering speed, it is ensured that the stable feathering of Wind turbines is shut down.Shut down in feathering
During, according to the different appropriate regulation feathering speed of wind speed torque on wind wheel and thrust can be made slowly to disappear, it is ensured that wind-powered electricity generation
The steady feathering of unit is shut down, and effectively reduces shock loading during shutdown, reduces the probability that Wind turbines are damaged.
The present embodiment includes specifically being described exemplified by two kinds of feathering modes in a manner of the shutdown feathering.The blade feathering side
Method includes the first feathering mode and second of feathering mode.The pitch rate of the first feathering mode is compared with second of feathering side
The pitch rate of formula is high, if mean wind speed when shutting down feathering is less than 15 meter per second of preset value, using the first feathering mode
Feathering；If mean wind speed when shutting down feathering is more than or equal to 15 meter per second of preset value, using second of feathering mode feathering.
Shock loading during in order to further reduce shutdown and shorten the feathering time, the first feathering mode and second
The pitch rate of feathering mode uses the segmentation feathering mode of high-speed after first low rate, i.e., is first pressed in the first feathering mode
Feathering is carried out according to low rate V1, after continuing the T1 seconds, switches to high-speed V2 to carry out feathering, until propeller pitch angle reaches 90 degree, such as Fig. 1
It is shown；Feathering first is carried out according to low rate V3 in second of feathering mode, after continuing the T3 seconds, switches to high-speed V4 to carry out suitable
Oar, until propeller pitch angle reaches 90 degree, as shown in Figure 2；Wherein according to above-mentioned mean wind speed it is relatively low when corresponding pitch rate than flat
Equal wind speed compared with it is high when the high principle of corresponding pitch rate, the low rate V1 in the first feathering mode be more than second it is suitable
Low rate V3 in oar mode, can make the torque on wind wheel and thrust slowly disappear, it is ensured that the steady feathering of Wind turbines is shut down.
The invention feathering scheme judges shutdown feathering mode by wind speed monitoring intelligent, and specific logical relation step is：Ginseng
According to shown in accompanying drawing 3, Wind turbines master control system monitors the mean wind speed of blower fan in real time, goes out being averaged for second current moment n according to failure
Wind speed chooses feathering mode automatically.When mean wind speed is less than 15 meter per second, using the first feathering mode, i.e., low wind speed feathering
Mode feathering：In the first feathering stage, according to V1 speed featherings, after continuing the T1 seconds, switched to for the second feathering stage, it is suitable according to V2
Sharp feathering, until propeller pitch angle reaches 90 degree, second time T2；When mean wind speed is more than or equal to 15 meter per second, second of feathering is used
Mode, i.e. high wind speed feathering mode feathering：In the first feathering stage, according to V3 speed featherings, after continuing the T3 seconds, second is switched to
The feathering stage, according to the smooth featherings of V4, until propeller pitch angle reaches 90 degree, second time T4.
The present invention uses different feathering modes according to different wind speed, can be true relative to existing feathering halt mode
Protect the steady feathering of Wind turbines to shut down, effectively reduce shock loading during shutdown, reduce the probability that Wind turbines are damaged.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention, this
Art personnel make a little simple modification, equivalent variations or modification using the technology contents of the disclosure above, all fall within this hair
In bright protection domain.
Claims (5)
1. a kind of blade feathering method of Wind turbines, it is characterised in that the blade feathering method is：During according to shutting down feathering
Mean wind speed select at least two feathering modes, the pitch rate between at least two featherings mode is different.
A kind of 2. blade feathering method of Wind turbines according to claim 1, it is characterised in that putting down when shutting down feathering
Corresponding pitch rate is high when corresponding pitch rate is higher than mean wind speed when wind speed is relatively low.
A kind of 3. blade feathering method of Wind turbines according to claim 1, it is characterised in that the blade feathering side
Method includes the first feathering mode and second of feathering mode, more described second of the pitch rate of the first feathering mode
The pitch rate of feathering mode is high, if mean wind speed when shutting down feathering is less than preset value, using the first described feathering side
Formula feathering；If mean wind speed when shutting down feathering is more than or equal to preset value, using second of feathering mode feathering.
4. the blade feathering method of a kind of Wind turbines according to claim 3, it is characterised in that the mean wind speed
Preset value is 15 meter per seconds.
A kind of 5. blade feathering method of Wind turbines according to claim 3, it is characterised in that the first described feathering
The pitch rate of mode and second of feathering mode uses the segmentation feathering mode of high-speed after first low rate, and described first
Low rate in kind feathering mode is more than the low rate in second of feathering mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710797791.9A CN107701368B (en) | 2017-09-06 | 2017-09-06 | A kind of blade feathering method of Wind turbines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710797791.9A CN107701368B (en) | 2017-09-06 | 2017-09-06 | A kind of blade feathering method of Wind turbines |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107701368A true CN107701368A (en) | 2018-02-16 |
| CN107701368B CN107701368B (en) | 2019-06-25 |
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ID=61172155
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710797791.9A Active CN107701368B (en) | 2017-09-06 | 2017-09-06 | A kind of blade feathering method of Wind turbines |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322787A (en) * | 2018-09-10 | 2019-02-12 | 许继集团有限公司 | A kind of wind power generating set halt control method and control device |
| CN109737007A (en) * | 2018-12-21 | 2019-05-10 | 明阳智慧能源集团股份公司 | A kind of wind generating set yaw transfinites IPC variable Rate closing method |
| CN109751187A (en) * | 2018-12-21 | 2019-05-14 | 明阳智慧能源集团股份公司 | A kind of variable Rate feathering closing method of the wind power generating set based on second cabin acceleration |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004011543A (en) * | 2002-06-07 | 2004-01-15 | Fuji Heavy Ind Ltd | Horizontal axis type windmill |
| CN104329224A (en) * | 2014-11-13 | 2015-02-04 | 湖南世优电气股份有限公司 | Variable-rate pitching system and variable-rate pitching method for direct-drive permanent magnet wind generating set |
| CN106121914A (en) * | 2016-08-26 | 2016-11-16 | 三重型能源装备有限公司 | The closing method of blower fan and system under extremity |
| CN106884760A (en) * | 2016-11-25 | 2017-06-23 | 科诺伟业风能设备（北京）有限公司 | A kind of wind power generating set emergency feathering control method |
-
2017
- 2017-09-06 CN CN201710797791.9A patent/CN107701368B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004011543A (en) * | 2002-06-07 | 2004-01-15 | Fuji Heavy Ind Ltd | Horizontal axis type windmill |
| CN104329224A (en) * | 2014-11-13 | 2015-02-04 | 湖南世优电气股份有限公司 | Variable-rate pitching system and variable-rate pitching method for direct-drive permanent magnet wind generating set |
| CN106121914A (en) * | 2016-08-26 | 2016-11-16 | 三重型能源装备有限公司 | The closing method of blower fan and system under extremity |
| CN106884760A (en) * | 2016-11-25 | 2017-06-23 | 科诺伟业风能设备（北京）有限公司 | A kind of wind power generating set emergency feathering control method |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109322787A (en) * | 2018-09-10 | 2019-02-12 | 许继集团有限公司 | A kind of wind power generating set halt control method and control device |
| CN109737007A (en) * | 2018-12-21 | 2019-05-10 | 明阳智慧能源集团股份公司 | A kind of wind generating set yaw transfinites IPC variable Rate closing method |
| CN109751187A (en) * | 2018-12-21 | 2019-05-14 | 明阳智慧能源集团股份公司 | A kind of variable Rate feathering closing method of the wind power generating set based on second cabin acceleration |
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| Publication number | Publication date |
|---|---|
| CN107701368B (en) | 2019-06-25 |
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