CN103174587A - Wind power generation system and control method thereof - Google Patents
Wind power generation system and control method thereof Download PDFInfo
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- CN103174587A CN103174587A CN2011104418075A CN201110441807A CN103174587A CN 103174587 A CN103174587 A CN 103174587A CN 2011104418075 A CN2011104418075 A CN 2011104418075A CN 201110441807 A CN201110441807 A CN 201110441807A CN 103174587 A CN103174587 A CN 103174587A
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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 power generation system and a control method of the wind power generation system. The control method includes the following steps: firstly, starting a control unit to determine an operation mode of a wind power generator, then setting the wind power generator in a normal mode to enable the wind power generator to generate electric energy according to maximum power extracting curves, and judging whether rotation speed control conditions are met or not, if the rotation speed control conditions are met, switching the operation mode of the wind power generator to a rotation speed control mode to limit the output electric energy of the wind power generator through a maximum power point offset mode, and judging whether external wind power is greater than the a preset wind speed or not, if the external wind power is greater than the preset wind speed, switching the operation mode of the wind power generator to a safe mode to lower the rotation speed of the wind power generator through a maximum torque extraction mode to protect the wind power generation system.
Description
Technical field
The present invention relates to a kind of power generation system and controlling method thereof, and be particularly related to a kind of wind-power generating system and controlling method thereof.
Background technique
In recent years, due to the new line of environmental consciousness, make the technology of the renewable sources of energy develop rapidly.Among these renewable sources of energy, wind-power electricity generation is a kind of simple and zero generation mode that pollutes, it utilizes the flabellum of the wind-drive wind-driven generator that nature produces, external wind being converted to electric energy output, and then the certain electric power of supply load (as: battery or transmission of electricity grid).
Yet when external wind strengthened, the flabellum rotating speed of wind-driven generator also increased thereupon, but makes the electric energy that wind-driven generator produces greater than the tolerance range of load, to cause the equipment failure of power generation system.Moreover when external wind was excessive, the wind-driven generator body possibly can't bear too high rotating speed and out of control or damage.
In known technology, the protection mechanism of carrying out wind-driven generator in the face of external wind when excessive comprises by the three-phase output short-circuit of electronic component with generator, is down to the rotating speed of flabellum and generator minimum with the moment of torsion that utilizes generator.For example, utilize relay or circuit breaker, and with automatically controlled mode or manually mode start, with the three-phase output short-circuit with generator.But, when wind-driven generator is in when running up, if the generator Maximum Torque of utilizing the three-phase shortcircuit mode is directly stopped wind-driven generator is anxious, easily cause the damage on flabellum and electric generator structure.
Therefore, known technology still has defects and deficiency and needs to solve so far.
Summary of the invention
For problems of the prior art, the object of the present invention is to provide a kind of wind-power generating system and controlling method thereof, wherein wind-power generating system comprises wind-driven generator, control unit and load unit at least, and above-mentioned controlling method comprises following operating procedure.At first, start control unit, to determine the operator scheme of wind-driven generator.Subsequently, wind-driven generator is set in normal mode, makes wind-driven generator extract curve according to peak output and produce electric energy.Then, judge whether to meet rotating speed controlled conditions, if switching wind power generator to rotating speed control mode, limits the output electric energy of wind-driven generator by normal mode to pass through the maximum power point offset manner., judge external wind whether greater than default wind speed, if switching wind power generator to safe mode, to reduce the rotating speed of wind-driven generator by the Maximum Torque extracting mode, is protected wind-power generating system by rotating speed control mode thereafter.
According to an embodiment of content of the present invention, said method also is included in and whether detects external wind in the unit time still greater than default wind speed, if keep wind-driven generator in safe mode.
According to an embodiment of content of the present invention, but its medium speed controlled conditions comprises electric energy that wind-driven generator produces greater than the tolerance range of load unit.
According to an embodiment of content of the present invention, its medium speed controlled conditions comprises the rotating speed of wind-driven generator greater than default safe speed of rotation.
According to an embodiment of content of the present invention, but its medium speed controlled conditions comprises the extraction electric current of wind-driven generator greater than the tolerance range of coiling wire diameter.
According to an embodiment of content of the present invention, its medium speed controlled conditions comprises noise that wind-driven generator produces greater than the pre-set specifications value.
According to an embodiment of content of the present invention, wherein when wind-driven generator operated in safe mode, wind-driven generator was pulled down to the low-speed running state.
According to an embodiment of content of the present invention, wherein the electric energy that produces of wind-driven generator is dispensed in load unit and brake units by control unit.
Another object of the present invention is to provide a kind of wind-power generating system, comprise wind-driven generator, control unit and load unit.Wind-driven generator comprises blower module and generator, and wherein blower module is subjected to the promotion of external wind, produces electric energy with the running that drives generator.Control unit electric property coupling wind-driven generator, and determine that according to rotating speed, output power, extraction electric current, noise and the wind outside intensity of force of wind-driven generator wind-driven generator operates in the one in normal mode, rotating speed control mode and safe mode.Load unit electric property coupling control unit, the electric energy that produces in order to receive wind-driven generator.
According to an embodiment of content of the present invention, said system also comprises brake units.Brake units electric property coupling wind-driven generator and control unit, the electric energy that distributes in order to reception control unit.
According to an embodiment of content of the present invention, said system also comprises brake units.This wind-driven generator of brake units electric property coupling and this control unit, and a control signal that produces in order to receive this control unit make the switch periods of this brake units adjust, to control the rotating speed of this wind-driven generator.
According to an embodiment of content of the present invention, wherein control unit operates in normal mode in order to control wind-driven generator, and wind-driven generator extracts curve generation electric energy at normal mode according to a peak output.
According to an embodiment of content of the present invention, wherein control unit switches to rotating speed control mode with wind-driven generator by normal mode in order to a rotating speed controlled conditions of foundation wind-driven generator, makes the output power limit of wind-driven generator within the specific limits.In addition, wind-power generating system can comprise brake units, wherein brake units electric property coupling wind-driven generator and control unit, an and control signal that produces in order to reception control unit, wherein under rotating speed control mode, the switch periods of brake units is adjusted according to control signal and is controlled the rotating speed of wind-driven generator.
According to an embodiment of content of the present invention, the speed that control unit is used to an external wind during greater than a default wind speed with switching wind power generator by rotating speed control mode to safe mode.
According to an embodiment of content of the present invention, control unit in order to the speed that judges an external wind whether greater than a default wind speed, and in the speed of external wind during greater than default wind speed with the slow low-speed running state of being down to of the rotating speed of wind-driven generator.
Beneficial effect of the present invention is, therefore, the technology contents that uses the present invention to invent can improve shortcoming and the deficiency of above-mentioned known technology, slows down in the anxious damage that stops causing of high wind speed apparatus for lower wind generator.
Description of drawings
For above and other purpose of the present invention, feature, advantage and embodiment can be become apparent, appended the description of the drawings is as follows:
Fig. 1 illustrates the circuit block diagram according to a kind of wind-power generating system of a mode of execution of content of the present invention.
Fig. 2 illustrates the output power schematic diagram under normal mode, rotating speed control mode and the safe mode of wind-driven generator in an embodiment of content of the present invention.
Fig. 3 illustrates the schematic flow sheet according to the controlling method of a kind of wind-power generating system of a mode of execution of content of the present invention.
Fig. 4 illustrates the moment of torsion rotating speed curve synoptic diagram of wind-driven generator under the peak output of each wind speed is extracted in an embodiment of content of the present invention.
Fig. 5 A illustrates wind-driven generator in an embodiment of content of the present invention and extracts moment of torsion rotating speed curve synoptic diagram under extracting with Maximum Torque in peak output.
Fig. 5 B illustrates wind-driven generator in an embodiment of content of the present invention and extracts moment of torsion rotating speed curve synoptic diagram under extracting with Maximum Torque in the peak output of each wind speed.
Wherein, description of reference numerals is as follows:
100: wind-power generating system
110: wind-driven generator
112: blower module
114: generator
120: control unit
130: load unit
140: brake units
310～370: operating procedure
500,510,512,514,518,520: curve
Embodiment
Below will and be described in detail with accompanying drawing the spirit that clearly demonstrates content of the present invention, in any affiliated technical field, the technician is after the preferred embodiment of understanding content of the present invention, when can be by the technology of content of the present invention institute teaching, change and modification, it does not break away from spirit and the scope of content of the present invention.
Generally typically referring to the error of numerical value or scope in 20 percent about " approximately " used herein, " approximately " or " roughly approximately ", is preferably in ten Percent, is in 5 percent more preferably.Wen Zhongruo is without offering some clarification on, and its mentioned numerical value is all regarded as approximative value, namely as " approximately ", " approximately " or " roughly approximately " represented error or scope.
Fig. 1 illustrates the circuit block diagram according to a kind of wind-power generating system 100 of a mode of execution of content of the present invention.Wind-power generating system 100 can comprise wind-driven generator 110, control unit 120 and load unit 130.Wind-driven generator 110 can comprise blower module 112 and generator 114, and wherein blower module 112 is subjected to the promotion of external wind, produces electric energy in order to the running that drives generator 114.Control unit 120 electric property coupling wind-driven generators 110 (perhaps directly or indirectly coupling generator 114), and determine that according to the rotating speed of wind-driven generator 110, output power, extraction electric current, noise and wind outside intensity of force wind-driven generator 110 operates in the one in as shown in Figure 2 normal mode, rotating speed control mode and safe mode, with the rotating speed of restriction wind-driven generator 110 and output power in safety range.Fig. 2 illustrates the output power schematic diagram under normal mode, rotating speed control mode and the safe mode of wind-driven generator 110 in an embodiment of content of the present invention.
It should be noted that, in the present embodiment, blower module 112 can comprise a plurality of flabellums (fan blades), when producing moment of torsion when external wind promotion flabellum, blower module 112 namely is subjected to the driving of moment of torsion and rotates, and drive generator 114 by transmission device (not illustrating), to produce electric energy.
In an embodiment of content of the present invention, wind-power generating system 100 also can comprise brake units 140.Brake units 140 electric property coupling wind-driven generators 110 and control units 120, the electric energy that can distribute in order to reception control unit 120 sends the electric energy of load unit 130 to regulate wind-driven generator 110.On the other hand, but brake units 140 control signal that produces of reception control unit 120 also, and brake units 140 and the switch periods by control signal adjustment itself are to control the rotating speed of wind-driven generator 110.
Please be simultaneously with reference to Fig. 1 and Fig. 2.(for example: in the time of 12m/s), wind-driven generator 110 operates in normal mode to the wind speed of ordering less than A when external wind.At this moment, wind-driven generator 110 extracts curve (maximum power extraction curve) according to peak output and produces electric energy, makes it all have maximum power output under each corresponding wind speed.
The wind speed of ordering greater than A when external wind and the wind speed of ordering less than C are (for example: 18m/s) or when meeting the judgment mechanism of above-mentioned rotating speed controlled conditions, control unit 120 switches to rotating speed control mode with wind-driven generator 110 by normal mode, limit the output electric energy of wind-driven generator 110 to be offset (maximum power point shifting) mode by maximum power point, and control the rotating speed of wind-driven generator 110.It should be noted that, in this rotating speed control mode, control unit 120 can extract the skew of curve by peak output, makes wind-driven generator 110 no longer extract curve according to peak output and produces electric energy.In addition, control unit 120 can be dispensed to the excrescent electric power that wind-driven generator 110 produces in brake units 140, the electric energy that is received with regulating load unit 130.Moreover control unit 120 also can provide control signal to brake units 140, by adjusting the switch periods of brake units 140, to control the rotating speed of wind-driven generator 110.Therefore, in rotating speed control mode, wind-driven generator 110 externally still can remain in the safe speed of rotation scope under the lifting of wind-force, and keeps certain output power, as shown in B point in Fig. 2.
During the wind speed of ordering greater than C when external wind, the rotating speed of wind-driven generator 110 can't be controlled by above-mentioned rotating speed control mode again, and may make wind-driven generator 110 produce the phenomenons such as the out of control or damage of rotating speeds.At this moment, control unit 120 can switch to safe mode by rotating speed control mode with wind-driven generator 110, and (the maximum torque extraction) mode of can extracting by Maximum Torque reduces the rotating speed of wind-driven generator 110.Therefore, wind-driven generator 110 is pulled down to the low-speed running state, make wind-driven generator 110 roughly approximately maintain Fig. 2 under safe mode in the low-power output shown in the D point, with the normal operation of protection wind-power generating system 100.
Fig. 3 illustrates the schematic flow sheet according to the controlling method of a kind of wind-power generating system of a mode of execution of content of the present invention.This controlling method can be applicable in wind-power generating system shown in Figure 1 100, but not as limit, its apparatus structure is same as the previously described embodiments or similar, repeats no more in this.With reference to Fig. 1 and Fig. 3, at first, in step 310, can start control unit 120 simultaneously, to determine the operator scheme of wind-driven generator 110.Subsequently, in step 320, wind-driven generator 110 is set in normal mode, makes wind-driven generator 110 extract curve according to peak output and produce electric energy.It should be noted that, in this normal mode, along with the lifting of external wind, the rotating speed of blower module 112 increases thereupon, makes the electric energy that generator 114 produces also increase thereupon.In addition, it is blower module 112 and the maximum power output state that generator 114 mates under each wind speed that peak output is extracted curve, makes wind-driven generator 110 all have maximum power output under each wind speed of correspondence.
Then, in step 330, control unit 120 can judge whether rotating speed controlled conditions meets.For instance, but rotating speed controlled conditions can comprise electric energy that wind-driven generator 110 produces greater than the tolerance range of load unit 130 (for example: 100MW), the rotating speed of wind-driven generator 110 greater than default safe speed of rotation (for example: but 1200rpm), the extraction electric current of wind-driven generator 110 greater than the tolerance range of coiling wire diameter (for example: 30A) and the noise (for example: mechanicalness noise or aerodynamic noise) that produces of wind-driven generator 110 greater than the pre-set specifications value (for example: 75dB) at least one.If the words that rotating speed controlled conditions meets, execution in step 340, wind-driven generator 110 is switched to rotating speed control mode by normal mode, with the output electric energy by maximum power point offset manner restriction wind-driven generator 110 in safety range, but but make electric energy that wind-driven generator 110 produces less than the rotating speed of the tolerance range of load unit 130, wind-driven generator 110 less than the extraction electric current of default safe speed of rotation, wind-driven generator 110 less than the tolerance range of coiling wire diameter and noise that wind-driven generator 110 produces less than in the pre-set specifications value at least one.If the incongruent words of rotating speed controlled conditions return back to step 320.Moreover the electric energy that wind-driven generator 110 produces can be dispensed in load unit 130 and brake units 140 by control unit 120, but the electric energy that is received with regulating load unit 130 is within tolerance range.
Thereafter, in step 350, greater than default wind speed (for example: 18m/s) whether the speed that control unit 120 can judge external wind.If, execution in step 360, switching wind power generator 110 to safe mode, to reduce the rotating speed of wind-driven generator 110 by the Maximum Torque extracting mode, is protected the safety of whole wind-power generating system 100 by rotating speed control mode.If not, return back to step 320.
In an embodiment of content of the present invention, said method also is included in and whether detects external wind in the unit time still greater than default wind speed, as shown in step 370.If execution in step 360 is to keep wind-driven generator 110 in safe mode.If not, return back to step 320.
For instance, when typhoon is attacked, its, wind-force (for example: 18m/s) often surpassed maximum wind speed that wind-driven generator 110 can bear moment, therefore, during typhoon is attacked, control unit 120 can according to detect average or moment air speed value wind-driven generator 110 is switched to safe mode.Subsequently, whether control unit 120 can detect external wind still greater than default wind speed within the unit time (for example: 1 hour, 12 hours or 24 hours), with judge typhoon whether away from.For example, the average external wind when detected 12 hours is not during greater than default wind speed, represent typhoon away from, can return back to step 320, to recover wind-driven generator 110 in normal mode.
Please be simultaneously with reference to Fig. 1～Fig. 4.Fig. 4 illustrates the moment of torsion rotating speed curve synoptic diagram of wind-driven generator 110 under the peak output of each wind speed is extracted in an embodiment of content of the present invention, and the moment of torsion of the wind-driven generator 110 when wherein curve 402～curve 420 represents respectively that external wind is 2m/s～20m/s is to speed curves figure.For instance, the maximum of wind-driven generator 110 can be born moment of torsion and be can be 5.9N-m, and default safe speed of rotation is below 1200rpm.When external wind was 10m/s, it was that 4N-m and rotating speed are in the safety range of 700rpm that wind-driven generator 110 can be controlled in moment of torsion, as shown in the M point of Fig. 4.During to 12m/s, if the rotating speed of wind-driven generator 110 will be controlled at 700rpm, moment of torsion reaches the 5.9N-m that maximum can be born moment of torsion, as shown in the E point of Fig. 4 when wind-power lifting.During to 20m/s, if the rotating speed of wind-driven generator 110 will be controlled at 700rpm, moment of torsion reaches 13.5N-m when wind-power lifting, as shown in the G point of Fig. 4, has exceeded the maximum of wind-driven generator 110 this moment and can bear moment of torsion, causes the damage of wind-driven generator 110.In addition, when wind-force was 20m/s, if the moment of torsion of wind-driven generator 110 will be controlled at 5.9N-m, rotating speed reached 2400rpm, and as shown in the F point of Fig. 4, this moment, rotating speed far surpassed the default safe speed of rotation of wind-driven generator 110, and caused the damage of wind-driven generator 110.Hence one can see that, in the present embodiment, when external wind during greater than 12m/s, wind-driven generator 110 must be switched to rotating speed control mode or safe mode, and be offset or the Maximum Torque extracting mode is controlled the rotating speed of wind-driven generator 110 and moment of torsion in safety range, to keep the normal operation of wind-power generating system 100 by maximum power point.
Fig. 5 A illustrates wind-driven generator 110 in an embodiment of content of the present invention and extracts moment of torsion rotating speed curve synoptic diagram under extracting with Maximum Torque in peak output.The moment of torsion rotating speed plotted curve that curve 500 is wind-driven generator 110 under Maximum Torque is extracted, the curve 510 moment of torsion rotating speed plotted curve under the peak output when externally wind-force is 10m/s is extracted for wind-driven generator 110.When wind-force is excessive, controller 120 can be arranged at safe mode with wind-driven generator 110, and the current draw by Maximum Torque, as shown in curve 500, the moment of torsion of being brought into by blower module 112 to suppress external wind is with the slow low-speed running state of being down to of the rotating speed of wind-driven generator 110.When wind-force was not excessive, if wind-driven generator 110 is arranged at safe mode, the rotating speed of wind-driven generator 110 can drop near halted state, as shown in the plotted point of curve 500 and curve 510.
Fig. 5 B illustrates wind-driven generator 110 in an embodiment of content of the present invention and extracts moment of torsion rotating speed curve synoptic diagram under extracting with Maximum Torque in the peak output of each wind speed, moment of torsion rotating speed plotted curve under peak output when the curve 500 moment of torsion rotating speed plotted curve that is wind-driven generator 110 under Maximum Torque is extracted wherein, curve 510～curve 520 are respectively wind-driven generator 110 externally wind-force is 10m/s～20m/s is extracted.If take the external wind of 12m/s as example, Maximum Torque extract curve with the intersection of peak output extraction curve in the J point, therefore, when wind-driven generator 110 operated in safe mode, the rotating speed of wind-driven generator 110 under Maximum Torque extraction state was about 20rpm.When external wind was promoted to 20m/s, the rotating speed of wind-driven generator 110 under Maximum Torque extraction state also was increased to approximately 100rpm thereupon, as shown in the M point.Therefore, in the present embodiment, wind-driven generator 110 has advantages of ACTIVE CONTROL, and can slow down in the anxious damage that stops causing of high wind speed apparatus for lower wind generator 110.
Compared to the known practice, in content above-described embodiment of the present invention, control unit can initiatively judge according to above-mentioned rotating speed controlled conditions and wind outside intensity of force the operator scheme of wind-driven generator, make wind-driven generator can operate in normal mode, rotating speed control mode and safe mode, and respectively by peak output is extracted, the modes such as maximum power point skew and Maximum Torque extraction are controlled wind-driven generator rotating speed and output power, to keep the normal operation of whole wind-power generating system.
Mentioned step in content of the present invention except chatting especially bright its order person, all can be adjusted order before and after it according to actual demand, even can be simultaneously or part carry out simultaneously, and be not limited with above-mentioned.
Although the present invention discloses as above with mode of execution; so it is not to limit the present invention, any those skilled in the art, without departing from the spirit and scope of the present invention; when can be used for a variety of modifications and variations, so protection scope of the present invention is as the criterion when looking the claim person of defining.
Claims (15)
1. the controlling method of a wind-power generating system, wherein this wind-power generating system comprises a wind-driven generator, a control unit and a load unit at least, and this controlling method comprises:
Start this control unit, to determine the operator scheme of this wind-driven generator;
This wind-driven generator is set in a normal mode, makes this wind-driven generator extract curve according to a peak output and produce electric energy;
Judge whether to meet a rotating speed controlled conditions, if switch this wind-driven generator by this normal mode to one rotating speed control mode, to limit the output electric energy of this wind-driven generator by a maximum power point offset manner; And
Whether judge external wind greater than a default wind speed, if, switch this wind-driven generator by this rotating speed control mode to one safe mode, to reduce the rotating speed of this wind-driven generator by a Maximum Torque extracting mode, protect this wind-power generating system.
2. the method for claim 1 also comprises:
Detect external wind whether still greater than this default wind speed, if keep this wind-driven generator in this safe mode within a unit time.
3. the method for claim 1, wherein this rotating speed controlled conditions comprises:
But the electric energy that this wind-driven generator produces is greater than the tolerance range of this load unit.
4. the method for claim 1, wherein this rotating speed controlled conditions comprises:
The rotating speed of this wind-driven generator is greater than a default safe speed of rotation.
5. the method for claim 1, wherein this rotating speed controlled conditions comprises:
But the extraction electric current of this wind-driven generator is greater than the tolerance range of coiling wire diameter.
6. the method for claim 1, wherein this rotating speed controlled conditions comprises:
The noise that this wind-driven generator produces is greater than a pre-set specifications value.
7. the method for claim 1, wherein the electric energy that produces of this wind-driven generator is dispensed in this load unit and a brake units by this control unit.
8. wind-power generating system comprises:
One wind-driven generator comprises a blower module and a generator, and this blower module is subjected to the promotion of external wind, produces electric energy to drive this generator operation;
One control unit, this wind-driven generator of electric property coupling, and determine that according to rotating speed, output power, extraction electric current, noise and the wind outside intensity of force of this wind-driven generator this wind-driven generator operates in the one in a normal mode, a rotating speed control mode and a safe mode; And
One load unit, this control unit of electric property coupling, the electric energy that produces in order to receive this wind-driven generator.
9. wind-power generating system as claimed in claim 8 also comprises:
One brake units, this wind-driven generator of electric property coupling and this control unit, the electric energy that distributes in order to receive this control unit sends the electric energy of this load unit to regulate this wind-driven generator.
10. wind-power generating system as claimed in claim 8 also comprises:
One brake units, this wind-driven generator of electric property coupling and this control unit, and a control signal that produces in order to receive this control unit make the switch periods of this brake units adjust, to control the rotating speed of this wind-driven generator.
11. wind-power generating system as claimed in claim 8, wherein this control unit operates in this normal mode in order to control this wind-driven generator, and this wind-driven generator extracts curve generation electric energy at this normal mode according to a peak output.
12. wind-power generating system as claimed in claim 11, wherein this control unit switches to this rotating speed control mode with this wind-driven generator by this normal mode in order to the rotating speed controlled conditions according to this wind-driven generator, makes the output power limit of this wind-driven generator within the specific limits.
13. wind-power generating system as claimed in claim 12 also comprises:
One brake units, this wind-driven generator of electric property coupling and this control unit, and a control signal that produces in order to receive this control unit, wherein under this rotating speed control mode, the switch periods of this brake units is adjusted according to this control signal and is controlled the rotating speed of this wind-driven generator.
14. wind-power generating system as claimed in claim 12, wherein this control unit be used to an external wind speed during greater than a default wind speed with this switching wind power generator by this rotating speed control mode to this safe mode.
15. wind-power generating system as claimed in claim 12, wherein this control unit in order to the speed that judges an external wind whether greater than a default wind speed, and in the speed of this external wind during greater than this default wind speed with the slow low-speed running state of being down to of the rotating speed of this wind-driven generator.
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| CN104832371A (en) * | 2015-05-28 | 2015-08-12 | 大唐山东烟台电力开发有限公司 | Control method and system for wind generating set |
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| WO2022068068A1 (en) * | 2020-09-30 | 2022-04-07 | 新疆金风科技股份有限公司 | Wind power generator set and power control method and device therefor |
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| CN104454551A (en) * | 2013-09-18 | 2015-03-25 | 台达电子工业股份有限公司 | Fan control system and control method thereof |
| CN104832371A (en) * | 2015-05-28 | 2015-08-12 | 大唐山东烟台电力开发有限公司 | Control method and system for wind generating set |
| CN104832371B (en) * | 2015-05-28 | 2017-10-24 | 大唐山东烟台电力开发有限公司 | A kind of wind power generating set control method and system |
| CN105649876A (en) * | 2015-12-31 | 2016-06-08 | 北京金风科创风电设备有限公司 | Control method and device of wind generating set |
| CN105649876B (en) * | 2015-12-31 | 2018-10-19 | 北京金风科创风电设备有限公司 | Control method and device of wind generating set |
| CN109083815A (en) * | 2017-06-14 | 2018-12-25 | 通用电气公司 | Offset switching method for wind turbine operation |
| WO2022068068A1 (en) * | 2020-09-30 | 2022-04-07 | 新疆金风科技股份有限公司 | Wind power generator set and power control method and device therefor |
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