CN102200095A - Fan operation method, wind speed measurement device and wind generator set - Google Patents
Fan operation method, wind speed measurement device and wind generator set Download PDFInfo
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Abstract
The invention provides a fan operation method, a wind speed measurement device and a wind generator set. The fan operation method comprises the following steps: 10) measuring the wind speed of air flow before the impeller of a fan in advance; 20) ensuring that the operation state of the wind generator set is matched with the wind speed measured in advance; and 30) continuously and repeatedly executing the step 10) and the step 20) to ensure that the wind generator set operates continuously and efficiently. By adopting the method, the operational control accuracy of the fan can be effectively increased and the operation stability and power generating efficiency of the fan can be increased. The wind speed measurement device provided by the invention can be used in the wind speed measurement step of the fan operation method, thereby providing an accurate wind speed value for the wind generator set. The wind generator set provided by the invention adopts the fan operation method and/or the wind speed measurement device which are/is provided by the invention, thus the wind generator set has the advantages of higher operation stability and power generating efficiency.
Description
Technical field
The present invention relates to technical field of wind power generation, particularly, relate to the wind power generating set of a kind of fan operation method, wind speed measuring device and application said method and/or device.
Background technique
In the working procedure of wind power generating set, need measure the natural wind speed in the draught fan impeller environment of living in constantly, according to the wind speed of being surveyed the propeller pitch angle of impeller is adjusted then, thereby the rotational speed that makes impeller is real-time change with the change of wind speed, with the fluctuation of reduction blower fan output power, and the actual power efficient of raising wind power generating set.
See also Fig. 1, be a kind of structural representation of common wind power generating set.A point place is a mechanical type wind speed measuring device commonly used at present among the figure.This device is similar to employed impeller speed measurement device in the weather monitoring, that is, impeller is along with air flows is rotated, and the rotating speed of impeller and wind speed have proportional relation, thereby can know the wind speed of this moment according to the rotating speed of impeller.
Yet, adopt the wind power generating set of above-mentioned measuring wind speed mode to have following problems in actual applications:
One, because above-mentioned wind speed measuring device is installed in the place, rear position of impeller more, and air can at first just can pass through this wind speed measuring device through impeller and after losing certain kinetic energy in flow process.Therefore, can't accurately record the air speed value in impeller the place ahead, and the wind speed that this position is measured is used for draught fan impeller is become oar when control, will certainly the fan operation bring certain departure in above-mentioned position.
They are two years old, above-mentioned wind speed measuring device adopts the metering system of mechanical structure, thereby in measuring phase, be subjected to the influence of factors such as for example various frictions, machine error and environment easily, thereby influence its measuring accuracy, and then reduce the degree of regulation of blower fan, and finally influence the generating efficiency of blower fan to the impeller propeller pitch angle.
Its three, for these reasons, the technician attempts by adopting generator speed to realize accurate control to pitch-controlled system as Control Parameter.Yet because therefore the rotating speed of generator can only could be adjusted propeller pitch angle after generator speed changes by wind speed decision indirectly, this just certainly will cause certain hysteresis quality.More serious problem is, above-mentioned control mode can make the output power of blower fan be in the state of continuous fluctuation all the time, not only reduces the actual power amount of blower fan, but also can increase the load of impeller system, quicken its ageing process, and then influence the normal working life of blower fan.
Summary of the invention
For addressing the above problem, the invention provides a kind of fan operation method, it can be for blower fan provides wind speed parameter accurately, to improve the stability and the generating efficiency of fan operation.
For addressing the above problem, the present invention also provides a kind of wind speed measuring device, and it equally can be for blower fan provides wind speed parameter accurately, and improves the stability and the generating efficiency of fan operation.
For addressing the above problem, the present invention also provides a kind of wind power generating set of using above-mentioned fan operation method and/or wind speed measuring device, it adopts the Control Parameter of more accurate wind speed as fan operation, thereby has higher operation stability and generating efficiency.
For this reason, the invention provides a kind of fan operation method, be used to improve the generating efficiency of wind power generating set, it comprises the steps: 10) measure the wind speed of air-flow before arriving draught fan impeller in advance; 20) running state of wind power generating set and the wind speed that records in advance are complementary, to improve the generating efficiency of wind power generating set; 30) execution in step 10 continuously and repeatedly) and step 20), so that wind power generating set continues operation efficiently.
Wherein, in step 10), the wind speed of Ce Lianging is the wind speed of air-flow in certain distance position, draught fan impeller the place ahead in advance.
Wherein, step 10) specifically comprises: measurement ripple from characteristic frequency to certain distance position, draught fan impeller the place ahead that 101) launch; 102) receive the measurement ripple that reflects through airborne particle; 103) according to the principle of Doppler effect, the measurement wave frequency with the measurement wave frequency and the emission that reflect when initial compares and calculates, to draw the wind speed of certain distance position, draught fan impeller the place ahead.
Wherein, measure ripple and comprise laser or ultrasound.
Wherein, in the step 10), in step 103) also comprise to the measurement ripple that reflects and emission the step that the measurement ripple when initial amplifies before.
Wherein, step 20) specifically comprise: certain at interval make-up time, the running state of wind power generating set and the wind speed that records in advance are complementary; The above-mentioned make-up time is substantially equal to air-flow according to the wind speed that is recorded in advance, flows to the duration that place, draught fan impeller position needs from the position of measuring wind in advance; Make-up time changes with change of wind velocity, and is inversely proportional to wind speed.
Wherein, in step 20) in, the running state of wind power generating set and the step that the wind speed that records in advance is complementary are specifically comprised: the propeller pitch angle of draught fan impeller is adjusted into and the corresponding angle of current wind speed.
In addition, the present invention also provides a kind of wind speed measuring device, is used for measuring the wind speed of air-flow before the arrival draught fan impeller in advance in the fan operation method that the invention described above provides.This wind speed measuring device comprises measures ripple transmitter module, measurement ripple receiving module, data analysis module and output module.Wherein, measure the ripple transmitter module in order to measurement ripple to certain distance position, draught fan impeller the place ahead emission characteristic frequency; Measure the ripple receiving module in order to receive the measurement ripple that reflects through airborne particle; Measurement wave frequency when initial compares and calculates data analysis module in order to the measurement wave frequency that will reflect and emission, to draw the wind speed of certain distance position, draught fan impeller the place ahead; Output module is in order to export to the wind speed that data analysis module drew at least one typhoon power generator group.
Wherein, measure ripple and comprise laser; Correspondingly, measure the ripple transmitter module and comprise generating laser, measure ripple receiving module enclosed mass laser pickoff.
Wherein, measure ripple and comprise ultrasound; Correspondingly, measure the ripple transmitter module and comprise ultrasonic transmitter, measure ripple receiving module enclosed mass ultrasonic receiver.
Wherein, data analysis module comprises amplifier, frequency comparator and calculator, and wherein, amplifier amplifies in order to will measure the received measurement ripple of ripple receiving module; Measurement wave frequency when initial compares frequency comparator in order to the measurement wave frequency that will reflect and emission, to draw the variable quantity of comparing with the measurement wave frequency of launching when initial through the measurement wave frequency that reflects; Calculator is in order to calculate the wind speed of certain distance position, draught fan impeller the place ahead according to variable quantity.
Wherein, wind speed measuring device also comprises cabin bracket, is used for wind speed measuring device is fixed in the nacelle exterior of wind power generating set.
Wherein, wind speed measuring device also comprises ground support, in order to wind speed measuring device is fixed near the ground the wind power generating set.
Wherein, wind speed measuring device specifically calculates the wind speed of certain distance position, draught fan impeller the place ahead according to the principle of Doppler effect.
As another kind of technological scheme, the present invention also provides a kind of wind power generating set, and the fan operation method that its application has the invention described above to provide is moved control, to improve its generating efficiency.
In addition, the present invention also provides a kind of wind power generating set, it comprises the wind speed measuring device that the invention described above provides, and in order to the wind speed in impeller the place ahead of measuring wind power generating set in advance, wind power generating set is adjusted the running state of self according to the wind speed of measuring in advance.
The present invention has following beneficial effect:
Fan operation method provided by the invention is measured the wind speed of air-flow before arriving draught fan impeller at first in advance; The running state and the above-mentioned wind speed that records in advance of wind power generating set are complementary, to reach the purpose of the generating efficiency that improves wind power generating set; And, can make wind power generating set continue operation efficiently by carrying out above-mentioned steps continuously and repeatedly.For available technology adopting mechanical type wind speed measuring device, operation method provided by the invention can predict its wind speed before air-flow reaches draught fan impeller, and with this wind speed one of major parameter as the control fan operation, thereby can avoid measuring the departure that impeller rear wind speed is caused in the prior art, and then improve the control accuracy of blower fan and the stability of operation thereof; On this basis, can make wind power generating set have higher wind energy transformation and utilization ratio, thereby obtain higher generating efficiency.
And, because the measured wind speed of fan operation method provided by the invention can be as the Control Parameter of fan operation, thereby need not to adopt again the Control Parameter of generator speed as blower fan, also just effectively avoided adopting the problems of generator speed as Control Parameter.
And, in preferred an enforcement, fan operation method provided by the invention is by the measurement ripple of characteristic frequency and realize non-contact measurement to wind speed, thereby avoided mechanical type wind speed measuring device of the prior art to be subjected to the problem of various machine errors and such environmental effects easily, and then can effectively improve the control accuracy and the stability of fan operation.
Wind speed measuring device provided by the invention comprises measures ripple transmitter module, measurement ripple receiving module, data analysis module and output module.Can be by above-mentioned measurement ripple transmitter module to the measurement ripple of target direction (such as the position of draught fan impeller the place ahead certain distance) emission characteristic frequency, and by measuring the ripple receiving module the above-mentioned measurement ripple that reflects through airborne particle is received, the measurement wave frequency when initial compares and calculates to draw the wind speed on the above-mentioned target direction to above-mentioned measurement wave frequency that reflects and emission via data analysis module then; By output module above-mentioned wind speed is sent to the control system of wind power generating set at last.By said process as can be known, wind speed measuring device provided by the invention can be realized the wind speed of certain distance position, draught fan impeller the place ahead is carried out contactless measurement, thereby can before arriving draught fan impeller, air-flow obtain accurate air speed value, and then for the operation of blower fan provides accurate Control Parameter, and finally improve blower fan generating efficiency and operation stability.
Using in the wind power generating set provided by the invention has the fan operation method that the invention described above provides and/or to be provided with the wind speed measuring device that the invention described above provides.Therefore, in the running of wind-driven generator, the wind speed in draught fan impeller the place ahead can be obtained in advance, and with the Control Parameter of this wind speed, thereby the operation stability and the generating efficiency of wind power generating set can be effectively improved as wind power generating set.
Description of drawings
Fig. 1 is a kind of structural representation of at present common wind power generating set;
Fig. 2 is the schematic flow sheet of a specific embodiment of fan operation method provided by the invention;
Fig. 3 is the schematic flow sheet of wind speed measurement procedure in another specific embodiment of fan operation method provided by the invention;
Fig. 4 is the structured flowchart of a specific embodiment of wind speed measuring device provided by the invention; And
Fig. 5 is the structured flowchart of a kind of embodiment of the data analysis module in the wind speed measuring device shown in Figure 4.
Embodiment
For making those skilled in the art understand technological scheme of the present invention better, be described in detail below in conjunction with the wind power generating set of accompanying drawing to fan operation method provided by the invention, wind speed measuring device and application said method and/or device.
See also Fig. 2, be the schematic flow sheet of a kind of specific embodiment of fan operation method provided by the invention.As shown in the figure, in the present embodiment, this fan operation method comprises the steps: 10) measure the wind speed of air-flow before arriving draught fan impeller in advance; 20) running state of wind power generating set and the wind speed that records in advance are complementary, to improve the generating efficiency of wind power generating set; 30) execution in step 10 continuously and repeatedly) and step 20), so that wind power generating set continues operation efficiently.
Wherein, step 10) specifically is meant and adopts certain technological means just its wind speed to be measured before air-flow arrives draught fan impeller, for example wind speed measuring device is set, the wind speed of this position is measured in real time by this wind speed measuring device in a certain position of draught fan impeller the place ahead certain distance.Be understood that easily, measured wind speed is that air-flow does not pass through draught fan impeller and the flowing velocity of kinetic energy loss not as yet in the step 10), therefore in the control accuracy that this wind speed can effectively be promoted blower fan during as the Control Parameter of fan operation, reduce the wave properties of blower fan output power, thereby, that is: improve generating efficiency in the trans-utilization rate that significantly improves wind energy.
In addition, for above-mentioned steps 10) position of carrying out measuring wind speed can choose flexibly, specific as follows: one, opposite direction for above-mentioned measuring wind speed position and draught fan impeller, for example can select the dead ahead of draught fan impeller, also can select certain interior direction position of several angle scope in draught fan impeller the place ahead, also can adjust factors such as Influences on Wind Velocity according to control accuracy requirement, fabricating yard and the surrounding enviroment of wind power generating set; Certainly, preferred measuring wind speed position should be positioned at the dead ahead of draught fan impeller.They are two years old, the position of above-mentioned measuring wind and the distance between the draught fan impeller equally can be according to actual needs and/or road test determine, definite principle of this distance is: if can guarantee distance that air-flow its wind speed when the position of above-mentioned measuring wind flow to the draught fan impeller position roughly remains unchanged all can, all should be considered as protection scope of the present invention based on the technological scheme of mentioned above principle and distortion thereof; For example, the air speed value at measured air speed value and place, impeller position about equally in impeller diameter is about 100 meters the about 20 meters scopes in impeller the place ahead of wind power generating set, so just measured wind speed in the about 20 meters scopes in above-mentioned impeller the place ahead can be considered as the wind speed at impeller position place, and above-mentioned about 20 meters distance range promptly can be used as the optional scope of distance between the position of carrying out measuring wind speed and the impeller.
In addition, for the wind speed measuring device that is adopted in the above-mentioned measuring wind speed process, for example can adopt mechanical type wind speed measuring device of the prior art, also can adopt the wind speed measuring device of special-purpose induction type, perhaps, can also adopt the contactless wind speed measuring device of other types.
In above-mentioned steps 20) described in the step that is complementary of the running state that makes wind power generating set and the wind speed that records in advance, in actual applications, for example can comprise according to the above-mentioned wind speed that records in advance the propeller pitch angle of draught fan impeller is adjusted, thereby regulate the impeller loads of blower fan, and and then the step of regulating the real output of blower fan.Here, can obtain the function relation between the propeller pitch angle of a series of or continuous air speed value and draught fan impeller by experiment, and this function relation is pre-stored in the control system of wind power generating set, thereby after new air speed value of the every acquisition of control system, can draw the corresponding angle value of impeller propeller pitch angle immediately, then impeller be regulated accordingly.
Above-mentioned steps 30), specifically be meant: execution in step 10 continuously), thus the air speed value in draught fan impeller the place ahead is carried out continuous measurement, and above-mentioned continuous air speed value is sent to wind power generating set continuously; Correspondingly, step 20) in, the control wind power generating set is constantly adjusted the running state such as draught fan impeller propeller pitch angle etc. according to above-mentioned continuous air speed value, thereby makes the wind power generating set can be continually and steadily and outwards export electric energy efficiently.
By foregoing description as can be known, fan operation method provided by the invention can effectively improve the accuracy of measurement as the air speed value of blower fan Control Parameter, thereby make the fan operation parameter and accurately mate, and then improve the operation stability and the generating efficiency of blower fan through the actual wind speed of draught fan impeller position.
See also Fig. 3, be the schematic flow sheet of step 10) in another specific embodiment of fan operation method provided by the invention.Step 20 in the present embodiment) and step 30) with above-mentioned first kind of embodiment basic identical or similar, do not repeat them here.To the measuring wind speed process of step 10) in the present embodiment be elaborated below.
In the present embodiment, step 10) specifically comprises the steps: 101) to the measurement ripple of certain distance position, draught fan impeller the place ahead emission characteristic frequency; 102) receive the measurement ripple that reflects through airborne particle; 103) according to the principle of Doppler effect, the measurement wave frequency with above-mentioned measurement wave frequency that reflects and emission when initial compares and calculates, to draw the wind speed of certain distance position, draught fan impeller the place ahead.
Wherein, Doppler effect is meant when wave source and observer have relative movement, and the observer receives frequency and the phenomenon inequality that wave frequency and wave source send.In actual applications, above-mentioned measurement ripple can be laser or ultrasound, can decide according to factors such as precision needs and cost accounting and carry out measuring wind speed as for which kind of measurement ripple of concrete employing; Also can adopt two kinds to measure ripple simultaneously, and in the measurement result of the two, choose according to actual needs.
In addition, in order to obtain measuring wind speed data more accurately, step 103 in the present embodiment) before, also comprise to the measurement ripple that reflects and emission the step that the measurement ripple when initial amplifies.
In a preferred embodiment, in order further to improve the accuracy of fan operation control, the step 20 of fan operation method provided by the invention) specifically comprises following process: at interval certain make-up time, the wind speed that is recorded in advance in the running state of wind power generating set and the step 10) is complementary.
The reason of She Zhiing is like this, the position of carrying out measuring wind in the step 10) is usually located at the place ahead of draught fan impeller, tested air-flow flow to the draught fan impeller position from this measuring position also needs the regular hour, and therefore taking above-mentioned indemnifying measure is to be complementary with the wind speed of reality through draught fan impeller better for the running state that makes wind power generating set.Hence one can see that, and the above-mentioned make-up time should be substantially equal to air-flow to be flowed to the duration that place, draught fan impeller position needs by the wind speed that recorded from the position of measuring wind in advance.And, when step 10) is carried out measuring wind speed continuously, the above-mentioned make-up time should change along with measured change of wind velocity, and its numerical value roughly is inversely proportional to (promptly with the survey wind speed, wind speed is high more, make-up time is short more), thus continuous compensating operation is carried out in the operation control of wind power generating set.
In sum, fan operation method provided by the present invention can be in the fan operation process, and the actual wind speed when making the isoparametric running state of propeller pitch angle of draught fan impeller and air-flow through place, impeller position is accurately mated; And, when the wind speed that records continuously changes, the fan operation parameter is correspondingly adjusted, thereby wind energy is being made full use of simultaneously, can effectively reduce the fluctuation of blower fan output power and the impact that reduces the suffered wind load of draught fan impeller.Therefore, fan operation method provided by the present invention can effectively improve the generating efficiency and the operation stability of blower fan.
As another kind of technological scheme, the present invention also provides a kind of wind speed measuring device.This device can be used to measure the wind speed of air-flow before arriving draught fan impeller in advance in the fan operation method that the invention described above provides.
See also Fig. 4, be the structured flowchart of a specific embodiment of wind speed measuring device provided by the invention.As shown in the figure, wind speed measuring device provided by the invention comprises measurement ripple transmitter module, measures ripple receiving module, data analysis module and output module.Wherein, measure the ripple transmitter module in order to measurement ripple to certain distance position, draught fan impeller the place ahead emission characteristic frequency; Measure the ripple receiving module in order to receive the measurement ripple that reflects through airborne particle; Measurement wave frequency when initial compares and calculates data analysis module in order to the measurement wave frequency that will reflect and emission, to draw the wind speed of certain distance position, draught fan impeller the place ahead; Output module is in order to export to the wind speed that data analysis module drew at least one typhoon power generator group.
Seeing also Fig. 5, is the structured flowchart of a data analysis module in the specific embodiment.As shown in the figure, above-mentioned data analysis module further comprises amplifier, frequency comparator and calculator again.Wherein, amplifier amplifies in order to will measure the received measurement ripple of ripple receiving module, so that other modules are analyzed and processing such as calculating, improves the validity of final calculation result simultaneously; Measurement wave frequency when initial compares frequency comparator in order to the measurement wave frequency that will reflect and emission, to draw the variable quantity of comparing with the measurement wave frequency of launching when initial through the measurement wave frequency that reflects; Calculator is in order to calculate the wind speed of certain distance position, draught fan impeller the place ahead according to variable quantity.
Wherein, above-mentioned measurement ripple can adopt laser, also can adopt ultrasound.When adopting laser as the measurement ripple, correspondingly, measure the ripple transmitter module and specifically comprise generating laser, measure the concrete enclosed mass laser pickoff of ripple receiving module; When adopting ultrasound as the measurement ripple, correspondingly, measure the ripple transmitter module and specifically comprise ultrasonic transmitter, measure the concrete enclosed mass ultrasonic receiver of ripple receiving module.
Be example with laser as measuring ripple below, the working procedure of wind speed measuring device provided by the invention is specifically described.
At first, the particular location that wind speed setting is measured, a certain zone among a small circle that for example can 20 meters, selected distance draught fan impeller dead ahead is as the measuring position, and the generating laser and the laser pickoff of wind speed measuring device are all aimed at this position; Afterwards, start the generating laser and the laser pickoff of wind speed measuring device, almost when starting, laser pickoff can receive the laser that air particles reflected at place, above-mentioned measuring position; Simultaneously, can be provided with that a similar spectroscope etc. has the device of light separation function and make a part of laser at the transmitting terminal of generating laser initially is the reflected back laser pickoff in emission; Like this, on laser pickoff, can obtain simultaneously to launch when initial laser and via the laser of the air particles reflected back at place, measuring position, and the laser of above-mentioned two kinds of different frequencies is converted into electrical signal in laser pickoff, is transferred to each follow-up module then and handles; Next, amplifier amplifies above-said current signal in case stop signal distortion in subsequent treatment; Electrical signal through amplifying after handling is transferred to frequency comparator, the frequency of the laser institute electrical signal converted that frequency comparator can reflect to the frequency of above-mentioned laser institute electrical signal converted when coming spontaneous emission initial and from the measuring position compares, thereby obtain the variable quantity of the two frequency, also just obtained above-mentioned through air particles laser frequency that reflects and the variable quantity of launching initial laser frequency; According to the principle of Doppler effect, calculator just can accurately calculate the air speed value at place, measuring position according to the variable quantity of above-mentioned laser frequency; At last, by output module the wind speed that is drawn is exported to wind power generating set.When above-mentioned generating laser during, can realize continuous measurement to this position wind speed continuously to measuring position emission laser.
Be understood that easily to carry out the process of the process of measuring wind speed and above-mentioned laser-measurement basic identical or similar as measuring ripple to adopt ultrasound, thereby repeat no more.Certainly, can also adopt above-mentioned two kinds of different measurement ripples where necessary simultaneously, to reach specific measurement purpose.
In addition, above-mentioned transmission module can also can the air speed value that a typhoon speed measuring device is measured be transferred to many typhoons power generator group simultaneously only to the measured air speed value of typhoon power generator group transmission wind speed measuring device.Specifically can decide on practical factors such as the residing installation environment of each typhoon power generator group, distance and wind field distribution situations.
In actual applications, the wind speed measuring device that provides of the invention described above also should comprise the cabin bracket of the nacelle exterior that is installed on wind power generating set of being fixed; Perhaps, also comprise wind speed measuring device is fixedly installed near the wind power generating set ground ground support.
The structure of above-mentioned two kinds of supports can be used for reference the various mechanical structures in the technique for fixing commonly used, as long as guarantee under the wind-force effect of certain intensity, can keep wind speed measuring device agent set safety and firmly get final product.And the main distinction of the two is the difference on the function, be specially: when adopting cabin bracket that wind speed measuring device is installed on nacelle exterior, wind speed measuring device is gone off course with the cabin, and can measure the wind speed in paddle wheel plane dead ahead all the time, the measuring accuracy height, but cost also can correspondingly improve; In the time of near the employing ground support is installed on wind speed measuring device wind power generating set the ground, same typhoon speed measuring device just can provide air speed data for the many typhoons power generator group that is in this device certain distance scope simultaneously, but this moment is than the scheme that is installed on the cabin, its measuring accuracy can decrease, but can save a large amount of equipment costs.In sum, specifically adopt which kind of installation and metering system to take all factors into consideration according to the requirement of cost budgeting and measuring accuracy etc.
By foregoing description as can be known, wind speed measuring device provided by the invention is by such as the measurement ripple of laser and/or ultrasound etc. to predefined measuring wind speed position (for example, the position of draught fan impeller the place ahead certain distance) wind speed carries out accurate contactless measurement, thereby can effectively guarantee the accuracy of the wind speed of surveying, and can not be subjected to the influence of factors such as mechanical friction and environment.Therefore, wind speed measuring device provided by the invention can provide the wind speed parameter of precision for the operation control of wind power generating set, thereby when guaranteeing fan operation stability, effectively improves the generating efficiency of wind power generating set.
In addition, the present invention also provides a kind of wind power generating set, the fan operation method that its application has the invention described above to provide is moved control, thereby in its running, can obtain wind speed parameter accurately all the time, and the running state that becomes oar etc. such as impeller accurately be controlled according to above-mentioned wind speed parameter.Therefore, wind power generating set provided by the invention can keep higher operation stability, obtains higher generating efficiency simultaneously.
In addition, the present invention also provides another kind of wind power generating set, and it comprises the wind speed measuring device that the invention described above provides, in order to the wind speed in impeller the place ahead of measuring wind power generating set in advance and be transferred to the control system of wind power generating set.This wind power generating set can be regulated the running state of self accurately according to the wind speed of measuring in advance from above-mentioned wind speed measuring device in running, thereby has higher operation stability and generating efficiency equally.
Be understandable that the wind power generating set that the invention described above provides can also be used fan operation method that the invention described above provides and wind speed measuring device simultaneously and realize better operation control, to obtain even more ideal generating efficiency and operation stability.
Will also be appreciated that above mode of execution only is the illustrative embodiments that adopts for principle of the present invention is described, yet the present invention is not limited thereto.For those skilled in the art, without departing from the spirit and substance in the present invention, can make various modification and improvement, these modification and improvement also are considered as protection scope of the present invention.
Claims (16)
1. fan operation method is used to improve the generating efficiency of wind power generating set, it is characterized in that, comprises the steps:
10) measure the wind speed of air-flow before arriving draught fan impeller in advance;
20) running state of described wind power generating set and the described wind speed that records in advance are complementary, to improve the generating efficiency of described wind power generating set;
30) execution in step 10 continuously and repeatedly) and step 20), so that described wind power generating set continues operation efficiently.
2. fan operation method according to claim 1 is characterized in that, in described step 10), the described wind speed of measuring in advance is the wind speed of air-flow in certain distance position, described draught fan impeller the place ahead.
3. fan operation method according to claim 2 is characterized in that, described step 10) specifically comprises:
101) to the measurement ripple of certain distance position, described draught fan impeller the place ahead emission characteristic frequency;
102) receive the described measurement ripple that reflects through airborne particle;
103) according to the principle of Doppler effect, the measurement wave frequency with described measurement wave frequency that reflects and emission when initial compares and calculates, to draw the wind speed of certain distance position, described draught fan impeller the place ahead.
4. fan operation method according to claim 3 is characterized in that, described measurement ripple comprises laser or ultrasound.
5. fan operation method according to claim 3 is characterized in that, in the described step 10), in described step 103) also comprise the step that the measurement ripple when initial amplifies to described measurement ripple that reflects and emission before.
6. fan operation method according to claim 1 is characterized in that, described step 20) specifically comprise: certain at interval make-up time, the running state of described wind power generating set and the described wind speed that records in advance are complementary;
The described make-up time is substantially equal to air-flow according to the described wind speed that is recorded in advance, flows to the duration that place, draught fan impeller position needs from the position of measuring wind in advance; The described make-up time changes with described change of wind velocity, and is inversely proportional to described wind speed.
7. according to claim 1 or 6 described fan operation methods, it is characterized in that, in described step 20) in, the running state of described wind power generating set and step that the described wind speed that records in advance is complementary are specifically comprised: the propeller pitch angle of described draught fan impeller is adjusted into and the corresponding angle of current wind speed.
8. wind speed measuring device, be used in any described fan operation method of claim 1-7, measuring in advance the wind speed of air-flow before arriving draught fan impeller, it is characterized in that described wind speed measuring device comprises measures ripple transmitter module, measurement ripple receiving module, data analysis module and output module; Wherein
Described measurement ripple transmitter module is in order to the measurement ripple to certain distance position, described draught fan impeller the place ahead emission characteristic frequency;
Described measurement ripple receiving module is in order to receive the described measurement ripple that reflects through airborne particle;
Described data analysis module is in order to described measurement wave frequency that reflects and the measurement wave frequency of emission when initial are compared and calculate, to draw the wind speed of certain distance position, described draught fan impeller the place ahead;
Described output module is in order to export to the wind speed that described data analysis module drew at least one described wind power generating set.
9. wind speed measuring device according to claim 8 is characterized in that, described measurement ripple comprises laser; Correspondingly, described measurement ripple transmitter module comprises generating laser, described measurement ripple receiving module enclosed mass laser pickoff.
10. wind speed measuring device according to claim 8 is characterized in that, described measurement ripple comprises ultrasound; Correspondingly, described measurement ripple transmitter module comprises ultrasonic transmitter, described measurement ripple receiving module enclosed mass ultrasonic receiver.
11. wind speed measuring device according to claim 8 is characterized in that, described data analysis module comprises amplifier, frequency comparator and calculator, wherein
Described amplifier is in order to amplify the received measurement ripple of described measurement ripple receiving module;
Described frequency comparator is in order to comparing described measurement wave frequency that reflects and the measurement wave frequency of emission when initial, to draw the variable quantity of comparing with the measurement wave frequency of launching when initial through the described measurement wave frequency that reflects;
Described calculator is in order to calculate the wind speed of certain distance position, described draught fan impeller the place ahead according to described variable quantity.
12. wind speed measuring device according to claim 8 is characterized in that, also comprises cabin bracket, is used for described wind speed measuring device is fixed in the nacelle exterior of described wind power generating set.
13. wind speed measuring device according to claim 8 is characterized in that, also comprises ground support, in order to described wind speed measuring device is fixed near the ground the described wind power generating set.
14. any described wind speed measuring device is characterized in that according to Claim 8-13, described wind speed measuring device specifically calculates the wind speed of certain distance position, described draught fan impeller the place ahead according to the principle of Doppler effect.
15. a wind power generating set is characterized in that, any described fan operation method is moved control among the application rights requirement 1-7, to improve its generating efficiency.
16. wind power generating set, it is characterized in that, comprise any described wind speed measuring device among the claim 8-14, in order to the wind speed in impeller the place ahead of measuring described wind power generating set in advance, described wind power generating set is adjusted the running state of self according to the described wind speed of measuring in advance.
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| CN2011100891318A CN102200095A (en) | 2011-04-07 | 2011-04-07 | Fan operation method, wind speed measurement device and wind generator set |
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| CN102797629A (en) * | 2012-08-03 | 2012-11-28 | 国电联合动力技术有限公司 | Wind turbine generator control method, controller and control system of wind turbine generator |
| CN105785069A (en) * | 2016-03-04 | 2016-07-20 | 杭州赛尤企业管理咨询有限公司 | Wind measuring device with direction indication |
| CN109813929A (en) * | 2017-11-21 | 2019-05-28 | 北京金风科创风电设备有限公司 | Wind speed measuring method and system of wind driven generator |
| CN113803222A (en) * | 2021-09-22 | 2021-12-17 | 鲁志平 | Ultra-short-term prediction method and device for output power of wind generating set |
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| CN102797629A (en) * | 2012-08-03 | 2012-11-28 | 国电联合动力技术有限公司 | Wind turbine generator control method, controller and control system of wind turbine generator |
| CN102797629B (en) * | 2012-08-03 | 2014-05-14 | 国电联合动力技术有限公司 | Wind turbine generator control method, controller and control system of wind turbine generator |
| CN105785069A (en) * | 2016-03-04 | 2016-07-20 | 杭州赛尤企业管理咨询有限公司 | Wind measuring device with direction indication |
| CN109813929A (en) * | 2017-11-21 | 2019-05-28 | 北京金风科创风电设备有限公司 | Wind speed measuring method and system of wind driven generator |
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| CN113803222B (en) * | 2021-09-22 | 2023-01-03 | 鲁志平 | Ultra-short-term prediction method and device for output power of wind generating set |
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