CN102493918B - System and method for pre-warning and controlling gust load of wind power station - Google Patents
System and method for pre-warning and controlling gust load of wind power station Download PDFInfo
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- CN102493918B CN102493918B CN201110440051.2A CN201110440051A CN102493918B CN 102493918 B CN102493918 B CN 102493918B CN 201110440051 A CN201110440051 A CN 201110440051A CN 102493918 B CN102493918 B CN 102493918B
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Abstract
The invention provides a system and a method for pre-warning and controlling gust load of a wind power station. The system comprises at least one standby gust load pre-warning machine, and a wind power station level control unit; the at least one standby gust load pre-warning machine is at least one wind driven generator which is distributed at the periphery of the wind power station, and is positioned at the windage front position of the wind power station; and the wind power station level control unit acquires a wind angle of the wind power station, selects the current gust load pre-warning machine aiming at the wind angle from at least one gust load pre-warning machine according to the wind angle, acquires the characteristic value of the current gust according to the running state of the current gust load pre-warning machine and performs pitch regulation on all wind driven generators distributed in the wind power station according to the pitch regulation velocity corresponding to the characteristic value of the current gust, and changes the pitch angles of blades of all wind driven generators to ensure that all the wind driven generators run at rated power if the characteristic value of the current gust is more than a preset threshold value and less than the safety threshold value of the current gust load pre-warning machine.
Description
Technical field
The invention belongs to wind power generation field, relate to a kind of wind energy turbine set gust load pre-alarming control system and method.
Background technique
Wind load is the Main Load that the mechanical part of wind-driven generator bears, and the acute variation of wind speed can be brought very large load fluctuation to wind-driven generator.
Current MW class speed-changing oar-changing class wind-driven generator mainly reduces the impact of wind speed variation on load by changing the modes such as generator torque, change blade pitch angle.Conventionally in the situation that wind speed increase to surpass rated wind speed, increase blade pitch angle, reduce power and capture, thus the increase of limit load, and at wind speed hour, reduce blade pitch angle, increase power stage.Yet; such control mode can not play the object of control load and power, and too fast if wind speed changes, the power of wind-driven generator or rotating speed may exceed the scope of safe operation; wind-driven generator is understood starting protection shutdown mode conventionally, makes wind-driven generator dead halt.Wind-driven generator is shut down the fatigue load that also can increase mechanical part frequently, reduces fatigue life, and can cause the loss of generated energy.
The scheme that solves at present gust load mainly comprises two aspects: the one, and the design strength of mechanical part and the design margin of electric component of increase wind-driven generator, make wind-driven generator can resist the caused load change of fitful wind big ups and downs; Be to take Optimal Control Strategy on the other hand, adjust and control parameter to reduce the hysteresis of the change oar action of wind-driven generator, increase and become oar speed to respond fast the variation of extraneous wind speed.
Yet, increase the manufacture cost that strength of parts can greatly increase wind-driven generator; In addition, the control parameter of the change oar action of wind-driven generator is conventionally from the variation of rotating speed own or power, this is because cannot obtain in advance the change information of wind speed, therefore cause solving the hysteresis quality problem that becomes oar action, and the increase of change oar speed can increase the fatigue load of pitch-controlled system.
Therefore, need a kind of effective wind energy turbine set gust load pre-alarming control system and method.
Summary of the invention
In order to solve wind-driven generator in the problem of fitful wind condition apparatus for lower wind load acute variation, reduce manufacture and the maintenance cost of parts simultaneously as far as possible, the present invention makes all wind-driven generators of wind energy turbine set as a whole, proposes a kind of gust load early warning scheme of effective wind energy turbine set.
According to an aspect of the present invention, a kind of wind energy turbine set gust load pre-alarming control system is provided, described wind energy turbine set gust load pre-alarming control system comprises: at least one standby gust load early warning plane, described at least one standby gust load early warning plane is at least one wind-driven generator that is distributed in wind energy turbine set periphery, is positioned at the position in wind energy turbine set wind-engaging forward position, wind energy turbine set level control unit, obtain the wind angle of wind energy turbine set, and from described at least one standby gust load early warning plane, select the current gust load early warning plane for described wind angle according to described wind angle, according to the running state of current gust load early warning plane, obtain the eigenvalue of current fitful wind, if the eigenvalue of current fitful wind is greater than predetermined threshold and is less than the secure threshold of current gust load early warning plane, wind energy turbine set level control unit becomes oar operation according to change oar speed corresponding to the eigenvalue with current fitful wind to each wind-driven generator being arranged in wind energy turbine set, change the blade pitch angle of each wind-driven generator, each wind-driven generator is moved under rated power.
Wind energy turbine set level control unit can be from being arranged in the wind angle of the anemometer tower acquisition wind energy turbine set wind energy turbine set.
Wind energy turbine set level control unit can obtain the angle of vane that is arranged in each wind-driven generator in wind energy turbine set, calculates the mean value of angle of vane, the wind angle using the mean value calculating as wind energy turbine set.
The coordinate components of the seat in the plane point coordinates that wind energy turbine set level control unit can calculate described at least one standby gust load early warning plane in the wind angle direction of wind energy turbine set, and the selection alternative gust load early warning plane corresponding with maximum value in coordinate components is as current gust load early warning plane.
Wind energy turbine set level control unit can obtain the eigenvalue of current fitful wind according at least one in the blade pitch angle of current gust load early warning plane and output power.
The eigenvalue of current fitful wind can be that the unit time wind speed of current fitful wind changes amplitude.
When current gust load early warning plane moves below rated wind speed, wind energy turbine set level control unit can obtain according to the variation of the output power of current gust load early warning plane in the scheduled time unit time wind speed variation amplitude of current fitful wind.
When current gust load early warning plane moves more than rated wind speed, wind energy turbine set level control unit can obtain according to the variation at the blade pitch angle of current gust load early warning plane in the scheduled time unit time wind speed variation amplitude of current fitful wind.
If the unit time wind speed of current fitful wind changes the secure threshold that amplitude exceeds current gust load early warning plane; current gust load early warning plane is shut down; and alarm signal is sent to wind energy turbine set level control unit, and each wind-driven generator that wind energy turbine set level control unit is controlled in wind energy turbine set is shut down.
According to a further aspect in the invention, a kind of wind energy turbine set gust load pre-warning and control method is provided, in wind energy turbine set, be furnished with a plurality of wind-driven generators, at least one wind-driven generator that is distributed in the position that is positioned at wind energy turbine set wind-engaging forward position of wind energy turbine set periphery is used as at least one standby gust load early warning plane, and described method comprises: the wind angle that obtains wind energy turbine set; According to described wind angle, from described at least one standby gust load early warning plane, select the current gust load early warning plane for described wind angle; According to the running state of current gust load early warning plane, obtain the eigenvalue of current fitful wind; If the eigenvalue of current fitful wind is greater than predetermined threshold and is less than the secure threshold of current gust load early warning plane, according to change oar speed corresponding to the eigenvalue with current fitful wind, each wind-driven generator being arranged in wind energy turbine set is become to oar operation, change the blade pitch angle of each wind-driven generator, each wind-driven generator is moved under rated power.
The step of obtaining the wind angle of wind energy turbine set can comprise: from being arranged in the wind angle of the anemometer tower acquisition wind energy turbine set wind energy turbine set.
The step of obtaining the wind angle of wind energy turbine set can comprise: obtain the angle of vane that is arranged in each wind-driven generator in wind energy turbine set, calculate the mean value of angle of vane, the wind angle using the mean value calculating as wind energy turbine set.
Select the step of current gust load early warning plane to comprise: the coordinate components of the seat in the plane point coordinates that calculates described at least one standby gust load early warning plane in the wind angle direction of wind energy turbine set, and the selection alternative gust load early warning plane corresponding with maximum value in coordinate components is as current gust load early warning plane.
Can obtain the eigenvalue of current fitful wind according at least one in the blade pitch angle of current gust load early warning plane and output power.
The eigenvalue of current fitful wind can be that the unit time wind speed of current fitful wind changes amplitude.
When current gust load early warning plane moves below rated wind speed, can obtain according to the variation of the output power of current gust load early warning plane in the scheduled time unit time wind speed variation amplitude of current fitful wind.
When current gust load early warning plane moves more than rated wind speed, can obtain according to the variation at the blade pitch angle of current gust load early warning plane in the scheduled time unit time wind speed variation amplitude of current fitful wind.
If the unit time wind speed of current fitful wind changes the secure threshold that amplitude exceeds current gust load early warning plane, current gust load early warning plane is shut down, and each wind-driven generator of controlling in wind energy turbine set is shut down.According to the present invention, wind energy turbine set gust load pre-alarming control system and method have been applied gust load early warning plane scheme, can obtain in advance fitful wind information, reduce the gust load of other wind-driven generator in wind energy turbine set; By obtaining in advance fitful wind information control wind-driven generator, move, reduce to shut down number of times, increase generating dutation, promote the availability of wind energy turbine set.
Accompanying drawing explanation
In conjunction with the drawings, from the description of the following examples, the present invention these and/or other side and advantage will become clear, and are easier to understand, wherein:
Fig. 1 is the block diagram of wind energy turbine set gust load pre-alarming control system according to an exemplary embodiment of the present invention;
Fig. 2 obtains the schematic diagram of the eigenvalue of current fitful wind according to an exemplary embodiment of the present invention according to the running state of current gust load early warning plane;
Fig. 3 is the schematic diagram that the change oar of wind-driven generator is controlled;
Fig. 4 is the flow chart of wind energy turbine set gust load pre-warning and control method according to an exemplary embodiment of the present invention.
Embodiment
Basic conception of the present invention is, wind-driven generators all in wind energy turbine set is done as a whole, using peripheral at least one wind-driven generator distributing of wind energy turbine set as gust load early warning plane, by gust load early warning plane, the information of fitful wind is passed to wind energy turbine set level control unit, then wind energy turbine set level control unit in advance sends control signal to the control unit of other wind-driven generator in wind energy turbine set, make in wind energy turbine set each wind-driven generator of wind direction under gust load early warning plane become accordingly oar operation, reduce to greatest extent the wind-induced load fluctuation of battle array, reduce to shut down number of times.
Fig. 1 is the block diagram of wind energy turbine set gust load pre-alarming control system according to an exemplary embodiment of the present invention.
With reference to Fig. 1, wind energy turbine set gust load pre-alarming control system comprises at least one (that is, one or more) standby gust load early warning plane 1 and wind energy turbine set level control unit 2.Described at least one standby gust load early warning plane can be at least one wind-driven generator that is distributed in wind energy turbine set periphery.Standby gust load early warning plane is positioned at the position in wind energy turbine set wind-engaging forward position.Wind energy turbine set has the prevailing wind direction of predetermined quantity conventionally, and prevailing wind direction changes with seasonal variations conventionally.Can at least one standby gust load early warning plane be set for each prevailing wind direction, when prevailing wind direction changes, wind energy turbine set level control unit 2 can be selected corresponding gust load early warning plane automatically, carries out gust load forewarn thus.Wind energy turbine set level control unit 2 is connected to each wind-driven generator being arranged in wind energy turbine set.
Wind energy turbine set level control unit 2 obtains the wind angle of wind energy turbine set, and from described at least one standby gust load early warning plane, selects the current gust load early warning plane for described wind angle according to described wind angle.Wind energy turbine set level control unit 2 can be from being arranged on the wind angle of the anemometer tower acquisition wind energy turbine set wind energy turbine set.
In addition, in the situation that anemometer tower not being set, wind energy turbine set level control unit 2 can be determined according to the angle of vane that is arranged in each wind-driven generator in wind energy turbine set the wind angle of wind field.
In false wind electric field, be provided with n wind-driven generator, can calculate according to mode below the wind angle of wind energy turbine set: obtain the angle of vane of each wind-driven generator, be made as
calculate the mean value of angle of vane
by the mean value calculating
wind angle θ as wind energy turbine set.
Suppose to be provided with k standby gust load early warning plane in wind energy turbine set, the seat in the plane point coordinates of each standby gust load early warning plane in wind energy turbine set is respectively: (x
1, y
1), (x
2, y
2) ..., (x
k, y
k), the coordinate components of the seat in the plane point coordinates that can calculate each standby gust load early warning plane in the current wind angle direction of wind energy turbine set: x
1* cos θ+y
1* sin θ, x
2* cos θ+y
2* sin θ ..., x
k* cos θ+y
k* sin θ, relatively the size of these coordinate components, selects the alternative gust load early warning plane corresponding with maximum value in coordinate components as current gust load early warning plane.
When fitful wind occurs, wind energy turbine set level control unit 2 obtains the eigenvalue of current fitful wind according to the running state of current gust load early warning plane, according to the eigenvalue of current fitful wind, each wind-driven generator in wind energy turbine set is carried out to gust load forewarn.Particularly, if the eigenvalue of current fitful wind is greater than predetermined threshold, the change oar speed that wind energy turbine set level control unit 2 can be corresponding according to the eigenvalue with current fitful wind becomes oar operation to each wind-driven generator being arranged in wind energy turbine set, change the blade pitch angle of each wind-driven generator, can reduce the gust load of wind-driven generator, each wind-driven generator is moved under rated power.
The blade pitch angle of current gust load early warning plane and the isoparametric variation of output power can reflect the feature of fitful wind.Therefore, can obtain the eigenvalue of current fitful wind according at least one in the blade pitch angle of current gust load early warning plane and output power.
The eigenvalue of fitful wind comprises that the wind speed of fitful wind changes the wind speed transformation period of amplitude and fitful wind, the Strength Changes size and the wind speed that characterize respectively fitful wind change speed, for example, fitful wind changed to 20 meter per seconds from 10 meter per seconds in 10 seconds, it is 20 meter per second=10, meter per second-10 meter per seconds that wind speed changes amplitude, and wind speed transformation period is 10 seconds; Otherwise fitful wind changed to 10 meter per seconds from 20 meter per seconds in 10 seconds, it is 10 meter per second-20 meter per second=-10 meter per seconds that wind speed changes amplitude, and wind speed transformation period is 10 seconds.The unit time wind speed that can calculate fitful wind according to the wind speed transformation period of the wind speed variation amplitude of fitful wind and fitful wind changes amplitude (that is, wind speed changes amplitude divided by wind speed transformation period).Therefore, the unit time wind speed of fitful wind changes the eigenvalue that amplitude can be used as fitful wind.When current gust load early warning plane moves below rated wind speed, (the unit time wind speed that can characterize with the variation of the output power of current gust load early warning plane in the scheduled time fitful wind changes amplitude, can obtain according to the variation of the output power of current gust load early warning plane in the scheduled time unit time wind speed variation amplitude of fitful wind), the unit time wind speed of fitful wind changes amplitude greatly, and the fluctuation of the output power of current gust load early warning plane is also larger.When current gust load early warning plane moves more than rated wind speed, (the unit time wind speed that can characterize with the variation at the blade pitch angle of current gust load early warning plane in the scheduled time fitful wind changes amplitude, can obtain according to the variation at the blade pitch angle of current gust load early warning plane in the scheduled time unit time wind speed variation amplitude of fitful wind), the unit time wind speed of fitful wind changes amplitude greatly, and the variation at the blade pitch angle of current gust load early warning plane is also larger.By above-mentioned relation, just can obtain the eigenvalue of fitful wind, Fig. 2 shows the schematic diagram that obtains the eigenvalue of current fitful wind according to the running state of current gust load early warning plane.
Under normal circumstances, the blade rotational speed of current gust load early warning plane is controlled in safety range.When the unit time of current fitful wind wind speed variation amplitude exceeds the secure threshold of current gust load early warning plane, (secure threshold is greater than foregoing predetermined threshold, show that gustiness changes very fast), the change oar unit of current gust load early warning plane and torque control unit possibly cannot respond in time, and the blade rotational speed of current gust load early warning plane can surpass the scope of normal operation.Therefore, in this case, current gust load early warning plane starts dead halt pattern and shuts down.Now, current gust load early warning plane can send to alarm signal wind energy turbine set level control unit 2, and each wind-driven generator that wind energy turbine set level control unit 2 is controlled in wind energy turbine set is shut down, in a safe condition to guarantee each wind-driven generator.
Different fitful wind eigenvalue (the unit time wind speed of current fitful wind changes amplitude) can the different change oar speed control of correspondence.When fitful wind eigenvalue is less than predetermined threshold, wind energy turbine set level control unit 2 does not carry out control operation to each wind-driven generator.As mentioned above, if the eigenvalue of current fitful wind is greater than predetermined threshold and is less than the secure threshold of current gust load early warning plane, the change oar speed that wind energy turbine set level control unit 2 can be corresponding according to the eigenvalue with current fitful wind becomes oar operation to each wind-driven generator being arranged in wind energy turbine set, change the blade pitch angle of each wind-driven generator, each wind-driven generator is moved under rated power.For example, when fitful wind eigenvalue is greater than predetermined threshold and is less than the first limit value of setting, wind energy turbine set level control unit 2 is controlled each wind-driven generator according to the first change oar speed; When fitful wind eigenvalue is greater than the first limit value of setting and is less than the second limit value of setting, wind energy turbine set level control unit 2 is controlled each wind-driven generator according to the second change oar speed, and the rest may be inferred.That is, fitful wind eigenvalue is larger, becomes oar speed also larger, and blade is become oar quickly.
Fig. 3 is the schematic diagram that the change oar of wind-driven generator is controlled.Each blade (blade) of wind-driven generator and wind wheel plane of rotation (the inswept plane of blade shank during wind wheel rotation) shape at an angle, is called established angle, and also referred to as propeller pitch angle, as shown in Figure 3, wherein, hatching partly represents the cross section of blade.When blade pitch angle is 0 ° of left and right, power coefficient is relatively maximum, and this angular range is called generating state blade frequent movement angular range.If blade pitch angle increases, power coefficient will obviously reduce.When propeller pitch angle is 90 ° of left and right, blade is static, and this angular range is called shutdown angular range.The change oar unit of wind-driven generator is by changing blade pitch angle, when wind speed is followed the trail of maximum wind speed to absorb as far as possible wind energy during lower than rated wind speed, when wind speed is during higher than rated wind speed, become oar unit by adjusting blade pitch angle, change the effect of air-flow to blade, can reduce the gust load of wind-driven generator, wind-driven generator is moved under rated power.
Each wind-driven generator in wind energy turbine set is apart far away, and spacing each other can reach hundreds of rice conventionally.Therefore, arrive the seat in the plane point of other each wind-driven generator at fitful wind before, wind energy turbine set level control unit 2 has sent control command in advance according to the eigenvalue of current fitful wind, problem with regard to having avoided the control unit control action of wind-driven generator self to lag behind, reaches the object that reduces wind-driven generator gust load like this.
The following describes according to wind energy turbine set gust load pre-warning and control method of the present invention, Fig. 4 is the flow chart of wind energy turbine set gust load pre-warning and control method according to an exemplary embodiment of the present invention.
As mentioned above, be furnished with a plurality of wind-driven generators in wind energy turbine set, at least one wind-driven generator that is distributed in the position that is positioned at wind energy turbine set wind-engaging forward position of wind energy turbine set periphery is used as at least one standby gust load early warning plane.
With reference to Fig. 4, in step 401, obtain the wind angle of wind energy turbine set.Can be from being arranged in the wind angle of the anemometer tower acquisition wind energy turbine set wind energy turbine set.Or, can obtain the angle of vane that is arranged in each wind-driven generator in wind energy turbine set, calculate the mean value of angle of vane, the wind angle using the mean value calculating as wind energy turbine set.
In step 402, according to described wind angle, from described at least one standby gust load early warning plane, select the current gust load early warning plane for described wind angle.
The coordinate components of the seat in the plane point coordinates that can calculate described at least one standby gust load early warning plane in the wind angle direction of wind energy turbine set, and the selection alternative gust load early warning plane corresponding with maximum value in coordinate components is as current gust load early warning plane.
In step 403, according to the running state of current gust load early warning plane, obtain the eigenvalue of current fitful wind.Can obtain the eigenvalue of current fitful wind according at least one in the blade pitch angle of current gust load early warning plane and output power.The eigenvalue of current fitful wind can be that the unit time wind speed of current fitful wind changes amplitude.When current gust load early warning plane moves below rated wind speed, can obtain according to the variation of the output power of current gust load early warning plane in the scheduled time unit time wind speed variation amplitude of current fitful wind.When current gust load early warning plane moves more than rated wind speed, can obtain according to the variation at the blade pitch angle of current gust load early warning plane in the scheduled time unit time wind speed variation amplitude of current fitful wind.
In step 404, whether the eigenvalue of determining current fitful wind is greater than predetermined threshold and is less than the secure threshold of current gust load early warning plane.
If the eigenvalue of current fitful wind is greater than predetermined threshold and is less than the secure threshold of current gust load early warning plane, in step 405, the change oar speed corresponding according to the eigenvalue with current fitful wind becomes oar operation to each wind-driven generator being arranged in wind energy turbine set, change the blade pitch angle of each wind-driven generator, each wind-driven generator is moved under rated power.
If the definite result in step 404 is no, in step 405, determine whether the eigenvalue of current fitful wind is less than predetermined threshold.
If the eigenvalue of current fitful wind is less than predetermined threshold, turn back to step 403.
If the definite result in step 406 is no; show that the eigenvalue of current fitful wind is greater than the secure threshold of current gust load early warning plane; now; in step 407; current gust load early warning plane is shut down; and each wind-driven generator in wind energy turbine set is controlled as shutdown, in a safe condition to guarantee each wind-driven generator.
Due to the forward position of gust load early warning plane in the direction of the wind comes from, therefore need to select larger mechanical part and the larger electric component of capacity of bearing capacity for gust load early warning plane.In addition, without each wind-driven generator in wind energy turbine set, increase part design intensity and electric component design margin, greatly reduce like this design cost and the manufacture cost of wind-driven generator.In addition, gust load early warning plane provides fitful wind early warning to other wind-driven generator in wind energy turbine set, not only obtained in advance the wind speed change information of wind energy turbine set, solve the change oar action hysteresis quality problem in controlling of wind energy turbine set in the past, also efficiently solved the problem increasing owing to becoming change oar unit fatigue load that the increase of oar speed causes.
According to the present invention, wind energy turbine set gust load pre-alarming control system and method have been applied gust load early warning plane scheme, can obtain in advance fitful wind information, reduce the gust load of other wind-driven generator in wind energy turbine set; By obtaining in advance fitful wind information control wind-driven generator, move, reduce to shut down number of times, increase generating dutation, promote the availability of wind energy turbine set; The invention process is simple, can utilize the supervisory system of existing wind energy turbine set level, by simple modifications, just can realize the present invention; The present invention can significantly reduce gust load, reduces component costs, and input-output ratio is high.
Although the present invention is described in detail and shows with reference to its exemplary embodiment, but will be understood by those skilled in the art that, in the situation that do not depart from the spirit and scope of the present invention that are defined by the claims, can carry out to it various changes of form and details.
Claims (10)
1. a wind energy turbine set gust load pre-alarming control system, comprising:
At least one standby gust load early warning plane, described at least one standby gust load early warning plane is at least one wind-driven generator that is distributed in wind energy turbine set periphery, is positioned at the position in wind energy turbine set wind-engaging forward position;
Wind energy turbine set level control unit, obtain the wind angle of wind energy turbine set, and from described at least one standby gust load early warning plane, select the current gust load early warning plane for described wind angle according to described wind angle, according to the running state of current gust load early warning plane, obtain the eigenvalue of current fitful wind
Wherein, if the eigenvalue of current fitful wind is greater than predetermined threshold and is less than the secure threshold of current gust load early warning plane, wind energy turbine set level control unit becomes oar operation according to change oar speed corresponding to the eigenvalue with current fitful wind to each wind-driven generator being arranged in wind energy turbine set, change the blade pitch angle of each wind-driven generator, each wind-driven generator is moved under rated power
Wherein, wind energy turbine set level control unit obtains the eigenvalue of current fitful wind according at least one in the blade pitch angle of current gust load early warning plane and output power, and the eigenvalue of current fitful wind is that the unit time wind speed of current fitful wind changes amplitude,
Wherein, when current gust load early warning plane moves below rated wind speed, the unit time wind speed that wind energy turbine set level control unit obtains current fitful wind according to the variation of the output power of current gust load early warning plane in the scheduled time changes amplitude; When current gust load early warning plane moves more than rated wind speed, the unit time wind speed that wind energy turbine set level control unit obtains current fitful wind according to the variation at the blade pitch angle of current gust load early warning plane in the scheduled time changes amplitude.
2. wind energy turbine set gust load pre-alarming control system according to claim 1, wherein, wind energy turbine set level control unit obtains the wind angle of wind energy turbine set from being arranged in anemometer tower wind energy turbine set.
3. wind energy turbine set gust load pre-alarming control system according to claim 1, wherein, wind energy turbine set level control unit obtains the angle of vane that is arranged in each wind-driven generator in wind energy turbine set, calculates the mean value of angle of vane, the wind angle using the mean value calculating as wind energy turbine set.
4. according to the wind energy turbine set gust load pre-alarming control system described in claim 2 or 3, wherein, the coordinate components of the seat in the plane point coordinates that wind energy turbine set level control unit calculates described at least one standby gust load early warning plane in the wind angle direction of wind energy turbine set, and the selection alternative gust load early warning plane corresponding with maximum value in coordinate components is as current gust load early warning plane.
5. wind energy turbine set gust load pre-alarming control system according to claim 1; wherein; if the unit time wind speed of current fitful wind changes the secure threshold that amplitude exceeds current gust load early warning plane; current gust load early warning plane is shut down; and alarm signal is sent to wind energy turbine set level control unit, and each wind-driven generator that wind energy turbine set level control unit is controlled in wind energy turbine set is shut down.
6. a wind energy turbine set gust load pre-warning and control method, in wind energy turbine set, be furnished with a plurality of wind-driven generators, at least one wind-driven generator that is distributed in the position that is positioned at wind energy turbine set wind-engaging forward position of wind energy turbine set periphery is used as at least one standby gust load early warning plane, and described method comprises:
Obtain the wind angle of wind energy turbine set;
According to described wind angle, from described at least one standby gust load early warning plane, select the current gust load early warning plane for described wind angle;
According to the running state of current gust load early warning plane, obtain the eigenvalue of current fitful wind;
If the eigenvalue of current fitful wind is greater than predetermined threshold and is less than the secure threshold of current gust load early warning plane, according to change oar speed corresponding to the eigenvalue with current fitful wind, each wind-driven generator being arranged in wind energy turbine set is become to oar operation, change the blade pitch angle of each wind-driven generator, each wind-driven generator is moved under rated power
Wherein, according at least one in the blade pitch angle of current gust load early warning plane and output power, obtain the eigenvalue of current fitful wind, the eigenvalue of current fitful wind is that the unit time wind speed of current fitful wind changes amplitude,
Wherein, when current gust load early warning plane moves below rated wind speed, the unit time wind speed that obtains current fitful wind according to the variation of the output power of current gust load early warning plane in the scheduled time changes amplitude; When current gust load early warning plane moves more than rated wind speed, the unit time wind speed that obtains current fitful wind according to the variation at the blade pitch angle of current gust load early warning plane in the scheduled time changes amplitude.
7. wind energy turbine set gust load pre-warning and control method according to claim 6, wherein, the step of obtaining the wind angle of wind energy turbine set comprises: the wind angle that obtains wind energy turbine set from being arranged in anemometer tower wind energy turbine set.
8. wind energy turbine set gust load pre-warning and control method according to claim 6, wherein, the step of obtaining the wind angle of wind energy turbine set comprises: obtain the angle of vane that is arranged in each wind-driven generator in wind energy turbine set, calculate the mean value of angle of vane, the wind angle using the mean value calculating as wind energy turbine set.
9. according to the wind energy turbine set gust load pre-warning and control method described in claim 7 or 8, wherein, select the step of current gust load early warning plane to comprise: the coordinate components of the seat in the plane point coordinates that calculates described at least one standby gust load early warning plane in the wind angle direction of wind energy turbine set, and the selection alternative gust load early warning plane corresponding with maximum value in coordinate components is as current gust load early warning plane.
10. wind energy turbine set gust load pre-warning and control method according to claim 6; wherein; if the unit time wind speed of current fitful wind changes the secure threshold that amplitude exceeds current gust load early warning plane; current gust load early warning plane is shut down, and each wind-driven generator of controlling in wind energy turbine set is shut down.
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| CN201110440051.2A CN102493918B (en) | 2011-12-23 | 2011-12-23 | System and method for pre-warning and controlling gust load of wind power station |
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| CN201110440051.2A CN102493918B (en) | 2011-12-23 | 2011-12-23 | System and method for pre-warning and controlling gust load of wind power station |
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| CN102493918B true CN102493918B (en) | 2014-03-26 |
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| WO2014068162A1 (en) * | 2012-10-31 | 2014-05-08 | Hispavista Labs, A.I.E. | Method for calculating and correcting the angle of attack in a wind turbine farm |
| CN103321840B (en) * | 2013-06-09 | 2015-08-12 | 广东明阳风电产业集团有限公司 | A kind of Anti-typhoon control method for wind power plant |
| CN106194597A (en) * | 2016-07-06 | 2016-12-07 | 青岛华创风能有限公司 | Strong wind safe early warning control method in the looped network of a kind of wind power generating set |
| CN107762726B (en) * | 2016-08-15 | 2019-04-02 | 北京金风科创风电设备有限公司 | Wind-driven generator cluster pitch control method and system |
| CN107762729B (en) * | 2016-08-19 | 2019-06-04 | 北京金风科创风电设备有限公司 | Yaw control method and control system for wind power plant |
| CN107781105B (en) * | 2016-08-31 | 2019-05-07 | 北京天诚同创电气有限公司 | The pitch control method and device of wind-driven generator |
| DE102016124630A1 (en) * | 2016-12-16 | 2018-06-21 | Wobben Properties Gmbh | Method for controlling a wind energy plant |
| US10570883B2 (en) * | 2017-12-22 | 2020-02-25 | General Electric Company | System and method for protecting wind turbines during wind gusts |
| CN110399994B (en) * | 2018-04-17 | 2022-11-01 | 江苏金风科技有限公司 | Typhoon early warning method and device for wind power plant |
| CN111396249B (en) * | 2020-03-31 | 2022-08-30 | 新疆金风科技股份有限公司 | Method and device for reducing tower load under gust wind condition |
| CN111997831B (en) * | 2020-09-01 | 2021-11-19 | 新疆金风科技股份有限公司 | Load control method and device of wind turbine generator |
| CN112185038B (en) * | 2020-09-29 | 2024-03-08 | 杭州郎稳智能科技有限公司 | Safe recovery power generation system |
| CN114198267B (en) * | 2021-11-08 | 2023-11-03 | 华能大理风力发电有限公司 | Operation control method and system for wind generating set with extreme gusts |
| CN114689215B (en) * | 2022-03-16 | 2024-02-23 | 国网甘肃省电力公司电力科学研究院 | Wind generating set blade connecting bolt fracture monitoring method |
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| DE10137272A1 (en) * | 2001-07-31 | 2003-02-27 | Aloys Wobben | Early warning system for wind turbines |
| DE102004060943A1 (en) * | 2004-12-17 | 2006-07-06 | Repower Systems Ag | Wind farm power control and method |
| US20070124025A1 (en) * | 2005-11-29 | 2007-05-31 | General Electric Company | Windpark turbine control system and method for wind condition estimation and performance optimization |
| CN100460669C (en) * | 2007-02-08 | 2009-02-11 | 上海交通大学 | Wind vane and output power based wind mill leeway control method |
| US7999406B2 (en) * | 2008-02-29 | 2011-08-16 | General Electric Company | Wind turbine plant high wind derating control |
| EP2148225B1 (en) * | 2008-07-22 | 2016-11-02 | Siemens Aktiengesellschaft | Method and arrangement for the forecast of wind-resources |
| DE102009030886A1 (en) * | 2009-06-29 | 2010-12-30 | Robert Bosch Gmbh | Wind turbine with a variety of wind energy devices and methods for controlling the wind turbine |
| CN102251926B (en) * | 2010-07-15 | 2013-09-25 | 大唐南京自动化有限公司 | Turbulence suppression method of wind driven generator |
| CN102168651A (en) * | 2011-04-07 | 2011-08-31 | 北京金风科创风电设备有限公司 | Fan operation method, wind measuring device and wind generating set |
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