CN103216383B - Control system and control method for wind generating set - Google Patents
Control system and control method for wind generating set Download PDFInfo
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- CN103216383B CN103216383B CN201310135357.6A CN201310135357A CN103216383B CN 103216383 B CN103216383 B CN 103216383B CN 201310135357 A CN201310135357 A CN 201310135357A CN 103216383 B CN103216383 B CN 103216383B
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
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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
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- 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
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Abstract
The invention discloses a control system and a control method for a wind generating set. The wind generating set control system comprises: the anemoscope is used for obtaining wind speed data by measuring the wind speed at the position of the wind generating set; an arbitrator receiving wind speed data from the anemometer, performing wind speed prediction based on the wind speed data, and enabling the normal mode controller or the emergency mode controller based on a result of the wind speed prediction, a rotational speed of an impeller of the wind turbine generator system, an output torque, and an output power; the normal mode controller is used for controlling the impeller rotating speed, the output torque and the output power of the wind generating set; the emergency mode controller firstly limits the rotating speed of the impeller to be within a safe range, and then controls the output power of the wind generating set to be maximum. The control system and the control method of the wind generating set do not increase hardware investment, do not lose the operating power of the wind generating set, and can ensure stable operation of the wind generating set.
Description
Technical field
The present invention relates to a kind of control system and controlling method of wind power generating set, more particularly, relate to a kind of control system and the controlling method that can control wind power generating set stable operation and improve wind power generating set operational efficiency.
Background technique
Along with the development of technology, the concern of renewable energy sources and utilize degree day by day to increase, wherein, wind-power electricity generation is a kind of relatively ripe energy technology that developed.Wind-power electricity generation requires there is stronger adaptive capacity to environment, and the technology of therefore controlling wind power generating set stable operation receives publicity day by day.
Publication number is that the Chinese invention patent application of CN102011692A discloses a kind of controlling method in the stable operation of different turbulent flow landform leeward group of motors.For different turbulent flow landform, this controlling method adopts in the different wind direction turbulence intensities lower powered method that declines, and concrete grammar is as follows: according to the meteorological data of wind-driven generator ground address to be installed, determine the turbulent flow distributing position centered by wind-powered electricity generation unit; At wind-powered electricity generation unit, wind direction and wind speed wind finding device are installed, and measuring wind speed in real time and wind direction; According to the wind direction signals of current wind transducer, in the time that wind direction is positioned at all the other angular ranges, control blower fan according to Power operation corresponding to current wind speed; When wind direction is positioned at the angular range that turbulence intensity is high, control wind power generating set with preset proportion coefficient Power operation doubly, scaling factor is the decimal between 0-1.This controlling method is carried out segmentation control according to different turbulent flow landform, has reduced the cost of wind-powered electricity generation unit.
From principle outwardly, the controlling method that CN102011692A proposes is feasible.But the turbulent flow of wind is not only relevant with landform, also has time variation and randomness, such as mountain region wind energy turbine set, must carry out testing each azimuthal turbulence intensity in advance for every unit, there is blind control or mistake control otherwise will cause to control; Even so, add diurnal variation, monthly variation, season crack of wind etc., this controlling method workload is huge, poor operability.In addition, this controlling method, mainly from design angle, reduces unit operation load by reducing Power operation with this under strong turbulence condition, reduces unit cost, improves the Economy of unit design, and does not consider the actual conditions of unit operation.
Publication number is that the Chinese invention patent application of CN102200095A discloses a kind of fan operation method, described fan operation method adopts special wind finding device, the object that meets stable operation of unit by wind speed is participated in to unit operation control completely, concrete steps are as follows: (1) measures the wind speed of air-flow arrival draught fan impeller in advance; (2) wind speed that wind power generating set running state and step (1) is measured in advance matches; (3) continuously and execution (1) and (2) of going round and beginning again, wind-powered electricity generation unit is continued and move efficiently.The defect of described fan operation method is: (1) increases hardware input, and especially special radar wind system cost is more expensive; (2) running state of definite unit means the necessary current wind regime operate power of sacrificing in advance, and unit overall operation efficiency is declined, and this will improve unit operation stability.
The control strategy supposition of the wind power generating set of prior art as above is carried out under stable state microvariations, and disturbance amplitude change rate is 2-3m/s
2, wind speed pace of change is slow.This and actual conditions are not inconsistent.Many on-the-spot wind regime change very fast, much under rated wind speed, change 5-8m/s
2what is more, and acceptable operating point is trans-regional; can in 3-5s, change near cut-out wind speed from incision wind speed; under this wind regime, be difficult to make wind power generating set stable operation; wind power generating set, owing to controlling output and strong jamming (strong gusts of wind) step-out, can cause wind power generating set to be overrun or the high disorderly closedown of active power.For this situation; conventionally the method for taking in prior art has the overspeed protection value of increase and reduces power of the assembling unit operation, or adopts and ensure that the power of the assembling unit tries one's best in constant situation, increases given moment of torsion; reduce running speed, and close wave filter and strive for becoming in advance the measures such as oar time.But still occur that unit is overrun and the high fault of active power after adopting these methods.Therefore, these methods can not solve the problem of stable operation of unit at all.The unstable one side of unit is that unit rate of fault is high to user's direct feeling, also reduces on the other hand working time and the generated energy of unit.
Summary of the invention
The object of the present invention is to provide a kind of inertia with wind-driven generator pitch-controlled system of the wind power generating set of the energy in support, to reduce rate of fault and the cost of pitch-controlled system.
According to an aspect of the present invention, provide a kind of wind turbine control system, having comprised: anemoscope, has obtained air speed data by the wind speed of measuring wind power generating set present position place; Moderator, receives air speed data from anemoscope, carries out forecasting wind speed based on air speed data, and wheel speed, output torque and output power based on forecasting wind speed result, wind power generating set enabled normal mode controller or contingency mode controller; Normal mode controller, wheel speed, output torque and output power to wind power generating set are controlled; Contingency mode controller, within first wheel speed being restricted to safety range, the output power of controlling subsequently wind power generating set reaches maximum value.
Selectively, anemoscope be arranged on wind power generating set cabin directly over, moderator, normal mode controller and contingency mode controller are arranged in the cabin of wind power generating set.
Selectively, moderator comprises the low-pass filter unit for the air speed data receiving from anemoscope is carried out to filtering.
Selectively, moderator from air speed data, choose a time period air speed data queue Vn-k ..., Vn-1, Vn, from air speed data queue, choose maximum value Vmax, minimum value Vmin and record corresponding moment I and J, calculate m=(Vmax-Vmin)/(I-J), if | m|>=|f| and | I-J|>p, the wind speed pre-warning mark that suddenlys change is set to very, otherwise wind speed suddenlys change, pre-warning mark is set to vacation, wherein, n and k are positive integer, n is more than or equal to 3 and be greater than k, and f and p are the threshold value setting in advance.
Selectively, if Vmax and Vmin are not unique, moderator record | the I of I-J| minimum and J.
Selectively, moderator adopts first in first out rolling strategy to carry out the queue of real-time update air speed data, and air speed data queue based on upgrading redefines the true and false of wind speed sudden change pre-warning mark.
Selectively, when wind speed sudden change pre-warning mark is true time, moderator calculates the variance ratio of wheel speed, output torque and the output power of wind power generating set, if at least one in the variance ratio of wheel speed, output torque and the output power calculated is greater than predetermined threshold, moderator cuts off the control of normal mode controller to wind power generating set, and drops into contingency mode controller wind power generating set is controlled.
Selectively, moderator also receives the feedback signal of normal mode controller and contingency mode controller.
Selectively, when wind speed sudden change pre-warning mark is fictitious time, moderator compares the control inputs of the feedback signal of normal mode controller and contingency mode controller and their settings separately, if the difference between the difference between the feedback signal of normal mode controller and the control inputs of setting and the feedback signal of contingency mode controller and the control inputs of setting is all within allowed band time, moderator cuts off the control of contingency mode controller to wind power generating set, and drops into normal mode controller wind power generating set is controlled.
According to a further aspect in the invention, provide a kind of wind power generating set controlling method, comprised the following steps: (a) obtained air speed data by the wind speed of measuring wind power generating set present position place; (b) carry out forecasting wind speed based on air speed data; (c) wheel speed based on forecasting wind speed result, wind power generating set, output torque and output power are enabled normal mode controller or contingency mode controller.
Selectively, step (b) comprising: the air speed data queue Vn-k that chooses a time period from air speed data, Vn-1, Vn, from air speed data queue, choose maximum value Vmax, minimum value Vmin also records corresponding moment I and J, calculate m=(Vmax-Vmin)/(I-J), if | m|>=|f| and | I-J|>p, the wind speed pre-warning mark that suddenlys change is set to very, otherwise wind speed suddenlys change, pre-warning mark is set to vacation, wherein, n and k are positive integer, n is more than or equal to 3 and be greater than k, f and p are the threshold value setting in advance.
Selectively, step (b) also comprises: if Vmax and Vmin are not unique, and moderator record | the I of I-J| minimum and J.
Selectively, step (b) also comprises: adopt first in first out rolling strategy to carry out the queue of real-time update air speed data, and air speed data queue based on upgrading redefines the true and false of wind speed sudden change pre-warning mark.
Selectively, step (c) comprising: when wind speed sudden change pre-warning mark is true time, calculate the variance ratio of wheel speed, output torque and the output power of wind power generating set; If at least one in the variance ratio of wheel speed, output torque and the output power calculated is greater than predetermined threshold, cuts off the control of normal mode controller to wind power generating set, and drop into contingency mode controller wind power generating set is controlled.
Selectively, described wind power generating set controlling method is further comprising the steps of: (d) after dropping into contingency mode controller, wind speed sudden change pre-warning mark becomes fictitious time, and the control inputs of the feedback signal of normal mode controller and contingency mode controller and their settings is separately compared; (e) if the difference between the difference between the feedback signal of normal mode controller and the control inputs of setting and the feedback signal of contingency mode controller and the control inputs of setting all within allowed band time, cut off the control of contingency mode controller to wind power generating set, and drop into normal mode controller wind power generating set is controlled.
Neither increase hardware input according to the wind turbine control system of the embodiment of the present invention and controlling method, do not lose again wind power generating set operate power, and can ensure wind power generating set stable operation simultaneously.
Brief description of the drawings
By the description of embodiment being carried out below in conjunction with accompanying drawing, these and/or other aspect of the present invention and advantage will become clear and be easier to be understood, wherein:
Fig. 1 is the block diagram illustrating according to the wind turbine control system of the embodiment of the present invention;
Fig. 2 is the flow chart illustrating according to the wind power generating set controlling method of the embodiment of the present invention.
Embodiment
Now the embodiment of the present invention is described in detail, its sample table shows in the accompanying drawings, and wherein, identical label represents identical parts all the time.Below with reference to the accompanying drawings embodiment is described to explain the present invention.
Fig. 1 is the block diagram illustrating according to the wind turbine control system of the embodiment of the present invention.
With reference to Fig. 1, comprise anemoscope 10, moderator 20, normal mode controller 30 and contingency mode controller 40 according to the wind turbine control system of the embodiment of the present invention.Anemoscope 10 can be arranged on wind power generating set cabin directly over, moderator 20, normal mode controller 30 and contingency mode controller 40 can be arranged in the cabin of wind power generating set.But, the invention is not restricted to this, anemoscope 10 also can be arranged on impeller air guide sleeve top.
Anemoscope 10 can be realized by existing various conventional wind finding devices.But, the invention is not restricted to this, anemoscope 10 also can be embodied as the radio micro anemoscope that is arranged on impeller air guide sleeve top.Anemoscope 10 is for measuring in real time the wind speed at wind power generating set present position place, and the air speed data measuring is offered to moderator 20.
Moderator 20 can be realized by existing various processors (such as but not limited to CPU, DSP, ARM chip etc.).Moderator 20 receives the air speed data of exporting from anemoscope 10, carry out forecasting wind speed based on air speed data, and wheel speed, output torque and output power based on forecasting wind speed result, wind power generating set enabled normal mode controller 30 or contingency mode controller 40.According to the embodiment of the present invention, can measure by various sensors are set in wind power generating set wheel speed, output torque and the output power of wind power generating set.
In moderator 20, can be provided with low-pass filter unit, this low-pass filter unit is for carrying out filtering to the air speed data receiving from anemoscope 10.Especially, the cutoff frequency of this low-pass filter unit can be determined according to the dynamic parameter of the change oar response time of wind power generating set, impeller inertia and tower cylinder and blade.Moderator 20 first from air speed data, choose a time period air speed data queue Vn-k ..., Vn-1, Vn(wherein, n and k are positive integer, n is more than or equal to 3 and be greater than k), then from air speed data queue, chooses maximum value Vmax, minimum value Vmin and records corresponding moment I and J.If Vmax and Vmin are not unique, moderator 20 records | the I of I-J| minimum and J.Next, moderator 20 calculates m=(Vmax-Vmin)/(I-J).If | m|>=|f| and | I-J|>p(f and p are the threshold value setting in advance), the moderator 20 wind speed pre-warning mark that suddenlys change is set to very, otherwise moderator 20 wind speed suddenly change, pre-warning mark is set to vacation.Here, threshold value f is the receptance parameter that wind speed changes, relevant with the change oar speed of response of wind power generating set etc., if it is very fast to become oar response, can chooses larger f value, otherwise will choose less f value.Finally, moderator 20 can adopt first in first out rolling strategy to carry out the queue of real-time update air speed data, and air speed data queue based on upgrading redefines the true and false of wind speed sudden change pre-warning mark.
When wind speed sudden change pre-warning mark is true time, moderator 20 calculates the variance ratio of wheel speed, output torque and the output power of wind power generating set.If at least one in the variance ratio of wheel speed, output torque and the output power calculated is greater than predetermined threshold, moderator 20 cuts off the control of normal mode controller 30 to wind power generating set, and drops into contingency mode controller 40 wind power generating set is controlled.
Normal mode controller 30 carries out general control to wind power generating set.For example, normal mode controller 30 can be controlled the wheel speed of wind power generating set, output torque and output power.In addition, normal mode controller 30 also can be carried out the change oar control of wind power generating set.Normal mode controller 30 can be realized by existing various processors (such as but not limited to CPU, DSP, ARM chip etc.), and can carry out the performed various operations of controller of general wind power generating set.
Contingency mode controller 40 is to the wind power generating set control of meeting an urgent need.For example, under emergent control mode, the control of wind power generating set is to stabilize to target with wind power generating set, and takes into account wind power generating set maximum output.Specifically, contingency mode controller 40 can be realized by existing various processors (such as but not limited to CPU, DSP, ARM chip etc.), and the controlling method of contingency mode controller 40 adopts intelligent control method (such as but not limited to fuzzy control) to control wind-force wind power generating set, first limit wheel speed, and after wheel speed is restricted in safety range, the output power of controlling wind power generating set reaches maximum value.
According to the embodiment of the present invention, normal mode controller 30 and contingency mode controller 40 independent operating all the time.But, at any time, in normal mode controller 30 and contingency mode controller 40, only have one and can under the arbitration of moderator 20, control wind power generating set.
Referring again to Fig. 1, moderator 20 also receives the feedback signal of normal mode controller 30 and contingency mode controller 40.Determine that when moderator 20 wind speed sudden change pre-warning mark is fictitious time, moderator 20 compares the control inputs of the feedback signal of normal mode controller 30 and contingency mode controller 40 and their settings separately.If the difference between the difference between the feedback signal of normal mode controller 30 and the control inputs of setting and the feedback signal of contingency mode controller 40 and the control inputs of setting is all within allowed band time, moderator 20 cuts off the control of contingency mode controller 40 to wind power generating set, and drops into normal mode controller 30 wind power generating set is controlled.According to the embodiment of the present invention, the control inputs of normal mode controller 30 and contingency mode controller 40 can be according to actual needs (such as but not limited to, the mounting point of wind power generating set) pre-determined by the designer of wind power generating set, also can be adjusted at any time by the operator of wind power generating set.
Fig. 2 is the flow chart illustrating according to the wind power generating set controlling method of the embodiment of the present invention.
With reference to Fig. 2, at step S201, obtain air speed data by the wind speed of measuring wind power generating set present position place.At step S202, carry out forecasting wind speed based on air speed data.Selectively, can be air speed data be carried out carrying out forecasting wind speed after lower pass-filter.Specifically, in step 202, can from air speed data, choose a time period air speed data queue Vn-k ..., Vn-1, Vn; From air speed data queue, choose maximum value Vmax, minimum value Vmin and record corresponding moment I and J; If Vmax and Vmin are not unique, record | the I of I-J| minimum and J; Then calculate m=(Vmax-Vmin)/(I-J); If | m|>=|f| and | I-J|>p, the wind speed pre-warning mark that suddenlys change is set to very, otherwise wind speed suddenlys change, pre-warning mark is set to vacation.In addition, can carry out the queue of real-time update air speed data with first in first out rolling strategy, and air speed data team based on upgrading redefines the true and false of wind speed sudden change pre-warning mark.
At step S203, wheel speed, output torque and the output power based on forecasting wind speed result, wind power generating set enabled normal mode controller or contingency mode controller.Specifically, in step 203, when wind speed sudden change pre-warning mark is true time, calculate the variance ratio of wheel speed, output torque and the output power of wind power generating set.Thereafter, if at least one in the variance ratio of wheel speed, output torque and the output power calculated is greater than predetermined threshold, cut off the control of normal mode controller to wind power generating set, and drop into contingency mode controller wind power generating set is controlled.
Next,, at step S204, after dropping into contingency mode controller, wind speed sudden change pre-warning mark becomes fictitious time, and the control inputs of the feedback signal of normal mode controller and contingency mode controller and their settings is separately compared.At step S205, if the difference between the difference between the feedback signal of normal mode controller and the control inputs of setting and the feedback signal of contingency mode controller and the control inputs of setting is all within allowed band time, cut off the control of contingency mode controller to wind power generating set, and drop into normal mode controller wind power generating set is controlled.
By applying according to the wind turbine control system of the embodiment of the present invention and method, both can solve the problem of complex-terrain strong gusts of wind apparatus for lower wind generator set stable operation, reduce to greatest extent again the loss of wind power generating set operate power, therefore can improve wind power generating set operation generated energy.Simultaneously, there is opening according to the control principle of the wind turbine control system of the embodiment of the present invention and method, as the control of wind power generating set noise, oscillating load, even blade freeze, in the situation such as abnormal wind regime unit operation, as long as the control algorithm that design is suitable, just can increase to greatest extent wind power generating set and exert oneself.
Although described embodiments of the invention, it should be appreciated by those skilled in the art that without departing from the principles and spirit of the present invention, can modify to the embodiment who describes, scope of the present invention is limited by claim and equivalent thereof.
Claims (15)
1. a wind turbine control system, is characterized in that, described wind turbine control system comprises:
Anemoscope, obtains air speed data by the wind speed of measuring wind power generating set present position place;
Moderator, receives air speed data from anemoscope, carries out forecasting wind speed based on air speed data, and wheel speed, output torque and output power based on forecasting wind speed result, wind power generating set enabled normal mode controller or contingency mode controller;
Normal mode controller, wheel speed, output torque and output power to wind power generating set are controlled;
Contingency mode controller, within first wheel speed being restricted to safety range, the output power of controlling subsequently wind power generating set reaches maximum value.
2. wind turbine control system according to claim 1, is characterized in that, anemoscope be arranged on wind power generating set cabin directly over, moderator, normal mode controller and contingency mode controller are arranged in the cabin of wind power generating set.
3. wind turbine control system according to claim 1, is characterized in that, moderator comprises the low-pass filter unit for the air speed data receiving from anemoscope is carried out to filtering.
4. wind turbine control system according to claim 1, it is characterized in that, moderator from air speed data, choose a time period air speed data queue Vn-k ..., Vn-1, Vn, from air speed data queue, choose maximum value Vmax, minimum value Vmin and record corresponding moment I and J, calculate m=(Vmax-Vmin)/(I-J), if | m|>=|f| and | I-J|>p, the wind speed pre-warning mark that suddenlys change is set to very, otherwise wind speed suddenlys change, pre-warning mark is set to vacation
Wherein, n and k are positive integer, and n is more than or equal to 3 and be greater than k, and f and p are the threshold value setting in advance.
5. wind turbine control system according to claim 4, is characterized in that, if Vmax and Vmin are not unique, and moderator record | the I of I-J| minimum and J.
6. wind turbine control system according to claim 4, is characterized in that, moderator adopts first in first out rolling strategy to carry out the queue of real-time update air speed data, and air speed data queue based on upgrading redefines the true and false of wind speed sudden change pre-warning mark.
7. wind turbine control system according to claim 4, is characterized in that, when wind speed sudden change pre-warning mark is true time, moderator calculates the variance ratio of wheel speed, output torque and the output power of wind power generating set,
If at least one in the variance ratio of wheel speed, output torque and the output power calculated is greater than predetermined threshold, moderator cuts off the control of normal mode controller to wind power generating set, and drops into contingency mode controller wind power generating set is controlled.
8. wind turbine control system according to claim 7, is characterized in that, moderator also receives the feedback signal of normal mode controller and contingency mode controller.
9. wind turbine control system according to claim 8, it is characterized in that, when wind speed sudden change pre-warning mark is fictitious time, moderator compares the control inputs of the feedback signal of normal mode controller and contingency mode controller and their settings separately
If the difference between the difference between the feedback signal of normal mode controller and the control inputs of setting and the feedback signal of contingency mode controller and the control inputs of setting is all within allowed band time, moderator cuts off the control of contingency mode controller to wind power generating set, and drops into normal mode controller wind power generating set is controlled.
10. a wind power generating set controlling method, is characterized in that, described wind power generating set controlling method comprises the following steps:
(a) obtain air speed data by the wind speed of measuring wind power generating set present position place;
(b) carry out forecasting wind speed based on air speed data;
(c) wheel speed based on forecasting wind speed result, wind power generating set, output torque and output power are enabled normal mode controller or contingency mode controller.
11. methods according to claim 10, it is characterized in that, step (b) comprising: from air speed data, choose a time period air speed data queue Vn-k ..., Vn-1, Vn, from air speed data queue, choose maximum value Vmax, minimum value Vmin and record corresponding moment I and J, calculate m=(Vmax-Vmin)/(I-J), if | m|>=|f| and | I-J|>p, the wind speed pre-warning mark that suddenlys change is set to very, otherwise wind speed suddenlys change, pre-warning mark is set to vacation
Wherein, n and k are positive integer, and n is more than or equal to 3 and be greater than k, and f and p are the threshold value setting in advance.
12. wind power generating set controlling methods according to claim 11, is characterized in that, step (b) also comprises: if Vmax and Vmin are not unique, and moderator record | the I of I-J| minimum and J.
13. wind power generating set controlling methods according to claim 11, it is characterized in that, step (b) also comprises: adopt first in first out rolling strategy to carry out the queue of real-time update air speed data, and air speed data queue based on upgrading redefines the true and false of wind speed sudden change pre-warning mark.
14. wind power generating set controlling methods according to claim 11, is characterized in that, step (c) comprising:
When wind speed sudden change pre-warning mark is true time, calculate the variance ratio of wheel speed, output torque and the output power of wind power generating set;
If at least one in the variance ratio of wheel speed, output torque and the output power calculated is greater than predetermined threshold, cuts off the control of normal mode controller to wind power generating set, and drop into contingency mode controller wind power generating set is controlled.
15. wind power generating set controlling methods according to claim 14, is characterized in that, further comprising the steps of:
(d) after dropping into contingency mode controller, wind speed sudden change pre-warning mark becomes fictitious time, and the control inputs of the feedback signal of normal mode controller and contingency mode controller and their settings is separately compared;
(e) if the difference between the difference between the feedback signal of normal mode controller and the control inputs of setting and the feedback signal of contingency mode controller and the control inputs of setting all within allowed band time, cut off the control of contingency mode controller to wind power generating set, and drop into normal mode controller wind power generating set is controlled.
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| CN201310135357.6A CN103216383B (en) | 2013-04-18 | 2013-04-18 | Control system and control method for wind generating set |
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| CN201310135357.6A CN103216383B (en) | 2013-04-18 | 2013-04-18 | Control system and control method for wind generating set |
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| CN103216383B true CN103216383B (en) | 2014-10-22 |
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| CN107076113B (en) * | 2014-08-15 | 2021-03-23 | 维斯塔斯风力系统集团公司 | Control means for wind turbines based on operational trajectory verification |
| CN104806448A (en) * | 2015-05-15 | 2015-07-29 | 长沙理工大学 | Re-cut-in control method for wind driven generator based on wind speed forecasting |
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