CN108119302B - The rated speed control method and device of wind-driven generator - Google Patents
The rated speed control method and device of wind-driven generator Download PDFInfo
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- CN108119302B CN108119302B CN201611082621.4A CN201611082621A CN108119302B CN 108119302 B CN108119302 B CN 108119302B CN 201611082621 A CN201611082621 A CN 201611082621A CN 108119302 B CN108119302 B CN 108119302B
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- 238000000034 method Methods 0.000 title claims abstract description 45
- 230000009467 reduction Effects 0.000 claims description 10
- 238000010586 diagram Methods 0.000 description 14
- 230000009286 beneficial effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000001052 transient effect Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 238000004590 computer program Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0276—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling rotor speed, e.g. variable speed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/10—Purpose of the control system
- F05B2270/101—Purpose of the control system to control rotational speed (n)
- F05B2270/1014—Purpose of the control system to control rotational speed (n) to keep rotational speed constant
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The embodiment of the present invention provides a kind of rated speed control method and device of wind-driven generator, wherein this method comprises: obtaining the blade angle angle value of wind-driven generator；According to the blade angle angle value and with reference to the size relation between angle value, determine whether the wind-driven generator operates above in rated wind speed, wherein, described to be that the wind-driven generator is run below the rated wind speed with reference to angle value, and blade angle angle value when obtaining Maximun power coefficient；If so, the rated speed of the wind-driven generator is reset to revolving speed initially set；If it is not, the rated speed for then keeping the wind-driven generator current is constant, wherein the current rated speed is greater than the revolving speed initially set.The rated speed control method and device of wind-driven generator provided in an embodiment of the present invention, can reduce the load of the mechanical parts such as tower in wind-driven generator, wheel hub, blade, improve the availability of wind-driven generator.
Description
Technical field
The present embodiments relate to technical field of wind power generation more particularly to a kind of rated speed of wind-driven generator to control
Method and device.
Background technique
During wind-power electricity generation, since the wind speed in wind field is real-time change, when the wind speed in wind field is less than specified
When wind speed, need to achieve the purpose that by increasing revolving speed to increase generated energy, and in the prior art, improve wind-driven generator
Rated speed is to improve one of the important means of wind-driven generator revolving speed.After the rated speed of wind-driven generator improves, wind-force
When generator operates in rated speed to rated wind speed section, power coefficient increases, and generated energy is increased.
However in the prior art, when the wind speed in wind field meets or exceeds rated wind speed again, wind-driven generator is still
Old to be run with the rated speed after improving, this makes the load of the mechanical parts such as tower, wheel hub, blade in wind-driven generator
In the presence of raising by a relatively large margin, reduced so as to cause the service life of these mechanical parts.Also, due to the raising of rated speed
Interval of the meeting so that rated speed and wind-driven generator are overrun between error protection threshold value reduces, the transient speed of wind-driven generator
Probability beyond error protection threshold value of overrunning can also increase considerably, this availability that will lead to unit is lowered.
Summary of the invention
The embodiment of the present invention provides a kind of rated speed control method and device of wind-driven generator, to reduce wind-force hair
The load of the mechanical parts such as tower, wheel hub, blade, improves the availability of wind-driven generator in motor.
First aspect of the embodiment of the present invention provides a kind of rated speed control method of wind-driven generator, this method comprises:
Obtain the blade angle angle value of wind-driven generator；
According to the blade angle angle value and with reference to the size relation between angle value, determine the wind-driven generator whether
Rated wind speed operates above, wherein and it is described to be that the wind-driven generator is run below the rated wind speed with reference to angle value, and
Obtain blade angle angle value when Maximun power coefficient；
If so, the rated speed of the wind-driven generator is reset to revolving speed initially set；
If it is not, the rated speed for then keeping the wind-driven generator current is constant, wherein the current rated speed
Greater than the revolving speed initially set.
Second aspect of the embodiment of the present invention provides a kind of rated speed control device of wind-driven generator, which includes:
Module is obtained, for obtaining the blade angle angle value of wind-driven generator；
Determining module, for determining the wind according to the blade angle angle value and with reference to the size relation between angle value
Whether power generator operates above in rated wind speed, wherein the reference angle value is the wind-driven generator described specified
It is run below wind speed, and blade angle angle value when acquirement Maximun power coefficient；
Execution module, for when the wind-driven generator is when the rated wind speed operates above, by the wind-power electricity generation
The rated speed of machine resets to revolving speed initially set；
The execution module is also used to when the wind-driven generator is run below the rated wind speed, described in holding
The current rated speed of wind-driven generator is constant, wherein the current rated speed is greater than the revolving speed initially set.
The embodiment of the present invention, by obtain wind-driven generator blade angle angle value, and according to blade angle angle value with it is preset
With reference to the size relation between angle value, determine whether wind-driven generator operates above in rated wind speed.If wind-driven generator exists
Rated wind speed operates above, then illustrates that wind-driven generator is in full state, at this time by by the rated speed of wind-driven generator
Revolving speed initially set is reset to avoid since rated speed is excessively high to machinery such as the tower of wind-driven generator, wheel hub, blades
The load of component causes to be obviously improved.Also, when wind-driven generator rated speed be reset as revolving speed initially set it
Afterwards, the revolving speed of wind-driven generator can reduce, and aerodynamic noise caused by the blade rotation by wind-driven generator can also reduce, thus
It can achieve the purpose that environmental protection.In addition, after being reset as revolving speed initially set due to the rated speed of wind-driven generator, wind
The rated speed of power generator becomes smaller, between ensureing between threshold value which results in the rated speed of wind-driven generator and overrunning
Every increasing, therefore, under the conditions of fitful wind, the overrun probability of error protection threshold value of wind-driven generator transient speed is reduced by
, be conducive to the availability for improving wind-driven generator.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Fig. 1 is the relational graph between the revolving speed and electromagnetic torque of the wind-driven generator that one embodiment of the invention provides；
Fig. 2 is the flow chart of the rated speed control method for the wind-driven generator that one embodiment of the invention provides；
Fig. 3 is the execution method flow diagram for the step S102 that one embodiment of the invention provides；
Fig. 4 is the execution method flow diagram for the step S102 that further embodiment of this invention provides；
Fig. 5 is the execution method flow diagram for the step S102 that further embodiment of this invention provides；
Fig. 6 is the structural schematic diagram of the rated speed control device for the wind-driven generator that one embodiment of the invention provides；
Fig. 7 is the structural schematic diagram for the determining module 12 that one embodiment of the invention provides；
Fig. 8 is the structural schematic diagram for the determining module 12 that one embodiment of the invention provides；
Fig. 9 is the structural schematic diagram for the determining module 12 that one embodiment of the invention provides.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The term " includes " of description and claims of this specification and " having " and their any deformation, it is intended that
Be to cover it is non-exclusive include, for example, the device of the process or structure that contain series of steps is not necessarily limited to clearly arrange
Those of out structure or step but may include other steps being not clearly listed or intrinsic for these processes or device
Rapid or structure.
Fig. 1 is the relational graph between the revolving speed and electromagnetic torque of the wind-driven generator that one embodiment of the invention provides.In Fig. 1
In, ω1For the initial set value of wind-driven generator rated speed, ω2Setting after being improved for wind-driven generator rated speed
Value, and meet ω1<ω2。PratedFor the rated power of wind-driven generator.P1、P2For the power less than rated power, and meet
P1<P2；v1、v2For the wind speed less than rated wind speed, and meet v1>v2.And when wind-driven generator is in wind speed v1Under conditions of run
When, the rated speed of wind-driven generator is ω1, output power P1, when the rated speed of wind-driven generator is increased to ω2When, wind
The output power of power generator is P2.When wind-driven generator operates in rated wind speed or less, wind-driven generator revolving speed and wind-force
Relation curve between generator electromagnetic torque is the ABDE in Fig. 1；When wind-driven generator operates in rated power, wind-force hair
Relation curve between motor speed and wind-driven generator electromagnetic torque is from the rated power curve P in Fig. 1ratedOn E point tune
Whole is F point；Relationship when wind-driven generator limits Power operation, between wind-driven generator revolving speed and wind-driven generator electromagnetic torque
Curve is the ABCF in Fig. 1.As shown in Figure 1, the relationship between wind-driven generator revolving speed and wind-driven generator electromagnetic torque is bent
In line, closer to the region in the upper right corner Fig. 1, the output power of wind-driven generator is bigger, that is, specified turn for improving wind-driven generator
Speed reaches rated speed to the section of rated power in wind-driven generator, can be improved the generated energy of wind-driven generator.And work as wind
When power generator is run below rated wind speed, those skilled in the art are generally also to improve rated speed using above-mentioned principle
To the generated energy in rated power section.
But in practical application, when wind speed meets or exceeds rated wind speed again, wind-driven generator still can be to improve
Rated speed operation afterwards, this makes the load of the mechanical parts such as tower, wheel hub, blade in wind-driven generator, and there are larger amplitudes
The raising of degree reduces so as to cause the service life of these mechanical parts.Also, since the raising meeting of rated speed is so that specified
Revolving speed and the wind-driven generator interval between error protection threshold value of overrunning reduce, the transient speed of wind-driven generator beyond overrunning therefore
The probability of barrier protection threshold value can also increase considerably, this availability that will lead to unit is lowered.
In view of the above-mentioned problems, the embodiment of the invention provides a kind of rated speed tune based on wind-driven generator pitching control
Adjusting method, this method is by obtaining the blade angle angle value of wind-driven generator, and using the blade angle angle value as judging wind-power electricity generation
The foundation whether machine operates above in rated wind speed.When judging wind-driven generator when rated wind speed operates above, by by wind
The rated speed of power generator resets to revolving speed initially set, to reach the load for reducing wind-driven generator mechanical part, mentions
The purpose of high wind-driven generator availability.
Fig. 2 is the flow chart of the rated speed control method for the wind-driven generator that one embodiment of the invention provides, this method
The control device on wind-driven generator can be set to execute by one, as shown in Fig. 2, method includes the following steps:
Step S101, the blade angle angle value of wind-driven generator is obtained.
It in the present embodiment, is obtained in real time by blade angle angle value of the absolute value encoder to wind-driven generator, and will
The blade angle angle value and timestamp associated storage got is in the database.
In practical applications, a kind of implementation method of step S101 is that wind-driven generator is obtained from database when current
The blade angle angle value at quarter, and using the blade angle angle value as tentatively judging what whether wind-driven generator operated above in rated wind speed
Foundation.Wherein, described operate above in rated wind speed refers to that wind-driven generator is run under the conditions of being greater than the wind field of rated wind speed.
In another implementation method of step S101, the blade of predetermined number can also be disposably obtained from database
Angle value, wherein the blade angle angle value of the predetermined number is that absolute value encoder is pre- before current time and current time
If acquisition obtains in time range.Particularly, in practical applications, above-mentioned preset time range and predetermined number can bases
It is specific to need specific setting.For example, 10 blade angle angle value before can be set as acquisition current time in 10 seconds.
In another implementation method of step S101, it is also based on the predetermined number got in above-mentioned implementation method
Blade angle angle value, calculate average angle angle value of the wind-driven generator in preset time range between current time, and with this
Average angle angle value is judgment basis, judges whether wind-driven generator runs on rated speed.I.e. in this implementation method, step
What rapid S101 was finally obtained is the average angle angle value of wind-driven generator in preset time range.
It further include step S102, according to the blade angle angle value and with reference to the size between angle value in Fig. 2 embodiment
Relationship, determines whether the wind-driven generator operates above in rated wind speed, if so, thening follow the steps S103, otherwise, executes step
Rapid S104.
Fig. 3 is the execution method flow diagram for the step S102 that one embodiment of the invention provides, as shown in figure 3, working as step
When in S101 using the method for obtaining current time blade angle angle value, step S102 includes following sub-step:
Step S201, current vane angle value is compared with described with reference to angle value, if the current vane angle
Value refers to angle value greater than described, thens follow the steps S202, otherwise, executes step S203.
It is that wind-driven generator is run below rated wind speed, and obtains maximum power system with reference to angle value in the present embodiment
Blade angle angle value when number.
When wind-driven generator current time blade angle angle value be greater than the reference value when, then illustrate wind-driven generator at this time
It is run under wind regime more than rated wind speed.And when the blade angle angle value of wind-driven generator is less than or equal to the reference value, and
It not can determine that wind-driven generator must be run under rated wind speed wind regime below.For example, at this point, wind-driven generator may be just
In variable pitch state, therefore, it is necessary to the methods by step S203, by judging blade angle angle value in following a period of time model
Interior variation tendency is enclosed to judge current wind regime.
In Fig. 3 embodiment, further includes step S202, determines that the wind-driven generator is operated above in rated wind speed.
In Fig. 3 embodiment, further includes step S203, continues to obtain the blade angle angle value of predetermined number.
The method similar with step S101 can be used in step S203, i.e., wind-force hair is obtained by absolute value encoder
The blade angle angle value of predetermined number of the motor in next one section of preset time range.The preset time model in the present embodiment
Enclose specifically to set according to specific needs, herein without limitation.
In Fig. 3 embodiment, further includes step S204, determines each blade in the blade angle angle value of the predetermined number
Whether angle value is respectively less than or refers to angle value equal to described, if it is not, S202 is thened follow the steps, it is no to then follow the steps S205.
In practical application, if the blade angle angle value of the predetermined number got in step S203 is respectively less than or is equal to reference angle
Angle value then illustrates that wind-driven generator does not carry out variable pitch operation, and works in rated wind speed wind regime below.Otherwise illustrate wind-force
Generator is executing variable pitch operation, and current wind speed meets or exceeds rated wind speed again.
In Fig. 3 embodiment, further includes step S205, determines that the wind-driven generator is run below rated wind speed.
The present embodiment, first according to wind-driven generator the preceding moment blade angle angle value to the work wind regime of wind-driven generator into
Row anticipation, when can not directly judge, the blade angle angle value for further obtaining the predetermined number after current time is done into one
The judgement of step reduces the resource utilization of control device.
Fig. 4 is the execution method flow diagram for the step S102 that further embodiment of this invention provides, as shown in figure 4, step
S102 includes following sub-step:
Step S301, current vane angle value is compared with described with reference to angle value, if the current vane angle
Value refers to angle value greater than described, thens follow the steps S302, otherwise, executes step S303.
In Fig. 4 embodiment, further includes step S302, determines that the wind-driven generator is operated above in rated wind speed.
In Fig. 4 embodiment, further includes step S303, continues to obtain the blade angle angle value of predetermined number.
In Fig. 4 embodiment, further includes step S304, determines whether the blade angle angle value of the predetermined number is presented reduction
Trend, it is no to then follow the steps S302 if so, then follow the steps S305.
As an example it is assumed that the blade angle angle value of the predetermined number got in step S101 be respectively as follows: 10 degree, 15 degree,
16 degree.Then three angle values are compared with reference angle value respectively, determine in three angle values whether each angle value
Both less than or it is equal to reference to angle value.If so, illustrating that wind-driven generator is run below rated wind speed, otherwise, basis is needed
The sequence of three angle values in acquisition time determines the variation tendency in the second preset time range intra vane angle value,
To determine whether wind-driven generator runs below rated wind speed according to the variation tendency of blade angle angle value.Certainly, herein only
To illustrate rather than to unique restriction of the invention.
In practical application, since the wind speed of wind field is real-time change, wind-driven generator may in sometime range
It experienced pitch control, for example, the wind speed in wind field may be reduced to specified more than rated wind speed in sometime range
Wind speed is greater than reference angle hereinafter, may both exist in the blade angle angle value of the predetermined number got within this time range at this time
The blade angle angle value of angle value, it is also possible to there is the blade angle angle value being less than or equal to reference to angle value.It needs at this time pre- according to this
If the variation tendency of the blade angle angle value of number, determine whether wind-driven generator operates above in rated wind speed.For example, when this is pre-
If the blade angle angle value of number be in reduction trend, illustrate wind-driven generator experienced from operating status more than rated speed to
The transformation of rated speed operating status below, wind-driven generator is that work is below in rated speed at this time.Opposite, then it says
Bright wind-driven generator experienced the transformation from operating status more than rated speed operating status to rated speed below, at this time
Wind-driven generator is work more than rated speed.
In Fig. 4 embodiment, further includes step S305, determines that the wind-driven generator is run below rated wind speed.Fig. 5
For the execution method flow diagram for the step S102 that further embodiment of this invention provides, as shown in figure 5, step S102 includes following son
Step:
Step S401, current vane angle value is compared with described with reference to angle value, if the current vane angle
Value refers to angle value greater than described, thens follow the steps S302, otherwise, executes step S303.
In Fig. 5 embodiment, further includes step S402, determines that the wind-driven generator is operated above in rated wind speed.
In Fig. 5 embodiment, further includes step S403, continues to obtain the blade angle angle value of predetermined number.
Step S404,
The average angle angle value of the blade angle angle value of the predetermined number and the reference angle value are compared, when described average
Angle value refers to angle value less than described with reference to angle value or the average angle angle value equal to described, and described with reference to angle
When the difference of value and the average angle angle value is in preset threshold range, S405 is thened follow the steps, otherwise, executes step
S406。
In Fig. 5 embodiment, further includes step S405, determines that the wind-driven generator is run below rated wind speed.
Step S406, determine whether the blade angle angle value of the predetermined number is presented the trend of reduction, if so, executing step
Rapid S405, it is no to then follow the steps S402.
In practical applications, wind-driven generator may undergo pitch control in sometime range, at this time if wind
The mean leaf angle value of power generator within this time range, which is less than or equal to, refers to angle value, then illustrates that wind-driven generator is worked as
It is preceding to be run below rated wind speed.And angle is referred to when the mean leaf angle value of wind-driven generator within this time range is greater than
When value, wind-driven generator may experienced by it is more than rated speed to below rated speed operation below or rated speed
Operation more than to rated speed needs further to be sentenced according to blade angle angle value variation tendency within this time range at this time
Break current wind regime.
For example, when blade angle angle value is in rising trend in a time range, then illustrate that wind-driven generator experienced
By, to operating status more than rated speed, can be determined that at this time below rated speed current wind generator rated wind speed with
Upper operation.When blade angle angle value is in reduction trend within this time range, then illustrate that wind-driven generator experienced by rated speed
Rated speed operating status below is arrived above, can be determined that current wind generator is run below rated wind speed at this time.
In Fig. 2 embodiment, further includes step S103, the rated speed of the wind-driven generator reset into initial setting
Revolving speed；
It further include that step S104, the rated speed for keeping the wind-driven generator current are constant in Fig. 2 embodiment,
Described in current rated speed be greater than the revolving speed initially set.
The present embodiment, by obtaining the blade angle angle value of wind-driven generator, and according to blade angle angle value and preset reference
Size relation between angle value, determines whether wind-driven generator operates above in rated wind speed.If wind-driven generator is specified
Wind speed operates above, then illustrates that wind-driven generator is in full state, at this time by resetting the rated speed of wind-driven generator
For revolving speed initially set to avoid due to rated speed it is excessively high to mechanical parts such as the tower of wind-driven generator, wheel hub, blades
Load cause to be obviously improved.Also, after the rated speed of wind-driven generator is reset as revolving speed initially set, wind
The revolving speed of power generator can reduce, and aerodynamic noise caused by the blade rotation by wind-driven generator can also reduce, so as to
Achieve the purpose that environmental protection.In addition, after being reset as revolving speed initially set due to the rated speed of wind-driven generator, wind-force hair
The rated speed of motor becomes smaller, and which results in the rated speeds of wind-driven generator and the interval increasing ensured between threshold value of overrunning
Big, therefore, under the conditions of fitful wind, the overrun probability of error protection threshold value of wind-driven generator transient speed is reduced by,
Be conducive to improve the availability of wind-driven generator.
Fig. 6 is the structural schematic diagram of the rated speed control device for the wind-driven generator that one embodiment of the invention provides, such as
Shown in Fig. 6, which includes:
Module 11 is obtained, for obtaining the blade angle angle value of wind-driven generator；
Determining module 12, described in determining according to the blade angle angle value and with reference to the size relation between angle value
Whether wind-driven generator operates above in rated wind speed, wherein the reference angle value is the wind-driven generator in the volume
Determine wind speed or less to run, and blade angle angle value when acquirement Maximun power coefficient；
Execution module 13, for when the wind-driven generator is when the rated wind speed operates above, the wind-force to be sent out
The rated speed of motor resets to revolving speed initially set；
The execution module 13 is also used to when the wind-driven generator is run below the rated wind speed, keeps institute
It is constant to state the current rated speed of wind-driven generator, wherein the current rated speed is greater than the revolving speed initially set.
Wherein, the module that obtains is carried out in real time by blade angle angle value of the absolute value encoder to the wind-driven generator
It obtains.
Device provided in this embodiment can be used in executing method shown in Fig. 2, executive mode and beneficial effect class
Seemingly, it repeats no more herein.
Fig. 7 is the structural schematic diagram for the determining module 12 that one embodiment of the invention provides, as shown in fig. 7, on the basis of Fig. 6
On, the determining module 12 includes:
First determines submodule 121, for comparing the blade angle angle value at current time with reference to angle value with described；
If current vane angle value is greater than described with reference to angle value, it is determined that the wind-driven generator is operated above in rated wind speed；
First acquisition submodule 122, for continuing when current vane angle value is less than or equal to the reference angle value
Obtain the blade angle angle value of predetermined number；
Second determines submodule 123, each blade angle angle value in blade angle angle value for determining the predetermined number
Whether it is respectively less than or refers to angle value equal to described, if so, determines that the wind-driven generator is run below rated wind speed；It is no
Then determine that the wind-driven generator is operated above in rated wind speed.
Device provided in this embodiment can be used in executing method shown in Fig. 3, executive mode and beneficial effect class
Seemingly, it repeats no more herein.
Fig. 8 is the structural schematic diagram for the determining module 12 that one embodiment of the invention provides, as shown in figure 8, on the basis of Fig. 6
On, the determining module 12 includes:
First determines submodule 121, for comparing the blade angle angle value at current time with reference to angle value with described；
If current vane angle value is greater than described with reference to angle value, it is determined that the wind-driven generator is operated above in rated wind speed；
First acquisition submodule 122, for continuing when current vane angle value is less than or equal to the reference angle value
Obtain the blade angle angle value of predetermined number；
Third determines submodule 124, for determining whether the blade angle angle value of the predetermined number is presented the trend of reduction,
It is run below the rated wind speed if so, determining and stating wind-driven generator, otherwise, it determines the wind-driven generator is in the volume
Determine wind speed to operate above.
Device provided in this embodiment can be used in executing method shown in Fig. 4, executive mode and beneficial effect class
Seemingly, it repeats no more herein.
Fig. 9 is the structural schematic diagram for the determining module 12 that one embodiment of the invention provides, as shown in figure 9, on the basis of Fig. 6
On, the determining module 12 includes:
First determines submodule 121, for comparing the blade angle angle value at current time with reference to angle value with described；
If current vane angle value is greater than described with reference to angle value, it is determined that the wind-driven generator is operated above in rated wind speed；
First acquisition submodule 122, for continuing when current vane angle value is less than or equal to the reference angle value
Obtain the blade angle angle value of predetermined number；
4th determines submodule 125；
Described 4th determines submodule, is used for:
The average angle angle value of the blade angle angle value of the predetermined number and the reference angle value are compared；
If the average angle angle value of the blade angle angle value of the predetermined number is greater than described with reference to angle value, it is determined that described pre-
If whether the blade angle angle value of number is presented the trend of reduction；
Wherein, if not, it is determined that the wind-driven generator is operated above in the rated wind speed；
If so, determining that the wind-driven generator is run below the rated wind speed.
Device provided in this embodiment can be used in executing method shown in fig. 5, executive mode and beneficial effect class
Seemingly, it repeats no more herein.
Finally, it should be noted that those of ordinary skill in the art will appreciate that whole in above-described embodiment method or
Part process is that relevant hardware can be instructed to complete by computer program, and the program can be stored in a computer
In readable storage medium storing program for executing, the program is when being executed, it may include such as the process of the embodiment of above-mentioned each method.Wherein, described to deposit
Storage media can be disk, CD, read-only memory (ROM) or random access memory (RAM) etc..
Each functional unit in the embodiment of the present invention can integrate in a processing module, be also possible to each unit
It is individually physically present, can also be integrated in two or more units in a module.Above-mentioned integrated module both can be with
Using formal implementation of hardware, can also be realized in the form of software function module.If the integrated module is with software
The form of functional module realizes, and when sold or used as an independent product, also can store and computer-readable deposits at one
In storage media.Storage medium mentioned above can be read-only memory, disk or CD etc..
The above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；Although referring to aforementioned each reality
Applying example, invention is explained in detail, those skilled in the art should understand that: it still can be to aforementioned each
Technical solution documented by embodiment is modified, or equivalent substitution of some or all of the technical features；And
These are modified or replaceed, the range for technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution.
Claims (10)
1. a kind of rated speed control method of wind-driven generator characterized by comprising
Obtain the blade angle angle value of wind-driven generator；
According to the blade angle angle value and with reference to the size relation between angle value, determine the wind-driven generator whether specified
Wind speed operates above, wherein the angle value that refers to is that the wind-driven generator is run below the rated wind speed, and is obtained
Blade angle angle value when Maximun power coefficient；
If so, the rated speed of the wind-driven generator is reset to revolving speed initially set；
If it is not, the rated speed for then keeping the wind-driven generator current is constant, wherein the current rated speed is greater than
The revolving speed initially set.
2. the method according to claim 1, wherein it is described according to the blade angle angle value and with reference to angle value it
Between size relation, determine whether the wind-driven generator operates above in rated wind speed, comprising:
Current vane angle value is compared with described with reference to angle value；
If the current vane angle value is greater than described with reference to angle value, it is determined that the wind-driven generator is more than rated wind speed
Operation；
If the current vane angle value is less than or equal to the blade angle for referring to angle value, continuing to obtain predetermined number
Value；
Determine whether each blade angle angle value in the blade angle angle value of the predetermined number is respectively less than or is equal to the reference angle
Angle value, if so, determining that the wind-driven generator is run below rated wind speed；Otherwise determine the wind-driven generator specified
Wind speed operates above.
3. the method according to claim 1, wherein it is described according to the blade angle angle value and with reference to angle value it
Between size relation, determine whether the wind-driven generator operates above in rated wind speed, comprising:
Current vane angle value is compared with described with reference to angle value；
If the current vane angle value is greater than described with reference to angle value, it is determined that the wind-driven generator is more than rated wind speed
Operation；
If the current vane angle value is less than or equal to the blade angle for referring to angle value, continuing to obtain predetermined number
Value；
According to sequence of the blade angle angle value of the predetermined number in acquisition time, the blade angle of the predetermined number is determined
Whether value is presented the trend of reduction, if so, determining that the wind-driven generator is run below the rated wind speed, otherwise, really
The fixed wind-driven generator is operated above in the rated wind speed.
4. the method according to claim 1, wherein it is described according to the blade angle angle value and with reference to angle value it
Between size relation, determine whether the wind-driven generator operates above in rated wind speed, comprising:
Current vane angle value is compared with described with reference to angle value；
If the current vane angle value is greater than described with reference to angle value, it is determined that the wind-driven generator is more than rated wind speed
Operation；
If the current vane angle value is less than or equal to the blade angle for referring to angle value, continuing to obtain predetermined number
Value；
If the average angle angle value of the blade angle angle value of the predetermined number is equal to described with reference to angle value or the average angle
Value be less than it is described refer to angle value, and the difference with reference to angle value and the average angle angle value is in preset threshold range
It is interior, it is determined that the wind-driven generator is run below the rated wind speed；
If the average angle angle value of the blade angle angle value of the predetermined number refers to angle value greater than described, according to described default
Sequence of several blade angle angle value in acquisition time, determines whether the blade angle angle value of the predetermined number is presented becoming for reduction
Gesture；
Wherein, if not, it is determined that the wind-driven generator is operated above in the rated wind speed；
If so, determining that the wind-driven generator is run below the rated wind speed.
5. method according to any of claims 1-4, which is characterized in that by absolute value encoder to the wind-force
The blade angle angle value of generator is obtained in real time.
6. a kind of rated speed control device of wind-driven generator characterized by comprising
Module is obtained, for obtaining the blade angle angle value of wind-driven generator；
Determining module, for determining the wind-force hair according to the blade angle angle value and with reference to the size relation between angle value
Whether motor operates above in rated wind speed, wherein the reference angle value is the wind-driven generator in the rated wind speed
It runs below, and blade angle angle value when acquirement Maximun power coefficient；
Execution module, for when the wind-driven generator is when the rated wind speed operates above, by the wind-driven generator
Rated speed resets to revolving speed initially set；
The execution module is also used to keep the wind-force when the wind-driven generator is run below the rated wind speed
The current rated speed of generator is constant, wherein the current rated speed is greater than the revolving speed initially set.
7. device according to claim 6, which is characterized in that the determining module, comprising:
First determines submodule, for comparing the blade angle angle value at current time with reference to angle value with described；If current
Blade angle angle value is greater than described with reference to angle value, it is determined that the wind-driven generator is operated above in rated wind speed；
First acquisition submodule, for continuing to obtain pre- when current vane angle value is less than or equal to the reference angle value
If the blade angle angle value of number；
Second determines submodule, and whether each blade angle angle value in blade angle angle value for determining the predetermined number is small
In or be equal to it is described refer to angle value, if so, determining that the wind-driven generator is run below rated wind speed；Otherwise institute is determined
Wind-driven generator is stated to operate above in rated wind speed.
8. device according to claim 6, which is characterized in that the determining module, comprising:
First determines submodule, for comparing the blade angle angle value at current time with reference to angle value with described；If current
Blade angle angle value is greater than described with reference to angle value, it is determined that the wind-driven generator is operated above in rated wind speed；
First acquisition submodule, for continuing to obtain pre- when current vane angle value is less than or equal to the reference angle value
If the blade angle angle value of number；
Third determines submodule, for sequence of the blade angle angle value according to the predetermined number in acquisition time, determines institute
Whether the blade angle angle value for stating predetermined number is presented the trend of reduction, if so, determining the wind-driven generator described specified
It is run below wind speed, otherwise, it determines the wind-driven generator is operated above in the rated wind speed.
9. device according to claim 6, which is characterized in that the determining module, comprising:
First determines submodule, for comparing the blade angle angle value at current time with reference to angle value with described；If current
Blade angle angle value is greater than described with reference to angle value, it is determined that the wind-driven generator is operated above in rated wind speed；
First acquisition submodule, for continuing to obtain pre- when current vane angle value is less than or equal to the reference angle value
If the blade angle angle value of number；
4th determines submodule；
Described 4th determines submodule, is used for:
The average angle angle value of the blade angle angle value of the predetermined number and the reference angle value are compared；
If the average angle angle value of the blade angle angle value of the predetermined number refers to angle value greater than described, according to described default
Sequence of several blade angle angle value in acquisition time, determines whether the blade angle angle value of the predetermined number is presented becoming for reduction
Gesture；
Wherein, if not, it is determined that the wind-driven generator is operated above in the rated wind speed；
If so, determining that the wind-driven generator is run below the rated wind speed.
10. the device according to any one of claim 6-9, which is characterized in that the acquisition module is compiled by absolute value
Code device obtains the blade angle angle value of the wind-driven generator in real time.
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| CN201611082621.4A CN108119302B (en) | 2016-11-30 | 2016-11-30 | The rated speed control method and device of wind-driven generator |
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| CN201611082621.4A CN108119302B (en) | 2016-11-30 | 2016-11-30 | The rated speed control method and device of wind-driven generator |
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| CN113123926B (en) * | 2019-12-31 | 2022-11-01 | 新疆金风科技股份有限公司 | Variable pitch control method and system of wind generating set |
| CN111396255A (en) * | 2020-03-13 | 2020-07-10 | 上海电气风电集团股份有限公司 | Control method and control device of wind generating set and wind generating system |
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| CN105332853A (en) * | 2015-11-30 | 2016-02-17 | 东南大学 | Control method for coordinating rotating speed and power of wind driven generator at wind speed higher than rated wind speed |
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| TWI494505B (en) * | 2011-12-26 | 2015-08-01 | Delta Electronics Inc | Wind power generating system and control method thereof |
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| CN102562453A (en) * | 2012-03-01 | 2012-07-11 | 国电联合动力技术有限公司 | Pitch control method of variable-speed constant-frequency wind driven power generator at rated revolution speed stage |
| CN102797633A (en) * | 2012-09-11 | 2012-11-28 | 华锐风电科技(集团)股份有限公司 | Method and device for adjusting angles of blades of wind-driven generator |
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