CN109209765B - The pitch control method and system of wind power generating set - Google Patents
The pitch control method and system of wind power generating set Download PDFInfo
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- CN109209765B CN109209765B CN201710518085.6A CN201710518085A CN109209765B CN 109209765 B CN109209765 B CN 109209765B CN 201710518085 A CN201710518085 A CN 201710518085A CN 109209765 B CN109209765 B CN 109209765B
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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
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/022—Adjusting aerodynamic properties of the blades
- F03D7/0224—Adjusting blade pitch
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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
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/04—Automatic control; Regulation
- F03D7/042—Automatic control; Regulation by means of an electrical or electronic controller
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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
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- Wind Motors (AREA)
Abstract
The embodiment of the present invention provides the pitch control method and system of a kind of wind power generating set, this method comprises: the master controller of wind power generating set predicts the pitch control data in each control period in advanced preset time period；Master controller generates corresponding prediction pitch control according to pitch control data and instructs, and prediction pitch control instruction is sent to pitch control device, so that pitch control device is stored by reception sequence；If conducting slip ring communication disruption, pitch control device successively executes prediction pitch control according to the storage order that prediction pitch control instructs and instructs, to carry out variable pitch operation.Since the pitch control instruction in advanced preset time period being stored in advance; so even if conducting slip ring communication disruption; also control blade can be instructed to carry out variable pitch operation according to the pitch control of storage; it can be avoided the unnecessary shutdown of wind power generating set, improve the generated energy of wind power generating set.
Description
Technical field
The present embodiments relate to technical field of wind power generation more particularly to a kind of pitch control sides of wind power generating set
Method and system.
Background technique
Wind power generating set is the equipment for converting wind energy into electric energy.In the control of wind power generating set, pitch control
It is key link therein.In wind power generating set, since the wheel hub of pitch-controlled system is rotated together with impeller, and cabin
It is fixed, so conducting slip ring is one of indispensable component in wind power generating set.
Conducting slip ring is sliding contact, electrostatic coupling or the electromagnetic coupling using conducting ring, in fixed mounting rotatable parts
The accurate power transmitting device of transmission telecommunications number between rolling or slide unit.In wind power generating set, since conducting slip ring needs
Transmit ten several different electric signals, as the alternating current of high frequency, the alternating current of high voltage, high current alternating current, small and weak
Direct current etc., and the interannular of conducting slip ring makes various signals generate interference mutually in transmission process apart from close, it is various dry
Disturb the reliability for having seriously affected signal.And the operation of master control system control pitch control device mainly passes through conducting slip ring, institute
Usually to there is the failure that conducting slip ring is disturbed and leads to communication disruption.
At present for failure caused by conducting slip ring communication disruption reason, since pitch control device cannot acquire air speed value,
The tachometer value of generator or slow-speed shaft cannot be detected, so cannot blindly run, can only carry out shutting down processing to guarantee that wind-force is sent out
The safety of motor group.So as to cause the unnecessary shutdown of wind power generating set, the generated energy of wind power generating set is influenced.
Summary of the invention
The embodiment of the present invention provides the pitch control method and system of a kind of wind power generating set, solves in the prior art
Wind power generating set pitch control method in can only carry out dock after conducting slip ring communication disruption reason leads to failure
Reason influences wind power generating set with the safety for guaranteeing wind power generating set so as to cause the unnecessary shutdown of wind power generating set
Generated energy the technical issues of.
The embodiment of the present invention provides a kind of pitch control method of wind power generating set, comprising:
The master controller of wind power generating set predicts the pitch control number in each control period in advanced preset time period
According to；
The master controller generates corresponding prediction pitch control according to the pitch control data and instructs, and will be described pre-
It surveys pitch control instruction and is sent to pitch control device, so that the pitch control device is stored by reception sequence；
If conducting slip ring communication disruption, the pitch control device according to it is described prediction pitch control instruct storage order according to
Secondary execution prediction pitch control instruction, to carry out variable pitch operation.
The embodiment of the present invention provides a kind of variable blade control system of wind power generating set, comprising:
Pitch control device, comprising:
Predict pitch control instruction receiving unit, the master controller for receiving wind power generating set is sent advanced default
Prediction pitch control instruction in period；
The pitch control location of instruction is predicted, for the reception sequence by the receiving unit to the prediction variable pitch control
System instruction is stored；
Control unit, the storage for being instructed according to the prediction pitch control when determining conducting slip ring communication disruption
Sequence successively executes prediction pitch control instruction, to carry out variable pitch operation.
The embodiment of the present invention provides the pitch control method and system of a kind of wind power generating set, passes through wind power generating set
Master controller predict the pitch control data in each control period in advanced preset time period；Master controller is according to variable pitch control
Data processed generate corresponding prediction pitch control instruction, and prediction pitch control instruction is sent to pitch control device, so as to become
Paddle controller is stored by reception sequence；If conducting slip ring communication disruption, pitch control device is instructed according to prediction pitch control
Storage order successively execute prediction pitch control instruction, to carry out variable pitch operation.Due in advance will be in advanced preset time period
Pitch control instruction stored, so can also refer to according to the pitch control of storage even if conducting slip ring communication disruption
It enables control blade carry out variable pitch operation, can be avoided the unnecessary shutdown of wind power generating set, improve wind power generating set
Generated energy.
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 this hair
Bright some embodiments for those of ordinary skill in the art without any creative labor, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the flow chart of the pitch control method embodiment one of wind power generating set of the present invention；
Fig. 2 is the flow chart of the pitch control method embodiment two of wind power generating set of the present invention；
Fig. 3 is the curve synoptic diagram for the wind speed delta data that wind power plant issues in the embodiment of the present invention two；
Fig. 4 is that the propeller pitch angle of preceding two rows of wind power generating sets and previous row of wind generating set becomes in the embodiment of the present invention two
Change the curve synoptic diagram of data；
Fig. 5 is the structural schematic diagram of the variable blade control system embodiment one of wind power generating set of the present invention；
Fig. 6 is the structural schematic diagram of the variable blade control system embodiment two of wind power generating set of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
It should be appreciated that term "and/or" used herein is only a kind of incidence relation for describing affiliated partner, indicate
There may be three kinds of relationships, for example, A and/or B, can indicate: individualism A, exist simultaneously A and B, individualism B these three
Situation.In addition, character "/" herein, typicallys represent the relationship that forward-backward correlation object is a kind of "or".
Depending on context, word as used in this " if " can be construed to " ... when " or " when ...
When " or " in response to determination " or " in response to detection ".Similarly, depend on context, phrase " if it is determined that " or " if detection
(condition or event of statement) " can be construed to " when determining " or " in response to determination " or " when the detection (condition of statement
Or event) when " or " in response to detection (condition or event of statement) ".
For the sake of clarity, illustrate the definition for the specific word or phrase that the present invention uses first.
Conducting slip ring: conducting slip ring involved in this embodiment refers to master controller and the variable pitch control of wind power generating set
Device processed carries out the conducting slip ring of voltage transmission and communication data interaction, and conducting slip ring is typically mounted on the rotation center of equipment, main
It to be made of rotating part and stationary part.The rotational structure of rotating part connection equipment simultaneously rotates with movement, referred to as " turns
Son ", stationary part connect the fixed structure of equipment, referred to as " stator ".
PID controller: full name are as follows: proportional-integral derivative controller is one common anti-in Industry Control Application
It is fed back to circuit unit, is made of proportional unit, integral unit and differentiation element, the basis of PID control is ratio control, integration control
Steady-state error can be eliminated, but overshoot can be can increase, differential control can accelerate Great inertia system response speed and weaken overshoot trend.
Central monitoring system: referred to as: SCADA, in the power system, central monitoring system are most widely used, technology hair
Exhibition is also stated the most.It accounts for critical role in kinematic system, the running equipment at scene can be monitored and be controlled, with reality
The various functions, i.e. " four known to us such as existing data acquisition, equipment control, measurement, parameter regulation and various types of signal alarm
It is distant " function；Remote-terminal unit, ca bin is its important component, in the integrated automation of transformation stations now
Considerable effect is played in construction.
Fig. 1 is the flow chart of the pitch control method embodiment one of wind power generating set of the present invention, as shown in Figure 1, then originally
The pitch control method for the wind power generating set that embodiment provides includes following steps.
Step 101, the master controller of wind power generating set predicts the change in each control period in advanced preset time period
Paddle controls data.
In the present embodiment, pitch control data can be air speed data, rotary speed data or pitch angular data, in the present embodiment
It does not limit this.
In the present embodiment, the prediction techniques of the pitch control data in each control period in advanced preset time period can be with
Are as follows: the wind speed delta data that wind power plant issues is obtained first, and number is then changed according to the wind speed that controlled wind generating set measures
According to the wind speed delta data issued with wind power plant judge controlled wind generating set wind speed delta data whether under wind power plant
The wind speed delta data of hair matches, if the wind speed that the wind speed delta data of controlled wind generating set and wind power plant issue
Delta data matches, then changes number according to the wind speed that the current air speed data and wind power plant of controlled wind generating set issue
According to the air speed data for calculating each control period in the advanced preset time period of controlled wind generating set.
In the present embodiment, the prediction technique of the pitch control data in each control period in advanced preset time period may be used also
With are as follows: firstly, the propeller pitch angle delta data of preceding two rows of wind power generating sets and previous row of wind generating set in wind power plant is obtained,
Wherein, the distance of preceding two rows wind power generating set to previous row of wind generating set is arrived with controlled wind generating set in wind power plant
Previous row of wind generating set is equidistant.Then, according to the propeller pitch angle delta data of preceding two rows of wind power generating sets with before
Before the propeller pitch angle delta data judgement of one row of wind generating set the propeller pitch angle delta data of two rows of wind power generating sets whether with
The propeller pitch angle delta data of previous row of wind generating set matches, if the propeller pitch angle delta data of preceding two rows wind power generating set
Match with the propeller pitch angle delta data of previous row of wind generating set, it is determined that the delay control time；Finally according to controlled wind
The current pitch angular data of power generator group, the propeller pitch angle delta data of previous row of wind generating set and delay control time meter
Calculate the pitch angular data in each control period in advanced preset time period.
In the present embodiment, the prediction technique of the pitch control data in each control period in advanced preset time period may be used also
With are as follows: the air speed data in each control period in advanced preset time period is predicted using laser anemometer.
It is understood that in the present embodiment, the pitch control data in each control period in advanced preset time period
Prediction technique can also be other methods, the variable pitch control in the present embodiment to each control period in advanced preset time period
The prediction technique of data processed is without limitation.
Step 102, master controller generates corresponding prediction pitch control according to pitch control data and instructs, and prediction is become
Paddle control instruction is sent to pitch control device, so that pitch control device is stored by reception sequence.
Specifically, in the present embodiment, if pitch control data are air speed data or rotary speed data, first according to advanced pre-
If the air speed data or rotary speed data in each control period in the period calculate corresponding pitch angular data.Then for each
The pitch angular data in control period generates corresponding prediction pitch control instruction, carries and corresponds in prediction pitch control instruction
Pitch angular data.Then in the case where conducting slip ring communicates normal situation, in advance by the prediction pitch control in each control period
Instruction is sent to pitch control device, and pitch control device successively receives prediction pitch control instruction, and is deposited according to reception sequence
Storage.
Step 103, if conducting slip ring communication disruption, pitch control device is according to the storage order for predicting that pitch control instructs
Prediction pitch control instruction is executed, successively to carry out variable pitch operation.
It specifically,, can not be sliding by conduction if master controller monitors conducting slip ring communication disruption in the present embodiment
Ring is communicated with pitch control device, then conducting slip ring communication disruption failure is risen to theft-resistant link chain failure, variable pitch by master controller
After controller detects theft-resistant link chain failure, prediction pitch control is successively executed according to the storage order of prediction pitch control instruction and is referred to
It enables, to carry out variable pitch operation.
It should be noted that control pitch control device successively executes prediction according to the storage order of prediction pitch control instruction
The duration control of pitch control instruction is within a preset period of time.
The pitch control method of wind power generating set provided in this embodiment, it is pre- by the master controller of wind power generating set
Survey the pitch control data in each control period in advanced preset time period；Master controller is according to the generation pair of pitch control data
The prediction pitch control instruction answered, and prediction pitch control instruction is sent to pitch control device, so that pitch control device is by connecing
Receipts sequence is stored；If conducting slip ring communication disruption, pitch control device according to prediction pitch control instruct storage order according to
Secondary execution prediction pitch control instruction, to carry out variable pitch operation.Since the pitch control in advanced preset time period being referred in advance
Order is stored, so even if conducting slip ring communication disruption, can also be instructed according to the pitch control of storage control blade into
The operation of row variable pitch, can be avoided the unnecessary shutdown of wind power generating set, improves the generated energy of wind power generating set.
Fig. 2 is the flow chart of the pitch control method embodiment two of wind power generating set of the present invention, as shown in Fig. 2, this reality
The pitch control method for applying the wind power generating set of example offer is the pitch control method implementation in wind power generating set of the present invention
On the basis of example one, further refinement to step 101, step 103, and further comprise and do not interrupted in conducting slip ring communication
When, control pitch control device instructs the step of carrying out variable pitch operation according to real-time pitch control, then wind-force provided in this embodiment
The pitch control method of generating set includes the following steps.
Step 201, the master controller of wind power generating set predicts the change in each control period in advanced preset time period
Paddle controls data.
Optionally, pitch control data include: air speed data；Predict each control period in advanced preset time period
Pitch control data, specifically include:
Firstly, obtaining the wind speed delta data that wind power plant issues.
Wherein, Fig. 3 is the curve synoptic diagram for the wind speed delta data that wind power plant issues in the embodiment of the present invention two, such as Fig. 3
Shown, the wind speed delta data that wind power plant issues can be the wind speed delta data of weather side wind power generating set acquisition.The wind
The wind speed delta data that electric field issues can store in central monitoring system.Master controller passes through logical with central monitoring system
Letter obtains wind speed delta data from central monitoring system.
Secondly, the wind speed delta data that the wind speed delta data measured according to controlled wind generating set and wind power plant issue
The wind speed delta data for judging whether the wind speed delta data of controlled wind generating set issues with wind power plant matches.
In the present embodiment, the wind speed delta data that wind power plant issues illustrates the wind speed of weather side wind power generating set acquisition
The variation tendency of data, the wind speed variation tendency are constant during hearsay is defeated.I.e. controlled wind generating set receives
The wind speed of wind speed variation tendency represented by the wind speed delta data measured after to wind and weather side wind power generating set changes number
Be according to represented wind speed variation tendency it is identical, only have delay in time.
Specifically, in the present embodiment, the air speed data that can be measured according to controlled wind generating set determines that controlled wind is sent out
The wind speed delta data of motor group；According to time sequencing by the wind speed delta data of controlled wind generating set and the wind of weather side
The time interval of peaks and troughs in fast delta data and/or the wind speed ratio at peaks and troughs compare；Such as
The time interval for the continuous peaks and troughs that fruit obtains in scheduled duration and/or the wind speed ratio phase at peaks and troughs
Deng, it is determined that the wind speed variation of controlled wind generating set is matched with the variation of the wind speed of current weather side.
Finally, if the wind speed delta data phase that the current air speed data of controlled wind generating set is issued with wind power plant
Match, then controlled wind is calculated according to the wind speed delta data that the current air speed data and wind power plant of controlled wind generating set issue
The air speed data in each control period in the advanced preset time period of power generator group.Specifically, according to controlled wind generator
The wind speed delta data that the current air speed data and wind power plant of group issue obtains the wind power plant to match with current air speed data
The air speed data issued, the air speed data issued according to the wind power plant to match and each control period in advanced preset time period
Air speed data ratio, calculate the advanced preset time period of controlled wind generating set each control period air speed data.
Optionally, in the present embodiment, pitch control data include: pitch angular data；The master controller of wind power generating set
The pitch control data for predicting each control period in advanced preset time period, specifically include:
Firstly, the propeller pitch angle delta data of two rows of wind power generating sets and previous row of wind generating set before obtaining.
Specifically, in the present embodiment, Fig. 4 is preceding two rows of wind power generating sets and previous row of wind in the embodiment of the present invention two
The curve synoptic diagram of the propeller pitch angle delta data of generating set, the pitch of the two rows of wind power generating sets before indicating of the solid line in Fig. 4
The curve of angle delta data, the dotted line in Fig. 4 indicate the curve of the propeller pitch angle delta data of previous row of wind generating set, such as scheme
Shown in 4, propeller pitch angle represented by the propeller pitch angle delta data of preceding two rows wind power generating set and previous row of wind generating set becomes
Change trend is identical, and only in time, the propeller pitch angle delta data of previous row of wind generating set is sent out compared to preceding two row of wind
The propeller pitch angle delta data of motor group has delay.
It, can be also by two rows of wind power generating sets and the propeller pitch angle delta data of previous row of wind generating set in the present embodiment
It is stored in the form of array, specifically identical as the control period using the period, table 1 is that the storage of propeller pitch angle delta data is shown
Expectation.
Table 1: the storage schematic table of propeller pitch angle delta data
Wherein, Ang1~Ang10 is indicated in chronological order by the pitch angle value after arriving first；Remaining paddle of Angx unified representation
Elongation value.
Secondly, according to the pitch of the propeller pitch angle delta data of preceding two rows of wind power generating sets and previous row of wind generating set
Before the judgement of angle delta data the propeller pitch angle delta data of two rows of wind power generating sets whether the paddle with previous row of wind generating set
Elongation delta data matches.
In the present embodiment, whether the propeller pitch angle delta data of two rows of wind power generating sets generates electricity with previous row of wind before judging
Whether method that the propeller pitch angle delta data of unit matches and the above-mentioned wind speed delta data for judging controlled wind generating set
Similar with the method that the wind speed delta data that wind power plant issues matches, this is no longer going to repeat them.
Again, if the propeller pitch angle of the propeller pitch angle delta data of preceding two rows wind power generating set and previous row of wind generating set
Delta data matches, it is determined that the delay control time.
Specifically, if the pitch angle value of the serial number 1 of the first two row of wind generating set and previous row of wind generating set
The pitch angle value of serial number N matches, and propeller pitch angle data sampling period is t1, it is determined that delay control time t2 can be indicated
For shown in formula (1):
T2=(N-1) * t1 (1)
Finally, according to the current pitch angular data of controlled wind generating set, the propeller pitch angle of previous row of wind generating set
Delta data and delay control time calculate the pitch angular data in each control period in advanced preset time period.Specifically,
It is generated electricity according to the previous row of wind that the delay control time determining current pitch angular data with controlled wind generating set matches
The pitch angular data of unit, according in the pitch angular data of the previous row of wind generating set to match and advanced preset time period
The ratio of the pitch angular data in each control period calculates each control week of the advanced preset time period of controlled wind generating set
The pitch angular data of phase.
Step 202, master controller generates corresponding prediction pitch control according to pitch control data and instructs, and prediction is become
Paddle control instruction is sent to pitch control device, so that pitch control device is stored by reception sequence.
Further, in this embodiment master controller is according to pitch control number if pitch control data are air speed data
According to corresponding prediction pitch control instruction is generated, specifically include:
Firstly, master controller determines corresponding pitch angular data according to air speed data.
It is instructed secondly, generating corresponding prediction pitch control according to pitch angular data.
Specifically, in the present embodiment, master controller is according to the wind speed number in each control period in advanced preset time period
According to the pitch angular data for needing variable pitch is calculated, corresponding prediction pitch control is generated according to each pitch angular data and is instructed.It will
Pitch angular data carries in prediction pitch control instruction, to be become according to the award setting in prediction pitch control instruction
Paddle operation.
Further, in this embodiment master controller is according to pitch control if pitch control data are pitch angular data
Data generate corresponding prediction pitch control instruction, specifically include:
Master controller generates corresponding prediction pitch control according to pitch angular data and instructs.
Step 203, master controller calculates real-time propeller pitch angle according to current rotating speed, and is generated according to real-time propeller pitch angle and become in real time
Paddle control instruction.
Further, in this embodiment calculating real-time propeller pitch angle using PID controller according to current rotating speed, will calculate
Real-time propeller pitch angle carry in the instruction of real-time pitch control, to generate the instruction of real-time pitch control.
It should be noted that in the present embodiment, the execution sequence of step 203 executes sequence with step 201- step 202
Not stringent time restriction executes step 203 after can first carrying out step 201- step 202, after can also first carrying out step 203
Execute step 201- step 202.
Step 204, judge whether conducting slip ring occurs communication disruption, if so, 205 are thened follow the steps, it is no to then follow the steps
206。
Specifically, in the present embodiment, whether communication disruption can be occurred to conducting slip ring by the heartbeat position state in communication
Judged.It communicating under normal circumstances, heartbeat position should be 0-1-0 signal alternately changed, if communication is interrupted, heartbeat
Position is no longer changed.Can also by the communication port status word of communication module to conducting slip ring whether occur communication disruption into
Row judgement, such as port status word are 0, indicate that communication is normal, port status word non-zero, then it represents that communication disruption.
Step 205, conducting slip ring communication disruption failure is risen into theft-resistant link chain failure, so that pitch control device is according to safety
Chain failure successively executes prediction pitch control instruction according to the storage order of prediction pitch control instruction, to carry out variable pitch operation.
After executing the step 205, step 207 is executed.
Step 206, the instruction of real-time pitch control is sent to pitch control device by master controller, and pitch control device is according in real time
The operation of pitch control instruction execution pitch control.
It is illustrated in conjunction with step 204- step 206.Further, in this embodiment if whether conducting slip ring leads to
Letter interrupts, since master controller can not inform that conducting slip ring communication disruption occurs for pitch control device by the communication of conducting slip ring,
Then conducting slip ring communication disruption failure is risen to theft-resistant link chain failure by master controller, so that pitch control device can pass through theft-resistant link chain
Know and theft-resistant link chain failure has occurred, know indirectly and conducting slip ring communication disruption failure has occurred, then refers to according to prediction pitch control
The storage order of order successively executes prediction pitch control instruction, to carry out variable pitch operation.It, will if conducting slip ring communication is not interrupted
Real-time pitch control instruction is sent to pitch control device by conducting slip ring, and pitch control device is held according to the instruction of real-time pitch control
The operation of row pitch control.
Step 207, pitch control device judges whether to reach the default execution time, if so, 208 are thened follow the steps, otherwise, after
It is continuous to execute step 205.
Wherein, it presets and executes the time for time of the current time after preset time period, or to exist less than current time
Time after preset time period.
Step 208, pitch control device judges whether conducting slip ring communication restores normal, if so, 206 are thened follow the steps, it is no
Then follow the steps 209.
Step 209, pitch control device executes preset emergency feathering operation.
It is illustrated in conjunction with step 207- step 209.Further, in this embodiment pitch control device judge whether to
Up to the default execution time, if reaching the default execution time, pitch control device judges whether conducting slip ring communication restores normal, if
Conducting slip ring communication recovery is normal, then pitch control device is operated according to real-time pitch control instruction execution pitch control, if conductive
Slip ring communication does not restore normal, and theft-resistant link chain still remains theft-resistant link chain failure, then in order to protect the safety of wind power generating set, then becomes
Paddle controller executes preset emergency feathering operation.
Wherein, preset emergency feathering operation specifically: control impeller reduces revolving speed, and blade is by the angular pitch of current pitch
The position that angle is 90 ° rotates, and when wheel speed is reduced to preset rotation speed, high speed shaft brake carries out band-type brake shutdown.
The pitch control method of wind power generating set provided in this embodiment, it is pre- by the master controller of wind power generating set
The pitch control data in each control period in advanced preset time period are surveyed, master controller is according to the generation pair of pitch control data
The prediction pitch control instruction answered, and prediction pitch control instruction is sent to pitch control device, so that pitch control device is by connecing
Receipts sequence is stored, and master controller calculates real-time propeller pitch angle according to current rotating speed, and is generated according to real-time propeller pitch angle and become in real time
Paddle control instruction, judges whether conducting slip ring occurs communication disruption, if so, conducting slip ring communication disruption failure is risen to peace
Full chain failure, so that pitch control device successively executes in advance according to theft-resistant link chain failure according to the storage order of prediction pitch control instruction
Pitch control instruction is surveyed, to carry out variable pitch operation, otherwise the instruction of real-time pitch control is sent to pitch control device by master controller,
Variable pitch operation is executed to control pitch control device, the unnecessary shutdown of wind power generating set is can be avoided, improves wind-power electricity generation
The generated energy of unit.
The pitch control method of wind power generating set provided in this embodiment, if control pitch control device is according to prediction variable pitch
The storage order of control instruction successively executes prediction pitch control instruction, then judges whether to reach the default execution time, if so,
Judge whether conducting slip ring communication restores normal, if conducting slip ring communication recovery is normal, master controller is by real-time pitch control
Instruction is sent to pitch control device, executes variable pitch operation to control pitch control device, it is default otherwise to control pitch control device execution
Emergency feathering operation, be capable of the safety of effective protection wind power generating set.
Fig. 5 is the structural schematic diagram of the variable blade control system embodiment one of wind power generating set of the present invention, as shown in figure 5,
The variable blade control system of wind power generating set provided in this embodiment includes: pitch control device.
Wherein, pitch control device includes: prediction pitch control instruction receiving unit 51, and prediction pitch control instruction storage is single
Member 52 and control unit 53.
Wherein, pitch control instruction receiving unit 51 is predicted, what the master controller for receiving wind power generating set was sent
Prediction pitch control instruction in advanced preset time period.The pitch control location of instruction 52 is predicted, for by prediction variable pitch
The reception sequence of control instruction receiving unit stores prediction pitch control instruction.Control unit 53, for being led in determination
When electric slip ring communication disruption, according to prediction pitch control instruction storage order successively executes prediction pitch control instruct, with into
The operation of row variable pitch.
The variable blade control system of wind power generating set provided in this embodiment can execute the skill of embodiment of the method shown in Fig. 1
Art scheme, it is similar that the realization principle and technical effect are similar, and details are not described herein again.
Fig. 6 is the structural schematic diagram of the variable blade control system embodiment two of wind power generating set of the present invention, as shown in fig. 6,
The variable blade control system of wind power generating set provided in this embodiment is real in the pitch control device of wind power generating set of the present invention
On the basis of applying example one, further, master controller includes: real-time propeller pitch angle computing unit 61, real-time pitch control instruction life
At unit 62, pitch control data predicting unit 63 predicts pitch control instruction generation unit 64, prediction pitch control instruction hair
Send unit 65.
Pitch control device further include: default to execute time judging unit 54, conducting slip ring communicates judging unit 55.
Further, real-time propeller pitch angle computing unit 61, for calculating real-time propeller pitch angle according to current rotating speed.Real-time variable pitch
Control instruction generation unit 62 is instructed for generating real-time pitch control according to real-time propeller pitch angle.Control in pitch control device
Unit 53 is also used to instruct control to execute pitch control operation according to real-time pitch control when conducting slip ring is communicated and do not interrupted.
Further, it presets and executes time judging unit 54, for being instructed in control unit 53 according to prediction pitch control
Storage order successively execute after prediction pitch control instructs operation to carry out variable pitch operation, judge whether to reach default hold
The row time.Conducting slip ring communicates judging unit 55, if judging whether conducting slip ring communication is extensive for reaching the default execution time
It is multiple normal.Control unit 53 instructs control to carry out if it is normal to be also used to conducting slip ring communication recovery according to real-time pitch control
Variable pitch operation；If conducting slip ring communication does not restore normal, preset emergency feathering operation is executed.
Further, pitch control data predicting unit 63, for predicting the week of each control in advanced preset time period
The pitch control data of phase.Predict pitch control instruction generation unit 64, it is corresponding pre- for being generated according to pitch control data
Survey pitch control instruction.Pitch control instruction sending unit 65 is predicted, for that will predict that it is single that pitch control instruction is sent to reception
Member.
Optionally, pitch control data include: air speed data；Pitch control data predicting unit 63, specifically includes: wind speed
Delta data obtains module 631, wind speed delta data matching module 632, prediction of wind speed data computation module 633.
Wherein, wind speed delta data obtains module 631, the wind speed delta data issued for obtaining wind power plant.Wind speed becomes
Change data match module 632, the wind that the wind speed delta data and wind power plant for measuring according to controlled wind generating set issue
Fast delta data judges the wind speed delta data whether the wind speed delta data of controlled wind generating set issues with wind power plant
Match.Prediction of wind speed data computation module 633, if under the wind speed delta data and wind power plant of controlled wind generating set
The wind speed delta data of hair matches, then is issued according to the current air speed data and wind power plant of controlled wind generating set
Wind speed delta data calculates the air speed data in each control period in the advanced preset time period of controlled wind generating set.
Further, it predicts pitch control instruction generation unit 64, specifically includes: 641 He of propeller pitch angle data computation module
Predict pitch control directive generation module 642.
Further, propeller pitch angle data computation module 641, for determining corresponding pitch angular data according to air speed data.
It predicts pitch control directive generation module 642, is instructed for generating corresponding prediction pitch control according to pitch angular data.
Optionally, pitch control data include: pitch angular data.Pitch control data predicting unit 63, specifically includes: paddle
Elongation delta data obtains module 634, propeller pitch angle delta data matching module 635, delay control time determining module 636 and pre-
Survey propeller pitch angle data computation module 637
Wherein, propeller pitch angle delta data obtains module 634, for two rows of wind power generating sets and previous row of wind before obtaining
The propeller pitch angle delta data of generating set.Propeller pitch angle delta data matching module 635, for according to preceding two rows of wind power generating sets
Propeller pitch angle delta data and previous row of wind generating set propeller pitch angle delta data judgement before two rows of wind power generating sets
Whether propeller pitch angle delta data matches with the propeller pitch angle delta data of previous row of wind generating set.The delay control time determines
Module 636, if for the propeller pitch angle delta data of preceding two rows of wind power generating sets and the propeller pitch angle of previous row of wind generating set
Delta data matches, it is determined that the delay control time.Propeller pitch angle data computation module 637 is predicted, for according to controlled wind
The current pitch angular data of generating set, the propeller pitch angle delta data of previous row of wind generating set and delay control time calculate
The pitch angular data in each control period in advanced preset time period.
The pitch control device of wind power generating set provided in this embodiment can execute the skill of embodiment of the method shown in Fig. 2
Art scheme, it is similar that the realization principle and technical effect are similar, and details are not described herein again.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (13)
1. a kind of pitch control method of wind power generating set characterized by comprising
The master controller of wind power generating set predicts the pitch control data in each control period in advanced preset time period；
The master controller generates corresponding prediction pitch control according to the pitch control data and instructs, and the prediction is become
Paddle control instruction is sent to pitch control device, so that the pitch control device is stored by reception sequence；
If conducting slip ring communication disruption, the pitch control device is successively held according to the storage order that the prediction pitch control instructs
Row prediction pitch control instruction, to carry out variable pitch operation.
2. the method according to claim 1, wherein further include:
The master controller calculates real-time propeller pitch angle according to current rotating speed, and generates real-time variable pitch control according to the real-time propeller pitch angle
System instruction；
If conducting slip ring communication is not interrupted, the real-time pitch control instruction is sent to pitch control by the master controller
Device, the pitch control device are operated according to the real-time pitch control instruction execution pitch control.
3. according to the method described in claim 2, it is characterized in that, in the pitch control device according to the prediction pitch control
The storage order of instruction successively executes prediction pitch control instruction, after the operation to carry out variable pitch operation, further includes:
The pitch control device judges whether to reach the default execution time；
If reaching the default execution time, the pitch control device judges whether the conducting slip ring communication restores normal；
If the conducting slip ring communication recovery is normal, variable pitch operation is carried out according to the real-time pitch control instruction control；
If the conducting slip ring communication does not restore normal, preset emergency feathering operation is executed.
4. method according to any one of claim 1-3, which is characterized in that the pitch control data include: wind speed
Data；The master controller of the wind power generating set predicts the pitch control number in each control period in advanced preset time period
According to specifically including:
Obtain the wind speed delta data that wind power plant issues；
Described in the wind speed delta data judgement that the wind speed delta data and wind power plant measured according to controlled wind generating set issues
The wind speed delta data whether the wind speed delta data of controlled wind generating set issues with the wind power plant matches；
If the wind speed delta data that the wind speed delta data of the controlled wind generating set is issued with the wind power plant matches,
The wind speed delta data then issued according to the current air speed data of controlled wind generating set and the wind power plant calculate it is described by
Control the air speed data in each control period in the advanced preset time period of wind power generating set.
5. according to the method described in claim 4, it is characterized in that, the master controller is generated according to the pitch control data
Corresponding prediction pitch control instruction, specifically includes:
The master controller determines corresponding pitch angular data according to the air speed data；
Corresponding prediction pitch control instruction is generated according to the pitch angular data.
6. method according to claim 1-3, which is characterized in that the pitch control data include: propeller pitch angle
Data；The master controller of the wind power generating set predicts the pitch control number in each control period in advanced preset time period
According to specifically including:
The propeller pitch angle delta data of two rows of wind power generating sets and previous row of wind generating set before obtaining；
Change number according to the propeller pitch angle of the propeller pitch angle delta data of preceding two rows of wind power generating sets and previous row of wind generating set
It is judged that before described two rows of wind power generating sets propeller pitch angle delta data whether the paddle with the previous row of wind generating set
Elongation delta data matches；
If the propeller pitch angle of the propeller pitch angle delta data and the previous row of wind generating set of two rows of wind power generating sets before described
Delta data matches, it is determined that the delay control time；
Change number according to the propeller pitch angle of the current pitch angular data of controlled wind generating set, the previous row of wind generating set
According to and the delay control time calculate the pitch angular data in each control period in advanced preset time period；
The master controller generates corresponding prediction pitch control according to the pitch control data and instructs, and specifically includes:
The master controller generates corresponding prediction pitch control according to the pitch angular data and instructs.
7. a kind of variable blade control system of wind power generating set characterized by comprising
Pitch control device, comprising:
Predict pitch control instruction receiving unit, the advanced preset time that the master controller for receiving wind power generating set is sent
Prediction pitch control instruction in section；
The pitch control location of instruction is predicted, for the reception sequence by the prediction pitch control instruction receiving unit to institute
Prediction pitch control instruction is stated to be stored；
Control unit, the storage order for being instructed according to the prediction pitch control when determining conducting slip ring communication disruption
Prediction pitch control instruction is executed, successively to carry out variable pitch operation.
8. system according to claim 7, which is characterized in that the master controller further include:
Real-time propeller pitch angle computing unit, for calculating real-time propeller pitch angle according to current rotating speed；
And real-time pitch control instruction generation unit, it is instructed for generating real-time pitch control according to the real-time propeller pitch angle；
Wherein, the control unit of the pitch control device is also used to when conducting slip ring is communicated and do not interrupted, according to real-time variable pitch control
System instruction control executes pitch control operation.
9. system according to claim 8, which is characterized in that the pitch control device further include:
It is default to execute time judging unit, for the storage order in described control unit according to the prediction pitch control instruction
After successively executing operation of the prediction pitch control instruction to carry out variable pitch operation, judge whether to reach the default execution time；
Conducting slip ring communicates judging unit, if judging that the conducting slip ring communication is for reaching the default execution time
It is no to restore normal；
Described control unit instructs if it is normal to be also used to the conducting slip ring communication recovery according to the real-time pitch control
Control carries out variable pitch operation；If the conducting slip ring communication does not restore normal, preset emergency feathering operation is executed.
10. according to the described in any item systems of claim 7-9, which is characterized in that the master controller includes:
Pitch control data predicting unit, for predicting the pitch control number in each control period in advanced preset time period
According to；
It predicts pitch control instruction generation unit, refers to for generating corresponding prediction pitch control according to the pitch control data
It enables；
Pitch control instruction sending unit is predicted, for prediction pitch control instruction to be sent to the prediction pitch control
Instruction receiving unit.
11. system according to claim 10, which is characterized in that
The pitch control data include: air speed data；The pitch control data predicting unit, specifically includes:
Wind speed delta data obtains module, the wind speed delta data issued for obtaining wind power plant；
Under wind speed delta data matching module, wind speed delta data for being measured according to controlled wind generating set and wind power plant
The wind speed delta data of hair judges what whether the wind speed delta data of the controlled wind generating set issued with the wind power plant
Wind speed delta data matches；
Prediction of wind speed data computation module, if wind speed delta data and the wind power plant for the controlled wind generating set
The wind speed delta data issued matches, then is issued according to the current air speed data of controlled wind generating set and the wind power plant
Wind speed delta data calculate the wind speed number in each control period in the advanced preset time period of controlled wind generating set
According to.
12. system according to claim 11, which is characterized in that the prediction pitch control instruction generation unit, specifically
Include:
Propeller pitch angle data computation module, for determining corresponding pitch angular data according to the air speed data；
It predicts pitch control directive generation module, refers to for generating corresponding prediction pitch control according to the pitch angular data
It enables.
13. system according to claim 10, which is characterized in that the pitch control data include: pitch angular data；Institute
Pitch control data predicting unit is stated, is specifically included:
Propeller pitch angle delta data obtains module, for the paddle of two rows of wind power generating sets and previous row of wind generating set before obtaining
Elongation delta data；
Propeller pitch angle delta data matching module, for according to preceding two rows of wind power generating sets propeller pitch angle delta data and previous row
The propeller pitch angle delta data of wind power generating set judge it is described before two rows of wind power generating sets propeller pitch angle delta data whether with
The propeller pitch angle delta data of the previous row of wind generating set matches；
Delay control time determining module, if for wind power generating sets two rows of before described propeller pitch angle delta data and it is described before
The propeller pitch angle delta data of one row of wind generating set matches, it is determined that the delay control time；
Propeller pitch angle data computation module is predicted, for according to the current pitch angular data of controlled wind generating set, described previous
The propeller pitch angle delta data of row of wind generating set and delay control time calculate each control in advanced preset time period
The pitch angular data in period processed.
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| CN113027698B (en) * | 2019-12-25 | 2022-07-12 | 新疆金风科技股份有限公司 | Detection method and device for abnormity of variable pitch control loop of wind generating set |
| CN113431737B (en) * | 2020-03-23 | 2022-04-19 | 北京金风科创风电设备有限公司 | Variable pitch control method, controller and control system of wind generating set |
| CN113446154B (en) * | 2020-03-27 | 2024-06-28 | 北京金风科创风电设备有限公司 | Variable pitch control method and control system of wind generating set |
| CN113446152B (en) * | 2020-03-27 | 2024-04-19 | 北京金风科创风电设备有限公司 | Variable pitch control method and control system of wind generating set |
| CN114251224B (en) * | 2020-09-25 | 2024-05-28 | 北京金风科创风电设备有限公司 | Variable rate pitch control method and device executed by variable pitch driver |
| CN114645821B (en) * | 2022-05-13 | 2022-10-11 | 深圳众城卓越科技有限公司 | Remote control method, device, equipment and medium for wind power pitch system |
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