CN108167117B - Control method and device for feathering of blades and wind generating set - Google Patents
Control method and device for feathering of blades and wind generating set Download PDFInfo
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- CN108167117B CN108167117B CN201711342532.3A CN201711342532A CN108167117B CN 108167117 B CN108167117 B CN 108167117B CN 201711342532 A CN201711342532 A CN 201711342532A CN 108167117 B CN108167117 B CN 108167117B
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 238000001514 detection method Methods 0.000 claims abstract description 8
- 238000012360 testing method Methods 0.000 claims description 39
- 230000001960 triggered effect Effects 0.000 claims description 13
- 239000003550 marker Substances 0.000 claims description 10
- 230000008859 change Effects 0.000 claims description 5
- 230000008569 process Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 230000002159 abnormal effect Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000012545 processing 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
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
-
- 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
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/328—Blade pitch angle
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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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The embodiment of the invention discloses a method and a device for controlling feathering of a blade and a wind generating set. The method comprises the following steps: responding to a shutdown instruction of the wind generating set, and detecting whether an angle fault exists in a first variable pitch system of the wind generating set; determining a first time length for stopping feathering of a blade corresponding to the first variable-pitch system according to a detection result of the first variable-pitch system; and controlling the blades to stop feathering according to the first time length. The control method and device for the feathering of the blades and the wind generating set can prevent the tooth-shaped belt from being broken and prevent the tooth-shaped belt pressing plate from being damaged and improve the safety of the wind generating set.
Description
Technical field
The present invention relates to technical field of wind power generation more particularly to a kind of control method, device and the wind-force of blade feathering
Generating set.
Background technique
Toothed belt is the transmission belt that a kind of working face is tooth-shape structure.Toothed belt with the engagement between tooth and the gear teeth by making
With carrying out power transmitting.
Currently, the pitch-controlled system of wind power generating set, which generallys use toothed belt, carries out variable pitch.Variable pitch is carried out by toothed belt
Principle are as follows: for wheel hub as matrix, the inner ring of pitch variable bearings is connected to wheel hub, and the outer ring of pitch variable bearings is connected to blade, tooth form
Band connection is moved in the outside of pitch variable bearings outer ring, and by the drive wheel toothed belt of pitch drive component, and then is driven
Pitch variable bearings outer ring and blade rotation, realize the variable pitch of blade.
During pitch-controlled system carries out feathering, under normal circumstances, 87 ° of sensor-triggereds or 91 ° of limit switches are triggered,
Pitch drive inverter stops enabled, and blade stops feathering, wherein 91 limit switches are as the second pipe protection trigger signal, one
Under kind abnormal conditions, there is exception in certain node in 91 ° of limit switch circuits, although propeller pitch angle reaches 91 °, pitch control device
The signal of 91 ° of limit switches feedback cannot be received, pitch drive inverter continues to drive pitch motor work, and blade persistently becomes
In the case where pitch motor biggish driving torque, it is disconnected to will lead to toothed belt at this point, toothed belt will reach the limit of position for paddle
Split or toothed belt pressing plate damage situations such as.Under another abnormal conditions, blade does not instruct according to feathering suitable to 91 ° of directions
Paddle, but to 0 ° of direction variable pitch also results in toothed belt fracture or situations such as toothed belt pressing plate damages.In above two abnormal feelings
Under condition, pitch motor is possible to that stall can occur when toothed belt is in extreme position, and pitch motor is caused to burn or damage
Other circuits influence wind power generating set safety.
Summary of the invention
The embodiment of the present invention provides control method, device and the wind power generating set of a kind of blade feathering, can prevent tooth
The fracture of shape band, the damage of toothed belt pressing plate and the safety for improving wind power generating set.
On the one hand, the embodiment of the invention provides a kind of control method of blade feathering, method includes:
The halt instruction for responding wind power generating set detects the first pitch-controlled system of wind power generating set with the presence or absence of angle
Class failure；
According to the testing result of the first pitch-controlled system, when determining that the corresponding blade of the first pitch-controlled system stops the first of feathering
It is long；
According to the first duration, controls blade and stop feathering.
In one embodiment of the invention, according to the testing result of the first pitch-controlled system, the first pitch-controlled system pair is determined
The blade answered stops the first duration of feathering, comprising:
According to the second pitch-controlled system and third variable pitch system of the testing result of the first pitch-controlled system and wind power generating set
The testing result of system sets the initial angle angle value of blade；
According to the corresponding shutdown mode of halt instruction, determine the feathering speed of blade, shutdown mode be normal shutdown mode,
One of quick shutdown mode and emergency shutdown mode；
According to initial angle angle value, identified feathering speed and the corresponding maximum propeller pitch angle of blade, the first duration is determined.
In one embodiment of the invention, according to the of the testing result of the first pitch-controlled system and wind power generating set
The testing result of two pitch-controlled systems and third pitch-controlled system sets the initial angle angle value of blade, comprising:
If angle class failure, which is not present, in the first pitch-controlled system is set as initial for the propeller pitch angle of currently detected blade
Angle value.
In one embodiment of the invention, according to the of the testing result of the first pitch-controlled system and wind power generating set
The testing result of two pitch-controlled systems and third pitch-controlled system sets the initial angle angle value of blade, comprising:
If only there are angle class failures for the first pitch-controlled system, by currently detected the second pitch-controlled system and third variable pitch
The average angle angle value of the propeller pitch angle of the corresponding blade of system, is set as initial angle angle value.
In one embodiment of the invention, according to the of the testing result of the first pitch-controlled system and wind power generating set
The testing result of two pitch-controlled systems and third pitch-controlled system sets the initial angle angle value of blade, comprising:
If there are angle class failures for the first pitch-controlled system, and only have a change in the second pitch-controlled system and third pitch-controlled system
There are angle class failures for oar system, then by the paddle of the currently detected corresponding blade of pitch-controlled system that not there is no angle class failure
Elongation is set as initial angle angle value.
In one embodiment of the invention, it according to the first duration, controls blade and stops feathering, comprising:
According to the corresponding feathering movement of the first duration, blade stop trigger signal that the corresponding sensor of marker sends,
The signal that the corresponding limit switch of blade is triggered and the second duration for controlling blade stopping feathering, control blade stop
Only feathering, wherein the second duration is to be determined according to minimum feathering speed, minimum propeller pitch angle and maximum propeller pitch angle.
On the other hand, the embodiment of the invention provides a kind of control device of blade feathering, device includes:
Detection module detects the first variable pitch system of wind power generating set for responding the halt instruction of wind power generating set
System whether there is angle class failure；
Determining module determines that the corresponding blade of the first pitch-controlled system stops for the testing result according to the first pitch-controlled system
Only the first duration of feathering；
Control module, for controlling blade and stopping feathering according to the first duration.
In one embodiment of the invention, determining module, comprising:
Setup unit, for according to the testing result of the first pitch-controlled system and the second pitch-controlled system of wind power generating set
With the testing result of third pitch-controlled system, the initial angle angle value of blade is set；
First determination unit shuts down mould for determining the feathering speed of blade according to the corresponding shutdown mode of halt instruction
Formula is one of normal shutdown mode, quick shutdown mode and emergency shutdown mode；
Second determination unit, for according to initial angle angle value, identified feathering speed and the corresponding maximum paddle of blade
Elongation determines the first duration.
In one embodiment of the invention, setup unit is specifically used for:
If angle class failure, which is not present, in the first pitch-controlled system is set as initial for the propeller pitch angle of currently detected blade
Angle value.
In one embodiment of the invention, setup unit is specifically used for:
If only there are angle class failures for the first pitch-controlled system, by currently detected the second pitch-controlled system and third variable pitch
The average angle angle value of the propeller pitch angle of the corresponding blade of system, is set as initial angle angle value
In one embodiment of the invention, setup unit is specifically used for:
If there are angle class failures for the first pitch-controlled system, and only have a change in the second pitch-controlled system and third pitch-controlled system
There are angle class failures for oar system, then by the paddle of the currently detected corresponding blade of pitch-controlled system that not there is no angle class failure
Elongation is set as initial angle angle value
In one embodiment of the invention, control module is specifically used for:
According to the corresponding feathering movement of the first duration, blade stop trigger signal that the corresponding sensor of marker sends,
The signal that the corresponding limit switch of blade is triggered and the second duration for controlling blade stopping feathering, control blade stop
Only feathering, wherein the second duration is according to minimum feathering speed, the corresponding minimum propeller pitch angle of blade and the corresponding maximum paddle of blade
What elongation determined.
In another aspect, the embodiment of the invention provides a kind of wind power generating set, including paddle provided in an embodiment of the present invention
The control device of leaf feathering.
Control method, device and the wind power generating set of the blade feathering of the embodiment of the present invention, toothed belt will not arrive at
Extreme position, and then toothed belt fracture and the damage of toothed belt pressing plate can be prevented, can also it prevent pitch motor at toothed belt
The stall that can occur when extreme position causes pitch motor to burn or damage other circuits, influences wind power generating set peace
The occurrence of complete, can be improved the safety of wind power generating set.
Detailed description of the invention
In order to illustrate the technical solution of the embodiments of the present invention more clearly, will make below to required in the embodiment of the present invention
Attached drawing is briefly described, for those of ordinary skill in the art, without creative efforts, also
Other drawings may be obtained according to these drawings without any creative labor.
Fig. 1 shows the flow diagram of the control method of blade feathering provided in an embodiment of the present invention；
Fig. 2 shows the structural schematic diagrams of the control device of blade feathering provided in an embodiment of the present invention.
Specific embodiment
The feature and exemplary embodiment of various aspects of the invention is described more fully below, in order to make mesh of the invention
, technical solution and advantage be more clearly understood, with reference to the accompanying drawings and embodiments, the present invention is further retouched in detail
It states.It should be understood that specific embodiment described herein is only configured to explain the present invention, it is not configured as limiting the present invention.
To those skilled in the art, the present invention can be real in the case where not needing some details in these details
It applies.Below the description of embodiment is used for the purpose of better understanding the present invention to provide by showing example of the invention.
It should be noted that, in this document, relational terms such as first and second and the like are used merely to a reality
Body or operation are distinguished with another entity or operation, are deposited without necessarily requiring or implying between these entities or operation
In any actual relationship or order or sequence.Moreover, the terms "include", "comprise" or its any other variant are intended to
Non-exclusive inclusion, so that the process, method, article or equipment including a series of elements is not only wanted including those
Element, but also including other elements that are not explicitly listed, or further include for this process, method, article or equipment
Intrinsic element.In the absence of more restrictions, the element limited by sentence " including ... ", it is not excluded that including
There is also other identical elements in the process, method, article or equipment of the element.
As shown in Figure 1, Fig. 1 shows the flow diagram of the control method of blade feathering provided in an embodiment of the present invention.
It may include:
S101: responding the halt instruction of wind power generating set, and whether the first pitch-controlled system for detecting wind power generating set is deposited
In angle class failure.
S102: according to the testing result of the first pitch-controlled system, determine that the corresponding blade of the first pitch-controlled system stops feathering
First duration.
S103: it according to the first duration, controls blade and stops feathering.
It should be understood that the angle class failure of the embodiment of the present invention is the general designation of failure relevant to blade angle, with paddle
The relevant failure of leaf angle is such as: blade rotary encoder warning failure, variable pitch velocity anomaly failure, other are defined as rotation and compile
The failure of code device classification and the failure etc. with clear blade number property.
It is exemplary, wind power generating set include three blades, respectively the first blade, the second blade and third blade,
In, the corresponding pitch-controlled system of each blade, i.e. the first blade, the second blade and third blade respectively with the first variable pitch system
System, the second pitch-controlled system and third pitch-controlled system are corresponding.
It is illustrated for controlling the first blade feathering below.
The halt instruction of wind power generating set is responded, the first pitch-controlled system of detection whether there is angle class failure.In this hair
In bright one embodiment, which, which stops, instructs and can detect that wind power generating set goes out for the master controller of wind power generating set
It is sent when existing failure to the first pitch-controlled system, or the first pitch-controlled system detects that itself pitch-controlled system breaks down
When, the halt instruction of itself generation.When certain halt instruction can also be to carry out conventional maintenance to wind power generating set, operation
What personnel were sent by master controller to the first pitch-controlled system.
In one embodiment of the invention, according to the testing result of the first pitch-controlled system, the first pitch-controlled system pair is determined
The blade answered stops the first duration of feathering, comprising: according to the testing result of the first pitch-controlled system and wind power generating set
The testing result of second pitch-controlled system and third pitch-controlled system sets the initial angle angle value of blade；It is corresponding according to halt instruction
Shutdown mode, determines the feathering speed of blade, and shutdown mode is normal shutdown mode, quick shutdown mode and emergency shutdown mode
One of；According to initial angle angle value, identified feathering speed and the corresponding maximum propeller pitch angle of blade, when determining first
It is long.
In one embodiment of the invention, shutdown mode includes orderly closedown mode, quick shutdown mode and promptly stops
Machine mode.The corresponding feathering speed of orderly closedown mode is Vnormal；The corresponding feathering speed of quick shutdown mode is Vfast；Tightly
The corresponding feathering speed of anxious shutdown mode is VEMC。
In one embodiment of the invention, according to the of the testing result of the first pitch-controlled system and wind power generating set
The testing result of two pitch-controlled systems and third pitch-controlled system, sets the initial angle angle value of blade, if may include: the first variable pitch system
System is not present angle class failure and is set as initial angle angle value then by the propeller pitch angle of currently detected blade.
Specifically, the first pitch-controlled system includes following four situation there is no angle class failure:
The first situation: only there are angle class failures for the second pitch-controlled system.
Second situation, only there are angle class failures for third pitch-controlled system.
The third situation, only there are angle class failures for the second pitch-controlled system and third pitch-controlled system.
Angle class failure is all not present in 4th kind of situation, three pitch-controlled systems.
When angle class failure is not present in the first pitch-controlled system, the currently detected corresponding propeller pitch angle of the first blade is indicated
For accurate propeller pitch angle.At this point, initial angle angle value P0 is assigned a value of the corresponding propeller pitch angle P1 of the first currently detected blade.
Assuming that the feathering speed of the first blade determined is V0, minimum propeller pitch angle is Pr, and maximum propeller pitch angle is Ps.
It is understood that minimum propeller pitch angle Pr opens the attainable minimum angles value of paddle, maximum propeller pitch angle Ps for blade
For the attainable maximal angle value of blade feathering.
Then the first duration T1 is the first blade with feathering speed V0, and feathering is to maximum propeller pitch angle since initial angle angle value P0
Required duration when Ps.
The first blade is set with minimum feathering speed Vr, feathering is to maximum propeller pitch angle Ps when institute since minimum propeller pitch angle Pr
The when a length of T0 needed.
It is understood that Vr is the minimum feathering speed in the corresponding feathering speed of different shutdown modes, V0 is current
The corresponding feathering speed of shutdown mode, then Vr and V0 meets: V0 >=Vr.
Pr is minimum propeller pitch angle, and initial angle angle value P0 is the currently detected corresponding propeller pitch angle P1 of the first blade, then Pr
Meet with P0: P0 >=Pr.
For V0 >=Vr, P0 >=Pr, then there is T0 >=T1.
Then at this time according to the corresponding feathering movement of the first blade stop trigger signal that the corresponding sensor of marker sends,
The signal and T1 that the corresponding limit switch of first blade is triggered, the first blade of control stop feathering.
Under normal conditions, it is 87 ° that feathering movement, which stops the corresponding propeller pitch angle of marker, when sensor detects the paddle of blade
When elongation is 87 °, the trigger signal for stopping blade feathering is issued, which is that feathering movement stopping marker is corresponding
Sensor (hereinafter referred to as 87 ° of sensors).Limit switch is the most critical device for ensureing safe feathering.Limit switch is also known as
Travel switch is the electric switch to limit the limit of sports record position of mechanical equipment.Currently, the limit switch in pitch-controlled system
Mostly use contact (also referred to as touching formula) limit switch.When feathering to stop position, touched by limit switch triggering device
The connecting rod driving switch node of limit switch disconnects, and then stops feathering.
In one embodiment of the invention, according to the of the testing result of the first pitch-controlled system and wind power generating set
The testing result of two pitch-controlled systems and third pitch-controlled system, sets the initial angle angle value of blade, if may include: only the first variable pitch
There are angle class failures for system, then by the second currently detected pitch-controlled system and the corresponding blade of third pitch-controlled system
The average angle angle value of propeller pitch angle, is set as initial angle angle value.
Specifically, indicating the second pitch-controlled system and third pitch-controlled system if only there are angle class failures for the first pitch-controlled system
There is no angle class failures.At this point, initial angle angle value P0 is assigned a value of the corresponding propeller pitch angle P2 of the second currently detected blade
The average angle angle value of propeller pitch angle P3 corresponding with third blade.
Assuming that the feathering speed of the first blade determined is V0, minimum propeller pitch angle is Pr, and maximum propeller pitch angle is Ps.
Then the first duration T1 is the first blade with feathering speed V0, and feathering is to maximum propeller pitch angle since initial angle angle value P0
Required duration when Ps.
The first blade is set with the minimum feathering speed Vr in the corresponding feathering speed of different shutdown modes, from minimum pitch
Angle Pr a length of T0 when required when starting feathering to maximum propeller pitch angle Ps.
It is understood that Vr is the minimum feathering speed in the corresponding feathering speed of different shutdown modes, V0 is current
The corresponding feathering speed of shutdown mode, then Vr and V0 meets: V0 >=Vr.
Pr is minimum propeller pitch angle, and P2 is the currently detected corresponding propeller pitch angle of the second blade, and P3 is currently detected
The corresponding propeller pitch angle of third blade.Then Pr and P2 meets: P2 >=Pr；Pr and P3 meets: P3 >=Pr.
For P2 >=Pr, P3 >=Pr, then there is average angle angle value P0 >=Pr of P2 and P3.
For V0 >=Vr, P0 >=Pr, then there is T0 >=T1.
Then opened at this time according to the trigger signal of the corresponding 87 ° of sensors sending of the first blade, the corresponding limit of the first blade
The signal and T1 being triggered are closed, the first blade of control stops feathering.
In one embodiment of the invention, according to the of the testing result of the first pitch-controlled system and wind power generating set
The testing result of two pitch-controlled systems and third pitch-controlled system, sets the initial angle angle value of blade, if may include: the first variable pitch system
There are angle class failures for system, and there are the events of angle class for an only pitch-controlled system in the second pitch-controlled system and third pitch-controlled system
Barrier, then by the propeller pitch angle of the currently detected corresponding blade of pitch-controlled system that not there is no angle class failure, be set as initial angle
Angle value.
Specifically, there are angle class failures for the first pitch-controlled system, and in the second pitch-controlled system and third pitch-controlled system only
There are angle class failures, including following two situation for one pitch-controlled system:
The first situation: only there are angle class failures for the first pitch-controlled system and the second pitch-controlled system；
Second situation, only there are angle class failures for the first pitch-controlled system and third pitch-controlled system.
When only the first pitch-controlled system and the second pitch-controlled system indicate that angle is not present in third pitch-controlled system there are angle class failure
Spend class failure.At this point, initial angle angle value P0 is assigned a value of the corresponding propeller pitch angle P3 of currently detected third blade.
When only the first pitch-controlled system and third pitch-controlled system indicate that angle is not present in the second pitch-controlled system there are angle class failure
Spend class failure.At this point, initial angle angle value P0 is assigned a value of the corresponding propeller pitch angle P2 of the second currently detected blade.
Assuming that the feathering speed of the first blade determined is V0, minimum propeller pitch angle is Pr, and maximum propeller pitch angle is Ps.
Then the first duration T1 is the first blade with feathering speed V0, and feathering is to maximum propeller pitch angle since initial angle angle value P0
Required duration when Ps.
The first blade is set with the minimum feathering speed Vr in the corresponding feathering speed of different shutdown modes, from the first blade
Corresponding minimum propeller pitch angle Pr a length of T0 when required when starting feathering to maximum propeller pitch angle Ps.
It is understood that Vr is the minimum feathering speed in the corresponding feathering speed of different shutdown modes, V0 is current
The corresponding feathering speed of shutdown mode, then Vr and V0 meets: V0 >=Vr.
Pr is minimum propeller pitch angle, and initial angle angle value P0 is the currently detected corresponding propeller pitch angle P2 of the second blade or current
The corresponding propeller pitch angle P3 of the third blade detected.Then Pr and P0 meets: P0 >=Pr.
For V0 >=Vr, P0 >=Pr, then there is T0 >=T1.
Then opened at this time according to the trigger signal of the corresponding 87 ° of sensors sending of the first blade, the corresponding limit of the first blade
The signal and T1 being triggered are closed, the first blade of control stops feathering.
In one embodiment of the invention, if angle class failure is all not present in three pitch-controlled systems, current detection is indicated
To the corresponding propeller pitch angle of three blades be accurate propeller pitch angle.At this point it is possible to which initial angle angle value P0 is assigned a value of currently examining
The corresponding propeller pitch angle P1 of the first blade measured the or currently detected corresponding propeller pitch angle P2 of the second blade or current detection
The corresponding propeller pitch angle P3 of the third blade arrived or the first currently detected blade and the corresponding propeller pitch angle of the second blade
The average angle angle value of average angle angle value or the first currently detected blade and the corresponding propeller pitch angle of third blade is worked as
Before the average angle angle value or currently detected three paddles of the second blade and the corresponding propeller pitch angle of third blade that detect
The average angle angle value of the corresponding propeller pitch angle of leaf.If angle class failure, the embodiment of the present invention is all not present in three pitch-controlled systems
It is preferred that by initial angle angle value P0 is assigned a value of the corresponding propeller pitch angle P1 of the first currently detected blade or currently detected
The average angle angle value of two blades and the corresponding propeller pitch angle of third blade.
In one embodiment of the invention, it if three pitch-controlled systems all have angle class failure, indicates currently detected
The corresponding propeller pitch angle of three blades be inaccuracy propeller pitch angle.At this point, if initial angle angle value P0 is assigned a value of current detection
The corresponding propeller pitch angle P1 of the first blade arrived the or currently detected corresponding propeller pitch angle P2 or currently detected of the second blade
The corresponding propeller pitch angle P3 of third blade or the first currently detected blade and the corresponding propeller pitch angle of the second blade it is flat
The average angle angle value or current of equal angle value or the first currently detected blade and the corresponding propeller pitch angle of third blade
The average angle angle value or currently detected three blades of the second blade and the corresponding propeller pitch angle of third blade that detect
The average angle angle value of corresponding propeller pitch angle；It cannot be guaranteed that P0 >=Pr, and then it cannot guarantee that T0 is greater than or equal to T1.This
When T0 be likely larger than T1, it is also possible to be less than T1, it is also possible to uncertain equal to the size relation of T1, i.e. T0 and T1.Based on this, this hair
Bright embodiment is when controlling blade stopping feathering, according to the trigger signal of the corresponding 87 ° of sensors sending of the first blade, the first paddle
Signal, T1 and the T0 that the corresponding limit switch of leaf is triggered, control blade stop feathering.
Specifically, if receiving the trigger signal or receive the first blade that the corresponding 87 ° of sensors of the first blade issue
The signal or feathering duration that corresponding limit switch is triggered reach T1 or feathering duration reaches T0, then control the first blade and stop
Only feathering.
It is understood that T0 is to be determined according to minimum feathering speed Vr, minimum propeller pitch angle Pr and maximum propeller pitch angle Ps
Duration.
Based on foregoing description, the embodiment of the present invention according to the first duration, controlling blade to stop feathering may include: basis
The corresponding feathering movement of first duration, blade stops trigger signal, the corresponding limit of blade that the corresponding sensor of marker is sent
The signal that bit switch is triggered and the second duration for controlling blade stopping feathering, control blade stop feathering, wherein
Second duration is to be determined according to minimum feathering speed, minimum propeller pitch angle and maximum propeller pitch angle.Specifically, according to the first duration,
The corresponding feathering movement of blade stops the trigger signal of the corresponding sensor transmission of marker, the corresponding limit switch of blade is touched
The signal of hair and the second duration for stopping feathering for controlling blade, control blade stop feathering, if may include: to receive
Stop the trigger signal or receive the corresponding limit of blade that the corresponding sensor of marker issues to the corresponding feathering movement of blade
The signal or feathering duration that bit switch is triggered reach the first duration or feathering duration reaches the second duration, and control blade stops
Feathering.
The process and above-mentioned first pitch-controlled system of second pitch-controlled system and third pitch-controlled system control blade feathering control paddle
The process of leaf feathering is similar, and the embodiment of the present invention does not repeat it herein.Specifically refer to above-mentioned first pitch-controlled system control
The process of blade feathering processed.
The control method of blade feathering according to an embodiment of the present invention, toothed belt will not arrive at extreme position, Jin Erneng
Toothed belt fracture and the damage of toothed belt pressing plate are enough prevented, pitch motor can also be prevented to be in extreme position Shi Huifa in toothed belt
Raw stall causes pitch motor to burn or damage other circuits, influences the generation of wind power generating set security situation, can
Improve the safety of wind power generating set.
Corresponding with above-mentioned embodiment of the method, the embodiment of the present invention also provides a kind of control device of blade feathering.
As shown in Fig. 2, Fig. 2 shows the structural schematic diagrams of the control device of blade feathering provided in an embodiment of the present invention.
It may include:
Detection module 201 detects the first variable pitch of wind power generating set for responding the halt instruction of wind power generating set
System whether there is angle class failure.
Determining module 202 determines the corresponding blade of the first pitch-controlled system for the testing result according to the first pitch-controlled system
Stop the first duration of feathering.
Control module 203, for controlling blade and stopping feathering according to the first duration.
In one embodiment of the invention, the determining module 202 of the embodiment of the present invention may include:
Setup unit, for according to the testing result of the first pitch-controlled system and the second pitch-controlled system of wind power generating set
With the testing result of third pitch-controlled system, the initial angle angle value of blade is set；
First determination unit shuts down mould for determining the feathering speed of blade according to the corresponding shutdown mode of halt instruction
Formula is one of normal shutdown mode, quick shutdown mode and emergency shutdown mode；
Second determination unit, for according to initial angle angle value, identified feathering speed and the corresponding maximum paddle of blade
Elongation determines the first duration.
In one embodiment of the invention, the setup unit of the embodiment of the present invention, specifically can be used for:
If angle class failure, which is not present, in the first pitch-controlled system is set as initial for the propeller pitch angle of currently detected blade
Angle value.
In one embodiment of the invention, the setup unit of the embodiment of the present invention, specifically can be used for:
If only there are angle class failures for the first pitch-controlled system, by currently detected the second pitch-controlled system and third variable pitch
The average angle angle value of the propeller pitch angle of the corresponding blade of system, is set as initial angle angle value
In one embodiment of the invention, the setup unit of the embodiment of the present invention, specifically can be used for:
If there are angle class failures for the first pitch-controlled system, and only have a change in the second pitch-controlled system and third pitch-controlled system
There are angle class failures for oar system, then by the paddle of the currently detected corresponding blade of pitch-controlled system that not there is no angle class failure
Elongation is set as initial angle angle value
In one embodiment of the invention, the control module 203 of the embodiment of the present invention, specifically can be used for:
The trigger signal that is sent according to the first duration, sensor, the signal that is triggered of limit switch and for controlling paddle
Leaf stops the second duration of feathering, and control blade stops feathering, wherein the second duration is according to minimum feathering speed, blade pair
The corresponding maximum propeller pitch angle of the minimum propeller pitch angle and blade answered determines.
The embodiment of the invention also provides a kind of wind power generating sets, including blade feathering provided in an embodiment of the present invention
Control device.
It should be clear that the invention is not limited to specific configuration described above and shown in figure and processing.
For brevity, it is omitted here the detailed description to known method.In the above-described embodiments, several tools have been described and illustrated
The step of body, is as example.But method process of the invention is not limited to described and illustrated specific steps, this field
Technical staff can be variously modified, modification and addition after understanding spirit of the invention, or suitable between changing the step
Sequence.
It should also be noted that, the exemplary embodiment referred in the present invention, is retouched based on a series of step or device
State certain methods or system.But the present invention is not limited to the sequence of above-mentioned steps, that is to say, that can be according in embodiment
The sequence referred to executes step, may also be distinct from that the sequence in embodiment or several steps are performed simultaneously.
The above description is merely a specific embodiment, it is apparent to those skilled in the art that,
For convenience of description and succinctly, the system, module of foregoing description and the specific work process of unit can refer to preceding method
Corresponding process in embodiment, details are not described herein.It should be understood that scope of protection of the present invention is not limited thereto, it is any to be familiar with
Those skilled in the art in the technical scope disclosed by the present invention, can readily occur in various equivalent modifications or substitutions,
These modifications or substitutions should be covered by the protection scope of the present invention.
Claims (9)
1. a kind of control method of blade feathering, which is characterized in that the described method includes:
The halt instruction for responding wind power generating set detects the first pitch-controlled system of the wind power generating set with the presence or absence of angle
Class failure；
According to the testing result of first pitch-controlled system, determine that the corresponding blade of first pitch-controlled system stops the of feathering
One duration；
According to first duration, controls the blade and stop feathering；
The testing result according to first pitch-controlled system determines that the corresponding blade of first pitch-controlled system stops feathering
The first duration, comprising:
Become according to the second pitch-controlled system and third of the testing result of first pitch-controlled system and the wind power generating set
The testing result of oar system sets the initial angle angle value of the blade；
According to the corresponding shutdown mode of the halt instruction, the feathering speed of the blade is determined, the shutdown mode is normal
One of shutdown mode, quick shutdown mode and emergency shutdown mode；
According to the initial angle angle value, identified feathering speed and the corresponding maximum propeller pitch angle of the blade, determine described in
First duration；
It is described according to the testing result of first pitch-controlled system and the second pitch-controlled system of the wind power generating set and
The testing result of three pitch-controlled systems sets the initial angle angle value of the blade, comprising:
If only first pitch-controlled system is there are the angle class failure, by currently detected second pitch-controlled system and
The average angle angle value of the propeller pitch angle of the corresponding blade of the third pitch-controlled system, is set as the initial angle angle value.
2. the method according to claim 1, wherein the testing result according to first pitch-controlled system with
And the wind power generating set the second pitch-controlled system and third pitch-controlled system testing result, set the initial angle of the blade
Angle value, comprising:
If the angle class failure is not present in first pitch-controlled system, by the propeller pitch angle of the currently detected blade, if
It is set to the initial angle angle value.
3. the method according to claim 1, wherein the testing result according to first pitch-controlled system with
And the wind power generating set the second pitch-controlled system and third pitch-controlled system testing result, set the initial angle of the blade
Angle value, comprising:
If first pitch-controlled system is there are the angle class failure, and second pitch-controlled system and the third pitch-controlled system
In only a pitch-controlled system there are the angle class failures, then by the currently detected change that not there is no the angle class failure
The propeller pitch angle of the corresponding blade of oar system is set as the initial angle angle value.
4. controlling the blade and stopping the method according to claim 1, wherein described according to first duration
Only feathering, comprising:
Stop the triggering letter that the corresponding sensor of marker is sent according to first duration, the corresponding feathering movement of the blade
Number, the signal that is triggered of the corresponding limit switch of the blade and the second duration for stopping feathering for controlling the blade,
It controls the blade and stops feathering, wherein second duration is according to minimum feathering speed, minimum propeller pitch angle and maximum pitch
What angle determined.
5. a kind of control device of blade feathering, which is characterized in that described device includes:
Detection module detects the first variable pitch system of the wind power generating set for responding the halt instruction of wind power generating set
System whether there is angle class failure；
Determining module determines the corresponding paddle of first pitch-controlled system for the testing result according to first pitch-controlled system
First duration of leaf stopping feathering；
Control module, for controlling the blade and stopping feathering according to first duration；
The determining module, comprising:
Setup unit, for according to the testing result of first pitch-controlled system and the second variable pitch of the wind power generating set
The testing result of system and third pitch-controlled system sets the initial angle angle value of the blade；
First determination unit, for determining the feathering speed of the blade, institute according to the corresponding shutdown mode of the halt instruction
Stating shutdown mode is one of normal shutdown mode, quick shutdown mode and emergency shutdown mode；
Second determination unit, for corresponding most according to the initial angle angle value, identified feathering speed and the blade
Big propeller pitch angle determines first duration；
The setup unit, is specifically used for:
If only first pitch-controlled system is there are the angle class failure, by currently detected second pitch-controlled system and
The average angle angle value of the propeller pitch angle of the corresponding blade of the third pitch-controlled system, is set as the initial angle angle value.
6. device according to claim 5, which is characterized in that the setup unit is specifically used for:
If the angle class failure is not present in first pitch-controlled system, by the propeller pitch angle of the currently detected blade, if
It is set to the initial angle angle value.
7. device according to claim 5, which is characterized in that the setup unit is specifically used for:
If first pitch-controlled system is there are the angle class failure, and second pitch-controlled system and the third pitch-controlled system
In only a pitch-controlled system there are the angle class failures, then by the currently detected change that not there is no the angle class failure
The propeller pitch angle of the corresponding blade of oar system is set as the initial angle angle value.
8. device according to claim 5, which is characterized in that the control module is specifically used for:
Stop the triggering letter that the corresponding sensor of marker is sent according to first duration, the corresponding feathering movement of the blade
Number, the signal that is triggered of the corresponding limit switch of the blade and the second duration for stopping feathering for controlling the blade,
It controls the blade and stops feathering, wherein second duration is according to minimum feathering speed, minimum propeller pitch angle and maximum pitch
What angle determined.
9. a kind of wind power generating set characterized by comprising the control of the described in any item blade featherings of claim 5 to 8
Device.
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| CN201711342532.3A CN108167117B (en) | 2017-12-14 | 2017-12-14 | Control method and device for feathering of blades and wind generating set |
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| CN112523946B (en) * | 2019-09-17 | 2022-10-18 | 北京金风科创风电设备有限公司 | Variable pitch control method and device for wind generating set and medium |
| CN113007035B (en) * | 2019-12-20 | 2022-07-05 | 新疆金风科技股份有限公司 | Tooth belt fault detection method, device and equipment of variable pitch system |
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| CN101936255B (en) * | 2010-09-15 | 2012-07-04 | 三一电气有限责任公司 | Feathering control system of electric variable pitch system |
| CN102287331B (en) * | 2011-07-27 | 2013-05-29 | 国电联合动力技术有限公司 | Urgent feathering triggering system and method for variable pitch wind generator system |
| US9709033B2 (en) * | 2012-04-23 | 2017-07-18 | Vestas Wind Systems A/S | Method for controlling a wind turbine during shutdown |
| US9496813B2 (en) * | 2012-07-19 | 2016-11-15 | Vestas Wind Systems A/S | Method of operating a wind turbine as well as a system suitable thereof |
| CN103452755B (en) * | 2013-01-17 | 2016-01-20 | 成都阜特科技股份有限公司 | A kind of controlling method of putting away the oars of wind power generating set direct current variable pitch control system |
| US10030630B2 (en) * | 2013-04-22 | 2018-07-24 | Vestas Wind Systems A/S | Method for controlling a wind turbine during shutdown |
| CN105484937B (en) * | 2015-12-30 | 2019-02-15 | 北京天诚同创电气有限公司 | Control method and device for variable pitch system of wind generating set |
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