CN106930905A - A kind of wind generator set blade ice based on blade modal detection carries operation safety control method and system - Google Patents
A kind of wind generator set blade ice based on blade modal detection carries operation safety control method and system Download PDFInfo
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- CN106930905A CN106930905A CN201710280422.2A CN201710280422A CN106930905A CN 106930905 A CN106930905 A CN 106930905A CN 201710280422 A CN201710280422 A CN 201710280422A CN 106930905 A CN106930905 A CN 106930905A
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- wind wheel
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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
-
- 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
- F03D7/028—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling wind motor output power
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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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- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
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- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
A kind of wind generator set blade ice based on blade modal detection carries operation safety control method, the described method comprises the following steps：A) signal is judged according to weather environment, triggers the startup of blade ice carrying row safety control system and exit；B) judge that blade ice carries operation risk grade according to wind wheel icing gross weight and wind wheel rotation 1P vibration accelerations amplitude；C) operation risk grade output power of the assembling unit control signal is carried according to blade ice, chooses predetermined power limit value corresponding with blade ice load operation risk grade, blade ice carries operation risk grade and is judged to stop unit operation during danger.And a kind of wind generator set blade ice carrying row safety control system based on blade modal detection is provided.The present invention avoids the blade cracking that blade ice carrying row brings, fracture and unit such as collapses at major accident, the operation safety of effective guarantee unit and unit operation reliability, the lifting generated energy.
Description
Technical field
Operation safety control method is carried the present invention relates to a kind of wind generator set blade ice based on blade modal detection
And system.The operation security control under Large-scale Wind Turbines refrigerated environment is mainly used in, blade ice carrying row can be avoided
Bring blade cracking, fracture, unit collapses wait major accident, improve unit operation safety, raising unit operation reliability.
Background technology
South China majority wind power plants in the winter time, the early spring all there is icing phenomenon, the particularly Yunnan-Guizhou Plateau, Guangxi, Hubei
With the area such as Hunan, atmospheric temperature is low and high humidity, and wind power generating set often occurs blade ice carrying row in the process of running
Situation.Blade icing is concentrated mainly near blade inlet edge, causes vane airfoil profile geometry to change, and blade is exerted oneself under performance
Drop.When icing is more and more, when three blade icing weight differentials are larger, wind wheel is caused serious unbalanced moments occur, it is anxious
Acute greatly blade performance load, the catastrophe failure such as cause blade ftracture, fracture, or even evoke whole machine intrinsic frequency, occur collapsing,
Wind power generating set operation safety is had a strong impact on.
Existing technology is concentrated mainly on blade clearing ice technology, with blade inner chamber hot blast clearing ice technology and blade inlet edge electricity
Based on heating film laying clearing ice technology.Blade clearing ice technology is required carries out equipment installation before blade dispatches from the factory, for having run
Wind turbines, it is difficult to install deicing equipment additional, if without deicing equipment, in the case of blade icing, stoppage protection can only be taken,
Cause batch wind power generating set in the winter time, the early spring for a long time shut down, greatly reduce the generated energy of wind power generating set.
The content of the invention
Can only take stoppage protection in the case of existing wind generator set blade icing, reduce generated energy to overcome
Deficiency, the invention provides a kind of blade for avoiding blade ice carrying row from bringing cracking, fracture with unit collapse etc. major accident,
The operation safety and unit operation reliability of effective guarantee unit, the wind-power electricity generation based on blade modal detection of lifting generated energy
Turbines vane ice carries operation safety control method and system.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of wind generator set blade ice based on blade modal detection carries operation safety control method, methods described bag
Include：
A) signal is judged according to weather environment, triggers the startup of blade ice carrying row safety control system and exit；
B) judge that blade ice carries operation risk grade according to wind icing gross weight and wind wheel rotation 1P vibration accelerations amplitude；
C) operation risk grade output power of the assembling unit control signal is carried according to blade ice, chooses and carry operation risk with blade ice
The corresponding predetermined power limit value of grade, blade ice carries operation risk grade and is judged to stop unit operation during danger.
Further, in the step b), provide blade ice and carry operation risk grade and power control strategy, according to different
Wind wheel icing gross weight and wind wheel rotation 1P vibration acceleration amplitudes, determine that different blade ice carry operation risk grade, and press
According to different brackets setting power limit value.
A kind of wind generator set blade ice carrying row safety control system based on blade modal detection, the system bag
Include：
Weather environment detection module, for calculating meteorological freezing environment according to atmospheric temperature data and atmospheric humidity data
Judge signal；
Blade modal detection module, for detecting the first natural frequency of blade, and calculates every blade icing weight, and
Further calculate wind wheel icing gross weight and wind wheel rotation 1P vibration acceleration amplitudes；
Blade ice carrying row safety control module, for judging signal triggering wind power generating set according to meteorological freezing environment
The startup of blade ice carrying row safety control system and exit；According to wind wheel icing gross weight and wind wheel rotation 1P vibration accelerations
Amplitude obtains power of the assembling unit control signal.
Further, in the blade ice carrying row safety control module, provide blade ice and carry operation risk grade and power
Control strategy, according to different wind wheel icing gross weights and wind wheel rotation 1P vibration acceleration amplitudes, determines different blade ice
Operation risk grade is carried, and according to different brackets setting power limit value.
Further, the weather environment detection module includes atmosphere temperature transducer, atmospheric humidity sensor and meteorology
Freezing environment determination module, calculates meteorological freezing environment and judges signal according to atmospheric temperature data and atmospheric humidity data.
The weather environment detection module is arranged on engine room cover of wind turbine lateral tail.
The blade modal detection module is included at optical fiber raster vibration sensor, fiber Bragg grating (FBG) demodulator and vibration signal
Reason device, vibration electrical signal data is converted to by optical fiber raster vibration signal, and calculating blade single order according to blade vibration data consolidates
There is frequency, further calculate every blade icing weight, and then calculate wind wheel icing gross weight and wind wheel rotation 1P vibrations
Acceleration amplitude.
The optical fiber raster vibration sensor is arranged on blade interior cavity, fiber Bragg grating (FBG) demodulator and vibration signal processing
Device is arranged on wheel hub.
Beneficial effects of the present invention are mainly manifested in：Wind turbines automatic detection is set to judge whether weather environment freezes,
Be able to can be avoided according to wind wheel icing gross weight operation security control scheme different with wind wheel rotation 1P vibration accelerations amplitude formulation
Blade that blade ice carrying row brings cracking, fracture, unit collapses waits major accident, improves the operation safety of unit, raising machine
Group operational reliability.
Brief description of the drawings
Fig. 1 is a kind of wind generator set blade ice carrying row safety control system based on blade modal detection of the present invention
Schematic diagram；
Fig. 2 is blade modal detection module schematic diagram of the present invention；
Fig. 3 is a kind of wind generator set blade ice carrying row safety control system based on blade modal detection of the present invention
Structured flowchart.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
1~Fig. 3 of reference picture, a kind of wind generator set blade ice carrying row security control side based on blade modal detection
Method, methods described includes：
A) signal is judged according to weather environment, triggering blade frost runs the startup of safety control system and exits；
B) judge that blade ice carries operation risk etc. according to wind wheel icing gross weight and wind wheel rotation 1P vibration accelerations amplitude
Level；
C) operation risk grade output power of the assembling unit control signal is carried according to blade ice, chooses and carry operation risk with blade ice
The corresponding predetermined power limit value of grade, blade ice carries operation risk grade and is judged to stop unit operation during danger.
Further, in the step b), provide blade ice and carry operation risk grade and power control strategy, according to different
Wind wheel icing gross weight and wind wheel rotation 1P vibration acceleration amplitudes, determine that different blade ice carry operation risk grade, and press
According to different brackets setting power limit value.
A kind of wind generator set blade ice carrying row safety control system based on blade modal detection, the system bag
Include：
Weather environment detection module, for calculating meteorological freezing environment according to atmospheric temperature data and atmospheric humidity data
Judge signal；
Blade modal detection module, for detecting the first natural frequency of blade, and calculates every blade icing weight, and
Further calculate wind wheel rotation 1P vibration acceleration amplitudes；
Blade ice carrying row safety control module, for judging signal triggering wind power generating set according to meteorological freezing environment
The startup of blade ice carrying row safety control system and exit；According to different wind wheel icing gross weights and wind wheel rotation 1P vibrations
Acceleration amplitude obtains power of the assembling unit control signal.
Further, in the blade ice carrying row safety control module, provide blade ice and carry operation risk grade and power
Control strategy, according to different wind wheel icing gross weights and wind wheel rotation 1P vibration acceleration amplitudes, determines different blade ice
Operation risk grade is carried, and according to different brackets setting power limit value.
The wind generator set blade ice carrying row safety control system schematic diagram of the present embodiment is as shown in figure 1, main bag
It is 3, blade modal detection module 2 and blade ice carrying row safety control module 4 to include weather environment detection module, and 1 is light in figure
Fine grating vibration sensor.The meteorological freezing environment of the weather environment detection module detection judges signal input blade ice carrying
Row safety control module, and blade modal detection module detects the first natural frequency of blade, and calculate every blade icing weight
Amount, and further calculate wind wheel icing gross weight and wind wheel rotation 1P vibration accelerations amplitude input blade ice carrying row safety
Control module, ice carrying row safety control module is according to different wind wheel icing gross weights and wind wheel rotation 1P vibration acceleration width
Value output power of the assembling unit control signal.
The weather environment detection module is arranged on engine room cover of wind turbine lateral tail, is sensed by atmospheric temperature
Device, atmospheric humidity sensor and meteorological freezing environment determination module composition, according to atmospheric temperature data and atmospheric humidity data meter
Calculate meteorological freezing environment and judge signal, for trigger wind generator set blade ice carrying row safety control system startup and
Exit.
Further, the meteorological freezing environment determination module,
Citing：According to atmospheric humidity (RH) >=85%＆＆ atmospheric temperatures (DEG C)≤2 DEG C, environment is judged to freeze, start wind
Power generator group blade ice carrying row safety control system.According to atmospheric humidity (RH)<85% or atmospheric temperature (DEG C)>2 DEG C, sentence
Determine environment not freezing, then exit wind power generating set ice carrying row safety control system.
The blade modal detection module schematic diagram is as shown in Fig. 2 including optical fiber raster vibration sensor 21, fiber grating
(FBG) demodulator and vibration signal processing device 22, optical fiber raster vibration sensor are arranged on blade interior cavity, fiber Bragg grating (FBG) demodulator
It is arranged on wheel hub with vibration signal processing device.The blade modal detection module includes：By the conversion of optical fiber raster vibration signal
It is vibration electrical signal data, blade first natural frequency is calculated according to blade vibration data, further calculates every blade
Icing weight, and then calculate wind wheel icing gross weight and wind wheel rotation 1P vibration acceleration amplitudes.
Further, it is described that the every icing weight of blade is calculated according to blade first natural frequency, can be according to formula (1.1)
(1.2) draw：
In formula, k is the stiffness coefficient of blade, and under the conditions of not icing, leaf quality is m0, its intrinsic frequency is f0；Icing
Under the conditions of, by vibrating electrical signal data, calculate the intrinsic frequency f of icing blade1；Can be derived by formula (1.2) and covered
The quality m of ice blade1, by contrasting m1And m0, icing weight can be calculated.
Further, the wind wheel rotation 1P vibration acceleration amplitudes, can be solved by below equation：
In formula, M is wind wheel system quality, and C is wind wheel system damping, and K is wind wheel system rigidity, and every unit design is completed
Afterwards, above three parameter is all given value；It is the centrifugal force produced by icing quality,
Wherein miIt is the icing quality of i-th blade, r is distance of the vane centroid to wind wheel pivot, and ω is wind wheel anglec of rotation speed
Degree；A is wind wheel rotation 1P vibration acceleration amplitudes in formula, and v is wind wheel rotation 1P vibration velocities, and x is wind wheel rotation 1P vibrations
Displacement.
The blade ice carrying row safety control module system architecture diagram as shown in figure 3, including：Examined according to weather environment
The weather environment for surveying module judges signal, and triggering blade frost runs the startup of safety control system and exits；According to different
Wind wheel icing gross weight and wind wheel rotation 1P vibration accelerations amplitude judge that blade ice carries operation risk grade；Carried according to blade ice
Operation risk grade exports power of the assembling unit control signal.Table 1 lists certain 2MW wind generator set blades ice and carries operation risk etc.
Level and power control strategy
Table 1 certain 2MW wind generator set blades ice load operation risk grade and power control strategy
Blade frost operation safety control module and method formulate different operation control strategies according to operation risk grade,
It is shown in Table 1.In the case of the slight icing of blade, wind wheel icing gross weight is less than 25kg and unit wind wheel rotation 1P vibration acceleration width
Value is smaller, and the power of the assembling unit is limited in 0.7 times of rated operating range.In the case of blade moderate icing, wind wheel icing gross weight
Between 25kg-50kg and unit wind wheel rotation 1P vibration accelerations amplitude is in moderate level, the power of the assembling unit is limited in 0.5 times
In rated operating range.In the case of blade severe icing, wind wheel icing gross weight is between 50kg-100kg and unit wind wheel
Rotation 1P vibration accelerations amplitude is in higher level, and the power of the assembling unit is limited in 0.3 times of rated operating range.In blade icing
Under dangerous situation, unit answers stoppage protection, improves unit survival ability in the presence of a harsh environment, it is ensured that the design longevity of unit
Life.
Finally it should be noted that：The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention,
Although being described in detail to the present invention with reference to the foregoing embodiments, for a person skilled in the art, it still may be used
Revised with to the technical scheme described in previous embodiment, or equivalent is carried out to which part technical characteristic.It is all
Within the spirit and principles in the present invention, any revision, equivalent, improvement for being made etc., should be included in guarantor of the invention
In the range of shield.
Claims (8)
1. a kind of wind generator set blade ice based on blade modal detection carries operation safety control method, it is characterised in that：
Methods described includes：
A) signal is judged according to weather environment, triggers the startup of blade ice carrying row safety control system and exit；
B) judge that blade ice carries operation risk grade according to wind wheel icing gross weight and wind wheel rotation 1P vibration accelerations amplitude；
C) operation risk grade output power of the assembling unit control signal is carried according to blade ice, chooses and carry operation risk grade with blade ice
Corresponding predetermined power limit value, blade ice carries operation risk grade and is judged to stop unit operation during danger.
2. a kind of wind generator set blade ice carrying row security control based on blade modal detection as claimed in claim 1
Method, it is characterised in that：In the step b), provide blade ice and carry operation risk grade and power control strategy, according to difference
Wind wheel icing gross weight and wind wheel rotation 1P vibration acceleration amplitudes, determine that different blade ice carry operation risk grades, and
According to different brackets setting power limit value.
3. the wind generator set blade ice based on blade modal detection as claimed in claim 1 carries operation safety control method
The system of realization, it is characterised in that：The system includes：
Weather environment detection module, judges for calculating meteorological freezing environment according to atmospheric temperature data and atmospheric humidity data
Signal；
Blade modal detection module, for detecting the first natural frequency of blade, and calculates the every icing weight of blade, goes forward side by side
One step calculates wind wheel icing gross weight and wind wheel rotation 1P vibration acceleration amplitudes；
Blade ice carrying row safety control module, for judging signal triggering wind generator set blade according to meteorological freezing environment
The startup of ice carrying row safety control system and exit；1P vibration acceleration amplitudes are rotated according to wind wheel and obtains power of the assembling unit control
Signal.
4. system as claimed in claim 3, it is characterised in that：In the blade ice carrying row safety control module, leaf is given
Flake ice carries operation risk grade and power control strategy, accelerates according to different wind wheel icing gross weights and wind wheel rotation 1P vibrations
Degree amplitude, determines that different blade ice carry operation risk grade, and according to different brackets setting power limit value.
5. the system as described in claim 3 or 4, it is characterised in that：The weather environment detection module is passed including atmospheric temperature
Sensor, atmospheric humidity sensor and meteorological freezing environment determination module, calculate according to atmospheric temperature data and atmospheric humidity data
Outlet judges signal as freezing environment.
6. system as claimed in claim 5, it is characterised in that the weather environment detection module is arranged on wind power generating set
Engine room cover lateral tail.
7. the system as described in claim 3 or 4, it is characterised in that：The blade modal detection module shakes including fiber grating
Dynamic sensor, fiber Bragg grating (FBG) demodulator and vibration signal processing device, vibration telecommunications number is converted to by optical fiber raster vibration signal
According to, blade first natural frequency is calculated according to blade vibration data, and then every blade icing weight is calculated, and then calculate
Go out wind wheel icing gross weight and wind wheel rotation 1P vibration acceleration amplitudes.
8. system as claimed in claim 7, it is characterised in that：The optical fiber raster vibration sensor is arranged on blade interior chamber
Body, fiber Bragg grating (FBG) demodulator and vibration signal processing device are arranged on wheel hub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710280422.2A CN106930905B (en) | 2017-04-26 | 2017-04-26 | Method and system for controlling ice-loaded operation safety of blades of wind generating set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710280422.2A CN106930905B (en) | 2017-04-26 | 2017-04-26 | Method and system for controlling ice-loaded operation safety of blades of wind generating set |
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| CN106930905A true CN106930905A (en) | 2017-07-07 |
| CN106930905B CN106930905B (en) | 2023-08-29 |
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Cited By (7)
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| CN107620681A (en) * | 2017-10-23 | 2018-01-23 | 北京金风科创风电设备有限公司 | Heating control system and method for blade of wind generating set |
| CN107829888A (en) * | 2017-11-20 | 2018-03-23 | 浙江运达风电股份有限公司 | A kind of the wind power generating set blade de-icing method and system of the heating of partition type hot-air blower |
| CN107870377A (en) * | 2017-10-12 | 2018-04-03 | 华能国际电力股份有限公司 | Fixing device and method for meteorological sensor outside nacelle of wind turbine generator set |
| CN109973332A (en) * | 2017-12-27 | 2019-07-05 | 浙江中自庆安新能源技术有限公司 | Blade of wind-driven generator icing on-line monitoring method and device |
| CN111188742A (en) * | 2020-01-22 | 2020-05-22 | 新疆华电苇湖梁新能源有限公司 | Wind generating set blade icing detection method based on optical fiber acceleration sensor |
| CN113915080A (en) * | 2021-11-15 | 2022-01-11 | 四川建筑职业技术学院 | Blade icing operation detection and control method for wind generating set |
| CN116624347A (en) * | 2023-05-19 | 2023-08-22 | 华润电力技术研究院有限公司 | Method, system and device for monitoring icing of fan blade |
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| CN116624347A (en) * | 2023-05-19 | 2023-08-22 | 华润电力技术研究院有限公司 | Method, system and device for monitoring icing of fan blade |
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