CN106351807B - A kind of de-icing method and its deicing system of wind generator set blade icing - Google Patents
A kind of de-icing method and its deicing system of wind generator set blade icing Download PDFInfo
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- CN106351807B CN106351807B CN201510415136.3A CN201510415136A CN106351807B CN 106351807 B CN106351807 B CN 106351807B CN 201510415136 A CN201510415136 A CN 201510415136A CN 106351807 B CN106351807 B CN 106351807B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
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- Y02E10/72—Wind turbines with rotation axis in wind direction
Abstract
The de-icing method and its deicing system of a kind of wind generator set blade icing provided by the invention, it can be on the basis of efficiently and accurately calculating ice cover on wind generator set blade, fast and effeciently carry out the deicing operation of blade, simultaneously, the temperature conditions that can be measured according to ice cover situation and currently opens blade heating system in real time and then achievees the purpose that ice-melt, avoids the excessively high damaged blade performance of temperature caused by due to heating time is too long.
Description
Technical field
The present invention relates to wind generator set blade deicing field more particularly to a kind of wind generator set blade icing
De-icing method and its deicing system.
Background technique
Currently, the wind-resources in China be substantially distributed in the world of ice and snow the north and the very big south of moisture, environment it is equal
It is extremely severe.When wind power generating set is run under the following cryogenic conditions of zero centigrade, if encountering humid air, rainwater, salt
Mist, ice and snow when especially encountering supercooling water droplet, can usually freeze phenomenon.It, can be right after wind generator set blade icing
The normal operation of wind power generating set causes serious harm.
Biggish ice can be generated after blade icing to carry, and substantially reduce the service life of blade.Simultaneously as load is each
Ice load on blade is not quite similar, so that the unbalanced load of wind-power electricity generation group increases, it, will to unit if unit continues to run
Generate greatly harm；If shutting down, the utilization rate of unit is substantially reduced.
After blade surface icing, aerofoil profile at various locations has different degrees of variation, affects the liter resistance of aerofoil profile
Coefficient will greatly affected the power output of unit, reduce the generating efficiency of unit.On the other hand, after blade surface icing, such as
Fruit temperature increases, and ice cube falls off, can be to the unit and personnel component security threat closed on along with high blade tip revolving speed.
Mode that there are two types of the measures usually that wind power plant is taken for blade icing,
First, the wind power generating set of stoppage in transit blade icing, the icing to blade table melts situation restarting wind-force hair
Motor group.The shortcomings that this kind of mode: needing artificial judgment icing situation, accordingly to determine whether needing to shut down and start, artificially
Factor interference is big, and inaccuracy, there are serious security risks etc..
Second, the blade icing situation of wind power generating set is monitored by resistance strain etc., however due to wind
Power generator group self structure and running environment are extremely badly unable to operate normally, and are such as being struck by lightning, salt fog, round the clock height
Temperature easily fails under the situations such as strong electromagnetic；Meanwhile such sensor wire is complicated, is not easy to large capacity networking measurement.
Summary of the invention
The purpose of the present invention is for defect existing for above-mentioned background technique, provide a kind of can quickly and efficiently remove defoliation
The de-icing method and its deicing system of the wind generator set blade icing of piece icing.
To achieve the above object, a kind of de-icing method of wind generator set blade icing of one of present invention and its deicing
System is applied in horizontal axis wind-driven generator group, the deicing operation suitable for blade under cryogenic conditions, comprising:
Step E1:
N blade profile is taken on each blade from blade root to blade tip, in the position that blade profile main shaft and blade profile intersect
Stickup sensor panel is set, and each blade profile is parallel with blade root flange face, blade tip is not laid with sensor panel, takes blade
Arbitrary section i waves moment of flexure and shimmy moment of flexure on each section of blade by calculating after sensor panel acquisition dependent variable；
Step E2:
Control system judges the outside air temperature t that wind speed wind direction sensor is sent into1Whether preset temperature penalties T is greater than0If t1
≤T0And wind speed in wind-driven generator history data, blade pitch angle, blade azimuth angle with currently survey it is each corresponding
Error between data is under error range enabled condition, to the shimmy moment of flexure of the blade root currently surveyed and error range enabled condition
Under historical data in the shimmy moment of flexure of blade root compare, meanwhile, based on the shimmy moment of flexure in each section, first calculate each point of blade
The ice cover of section calculates the ice cover m of entire blade againiceIf t1> T0, then control system is failure to actuate；
Step E3:
Control system judges the ice cover m of entire bladeiceWhether it is greater than ice cover penalties m, such as larger than then controls blade and add
Hot systems starting；
Step E4:
Control system is according to preset temperature penalties T1、T2, ice cover penalties m and respectively leaf temperature t2, blade ice cover
miceBetween comparison result control blade heating system start and stop, if leaf temperature t during blade heating system heats2It is super
Cross preset temperature penalties T1, stop heating immediately；If stopping blade heating system rear blade temperature t2During decline, entire leaf
The ice cover m of pieceiceGreater than preset ice cover penalties m, to leaf temperature t2Drop to preset temperature penalties T2After restart
Blade heating system, wherein leaf temperature t2It is the temperature value of the variation of an actual measurement, and t1> t2。
Further, blade profile main shaft is constituted by waving direction main shaft and edgewise direction main shaft, wave direction main shaft and
The sensor panel that blade profile intersection location is pasted waves moment of flexure for measuring；Edgewise direction main shaft and blade profile intersect position
The sensor panel of stickup is set for measuring shimmy moment of flexure.
Further, n-th of section is d, and d > 0.5m at a distance from blade tip, i.e., the last one section and blade tip away from
From for d, and d > 0.5m.
Further, it calculates at blade arbitrary section i and waves moment MyiVariation delta Myi, pass through
It is calculated,
Wherein, Δ my_ice(k)For the kth section blade ice cover calculated according to formula (1), k=i ... n, 1≤i≤n, and i is
Natural number, n >=1, and n are natural number, and θ is blade pitch angle, RkFor the radius of section k, i.e. section k is at a distance from blade root, RiFor
The radius of section i, Rk+1For the radius of section k+1；
Under error range enabled condition, the shimmy moment M at blade arbitrary section i is calculatedxiVariation delta Mxi, lead to
It crosses
It is calculated,
Wherein, Δ mx_ice(k)For the kth section blade ice cover calculated according to formula (2).
Further, wind speed, blade azimuth angle, each history data of blade pitch angle and current actual measurement corresponding data
Error is less than 5%.
Further, the ice cover that blade is respectively segmented is calculated paragraph by paragraph from blade tip to blade root direction, according to the last one section
Wave moment MyiWith shimmy moment Mxi, i.e. moment M is waved in n-th sectionyiWith shimmy moment Mxi, n-th section can be calculated
Blade ice cover Δ my_ice(n)With Δ mx_ice(n), then by Δ my_ice(n)With Δ mx_ice(n)It substitutes into formula (1) and (2) and asks respectively
Obtain (n-1)th section of ice cover Δ my_ice(n-1)With Δ mx_ice(n-1), and so on, all blade sections of same blade can be acquired
Ice cover.
Further, pass through
And
Ice cover of the calculating arbitrary section i to blade tip, wherein my_iceArbitrary section i covering to blade tip under direction is waved for blade
Ice amount, mx_iceFor the ice cover of arbitrary section i under blade edgewise direction to blade tip.
Further, it answers equal and can be mutually authenticated using waving the blade ice cover that moment of flexure and shimmy moment of flexure acquire, it is right
my_iceAnd mx_iceThe sum of be averaging the ice cover m for obtaining entire bladeice, that is, pass through
mice=(my_ice+mx_ice)/2 (5)
Seek the ice cover m of entire bladeice。
Further, preset temperature penalties T0Value range be 0≤T0≤1。
A kind of wind generator set blade deicing system that the two of the present invention provide, is applied in horizontal axis wind-driven generator group
On, the deicing operation suitable for cryogenic conditions apparatus for lower wind generating set blade a comprising control system；
One blade heating system, the blade heating system are covered on leaf including at least the thawing that is used for that edge in front of the blade is arranged
The heating film of the up-front ice of piece, and heating film is fixed carbon resister material；
One wind speed wind direction sensor, for acquiring wind speed, wind direction, outside air temperature data and feeding back to control system；
One encoder, for acquiring blade azimuth angle and blade pitch angle signal and feeding back to control system；
One power supply system, at least to control system, blade heating system, wind speed wind direction sensor, encoder supply
Electric energy；
Several sensor panels being fixed on wind generator set blade, for acquiring and feeding back blade to control system
Dependent variable situation of change；
Control system is used to receive wind speed and direction air temperature signal, the strain measurement result of sensor panel feedback, encoder
The blade azimuth angle of acquisition and pitch angle signal, control blade heating system carry out controllable heating movement；
Each fiber Bragg grating strain sensor and a temperature sensor constitute a sensor panel, fiber grating strain sensor
Device and temperature sensor form sensor panel after being connected by several optical fiber in such a way that glass encapsulates, and temperature sensor is used
The dependent variable error caused by elimination fiber Bragg grating strain sensor is influenced as temperature.
In conclusion the present invention a kind of de-icing method and its deicing system of wind generator set blade icing, Ke Yiyou
On the basis of effect and the accurately ice cover of calculating wind generator set blade, the deicing operation of blade is fast and effeciently carried out,
Meanwhile the temperature conditions that can be measured according to ice cover situation and currently opens blade heating system in real time and then is reaching ice-melt
Purpose simultaneously, temperature is excessively high caused by avoiding due to heating time is too long causes Blade Properties.
Detailed description of the invention
Fig. 1 is the trunnion axis of the de-icing method and its deicing system using a kind of wind generator set blade icing of the present invention
The schematic diagram of wind power generating set.
Fig. 2 is a kind of de-icing method of wind generator set blade icing of the present invention and its sensor panel of deicing system
Installation site distribution schematic diagram in three blades, black small cube indicates the installation site of sensor panel in figure.
The de-icing method and its sensor cover in deicing system that Fig. 3 is a kind of wind generator set blade icing of the present invention
Schematic view of the mounting position of the plate on same blade, pore indicates installation site of the sensor panel on blade, root in figure
Moment M is waved according to what the dependent variable that sensor panel measurement obtains calculated each sectionyWith shimmy moment Mx。
Fig. 4 is a kind of de-icing method of wind generator set blade icing of the present invention and its sensor that deicing system is addressed
Panel brief configuration schematic diagram.
Fig. 5 is applied to a kind of de-icing method of wind generator set blade icing of the present invention and its blade of deicing system is appointed
The sensor panel schematic view of the mounting position anticipated on the i of section, black small cube indicates peace of the sensor panel on the i of section in figure
Holding position, pore indicates neutral axis in figure.
Fig. 6 is the part of a kind of de-icing method of wind generator set blade icing of the present invention and its blade of deicing system
Schematic diagram, long square bar indicates heating film in the figure.
Specific embodiment
By the technology contents that the present invention will be described in detail, construction feature, reached purpose and effect, hereby enumerates embodiment below
And attached drawing is cooperated to be explained in detail.
Fig. 1 to Fig. 6 is please referred to, a kind of deicing system of wind generator set blade icing of one of present invention is applied
Deicing operation in horizontal axis wind-driven generator group, suitable for cryogenic conditions apparatus for lower wind generating set blade comprising:
One control system；
One blade heating system, the blade heating system are covered on leaf including at least the thawing that is used for that edge in front of the blade is arranged
The heating film of the up-front ice of piece, and heating film is fixed carbon resister material；
One wind speed wind direction sensor, for acquiring wind speed, wind direction, outside air temperature data and feeding back to control system；
One encoder, for acquiring blade azimuth angle and blade pitch angle signal and feeding back to control system；
One power supply system, at least to control system, blade heating system, wind speed wind direction sensor, encoder supply
Electric energy；
Several sensor panels being fixed on wind generator set blade, for acquiring and feeding back blade to control system
Dependent variable situation of change；
Control system is used to receive wind speed and direction air temperature signal, the strain measurement result of sensor panel feedback, encoder
The blade azimuth angle of acquisition and pitch angle signal, control blade heating system carry out controllable heating movement；
Each fiber Bragg grating strain sensor and a temperature sensor constitute a sensor panel, fiber grating strain sensor
Device and temperature sensor form sensor panel after being connected by several optical fiber in such a way that glass encapsulates, and temperature sensor is used
In acquisition leaf temperature and eliminate fiber Bragg grating strain sensor dependent variable error as caused by temperature influence.
Sensor panel is pasted in the position that blade profile main shaft and blade profile intersect.Blade profile main shaft is by the side of waving
It is constituted to main shaft and edgewise direction main shaft, waves the sensor panel of direction main shaft and the stickup of blade profile intersection location for surveying
Amount waves moment of flexure；The sensor panel that edgewise direction main shaft and blade profile intersection location are pasted is for measuring shimmy moment of flexure.It waves
It is respectively independent to wave direction and edgewise direction.It waves that direction and edgewise direction are respectively independent, that is, waves moment of flexure on direction not
It will lead to the strain-responsive in edgewise direction, the moment of flexure in edgewise direction not will lead to the strain-responsive waved on direction.
Fig. 2 to Fig. 5 is please referred to, a kind of de-icing method of wind generator set blade icing of the present invention is illustrated and its is removed
Ice system by blade root to blade tip direction each section inner sensor panel of blade installation site, i.e., each blade by blade root to
Blade tip takes n (n >=1, and n is natural number) a section, and blade tip section is not laid with sensor panel.Further, n-th section with
The distance of blade tip is d, and d > 0.5m, i.e. the last one section are d at a distance from blade tip, and d > 0.5m.
By including n sensor panel in each blade, and all the sensors panel in same blade constitutes a sensing
Device group.
A kind of de-icing method of wind generator set blade icing of the present invention, is applied in horizontal axis wind-driven generator group,
Deicing operation suitable for blade under cryogenic conditions, comprising:
Step E1: taking n blade profile from blade root to blade tip on each blade, in blade profile main shaft and blade profile phase
Sensor panel is pasted in the position of friendship, and each blade profile is parallel with blade root flange face, and blade tip is not laid with sensor panel,
Blade arbitrary section i is taken, obtains to calculate after dependent variable by sensor panel and waves moment of flexure and shimmy curved on each section of blade；
Step E2: control system compares the outside air temperature t of wind speed wind direction sensor feeding1Whether preset temperature penalties is greater than
T0If t1≤T0And wind speed, blade pitch angle, blade azimuth angle and current actual measurement in wind power generating set history data
Error between each corresponding data is in allowable range of error, in the shimmy moment of flexure of the blade root currently surveyed and allowable range of error
Historical data in the shimmy moment of flexure of blade root compare, meanwhile, based on the shimmy moment of flexure in each section, first calculate blade be respectively segmented
Ice cover calculate the ice cover m of entire blade againiceIf t1> T0, then control system is failure to actuate；
Step E3: control system judges the ice cover m of entire bladeiceWhether it is greater than ice cover penalties m, such as larger than then controls
Blade heating system starting processed；
Step E4: control system is according to preset temperature penalties T1、T2, ice cover penalties m respectively with leaf temperature t2, blade
Ice cover miceBetween comparison result control blade heating system start and stop, specifically, if during blade heating system heats
Leaf temperature t2More than preset temperature penalties T1, stop heating immediately, if stopping blade heating system rear blade temperature t2Declined
Cheng Zhong, the ice cover m of entire bladeiceGreater than preset ice cover penalties m, to leaf temperature t2Drop to preset temperature penalties T2
Blade heating system is restarted afterwards, wherein leaf temperature t2It is the temperature value of the variation of an actual measurement, and t1> t2。
It calculates and waves moment M at blade arbitrary section iyiVariation delta Myi, pass through
It is calculated,
Wherein, Δ my_ice(k)For the kth section blade ice cover calculated according to formula (1), k=i ... n, 1≤i≤n, and i is
Natural number, n >=1, and n are natural number, and θ is blade pitch angle, RkFor the radius of section k, i.e. section k is at a distance from blade root, RiFor
The radius of section i, Rk+1For the radius of section k+1；
Under error enabled condition, the shimmy moment M at blade arbitrary section i is calculatedxiVariation delta Mxi, pass through
It is calculated,
Wherein, Δ mx_ice(k)For the kth section blade ice cover calculated according to formula (2).
The ice cover that blade is respectively segmented is calculated paragraph by paragraph from blade tip to blade root direction
Moment M is waved according to the last one sectionyiWith shimmy moment Mxi, i.e. moment M is waved in n-th sectionyiAnd pendulum
Vibration moment Mxi, n-th section of blade ice cover Δ m can be calculatedy_ice(n)With Δ mx_ice(n), then by Δ my_ice(n)And Δ
mx_ice(n)(n-1)th section of ice cover Δ m is acquired in substitution formula (1) and (2) respectivelyy_ice(n-1)With Δ mx_ice(n-1), and so on,
It can be in the hope of the ice cover of all blade sections.
Pass through
Ice cover of the calculating arbitrary section i to blade tip, wherein my_iceArbitrary section i covering to blade tip under direction is waved for blade
Ice amount, mx_iceFor the ice cover of arbitrary section i under blade edgewise direction to blade tip.
The blade ice cover m acquired using moment of flexure and shimmy moment of flexure is wavediceIt should approach and can be mutually authenticated, to the two
It averages as output valve mice, i.e.,
mice=(my_ice+mx_ice)/2 (5)
Seek the ice cover m of entire bladeice。
Preset temperature penalties T0Value range be 0≤T0≤1。
The error range enabled condition at least should be comprising wind power generating set in wind speed, blade pitch angle, blade side
Three data of parallactic angle, and require the mistake of wind speed, blade azimuth angle, blade pitch angle each history data and current measured data
Difference is less than 5%.
In conclusion the present invention a kind of de-icing method and its deicing system of wind generator set blade icing, Ke Yiyou
On the basis of the ice cover for imitating and accurately judging wind generator set blade, the deicing operation of blade is fast and effeciently carried out,
Meanwhile the temperature conditions that can be measured according to ice cover situation and currently opens blade heating system in real time and then reaches the mesh of ice-melt
While, avoid the excessively high damaged blade performance of temperature caused by due to heating time is too long.
The above-mentioned technical solution is only a kind of de-icing method of wind generator set blade icing of the present invention and its removes
The preferred embodiment of ice system, it is any in the present invention a kind of de-icing method and its deicing system of wind generator set blade icing
On the basis of made equivalent transformation or replacement be included in the scope of the claims of this patent.
Claims (10)
1. a kind of de-icing method of wind generator set blade icing, is applied in horizontal axis wind-driven generator group, it is suitable for low
The deicing operation of blade under the conditions of temperature, comprising:
Step E1:
N blade profile is taken from blade root to blade tip on each blade, in the position that blade profile main shaft and blade profile intersect
Sensor panel is pasted, and each blade profile is parallel with blade root flange face, blade tip is not laid with sensor panel, and blade is taken to appoint
Anticipate section i, waves moment of flexure and shimmy moment of flexure on each section of blade by calculating after sensor panel acquisition dependent variable；
Step E2:
Control system judges the outside air temperature t that wind speed wind direction sensor is sent into1Whether preset temperature penalties T is greater than0If t1≤T0And
It wind speed, blade pitch angle, blade azimuth angle in wind-driven generator history data and currently surveys between each corresponding data
Error under error range enabled condition, to the history under the shimmy moment of flexure of the blade root currently surveyed and error range enabled condition
The shimmy moment of flexure of blade root in data compares, meanwhile, based on the shimmy moment of flexure in each section, what first calculating blade was respectively segmented covers
Ice amount calculates the ice cover m of entire blade againiceIf t1> T0, then control system is failure to actuate；
Step E3:
Control system judges the ice cover m of entire bladeiceWhether it is greater than ice cover penalties m, such as larger than then controls blade heating system
System starting；
Step E4:
Control system is according to preset temperature penalties T1、T2, ice cover penalties m respectively with leaf temperature t2, entire blade ice cover
miceBetween comparison result control blade heating system start and stop, if leaf temperature t during blade heating system heats2It is super
Cross preset temperature penalties T1, stop heating immediately；If stopping blade heating system rear blade temperature t2During decline, entire leaf
The ice cover m of pieceiceGreater than preset ice cover penalties m, to leaf temperature t2Drop to preset temperature penalties T2After restart
Blade heating system, wherein leaf temperature t2It is the temperature value of the variation of an actual measurement, and t1> t2。
2. a kind of de-icing method of wind generator set blade icing according to claim 1, it is characterised in that: blade is cut
Face main shaft is constituted by waving direction main shaft and edgewise direction main shaft, waves the biography of direction main shaft and the stickup of blade profile intersection location
Sensor panel waves moment of flexure for measuring；The sensor panel that edgewise direction main shaft and blade profile intersection location are pasted is for surveying
Measure shimmy moment of flexure.
3. a kind of de-icing method of wind generator set blade icing according to claim 2, it is characterised in that: n-th
Section is d at a distance from blade tip, and d > 0.5m, i.e. the last one section are d at a distance from blade tip, and d > 0.5m.
4. a kind of de-icing method of wind generator set blade icing according to claim 1, it is characterised in that: calculate leaf
Moment M is waved at piece arbitrary section iyiVariation delta Myi, pass through
It is calculated,
Wherein, Δ my_ice(k)For the kth section blade ice cover calculated according to formula (1), k=i ... n, 1≤i≤n, and i are nature
Number, n >=1, and n are natural number, and θ is blade pitch angle, RkFor the radius of section k, i.e. section k is at a distance from blade root, RiFor section
The radius of i, Rk+1For the radius of section k+1；
Under error range enabled condition, the shimmy moment M at blade arbitrary section i is calculatedxiVariation delta Mxi, pass through
It is calculated,
Wherein, Δ mx_ice(k)For the kth section blade ice cover calculated according to formula (2).
5. a kind of de-icing method of wind generator set blade icing according to claim 4, it is characterised in that: wind speed,
The error at blade azimuth angle, each history data of blade pitch angle and current actual measurement corresponding data is less than 5%.
6. a kind of de-icing method of wind generator set blade icing according to claim 5, it is characterised in that: by blade tip
The ice cover that blade is respectively segmented is calculated paragraph by paragraph to blade root direction, and moment M is waved according to the last one sectionyiWith shimmy moment of flexure
Mxi, i.e. moment M is waved in n-th sectionyiWith shimmy moment Mxi, n-th section of blade ice cover Δ m can be calculatedy_ice(n)And Δ
mx_ice(n), then by Δ my_ice(n)With Δ mx_ice(n)(n-1)th section of blade ice cover Δ is acquired in substitution formula (1) and (2) respectively
my_ice(n-1)With Δ mx_ice(n-1), and so on, the ice cover of all blade sections of same blade can be acquired.
7. a kind of de-icing method of wind generator set blade icing according to claim 6, it is characterised in that: pass through
And
Ice cover of the calculating arbitrary section i to blade tip, wherein my_iceArbitrary section i covering to blade tip under direction is waved for blade
Ice amount, mx_iceFor the ice cover of arbitrary section i under blade edgewise direction to blade tip.
8. a kind of de-icing method of wind generator set blade icing according to claim 7, it is characterised in that: using waving
The blade ice cover that dance moment of flexure and shimmy moment of flexure acquire is answered equal and can be mutually authenticated, to my_iceAnd mx_iceThe sum of be averaging obtain
It is rounded the ice cover m of a bladeice, that is, pass through
mice=(my_ice+mx_ice)/2 (5)
Seek the ice cover m of entire bladeice。
9. according to claim 1 to a kind of de-icing method of wind generator set blade icing described in 8 any one, feature
It is: preset temperature penalties T0Value range be 0≤T0≤1。
10. a kind of deicing system of wind generator set blade icing, is applied in horizontal axis wind-driven generator group, it is suitable for low
The deicing operation of wind generator set blade under the conditions of temperature comprising:
One control system；
One blade heating system, the blade heating system cover in front of the blade including at least the thawing that is used for that edge in front of the blade is arranged
The heating film of the ice of edge, and heating film is fixed carbon resister material；
One wind speed wind direction sensor, for acquiring wind speed, wind direction, outside air temperature data and feeding back to control system；
One encoder, for acquiring blade azimuth angle and blade pitch angle signal and feeding back to control system；
One power supply system, at least supplying electric energy to control system, blade heating system, wind speed wind direction sensor, encoder；
Several sensor panels being fixed on wind generator set blade, for acquiring and feeding back answering for blade to control system
Variable change situation；
Control system is used to receive wind speed, wind direction, outside air temperature, the strain measurement result of sensor panel feedback, encoder and adopts
The blade azimuth angle of collection and blade pitch angle signal, control blade heating system carry out controllable heating movement；
Each fiber Bragg grating strain sensor and a temperature sensor constitute a sensor panel, fiber Bragg grating strain sensor and
Temperature sensor forms sensor panel in such a way that glass encapsulates after being connected by several optical fiber, and temperature sensor is for adopting
Collect leaf temperature and for eliminating fiber Bragg grating strain sensor dependent variable error as caused by temperature influence.
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| CN107035627A (en) * | 2017-06-16 | 2017-08-11 | 叶井龙 | A kind of multi-functional fan blade |
| 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 |
| CN113623149B (en) * | 2021-07-26 | 2022-08-05 | 西安交通大学 | Wind power blade efficient ice melting system utilizing water latent heat |
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| US7086834B2 (en) * | 2004-06-10 | 2006-08-08 | General Electric Company | Methods and apparatus for rotor blade ice detection |
| EP2198156B1 (en) * | 2007-10-05 | 2011-08-24 | Vestas Wind Systems A/S | A method for de-icing a blade of a wind turbine, a wind turbine and use thereof |
| DE102010030472A1 (en) * | 2010-06-24 | 2011-12-29 | Repower Systems Ag | Rotorblattenteisung |
| US20120055247A1 (en) * | 2011-08-17 | 2012-03-08 | Gonzalez Castro Jorge | Method and system for detecting an unusual operational condition of a wind turbine |
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| CN106351807A (en) | 2017-01-25 |
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