CN107061160A - It is a kind of that operation safety control method and system are carried based on the wind generator set blade ice that blade loading is detected - Google Patents
It is a kind of that operation safety control method and system are carried based on the wind generator set blade ice that blade loading is detected Download PDFInfo
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- CN107061160A CN107061160A CN201710280417.1A CN201710280417A CN107061160A CN 107061160 A CN107061160 A CN 107061160A CN 201710280417 A CN201710280417 A CN 201710280417A CN 107061160 A CN107061160 A CN 107061160A
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- operation risk
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- 238000011068 loading method Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000010276 construction Methods 0.000 claims abstract description 24
- 238000010977 unit operation Methods 0.000 claims abstract description 10
- 238000001514 detection method Methods 0.000 claims description 22
- 230000008014 freezing Effects 0.000 claims description 14
- 238000007710 freezing Methods 0.000 claims description 14
- 239000000835 fiber Substances 0.000 claims description 12
- 238000011217 control strategy Methods 0.000 claims description 9
- 238000005336 cracking Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000006467 substitution reaction Methods 0.000 description 2
- 230000001154 acute effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004083 survival effect Effects 0.000 description 1
Classifications
-
- 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
- F03D7/0264—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor for stopping; controlling in emergency situations
-
- 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
It is a kind of that operation safety control method is carried based on the wind generator set blade ice that blade loading is detected, it the described method comprises the following steps：A) signal is judged according to weather environment, triggering blade frost runs the startup of safety control system and exited；B) judge that blade ice carries operation risk grade according to blade construction strength assurance coefficient；C) operation risk grade is carried according to blade ice and exports power of the assembling unit control signal, choose predetermined power limit value corresponding with blade ice load operation risk grade, blade ice carries operation risk grade and is judged to stopping unit operation during danger.And a kind of wind generator set blade ice carrying row safety control system detected based on blade loading 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
The present invention relates to a kind of wind generator set blade ice load operation safety control method detected based on blade loading
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 blade ice carrying row often occurs in the process of running for wind power generating set
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, and 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 complete machine intrinsic frequency, collapse,
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 requires the progress 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
In order to overcome stoppage protection can only be taken in the case of existing wind generator set blade icing, reduce generated energy
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 generator set blade ice carrying row peace for lifting generated energy
Full control method and system.
The technical solution adopted for the present invention to solve the technical problems is：
It is a kind of that operation safety control method, methods described bag are carried based on the wind generator set blade ice that blade loading is detected
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 blade construction strength assurance coefficient；
C) operation risk grade is carried according to blade ice and exports power of the assembling unit control signal, chosen 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 stopping unit operation during danger.
Further, in the step b), provide blade ice and carry operation risk grade and power control strategy, according to blade knot
Structure strength assurance coefficient, determines that different blade ice carry operation risk grade, and set power limit according to different brackets.
A kind of wind generator set blade ice carrying row safety control system detected based on blade loading, 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 loading detection module, for detecting every blade loading data, and calculates blade construction Strength Safety system
Number；
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；Power of the assembling unit control is obtained according to blade construction strength assurance coefficient
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 blade construction strength assurance coefficients, determines that different blade ice carry operation risk grades, and according to
Different brackets sets power limit.
Further, the weather environment detection module includes atmosphere temperature transducer, atmospheric humidity sensor and meteorology
Freezing environment determination module, calculates meteorological freezing environment according to atmospheric temperature data and atmospheric humidity data and judges signal.
The weather environment detection module is arranged on engine room cover of wind turbine lateral tail.
The blade loading detection module is included at fiber Bragg grating strain sensor, fiber Bragg grating (FBG) demodulator and load signal
Device is managed, fiber grating strain signal is converted into strain electrical signal data, leaf is calculated according to the important section strain data of blade
Chip architecture strength assurance coefficient.
Fiber Bragg grating strain sensor is arranged on blade interior cavity, fiber Bragg grating (FBG) demodulator and load signal processor peace
On wheel hub.
Beneficial effects of the present invention are mainly manifested in：Wind turbines automatic detection judgement weather environment whether is frozen,
Different operation security control schemes are formulated according to blade construction strength assurance coefficient simultaneously, can avoid what blade ice carrying row was brought
Blade cracking, fracture, unit collapses wait major accident, improve unit operation safety, raising unit operation reliability.
Brief description of the drawings
Fig. 1 is a kind of wind generator set blade ice carrying row safety control system detected based on blade loading of the present invention
Schematic diagram；
Fig. 2 is blade loading detection module schematic diagram of the present invention；
Fig. 3 is a kind of wind generator set blade ice carrying row safety control system detected based on blade loading of the present invention
Structured flowchart.
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 detected based on blade loading
Method, 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 blade construction strength assurance coefficient；
C) operation risk grade is carried according to blade ice and exports power of the assembling unit control signal, chosen 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 stopping unit operation during danger.
Further, in the step b), provide blade ice and carry operation risk grade and power control strategy, according to different
Blade construction strength assurance coefficient, determines that different blade ice carry operation risk grade, and according to different brackets setting power limit
Value.
A kind of wind generator set blade ice carrying row safety control system detected based on blade loading, 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 loading detection module, for detecting every blade loading data, and calculates blade construction Strength Safety system
Number；
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；Power of the assembling unit control is obtained according to blade construction strength assurance coefficient
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 blade construction strength assurance coefficients, determines that different blade ice carry operation risk grades, and according to
Different brackets sets power limit.
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
Include weather environment detection module for 3, blade loading detection module 2 and blade ice carrying row safety control module 4,1 is light in figure
Fiber grating strain transducer.The meteorological freezing environment of the weather environment detection module detection judges signal input blade ice carrying
Row safety control module, the every blade loading data that blade loading detection module is detected calculate blade strength safe clearance
Blade ice carrying row safety control module is inputted, ice carrying row safety control module is exported according to blade construction strength assurance coefficient
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, judge that environment, as icing, starts wind generator set blade ice carrying row safety control system.According to atmospheric moisture
Spend (RH)<85% or atmospheric temperature (DEG C)>2 DEG C, judge that environment does not freeze, then exit the control safely of wind power generating set ice carrying row
System processed.
The blade loading detection module schematic diagram is as shown in Fig. 2 including fiber Bragg grating strain sensor 21, fiber grating
(FBG) demodulator and load signal processor are 22.Fiber Bragg grating strain sensor is arranged on blade interior cavity, fiber grating demodulation
Instrument and load signal processor are arranged on wheel hub.The blade loading detection module includes：Fiber grating strain signal is turned
Strain electrical signal data is changed to, blade construction strength assurance coefficient is calculated according to the important section strain data of blade.
Further, the Leaf structural strength safety coefficient can be calculated according to equation (1.1), if i-th of blade is important
Section strain limit design load is εi0, actual strain measured value is εi1, blade construction strength assurance coefficientFor：
In control strategy, blade construction strength assurance coefficient takes the minimum value in i important sections.
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 exited；According to blade knot
Structure strength assurance coefficient judges that blade ice carries operation risk grade；The output power of the assembling unit control of operation risk grade is carried according to blade ice
Signal processed.Table 1 lists certain 2MW wind generator set blades ice and carries operation risk grade and power control strategy
Table 1
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, when blade construction strength assurance coefficient is larger, the power of the assembling unit be limited in 0.7 times it is specified
In power bracket.In the case of blade moderate icing, when blade construction strength assurance coefficient is fine, the power of the assembling unit is limited in 0.5
In times rated operating range.In the case of blade severe icing, when blade construction strength assurance coefficient is smaller, power of the assembling unit limitation
In 0.3 times of rated operating range.It is in blade icing under dangerous situation, unit answers stoppage protection, improves unit severe
Survival ability under environment, it is ensured that the projected life of unit.
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 the present invention is described in detail with reference to the foregoing embodiments, for those skilled in the art, it still may be used
To be revised to the technical scheme described in previous embodiment, or equivalent substitution is carried out to which part technical characteristic.It is all
Within the spirit and principles in the present invention, any revision, equivalent substitution, improvement for being made etc., should be included in the guarantor of the present invention
In the range of shield.
Claims (8)
1. a kind of carry operation safety control method based on the wind generator set blade ice that blade loading is detected, 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 blade construction strength assurance coefficient；
C) operation risk grade is carried according to blade ice and exports power of the assembling unit control signal, chosen and carry operation risk grade with blade ice
Corresponding predetermined power limit value, blade ice carries operation risk grade and is judged to stopping unit operation during danger.
2. a kind of wind generator set blade ice carrying row security control detected based on blade loading 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
Blade construction strength assurance coefficient, determine that different blade ice carry operation risk grades, and power is set according to different brackets
Limit value.
3. wind generator set blade ice as claimed in claim 1 carries the system that operation safety control method is realized, its feature
It is：The system includes：
Weather environment detection module, judges for calculating meteorological freezing environment according to atmospheric temperature data and atmospheric humidity data
Signal；
Blade loading detection module, for detecting every blade loading data, and calculates blade construction strength assurance coefficient；
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；Power of the assembling unit control letter is obtained according to blade construction strength assurance coefficient
Number.
4. system as claimed in claim 3, it is characterised in that：In the blade ice carrying row safety control module, leaf is provided
Flake ice carries operation risk grade and power control strategy, according to different blade construction strength assurance coefficients, determines different leaves
Flake ice carries operation risk grade, and sets power limit according to different brackets.
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, are calculated 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 loading detection module should including fiber grating
Become sensor, fiber Bragg grating (FBG) demodulator and load signal processor, fiber grating strain signal is converted into strain electric signal number
According to calculating blade construction strength assurance coefficient according to the important section strain data of blade.
8. system as claimed in claim 7, it is characterised in that：Fiber Bragg grating strain sensor is arranged on blade interior cavity,
Fiber Bragg grating (FBG) demodulator and load signal processor are arranged on wheel hub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710280417.1A CN107061160A (en) | 2017-04-26 | 2017-04-26 | It is a kind of that operation safety control method and system are carried based on the wind generator set blade ice that blade loading is detected |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710280417.1A CN107061160A (en) | 2017-04-26 | 2017-04-26 | It is a kind of that operation safety control method and system are carried based on the wind generator set blade ice that blade loading is detected |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107061160A true CN107061160A (en) | 2017-08-18 |
Family
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|---|---|---|---|
| CN201710280417.1A Pending CN107061160A (en) | 2017-04-26 | 2017-04-26 | It is a kind of that operation safety control method and system are carried based on the wind generator set blade ice that blade loading is detected |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410140A (en) * | 2011-10-13 | 2012-04-11 | 国电联合动力技术有限公司 | Ice load operation optimization control system and method used in wind turbine generator system (WTGS) |
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| US20120292905A1 (en) * | 2010-02-01 | 2012-11-22 | Lm Glasfiber A/S | Method of in situ calibrating load sensors of a wind turbine blade |
| US20130174664A1 (en) * | 2010-07-14 | 2013-07-11 | Ib Svend Olesen | Ice detection method and system for wind turbine blades |
| CN103472741A (en) * | 2013-08-29 | 2013-12-25 | 东方电气集团东方汽轮机有限公司 | Control system for fatigue certification experimental test on blades of wind turbine |
| CN104314756A (en) * | 2014-10-15 | 2015-01-28 | 四川东方电气自动控制工程有限公司 | Safe shut-down method during ice loaded operation of blade of wind power generating unit |
| EP3009673A1 (en) * | 2014-10-15 | 2016-04-20 | Siemens Aktiengesellschaft | Operating a wind turbine during standstill, involving particularly the detection of rotor blades icing |
| CN106368913A (en) * | 2015-07-15 | 2017-02-01 | 成都阜特科技股份有限公司 | Method for measuring ice cover mass of blades of wind generating set |
| US20170058871A1 (en) * | 2015-08-27 | 2017-03-02 | General Electric Company | System and method for mitigating ice throw from a wind turbine rotor blade |
-
2017
- 2017-04-26 CN CN201710280417.1A patent/CN107061160A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102648345A (en) * | 2009-10-08 | 2012-08-22 | 维斯塔斯风力系统有限公司 | Control method for a wind turbine |
| US20120292905A1 (en) * | 2010-02-01 | 2012-11-22 | Lm Glasfiber A/S | Method of in situ calibrating load sensors of a wind turbine blade |
| US20130174664A1 (en) * | 2010-07-14 | 2013-07-11 | Ib Svend Olesen | Ice detection method and system for wind turbine blades |
| CN102410140A (en) * | 2011-10-13 | 2012-04-11 | 国电联合动力技术有限公司 | Ice load operation optimization control system and method used in wind turbine generator system (WTGS) |
| CN103472741A (en) * | 2013-08-29 | 2013-12-25 | 东方电气集团东方汽轮机有限公司 | Control system for fatigue certification experimental test on blades of wind turbine |
| CN104314756A (en) * | 2014-10-15 | 2015-01-28 | 四川东方电气自动控制工程有限公司 | Safe shut-down method during ice loaded operation of blade of wind power generating unit |
| EP3009673A1 (en) * | 2014-10-15 | 2016-04-20 | Siemens Aktiengesellschaft | Operating a wind turbine during standstill, involving particularly the detection of rotor blades icing |
| CN106368913A (en) * | 2015-07-15 | 2017-02-01 | 成都阜特科技股份有限公司 | Method for measuring ice cover mass of blades of wind generating set |
| US20170058871A1 (en) * | 2015-08-27 | 2017-03-02 | General Electric Company | System and method for mitigating ice throw from a wind turbine rotor blade |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20170818 |
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