CN105089929B - Wind generator set blade icing detecting system and its method - Google Patents
Wind generator set blade icing detecting system and its method Download PDFInfo
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Abstract
The invention discloses a kind of wind generator set blade icing detecting systems and its method, system to include：Data monitoring unit, control unit, temperature sensor, velocity sensor and anemoclinograph.Environment temperature of the data monitoring unit by temperature sensor detection machine out of my cabin, data monitoring unit detects real-time wind speed by anemoclinograph, data monitoring unit detects real-time wind speed round by velocity sensor, realtime power curve point is formed by real-time wind speed and real-time wind speed round input control unit, and by the real-time output power of wind turbine that control unit provides.Operation power curve when control unit does not freeze by comparing realtime power curve point and wind turbine judges whether fan blade freezes.The present invention is directed to the defects of current icing detection technique stability and not high reliability, can be directed to wind turbine and be under shutdown and operating status, different methods is respectively adopted and is detected, detection is accurate, reliability is high, cost is relatively low.
Description
Technical field
The present invention relates to wind power generation fields, freeze and detect more particularly, to a kind of blade applied to wind power generating set
System and method.
Background technology
Wind energy increasingly attracts attention, wind-force is sent out as green regenerative energy sources in today of traditional energy increasingly reduction
The single-machine capacity of motor group (hereinafter referred to as wind turbine) also develops towards enlargement direction, to improve wind energy utilization.Wind turbine exists
Wind wheel, generator and tower three parts are generally comprised in structure composition.Blower fan work in wind energy resources than more rich area,
It is relatively low or in the case that humidity is larger in air themperature, icing phenomenon may occur on fan blade.Fan blade freezes will
The aerodynamic characteristic of blade is caused to change, reduces the working efficiency of wind turbine, reduces the output of power, wind may be caused when serious
Machine is shut down, and influences the safe and stable operation of power grid.Simultaneously as blade icing increases the load of wind turbine and influences wind turbine
One of principal element of safe and reliable operation.Therefore, it is possible to the icing conditions of effectively and accurately detection blower fan blade, for wind turbine
Electricity generation system is significant.
However, current icing detection technique is to calculate the deviation of signal using different types of wind speed to judge wind turbine
Icing conditions.The method of these detection wind power generation unit blade icing conditions, in fact it could happen that blade does not freeze and is mistaken for blade knot
The situation of ice occurs, it is also possible to will appear blade frozen but not up to severity and be mistaken for the feelings that blade does not freeze
Condition, therefore the reliability of result is poor, easily judges by accident.If there is erroneous judgement situation, the power generation for seriously affecting wind turbine is imitated
Rate and service life.Therefore, how blade icing conditions are accurately effectively detected, is current urgent problem to be solved, has
Great engineering application value.
Applied in the prior art by Nanjing Wind Power Technology Co., Ltd. on 03 15th, 2012 immediate, and in
On 07 18th, 2012 open, the Chinese invention patent application of publication number CN102588223A《It is a kind of to carry out icing detection
Wind-driven generator and its freezing detection method》, disclose a kind of warm out of my cabin by temperature sensor and humidity sensor detection machine
Degree and humidity carry out the method whether detection blower fan blade freezes.This method is although simple and practicable, and cost is not also high, but only leads to
Excess temperature sensor and humidity sensor detect to carry out fan blade icing, and accuracy and reliability is not high, easily makes
Into erroneous judgement.
It is, therefore, desirable to provide a kind of more accurate and reliable icing detection technique method is to solve above-mentioned technical problem.
Invention content
In view of this, the purpose of the present invention is to provide a kind of wind generator set blade icing detecting system and its sides
Method, can accurate detection blower fan blade ice condition, detection is accurate, reliability is high, at low cost.
In order to achieve the above-mentioned object of the invention, the present invention specifically provides a kind of wind generator set blade icing detecting system
Technic relization scheme, a kind of wind generator set blade icing detecting system, including：Data monitoring unit, control unit, temperature
Spend sensor, velocity sensor and anemoclinograph.The data monitoring unit by the temperature sensor detection machine out of my cabin
Environment temperature, the data monitoring unit detects real-time wind speed by the anemoclinograph, and the data monitoring unit leads to
It crosses the velocity sensor and detects real-time wind speed round, real-time wind speed and real-time wind speed round are inputted into described control unit, and
The real-time output power of wind turbine provided by described control unit forms realtime power curve point.Described control unit is by comparing
Operation power curve when the realtime power curve point and wind turbine do not freeze judges whether fan blade freezes.
Preferably, under the wind turbine is in operating status, first by cabin outside temperature sensor detection environment temperature
Degree if environment temperature is more than zero degrees celsius, judges that the fan blade does not freeze；If environment temperature is less than zero degrees celsius, institute
Control unit is stated to be detected realtime power curve point, when not frozen by calculating realtime power curve point and fan blade
The deviation of power curve is run to judge whether fan blade freezes；When if realtime power curve point does not freeze with fan blade
The deviation for running power curve is more than presetting range, then judges that the fan blade freezes, if realtime power curve point with
The deviation of operation power curve when fan blade does not freeze is less than presetting range, then judges that the fan blade is not tied
Ice.
Preferably, the detecting system further includes leaf quality detection unit, and the data monitoring unit passes through blade matter
The real-time quality of amount detection unit detection blower fan blade, described control unit by comparing the real-time leaf quality and wind turbine at
Under shutdown status, and the leaf quality that when blade does not freeze is detected by the leaf quality detection unit judges wind
Whether machine blade freezes.
Preferably, when the wind turbine is under shutdown status, first by cabin outside temperature sensor detection environment temperature
Degree if environment temperature is more than zero degrees celsius, judges that fan blade does not freeze；If environment temperature is less than zero degrees celsius, the control
Unit processed calculates leaf when the real-time leaf quality that the leaf quality detection unit detects does not freeze with the fan blade
Deviation between tablet quality judges whether the fan blade freezes；If the leaf quality detection unit detects real-time
The difference between leaf quality when leaf quality and the fan blade do not freeze is more than presetting range, the then control
Unit judges that the fan blade freezes；If the real-time leaf quality that the leaf quality detection unit detects and the wind turbine
The difference of leaf quality when blade does not freeze is less than presetting range, then described control unit judges the fan blade
It does not freeze.
In addition the present invention also specifically provides a kind of technic relization scheme of wind generator set blade freezing detection method,
A kind of wind generator set blade freezing detection method, includes the following steps：
S100：The environment temperature of detection machine out of my cabin, and judge whether the environment temperature outside cabin is less than zero degrees celsius, if
It is no, it is lasting to detect, if it is, into next step；
S101：Real-time wind speed round is detected, and judges whether wind speed round is more than zero, if it is, S102 is entered step,
If it is not, then enter step S103；
S102：Real-time wind speed is detected, is formed according to real-time wind speed and real-time wind speed round and the real-time output power of wind turbine
Realtime power curve point, and operation power curve when not freezing with wind turbine is compared, if its difference exceeds predetermined deviation
Value then judges that the fan blade freezes, if it is not, then judging that the fan blade does not freeze, and continues to execute step S102；
S103：The real-time leaf quality of detection blower fan, and leaf quality when not freezing with the wind turbine is compared, such as
Its difference of fruit then judges that the fan blade freezes, if it is not, then continuing to execute step S103 beyond predetermined deviation value.
The wind generator set blade icing detecting system and its method provided by implementing the invention described above, has as follows
Technique effect：The present invention is directed to the defects of current icing detection technique stability and not high reliability, can be in for wind turbine
It shuts down under operating status, different methods is respectively adopted and is detected, detection is accurate, reliability is high, cost is relatively low.
Description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described.It should be evident that the accompanying drawings in the following description is only this
Some embodiments of invention, for those of ordinary skill in the art, without creative efforts, can be with
Other specific embodiments are obtained according to these attached drawings.
Fig. 1 is a kind of system structure frame of specific embodiment of wind generator set blade icing detection device of the present invention
Figure；
Fig. 2 is a kind of program flow diagram of specific embodiment of wind generator set blade freezing detection method of the present invention；
Fig. 3 is that power curve is illustrated with the comparison that wind speed changes when 1.5MW wind generator set blades freeze and do not freeze
Figure；
Fig. 4 is the comparison that power curve changes with wind speed round when 1.5MW wind generator set blades freeze and do not freeze
Schematic diagram；
In figure：1- data monitoring units, 2- control units, 3- temperature sensors, 4- velocity sensors, 5- wind speed and directions
Instrument, 6- leaf quality detection units.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present invention are clearer, below in conjunction with the embodiment of the present invention
In attached drawing, the technical solution in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
Only it is the part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, the common skill in this field
Art personnel all other embodiments obtained without creative efforts belong to the model that the present invention protects
It encloses.
As shown in attached drawing 1 to attached drawing 4, wind generator set blade icing detecting system and its method of the present invention are given
Specific embodiment, the invention will be further described in the following with reference to the drawings and specific embodiments.
In order to overcome accuracy and reliability existing for current fan blade icing detecting system and method not high, easily
The technological deficiency of erroneous judgement is caused, more accurately and reliably carries out fan blade icing detection, as shown in Figure 1, a kind of wind-force hair
The specific embodiment of electric turbines vane icing detecting system, including：Data monitoring unit 1, control unit 2, temperature sensor 3,
Velocity sensor 4 and anemoclinograph 5.Environment temperature of the data monitoring unit 1 by 3 detection machine of temperature sensor out of my cabin, number
Real-time wind speed is detected by anemoclinograph 5 according to monitoring unit 1, data monitoring unit 1 detects real-time wind by velocity sensor 4
Wheel speed, by real-time wind speed and real-time wind speed round input control unit 2, and it is defeated in real time to pass through the wind turbine that control unit 2 provides
Go out power and form realtime power curve point.When fan blade does not freeze, by the operation power curve input control unit of wind turbine
2, as standard of comparison.When fan operation, fortune when control unit 2 does not freeze by comparing realtime power curve point and wind turbine
Row power curve judges whether fan blade freezes.
Fan blade freezes under running conditions, the rotary inertia J of wind wheel and load torque TLIt will all change, root
According to formula：The realtime power curve point of wind turbine will deviate from operation power curve when fan blade does not freeze
Certain range.Wherein, TeFor wind turbine electromagnetic torque, TLFor load torque, J is the rotary inertia of wind wheel, and ω is wind speed round,
As can be seen that the rotary inertia J of wind wheel and load torque T from formulaLIt will result directly in wind turbine electromagnetic torque TeIt changes,
So as to cause the change of wind turbine output power, in the specific embodiment of the invention, the change of the wind turbine output power is single by control
Member 2 obtains.
Under wind turbine is in operating status, first by cabin outside temperature sensor 3 detect environment temperature, if environment temperature
Degree is more than zero degrees celsius, then judges that fan blade does not freeze；If environment temperature is less than zero degrees celsius, control unit 2 is to real-time work(
Rate curve point is detected, by the deviation for the operation power curve for calculating realtime power curve point and when fan blade does not freeze
To judge whether fan blade freezes；The deviation of operation power curve when if realtime power curve point and fan blade do not freeze
More than presetting range, then judge that fan blade freezes, if operation when realtime power curve point does not freeze with fan blade
The deviation of power curve is less than presetting range, then judges that fan blade does not freeze.As shown in Figure 3, it is 1.5MW wind-force
The contrast schematic diagram that power curve changes with wind speed when generating set blade freezes and do not freeze.In attached drawing 3, curve A is shown
Power curve when wind generator set blade does not freeze, the power that curve B is shown when wind generator set blade freezes are bent
Line.As shown in Figure 4, freeze what is changed with power curve when not freezing with wind speed round for 1.5MW wind generator set blades
Contrast schematic diagram.In attached drawing 4, curve C show power curve when wind generator set blade does not freeze, and curve D is shown
Power curve when wind generator set blade freezes.
As a kind of preferable specific embodiment of the present invention, detecting system still further comprises leaf quality detection unit 6,
Data monitoring unit 1 is by the real-time quality of 6 detection blower fan blade of leaf quality detection unit, and control unit 2 is by comparing real
When leaf quality and wind turbine be under shutdown status, and the leaf that when blade does not freeze is detected by leaf quality detection unit 6
Tablet quality judges whether fan blade freezes.
When wind turbine is under shutdown status, first by cabin outside temperature sensor 3 detect environment temperature, if environment temperature
Degree is more than zero degrees celsius, then judges that fan blade does not freeze；If environment temperature is less than zero degrees celsius, control unit 2 calculates blade
The deviation between leaf quality when the real-time leaf quality and fan blade that quality testing unit 6 detects do not freeze judges
Whether fan blade freezes；When if the real-time leaf quality that leaf quality detection unit 6 detects does not freeze with fan blade
Difference between leaf quality is more than presetting range, then control unit 2 judges that fan blade freezes；If leaf quality detects
The difference of leaf quality when the real-time leaf quality that unit 6 detects does not freeze with fan blade is less than presetting model
It encloses, then control unit 2 judges that fan blade does not freeze.
As shown in Figure 2, a kind of specific embodiment of wind generator set blade freezing detection method, including following step
Suddenly：
S100：Environment temperature of the data monitoring unit 1 by 3 detection machine of temperature sensor out of my cabin, and judge outside cabin
Whether environment temperature is less than zero degrees celsius, if not, lasting detection, if it is, into next step；
S101：Data monitoring unit 1 detects real-time wind speed round by velocity sensor 4, and whether judges wind speed round
More than zero, if it is, S102 is entered step, if it is not, then entering step S103；
S102：Data monitoring unit 1 detects real-time wind speed by anemoclinograph 5, according to real-time wind speed and real-time wind wheel
The real-time output power of wind turbine that rotating speed and control unit 2 provide forms realtime power curve point, and when not freezing with wind turbine
Operation power curve is compared, if its difference exceeds predetermined deviation value, judges that fan blade freezes, if it is not, then sentencing
Disconnected fan blade does not freeze, and continues to execute step S102；
S103：Data monitoring unit 1 is by the real-time leaf quality of 6 detection blower fan of leaf quality detection unit, and and wind
Leaf quality when machine does not freeze is compared, if its difference exceeds predetermined deviation value, judges that fan blade freezes, if
It is no, then continue to execute step S103.
The wind generator set blade icing detecting system and its method of specific embodiment of the invention description are for knot at present
The defects of ice detection technique stability and not high reliability, can be directed to wind turbine and be under shutdown and operating status, be respectively adopted
Different methods are detected, and detection is accurate, reliability is high, cost is relatively low.
Each embodiment is described by the way of progressive in this specification, the highlights of each of the examples are with other
The difference of embodiment, just to refer each other for identical similar portion between each embodiment.
The above described is only a preferred embodiment of the present invention, not make limitation in any form to the present invention.Though
So the present invention is disclosed above with preferred embodiment, however is not limited to the present invention.It is any to be familiar with those skilled in the art
Member, in the case where not departing from the Spirit Essence of the present invention and technical solution, all using in the methods and techniques of the disclosure above
Appearance makes technical solution of the present invention many possible changes and modifications or is revised as the equivalent embodiment of equivalent variations.Therefore,
Every content without departing from technical solution of the present invention, technical spirit according to the present invention are made to the above embodiment any simple
Modification, equivalent replacement, equivalence changes and modification, still fall within technical solution of the present invention protection in the range of.
Claims (2)
1. a kind of wind generator set blade icing detecting system, which is characterized in that including：Data monitoring unit (1), control are single
First (2), temperature sensor (3), velocity sensor (4) and anemoclinograph (5)；The data monitoring unit (1) is by described
The environment temperature of temperature sensor (3) detection machine out of my cabin, the data monitoring unit (1) are examined by the anemoclinograph (5)
Real-time wind speed is surveyed, the data monitoring unit (1) detects real-time wind speed round by the velocity sensor (4), by real-time wind
Fast and real-time wind speed round input described control unit (2), and the real-time output work of wind turbine of described control unit (2) offer is provided
Rate forms realtime power curve point；When described control unit (2) does not freeze by comparing the realtime power curve point and wind turbine
Operation power curve judge whether fan blade freezes；Under the wind turbine is in operating status, first by cabin outside
Temperature sensor (3) detects environment temperature, if environment temperature is more than zero degrees celsius, judges that the fan blade does not freeze；If
Environment temperature is less than zero degrees celsius, and described control unit (2) is detected realtime power curve point, by calculating realtime power
The deviation of operation power curve when curve point and fan blade do not freeze judges whether fan blade freezes；If realtime power
The deviation of operation power curve when curve point and fan blade do not freeze is more than presetting range, then judges the wind turbine leaf
Piece freezes, if the deviation of operation power curve when realtime power curve point and fan blade do not freeze is less than presetting model
It encloses, then judges that the fan blade does not freeze；The detecting system further includes leaf quality detection unit (6), the data prison
Real-time quality of the unit (1) by leaf quality detection unit (6) detection blower fan blade is surveyed, described control unit (2) passes through ratio
The real-time quality and wind turbine of the blade are under shutdown status, and when blade does not freeze is examined by the leaf quality
It surveys the leaf quality that unit (6) detects and judges whether fan blade freezes；It is logical first when the wind turbine is under shutdown status
Temperature sensor (3) the detection environment temperature outside cabin is crossed, if environment temperature is more than zero degrees celsius, judges that fan blade is not tied
Ice；If environment temperature is less than zero degrees celsius, described control unit (2) calculates what the leaf quality detection unit (6) detected
The deviation between leaf quality when the real-time quality of blade and the fan blade do not freeze is to judge the fan blade
No icing；If the real-time quality for the blade that the leaf quality detection unit (6) detects does not freeze with the fan blade
Leaf quality between difference be more than presetting range, then described control unit (2) judges that the fan blade freezes；If
The leaf quality when real-time quality for the blade that the leaf quality detection unit (6) detects does not freeze with the fan blade
Difference be less than presetting range, then described control unit (2) judges that the fan blade does not freeze.
2. a kind of wind generator set blade freezing detection method based on system described in claim 1, which is characterized in that including
Following steps：
S100：The environment temperature of detection machine out of my cabin, and judge whether the environment temperature outside cabin is less than zero degrees celsius, if not,
Lasting detection, if it is, into next step；
S101：Real-time wind speed round is detected, and judges whether wind speed round is more than zero, if it is, S102 is entered step, if
It is no, then enter step S103；
S102：Real-time wind speed is detected, is formed in real time according to real-time wind speed and real-time wind speed round and the real-time output power of wind turbine
Power curve point, and operation power curve when not freezing with wind turbine is compared, if its difference exceeds predetermined deviation value,
Judge that the fan blade freezes, if it is not, then judging that the fan blade does not freeze, and continue to execute step S102；
S103：The real-time quality of the blade of detection blower fan, and leaf quality when not freezing with the wind turbine is compared, if
Its difference exceeds predetermined deviation value, then judges that the fan blade freezes, if it is not, then continuing to execute step S103.
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| CN201410214763.6A CN105089929B (en) | 2014-05-21 | 2014-05-21 | Wind generator set blade icing detecting system and its method |
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| CN109322802A (en) * | 2018-09-05 | 2019-02-12 | 许继集团有限公司 | A kind of blade of wind-driven generator icing prediction technique and system |
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| CN105464912B (en) * | 2016-01-27 | 2019-02-19 | 国电联合动力技术有限公司 | A kind of method and apparatus of wind generator set blade icing detection |
| CN107795440B (en) * | 2016-08-31 | 2019-04-23 | 北京金风科创风电设备有限公司 | Blade icing alarm method and device |
| CN108119319B (en) * | 2016-11-29 | 2020-02-11 | 北京金风科创风电设备有限公司 | Method and device for identifying icing state of blade of wind generating set |
| CN106679719A (en) * | 2016-12-13 | 2017-05-17 | 云南能投海装新能源设备有限公司 | Fan icing detection device |
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| CN108267613B (en) * | 2017-12-28 | 2021-01-29 | 华润电力技术研究院有限公司 | Wind measurement data processing method and related equipment |
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| CN109026563B (en) * | 2018-07-24 | 2019-12-27 | 上海电力学院 | Fan blade icing prediction method based on feature selection and XGboost |
| EP3870852B1 (en) | 2018-10-26 | 2022-09-21 | Vestas Wind Systems A/S | Controller for a wind farm |
| CN113007041A (en) * | 2021-03-02 | 2021-06-22 | 山东中车风电有限公司 | Wind turbine generator blade icing detection system and detection method |
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| CN113847216B (en) * | 2021-10-14 | 2023-09-26 | 远景智能国际私人投资有限公司 | Fan blade state prediction method, device, equipment and storage medium |
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