CN104454386A - Icing control method and device for wind generating set - Google Patents
Icing control method and device for wind generating set Download PDFInfo
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- CN104454386A CN104454386A CN201410683352.1A CN201410683352A CN104454386A CN 104454386 A CN104454386 A CN 104454386A CN 201410683352 A CN201410683352 A CN 201410683352A CN 104454386 A CN104454386 A CN 104454386A
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- 238000000034 method Methods 0.000 title claims abstract description 36
- 230000007613 environmental effect Effects 0.000 claims abstract description 37
- 230000008014 freezing Effects 0.000 claims abstract description 22
- 238000007710 freezing Methods 0.000 claims abstract description 22
- 238000001514 detection method Methods 0.000 claims abstract description 19
- 238000012545 processing Methods 0.000 claims description 17
- 238000012544 monitoring process Methods 0.000 claims description 14
- 238000012986 modification Methods 0.000 claims description 6
- 230000004048 modification Effects 0.000 claims description 6
- 230000002159 abnormal effect Effects 0.000 description 11
- 238000010248 power generation Methods 0.000 description 11
- 230000001960 triggered effect Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000006467 substitution reaction Methods 0.000 description 3
- 238000010977 unit operation Methods 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000011895 specific detection Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- 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
- F03D7/0268—Parking or storm protection
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
Abstract
The embodiment of the invention provides a wind generating set icing control method and device, wherein the method comprises the following steps: the icing condition of each blade of the wind generating set is detected in real time through an icing sensor, and the environmental parameters of the environment where the wind generating set is located and the operating parameters during the operation are monitored in real time; and when the detection result shows that each blade of the wind generating set is frozen and the monitored environmental parameters corresponding to the wind generating set meet the freezing condition, triggering freezing control operation according to the operating parameters corresponding to the wind generating set. The technical scheme of the invention realizes the control operation of the blade of the wind generating set in operation when the blade is frozen, and effectively improves the safety and reliability of the set when the blade is frozen.
Description
Technical Field
The invention relates to the technical field of wind power, in particular to a method and a device for controlling icing of a wind generating set.
Background
With the rapid development of wind power generation technology, wind energy markets in various environments are developed, for example, in some areas, the temperature is low in winter, the humidity in the air is high, and a wind generating set (referred to as a "set") is easy to freeze in the environment. After the blades of the unit are frozen, the load of the blades is increased, the aerodynamic performance of the blades is poor, the safety and the power of the unit are greatly affected, and the fan can be stopped for a long time or the blades are damaged to reduce the service life in severe cases.
Strictly speaking, a unit installed in a freezing area needs to be attached with a blade deicing function, but at present, no mature deicing unit is installed in batches at home and abroad. Therefore, how to reduce the safety and performance influence caused by blade icing for the currently installed or to be installed unit without blade deicing function becomes an important problem to be solved urgently in the wind power industry.
Disclosure of Invention
The embodiment of the invention provides a wind generating set icing control method and device, which are used for controlling an operating fan after judging that blades are iced and improving the safety and reliability of the wind generating set.
In order to achieve the above object, an embodiment of the present invention provides an icing control method for a wind turbine generator system, including:
the method comprises the steps that the icing condition of each blade of the wind generating set is detected in real time through an icing sensor, and the environmental parameters of the environment where the wind generating set is located and the operating parameters during the operation are monitored in real time;
and when the detection result shows that each blade of the wind generating set is frozen and the monitored environmental parameters corresponding to the wind generating set meet the freezing condition, triggering freezing control operation according to the operating parameters corresponding to the wind generating set.
The embodiment of the invention also provides a wind generating set icing control device, which comprises:
the detection module is used for detecting the icing condition of each blade of the wind generating set in real time through the icing sensor;
the monitoring module is used for monitoring the environmental parameters of the environment where the wind generating set is located and the operation parameters during the operation period in real time;
and the processing module is used for triggering and executing icing control operation according to the operating parameters corresponding to the wind generating set when the detection result shows that each blade of the wind generating set is iced and the monitored environmental parameters corresponding to the wind generating set meet icing conditions.
According to the icing control method and device for the wind generating set, provided by the embodiment of the invention, the icing condition of each blade of the wind generating set is detected in real time through the icing sensor, the obtained environmental parameters of the environment where the wind generating set is located and the operation parameters during operation are monitored to comprehensively judge the icing condition of the set, and when the detection result shows that each blade of the wind generating set is iced and the monitored environmental parameters corresponding to the wind generating set meet the icing condition, the icing control operation is triggered according to the operation parameters corresponding to the wind generating set, so that the safety and the reliability of the set are effectively improved.
Drawings
FIG. 1 is a flowchart of a method of an embodiment of a wind turbine generator system icing control method provided by the present invention;
FIG. 2 is a flow chart of a method of another embodiment of a wind turbine generator system icing control method provided by the present invention;
FIG. 3 is a schematic structural diagram of an embodiment of an icing control device of a wind turbine generator system provided by the invention;
fig. 4 is a schematic structural diagram of another embodiment of the icing control device of the wind generating set provided by the invention.
Description of the reference numerals
31-a detection module, 32-a monitoring module and 33-a processing module; 331-first processing unit, 332-second processing unit.
Detailed Description
The embodiment of the invention comprehensively judges the icing condition of the unit by combining the detected icing condition of each blade of the wind generating set, the environmental parameter of the environment where the blade is located and the operating parameter of the unit, and triggers the icing control operation according to the operating parameter corresponding to the unit when the detection result shows that each blade of the unit is iced and the monitored environmental parameter corresponding to the unit meets the icing condition. The technical scheme of the embodiment of the invention can be suitable for various wind generating sets.
Example one
Fig. 1 is a flowchart of a method of an embodiment of an icing control method for a wind turbine generator system according to the present invention, where an execution subject of the method may be a main control system of the wind turbine generator system, or a control device or module integrated in the main control system. As shown in fig. 1, the wind turbine generator system icing control method specifically includes:
s101, detecting the icing condition of each blade of the wind generating set in real time through an icing sensor, and monitoring the environmental parameters of the environment where the wind generating set is located and the operating parameters during the operation in real time;
in this embodiment, three factors are referred to when determining whether a unit blade is frozen, which are respectively: the blade icing condition actually detected by the icing sensor, the environmental parameters of the environment where the fan is located and the operating parameters of the fan in the operating process. Because the installation of monitoring equipment such as a sensor on the surface of the blade is inconvenient, in actual operation, the icing sensor can be arranged on the upper part of the engine unit cabin cover in advance to approximately detect the icing condition of the blade. The temperature sensor, the humidity sensor and other sensors are arranged on the unit, so that the temperature, the humidity and other environmental parameters of the environment where the unit is located can be measured. The running parameters of the unit, such as wind speed-generated power, wind speed-rotating speed relation curves and the like, can be obtained by monitoring the running state of the unit in real time in the running process of the unit.
S102, when the detection result shows that each blade of the wind generating set is frozen and the monitored environmental parameters corresponding to the wind generating set meet the freezing condition, triggering freezing control operation according to the operating parameters corresponding to the wind generating set;
in this embodiment, in order to determine whether the blades of the wind turbine are frozen and the degree of freezing more accurately, when the icing condition of the blades actually detected by the icing sensor indicates that each blade of the unit is frozen, and the monitored environmental parameters corresponding to the unit meet the icing condition, the icing condition of the blades is finally determined by referring to whether the operating parameters corresponding to the unit are normal, and the icing control operation for the icing period is executed. When the blades are usually frozen, the unit can cause abnormal operation parameters and other conditions of the unit due to the change of the aerodynamic appearance of the blades and the increase of ice load of the blades, and whether the blades are frozen or not can be effectively judged by comparing the operation parameters of the unit with the corresponding operation parameters when the blades are not frozen; meanwhile, the icing degree of the blades can be judged according to the abnormal degree reflected by comparison of the monitored operation parameters and the corresponding operation parameters in the non-icing state. Finally, the icing condition of the blades of the unit is finally judged by combining the comprehensive consideration of three aspects of the blade icing condition actually detected by an icing sensor, whether the environmental parameters of the environment where the unit is located meet the icing condition and whether the unit operation parameters meet the abnormal condition under icing, and the icing control operation is triggered according to the abnormal condition and the corresponding degree reflected by the operation parameters corresponding to the unit on the premise that the first two conditions meet the icing condition, for example, when the unit is judged to be slightly iced, the operation mode and part of the operation parameters of the unit can be properly adjusted, so that the fan can work in a high-power-generation working mode as much as possible to meet the power generation requirement; when the unit is judged to be severely frozen, the unit can be shut down to avoid the damage of the fan and ensure the safety of the unit.
According to the icing control method for the wind generating set, provided by the embodiment of the invention, the icing condition of each blade of the wind generating set is detected in real time through the icing sensor, and the environmental parameters of the environment where the wind generating set is located and the operation parameters during the operation are monitored in real time; and when the detection result shows that each blade of the wind generating set is frozen and the monitored environmental parameters corresponding to the wind generating set meet the freezing condition, triggering freezing control operation according to the operating parameters corresponding to the wind generating set. The method realizes the control operation of the blade of the running wind generating set when being frozen, and effectively improves the safety and reliability of the set when the blade is frozen; meanwhile, when the blade is judged to be frozen and the freezing control operation is triggered, a judgment scheme combining the monitoring environment condition and the unit operation parameter is adopted, so that the judgment accuracy is improved, and the probability of false alarm of blade freezing is reduced.
Example two
Fig. 2 is a method flowchart of another embodiment of the wind turbine generator system icing control method provided by the present invention, which is a specific implementation manner of the embodiment shown in fig. 1. As shown in fig. 2, the wind turbine generator system icing control method specifically includes:
s201, detecting the icing condition of each blade of the wind generating set in real time through an icing sensor, and monitoring the environmental parameters of the environment where the wind generating set is located and the operating parameters during the operation in real time; the specific implementation of this step can be seen in the corresponding content of step 101.
In this embodiment, the environmental parameters mainly include a temperature parameter and a humidity parameter; the condition that the environmental parameters corresponding to the wind generating set meet the icing condition specifically comprises the following steps: the temperature parameter is lower than a temperature threshold value, and the humidity parameter is greater than a humidity threshold value. Generally, when both the temperature and humidity in the air satisfy a certain threshold range, it may be determined that the environment has reached an icing condition. For example, for most areas in northern China, the temperature threshold is about-10 ℃ and the humidity threshold is about 60%; for most areas in south China, the temperature threshold is about 2 ℃ and the humidity threshold is about 80%.
In the specific detection and measurement, the detection result fed back by the icing sensor can be represented by a parameter B, wherein B is 1 to represent icing, and B is 0 to represent non-icing; the monitored condition that the environmental parameter corresponding to the unit meets the icing condition can be represented by a parameter H, wherein H is 1 to represent that the icing condition is met, and H is 0 to represent that the icing condition is not met; in the above monitored operation parameters corresponding to the unit, the time that the unit operates at the minimum rotation speed in the specific wind speed segment corresponding to the unit operating period is selected but not limited in this embodiment as a parameter for measuring whether the unit is in abnormal operation, the parameter is represented by G, where G ═ 0 represents normal operation, G ═ 1 represents mild abnormality, G ═ 2 represents severe abnormality, and the corresponding definition is: when the time of the unit running at the minimum rotating speed in the specific wind speed period is lower than a first time threshold value in a continuous specific time period, the corresponding definition is normal running, when the time of the unit running at the minimum rotating speed in the specific wind speed period exceeds a first time threshold value in a continuous specific time period and does not exceed a second time threshold value in a continuous specific time period, the corresponding definition is light abnormity, when the time of the unit running at the minimum rotating speed in the specific wind speed period exceeds a second time threshold value in a continuous specific time period, the corresponding definition is heavy abnormity, and the first time threshold value is smaller than the second time threshold value. Specifically, the specific wind speed section may vary in specific value according to the unit difference and the environment, and the setting value is usually high, for example, the wind speed is greater than 8 m/s. The reason for setting the higher specific wind speed section is that the rotating speed of the unit running at the lower wind speed section is lower (not necessarily related to whether the blades are frozen) and is basically maintained at the lowest rotating speed; and when the wind speed is low, even the blade icing has little influence on the safety and the reliability of the unit. The above specific time period may be 10 min. The first time threshold may be 1min, and the second time threshold may be 8 min. In a specific application scenario, by referring to specific values of B, H, G three parameters, a corresponding icing control operation scheme can be set in a targeted manner.
S202, when the detection result shows that each blade of the wind generating set is frozen and the monitored environmental parameters corresponding to the wind generating set meet the freezing condition, if the running time of the wind generating set at the minimum rotating speed in a specific wind speed section is accumulated to exceed a first time threshold value and not exceed a second time threshold value in a continuous specific time period, triggering the wind generating set to execute freezing operation;
specifically, when the parameters B, H, and G are 1, the current unit blade is likely to be in a light icing state by comprehensive determination. Generally, the blade can continue to operate in a slightly frozen state, but the generated power is reduced, and the influence on other aspects is small. At this time, the unit can be triggered to execute the operation aiming at the icing in the mild icing state; such as but not limited to: and triggering the wind generating set to increase the minimum pitch angle and the minimum rotating speed of the current wind generating set, and reducing the rotating speed and torque coefficient to respectively reach the corresponding modification amplitude threshold values. The modification amplitude threshold value of each parameter can be preset or temporarily set and modified, so that the unit can still keep or increase the power generation amount under the condition that the blades are slightly iced, and the index requirement of the unit on the power generation amount is met.
S203, when the detection result shows that each blade of the wind generating set is frozen and the monitored environmental parameters corresponding to the wind generating set meet the freezing condition, if the time of the wind generating set running at the minimum rotating speed in a specific wind speed section is accumulated to exceed a second time threshold value in a specific time period, triggering the wind generating set to execute freezing shutdown operation;
specifically, when the parameters B, H, and G are 1, and 2, the current unit blade is likely to be in a severe icing state by comprehensive determination. Generally, when the blades are in a severe icing state, the unit cannot work normally, and forced operation can bring great negative effects on the safety and reliability of the unit. At this time, the unit needs to be shut down. In this embodiment, the adopted shutdown operation is specifically to trigger the unit to complete the wind shutdown at 180 degrees.
The 180-degree air-break is as follows: the impeller of the fan is shut down in 180 degrees back to the windward direction, and the shut-down mode can ensure that the tail edge of the blade faces the wind under the condition of severe icing of the blade, so that the icing part of the blade is changed, namely the icing part is mainly arranged at the tail edge of the airfoil shape of the blade, and the icing of the front edge is relieved. Because the influence of the icing of the front edge on the aerodynamic performance of the wing profile is more serious, the shutdown method can reduce the time for restarting the unit after the icing of the blades of the unit is finished, improve the power generation time of the unit and further improve the power generation capacity of the unit.
Of course, if the specific value of the parameter B, H, G is beyond the above two combinations, it indicates that the blade of the current unit is not frozen, and it can be determined that the blade is not frozen.
The above steps 202 and 203 may be considered as a refinement of step 102.
The icing control method for the wind generating set adopted by the embodiment is based on the embodiment shown in fig. 1, and provides a specific implementation mode for icing control according to the abnormal level reflected by the operation parameters of the set when the external environment meets the icing condition, for example, when the set is slightly abnormal, the icing operation capable of improving the power generation amount is adopted; when the unit is severely abnormal, the icing shutdown operation capable of reducing the starting time when the unit is restarted after icing is adopted, so that the safety and reliability of the unit are ensured, the generated energy of the unit is ensured as much as possible, and the power generation efficiency is stabilized.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
EXAMPLE III
Fig. 3 is a schematic structural diagram of an embodiment of an icing control device for a wind turbine generator system, which is provided by the present invention and can be used for executing the method steps of the embodiment shown in fig. 1, as shown in fig. 3, the icing control device for a wind turbine generator system specifically includes: a detection module 31, a monitoring module 32 and a processing module 33; wherein:
the detection module 31 is used for detecting the icing condition of each blade of the wind generating set in real time through an icing sensor;
the monitoring module 32 is used for monitoring the environmental parameters of the environment where the wind generating set is located and the operation parameters during the operation period in real time;
and the processing module 33 is configured to trigger an icing control operation according to the operating parameters corresponding to the wind generating set when the detection result shows that each blade of the wind generating set is frozen and the monitored environmental parameters corresponding to the wind generating set meet the icing condition.
Further, as shown in fig. 4, on the basis of fig. 3, the above operation parameters include the time that the wind turbine generator set operates at the minimum rotation speed in a specific wind speed segment;
the processing module 33 specifically includes:
the first processing unit 331 is configured to trigger the wind generating set to perform an icing operation if the accumulated running time of the wind generating set at the minimum rotating speed in a specific wind speed period exceeds a first time threshold and does not exceed a second time threshold within a continuous specific time period;
the second processing unit 332 is configured to trigger the wind generating set to perform an icing shutdown operation if the accumulated time of the wind generating set operating at the minimum rotation speed in the specific wind speed period exceeds a second time threshold in the specific time period;
wherein the first time threshold is less than the second time threshold.
Further, in the embodiment shown in fig. 4, the first processing unit 331 is specifically configured to:
and triggering the wind generating set to increase the minimum pitch angle and the minimum rotating speed of the current wind generating set, and reducing the rotating speed and torque coefficient to respectively reach the corresponding modification amplitude threshold values.
Further, in the embodiment shown in fig. 4, the second processing unit 332 is specifically configured to:
and triggering the wind generating set to complete wind stopping at 180 degrees.
Further, in the embodiment shown in fig. 4, the environmental parameters corresponding to the wind turbine generator set include a temperature parameter and a humidity parameter;
the environment parameters corresponding to the wind generating set meet icing conditions and comprise: the temperature parameter is lower than a temperature threshold and the humidity parameter is greater than a humidity threshold.
The steps of the method of the embodiment shown in fig. 2 may be performed by the icing control device of the wind turbine generator system shown in the embodiment of fig. 4, and the method principle is not described herein again.
The icing control device of the wind generating set provided by the embodiment of the invention detects the icing condition of each blade of the wind generating set in real time through the icing sensor, and monitors the environmental parameters of the environment where the wind generating set is located and the operation parameters during the operation in real time; and when the detection result shows that each blade of the wind generating set is frozen and the monitored environmental parameters corresponding to the wind generating set meet the freezing condition, triggering freezing control operation according to the operating parameters corresponding to the wind generating set. The method realizes the control operation of the blade of the running wind generating set when being frozen, and effectively improves the safety and reliability of the set when the blade is frozen; meanwhile, when the blade is judged to be frozen and the freezing control operation is triggered, a judgment scheme combining the monitoring environment condition and the unit operation parameter is adopted, so that the judgment accuracy is improved, and the probability of false alarm of blade freezing is reduced.
Furthermore, when the external environment meets the icing condition, a specific implementation mode of icing control according to the abnormal level reflected by the operation parameters of the unit is provided, for example, when the unit is slightly abnormal, the icing operation capable of improving the power generation amount is adopted; when the unit is severely abnormal, the icing shutdown operation capable of reducing the starting time when the unit is restarted after icing is adopted, so that the safety and reliability of the unit are ensured, the generated energy of the unit is ensured as much as possible, and the power generation efficiency is stabilized.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A wind generating set icing control method is characterized by comprising the following steps:
the method comprises the steps that the icing condition of each blade of the wind generating set is detected in real time through an icing sensor, and the environmental parameters of the environment where the wind generating set is located and the operating parameters during the operation are monitored in real time;
and when the detection result shows that each blade of the wind generating set is frozen and the monitored environmental parameters corresponding to the wind generating set meet the freezing condition, triggering freezing control operation according to the operating parameters corresponding to the wind generating set.
2. The method of claim 1, wherein the operating parameters include a time for which the wind turbine generator set is operating at a minimum rotational speed for a particular segment of wind speed;
the triggering of the icing control operation according to the operating parameters corresponding to the wind generating set comprises:
if the accumulated running time of the wind generating set at the minimum rotating speed in the specific wind speed period exceeds a first time threshold value and does not exceed a second time threshold value in a continuous specific time period, triggering the wind generating set to execute icing running operation;
or,
if the time of the wind generating set running at the minimum rotating speed in the specific wind speed section is accumulated to exceed the second time threshold value in the specific time section, triggering the wind generating set to execute icing shutdown operation;
wherein the first time threshold is less than the second time threshold.
3. The method of claim 2, wherein the triggering the wind turbine generator set to perform an icing operation comprises:
and triggering the wind generating set to increase the minimum pitch angle and the minimum rotating speed of the current wind generating set, and reducing the rotating speed and torque coefficient to respectively reach the corresponding modification amplitude threshold values.
4. The method of claim 2, wherein the triggering the wind turbine generator set to perform an icing shutdown operation comprises:
and triggering the wind generating set to complete wind stopping at 180 degrees.
5. The method according to any one of claims 1 to 4, wherein the environmental parameters corresponding to the wind turbine generator system comprise a temperature parameter and a humidity parameter;
the environmental parameter that wind generating set corresponds satisfies icing condition includes: the temperature parameter is lower than a temperature threshold, and the humidity parameter is greater than a humidity threshold.
6. A wind generating set freezes controlling means characterized in that includes:
the detection module is used for detecting the icing condition of each blade of the wind generating set in real time through the icing sensor;
the monitoring module is used for monitoring the environmental parameters of the environment where the wind generating set is located and the operation parameters during the operation period in real time;
and the processing module is used for triggering an icing control operation according to the operating parameters corresponding to the wind generating set when the detection result shows that each blade of the wind generating set is iced and the monitored environmental parameters corresponding to the wind generating set meet icing conditions.
7. The apparatus of claim 6, wherein the operating parameters include a time for the wind turbine to operate at a minimum rotational speed for a particular segment of wind speed;
the processing module specifically comprises:
the first processing unit is used for triggering the wind generating set to execute an icing operation if the accumulated running time of the wind generating set at the minimum rotating speed in the specific wind speed period exceeds a first time threshold value and does not exceed a second time threshold value in a continuous specific time period;
the second processing unit is used for triggering the wind generating set to execute icing shutdown operation if the accumulated time of the wind generating set running at the minimum rotating speed in the specific wind speed section exceeds the second time threshold value in the specific time section;
wherein the first time threshold is less than the second time threshold.
8. The apparatus according to claim 7, wherein the first processing unit is specifically configured to:
and triggering the wind generating set to increase the minimum pitch angle and the minimum rotating speed of the current wind generating set, and reducing the rotating speed and torque coefficient to respectively reach the corresponding modification amplitude threshold values.
9. The apparatus according to claim 7, wherein the second processing unit is specifically configured to:
and triggering the wind generating set to complete wind stopping at 180 degrees.
10. The device according to any one of claims 6 to 9, wherein the environmental parameters corresponding to the wind turbine generator system comprise a temperature parameter and a humidity parameter;
the environmental parameter that wind generating set corresponds satisfies icing condition includes: the temperature parameter is lower than a temperature threshold, and the humidity parameter is greater than a humidity threshold.
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| CN108019323A (en) * | 2017-12-04 | 2018-05-11 | 三重能有限公司 | Freeze detection blade system, wind power generating set and method of controlling vanes |
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| CN108343566A (en) * | 2018-03-28 | 2018-07-31 | 长沙理工大学 | Blade icing fault online monitoring method and system based on running state of wind turbine generator |
| CN108999758A (en) * | 2017-06-07 | 2018-12-14 | 北京金风科创风电设备有限公司 | Blade icing monitoring method and device for wind driven generator |
| CN113719433A (en) * | 2021-06-15 | 2021-11-30 | 国家电投集团宁夏能源铝业中卫新能源有限公司 | Wind turbine generator blade icing detection method, device and system and storage medium |
| 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 |
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| CN116950857A (en) * | 2023-06-28 | 2023-10-27 | 湖南工程学院 | System and method for preventing blade of wind generating set from icing |
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