CN114396364A - Large-scale safety monitoring system and method for wind power blade - Google Patents
Large-scale safety monitoring system and method for wind power blade Download PDFInfo
- Publication number
- CN114396364A CN114396364A CN202210104460.3A CN202210104460A CN114396364A CN 114396364 A CN114396364 A CN 114396364A CN 202210104460 A CN202210104460 A CN 202210104460A CN 114396364 A CN114396364 A CN 114396364A
- Authority
- CN
- China
- Prior art keywords
- blade
- cabin
- cabinet
- deflection
- hub
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000012544 monitoring process Methods 0.000 title claims abstract description 51
- 238000000034 method Methods 0.000 title claims description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 17
- 230000008859 change Effects 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 10
- 230000008054 signal transmission Effects 0.000 claims description 10
- 230000007547 defect Effects 0.000 abstract description 7
- 230000009467 reduction Effects 0.000 abstract description 3
- 238000010408 sweeping Methods 0.000 abstract description 2
- 238000005259 measurement Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000007689 inspection Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000013480 data collection Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Images
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
- F03D17/00—Monitoring or testing of wind motors, e.g. diagnostics
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/30—Control parameters, e.g. input parameters
- F05B2270/33—Proximity of blade to tower
-
- 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
Abstract
The invention discloses a large-scale safety monitoring system for a wind power blade, which comprises an impeller, wherein the impeller is connected with one end of a cabin, the bottom of the cabin is connected with the top of a tower, the bottom of the tower is fixedly connected with a base, the impeller is provided with a blade safety monitoring system, the cabin is provided with a cabin acquisition system, the cabin acquisition system comprises a cabin acquisition cabinet, a cabin data transmission system and a cabin cabinet, and the bottom of the tower is provided with a tower base cabinet. According to the invention, by additionally arranging the blade safety monitoring system on the wind turbine, the running state of the blade can be found in time, and the wind turbine can be stopped and checked in time when the problems of blade defect rigidity reduction, blade clearance abnormity and the like occur, so that the safety risk of the blade sweeping tower caused by blade defects or complex wind conditions is effectively avoided, and the working efficiency of the wind turbine is greatly improved.
Description
Technical Field
The invention relates to the technical field of wind power equipment, in particular to a large-scale safety monitoring system and method for a wind power blade.
Background
With the rapid development of society, people's consciousness on energy conservation is gradually strengthened. Wind power is increasingly noticed by people as one of new energy.
As is well known, the blade is the main energy capturing device of the wind turbine, and the safety of the blade is crucial in the operation process of the wind turbine. However, with the development of wind power technology, the size of the blades is larger and larger, the cost is higher and higher, the geographical position of the wind turbine generator is harsh, especially the wind turbine generator located in a mountain wind field has complicated annual wind conditions, changeable wind directions and large turbulence, accidents such as blade tower sweeping and blade fracture are likely to occur in a limit state, and the working efficiency of the wind turbine generator is greatly reduced.
Therefore, how to improve the safety and reliability of the blade becomes a technical problem which people need to solve urgently.
Disclosure of Invention
Aiming at the technical problems in the related art, the invention provides a large-scale safety monitoring system and method for a wind power blade, which can overcome the defects in the prior art.
In order to achieve the technical purpose, the technical scheme of the invention is realized as follows:
a large-scale safety monitoring system for a wind power blade comprises an impeller, wherein the impeller is connected with one end of a cabin, the bottom of the cabin is connected with the top of a tower, the bottom of the tower is fixedly connected with a foundation, the impeller is provided with a blade safety monitoring system, the cabin is provided with a cabin acquisition system, the cabin acquisition system comprises a cabin acquisition cabinet, a cabin data transmission system and a cabin cabinet, and the bottom of the tower is provided with a tower foundation cabinet;
the impeller comprises a hub, a variable pitch cabinet and a plurality of blades, the blade safety monitoring system comprises a measuring signal transmitting device, a measuring signal receiving device, a hub data acquisition system and a hub signal transmission system, the hub is provided with the hub acquisition cabinet, the hub data acquisition system and the hub signal transmission system are respectively positioned in the hub acquisition cabinet and at the top of the hub acquisition cabinet, and the measuring signal transmitting device and the measuring signal receiving device are respectively positioned at the root and the middle of the blades;
the pitch control cabinet is respectively electrically connected with the measuring signal transmitting device, the measuring signal receiving device and the hub collecting cabinet, the measuring signal receiving device is in communication connection with the engine room data transmission system through the hub data collecting system and the hub signal transmission system, and the engine room data transmission system is in communication connection with the central monitoring system through the tower footing cabinet.
Further, the cabin collection cabinet is powered by the cabin cabinet or the tower footing cabinet.
Furthermore, the measuring signal transmitting device is a laser radar transmitting device, and the measuring signal receiving device is a laser radar receiving plate.
Furthermore, the central monitoring system comprises a central control switch and a wind farm server, the cabin data transmission system is in communication connection with the central control switch through the tower footing cabinet, and the central control switch is in communication connection with the wind farm server.
A large-scale safety monitoring method for a wind power blade comprises the following steps:
s1 when the wind turbine blade is under the wind load, the measuring signal transmitting device in one blade monitoring system isL 0Emits a straight ultrasonic radar light wave,L 0to measure the distance of the signal emitting device from the blade root,L 1measuring the distance from the signal receiving device to the signal transmitting device;
s2 is located atL’=L 0+L 1The measuring signal receiving device is used for receiving the data change of the linear ultrasonic radar light wave and determining the actual deflection valueδ；
S3 passing through deflection curve function
Calculates at that momentAt the tip of the leafLMaximum deflection of the position ofΔ’Wherein a, b, c and d are coefficients to be determined, and z is the distance from the middle position of the blade to the blade root;
s4 judging the maximum deflectionΔ’Maximum deflection allowed by the bladeΔThe influence of the safety and the operating environment of the blade on the blade is further judged.
Further, when reverse thinking is adopted, the blade tip is determined according to the leaving time of the bladeLMaximum deflection allowedΔCalculating the inherent maximum deflection curve of the blade
And calculating the maximum/minimum deflection value allowed at the positionΔ’Wherein a, b, c and d are coefficients to be determined, and z is the distance from the middle position of the blade to the blade root; comparing the actual measured deflection values of the blades thereatδWhere the maximum/minimum deflection values allowed for the bladeΔ’Further judging the influence of the safety or the operating environment of the blade on the blade.
Further, a blade limit deflection warning value and an alarm value are set, and when the deflection exceeds the set warning value, the unit runs in a limited power mode; and when the deflection exceeds the alarm value, stopping the machine set.
The invention has the beneficial effects that: according to the invention, the blade safety monitoring system is additionally arranged on the wind turbine generator, the running state of the blade can be found in time, if the problems of blade defect rigidity reduction, blade clearance abnormity and the like occur, the wind turbine generator can be stopped and checked in time, and the safety risk of the blade tower cleaning caused by blade defects or complex wind conditions is effectively avoided, so that a large amount of manpower, material resources and financial resources are saved, and the working efficiency of the wind turbine generator is greatly improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a large-scale safety monitoring system for a wind turbine blade according to an embodiment of the invention;
FIG. 2 is a schematic diagram of a deflection delta change curve of a certain position of a blade of a large-scale safety monitoring system of a wind turbine blade according to an embodiment of the invention;
FIG. 3 is a deflection curve of a certain type of blade of a large-scale safety monitoring system for a wind turbine blade according to an embodiment of the invention;
FIG. 4 is a deflection change danger curve of a certain position of a blade of the large-scale safety monitoring system of a wind turbine blade according to the embodiment of the invention;
FIG. 5 is a schematic diagram of blade deflection change of a large-scale safety monitoring system of a wind turbine blade according to an embodiment of the invention;
in the figure: 1. the system comprises an impeller, 2, a cabin, 3, a tower, 4, a foundation, 5, a blade safety monitoring system, 6, a central monitoring system, 11, a hub, 12, a variable pitch cabinet, 13, a blade, 21, a cabin acquisition cabinet, 221, a cabin data transmission system, 22, a cabin cabinet, 51, a measurement signal transmitting device, 52, a measurement signal receiving device, 53, a hub acquisition cabinet, 531, a hub signal transmission system, 61, a central control switch, 62 and a wind farm server.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments that can be derived by one of ordinary skill in the art from the embodiments given herein are intended to be within the scope of the present invention.
As shown in fig. 1, the large-scale safety monitoring system for the wind turbine blade according to the embodiment of the invention includes an impeller 1, the impeller 1 is connected with one end of a nacelle 2, the bottom of the nacelle 2 is connected with the top of a tower 3, the bottom of the tower 3 is fixedly connected with a base 4, the impeller 1 is provided with a blade safety monitoring system 5, the nacelle 2 is provided with a nacelle acquisition system, the nacelle acquisition system includes a nacelle acquisition cabinet 21, a nacelle data transmission system 221 and a nacelle cabinet 22, and the bottom of the tower 3 is provided with a base cabinet 31;
the impeller 1 comprises a hub 11, a variable pitch cabinet 12 and a plurality of blades 13, the blade safety monitoring system 5 comprises a measuring signal transmitting device 51, a measuring signal receiving device 52, a hub data acquisition system and a hub signal transmission system 531, the hub 11 is provided with the hub acquisition cabinet 53, the hub data acquisition system and the hub signal transmission system 531 are respectively positioned in the hub acquisition cabinet 53 and at the top of the hub acquisition cabinet, and the measuring signal transmitting device 51 and the measuring signal receiving device 52 are respectively positioned at the root and the middle of the blades 13;
the pitch control cabinet 12 is electrically connected to the measurement signal transmitting device 51, the measurement signal receiving device 52, and the hub collecting cabinet 53, respectively, the measurement signal receiving device 52 is in communication connection with the nacelle data transmission system 221 through the hub data collection system and the hub signal transmission system 531, and the nacelle data transmission system 221 is in communication connection with the central monitoring system 6 through the tower base cabinet 31.
In an embodiment, the nacelle collecting cabinet 21 is powered by the nacelle cabinet 22 or the tower base cabinet 31.
In an embodiment, the measurement signal transmitter 51 is a lidar transmitter, and the measurement signal receiver 52 is a lidar receiver.
In an embodiment, the central monitoring system 6 includes a central control switch 61 and a wind farm server 62, the nacelle data transmission system 221 is communicatively connected to the central control switch 61 through the tower base cabinet 31, and the central control switch 61 is communicatively connected to the wind farm server 62.
The method mainly monitors the deformation of the blades by a large-scale deflection measurement scheme, and judges the safety of the blades of the wind turbine generator and the safety of the wind turbine generator by comparing and analyzing the difference of the deformation of each blade.
As is known, the blade is mainly an energy capturing device of a wind turbine generator, and the safety of the blade is important in the operation process of the wind turbine generator. However, with the development of wind power technology, the size of the blade is larger and larger, and the cost is higher and higher, so that the safety of the blade is monitored, and safety protection devices for arranging the blade are more and more.
The blade is a flexible part, when the impeller rotates, the blade can generate a certain amount of deflection deformation when wind blows the blade, and the invention mainly adopts the laser radar ranging mode to deflect the fixed position of the blade
The measurement is performed. Because the wind speed from the ground to the highest blade tip is a nonlinear numerical value, the deflection of the blade at a certain fixed position when the impeller of the wind turbine generator rotates
The variation curve of (2) is a wave curve, as shown in figure 2, the deflection of a certain position of the blade
The change curve is shown schematically. When the corresponding deflection under a certain working condition exceeds a preset value, the abnormal performance of the blades of the wind turbine generator is judged, and the wind turbine generator needs to be stopped for inspection or operated with reduced power.
When the wind turbine generator blade is used for load and strength calculation, the maximum deflection deformation of the blade is calculated under the condition of the maximum limit working condition or the maximum deflection deformation of the blade, and in view of the fact that the wind turbine generator blade is a variable cross-section beam, the bending deformation of the blade can be represented by a deflection curve function combining an index and a polynomial by combining the stress analysis and the deformation mode of the blade:
wherein, a,b,c,dIn order to determine the coefficient to be determined,zthe distance from the middle position of the blade to the blade root.
According to the one-dimensional beam theory of structural mechanics, the blade root is fixedly supported, the derivative of the deflection line of the blade at the blade root is 0, and the maximum deflection of the blade tip under the action of composite force isΔIf, ifThe length of the blade isLThe blade deflection curve is shown in FIG. 3.
The safety monitoring system mainly monitors the deflection change value of the blade at a fixed position.
The method is a detection mode of the absolute value of the deflection of the blade, the data is accurate and does not need to be converted, and the data detected in a large scale is reliable. The method comprises the following steps of:
1. a laser radar transmitting device is arranged at the root of the blade, and the angle of the radar transmitting device can be adjusted to be suitable for installation;
2. a laser radar receiving plate is arranged at a certain position in the middle of the blade, has the functions of data reading and transmission, and transmits the read data to an acquisition cabinet of the hub;
3. the signal of the hub acquisition cabinet is subjected to data interaction with the cabin acquisition cabinet through wireless transmission equipment;
4. the laser radar transmitter and the data receiving plate collector of the hub are both powered by a power supply of the hub cabinet, and the line arrangement of the positions of the blades and the hub is laid according to the existing support;
5. the cabin collection cabinet is powered by the cabin cabinet and can also be powered by the tower footing cabinet;
6. and the data signal is transmitted to a switch of the tower footing system, the data is finally transmitted to a central control switch of the central monitoring system through the wind power plant ring network system, data operation is carried out through a wind farm server installed in the central monitoring system, and the deflection change value of each blade of each unit and the safety state of each unit are visually displayed.
In the running process of the unit, if the deflection value of a certain blade exceeds the set safety threshold, alarming and reminding are carried out, as shown in fig. 4, when the monitoring value of a certain blade exceeds the upper limit threshold delta max at the moment T, the alarm is the momentδ 1Andδ 2when the blade is considered to be at a higher risk, or the blade is already in a state of reduced rigidity, the inspection is needed.
Particularly, when the blades are designed, the deflection curve library of the blades is compiled according to design data corresponding to different limit deflection curves under different wind speed working conditions. When the blades have different deflection at corresponding wind speed, the data is timely interacted with the main control of the unit, and the safety of the blades is accurately judged.
Particularly, the technical scheme can be used as a wind turbine clearance safety monitoring means, the limit deflection value of the blade is set, and when the deflection exceeds a set warning value, the power of the wind turbine runs in a limited mode; and if the deflection exceeds the alarm value, stopping the machine set.
The blade safety monitoring system mainly detects the deflection value of the blade, a measuring signal transmitting device 51 is installed at a certain position of a cavity in the blade, a specific installation method can adopt the modes of resin bonding and the like, a measuring signal receiving device 52 is installed at a certain distance L from the measuring signal transmitting device 51, and the deflection value of the certain position of the blade is monitored in real time.
The measuring mode of the sensor of the detecting system is that the deflection change absolute value between the blade middle fields L is measured.
The receipt received by the cabin data transmission system 221 is transmitted to the central control switch 61 through the tower base cabinet 31, the wind farm server 62 analyzes and processes the data acquired by the central control switch 61, the monitoring result is visually displayed, and abnormal data is alarmed through a popup window or other reminding modes.
Regarding a method for monitoring safety of blades, taking one blade as an example, the method comprises the following steps:
1. when the blades of the generator set are subjected to wind load, the blades begin to bend and change under the original balance load, a measurement signal transmitting device 51 in the blade monitoring system transmits linear ultrasonic radar light waves, data received by a measurement signal receiving device 52 change, and an actual deflection value is determined, such as the deflection value generated at a measurement position at time T1 in fig. 4δ =δ 1-δ m；
2. In conjunction with the blade deflection curve of FIG. 3, over the length of the bladeL’=L 0+L 1A positional deflection value ofδ，Can be determined when the equipment is installedL 0AndL 1then can pass through
Calculating the position of the blade tip at the momentLMaximum deflection of positionΔ’。
3. Determining maximum deflectionΔ’Maximum allowable to the bladeΔFurther judging the influence of the safety or the operating environment of the blade on the blade.
Regarding the method for monitoring the safety of the blade, taking one blade as an example, the reverse thinking method comprises the following two steps:
1. determining maximum allowable deflection of blade tip when blade leaves factoryΔ；
2. Calculating the inherent maximum deflection curve of the blade
；
3、L’=L 0+L 1And calculating the maximum/minimum deflection value allowed at the positionΔ’；
4. When a wind turbine generator blade is subjected to wind load, the blade begins to bend under the original balance load, a measurement signal transmitting device 51 in a blade monitoring system transmits linear ultrasonic radar light waves, data received by a measurement signal receiving device 52 changes, and the actual deflection value is determinedδ；
5. Comparing the actual measured deflection value of the blade at the positionδMaximum/minimum deflection values allowed in relation to the bladeΔ’Further judging the influence of the safety or the operating environment of the blade on the blade.
In conclusion, by means of the technical scheme, the operation state of the blade can be found in time by additionally arranging the blade safety monitoring system on the wind turbine generator, if the problems of blade defect rigidity reduction, blade clearance abnormity and the like occur, the wind turbine generator can also be stopped and checked in time, and the safety risk of the blade tower cleaning caused by blade defects or complex wind conditions is effectively avoided, so that a large amount of manpower, material resources and financial resources are saved, and the working efficiency of the wind turbine generator is greatly improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. The wind power blade large-scale safety monitoring system is characterized by comprising an impeller (1), wherein the impeller (1) is connected with one end of a cabin (2), the bottom of the cabin (2) is connected with the top of a tower (3), the bottom of the tower (3) is fixedly connected with a foundation (4), a blade safety monitoring system (5) is arranged on the impeller (1), a cabin acquisition system is arranged on the cabin (2), the cabin acquisition system comprises a cabin acquisition cabinet (21), a cabin data transmission system (221) and a cabin cabinet (22), and a tower base cabinet (31) is arranged at the bottom of the tower (3);
the impeller (1) comprises a hub (11), a variable pitch cabinet (12) and a plurality of blades (13), the blade safety monitoring system (5) comprises a measuring signal transmitting device (51), a measuring signal receiving device (52), a hub data acquisition system and a hub signal transmission system (531), the hub (11) is provided with the hub acquisition cabinet (53), the hub data acquisition system and the hub signal transmission system (531) are respectively positioned in the interior and at the top of the hub acquisition cabinet (53), and the measuring signal transmitting device (51) and the measuring signal receiving device (52) are respectively positioned at the root and at the middle of the blades (13);
the variable pitch cabinet (12) is electrically connected with the measuring signal transmitting device (51), the measuring signal receiving device (52) and the hub collecting cabinet (53) respectively, the measuring signal receiving device (52) is in communication connection with the cabin data transmission system (221) through the hub data collecting system and the hub signal transmission system (531), and the cabin data transmission system (221) is in communication connection with the central monitoring system (6) through the tower base cabinet (31).
2. Wind blade large scale safety monitoring system according to claim 1, characterized in that the nacelle pick-up cabinet (21) is powered by the nacelle cabinet (22) or the tower base cabinet (31).
3. The wind-power blade large-scale safety monitoring system according to claim 1, wherein the measuring signal transmitting device (51) is a laser radar transmitting device, and the measuring signal receiving device (52) is a laser radar receiving plate.
4. Wind blade large-scale safety monitoring system according to claim 1, characterized in that the central monitoring system (6) comprises a central control switch (61) and a wind farm server (62), the nacelle data transmission system (221) is in communication connection with the central control switch (61) through the tower base cabinet (31), and the central control switch (61) is in communication connection with the wind farm server (62).
5. A large-scale safety monitoring method for a wind power blade is characterized by comprising the following steps:
s1 when the wind turbine blade is under the wind load, the measuring signal transmitting device in one blade monitoring system isL 0Emits a straight ultrasonic radar light wave,L 0to measure the distance of the signal emitting device from the blade root,L 1measuring the distance from the signal receiving device to the signal transmitting device;
s2 is located atL’=L 0+L 1The measuring signal receiving device is used for receiving the data change of the linear ultrasonic radar light wave and determining the actual deflection valueδ；
S3 passing through deflection curve function
Calculate outAt the blade tip at that momentLMaximum deflection of the position ofΔ’Wherein a, b, c and d are coefficients to be determined, and z is the distance from the middle position of the blade to the blade root;
s4, judging the relation between the maximum deflection delta' and the maximum deflection delta allowed by the blade, and further judging the influence of the safety and the operating environment of the blade on the blade.
6. The wind turbine blade large-scale safety monitoring method according to claim 5, wherein when reverse thinking is adopted, the method is based on the blade tip determined when the blade leaves factoryLMaximum deflection allowedΔCalculating the inherent maximum deflection curve of the blade
And calculating the maximum/minimum deflection value delta' allowed at the position, wherein a, b, c and d are coefficients to be determined, and z is the distance from the middle position of the blade to the blade root; comparing the actual measured deflection values of the blades thereatδWhere the maximum/minimum deflection values allowed for the bladeΔ’Further judging the influence of the safety or the operating environment of the blade on the blade.
7. The wind power blade large-scale safety monitoring method according to claim 5, characterized in that a blade limit deflection warning value and an alarm value are set, and when the deflection exceeds the set warning value, the unit runs with limited power; and when the deflection exceeds the alarm value, stopping the machine set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210104460.3A CN114396364A (en) | 2022-01-28 | 2022-01-28 | Large-scale safety monitoring system and method for wind power blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210104460.3A CN114396364A (en) | 2022-01-28 | 2022-01-28 | Large-scale safety monitoring system and method for wind power blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114396364A true CN114396364A (en) | 2022-04-26 |
Family
ID=81232822
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210104460.3A Pending CN114396364A (en) | 2022-01-28 | 2022-01-28 | Large-scale safety monitoring system and method for wind power blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114396364A (en) |
-
2022
- 2022-01-28 CN CN202210104460.3A patent/CN114396364A/en active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7895018B2 (en) | Event monitoring via combination of signals | |
| US20100135790A1 (en) | Wind turbine blade with foreign matter detection devices | |
| US9523354B2 (en) | Ice detection method and system for wind turbine blades | |
| EP2626553B1 (en) | Monitoring the operation of a wind energy plant | |
| EP2374010B1 (en) | Turbulence sensor and blade condition sensor system | |
| EP2705376B1 (en) | A wind turbine optical wind sensor | |
| CN101818724A (en) | Intelligent blade of wind driven generator | |
| US10844842B2 (en) | Abnormality monitoring apparatus and abnormality monitoring method for wind farm | |
| EP2593671B1 (en) | Method and system for monitoring bending strain on wind turbine blades | |
| EP2588755A2 (en) | Callibration of wind turbine sensor | |
| US20100135796A1 (en) | Monitoring joint efficiency in wind turbine rotor blades | |
| CN101813055A (en) | Wind driven generator with blade-tip deflection detection | |
| CN113404652A (en) | Method for monitoring state of blade of wind generating set in severe environment | |
| JP6258339B2 (en) | Wind turbine device, wind turbine device abnormality detection device, and wind turbine device abnormality detection method | |
| CN106768917A (en) | A kind of pneumatic equipment bladess scene load test and appraisal procedure | |
| CN207600740U (en) | A kind of monitoring system for wind-driven generator | |
| CN105822508B (en) | A kind of system for the blade deformation for monitoring wind power plant | |
| CN114396364A (en) | Large-scale safety monitoring system and method for wind power blade | |
| EP4180658A1 (en) | Optimal position for wind turbine blade sound signal collection and selection method therefor | |
| DK179188B1 (en) | Wind turbine and a method of operating a wind turbine | |
| CN108760018A (en) | A kind of power transformation combined frame work wind pulse on-line monitoring system and method based on laser ranging | |
| CN102914360A (en) | Monitoring device and monitoring method for vibration of redundancy type wind turbine generator | |
| CN217176802U (en) | Wind-powered electricity generation blade large-scale safety monitoring system | |
| CN216665824U (en) | Blade surface stress monitoring system | |
| CN113958465A (en) | Blade surface stress monitoring system and working method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |