CN117869221A - Wind generating set safety control method, system and equipment based on blade tip clearance - Google Patents
Wind generating set safety control method, system and equipment based on blade tip clearance Download PDFInfo
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- CN117869221A CN117869221A CN202410132512.7A CN202410132512A CN117869221A CN 117869221 A CN117869221 A CN 117869221A CN 202410132512 A CN202410132512 A CN 202410132512A CN 117869221 A CN117869221 A CN 117869221A
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- tip clearance
- generating set
- blade tip
- wind generating
- safety
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 238000011217 control strategy Methods 0.000 claims abstract description 42
- 238000004590 computer program Methods 0.000 claims description 11
- 238000012937 correction Methods 0.000 claims description 5
- 238000004364 calculation method Methods 0.000 claims description 3
- 238000003306 harvesting Methods 0.000 claims description 3
- 238000010977 unit operation Methods 0.000 claims description 3
- 238000010408 sweeping Methods 0.000 abstract description 4
- 238000012545 processing Methods 0.000 description 4
- 239000012530 fluid Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000006467 substitution reaction 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
- 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
-
- 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
Landscapes
- 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 invention provides a wind generating set safety control method, a system and equipment based on blade tip clearance, which comprise the following steps: step 1, calculating a multi-level safety threshold value of blade tip clearance corresponding to a wind generating set to be tested; step 2, setting a security control strategy of the wind generating set to be tested according to the multi-level security threshold value; step 3, controlling the operation of the wind generating set to be tested according to the obtained safety control strategy of the wind generating set to be tested; the invention can evaluate and adopt a safety control strategy of variable pitch, reduce the risk of tower sweeping and ensure the safety of the blades and the fan.
Description
Technical Field
The invention belongs to the field of wind power generation safety, and particularly relates to a wind generating set safety control method, system and equipment based on blade tip clearance.
Background
With the continuous development of the industry, the single-machine capacity of the wind generating set is larger and larger, and the diameter of the impeller is larger and the blades are longer and longer. The increase in the length of the blade is directly reflected in that the overall rigidity of the blade is reduced, and the deformation of the blade is increased in the running process of the wind generating set. The distance (blade tip clearance) between the blade tip and the outer wall of the tower barrel is smaller and smaller, so that the blade tip clearance becomes one of key technical indexes of the design of the supporting structure of the wind generating set.
Meanwhile, in the running of the wind generating set, the phenomenon of sweeping the tower by the blades is endangered due to the large deformation of the blades, and the tower drum of the wind generating set is endangered.
In order to avoid the occurrence of the phenomenon of blade tower sweeping as much as possible and ensure the safety of the wind generating set, no corresponding safety control strategy of the wind generating set exists at present, and only under the condition that the extreme wind gust or the wind speed exceeds the cut-out wind speed, the wind-collecting action is adopted, so that the wind generating set is also an emergency shutdown or a normal shutdown action, and the wind generating set belongs to a shutdown protection strategy under the extreme condition.
Disclosure of Invention
The invention aims to provide a wind generating set safety control method, a system and equipment based on blade tip clearance, which solve the defect that the existing wind generating set tower has potential safety hazard.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the invention provides a wind generating set safety control method based on blade tip clearance, which comprises the following steps:
step 1, calculating a multi-level safety threshold value of blade tip clearance corresponding to a wind generating set to be tested;
step 2, setting a security control strategy of the wind generating set to be tested according to the multi-level security threshold value;
and step 3, controlling the operation of the wind generating set to be tested according to the obtained safety control strategy of the wind generating set to be tested.
Preferably, in step 1, a multi-stage safety threshold value of a blade tip clearance corresponding to a wind generating set to be tested is calculated, and the specific method is as follows:
and obtaining the corresponding instantaneous turbulence degree of the wind driven generator to be detected and the average wind speed in a set time period, and calculating the multilevel safety threshold value of the blade tip clearance according to the safety requirement of the tower barrel.
Preferably, the multi-level safety threshold for tip clearance is calculated according to the following formula:
wherein k is v1 Correcting the coefficient for the average wind speed; k (k) i1 Is a turbulence correction coefficient; v is the average wind speed; i is the instantaneous turbulence; f is a tip clearance safety threshold.
Preferably, the multi-level safety threshold is a three-level safety threshold, which is respectively a blade tip clearance safety threshold requiring emergency blade collection, a blade tip clearance safety threshold requiring normal blade collection and a blade tip clearance safety threshold not requiring blade collection, wherein the blade tip clearance safety threshold requiring emergency blade collection is a first-level safety threshold, the blade tip clearance safety threshold requiring normal blade collection is a second-level safety threshold, and the blade tip clearance safety threshold not requiring blade collection is a third-level safety threshold.
Preferably, in step 2, a security control strategy of the wind generating set is set according to a multi-level security threshold, and the specific method is as follows:
measuring the tip clearance value of the wind driven generator to be measured in real time;
and setting a wind generating set safety control strategy by matching the obtained blade tip clearance value with the set multilevel safety threshold value.
Preferably, the safety control strategy of the wind generating set is specifically as follows:
when the measured blade tip clearance value is smaller than or equal to a first-level safety threshold value, the corresponding safety control strategy is emergency blade collection and generator torque is reduced;
when the measured blade tip clearance value is larger than the primary safety threshold value and smaller than or equal to the secondary safety threshold value, the corresponding safety control strategy is to rapidly harvest the blade;
when the measured blade tip clearance value is larger than the second-level safety threshold value and smaller than or equal to the third-level safety threshold value, the corresponding safety control strategy is normal pitch-up.
Wind generating set safety control system based on apex headroom includes the following steps:
the safety threshold value calculation unit is used for calculating a multi-stage safety threshold value of the blade tip clearance corresponding to the wind generating set to be detected;
the control strategy setting unit is used for setting the safety control strategy of the wind generating set to be tested according to the multi-level safety threshold value;
and the unit operation control unit is used for controlling the operation of the wind generating set to be tested according to the obtained safety control strategy of the wind generating set to be tested.
A computer apparatus/device/system comprising a memory, a processor and a computer program stored on the memory, the processor executing the computer program to perform the steps of the method.
A computer readable storage medium having stored thereon a computer program/instructions which when executed by a processor perform the steps of the method.
Compared with the prior art, the invention has the beneficial effects that:
according to the wind generating set safety control method based on the blade tip clearance, the blade tip clearance multistage safety threshold is calculated, then the safety control strategy is set based on the blade tip clearance safety threshold, finally the blade and wind turbine safety is ensured by evaluating and adopting the variable-pitch safety control strategy according to the blade tip clearance and external environment parameters of the wind generating set.
Drawings
FIG. 1 is a flow chart of the present invention;
FIG. 2 is a schematic diagram of the control strategy of the present invention.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system configurations, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. It will be apparent, however, to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
Example 1
As shown in fig. 1 and 2, the method for providing safety control of a wind generating set based on blade tip clearance according to the present embodiment includes the following steps:
step 1, calculating a multi-level safety threshold value of the blade tip clearance;
step 2, setting a safety control strategy of the wind generating set according to the multi-level safety threshold value;
and step 3, controlling the operation of the wind generating set according to the obtained safety control of the wind generating set.
The embodiment calculates the blade tip clearance multi-level safety threshold, a blade tip clearance-based safety control strategy and a hardware and software system for realizing the safety control strategy. The system evaluates and adopts a variable-pitch safety control strategy according to blade tip clearance and external environment parameters of the wind generating set, reduces the risk of tower sweeping, and ensures the safety of blades and fans.
Example 2
Based on embodiment 1, the wind generating set safety control method based on the blade tip clearance provided in this embodiment, in step 1, calculates a multi-stage safety threshold of the blade tip clearance, and the specific method is as follows:
acquiring the corresponding instantaneous turbulence degree of the wind driven generator to be detected and the average wind speed in a set time period, and calculating a multi-stage safety threshold value of the blade tip clearance according to the safety requirement of the tower barrel;
the multi-level safety threshold is a three-level safety threshold, and the blade tip clearance safety threshold required for emergency blade collection is a first-level safety threshold, the blade tip clearance safety threshold required for normal blade collection is a second-level safety threshold, and the blade tip clearance safety threshold not required for blade collection is a three-level safety threshold.
Calculating a tip clearance safety threshold according to:
wherein: k (k) v1 Correcting the coefficient for the average wind speed; k (k) i1 Is a turbulence correction coefficient; v is the average wind speed; i is the instantaneous turbulence; f is a tip clearance safety threshold.
And the determination of the average wind speed correction coefficient and the turbulence correction coefficient is determined according to the safety requirements and the actual condition of the wind farm.
Example 3
Based on embodiment 1, in step 2, a wind turbine generator set safety control strategy is set according to a multi-level safety threshold, and the specific method is as follows:
measuring the tip clearance value of the wind driven generator to be measured in real time;
and setting a wind generating set safety control strategy by matching the obtained blade tip clearance value with the set multilevel safety threshold value.
The safety control strategy of the wind generating set is specifically as follows:
when the measured blade tip clearance value is smaller than or equal to a first-level safety threshold value, the corresponding safety control strategy is emergency blade collection and generator torque is reduced;
when the measured blade tip clearance value is larger than the primary safety threshold value and smaller than or equal to the secondary safety threshold value, the corresponding safety control strategy is to rapidly harvest the blade;
when the measured blade tip clearance value is larger than the second-level safety threshold value and smaller than or equal to the third-level safety threshold value, the corresponding safety control strategy is normal pitch-up.
Wherein fs is the blade clearance actual measurement; f1 is a first-level safety threshold; f2 is a secondary safety threshold; f3 is a three-level safety threshold.
Example 2
On the basis of embodiment 1, the wind generating set safety control system based on blade tip clearance provided by the embodiment comprises the following steps:
the safety threshold value calculation unit is used for calculating a multi-stage safety threshold value of the blade tip clearance corresponding to the wind generating set to be detected;
the control strategy setting unit is used for setting the safety control strategy of the wind generating set to be tested according to the multi-level safety threshold value;
and the unit operation control unit is used for controlling the operation of the wind generating set to be tested according to the obtained safety control strategy of the wind generating set to be tested.
Example 3
On the basis of embodiment 1, the terminal device provided in this embodiment includes a processor and a memory, where the memory is configured to store a computer program, the computer program includes program instructions, and the processor is configured to execute the program instructions stored in the computer storage medium. The processor may be a central processing unit (Central Processing Unit, CPU), but may also be other general purpose processor, digital signal processor (Digital Signal Processor, DSP), application specific integrated circuit (Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate array (Field-Programmable Gate Array, FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, etc., which are the computational core and control core of the terminal adapted to implement one or more instructions, in particular to load and execute one or more instructions to implement the corresponding method flow or corresponding functions; the processor of the present embodiment may be used for the operation of the method of embodiment 1.
Example 4
On the basis of embodiment 1, the computer device provided in this embodiment includes: the present invention relates to a method for calculating the composition of fluids in a reservoir inversion wellbore in an embodiment, and more particularly, to a method for calculating the composition of fluids in a reservoir inversion wellbore in an embodiment, wherein the method is not described in detail herein. Alternatively, the computer program, when executed by the processor, implements the functions of each model/unit in the system of embodiment 2, and in order to avoid repetition, it is not described in detail herein.
The computer device may be a desktop computer, a notebook computer, a palm computer, a cloud server, or the like. Computer devices may include, but are not limited to, processors, memory. More or fewer components than shown may be included or certain components may be combined, or different components may be included, for example, a computer device may also include an input-output device, a network access device, a bus, etc.
The processor may be a central processing unit (Central Processing Unit, CPU), other general purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), field programmable gate arrays (Field-Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory may be an internal storage unit of the computer device, such as a hard disk or a memory of the computer device. The memory may also be an external storage device of the computer device, such as a plug-in hard disk provided on the computer device, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), or the like.
Further, the memory may also include both internal storage units and external storage devices of the computer device. The memory is used to store computer programs and other programs and data required by the computer device. The memory may also be used to temporarily store data that has been output or is to be output.
In yet another embodiment, the present embodiment further provides a storage medium, specifically a computer readable storage medium (Memory), which is a Memory device in the terminal device, for storing the program and the data. It will be appreciated that the computer readable storage medium herein may include both a built-in storage medium in the terminal device and an extended storage medium supported by the terminal device. The computer-readable storage medium provides a storage space storing an operating system of the terminal. Also stored in the memory space are one or more instructions, which may be one or more computer programs (including program code), adapted to be loaded and executed by the processor. The computer readable storage medium may be a high-speed RAM Memory or a Non-Volatile Memory (Non-Volatile Memory), such as at least one magnetic disk Memory.
One or more instructions stored in a computer-readable storage medium may be loaded and executed by a processor to implement the corresponding steps of the method described in the above embodiments with respect to embodiment 1; one or more instructions in a computer-readable storage medium are loaded by a processor and perform the steps of the method described in embodiment 1.
The above embodiments are only for illustrating the technical solution of the present application, and are not limiting; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application.
Claims (9)
1. The wind generating set safety control method based on blade tip clearance is characterized by comprising the following steps of:
step 1, calculating a multi-level safety threshold value of blade tip clearance corresponding to a wind generating set to be tested;
step 2, setting a security control strategy of the wind generating set to be tested according to the multi-level security threshold value;
and step 3, controlling the operation of the wind generating set to be tested according to the obtained safety control strategy of the wind generating set to be tested.
2. The wind generating set safety control method based on blade tip clearance according to claim 1, wherein in step 1, a multi-stage safety threshold value of the blade tip clearance corresponding to the wind generating set to be tested is calculated, and the specific method is as follows:
and obtaining the corresponding instantaneous turbulence degree of the wind driven generator to be detected and the average wind speed in a set time period, and calculating the multilevel safety threshold value of the blade tip clearance according to the safety requirement of the tower barrel.
3. The blade tip clearance-based wind generating set safety control method of claim 2, wherein the multi-stage safety threshold for blade tip clearance is calculated according to the formula:
wherein k is v1 Correcting the coefficient for the average wind speed; k (k) i1 Is a turbulence correction coefficient; v is the average wind speed; i is the instantaneous turbulence; f is a tip clearance safety threshold.
4. The blade tip clearance-based wind generating set safety control method according to claim 2, wherein the multi-level safety threshold is a three-level safety threshold, which is respectively a blade tip clearance safety threshold requiring emergency pitching, a blade tip clearance safety threshold requiring normal pitching, and a blade tip clearance safety threshold requiring no pitching action, wherein the blade tip clearance safety threshold requiring emergency pitching is a first-level safety threshold, the blade tip clearance safety threshold requiring normal pitching is a second-level safety threshold, and the blade tip clearance safety threshold requiring no pitching action is a third-level safety threshold.
5. The blade tip clearance-based wind generating set safety control method according to claim 1, wherein in step 2, a wind generating set safety control strategy is set according to a multi-level safety threshold, and the specific method is as follows:
measuring the tip clearance value of the wind driven generator to be measured in real time;
and setting a wind generating set safety control strategy by matching the obtained blade tip clearance value with the set multilevel safety threshold value.
6. The blade tip clearance-based wind generating set safety control method according to claim 5, wherein the set wind generating set safety control strategy specifically comprises:
when the measured blade tip clearance value is smaller than or equal to a first-level safety threshold value, the corresponding safety control strategy is emergency blade collection and generator torque is reduced;
when the measured blade tip clearance value is larger than the primary safety threshold value and smaller than or equal to the secondary safety threshold value, the corresponding safety control strategy is to rapidly harvest the blade;
when the measured blade tip clearance value is larger than the second-level safety threshold value and smaller than or equal to the third-level safety threshold value, the corresponding safety control strategy is normal pitch-up.
7. Wind generating set safety control system based on apex headroom, its characterized in that includes following steps:
the safety threshold value calculation unit is used for calculating a multi-stage safety threshold value of the blade tip clearance corresponding to the wind generating set to be detected;
the control strategy setting unit is used for setting the safety control strategy of the wind generating set to be tested according to the multi-level safety threshold value;
and the unit operation control unit is used for controlling the operation of the wind generating set to be tested according to the obtained safety control strategy of the wind generating set to be tested.
8. A computer apparatus/device/system comprising a memory, a processor and a computer program stored on the memory, wherein the processor executes the computer program to perform the steps of the method of claim 1.
9. A computer readable storage medium having stored thereon a computer program/instruction which when executed by a processor performs the steps of the method of claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410132512.7A CN117869221A (en) | 2024-01-29 | 2024-01-29 | Wind generating set safety control method, system and equipment based on blade tip clearance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410132512.7A CN117869221A (en) | 2024-01-29 | 2024-01-29 | Wind generating set safety control method, system and equipment based on blade tip clearance |
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| CN117869221A true CN117869221A (en) | 2024-04-12 |
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| CN202410132512.7A Pending CN117869221A (en) | 2024-01-29 | 2024-01-29 | Wind generating set safety control method, system and equipment based on blade tip clearance |
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| Country | Link |
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| CN (1) | CN117869221A (en) |
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- 2024-01-29 CN CN202410132512.7A patent/CN117869221A/en active Pending
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