CN116085214A - Method and system for monitoring unbalance of wind driven generator blade and electronic equipment - Google Patents

Method and system for monitoring unbalance of wind driven generator blade and electronic equipment Download PDF

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Publication number
CN116085214A
CN116085214A CN202310036908.7A CN202310036908A CN116085214A CN 116085214 A CN116085214 A CN 116085214A CN 202310036908 A CN202310036908 A CN 202310036908A CN 116085214 A CN116085214 A CN 116085214A
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CN
China
Prior art keywords
blade
driven generator
width
wind driven
depth
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
Application number
CN202310036908.7A
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Chinese (zh)
Inventor
刘晓枫
刘张辉
潘海军
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BEIJING HAN ENERGY TECHNOLOGY CO LTD
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BEIJING HAN ENERGY TECHNOLOGY CO LTD
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by BEIJING HAN ENERGY TECHNOLOGY CO LTD filed Critical BEIJING HAN ENERGY TECHNOLOGY CO LTD
Priority to CN202310036908.7A priority Critical patent/CN116085214A/en
Publication of CN116085214A publication Critical patent/CN116085214A/en
Pending legal-status Critical Current

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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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/22—Measuring arrangements characterised by the use of optical techniques for measuring depth
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M1/00—Testing static or dynamic balance of machines or structures
    • G01M1/14—Determining unbalance
    • 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 provides a method, a system and electronic equipment for monitoring unbalance of a wind driven generator blade, and relates to the technical field of wind driven generator monitoring. Acquiring the depth and the width of each blade of the wind driven generator; the depth and width of each blade are determined by the detection data of the laser sensor on the wind driven generator; and determining the balance state of the blades of the wind driven generator according to the depth and the width of each blade of the wind driven generator. According to the invention, the unbalanced monitoring of the wind driven generator blade can be completed by monitoring the depth and width information of the blade.

Description

Method and system for monitoring unbalance of wind driven generator blade and electronic equipment
Technical Field
The invention relates to the technical field of wind driven generator monitoring, in particular to a wind driven generator blade unbalance monitoring method, a wind driven generator blade unbalance monitoring system and electronic equipment.
Background
The blades of the wind driven generator are the power source of the wind driven generator and are important components of the wind generating set. The unbalanced blades of the wind turbine generator set can bring vibration with large swing amplitude to the wind turbine generator set, and the service life and safety of the wind turbine generator set are damaged. The unbalanced wind turbine generator system blade mainly comprises two aspects of mass unbalance and aerodynamic unbalance, and causes of the unbalanced wind turbine generator system blade mainly comprise uneven blade mass distribution, installation angle errors, faults of a variable pitch mechanism, misalignment of a low-speed shaft, water seepage and icing, and aerodynamic characteristics caused by lightning strike bird strike of the wind turbine generator system blade deviate from design values. Therefore, a technology for timely and effectively finding out the unbalanced faults of the wind turbine generator blades is needed to remind customers of timely maintenance and adjustment, and personnel and economic losses caused by major accidents are avoided.
Disclosure of Invention
The invention aims to provide a method, a system and electronic equipment for monitoring unbalance of a wind driven generator blade, which can complete monitoring of unbalance of the wind driven generator blade.
In order to achieve the above object, the present invention provides the following solutions:
a method of monitoring blade imbalance of a wind turbine, comprising:
acquiring the depth and the width of each blade of the wind driven generator; the depth and the width of each blade are determined by detection data of the laser sensor on the wind driven generator;
and determining the balance state of the blades of the wind driven generator according to the depth and the width of each blade of the wind driven generator.
Optionally, the number of blades of the wind driven generator is greater than 2.
Optionally, the number of blades of the wind driven generator is 3.
Optionally, the determining the balance state of the wind driven generator blade according to the depth and the width of each blade of the wind driven generator comprises:
taking absolute values after carrying out pairwise difference on the depth of each blade of the wind driven generator to obtain a first depth difference value, a second depth difference value and a third depth difference value;
judging whether the first depth difference value, the second depth difference value and the third depth difference value are smaller than a depth difference value threshold value or not, and obtaining a first judgment result;
if the first judgment result is yes, determining the balance state of the wind driven generator blades according to the width of each blade of the wind driven generator;
and if the first judgment result is negative, determining that the blades of the wind driven generator are in an unbalanced state.
Optionally, the determining the balance state of the wind driven generator blade according to the width of each blade of the wind driven generator comprises:
taking absolute values after carrying out pairwise difference on the width of each blade of the wind driven generator to obtain a first width difference value, a second width difference value and a third width difference value;
judging whether the first width difference value, the second width difference value and the third width difference value are smaller than a width difference value threshold value or not, and obtaining a second judging result;
if the second judgment result is yes, determining that the blades of the wind driven generator are in a balanced state;
and if the second judgment result is negative, determining that the blades of the wind driven generator are in an unbalanced state.
Optionally, after determining the balance state of the wind turbine blade according to the depth and the width of each blade of the wind turbine, the method further includes:
and when the blades of the wind driven generator are in an unbalanced state, sending out alarm information.
A wind turbine blade imbalance monitoring system comprising:
the data acquisition module is used for acquiring the depth and the width of each blade of the wind driven generator; the depth and the width of each blade are determined by detection data of the laser sensor on the wind driven generator;
and the balance state determining module is used for determining the balance state of the wind driven generator blades according to the depth and the width of each blade of the wind driven generator.
An electronic device comprising a memory for storing a computer program and a processor that runs the computer program to cause the electronic device to perform the method of monitoring blade imbalance of a wind turbine.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides a method, a system and electronic equipment for monitoring unbalance of blades of a wind driven generator, which are used for acquiring the depth and the width of each blade of the wind driven generator; the depth and width of each blade are determined by the detection data of the laser sensor on the wind driven generator; and determining the balance state of the blades of the wind driven generator according to the depth and the width of each blade of the wind driven generator. According to the invention, the unbalanced monitoring of the wind driven generator blade can be completed by monitoring the depth and width information of the blade.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions of the prior art, the drawings that are needed in the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a flowchart of a method for monitoring blade imbalance of a wind turbine according to embodiment 1 of the present invention;
FIG. 2 is a schematic diagram of blade imbalance monitoring for a wind turbine according to embodiment 1 of the present invention;
fig. 3 is a schematic structural diagram of an electronic device according to embodiment 3 of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a method, a system and electronic equipment for monitoring unbalance of a wind driven generator blade, which can complete monitoring of unbalance of the wind driven generator blade.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.
Example 1
As shown in fig. 1 and 2, the present embodiment provides a method for monitoring blade imbalance of a wind turbine, including:
step 101: acquiring the depth and the width of each blade of the wind driven generator; the depth and the width of each blade are determined by detection data of the laser sensor on the wind driven generator; the number of blades of the wind driven generator is more than 2. The number of blades of the wind driven generator is 3.
Step 102: and determining the balance state of the blades of the wind driven generator according to the depth and the width of each blade of the wind driven generator.
For example, step 102 includes:
step 1021: and taking absolute values after carrying out pairwise difference on the depth of each blade of the wind driven generator to obtain a first depth difference value, a second depth difference value and a third depth difference value.
Step 1022: and judging whether the first depth difference value, the second depth difference value and the third depth difference value are smaller than a depth difference value threshold value or not, and obtaining a first judgment result. If the first judgment result is yes, executing step 1023; if the first determination result is no, step 1024 is executed.
Step 1023: and determining the balance state of the blades of the wind driven generator according to the width of each blade of the wind driven generator.
For example, step 1023: comprising the following steps:
step 10231: and taking absolute values after carrying out pairwise difference on the width of each blade of the wind driven generator to obtain a first width difference value, a second width difference value and a third width difference value.
Step 10232: judging whether the first width difference value, the second width difference value and the third width difference value are smaller than a width difference value threshold value or not, and obtaining a second judging result; if the second judgment result is yes, executing step 10233; if the second determination result is no, step 10234 is performed.
Step 10233: and determining that the blades of the wind driven generator are in a balanced state.
Step 10234: it is determined that the blades of the wind turbine are in an unbalanced state.
Step 1024: it is determined that the blades of the wind turbine are in an unbalanced state.
Step 103: and when the blades of the wind driven generator are in an unbalanced state, sending out alarm information.
In the embodiment, the data acquisition equipment is arranged on the fan tower, the laser sensor of the equipment is aligned with the blade of the wind driven generator, and the equipment is required to form a certain angle with the blade, so that the equipment can best present the difference of three blades. In the running process of the wind driven generator, the device confirms the width information and the depth information of three blades in the running process of the wind driven generator by collecting the change of the distance information from the device to the blades and the change of the time information. Through the algorithm built in the equipment, the difference of width information and depth information of three blades of the wind driven generator is compared and analyzed, and the difference causes unbalance in the running process of the fan, so that the integral load of the fan is increased, the service life of the equipment is shortened, and serious accidents of tower falling can be caused under serious conditions.
The wind driven generator blade collected by the laser sensor is periodic cycle data, the periodic edge is detected by an edge detection method, and every 3 periods are used as data for one detection; 3 periods are in one-to-one correspondence with the blades; and determining the maximum value acquired by the laser sensor in the period as the corresponding blade depth; the period width is determined to be the corresponding blade width.
Example 2
In order to perform the method corresponding to embodiment 1 above to achieve the corresponding functions and technical effects, a wind turbine blade imbalance monitoring system is provided below, including:
the data acquisition module is used for acquiring the depth and the width of each blade of the wind driven generator; the depth and width of each blade is determined by the detection data of the laser sensor on the wind turbine.
And the balance state determining module is used for determining the balance state of the blades of the wind driven generator according to the depth and the width of each blade of the wind driven generator.
Example 3
The present embodiment provides an electronic device, including a memory and a processor, where the memory is configured to store a computer program, and the processor is configured to execute the computer program to cause the electronic device to perform a method for monitoring blade imbalance of a wind turbine as described in embodiment 1. Wherein the data in the memory can be transmitted by communication. The electronic device structure is shown in fig. 3.
According to the wind driven generator blade unbalance monitoring method, system and electronic equipment, the profile information of the wind driven generator blade in the rotation process is depicted through the laser sensor, the profile information comprises depth information and width information, and the quality and aerodynamic unbalance of the three blades of the wind driven generator are judged through calculating, analyzing and comparing the difference of the depth information and the width information of the three blades. According to the technology, the blade imbalance caused by uneven blade quality, installation angle errors, faults of a pitch mechanism, misalignment of a low-speed shaft, water seepage and icing of the blade, deviation of aerodynamic characteristics caused by lightning stroke, bird strike and the like is analyzed by comparing the differences of the outlines of the three blades, so that damage to wind sweeping abnormal sound, loss of generated energy, unit vibration, yaw abnormal sound, premature failure of a yaw part, tower foundation cracks, wind turbine tower pouring and the like caused by the imbalance of the blade is avoided, and the loss of customers is reduced.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the system disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The principles and embodiments of the present invention have been described herein with reference to specific examples, the description of which is intended only to assist in understanding the methods of the present invention and the core ideas thereof; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.

Claims (8)

1. A method for monitoring blade imbalance of a wind turbine, comprising:
acquiring the depth and the width of each blade of the wind driven generator; the depth and the width of each blade are determined by detection data of the laser sensor on the wind driven generator;
and determining the balance 5 of the blades of the wind driven generator according to the depth and the width of each blade of the wind driven generator.
2. A method of monitoring blade imbalance in a wind turbine according to claim 1, wherein the number of blades in the wind turbine is greater than 2.
3. A method of monitoring blade imbalance in a wind turbine according to claim 1, wherein the number of blades in the wind turbine is 3.
4. A method of monitoring blade imbalance in a wind turbine according to claim 3, wherein determining the balance of the wind turbine blade based on the depth and width of each blade of the wind turbine comprises:
taking absolute values after carrying out pairwise difference on the depth of each blade of the wind driven generator to obtain a first depth difference value, a second depth difference value and a third depth difference value;
judging whether the first depth difference value, the second depth difference value and the third depth difference value are smaller than a depth difference value threshold value or not, and obtaining a first judgment result;
if the first judgment result is yes, determining the balance state of the wind driven generator blades according to the width of each blade of the wind driven generator;
and if the first judgment result is negative, determining that the blades of the wind driven generator are in an unbalanced state.
5. The method for monitoring blade imbalance of a wind turbine according to claim 4, wherein determining a balance state of the wind turbine blade based on a width of each blade of the wind turbine comprises:
taking absolute values after carrying out pairwise difference on the width of each blade of the wind driven generator to obtain a first width difference value, a second width difference value and a third width difference value;
judging whether the first width difference value, the second width difference value and the third width difference value are smaller than a width difference value threshold value or not, and obtaining a second judging result;
if the second judgment result is yes, determining that the blades of the wind driven generator are in a balanced state;
and if the second judgment result is negative, determining that the blades of the wind driven generator are in an unbalanced state.
6. A method of monitoring blade imbalance in a wind turbine according to claim 1, further comprising, after said determining the balance of the wind turbine blades based on the depth and width of each blade of the wind turbine:
and when the blades of the wind driven generator are in an unbalanced state, sending out alarm information.
7. A wind turbine blade imbalance monitoring system, comprising:
the data acquisition module is used for acquiring the depth and the width of each blade of the wind driven generator; the depth and the width of each blade are determined by detection data of the laser sensor on the wind driven generator;
and the balance state determining module is used for determining the balance state of the wind driven generator blades according to the depth and the width of each blade of the wind driven generator.
8. An electronic device comprising a memory for storing a computer program and a processor that runs the computer program to cause the electronic device to perform a method of monitoring blade imbalance of a wind turbine according to any one of claims 1 to 6.
CN202310036908.7A 2023-01-10 2023-01-10 Method and system for monitoring unbalance of wind driven generator blade and electronic equipment Pending CN116085214A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310036908.7A CN116085214A (en) 2023-01-10 2023-01-10 Method and system for monitoring unbalance of wind driven generator blade and electronic equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310036908.7A CN116085214A (en) 2023-01-10 2023-01-10 Method and system for monitoring unbalance of wind driven generator blade and electronic equipment

Publications (1)

Publication Number Publication Date
CN116085214A true CN116085214A (en) 2023-05-09

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310036908.7A Pending CN116085214A (en) 2023-01-10 2023-01-10 Method and system for monitoring unbalance of wind driven generator blade and electronic equipment

Country Status (1)

Country Link
CN (1) CN116085214A (en)

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