CN112943560A - Method and equipment for monitoring tower bolt of wind generating set - Google Patents
Method and equipment for monitoring tower bolt of wind generating set Download PDFInfo
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- CN112943560A CN112943560A CN202110258445.XA CN202110258445A CN112943560A CN 112943560 A CN112943560 A CN 112943560A CN 202110258445 A CN202110258445 A CN 202110258445A CN 112943560 A CN112943560 A CN 112943560A
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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
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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
- F03D13/00—Assembly, mounting or commissioning of wind motors; Arrangements specially adapted for transporting wind motor components
- F03D13/20—Arrangements for mounting or supporting wind motors; Masts or towers for wind motors
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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
- F03D80/00—Details, components or accessories not provided for in groups F03D1/00 - F03D17/00
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- 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
- F05B2220/00—Application
- F05B2220/70—Application in combination with
- F05B2220/706—Application in combination with an electrical generator
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- 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
- F05B2240/00—Components
- F05B2240/20—Rotors
- F05B2240/21—Rotors for wind turbines
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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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- 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
- Y02E10/728—Onshore wind turbines
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- 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 discloses a method and equipment for monitoring a tower bolt of a wind generating set, wherein the method comprises the following steps: collecting sound waves generated when a tower bolt of a wind generating set is knocked; determining the actual torque of the tower bolt according to the sound wave; when the difference value of the actual torque and the preset standard torque is larger than a first preset threshold value, the torque of the tower cylinder bolt is determined to be insufficient, so that the accuracy and the efficiency of monitoring the tower cylinder bolt of the wind generating set are improved, and the number of times of excessive maintenance of the tower cylinder bolt of the wind generating set is effectively reduced.
Description
Technical Field
The invention relates to the technical field of wind power generation, in particular to a method and equipment for monitoring a tower bolt of a wind generating set.
Background
The maintenance and monitoring of the tower bolt of the wind generating set are the key points of the large components of the wind generating set and the reliable operation of the wind generating set. The regular maintenance of the wind generating set is not in place, the failure rate of the wind generating set can be increased, the availability of the wind generating set is reduced, and the cost of the wind power plant in the whole life cycle of the wind generating set is increased. The current wind generating set's regular inspection is divided into half annual inspection and whole annual inspection, and the wind generating set tower section of thick bamboo bolt is maintained and is monitored mainly depending on workman's experience at the in-process of regular inspection, and the monitoring degree of accuracy is not high and efficiency is lower, maintains to wind generating set's regular inspection and is far away from the expectation, has left the risk for wind generating set's reliable operation.
Therefore, how to improve the accuracy and efficiency of monitoring the tower bolt of the wind generating set is a technical problem to be solved at present.
Disclosure of Invention
The invention provides a method for monitoring a tower bolt of a wind generating set, which is used for solving the technical problem that the tower bolt of the wind generating set cannot be accurately monitored in the prior art, and comprises the following steps:
collecting sound waves generated when a tower bolt of a wind generating set is knocked;
determining the actual torque of the tower bolt according to the sound wave;
and when the difference value of the actual moment and the preset standard moment is larger than a first preset threshold value, determining that the moment of the tower drum bolt is insufficient.
In some embodiments, determining the actual torque of the tower bolt according to the sound wave specifically includes:
carrying out Fourier transform on the sound waves to obtain Fourier transform results of the sound waves;
obtaining the actual torque of the tower cylinder bolt according to the amplitude of the Fourier transform result and a deep neural network of the tower cylinder bolt;
the tower bolt deep neural network is obtained based on the moments of a large number of tower bolts and the sound waves.
In some embodiments, the method further comprises:
and when the torque of the tower drum bolt is determined to be insufficient, determining the magnitude of the torque to be supplemented according to the actual torque and the current environment temperature.
In some embodiments, the collecting of the sound waves generated when the tower bolt of the wind turbine generator system is knocked includes:
connecting a sound wave acquisition device to the tower bolt;
knocking a preset position of the tower cylinder bolt based on a preset frequency and a preset force;
and collecting sound waves generated when the tower bolt is knocked.
In some embodiments, the method further comprises:
and when the difference value between the amplitude of the Fourier transform result and a preset standard amplitude is larger than a second preset threshold value, determining that the torque of the tower drum bolt is insufficient.
Correspondingly, this application has still provided a wind generating set tower section of thick bamboo bolt monitoring facilities, equipment includes:
the acquisition module is used for acquiring sound waves generated when a tower bolt of the wind generating set is knocked;
the moment determining module is used for determining the actual moment of the tower drum bolt according to the sound wave;
and the first judgment module is used for determining that the torque of the tower cylinder bolt is insufficient when the difference value between the actual torque and the preset standard torque is greater than a first preset threshold value.
In some embodiments, the torque determination module is specifically configured to:
carrying out Fourier transform on the sound waves to obtain Fourier transform results of the sound waves;
obtaining the actual torque of the tower cylinder bolt according to the amplitude of the Fourier transform result and a deep neural network of the tower cylinder bolt;
the tower bolt deep neural network is obtained based on the moments of a large number of tower bolts and the sound waves.
In some embodiments, the apparatus further comprises:
and when the torque of the tower drum bolt is determined to be insufficient, determining the magnitude of the torque to be supplemented according to the actual torque and the current environment temperature.
In some embodiments, the acquisition module is specifically configured to:
connecting a sound wave acquisition device to the tower bolt;
knocking a preset position of the tower cylinder bolt based on a preset frequency and a preset force;
and collecting sound waves generated when the tower bolt is knocked.
In some embodiments, the apparatus further includes a second determining module, specifically configured to:
and when the difference value between the amplitude of the Fourier transform result and a preset standard amplitude is larger than a second preset threshold value, determining that the torque of the tower drum bolt is insufficient.
Compared with the prior art, the invention has the following beneficial effects:
the invention discloses a method and equipment for monitoring a tower bolt of a wind generating set, wherein the method comprises the following steps: collecting sound waves generated when a tower bolt of a wind generating set is knocked; determining the actual torque of the tower bolt according to the sound wave; when the difference value of the actual torque and the preset standard torque is larger than a first preset threshold value, the torque of the tower cylinder bolt is determined to be insufficient, so that the accuracy and the efficiency of monitoring the tower cylinder bolt of the wind generating set are improved, the times of excessive maintenance of the tower cylinder bolt of the wind generating set are effectively reduced, the tower cylinder bolt of the generator set with insufficient torque is timely identified, and the serious wound of the wind generating set caused by factors such as overspeed, vibration and bolt breakage is avoided.
Drawings
Fig. 1 is a schematic flow chart of a monitoring method for a tower bolt of a wind turbine generator system according to an embodiment of the present disclosure;
FIG. 2 is a schematic flow chart illustrating a method for monitoring a tower bolt of a wind turbine generator system according to another embodiment of the present disclosure;
fig. 3 is a schematic structural diagram of a monitoring device for a tower bolt of a wind turbine generator system according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present application.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
As described in the background art, in the prior art, the tower bolts of the wind generating set are maintained and monitored by means of worker experience, the monitoring accuracy is not high, the efficiency is low, the scheduled maintenance of the wind generating set is far from expectation, and risks are left for the reliable operation of the wind generating set.
In order to solve the above problem, the present application provides a method for monitoring a tower bolt of a wind turbine generator system, as shown in fig. 1, the method includes:
s101, collecting sound waves generated when a tower bolt of the wind generating set is knocked.
In the step, sound waves generated when the tower cylinder bolts of the wind generating set are knocked are collected firstly, the fastening degrees of the tower cylinder bolts of the wind generating set are different, the sound waves generated when the tower cylinder bolts are knocked are different, further judgment is carried out by collecting the sound waves of different tower cylinder bolts, and the sound waves generated when the tower cylinder bolts are knocked belong to parameters which are collected well, so that the collection efficiency is further improved.
In order to accurately obtain the sound wave of the tower bolt, in some embodiments, the sound wave generated when the tower bolt of the wind turbine generator system is knocked is collected, specifically:
connecting a sound wave acquisition device to the tower bolt;
knocking a preset position of the tower cylinder bolt based on a preset frequency and a preset force;
and collecting sound waves generated when the tower bolt is knocked.
Specifically, in order to ensure that the collected sound waves have the same reference value, the sound wave collecting device is connected to a tower bolt of the wind generating set, then the preset position of the tower bolt is knocked according to the preset frequency and the preset force, the preset frequency, the preset force and the preset position can be obtained through experiments, the sound wave collecting device is mainly used for ensuring that the conditions for generating the sound waves collected at each time are the same, and the optimal conditions for generating the optimal sound waves can be selected through the experiments. Optionally, the bolts of the tower barrel can be manually beaten by a special hammer, or can be beaten automatically by equipment according to a preset condition by arranging a fixed rocker structure. And when the tower bolt is knocked, the sound wave generated when the tower bolt is knocked is obtained through the sound wave collecting device.
It should be noted that the above solution of the preferred embodiment is only one specific implementation solution proposed in the present application, and other methods for collecting sound waves generated when a tower bolt of a wind turbine generator system is knocked belong to the protection scope of the present application.
And S102, determining the actual torque of the tower bolt according to the sound wave.
In this step, after the sound wave generated when the tower bolt is knocked is obtained, the actual torque of the tower bolt is determined according to the sound wave, optionally, the sound wave is filtered by a preset filtering algorithm after the sound wave is obtained, so that the interference sound waves are removed, and then the actual torque of the tower bolt is determined according to the filtered sound wave.
In order to accurately obtain the actual torque of the tower bolt, in some examples, the actual torque of the tower bolt is determined according to the sound wave, specifically:
carrying out Fourier transform on the sound waves to obtain Fourier transform results of the sound waves;
obtaining the actual torque of the tower cylinder bolt according to the amplitude of the Fourier transform result and a deep neural network of the tower cylinder bolt;
the tower bolt deep neural network is obtained based on the moments of a large number of tower bolts and the sound waves.
Specifically, a tower cylinder bolt deep-layer neural network model is established according to the torque of a plurality of groups of tower cylinder bolts and corresponding sound waves, then the tower cylinder bolt deep-layer neural network model is trained through the torque of a large number of tower cylinder bolts and the corresponding sound waves to obtain a tower cylinder bolt deep-layer neural network DQN, after the sound waves generated when the tower cylinder bolts are knocked are obtained, Fourier transformation is carried out on the sound waves, the sound waves are converted into impact quantity from time variables, the Fourier transformation results of the sound waves can be compared in size through amplitude values, and then the amplitude values are converted into actual torque of the tower cylinder bolts through the tower cylinder bolt deep-layer neural network.
It should be noted that the solution of the above preferred embodiment is only one specific implementation solution proposed in the present application, and other methods based on determining the actual moment of the tower bolt according to the sound wave are all within the protection scope of the present application.
S103, when the difference value between the actual torque and the preset standard torque is larger than a first preset threshold value, determining that the torque of the tower cylinder bolt is insufficient.
In the step, after the actual torque of the tower drum bolt is obtained, the difference value of the actual torque and the preset standard torque is compared, and when the difference value of the actual torque and the preset standard torque is larger than a first preset threshold value, the torque of the tower drum bolt is determined to be insufficient. The preset standard torque and the first preset threshold value can be set as required, and optionally, the torque of the bolt can be supplemented as required after the insufficient torque of the tower drum bolt is determined.
To accurately supplement the tower bolts with torque, in some embodiments, the method further comprises:
and when the torque of the tower drum bolt is determined to be insufficient, determining the magnitude of the torque to be supplemented according to the actual torque and the current environment temperature.
Specifically, when the torque of the tower bolt is determined to be insufficient, the magnitude of the torque to be supplemented can be determined according to the difference between the actual torque and the preset standard torque, but because the torque required by the tower bolt of the wind driven generator in different outdoor working environments is different, the influence of the environment on the torque is also required to be considered in addition to the difference between the actual torque and the standard torque, the current environment temperature is obtained after the difference between the actual torque and the preset standard torque is obtained, then the difference is adjusted according to the environment temperature, and finally the magnitude of the torque to be supplemented which is more in line with the actual torque is obtained.
It should be noted that the above solution of the preferred embodiment is only one specific implementation solution proposed in the present application, and other methods for determining the magnitude of the torque to be supplemented belong to the protection scope of the present application.
To further determine whether the torque of the tower bolts is insufficient, in some embodiments, the method further comprises:
and when the difference value between the amplitude of the Fourier transform result and a preset standard amplitude is larger than a second preset threshold value, determining that the torque of the tower drum bolt is insufficient.
Specifically, after the collected sound waves are subjected to Fourier transform, the amplitude of the Fourier transform result can be directly subjected to quantization comparison, the amplitude of the Fourier transform result of the tower bolt with normal torque is obtained, a preset standard amplitude is obtained, then the difference value between the amplitude of the Fourier transform result to be detected and the preset standard amplitude is compared, and when the difference value is larger than a second preset threshold value, the second preset threshold value can be obtained through experiments, and it is determined that the torque of the tower bolt is insufficient. Therefore, whether the torque of the tower drum bolt is insufficient can be directly judged without calculating the torque of the tower drum bolt.
It should be noted that the solution of the above preferred embodiment is only one specific implementation solution proposed in the present application, and other methods for determining that the tower bolt torque is insufficient belong to the protection scope of the present application.
The invention discloses a method for monitoring a tower bolt of a wind generating set, which comprises the following steps: collecting sound waves generated when a tower bolt of a wind generating set is knocked; determining the actual torque of the tower bolt according to the sound wave; when the difference value of the actual torque and the preset standard torque is larger than a first preset threshold value, the torque of the tower cylinder bolt is determined to be insufficient, so that the accuracy and the efficiency of monitoring the tower cylinder bolt of the wind generating set are improved, the times of excessive maintenance of the tower cylinder bolt of the wind generating set are effectively reduced, the tower cylinder bolt of the generator set with insufficient torque is timely identified, and the serious wound of the wind generating set caused by factors such as overspeed, vibration and bolt breakage is avoided.
In order to further illustrate the technical idea of the present invention, in combination with a specific application scenario, as shown in fig. 2, a schematic flow chart of a monitoring method for a tower bolt of a wind turbine generator system according to another embodiment of the present invention is provided, and the method specifically includes the following steps:
s201, collecting sound waves generated when a tower bolt of the wind generating set is knocked.
In this step, the sound wave generated when the tower bolt of the wind turbine generator system is knocked is collected, optionally, the sound wave collecting device can be connected to the tower bolt of the wind turbine generator system, and then the tower bolt is knocked according to preset conditions to complete sound wave collection.
S202, carrying out Fourier transform on the sound waves to obtain Fourier transform results of the sound waves.
In the step, Fourier transform is carried out on the collected sound waves, so that the sound waves are changed from time variables to impact quantities, and Fourier transform results of the sound waves are obtained.
S203, judging whether the difference value of the amplitude of the Fourier transform result and a preset standard amplitude is larger than a second preset threshold value.
In this step, it is first determined whether a difference between an amplitude of the inner-leaf transform result and a preset standard amplitude is greater than a second preset threshold value, if so, S205 is executed, and if not, S204 is executed.
And S204, obtaining the actual torque of the tower cylinder bolt according to the amplitude of the Fourier transform result and the deep neural network of the tower cylinder bolt.
In the step, after the tower cylinder bolt torque is judged to be normal through the amplitude of the Fourier transform result, the actual torque of the tower cylinder bolt is further obtained through the amplitude of the Fourier transform result and a deep neural network of the tower cylinder bolt, and the judgment is carried out again according to the actual torque.
S205, determining that the tower cylinder bolt torque is insufficient.
In the step, the insufficient torque of the tower drum bolt is judged according to the amplitude of the Fourier transform result, the actual torque does not need to be calculated, and the monitoring efficiency of the tower drum bolt is improved.
And S206, judging whether the difference value of the actual moment and the preset standard moment is greater than a first preset threshold value.
In the step, after the torque of the tower drum bolt is judged to be normal through the amplitude of the Fourier transform result, whether the difference value between the actual torque and the preset standard torque is larger than the first preset threshold value or not is judged again, if yes, the step S208 is executed, and if not, the step S207 is executed, so that the accuracy of monitoring the tower drum bolt is further improved.
And S207, determining that the torque of the tower cylinder bolt is normal.
In the step, the torque of the tower drum bolt is determined to be normal through two times of judgment, and the monitoring accuracy is guaranteed.
And S208, determining that the tower cylinder bolt torque is insufficient.
In this step, after determining that the torque of the tower cylinder bolt is insufficient, the torque of the tower cylinder bolt is supplemented as required, optionally, the torque of the tower cylinder bolt can be automatically supplemented as required after receiving a signal that the torque of the tower cylinder bolt is insufficient through an intelligent device.
The invention discloses a method for monitoring a tower bolt of a wind generating set, which comprises the following steps: collecting sound waves generated when a tower bolt of a wind generating set is knocked, carrying out Fourier transform on the sound waves to obtain a Fourier transform result of the sound waves, judging whether the difference value between the amplitude value of the Fourier transform result and a preset standard amplitude value is larger than a second preset threshold value, if so, determining that the torque of the tower bolt is insufficient, if not, obtaining the actual torque of the tower bolt according to the amplitude value of the Fourier transform result and a deep neural network of the tower bolt, judging whether the difference value between the actual torque and the preset standard torque is larger than a first preset threshold value, if not, determining that the torque of the tower bolt is normal, if so, determining that the torque of the tower bolt is insufficient, further improving the monitoring accuracy and efficiency of the tower bolt of the wind generating set through two judgments, and effectively reducing the number of excessive maintenance of the tower bolt of the wind generating set, and timely identify the generator set tower bolt with insufficient torque.
Corresponding to the monitoring method for the tower bolt of the wind generating set in the embodiment of the present application, the embodiment of the present application further provides a monitoring device for the tower bolt of the wind generating set, as shown in fig. 3, the device includes:
the acquisition module 301 is used for acquiring sound waves generated when a tower bolt of the wind generating set is knocked;
a moment determining module 302, configured to determine an actual moment of the tower bolt according to the sound wave;
the first judgment module 303 determines that the torque of the tower bolt is insufficient when the difference between the actual torque and the preset standard torque is greater than a first preset threshold.
In a specific application scenario of the present application, the moment determining module is specifically configured to:
carrying out Fourier transform on the sound waves to obtain Fourier transform results of the sound waves;
obtaining the actual torque of the tower cylinder bolt according to the amplitude of the Fourier transform result and a deep neural network of the tower cylinder bolt;
the tower bolt deep neural network is obtained based on the moments of a large number of tower bolts and the sound waves.
In a specific application scenario of the present application, the apparatus further includes:
and when the torque of the tower drum bolt is determined to be insufficient, determining the magnitude of the torque to be supplemented according to the actual torque and the current environment temperature.
In a specific application scenario of the present application, the acquisition module is specifically configured to:
connecting a sound wave acquisition device to the tower bolt;
knocking a preset position of the tower cylinder bolt based on a preset frequency and a preset force;
and collecting sound waves generated when the tower bolt is knocked.
In a specific application scenario of the present application, the device further includes a second determining module, specifically configured to:
and when the difference value between the amplitude of the Fourier transform result and a preset standard amplitude is larger than a second preset threshold value, determining that the torque of the tower drum bolt is insufficient.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not necessarily depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A method for monitoring a tower bolt of a wind generating set is characterized by comprising the following steps:
collecting sound waves generated when a tower bolt of a wind generating set is knocked;
determining the actual torque of the tower bolt according to the sound wave;
and when the difference value of the actual moment and the preset standard moment is larger than a first preset threshold value, determining that the moment of the tower drum bolt is insufficient.
2. The method according to claim 1, characterized in that the actual moment of the tower bolt is determined from the sound waves, in particular:
carrying out Fourier transform on the sound waves to obtain Fourier transform results of the sound waves;
obtaining the actual torque of the tower cylinder bolt according to the amplitude of the Fourier transform result and a deep neural network of the tower cylinder bolt;
the tower bolt deep neural network is obtained based on the moments of a large number of tower bolts and the sound waves.
3. The method of claim 1, wherein the method further comprises:
and when the torque of the tower drum bolt is determined to be insufficient, determining the magnitude of the torque to be supplemented according to the actual torque and the current environment temperature.
4. The method according to claim 1, characterized in that the sound waves generated when the tower bolts of the wind turbine generator system are knocked are collected, in particular:
connecting a sound wave acquisition device to the tower bolt;
knocking a preset position of the tower cylinder bolt based on a preset frequency and a preset force;
and collecting sound waves generated when the tower bolt is knocked.
5. The method of claim 2, wherein the method further comprises:
and when the difference value between the amplitude of the Fourier transform result and a preset standard amplitude is larger than a second preset threshold value, determining that the torque of the tower drum bolt is insufficient.
6. A wind generating set tower section of thick bamboo bolt's monitoring facilities, its characterized in that, equipment includes:
the acquisition module is used for acquiring sound waves generated when a tower bolt of the wind generating set is knocked;
the moment determining module is used for determining the actual moment of the tower drum bolt according to the sound wave;
and the first judgment module is used for determining that the torque of the tower cylinder bolt is insufficient when the difference value between the actual torque and the preset standard torque is greater than a first preset threshold value.
7. The device of claim 6, wherein the moment determination module is specifically configured to:
carrying out Fourier transform on the sound waves to obtain Fourier transform results of the sound waves;
obtaining the actual torque of the tower cylinder bolt according to the amplitude of the Fourier transform result and a deep neural network of the tower cylinder bolt;
the tower bolt deep neural network is obtained based on the moments of a large number of tower bolts and the sound waves.
8. The apparatus of claim 6, wherein the apparatus further comprises:
and when the torque of the tower drum bolt is determined to be insufficient, determining the magnitude of the torque to be supplemented according to the actual torque and the current environment temperature.
9. The device of claim 6, wherein the acquisition module is specifically configured to:
connecting a sound wave acquisition device to the tower bolt;
knocking a preset position of the tower cylinder bolt based on a preset frequency and a preset force;
and collecting sound waves generated when the tower bolt is knocked.
10. The device according to claim 7, wherein the device further comprises a second determining module, specifically configured to:
and when the difference value between the amplitude of the Fourier transform result and a preset standard amplitude is larger than a second preset threshold value, determining that the torque of the tower drum bolt is insufficient.
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| CN202110258445.XA CN112943560A (en) | 2021-03-09 | 2021-03-09 | Method and equipment for monitoring tower bolt of wind generating set |
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| CN202110258445.XA CN112943560A (en) | 2021-03-09 | 2021-03-09 | Method and equipment for monitoring tower bolt of wind generating set |
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| CN112431724A (en) * | 2020-09-16 | 2021-03-02 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Method for preventing wind power tower from falling down based on time-sharing multiplexing controller |
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2021
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| CN110987275A (en) * | 2019-12-23 | 2020-04-10 | 山东中车风电有限公司 | On-line monitoring system for axial force of bolt in hub and wind generating set |
| CN112431724A (en) * | 2020-09-16 | 2021-03-02 | 中国大唐集团科学技术研究院有限公司火力发电技术研究院 | Method for preventing wind power tower from falling down based on time-sharing multiplexing controller |
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