CN113847945A - Health monitoring system and method for wind power tower barrel - Google Patents
Health monitoring system and method for wind power tower barrel Download PDFInfo
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Abstract
The invention relates to the technical field of wind power towers, and discloses a health monitoring system and a health monitoring method for a wind power tower, wherein the health monitoring system for the wind power tower comprises: the data acquisition device comprises a vibration acquisition submodule, a strain acquisition submodule, a steel strand prestress acquisition submodule and a deformation acquisition submodule; the data processing and control subsystem can control the data acquisition device to acquire data and can classify, screen and store the acquired data; the data acquisition and display subsystem can display the data acquired by the data acquisition device; the safety evaluation subsystem comprises a vibration evaluation module, a strain evaluation module, a prestress evaluation module, a deformation evaluation module and an early warning feedback module, and the early warning feedback module can send out early warning aiming at abnormal data evaluated by the corresponding modules. The health monitoring system for the wind power tower can monitor the overall quality of the wind power tower, can perform early warning when dangerous hidden dangers occur, and guarantees the reliable operation of a wind turbine generator.
Description
Technical Field
The invention relates to the technical field of wind power towers, in particular to a health monitoring system and method for a wind power tower.
Background
In recent years, with the rapid development of the wind power industry, the quality problem of the wind turbine generator is also paid attention to by people, and the collapse accident of the wind turbine generator caused by the quality problem of the tower barrel also happens occasionally, because the health condition of the tower barrel is influenced by various factors.
The wind power tower cylinder and the rotating mechanism not only bear the gravity of the unit, but also bear the lateral force generated by wind. In addition, because the mass of concrete tower section of thick bamboo is big, inertial force is big, and this is extremely unfavorable to the anti-seismic to wind-load can be along with the increment of tower section of thick bamboo height and grow, produces the side direction bending vibration easily when wind power tower section of thick bamboo structure receives power wind-load effect, and the reinforcing bar seam of tower section of thick bamboo section is not for not running through dry-type horizontal seam again, and the tensile bearing capacity of seam only relies on the tensile strength of grout that excels in, and this is difficult to resist the overturning moment of horizontal effects such as wind load, earthquake between the tower section of thick bamboo section. Therefore, after the concrete tower drum sections are placed, the tower drum sections are vertically spliced together through the post-tensioned prestressed steel strands. These have all become factors that affect the health of the tower, and challenge the monitoring of the health of the tower.
At present, although there is a monitoring system for a wind power tower cylinder in the prior art, the existing detection system can only monitor one or two signals, the monitoring data is not comprehensive enough, the monitoring of the complex health condition of the tower cylinder can not be realized far away, and a corresponding early warning system is lacked, so that the early warning can not be sent out in time aiming at the abnormal condition.
Disclosure of Invention
The invention aims to provide a health monitoring system for a wind power tower, which can monitor the overall quality of the wind power tower, can perform early warning when a dangerous hidden danger occurs, and ensures the reliable operation of a wind turbine generator.
In order to achieve the purpose, the invention adopts the following technical scheme:
a wind tower health monitoring system, comprising: the device comprises a data acquisition device, a data acquisition device and a data processing device, wherein the data acquisition device comprises a vibration acquisition submodule, a strain acquisition submodule, a steel strand prestress acquisition submodule and a deformation acquisition submodule, the vibration acquisition submodule is used for acquiring vibration data of a tower, the strain acquisition submodule is used for acquiring strain data of the tower, the steel strand prestress acquisition submodule is used for acquiring prestress data of a steel strand, and the deformation acquisition submodule is used for acquiring settlement and inclination data of the tower; the data processing and control subsystem can control the data acquisition device to acquire data, and can classify, screen and store the acquired data; a data acquisition and display subsystem capable of displaying data acquired by the data acquisition device; the safety evaluation subsystem comprises a vibration evaluation module, a strain evaluation module, a prestress evaluation module, a deformation evaluation module and an early warning feedback module, wherein the early warning feedback module can send out early warning aiming at abnormal data evaluated by the vibration evaluation module, the strain evaluation module, the prestress evaluation module and the deformation evaluation module.
As a preferable scheme of the health monitoring system for the wind power tower, the vibration acquisition submodule comprises a bidirectional acceleration sensor, and the bidirectional acceleration sensor is arranged along a tower body of the tower.
As a preferred scheme of the health monitoring system for the wind power tower, the strain acquisition submodule comprises a plurality of strain gauges which are uniformly arranged on the inner wall and the base position of the tower.
As a preferred scheme of the health monitoring system for the wind power tower, the steel strand prestress acquisition submodule comprises a magnetic flux sensor, and the magnetic flux sensor is mounted on a steel strand.
As a preferred scheme of the wind power tower cylinder health monitoring system, the deformation acquisition submodule comprises a static level gauge and an inclinometer, the static level gauge is installed on the basic part of the tower cylinder, and the inclinometer is installed on a cylinder body of the tower cylinder.
As a preferred scheme of the health monitoring system for the wind power tower, the early warning feedback module evaluates the data by comparing the acquired data with a preset data interval, and if the acquired data is located in the preset data interval, the evaluation data is normal data and no early warning is sent out; and if the analyzed data is not in the preset data interval, evaluating the data as abnormal data and sending out early warning.
As an optimal scheme of the health monitoring system for the wind power tower, if the evaluation data of the early warning feedback module is abnormal data, the early warning feedback module records the abnormal data into a monitoring log.
As a preferred scheme of the health monitoring system for the wind power tower, the data processing and control subsystem comprises four storage modules, and the four storage modules can respectively store data acquired by the vibration acquisition submodule, the strain acquisition submodule, the steel strand prestress acquisition submodule and the deformation acquisition submodule.
The invention also aims to provide a health monitoring method for the wind power tower, which can timely acquire the health condition of the wind power tower, reduce the possibility of danger of the wind power tower and is beneficial to ensuring the reliable operation of a wind turbine generator.
In order to achieve the purpose, the invention adopts the following technical scheme:
a health monitoring method for a wind power tower barrel adopts the health monitoring system for the wind power tower barrel provided by any technical scheme to monitor the health of the wind power tower barrel, and comprises the following steps:
the data processing and control subsystem controls the data acquisition device to start, and acquires data of vibration, strain, steel strand prestress and deformation of the tower;
the data processing and controlling subsystem carries out classified screening and classified storage on the data acquired by the data acquisition device;
the data acquisition and display subsystem receives the data acquired by the data acquisition device, displays the data after the data is displayed and set;
a vibration evaluation module, a strain evaluation module, a prestress evaluation module and a deformation evaluation module in the safety evaluation subsystem respectively perform safety evaluation on the vibration data, the strain data, the steel strand prestress data and the deformation data of the tower;
and if the vibration data, the strain data, the steel strand prestress data or the deformation data are evaluated as abnormal data, the safety evaluation subsystem sends out early warning aiming at the abnormal data.
As a preferred scheme of the health monitoring method for the wind power tower, the safety evaluation subsystem records the abnormal data into a monitoring log.
The invention has the beneficial effects that:
the invention provides a health monitoring system for a wind power tower, which comprises a data acquisition device, a data processing and control subsystem, a data acquisition and display subsystem and a safety evaluation subsystem, wherein an acquisition submodule, a strain acquisition submodule, a steel strand prestress acquisition submodule and a deformation acquisition submodule in the data acquisition device can respectively acquire vibration data, strain data and prestress data and settlement and inclination data of a tower, and the data processing and control subsystem can control the data acquisition device to acquire data and store the acquired data, so that the data can be conveniently analyzed and processed subsequently. The data acquisition and display subsystem can process the data acquired by the data acquisition device, so that various data can be displayed on the display screen in a distinguished manner, and an operator can know the data state in time. The vibration evaluation module, the strain evaluation module, the prestress evaluation module and the deformation evaluation module in the safety evaluation subsystem can process corresponding data, and the early warning feedback module can perform safety evaluation on the processed data and send out early warning on abnormal data.
The health monitoring method of the wind power tower barrel can acquire the health condition of the wind power tower barrel in time, reduce the possibility of danger of the wind power tower barrel and is beneficial to ensuring the reliable operation of a wind turbine generator.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention 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 for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a hardware schematic diagram of a health monitoring system for a wind turbine tower according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a sensor arrangement inside a wind tower provided in an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating an arrangement of steel strands of a wind tower according to an embodiment of the present invention;
FIG. 4 is a schematic view of a magnetic flux sensor arrangement in a wind tower provided in accordance with an embodiment of the present invention;
FIG. 5 is a schematic flow chart illustrating data acquisition of a health monitoring system for a wind turbine tower according to an embodiment of the present invention;
FIG. 6 is a schematic flow chart of a data processing and control subsystem of a wind turbine tower health monitoring system according to an embodiment of the present invention;
FIG. 7 is a schematic flow chart of a data acquisition and display subsystem of a wind tower health monitoring system according to an embodiment of the present invention;
FIG. 8 is a schematic flow chart of a safety assessment subsystem of a wind turbine tower health monitoring system according to an embodiment of the present invention;
fig. 9 is a schematic flow chart of a health monitoring method for a wind turbine tower according to an embodiment of the present invention.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all 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 invention.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, removably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first feature is directly connected to the second feature, or that the first feature is not directly connected to the second feature but is connected to the second feature via another feature. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
The technical scheme of the health monitoring system and the health monitoring method for the wind power tower provided by the invention is further described by the specific implementation mode in combination with the attached drawings.
The embodiment provides a wind power tower cylinder health monitoring system, and this wind power tower cylinder health monitoring system includes data acquisition device, data processing and control subsystem, data acquisition and display subsystem and safety assessment subsystem, and data acquisition device can monitor the vibration condition, the condition of meeting an emergency, the prestressing force condition and the subsidence and the slope condition of steel strand wires of a tower section of thick bamboo and generate corresponding data signal. The data processing and control subsystem can control the data acquisition device to collect data, and the data processing and control subsystem can also classify, screen and store the data of gathering, is convenient for follow-up analysis and processing to data. The data acquisition and display subsystem can display the data acquired by the data acquisition device on the display screen in a manner of distinguishing the data to some extent, so that an operator can know the data state in time. The safety evaluation subsystem can process vibration data, strain data, prestress data and settlement and inclination data of the steel strand, and sends out early warning on abnormal data after safety evaluation is carried out on the data.
This wind power tower section of thick bamboo health monitoring system can carry out data acquisition to wind power tower section of thick bamboo's vibration condition, the condition of meeting an emergency, steel strand wires's prestressing force condition and the condition of subsiding and inclining to store and show the data of gathering, can also handle and safe evaluation the data of gathering, and in time send the early warning to unusual data, remind operating personnel and fortune dimension personnel to find the problem, help promoting the whole life of a tower section of thick bamboo, guaranteed wind turbine generator system's reliable operation.
In this embodiment, as shown in fig. 1, the data acquisition device includes a vibration acquisition submodule, a strain acquisition submodule, a steel strand prestress acquisition submodule and a deformation acquisition submodule, the vibration acquisition submodule is used for acquiring vibration data of a tower, the strain acquisition submodule is used for acquiring strain data of the tower, the steel strand prestress acquisition submodule is used for acquiring prestress data of the steel strand, and the deformation acquisition submodule is used for acquiring settlement and inclination data of the tower. Preferably, the data acquisition device further comprises an RS-485 concentrator, an RS-485 bus and a data acquisition center server, wherein the vibration acquisition submodule, the strain acquisition submodule, the steel strand prestress acquisition submodule and the deformation acquisition submodule are connected with the data acquisition center server through the RS-485 bus and the RS-485 concentrator, so that the vibration data, the strain data, the prestress data of the steel strand and the settlement and inclination data are acquired.
Specifically, the vibration acquisition submodule comprises a bidirectional acceleration sensor, the bidirectional acceleration sensor is arranged along a tower body of the tower barrel, and the bidirectional acceleration sensor is used for acquiring integral vibration data of the tower barrel.
In this embodiment, the strain acquisition submodule includes a vibrating wire strain gauge, and the vibrating wire strain gauge is installed on the inner wall and the basic position of the tower cylinder and is used for acquiring strain (stress) data of the inner wall and the basic position of the tower cylinder. If the inner wall of the tower barrel has the defects of cracks, chipping and the like, the local stress of the tower barrel can change, the vibrating wire strain gauge can monitor the stress change, abnormal stress change data can be respectively transmitted to the safety evaluation subsystem through the data processing and controlling subsystem, and if the data is evaluated to be abnormal data, the safety evaluation subsystem can feed back early warning information to a user side.
Preferably, a plurality of vibrating wire strain gauges are uniformly distributed on the inner wall and the base position of the tower, as shown in DAD-A1, DAD-B1 and DAD-C1 in FIG. 2, 4 vibrating wire strain gauges in total are uniformly distributed in the designated position area of each barrel section of the barrel section A, the barrel section B and the barrel section C of the tower, and are used for collecting the change of the stress of the inner wall of the tower. If when the inner wall of the tower barrel has the defects of cracks, chipping and the like, the local stress of the tower barrel can change, and the vibrating wire strain gauge can acquire the stress change and transmit data.
28 vibrating wire type strainometers are arranged on the foundation position of the tower drum in total and used for acquiring the stress of the steel bars at the position, with larger stress, of the foundation position of the tower drum, and the vibrating wire type strainometers can acquire the stress conditions and transmit data. It can be understood that, in order to facilitate the arrangement of the vibrating wire strain gauge, before the tower drum foundation is poured, the vibrating wire strain gauge needs to be pre-embedded in advance at a specified position of the foundation to monitor the stress (strain) conditions of radial ribs, annular rib positions and inner longitudinal ribs at the position of the foundation with larger stress.
In this embodiment, the steel strand prestress collection submodule includes a magnetic flux sensor, and the magnetic flux sensor is installed on the steel strand and is used for collecting prestress of the steel strand in the tower. When the magnetic flux sensor monitors that the prestress value of the steel strand is insufficient, early warning information is sent to a user side in time through the safety evaluation subsystem, operation and maintenance personnel and engineering personnel can make a scheme to stretch the steel strand, the steel strand is guaranteed to have sufficient prestress, and the integral stability of the tower barrel is guaranteed.
It should be noted that, if conditions allow, a magnetic flux sensor is installed on each steel strand, so that prestress in all the steel strands in the tower can be collected. As shown in figure 3, because the steel strand is arranged in the tower, the magnetic flux sensors are arranged on the steel strand and need to be arranged when the steel strand is manufactured, and then the prestress value of the steel strand can be accurately measured after calibration is completed, the overall arrangement condition of the plurality of magnetic flux sensors in the tower is shown in figure 4, and Mfs-b-1, Mfs-b-2, Mfs-b-3, Mfs-b-4, Mfs-b-5 and Mfs-b-6 represent a part of the magnetic flux sensors penetrating from the top of the tower to the steel strand at the bottom of the tower.
Specifically, the deformation acquisition submodule comprises a static level gauge and an inclinometer, wherein the static level gauge is mounted at the basic part of the tower cylinder and used for measuring the settlement of the basic part of the tower cylinder; the inclinometer is installed on the cylinder body of the tower cylinder and used for measuring the inclination deformation of the cylinder body of the tower cylinder, and it can be understood that the inclination deformation of the cylinder body and the settlement amount of the base part of the tower cylinder are used as indexes for measuring the deformation of the tower cylinder in the embodiment. Preferably, 2 hydrostatic levels are symmetrically arranged in the designated position area of the base part of the tower and are used for acquiring the data of the settlement amount of the base part of the tower. Because the concrete tower drum is the period most prone to tower footing settlement at the initial stage of hoisting completion, the settlement change at the initial stage of the tower drum foundation is mainly monitored under the influence of other external conditions such as earthquake and the like, and when the settlement exceeds the reasonable settlement, the abnormal data collected by the hydrostatic level can be screened out by the safety evaluation subsystem and early warning information is sent out.
Specifically, as shown in DAD-TD3 in FIG. 2, the inclinometer is disposed at a designated location on the upper portion of the inner wall of the TD3 barrel section of the tower. Furthermore, the inclinometer is arranged on the main wind side of the designated position, the inclination angle of the inclined deformation is the largest, and the inclinometer can measure the largest inclination angle of the tower barrel conveniently.
In this embodiment, as shown in fig. 1, the wind power tower health monitoring system further includes a communication server and a network server, and the network server is connected between the communication server and the data acquisition center server, so that data acquired by the data acquisition center server is transmitted to the communication server, and then transmitted to other subsystems by the communication server.
Furthermore, the wind power tower barrel health monitoring system also comprises a computer monitoring center and an early warning device, wherein the computer monitoring center is used as an office place for operators and operation and maintenance personnel, so that the operators and the operation and maintenance personnel can master data information acquired by the wind power tower barrel health monitoring system in time; the early warning device can send out information such as sound, light and remind operating personnel and fortune dimension personnel that the abnormal conditions appears.
Preferably, the health monitoring system for the wind power tower further comprises a UPS power supply system, a lightning protection system and a constant temperature system, wherein the UPS power supply system, the lightning protection system and the constant temperature system are all connected with the data acquisition device, and can respectively provide uninterrupted electric energy, lightning protection and proper working temperature for the data acquisition device, so that the normal work of the data acquisition device is guaranteed.
In this embodiment, the data processing and control subsystem can control the data acquisition device to acquire data, and realize the start or stop of data acquisition, and the data processing and control subsystem can classify, screen and store the data of gathering simultaneously. Specifically, the data processing and control subsystem comprises four storage modules, the four storage modules can store data collected by the vibration collection submodule, the strain collection submodule, the steel strand prestress collection submodule and the deformation collection submodule respectively, and the data processing and control subsystem classifies and screens the data collected by the data collection device and stores the data in a classified manner, so that the data of a certain type can be called when the data are analyzed subsequently.
As shown in fig. 5, when the wind power tower health monitoring system works, the data acquisition device is started, the vibration of the tower, the strain (stress) of the tower, the steel strand prestress and the deformation data of the tower are acquired in a parallel acquisition mode, then the acquired data are classified, screened and stored through the data processing and control subsystem, and the data acquired by the data acquisition device are displayed through the data acquisition and display subsystem.
Specifically, a flow chart of the data processing and control subsystem is shown in fig. 6, the data acquisition and transmission module transmits the data to the data classification and screening module, and the screened data enters the storage module and is finally stored in the data storage server on one hand, and enters the user side interface and the display module on the other hand for display. It can be understood that the safety assessment subsystem can call the data in the storage server and display the data in the user side interface and the display module, and the data acquisition and control module can control the data acquisition and transmission module to transmit the data.
The flow chart of the data acquisition and display subsystem is shown in fig. 7, and the data content acquired by the sensor can be displayed through a time domain, a frequency domain and an early warning line after being set by display. It should be noted that the time domain includes a reasonable settling amount variation interval, a reasonable stress (strain) range of the inner wall of the tower, a reasonable steel strand prestress stress interval, a reasonable inclination angle interval of the inclinometer, and a frequency domain mainly is a reasonable vibration frequency interval acquired by the bidirectional acceleration sensor, and the precaution line mainly refers to data output when the reasonable interval range of the corresponding monitoring index is exceeded. In addition, in order to distinguish different monitoring indexes, the colors of the curves displayed by different monitoring indexes are different.
In this embodiment, the safety evaluation subsystem includes a vibration evaluation module, a strain evaluation module, a prestress evaluation module, a deformation evaluation module and an early warning feedback module, the vibration evaluation module, the strain evaluation module, the prestress evaluation module and the deformation evaluation module can respectively perform safety evaluation on data acquired by the vibration acquisition submodule, the strain acquisition submodule, the steel strand prestress acquisition submodule and the deformation acquisition submodule, and the early warning feedback module can send out an early warning for the data which is evaluated to be abnormal.
Specifically, the evaluation of the data by the early warning feedback module is to compare the acquired data with a preset data interval, and if the acquired data is located in the preset data interval, the evaluation data is normal data and no early warning is sent out; and if the acquired data is not in the preset data interval, evaluating the data as abnormal data and sending out early warning. As shown in fig. 8, the early warning feedback module can directly send the early warning information to the user control end through the network, can also send the early warning information to the user end through the mail early warning, and sends out information such as sound and light through the early warning device to remind the operator and the operation and maintenance staff to check the early warning information in time.
Meanwhile, the early warning feedback module can collect and feed back the evaluated abnormal data, so that a user can conveniently check and analyze the abnormal data, and the abnormal data can be recorded into a monitoring log to serve as an important reference basis for comprehensive evaluation and analysis of the health condition of the tower drum by operation and maintenance personnel and corresponding engineering personnel.
The embodiment also provides a health monitoring method for a wind power tower, which monitors the health condition of the wind power tower by using the health monitoring system for a wind power tower provided by the technical scheme, and as shown in fig. 9, the health monitoring method for a wind power tower comprises the following steps:
the data processing and control subsystem controls the data acquisition device to start, and acquires the data of vibration, strain, steel strand prestress and deformation of the tower.
The data processing and controlling subsystem carries out classified screening and classified storage on the data collected by the data collecting device.
The data acquisition and display subsystem receives the data acquired by the data acquisition device, displays the data after the data is displayed and set.
And a vibration evaluation module, a strain evaluation module, a prestress evaluation module and a deformation evaluation module in the safety evaluation subsystem respectively perform safety evaluation on the vibration data, the strain data, the steel strand prestress data and the deformation data of the tower.
And if the vibration data, the strain data, the steel strand prestress data or the deformation data are evaluated as abnormal data, the safety evaluation subsystem sends out early warning aiming at the abnormal data.
And the safety evaluation subsystem collects and feeds back the abnormal data and records the abnormal data into a monitoring log.
The health monitoring method for the wind power tower drum provided by the embodiment can timely acquire the health condition of the wind power tower drum, reduces the possibility of danger of the wind power tower drum, and is beneficial to ensuring the reliable operation of the wind turbine generator.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, adaptations and substitutions will occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A wind power tower health monitoring system, comprising:
the device comprises a data acquisition device, a data acquisition device and a data processing device, wherein the data acquisition device comprises a vibration acquisition submodule, a strain acquisition submodule, a steel strand prestress acquisition submodule and a deformation acquisition submodule, the vibration acquisition submodule is used for acquiring vibration data of a tower, the strain acquisition submodule is used for acquiring strain data of the tower, the steel strand prestress acquisition submodule is used for acquiring prestress data of a steel strand, and the deformation acquisition submodule is used for acquiring settlement and inclination data of the tower;
the data processing and control subsystem can control the data acquisition device to acquire data, and can classify, screen and store the acquired data;
a data acquisition and display subsystem capable of displaying data acquired by the data acquisition device;
the safety evaluation subsystem comprises a vibration evaluation module, a strain evaluation module, a prestress evaluation module, a deformation evaluation module and an early warning feedback module, wherein the early warning feedback module can send out early warning aiming at abnormal data evaluated by the vibration evaluation module, the strain evaluation module, the prestress evaluation module and the deformation evaluation module.
2. The wind tower health monitoring system of claim 1, wherein the vibration acquisition submodule includes a bi-directional acceleration sensor disposed along a tower body of the tower.
3. The wind tower health monitoring system of claim 1, wherein the strain acquisition submodule includes a plurality of strain gauges uniformly disposed on an inner wall and a base position of the tower.
4. The wind tower health monitoring system of claim 1, wherein the steel strand prestress collection submodule includes a magnetic flux sensor mounted on a steel strand.
5. The wind tower health monitoring system of claim 1, wherein the deformation acquisition submodule comprises a hydrostatic level gauge and an inclinometer, the hydrostatic level gauge is mounted on a base portion of the tower, and the inclinometer is mounted on a barrel of the tower.
6. The wind power tower health monitoring system according to claim 1, wherein the early warning feedback module evaluates the data by comparing the collected data with a preset data interval, and if the collected data is located in the preset data interval, the evaluation data is normal data and no early warning is given; and if the analyzed data is not in the preset data interval, evaluating the data as abnormal data and sending out early warning.
7. The wind tower health monitoring system of claim 6, wherein if the early warning feedback module evaluates that the data is abnormal data, the early warning feedback module records the abnormal data into a monitoring log.
8. The wind tower health monitoring system of claim 1, wherein the data processing and control subsystem comprises four storage modules, and the four storage modules are capable of respectively storing data collected by the vibration collection submodule, the strain collection submodule, the steel strand prestress collection submodule, and the deformation collection submodule.
9. A wind tower health monitoring method, characterized in that the health of a wind tower is monitored by the wind tower health monitoring system according to any one of claims 1 to 8, comprising the following steps:
the data processing and control subsystem controls the data acquisition device to start, and acquires data of vibration, strain, steel strand prestress and deformation of the tower;
the data processing and controlling subsystem carries out classified screening and classified storage on the data acquired by the data acquisition device;
the data acquisition and display subsystem receives the data acquired by the data acquisition device, displays the data after the data is displayed and set;
a vibration evaluation module, a strain evaluation module, a prestress evaluation module and a deformation evaluation module in the safety evaluation subsystem respectively perform safety evaluation on the vibration data, the strain data, the steel strand prestress data and the deformation data of the tower;
and if the vibration data, the strain data, the steel strand prestress data or the deformation data are evaluated as abnormal data, the safety evaluation subsystem sends out early warning aiming at the abnormal data.
10. The wind tower health monitoring method of claim 9, wherein the safety assessment subsystem records the anomaly data into a monitoring log.
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| CN202111097953.0A CN113847945A (en) | 2021-09-18 | 2021-09-18 | Health monitoring system and method for wind power tower barrel |
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