CN114018219A - Transmission tower vibration monitoring method, device, equipment and storage medium - Google Patents
Transmission tower vibration monitoring method, device, equipment and storage medium Download PDFInfo
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Abstract
The invention relates to the technical field of power transmission line monitoring, in particular to a method, a device, equipment and a storage medium for monitoring vibration of a power transmission tower. The method comprises the steps of acquiring vibration monitoring data of the transmission tower sent by a vibration monitoring terminal in real time; extracting vibration characteristic parameters of the vibration monitoring data to obtain a vibration acceleration vector; substituting the vibration acceleration vector into a preset three-dimensional coordinate system, and calculating to obtain acceleration components of the vibration acceleration vector in three coordinate axis directions of the three-dimensional coordinate system; calculating to obtain the inclination angle of the transmission tower according to the acceleration components in the three coordinate axis directions of the three-dimensional coordinate system; comparing the inclination angle obtained by calculation with a preset inclination angle threshold value, and judging a first vibration risk coefficient of the transmission tower; and sending the first vibration danger coefficient to the maintenance mobile terminal. The invention can carry out real-time and efficient vibration monitoring analysis on the transmission tower and accurately judge the vibration degree of the transmission tower.
Description
Technical Field
The invention relates to the technical field of power transmission line monitoring, in particular to a method, a device, equipment and a storage medium for monitoring vibration of a power transmission tower.
Background
The transmission tower is an important facility of the transmission line, and long-distance transmission of the high-voltage transmission line is realized by erecting corresponding transmission towers. After the transmission tower is erected, the transmission tower can bear various static loads such as tension gravity of a ground wire, gravity of an insulator string hardware fitting, self weight of a tower body and the like, and can bear dynamic loads such as wind and rain, earth pulsation and even earthquake and the like. Therefore, the vibration monitoring and inspection of the transmission tower are very important.
At present, the monitoring to transmission tower mainly still relies on the regular inspection completion of line inspection personnel, but inspection personnel's inspection can't accomplish real-time monitoring, and the fine vibration change of shaft tower is hardly perceived to the line inspection personnel, leads to high efficiency, accuracy inadequately to transmission tower's vibration monitoring. With the development of the internet of things technology, the on-line automatic monitoring of the transmission tower becomes possible, but no effective on-line vibration monitoring and analyzing technical means of the transmission tower is formed at present.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a transmission tower vibration monitoring method, a transmission tower vibration monitoring device, transmission tower vibration monitoring equipment and a storage medium.
In a first aspect, the present invention provides a method for monitoring vibration of a transmission tower, including:
acquiring vibration monitoring data of the transmission tower sent by a vibration monitoring terminal in real time;
extracting vibration characteristic parameters of the vibration monitoring data to obtain a vibration acceleration vector;
substituting the vibration acceleration vector into a preset three-dimensional coordinate system, and calculating to obtain acceleration components of the vibration acceleration vector in three coordinate axis directions of the three-dimensional coordinate system;
calculating to obtain the inclination angle of the transmission tower according to the acceleration components in the three coordinate axis directions of the three-dimensional coordinate system;
comparing the inclination angle obtained by calculation with a preset inclination angle threshold value, and judging a first vibration risk coefficient of the transmission tower;
and sending the first vibration risk coefficient of the transmission tower to the maintenance mobile terminal.
Based on the content of the invention, vibration characteristic parameters are extracted from vibration monitoring data acquired by a vibration monitoring terminal in real time to obtain a vibration acceleration vector, then corresponding calculation analysis processing is carried out on the vibration acceleration vector to obtain the inclination angle of the transmission tower, whether the transmission tower vibrates excessively or not is judged according to the inclination angle, corresponding risks exist, and corresponding vibration danger coefficients are sent to a maintenance mobile terminal for monitoring personnel to visually check and judge the risks so as to take corresponding countermeasures. The method can be used for carrying out real-time and efficient vibration monitoring and analysis on the transmission tower, accurately judging the vibration degree of the transmission tower, facilitating the judgment of vibration danger of monitoring personnel and effectively saving manpower.
In one possible design, the method further includes:
judging the stress strength of the transmission tower according to the vibration acceleration vector;
comparing the stress intensity with a preset typical stress situation map, and judging a second vibration risk coefficient of the transmission tower;
and sending the second vibration risk coefficient of the transmission tower to the maintenance mobile terminal.
Based on the content of the invention, the stress strength of the transmission tower is judged by analyzing the vibration acceleration vector, the stress strength of the transmission tower is compared with corresponding reference information, a second vibration risk coefficient is obtained and sent to the maintenance mobile terminal, so that the vibration degree of the transmission tower is accurately judged on the other hand, a monitoring person can conveniently judge the vibration risk, and corresponding countermeasures are made.
In one possible design, the method further includes:
judging a third vibration risk coefficient of the power transmission line according to the inclination angle and the stress strength of each power transmission tower under the same power transmission line at the same time point;
and sending the third vibration danger coefficient to the maintenance mobile terminal.
Based on the content of the invention, the third vibration danger coefficient of the power transmission line is judged and sent to the maintenance mobile terminal by processing and analyzing the inclination angle and the stress strength of each power transmission tower of the whole power transmission line at the same time, so that monitoring personnel can conveniently judge the vibration danger of the whole power transmission line, the vibration risk of the whole power transmission line can be timely and accurately found, and a response measure can be quickly made.
In one possible design, the calculating acceleration components of the vibration acceleration vector in directions of three coordinate axes of a three-dimensional coordinate system includes:
determining included angles between the vibration acceleration vector and three coordinate axes of a three-dimensional coordinate system respectively according to the direction of the vibration acceleration vector;
and respectively projecting the vibration acceleration vectors onto three coordinate axes of the three-dimensional coordinate system according to the included angles between the vibration acceleration vectors and the three coordinate axes of the three-dimensional coordinate system, so as to obtain the acceleration components of the vibration acceleration vectors in the directions of the three coordinate axes of the three-dimensional coordinate system.
In one possible design, the inclination angle of the transmission tower is obtained by calculation according to the acceleration components in the three coordinate axis directions of the three-dimensional coordinate system, and the calculation formula is as follows:
wherein, α is an inclination angle, and Ax, Ay and Az are acceleration components of the vibration acceleration vector in three coordinate axis directions of the three-dimensional coordinate system respectively.
In one possible design, the comparing the calculated tilt angle with a preset tilt angle threshold to determine a first risk coefficient of vibration of the power transmission tower includes:
when the inclination angle is larger than zero and smaller than the inclination angle threshold value, determining that the first vibration risk coefficient of the transmission tower is negative;
and when the inclination angle is larger than or equal to the inclination angle threshold value, judging that the first vibration risk coefficient of the transmission tower is positive.
In one possible design, the method further includes:
and when the calculated inclination angle reaches an alarm threshold value, sending alarm information to the maintenance mobile terminal, wherein the alarm threshold value is greater than the inclination angle threshold value.
In a second aspect, the present invention provides a transmission tower vibration monitoring device, including an obtaining unit, an extracting unit, a first calculating unit, a second calculating unit, a determining unit, and a transmitting unit, wherein:
the acquisition unit is used for acquiring vibration monitoring data of the transmission tower sent by the vibration monitoring terminal in real time;
the extraction unit is used for extracting vibration characteristic parameters of the vibration monitoring data to obtain a vibration acceleration vector;
the first calculation unit is used for substituting the vibration acceleration vector into a preset three-dimensional coordinate system and calculating to obtain acceleration components of the vibration acceleration vector in three coordinate axis directions of the three-dimensional coordinate system;
the second calculation unit is used for calculating and obtaining the inclination angle of the transmission tower according to the acceleration components in the three coordinate axis directions of the three-dimensional coordinate system;
the judging unit is used for comparing the calculated inclination angle with a preset inclination angle threshold value and judging a first vibration risk coefficient of the transmission tower;
and the sending unit is used for sending the first vibration risk coefficient of the transmission tower to the maintenance mobile terminal.
In a third aspect, the present invention provides a transmission tower vibration monitoring device, including:
a memory to store instructions;
a processor configured to read the instructions stored in the memory and execute the method of any of the first aspects according to the instructions.
In a fourth aspect, the present invention provides a computer-readable storage medium having stored thereon instructions which, when run on a computer, cause the computer to perform the method of any of the first aspects described above.
In a fifth aspect, the present invention provides a computer program product comprising instructions which, when run on a computer, cause the computer to perform the method of any of the first aspects above.
The invention has the beneficial effects that:
according to the method, the vibration characteristic parameters of the vibration monitoring data acquired by the vibration monitoring terminal in real time are extracted to obtain the vibration acceleration vector, then the vibration acceleration vector is correspondingly calculated, analyzed and processed to obtain the inclination angle of the transmission tower, whether the transmission tower vibrates excessively or not is judged according to the inclination angle, corresponding risks exist, and corresponding vibration danger coefficients are sent to the maintenance mobile terminal for monitoring personnel to visually check and judge the risks so as to take corresponding countermeasures. Through carrying out the analysis to the vibration acceleration vector, judge transmission tower's stress intensity, compare transmission tower's stress intensity and corresponding reference information, obtain second vibration danger coefficient and send to and maintain mobile terminal to from the accurate vibration degree who judges transmission tower of on the other hand, the monitoring personnel of being convenient for carry out vibration danger and judge, and formulate corresponding counter-measure. The third vibration danger coefficient of the power transmission line is judged and sent to the maintenance mobile terminal by processing and analyzing the inclination angle and the stress strength of each power transmission tower of the whole power transmission line at the same time, so that monitoring personnel can conveniently judge the vibration danger of the whole power transmission line, the vibration risk of the whole power transmission line can be timely and accurately found, and a countermeasure can be quickly responded. The method can be used for carrying out real-time and efficient vibration monitoring and analysis on the transmission tower, accurately judging the vibration degree of the transmission tower, facilitating the judgment of vibration danger of monitoring personnel and effectively saving manpower.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, 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 drawings without creative efforts.
FIG. 1 is a schematic diagram of the process steps of the present invention;
FIG. 2 is a diagram of a three-layer BP neural network architecture;
FIG. 3 is a schematic diagram of the acceleration component in the X-Y plane;
FIG. 4 is a schematic illustration of acceleration components in a three-dimensional coordinate space;
FIG. 5 is a schematic view of the apparatus of the present invention;
FIG. 6 is a schematic diagram of the apparatus of the present invention.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely illustrative of example embodiments of the invention. This invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.
It should be understood that the terms first, second, etc. are used merely for distinguishing between descriptions and are not intended to indicate or imply relative importance. Although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present invention.
In the following description, specific details are provided to facilitate a thorough understanding of example embodiments. However, it will be understood by those of ordinary skill in the art that the example embodiments may be practiced without these specific details. For example, systems may be shown in block diagrams in order not to obscure the examples in unnecessary detail. In other instances, well-known processes, structures and techniques may be shown without unnecessary detail in order to avoid obscuring example embodiments.
Example 1:
the embodiment provides a transmission tower vibration monitoring method, which can be applied to a corresponding transmission tower vibration monitoring system, wherein the system comprises a vibration monitoring terminal, a monitoring management platform and a maintenance mobile terminal, and as shown in fig. 1, the method comprises the following steps:
s101, vibration monitoring data of the transmission tower, sent by the vibration monitoring terminal, are obtained in real time.
During specific implementation, vibration monitoring data of the transmission tower are collected in real time through a vibration monitoring terminal installed on the transmission tower, and then the vibration monitoring data are remotely transmitted to a monitoring management platform in real time, so that the monitoring management platform can conveniently perform subsequent processing on the vibration monitoring data.
And S102, extracting vibration characteristic parameters of the vibration monitoring data to obtain a vibration acceleration vector.
During specific implementation, corresponding vibration characteristic parameter extraction is carried out on the vibration monitoring data through the monitoring and management platform to obtain a vibration acceleration vector of the transmission tower, so that subsequent vibration analysis processing is carried out by utilizing the vibration acceleration vector.
The vibration identification of the transmission tower can be generalized to a pattern identification problem, and the artificial neural network is very suitable for solving the problem. There are many types of artificial neural network models, and the current research on artificial neural network models mainly focuses on interconnection structures. Generally, an interconnect structure includes four types: hierarchical networks, hierarchical networks of intra-layer connections, hierarchical networks of feedback connections, and interconnection networks. The artificial neural network models are various, and the common models mainly include a perceptron model, an error back propagation neural network model (BP neural network), and the like.
The error of the previous layer is estimated by the error of the output layer by the error back propagation neural network (BP neural network), and the error of the previous layer is estimated according to the error, so that the purpose of obtaining the error estimation of each layer is achieved. The direction of error estimation is opposite to the transmission direction of the signal, so the error is called as an error back propagation neural network, and the structure of the BP neural network is shown in FIG. 2. And a three-layer BP neural network model can be selected to establish the relation between the vibration characteristic parameters and the vibration types. The most successful and most extensive mode identification combined in the artificial neural network is the BP neural network, and the BP neural network has the following characteristics:
non-linear mapping capability: error back-propagation neural networks essentially establish input-to-output mappings, and mathematical theory has demonstrated that three-layer BP neural networks can approximate any nonlinear continuous function with arbitrary accuracy.
Self-learning and self-adaptive capacity: the error back propagation neural network utilizes the actual output and the ideal output of the output layer to reversely deduce the error of the previous layer, automatically adjusts the weight and the threshold according to the error, and has the function of recording the weight and the threshold.
Fault tolerance capability: the error back propagation neural network does not have great influence on the global training result after a certain neuron or a certain number of neurons are damaged. Even if the system is locally damaged, the BP neural network can still complete the functions of identifying and classifying target data.
In order to verify the BP artificial neural network, determining a sample of the tower vibration characteristic parameter excited by wind under the condition of icing/no icing according to related reference documents, and determining a sample of the tower vibration characteristic parameter under the condition of external damage according to experiments; training an artificial neural network model by using the obtained sample based on MATLAB software to obtain a weight coefficient and a threshold coefficient of each layer of the model; and testing the artificial neural network model by using the test sample, and perfecting the weight coefficient and the threshold coefficient of each layer.
And S103, substituting the vibration acceleration vector into a preset three-dimensional coordinate system, and calculating to obtain acceleration components of the vibration acceleration vector in three coordinate axis directions of the three-dimensional coordinate system.
In specific implementation, a three-dimensional coordinate system preset by the monitoring management platform is a space three-dimensional coordinate system based on the transmission tower, and comprises an X axis, a Y axis and a Z axis, a vibration acceleration vector obtained by calculation is led into the three-dimensional coordinate system, and acceleration components of the vibration acceleration vector in the directions of three coordinate axes of the X axis, the Y axis and the Z axis of the three-dimensional coordinate system are obtained by calculation, and the process comprises the following steps: determining included angles between the vibration acceleration vector and three coordinate axes of a three-dimensional coordinate system respectively according to the direction of the vibration acceleration vector; and then respectively projecting the vibration acceleration vectors onto three coordinate axes of the three-dimensional coordinate system according to the included angles between the vibration acceleration vectors and the three coordinate axes of the three-dimensional coordinate system, so as to obtain the acceleration components of the vibration acceleration vectors in the directions of the three coordinate axes of the three-dimensional coordinate system.
And S104, calculating to obtain the inclination angle of the transmission tower according to the acceleration components in the three coordinate axis directions of the three-dimensional coordinate system.
In specific implementation, the calculation formula for calculating the inclination angle of the transmission tower is as follows:
wherein, α is an inclination angle, and Ax, Ay and Az are acceleration components of the vibration acceleration vector in three coordinate axis directions of the three-dimensional coordinate system respectively.
When the attitude of the transmission tower is changed due to vibration, the sensitive shaft of the corresponding acceleration sensor of the vibration monitoring terminal inclines for a certain angle along with the vibration monitoring terminal, the acceleration sensor can measure the acceleration values in three directions at the moment, and the acceleration sensor is subjected to the action of gravity when placed statically, so that the acceleration of gravity of 1g can be realized. By utilizing this property, the tilt angle of the acceleration sensor in the vertical plane can be calculated by measuring the components of the acceleration in the X axis and the Y axis, as shown in fig. 3, where Ax is g sina and Ay is g cosa
Thus, according to the above principle, a 2-axis acceleration sensor can measure the tilt angle in the X-Y plane. It should be noted that the 2-axis acceleration sensor can only measure the weight components in the X-axis and Y-axis, and thus only the tilt angle in the X-Y plane. However, when the transmission tower is inclined in space, the inclination is difficult to ensure to be completely on an X-Y plane, and the measurement only by using the 2-axis acceleration sensor has limitation, so that the 3-axis acceleration sensor can be used. As shown in fig. 4, the 3-axis acceleration sensor can measure the gravity components of the X-axis, the Y-axis and the Z-axis, and the formula for calculating the spatial inclination angle can be generalized as follows:
it should be noted that the property of the object that is subjected to gravity when the object is at rest is utilized, and if the object also has a motion acceleration, the formula is no longer accurate. A constraint must be added to the formula, namely:
the specific steps of directly utilizing the formula to calculate the inclination angle are as follows:
measuring acceleration components Ax, Ay and Az in three coordinate axis directions of a three-dimensional coordinate system;
calculating Ax2+Az2+Ay2If the sum of squares is close to 1g of squares, then the set of samples is valid and can be used for calculation, otherwise the samples are discarded;
the effective sampling value is utilized to calculate the inclination angle through mathematical calculation such as square-cut and arc tangent function
The result of each sampling calculation can be obtained by repeating the steps.
And S105, comparing the calculated inclination angle with a preset inclination angle threshold value, and judging a first vibration risk coefficient of the transmission tower.
In specific implementation, the process of comparing the calculated inclination angle with a preset inclination angle threshold value and judging the first vibration risk coefficient of the transmission tower comprises the following steps:
when the inclination angle is larger than zero and smaller than the inclination angle threshold value, determining that the first vibration risk coefficient of the transmission tower is negative; when the first vibration danger coefficient is negative, the vibration degree of the transmission tower is represented within a normal range, and the influence is not too large.
And when the inclination angle is larger than or equal to the inclination angle threshold value, judging that the first vibration risk coefficient of the transmission tower is positive. When the first vibration risk coefficient is positive, the vibration degree representing the transmission tower is large and is not in a normal range, and corresponding countermeasures need to be taken in time.
The calibration of the inclination angle threshold value needs to be combined with various attribute data, historical operation data and fault occurrence frequency of the output tower, and an expert analysis system is used for calibrating corresponding data, so that an accurate and reliable judgment reference basis is provided.
And S106, sending the first vibration danger coefficient of the transmission tower to the maintenance mobile terminal.
During specific implementation, the monitoring management platform sends the first vibration risk coefficient obtained by analysis, processing and judgment to the maintenance mobile terminal, so that corresponding monitoring personnel can visually see the first vibration risk coefficient through the maintenance mobile terminal, and then vibration degree judgment of the transmission tower is carried out, and corresponding measures are taken in time.
When the monitoring management platform judges that the calculated inclination angle reaches an alarm threshold value, the alarm threshold value is larger than the inclination angle threshold value, alarm information is sent to the maintenance mobile terminal, and the alarm information represents that the transmission tower is about to fall or has fallen/overturned so as to remind monitoring personnel to take emergency measures, reduce accident influence and reduce economic loss.
On the basis of the method for monitoring the vibration of the transmission tower, the embodiment further provides a method for monitoring the vibration of the transmission tower, which comprises the following steps:
and judging the stress strength of the transmission tower according to the vibration acceleration vector. The vibration acceleration vector can intuitively reflect the stress intensity of the transmission tower for generating vibration, and the vibration degree of the transmission tower can be judged on the other hand through processing and analyzing the stress intensity.
And comparing the stress intensity with a preset typical stress situation map, and judging a second vibration risk coefficient of the transmission tower. The calibration of the typical stress situation map needs to be carried out by combining various attribute data, historical operation data and fault occurrence frequency of the output tower and using an expert analysis system to calibrate corresponding data so as to provide an accurate and reliable judgment reference.
And sending the second vibration risk coefficient of the transmission tower to the maintenance mobile terminal. And the monitoring management platform sends the second vibration risk coefficient obtained by analysis, processing and judgment to the maintenance mobile terminal, so that corresponding monitoring personnel can visually see the second vibration risk coefficient through the maintenance mobile terminal, and then the vibration degree of the transmission tower is judged, and corresponding measures are taken in time.
On the basis of the transmission tower vibration monitoring method, the embodiment further provides a transmission tower vibration monitoring method, which includes: judging a third vibration risk coefficient of the power transmission line according to the inclination angle and the stress strength of each power transmission tower under the same power transmission line at the same time point; and sending the third vibration danger coefficient to the maintenance mobile terminal. The third vibration danger coefficient of the power transmission line is judged and sent to the maintenance mobile terminal by processing and analyzing the inclination angle and the stress strength of each power transmission tower of the whole power transmission line at the same time, so that monitoring personnel can conveniently judge the vibration danger of the whole power transmission line, the vibration risk of the whole power transmission line can be timely and accurately found, and a countermeasure can be quickly responded.
Example 2:
the present embodiment provides a transmission tower vibration monitoring device, as shown in fig. 5, including an obtaining unit, an extracting unit, a first calculating unit, a second calculating unit, a determining unit, and a sending unit, where:
the acquisition unit is used for acquiring vibration monitoring data of the transmission tower sent by the vibration monitoring terminal in real time;
the extraction unit is used for extracting vibration characteristic parameters of the vibration monitoring data to obtain a vibration acceleration vector;
the first calculation unit is used for substituting the vibration acceleration vector into a preset three-dimensional coordinate system and calculating to obtain acceleration components of the vibration acceleration vector in three coordinate axis directions of the three-dimensional coordinate system;
the second calculation unit is used for calculating and obtaining the inclination angle of the transmission tower according to the acceleration components in the three coordinate axis directions of the three-dimensional coordinate system;
the judging unit is used for comparing the calculated inclination angle with a preset inclination angle threshold value and judging a first vibration risk coefficient of the transmission tower;
and the sending unit is used for sending the first vibration risk coefficient of the transmission tower to the maintenance mobile terminal.
Example 3:
the embodiment provides a transmission tower vibration monitoring device, as shown in fig. 6, in a hardware layer, the transmission tower vibration monitoring device includes:
a memory to store instructions;
and the processor is used for reading the instruction stored in the memory and executing the transmission tower vibration monitoring method in the embodiment 1 according to the instruction.
Optionally, the computer device further comprises an internal bus and a communication interface. The processor, the memory, and the communication interface may be connected to each other via an internal bus, which may be an ISA (Industry Standard Architecture) bus, a PCI (Peripheral Component Interconnect) bus, an EISA (Extended Industry Standard Architecture) bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc.
The Memory may include, but is not limited to, a Random Access Memory (RAM), a Read Only Memory (ROM), a Flash Memory (Flash Memory), a First In First Out (FIFO), a First In Last Out (FILO), and/or the like. The Processor may be a general-purpose Processor including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but also Digital Signal Processors (DSPs), Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components.
Example 4:
the present embodiment provides a computer-readable storage medium having stored thereon instructions that, when executed on a computer, cause the computer to perform the transmission tower vibration monitoring method described in embodiment 1. The computer-readable storage medium refers to a carrier for storing data, and may include, but is not limited to, floppy disks, optical disks, hard disks, flash memories, flash disks and/or Memory sticks (Memory sticks), etc., and the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
Example 5:
the present embodiment provides a computer program product comprising instructions that, when run on a computer, cause the computer to perform the transmission tower vibration monitoring method described in embodiment 1. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable devices.
Finally, it should be noted that: the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A method for monitoring vibration of a transmission tower is characterized by comprising the following steps:
acquiring vibration monitoring data of the transmission tower sent by a vibration monitoring terminal in real time;
extracting vibration characteristic parameters of the vibration monitoring data to obtain a vibration acceleration vector;
substituting the vibration acceleration vector into a preset three-dimensional coordinate system, and calculating to obtain acceleration components of the vibration acceleration vector in three coordinate axis directions of the three-dimensional coordinate system;
calculating to obtain the inclination angle of the transmission tower according to the acceleration components in the three coordinate axis directions of the three-dimensional coordinate system;
comparing the inclination angle obtained by calculation with a preset inclination angle threshold value, and judging a first vibration risk coefficient of the transmission tower;
and sending the first vibration risk coefficient of the transmission tower to the maintenance mobile terminal.
2. The method for monitoring the vibration of the transmission tower according to claim 1, further comprising:
judging the stress strength of the transmission tower according to the vibration acceleration vector;
comparing the stress intensity with a preset typical stress situation map, and judging a second vibration risk coefficient of the transmission tower;
and sending the second vibration risk coefficient of the transmission tower to the maintenance mobile terminal.
3. The method for monitoring the vibration of the transmission tower according to claim 2, further comprising:
judging a third vibration risk coefficient of the power transmission line according to the inclination angle and the stress strength of each power transmission tower under the same power transmission line at the same time point;
and sending the third vibration danger coefficient to the maintenance mobile terminal.
4. The method for monitoring the vibration of the transmission tower according to claim 1, wherein the calculating of the acceleration component of the vibration acceleration vector in the directions of three coordinate axes of the three-dimensional coordinate system comprises:
determining included angles between the vibration acceleration vector and three coordinate axes of a three-dimensional coordinate system respectively according to the direction of the vibration acceleration vector;
and respectively projecting the vibration acceleration vectors onto three coordinate axes of the three-dimensional coordinate system according to the included angles between the vibration acceleration vectors and the three coordinate axes of the three-dimensional coordinate system, so as to obtain the acceleration components of the vibration acceleration vectors in the directions of the three coordinate axes of the three-dimensional coordinate system.
5. The method for monitoring the vibration of the transmission tower according to claim 1, wherein the inclination angle of the transmission tower is obtained by calculation according to acceleration components in three coordinate axis directions of a three-dimensional coordinate system, and the calculation formula is as follows:
wherein, α is an inclination angle, and Ax, Ay and Az are acceleration components of the vibration acceleration vector in three coordinate axis directions of the three-dimensional coordinate system respectively.
6. The method according to claim 1, wherein the step of comparing the calculated tilt angle with a preset tilt angle threshold to determine the first risk coefficient of vibration of the transmission tower comprises:
when the inclination angle is larger than zero and smaller than the inclination angle threshold value, determining that the first vibration risk coefficient of the transmission tower is negative;
and when the inclination angle is larger than or equal to the inclination angle threshold value, judging that the first vibration risk coefficient of the transmission tower is positive.
7. The method for monitoring the vibration of the transmission tower according to claim 1, further comprising:
and when the calculated inclination angle reaches an alarm threshold value, sending alarm information to the maintenance mobile terminal, wherein the alarm threshold value is greater than the inclination angle threshold value.
8. The utility model provides a transmission tower vibration monitoring devices, its characterized in that includes acquisition unit, extraction element, first computational element, second computational element, decision unit and sending unit, wherein:
the acquisition unit is used for acquiring vibration monitoring data of the transmission tower sent by the vibration monitoring terminal in real time;
the extraction unit is used for extracting vibration characteristic parameters of the vibration monitoring data to obtain a vibration acceleration vector;
the first calculation unit is used for substituting the vibration acceleration vector into a preset three-dimensional coordinate system and calculating to obtain acceleration components of the vibration acceleration vector in three coordinate axis directions of the three-dimensional coordinate system;
the second calculation unit is used for calculating and obtaining the inclination angle of the transmission tower according to the acceleration components in the three coordinate axis directions of the three-dimensional coordinate system;
the judging unit is used for comparing the calculated inclination angle with a preset inclination angle threshold value and judging a first vibration risk coefficient of the transmission tower;
and the sending unit is used for sending the first vibration risk coefficient of the transmission tower to the maintenance mobile terminal.
9. A transmission tower vibration monitoring device, comprising:
a memory to store instructions;
a processor for reading the instructions stored in the memory and executing the method of any one of claims 1-7 in accordance with the instructions.
10. A computer-readable storage medium having stored thereon instructions which, when executed on a computer, cause the computer to perform the method of any one of claims 1-7.
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| CN202111308753.5A Pending CN114018219A (en) | 2021-11-05 | 2021-11-05 | Transmission tower vibration monitoring method, device, equipment and storage medium |
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