Power transmission line operation state evaluation method and device based on video aeolian vibration

Abstract

The invention provides a power transmission line operation state evaluation method and device based on video aeolian vibration, and belongs to the field of power transmission lines. The method comprises the following steps: obtaining tower parameters of a target power transmission line, and video data and meteorological data in a target time period; determining a span image of each section of span of the target power transmission line in each frame of image of the video data according to the video data; according to the span image and the meteorological data, determining vibration characteristics of aeolian vibration of a wire corresponding to each span in the target power transmission line; and determining the operation state of the target power transmission line according to the vibration characteristics of the lead corresponding to each span, the tower parameters corresponding to each span and the meteorological data. According to the method, the operation state of the power transmission line can be accurately evaluated based on the aeolian vibration, the influence of the aeolian vibration on the operation of the power transmission line is accurately determined, and the operation state of the power transmission line is accurately evaluated.

Description

Technical Field

[0001] The present invention relates to the technical field of power transmission lines, and in particular to a method and device for evaluating the operating status of a power transmission line based on video breeze vibration. Background Art

[0002] As the demand for electricity continues to grow, the requirements for power supply reliability and stability are also getting higher and higher. Transmission lines are an important part of the power system, and evaluating the operating status of transmission lines is very important for ensuring power supply reliability and stability.

[0003] Breeze vibration often occurs on transmission lines. Once it occurs, the synchronization effect will cause the vibration to continue, and the cumulative effect of long-term breeze vibration will cause fatigue breakage of the transmission line, or even wire breakage. Therefore, breeze vibration is also very important for the safe and reliable operation of transmission lines.

[0004] The inventors have discovered that the evaluation of the operating status of a transmission line in the related art is mainly carried out by obtaining various parameters of the conductors in the transmission line, and performing a multi-faceted evaluation of the operating status of the transmission line based on the various parameters, without considering the breeze vibration of the transmission line, nor the impact of the breeze vibration on the operation of the transmission line, making it difficult to accurately evaluate the operating status of the transmission line under the condition of breeze vibration. Summary of the invention

[0005] The embodiment of the present invention provides a method and device for evaluating the operating status of a power transmission line based on video breeze vibration, so as to accurately evaluate the operating status of the power transmission line based on breeze vibration, accurately determine the impact of breeze vibration on the operation of the transmission line, and accurately evaluate the operating status of the transmission line.

[0006] In a first aspect, an embodiment of the present invention provides a method for evaluating the operating status of a power transmission line based on video breeze vibration, comprising:

[0007] Obtain the tower parameters of the target transmission line, as well as the video data and meteorological data within the target period;

[0008] Determine, according to the video data, a span image of each span of the target power transmission line in each frame of the video data;

[0009] Determine the vibration characteristics of breeze vibration of the conductor corresponding to each span in the target transmission line according to the span image and the meteorological data;

[0010] The operating state of the target transmission line is determined according to the vibration characteristics of the conductor corresponding to each span, the tower parameters corresponding to each span and the meteorological data.

[0011] In a possible implementation, determining the vibration characteristics of breeze vibration of the conductor corresponding to each span in the target transmission line according to the span image and the meteorological data includes:

[0012] Determining a position change area of ​​a conductor in the target transmission line according to the span image;

[0013] Determining whether the conductor corresponding to each span in the target transmission line moves according to the position change area;

[0014] If the conductor moves, it is determined whether the meteorological data satisfies the condition for breeze vibration;

[0015] If the meteorological data meets the condition for breeze vibration, the vibration characteristics of breeze vibration of the conductor corresponding to each span in the target transmission line are extracted according to the span image.

[0016] In a possible implementation, if the meteorological data meets the condition for breeze vibration, the vibration characteristics of breeze vibration of the conductor corresponding to each span in the target transmission line are extracted according to the span image, including:

[0017] If the meteorological data meets the condition for breeze vibration, the motion trajectory of the wire corresponding to each span is determined respectively according to all span images corresponding to the same span;

[0018] According to the motion trajectory of the conductor corresponding to each span, the vibration characteristics of the breeze vibration of the conductor corresponding to each span are determined.

[0019] In a possible implementation, if the meteorological data meets the condition for breeze vibration, the motion trajectory of the wire corresponding to each span is determined according to all span images corresponding to the same span, including:

[0020] If the meteorological data meets the condition for breeze vibration, then for each span, a background image of the span is determined based on all span images of the span;

[0021] According to the background image, all the span images of the span are differentiated to obtain the position of the conductor in each span image;

[0022] According to the time sequence of all the span images of the span section, the position of the conductor in each span image is arranged to form the motion trajectory of the conductor corresponding to the span section.

[0023] In a possible implementation, determining the vibration characteristics of breeze vibration of the wire corresponding to each span according to the motion trajectory of the wire corresponding to each span includes:

[0024] For each span, multiple key points of the conductor corresponding to the span are determined according to the tower parameters corresponding to the span;

[0025] According to the motion trajectory of the conductor corresponding to the span, the time series data corresponding to the motion trajectory of each key point is determined respectively;

[0026] According to the time series data, the vibration characteristics of each key point on the conductor corresponding to the span are determined respectively;

[0027] Based on the vibration characteristics of each key point, the vibration characteristics of the breeze vibration of the conductor corresponding to the span are obtained.

[0028] In a possible implementation, determining whether a conductor corresponding to each span in the target transmission line moves according to the position change area includes:

[0029] Determine whether the change height of the position change area is greater than a preset height;

[0030] If the change height of the position change area is greater than a preset height, it is determined that the conductor in the target power transmission line moves;

[0031] If the change height of the position change area is less than or equal to the preset height, it is determined that the conductor in the target power transmission line has not moved.

[0032] In a possible implementation, if the conductor moves, determining whether the meteorological data satisfies the condition for breeze vibration includes:

[0033] If the wire moves, determining whether the wind speed in the meteorological data is within a preset wind speed range;

[0034] If the wind speed is within the preset wind speed range, it is determined that the meteorological data meets the condition for breeze vibration to occur;

[0035] If the wind speed is not within the preset wind speed range, it is determined that the meteorological data does not meet the conditions for breeze vibration to occur.

[0036] In a possible implementation, determining the operating state of the target transmission line according to the vibration characteristics of the conductor corresponding to each span, the tower parameters corresponding to each span, and the meteorological data includes:

[0037] Inputting the vibration characteristics of the conductor corresponding to each span, the tower parameters corresponding to each span, and the meteorological data into a preset conductor evaluation model, and obtaining the operating status of the conductor corresponding to each span output by the conductor evaluation model; wherein the conductor evaluation model is determined according to different tower parameters, vibration characteristics, meteorological data, and corresponding operating status;

[0038] The operating state of the target transmission line is determined based on the operating state of the conductor corresponding to each span.

[0039] In a possible implementation, determining, according to the video data, a span image of each span of the target transmission line in each frame of the video data includes:

[0040] Processing the video data frame by frame to obtain multiple frames of images of the video data;

[0041] Determine the position of the tower in each frame of the image respectively;

[0042] According to two adjacent pole towers in each frame image, the area corresponding to each span is extracted to obtain a span image of each span of the target transmission line; wherein the area between two adjacent pole towers forms a span.

[0043] In a second aspect, an embodiment of the present invention provides a transmission line operation status assessment device based on video breeze vibration, comprising:

[0044] An acquisition module, used to acquire the tower parameters of the target transmission line, as well as the video data and meteorological data within the target period;

[0045] An image division module, used for determining, according to the video data, a span image of each span section of the target transmission line in each frame image of the video data;

[0046] A vibration extraction module, used to determine the vibration characteristics of breeze vibration of the conductor corresponding to each span in the target transmission line according to the span image and the meteorological data;

[0047] The evaluation module is used to determine the operating status of the target transmission line according to the vibration characteristics of the conductor corresponding to each span, the tower parameters corresponding to each span and the meteorological data.

[0048] Compared with the prior art, the embodiments of the present invention have the following beneficial effects:

[0049] The embodiment of the present invention obtains the pole tower parameters of the target transmission line, the video data and the meteorological data within the target time period, and through the video data, the span image of each span of the target transmission line in each frame of the video data can be determined, and the situation of each span in the target transmission line can be accurately obtained; through the span image and the meteorological data, the vibration characteristics of the breeze vibration of the conductor corresponding to each span in the target transmission line can be determined, and the breeze vibration situation of the target transmission line can be accurately obtained, so as to evaluate the operation of the target transmission line; finally, the operating state of the target transmission line is determined through the vibration characteristics of the conductor corresponding to each span, the pole tower parameters and the meteorological data corresponding to each span, and the operating state of the target transmission line can be judged through the breeze vibration of the conductor, and the influence of the breeze vibration on the target transmission line can be detected in time, so as to reduce the phenomenon of conductor wear and fatigue damage caused by breeze vibration. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0051] Figure 1 This is an application scenario diagram of a method for evaluating the operation status of a power transmission line based on video breeze vibration provided by an embodiment of the present invention;

[0052] Figure 2 is a flow chart of an implementation of a method for evaluating the operation status of a power transmission line based on video breeze vibration provided by an embodiment of the present invention;

[0053] Figure 3 is a flowchart for implementing the method of determining the vibration characteristics of breeze vibration provided by an embodiment of the present invention;

[0054] Figure 4 It is a structural schematic diagram of a transmission line operation status assessment device based on video breeze vibration provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0055] In the following description, specific details such as specific system structures, technologies, etc. are provided for the purpose of illustration rather than limitation, so as to provide a thorough understanding of the embodiments of the present invention. However, it should be clear to those skilled in the art that the present invention may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to prevent unnecessary details from obstructing the description of the present invention.

[0056] The inventors found that in order to evaluate the operating status of a transmission line, it is usually necessary to obtain various parameters of the conductors in the transmission line, and to perform a multi-faceted evaluation of the operating status of the transmission line through various parameters, without considering the breeze vibration of the transmission line, nor the influence of the breeze vibration on the operation of the transmission line, and it is difficult to accurately evaluate the operating status of the transmission line under the condition of breeze vibration. Therefore, it is necessary to consider a method for evaluating the operating status of a transmission line based on breeze vibration.

[0057] Based on the idea of ​​accurately evaluating the operating status of a transmission line based on breeze vibration, in an embodiment of the present invention, the vibration characteristics of the breeze vibration of the conductors in the transmission line are determined through the video data of the transmission line, and the breeze vibration conditions of the transmission line are accurately obtained; then the operating status of the transmission line is determined through the vibration characteristics, tower parameters and meteorological data, and the operating status of the transmission line can be judged through the breeze vibration of the conductors, and the influence of the breeze vibration on the operating status of the transmission line can be detected in time.

[0058] In order to make the purpose, technical solutions and advantages of the present invention more clear, specific embodiments will be described below in conjunction with the accompanying drawings.

[0059] Figure 1 This is an application scenario diagram of the method for evaluating the operation status of a power transmission line based on video breeze vibration provided by an embodiment of the present invention. Figure 1 As shown, the target transmission line includes multiple towers, and the conductors are suspended on the towers as overhead lines of the target transmission line. The horizontal distance between two adjacent towers forms a span, and the camera equipment can be set on the towers to shoot the target transmission line, so as to collect and obtain the video data of the target transmission line. The camera equipment can also be set on a building near the transmission line to shoot the target transmission line. The camera equipment can also be set on a drone to use the drone to obtain the video data of the target transmission line.

[0060] Figure 2 The implementation flow chart of the method for evaluating the operation status of a power transmission line based on video breeze vibration provided by an embodiment of the present invention is described in detail as follows:

[0061] Step S201, obtaining tower parameters of a target transmission line, as well as video data and meteorological data within a target period of time.

[0062] In this embodiment, the tower parameters of the target transmission line may include the position, height and type of each tower in the target transmission line. The video data may be the video data of the target transmission line obtained by photographing the target transmission line with a camera device installed on the tower, so as to determine whether the conductor of the target transmission line vibrates in a breeze by using the obtained video data.

[0063] Here, the meteorological data may include the temperature, humidity, wind direction and wind speed of the target transmission line during the target time period, and may also include rainfall and snowfall, etc.

[0064] Step S202: determining, based on the video data, a span image of each span of the target transmission line in each frame of the video data.

[0065] In this embodiment, when a camera device photographs a target transmission line, it may photograph two towers in the target transmission line, i.e., conductors corresponding to one span, or it may photograph multiple towers, i.e., conductors corresponding to multiple spans.

[0066] In order to accurately determine the vibration of the wire corresponding to each span, it is necessary to extract the image of the wire corresponding to each span respectively and then determine it. Therefore, the video data can be processed to extract the image corresponding to each span in each frame.

[0067] Optionally, to determine the span image of each span of the target transmission line in each frame of the video data based on the video data, the video data may be first processed frame by frame to obtain multiple frames of the video data; then, the positions of the pole towers in each frame are determined respectively; finally, based on two adjacent pole towers in each frame, the area corresponding to each span is extracted to obtain the span image of each span of the target transmission line; wherein the area between two adjacent pole towers forms a span.

[0068] In this embodiment, there is a lot of information in the video data. In order to accurately judge the vibration condition of the conductor in the target transmission line, it is necessary to determine it separately for each span. Therefore, the position of the tower in each frame image can be determined, and the corresponding area between the two towers, that is, the area corresponding to each span, can be found.

[0069] When determining the position of the pole tower in each frame of image, a target recognition algorithm or a target detection algorithm may be used to determine the position of the pole tower from each frame of image. In addition, the set camera device generally does not move, and the position of the pole tower in each frame of image may be determined in advance, and the predetermined position is corresponded to the currently acquired video data, thereby extracting the image area corresponding to each span.

[0070] Here, considering that breeze vibration has a high vibration frequency, the video data can be framed according to the frequency range of breeze vibration to ensure that the breeze vibration of the wire can be captured. For example, the frequency range of breeze vibration is generally 3Hz to 120Hz, and 1s in the video data can be divided into 240 frames of images, or 360 frames of images, etc. This is only an illustrative description and is not intended to be limiting.

[0071] Step S203, determining the vibration characteristics of breeze vibration of the conductor corresponding to each span in the target transmission line according to the span image and meteorological data.

[0072] In this embodiment, the span image and the meteorological image can be combined to make a comprehensive judgment on the conductors in the transmission line, and accurately extract the vibration characteristics of the breeze vibration of the conductors, so as to use the breeze vibration conditions to evaluate the operation of the target transmission line.

[0073] Here, the vibration characteristics may include the frequency and amplitude of the vibration, etc.

[0074] Step S204, determining the operating status of the target transmission line according to the vibration characteristics of the conductor corresponding to each span, the tower parameters corresponding to each span, and the meteorological data.

[0075] In this embodiment, different breeze vibration conditions will have different effects on the target transmission line. For example, a high-frequency breeze vibration has a greater impact on the target transmission line than a low-frequency breeze vibration, and a large-amplitude breeze vibration has a greater impact on the target transmission line than a small-amplitude breeze vibration. Therefore, the influence of the vibration characteristics on the operating state of the conductor is comprehensively considered through vibration characteristics, tower parameters and meteorological data, so as to obtain the operating state of the target transmission line.

[0076] Optionally, various power parameters of the conductors in the target transmission line can also be obtained, such as the material, quantity, diameter, resistance and transmitted voltage of the conductors. The operating status of the target transmission line is comprehensively determined through the above vibration characteristics, tower parameters, meteorological data and power parameters, so as to evaluate the operating status of the transmission line from multiple angles while considering the breeze vibration of the conductors.

[0077] The embodiment of the present invention obtains the pole tower parameters of the target transmission line, the video data and the meteorological data within the target time period, and through the video data, the span image of each span of the target transmission line in each frame of the video data can be determined, and the situation of each span in the target transmission line can be accurately obtained; through the span image and the meteorological data, the vibration characteristics of the breeze vibration of the conductor corresponding to each span in the target transmission line can be determined, and the breeze vibration situation of the target transmission line can be accurately obtained, so as to evaluate the operation of the target transmission line; finally, the operating state of the target transmission line is determined through the vibration characteristics of the conductor corresponding to each span, the pole tower parameters and the meteorological data corresponding to each span, and the operating state of the target transmission line can be judged through the breeze vibration of the conductor, and the influence of the breeze vibration on the target transmission line can be detected in time, so as to reduce the phenomenon of conductor wear and fatigue damage caused by breeze vibration.

[0078] In some embodiments, see Figure 3The implementation flow chart of determining the vibration characteristics of breeze vibration determines the vibration characteristics of breeze vibration of the conductor corresponding to each span in the target transmission line according to the span image and meteorological data. It can be that the position change area of ​​the conductor in the target transmission line is first determined according to the span image; then, according to the position change area, it is determined whether the conductor corresponding to each span in the target transmission line moves; if the conductor moves, it is determined whether the meteorological data meets the conditions for breeze vibration; if the meteorological data meets the conditions for breeze vibration, then according to the span image, the vibration characteristics of breeze vibration of the conductor corresponding to each span in the target transmission line are extracted.

[0079] In this embodiment, the area where the position of the conductor in the target transmission line changes, that is, the position change area, can be determined through each frame of the span image corresponding to each section of the conductor; the position change of the conductor in the target transmission line can be determined by the size of the position change area, thereby judging whether the conductor moves.

[0080] Here, to determine the position change area of ​​the conductor in the target transmission line, the continuous span images corresponding to the conductor can be used for motion detection to identify the position change area of ​​the conductor. For example, a frame difference method, a three-frame difference method, etc. can be used.

[0081] When the conductor moves, the meteorological data is used to determine whether the movement of the conductor is likely to be breeze vibration. Therefore, the vibration characteristics of the conductor can be extracted when the conditions for breeze vibration are met to accurately obtain the vibration characteristics of the conductor breeze vibration.

[0082] Optional, such as Figure 3 As shown, this embodiment determines whether the conductor corresponding to each span in the target transmission line moves according to the position change area, which can be: judging whether the change height of the position change area is greater than the preset height; if the change height of the position change area is greater than the preset height, it is determined that the conductor in the target transmission line moves; if the change height of the position change area is less than or equal to the preset height, it is determined that the conductor in the target transmission line does not move.

[0083] In this embodiment, considering that the amplitude of breeze vibration is small and limited, it is possible to judge whether the wire moves by the size of the position change area, and then determine whether the wire is likely to vibrate in the breeze. If the height of the position change area is greater than the preset height, it means that the position of the wire has changed, that is, the wire has moved; if the height of the position change area is less than or equal to the preset height, it means that the position of the wire has basically not changed, that is, the wire has not moved.

[0084] Furthermore, since the amplitude of breeze vibration generally does not exceed 1 to 3 times the diameter of the conductor, the preset height can be set to the diameter of the conductor, or 1.5 times the diameter of the conductor, etc. The preset height here is only for schematic illustration and can be determined specifically according to the environment of the target transmission line.

[0085] Optional, such as Figure 3 As shown, in this embodiment, if the wire moves, it is determined whether the meteorological data meets the conditions for breeze vibration to occur, which can be: if the wire moves, it is determined whether the wind speed in the meteorological data is within the preset wind speed range; if the wind speed is within the preset wind speed range, it is determined that the meteorological data meets the conditions for breeze vibration to occur; if the wind speed is not within the preset wind speed range, it is determined that the meteorological data does not meet the conditions for breeze vibration to occur.

[0086] In this embodiment, considering that the occurrence of breeze vibration of the conductor is limited by wind speed, it is possible to further determine whether the wind speed in the meteorological data meets the conditions for breeze vibration. If the meteorological data meets the conditions for breeze vibration, it means that the movement of the conductor may be breeze vibration, and the vibration characteristics of breeze vibration can be further extracted.

[0087] Here, since breeze vibration mainly occurs when the wind speed is in the range of 0.5m / s to 10m / s, the preset wind speed range can be set to 0.5m / s to 10m / s. In order to more comprehensively obtain the vibration conditions of breeze vibration, the lower limit of the preset wind speed range can also be set to 0.2m / s, 0.3m / s, and 0.4m / s, etc., and the upper limit can be set to 11m / s, 12m / s, and 15m / s, etc. Here, the preset wind speed range can be specifically determined according to the actual breeze vibration conditions at the target transmission line.

[0088] In some embodiments, if the meteorological data of this embodiment meets the conditions for breeze vibration, the vibration characteristics of the breeze vibration of the conductor corresponding to each span in the target transmission line are extracted based on the span image. It can be: if the meteorological data meets the conditions for breeze vibration, the motion trajectory of the conductor corresponding to each span is determined separately based on all span images corresponding to the same span; then, based on the motion trajectory of the conductor corresponding to each span, the vibration characteristics of the breeze vibration of the conductor corresponding to each span are determined.

[0089] In this embodiment, when breeze vibration is likely to occur, the motion trajectory of the wire corresponding to each span is determined respectively, and then the vibration characteristics of the breeze vibration of the wire are extracted through the motion trajectory of the wire to accurately obtain the breeze vibration of each wire segment.

[0090] Optionally, if the meteorological data meets the conditions for breeze vibration, the motion trajectory of the wire corresponding to each span is determined based on all the span images corresponding to the same span. It can be: if the meteorological data meets the conditions for breeze vibration, for each span, the background image of the span is determined based on all the span images of the span; then, based on the background image, all the span images of the span are differentiated to obtain the position of the wire in each span image; finally, the position of the wire in each span image is arranged according to the time sequence of all the span images of the span to form the motion trajectory of the wire corresponding to the span.

[0091] In this embodiment, since when the wire moves, it is mainly the position of the wire that changes, and the environment other than the wire basically does not change. Therefore, through all the span images corresponding to the wire, the unchanged image can be first determined and used as the background image, and then the background image is used to find the changed area in each span image, that is, the position of the wire in the span image, so that the position of the wire is arranged and connected according to the time sequence of the span images to obtain the movement trajectory of the wire.

[0092] Optionally, the vibration characteristics of the breeze vibration of the conductor corresponding to each span are determined according to the motion trajectory of the conductor corresponding to each span, which can be: for each span, first determine a plurality of key points of the conductor corresponding to the span according to the tower parameters corresponding to the span; then, according to the motion trajectory of the conductor corresponding to the span, respectively determine the time series data corresponding to the motion trajectory of each key point; then, according to the time series data, respectively determine the vibration characteristics of each key point on the conductor corresponding to the span; finally, based on the vibration characteristics of each key point, obtain the vibration characteristics of the breeze vibration of the conductor corresponding to the span.

[0093] In this embodiment, different positions of the conductor have different distances from the pole tower, and the wind speed may also be different, that is, the influence of the breeze on the conductor is also different. Accordingly, the vibration characteristics of the breeze vibration at different positions on the conductor may be different. Therefore, multiple key points on the conductor can be determined, and the vibration characteristics of each key point can be determined respectively, so as to accurately obtain the vibration characteristics of the breeze vibration of the conductor.

[0094] Here, considering that the tower parameters corresponding to the conductors are different and have different effects on the conductors, multiple key points in the conductor can be selected according to the tower parameters. For example, if the heights of the towers at both ends of the conductor are not much different, the midpoint of the conductor and multiple points on both sides of the midpoint can be used as key points; for another example, if the heights of the towers at both ends of the conductor are very different, the lowest point of the conductor and the points at a certain distance from the lowest point can be used as key points, and the midpoint of the conductor may not be used as a key point. Among them, the points in the conductor that are prone to breeze vibration, as well as points at different positions or distances, are mainly determined according to the tower parameters as key points to determine the conductor as a whole.

[0095] In addition, each key point can be accurately analyzed through the time series data, and the vibration characteristics of the breeze vibration corresponding to the key point can be extracted. If the key point does not have breeze vibration, the vibration characteristics of the corresponding breeze vibration can be 0, or can be an empty set.

[0096] Optionally, the vibration characteristics may include the frequency and amplitude of the vibration. In this embodiment, the vibration characteristics of each key point on the conductor corresponding to the span are determined based on the time series data, and the time series data of each key point is Fourier transformed to obtain a frequency spectrum of the key point; the corresponding relationship between the frequency and amplitude of the vibration of the key point is determined based on the frequency spectrum; whether the corresponding relationship of the key point satisfies the frequency-amplitude relationship of breeze vibration is determined; if the corresponding relationship of the key point satisfies the frequency-amplitude relationship of breeze vibration, the vibration characteristics of the breeze vibration of the key point are determined based on the corresponding relationship and the frequency-amplitude relationship.

[0097] In addition, for each key point, the time series data of the key point can be analyzed, and the breeze vibration sequence data corresponding to the breeze vibration can be extracted from the time series data; based on the breeze vibration sequence data, the vibration characteristics of the breeze vibration occurring at the key point can be determined.

[0098] The above describes the process of determining the vibration characteristics of the conductor corresponding to each span. The following will continue to describe the process of evaluating the operating status of the target transmission line using the vibration characteristics.

[0099] In some embodiments, the operating status of the target transmission line is determined based on the vibration characteristics of the conductor corresponding to each span, the tower parameters and meteorological data corresponding to each span, which can be: first, the vibration characteristics of the conductor corresponding to each span, the tower parameters and meteorological data corresponding to each span are input into a preset conductor evaluation model, and the operating status of the conductor corresponding to each span output by the conductor evaluation model is obtained; wherein the conductor evaluation model is determined based on different tower parameters, vibration characteristics, meteorological data, and corresponding operating status; and then based on the operating status of the conductor corresponding to each span, the operating status of the target transmission line is determined.

[0100] In this embodiment, a pre-trained conductor evaluation model can be used to evaluate the operating status of the conductor corresponding to each span in the target transmission line. The conductor evaluation model can be trained using a model selected from a neural network model, a decision tree model, and a deep learning model.

[0101] Here, the operating status of the conductor in the transmission line may include a good state, a normal state, a risk state, and an abnormal state. The selected model may be trained using different tower parameters, vibration characteristics, meteorological data, power parameters of the conductor, and the corresponding operating status to obtain a conductor evaluation model. The operating status of the conductor under breeze vibration may be obtained through the conductor evaluation model, thereby obtaining the operating status of the target transmission line under breeze vibration.

[0102] In addition, the influence of breeze vibration on the operating state of the conductor in the transmission line can also include a good state, a normal state, a risk state and an abnormal state. The selected model can be trained using different tower parameters, vibration characteristics, meteorological data, and corresponding operating states to obtain a conductor evaluation model. Through the conductor evaluation model, the influence of breeze vibration on the operating state of the conductor in the target transmission line is obtained, the operating state of the conductor is obtained, and thus the operating state of the target transmission line is obtained.

[0103] The embodiment of the present invention obtains the pole tower parameters of the target transmission line, the video data and the meteorological data in the target time period, and through the video data, the span image of each span of the target transmission line in each frame of the video data can be determined, and the situation of each span in the target transmission line can be accurately obtained; through the span image, the position change area of ​​the conductor in the target transmission line is determined, and the position change situation of the conductor corresponding to each span in the target time period can be determined, so as to judge whether the conductor moves; then through the position change area, the meteorological data and the span image, the vibration characteristics of the breeze vibration of the conductor corresponding to each span in the target transmission line can be determined, and the breeze vibration situation of the target transmission line can be accurately obtained, so as to evaluate the operation of the target transmission line; finally, through the vibration characteristics of the conductor corresponding to each span, the pole tower parameters and the meteorological data corresponding to each span, the operating state of the target transmission line is determined, and the operating state of the target transmission line can be judged through the breeze vibration of the conductor, and the influence of the breeze vibration on the target transmission line can be detected in time, so as to reduce the phenomenon of conductor wear and fatigue damage caused by the breeze vibration. Among them, by judging the conditions for the occurrence of breeze vibration in turn through the position change area and meteorological data, it is possible to accurately find out whether breeze vibration is likely to occur, which in turn helps to determine the vibration characteristics of breeze vibration; and by determining the time series data corresponding to the key points of the conductor, the vibration characteristics of breeze vibration at each key point can be determined, so as to accurately determine whether breeze vibration occurs on the conductor and the vibration characteristics of breeze vibration, so as to accurately evaluate the target transmission line.

[0104] It should be understood that the order of execution of the steps in the above embodiment does not necessarily mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present invention.

[0105] The following is an embodiment of the device of the present invention. For details not described in detail therein, reference may be made to the corresponding method embodiment described above.

[0106] Figure 4 The structure diagram of the transmission line operation status assessment device based on video breeze vibration provided by an embodiment of the present invention is shown. For the convenience of explanation, only the part related to the embodiment of the present invention is shown, which is described in detail as follows:

[0107] like Figure 4 As shown, the transmission line operation status assessment device 40 based on video breeze vibration includes:

[0108] An acquisition module 41 is used to acquire the tower parameters of the target transmission line, as well as the video data and meteorological data within the target period;

[0109] An image division module 42 is used to determine, based on the video data, a span image of each span of the target transmission line in each frame of the video data;

[0110] A vibration extraction module 43, for determining the vibration characteristics of breeze vibration of the conductor corresponding to each span in the target transmission line according to the span image and meteorological data;

[0111] The evaluation module 44 is used to determine the operating status of the target transmission line according to the vibration characteristics of the conductor corresponding to each span, the tower parameters corresponding to each span, and the meteorological data.

[0112] In a possible implementation, the vibration extraction module 43 is specifically used to:

[0113] Determine the position change area of ​​the conductor in the target transmission line according to the span image;

[0114] According to the position change area, determine whether the conductor corresponding to each span in the target transmission line moves;

[0115] If the conductor moves, it is determined whether the meteorological data meets the conditions for breeze vibration;

[0116] If the meteorological data meets the conditions for breeze vibration, the vibration characteristics of breeze vibration of the conductor corresponding to each span in the target transmission line are extracted according to the span image.

[0117] In a possible implementation, the vibration extraction module 43 is specifically used to:

[0118] If the meteorological data meets the conditions for breeze vibration, the motion trajectory of the wire corresponding to each span is determined according to all span images corresponding to the same span;

[0119] According to the motion trajectory of the conductor corresponding to each span, the vibration characteristics of the breeze vibration of the conductor corresponding to each span are determined.

[0120] In a possible implementation, the vibration extraction module 43 is specifically used to:

[0121] If the meteorological data meets the condition for breeze vibration, then for each span, the background image of the span is determined based on all the span images of the span;

[0122] According to the background image, all the span images of the span are differentiated to obtain the position of the conductor in each span image;

[0123] According to the time sequence of all the span images of the span section, the position of the conductor in each span image is arranged to form the motion trajectory of the conductor corresponding to the span section.

[0124] In a possible implementation, the vibration extraction module 43 is specifically used to:

[0125] For each span, multiple key points of the conductor corresponding to the span are determined according to the tower parameters corresponding to the span;

[0126] According to the motion trajectory of the conductor corresponding to the span, the time series data corresponding to the motion trajectory of each key point is determined respectively;

[0127] According to the time series data, the vibration characteristics of each key point on the conductor corresponding to the span are determined respectively;

[0128] Based on the vibration characteristics of each key point, the vibration characteristics of the breeze vibration of the conductor corresponding to the span are obtained.

[0129] In a possible implementation, the vibration extraction module 43 is specifically used to:

[0130] Determine whether the change height of the position change area is greater than the preset height;

[0131] If the height change of the position change area is greater than the preset height, it is determined that the conductor in the target transmission line moves;

[0132] If the change height of the position change area is less than or equal to the preset height, it is determined that the conductor in the target transmission line has not moved.

[0133] In a possible implementation, the vibration extraction module 43 is specifically used to:

[0134] If the wire moves, it is determined whether the wind speed in the meteorological data is within the preset wind speed range;

[0135] If the wind speed is within the preset wind speed range, it is determined that the meteorological data meets the conditions for breeze vibration to occur;

[0136] If the wind speed is not within the preset wind speed range, it is determined that the meteorological data does not meet the conditions for breeze vibration to occur.

[0137] In a possible implementation, the evaluation module 44 is specifically configured to:

[0138] Input the vibration characteristics of the conductor corresponding to each span, the tower parameters and meteorological data corresponding to each span into a preset conductor evaluation model, and obtain the operating status of the conductor corresponding to each span output by the conductor evaluation model; wherein the conductor evaluation model is determined according to different tower parameters, vibration characteristics, meteorological data, and corresponding operating status;

[0139] Based on the operating status of the conductor corresponding to each span, the operating status of the target transmission line is determined.

[0140] In a possible implementation, the image segmentation module 42 is specifically configured to:

[0141] Processing the video data frame by frame to obtain multiple frames of images of the video data;

[0142] Determine the position of the tower in each frame of the image respectively;

[0143] According to two adjacent pole towers in each frame image, the area corresponding to each span is extracted to obtain a span image of each span of the target transmission line; wherein the area between two adjacent pole towers forms a span.

[0144] In the above embodiments, the description of each embodiment has its own emphasis. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0145] Those of ordinary skill in the art will appreciate that the templates, units, and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the present invention.

[0146] If the module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present invention implements all or part of the processes in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and the computer program can implement the steps of the above-mentioned various method embodiments when executed by the processor. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. Computer-readable media may include: any entity or device that can carry computer program code, recording medium, U disk, mobile hard disk, disk, optical disk, computer memory, read-only memory, random access memory, electrical carrier signal, telecommunication signal and software distribution medium, etc.

[0147] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A method for evaluating the operating status of a power transmission line based on video breeze vibration, characterized in that: include: Obtain the tower parameters of the target transmission line, as well as the video data and meteorological data within the target period; Determine, according to the video data, a span image of each span of the target transmission line in each frame of the video data; Determine the vibration characteristics of breeze vibration of the conductor corresponding to each span in the target transmission line according to the span image and the meteorological data; The operating state of the target transmission line is determined according to the vibration characteristics of the conductor corresponding to each span, the tower parameters corresponding to each span and the meteorological data.

2. The method for evaluating the operation status of a power transmission line based on video breeze vibration according to claim 1 is characterized in that: Determining the vibration characteristics of breeze vibration of the conductor corresponding to each span in the target transmission line according to the span image and the meteorological data includes: Determining a position change area of ​​a conductor in the target transmission line according to the span image; Determining whether the conductor corresponding to each span in the target transmission line moves according to the position change area; If the conductor moves, it is determined whether the meteorological data satisfies the condition for breeze vibration; If the meteorological data meets the condition for breeze vibration, the vibration characteristics of breeze vibration of the conductor corresponding to each span in the target transmission line are extracted according to the span image.

3. The method for evaluating the operation status of a power transmission line based on video breeze vibration according to claim 2 is characterized in that: If the meteorological data meets the condition for breeze vibration, then according to the span image, the vibration characteristics of breeze vibration of the conductor corresponding to each span in the target transmission line are extracted, including: If the meteorological data meets the condition for breeze vibration, the motion trajectory of the wire corresponding to each span is determined respectively according to all span images corresponding to the same span; According to the motion trajectory of the conductor corresponding to each span, the vibration characteristics of the breeze vibration of the conductor corresponding to each span are determined.

4. The method for evaluating the operation status of a power transmission line based on video breeze vibration according to claim 3 is characterized in that: If the meteorological data meets the condition of breeze vibration, the motion trajectory of the wire corresponding to each span is determined according to all span images corresponding to the same span, including: If the meteorological data meets the condition for breeze vibration, then for each span, a background image of the span is determined based on all span images of the span; According to the background image, all the span images of the span are differentiated to obtain the position of the conductor in each span image; According to the time sequence of all the span images of the span section, the position of the conductor in each span image is arranged to form the motion trajectory of the conductor corresponding to the span section.

5. The method for evaluating the operation status of a power transmission line based on video breeze vibration according to claim 3 is characterized in that: The method of determining the vibration characteristics of the breeze vibration of the conductor corresponding to each span according to the motion trajectory of the conductor corresponding to each span includes: For each span, multiple key points of the conductor corresponding to the span are determined according to the tower parameters corresponding to the span; According to the motion trajectory of the conductor corresponding to the span, the time series data corresponding to the motion trajectory of each key point is determined respectively; According to the time series data, the vibration characteristics of each key point on the conductor corresponding to the span are determined respectively; Based on the vibration characteristics of each key point, the vibration characteristics of the breeze vibration of the conductor corresponding to the span are obtained.

6. The method for evaluating the operation status of a power transmission line based on video breeze vibration according to any one of claims 2 to 5, characterized in that: Determining whether a conductor corresponding to each span in the target transmission line moves according to the position change area includes: Determine whether the change height of the position change area is greater than a preset height; If the change height of the position change area is greater than a preset height, it is determined that the conductor in the target power transmission line moves; If the change height of the position change area is less than or equal to the preset height, it is determined that the conductor in the target power transmission line has not moved.

7. The method for evaluating the operation status of a power transmission line based on video breeze vibration according to any one of claims 2 to 5, characterized in that: If the conductor moves, it is determined whether the meteorological data meets the conditions for breeze vibration, including: If the wire moves, determining whether the wind speed in the meteorological data is within a preset wind speed range; If the wind speed is within the preset wind speed range, it is determined that the meteorological data meets the condition for breeze vibration to occur; If the wind speed is not within the preset wind speed range, it is determined that the meteorological data does not meet the conditions for breeze vibration to occur.

8. The method for evaluating the operation status of a power transmission line based on video breeze vibration according to any one of claims 1 to 5, characterized in that: Determining the operating state of the target transmission line according to the vibration characteristics of the conductor corresponding to each span, the tower parameters corresponding to each span and the meteorological data, including: Inputting the vibration characteristics of the conductor corresponding to each span, the pole tower parameters corresponding to each span, and the meteorological data into a preset conductor evaluation model, and obtaining the operating status of the conductor corresponding to each span output by the conductor evaluation model; wherein the conductor evaluation model is determined according to different pole tower parameters, vibration characteristics, meteorological data, and corresponding operating status; The operating state of the target transmission line is determined based on the operating state of the conductor corresponding to each span.

9. The method for evaluating the operation status of a power transmission line based on video breeze vibration according to any one of claims 1 to 5, characterized in that: Determining, according to the video data, a span image of each span of the target transmission line in each frame of the video data, comprising: Processing the video data frame by frame to obtain multiple frames of images of the video data; Determine the position of the tower in each frame of the image respectively; According to two adjacent pole towers in each frame image, the area corresponding to each span is extracted to obtain a span image of each span of the target transmission line; wherein the area between two adjacent pole towers forms a span.

10. A device for evaluating the operation status of a power transmission line based on video breeze vibration, characterized in that: include: An acquisition module, used to acquire the tower parameters of the target transmission line, as well as the video data and meteorological data within the target period; An image division module, used for determining, according to the video data, a span image of each span section of the target transmission line in each frame image of the video data; A vibration extraction module, used to determine the vibration characteristics of breeze vibration of the conductor corresponding to each span in the target transmission line according to the span image and the meteorological data; The evaluation module is used to determine the operating status of the target transmission line according to the vibration characteristics of the conductor corresponding to each span, the tower parameters corresponding to each span and the meteorological data.

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