Line abnormity diagnosis method and device based on galloping monitoring

Abstract

The invention is suitable for the technical field of power transmission line monitoring, and provides a line abnormity diagnosis method and device based on galloping monitoring, and the method comprises the steps: obtaining a first galloping frequency and a first galloping amplitude of a first span segment where galloping occurs in a power transmission line; when the cumulative time of the first-level galloping of the first span section reaches a preset duration, obtaining a second galloping amplitude of a second span section; wherein the first-stage galloping is the condition that the first galloping frequency is greater than the preset frequency and the first galloping amplitude is greater than the preset amplitude; the second span section is a span section adjacent to the first span section in the power transmission line; and based on the first galloping amplitude and the second galloping amplitude, determining a line abnormal condition of the first span section. According to the invention, the galloping amplitudes of the adjacent span sections are introduced, and the abnormal condition of the line of the first span section is determined through the galloping amplitudes of the first span section and the adjacent span sections, so that the abnormal condition of the line can be judged timely and accurately.

Description

Technical Field

[0001] The present invention belongs to the technical field of power transmission line monitoring, and in particular relates to a line abnormality diagnosis method and device based on dancing monitoring. Background Art

[0002] The galloping of transmission line conductors mainly refers to the low-frequency, large-amplitude self-excited vibration caused by wind on non-circular cross-sections. The galloping phenomenon may cause transmission line tripping, hardware wear, insulator string breakage, tower arm damage and other accidents. In severe cases, tower collapse accidents may occur, causing serious economic losses, and will also have a significant impact on the normal operation of transmission lines.

[0003] When a certain span section of a transmission line frequently experiences galloping, the hardware, insulators, tower arms and other structures of the section are prone to damage, which in turn exacerbates the galloping phenomenon. When the galloping phenomenon becomes more serious, the transmission line will soon suffer a serious failure. If timely countermeasures are taken when the galloping phenomenon just intensifies, serious economic losses and power supply accidents can be avoided. However, the current monitoring of the galloping phenomenon mainly monitors whether the galloping occurs and makes a rough assessment of the galloping situation. It is impossible to make a timely and accurate judgment on line abnormalities through the galloping phenomenon. Summary of the invention

[0004] The embodiments of the present invention provide a line abnormality diagnosis method and device based on dancing monitoring to solve the problem that it is impossible to make a relatively timely and accurate judgment on line abnormality through the dancing phenomenon.

[0005] The present invention is achieved through the following technical solutions:

[0006] In a first aspect, an embodiment of the present invention provides a line abnormality diagnosis method based on dancing monitoring, comprising: obtaining a first dancing frequency and a first dancing amplitude of a first span segment in a transmission line where dancing occurs; when the accumulated time of first-level dancing in the first span segment reaches a preset duration, obtaining a second dancing amplitude of a second span segment; wherein the first-level dancing is a situation in which the first dancing frequency is greater than a preset frequency, and the first dancing amplitude is greater than a preset amplitude; the second span segment is a span segment in the transmission line adjacent to the first span segment; based on the first dancing amplitude and the second dancing amplitude, determining the line abnormality of the first span segment.

[0007] In combination with the first aspect, in some embodiments, determining the line abnormality of the first gear range based on the first dancing amplitude and the second dancing amplitude includes:

[0008] When the difference between the first dancing amplitude and the second dancing amplitude is greater than a preset amplitude difference, it is determined that there is an abnormality in the line component of the first gear range; wherein the line component includes a conductor, hardware, an insulator and a tower bolt.

[0009] In combination with the first aspect, in some embodiments, before determining the line abnormality of the first gear span segment based on the first dancing amplitude and the second dancing amplitude, the method further includes: when the accumulated time of the first-level dancing in the first gear span segment reaches a preset duration, acquiring a second dancing frequency of the second gear span segment;

[0010] The determining, based on the first dancing amplitude and the second dancing amplitude, of the line abnormality of the first gear span section comprises:

[0011] determining a first ratio based on the first dancing frequency and the second dancing frequency;

[0012] determining a second ratio based on the first dancing amplitude and the second dancing amplitude;

[0013] determining a dancing difference value based on a product of a first preset weight and the first ratio, and a product of a second preset weight and the second ratio;

[0014] When the dancing difference value is greater than a preset threshold, it is determined that an abnormality exists in the line component of the first gear segment.

[0015] In combination with the first aspect, in some embodiments, determining a first ratio based on the first dancing frequency and the second dancing frequency includes:

[0016] Calculate the ratio of the first dancing frequency to the second dancing frequency to obtain the first ratio; or calculate the ratio of the first difference to the second dancing frequency to obtain the first ratio; the first difference is the difference between the first dancing frequency and the second dancing frequency;

[0017] The determining a second ratio based on the first dancing amplitude and the second dancing amplitude comprises:

[0018] The second ratio is obtained by calculating the ratio of the first dancing amplitude to the second dancing amplitude; or the second ratio is obtained by calculating the ratio of the second difference to the second dancing amplitude; the second difference is the difference between the first dancing amplitude and the second dancing amplitude.

[0019] In combination with the first aspect, in some embodiments, after determining that the line component of the first gear range has an abnormality, the method further includes:

[0020] An abnormality troubleshooting instruction is issued; the abnormality troubleshooting instruction includes the position information of the first gear range segment and abnormality prompt information, and the abnormality prompt information is used to instruct to troubleshoot the line components of the first gear range segment.

[0021] In combination with the first aspect, in some embodiments, obtaining a first dancing frequency and a first dancing amplitude of a first gear span section where dancing occurs in the power transmission line includes:

[0022] Performing dancing monitoring on the transmission line;

[0023] When dancing is detected in the first gear segment, a first dancing frequency and a first dancing amplitude of the first gear segment are obtained.

[0024] In combination with the first aspect, in some embodiments, the performing dancing monitoring on the power transmission line includes:

[0025] Collecting vibration signals of the transmission line within a monitoring period;

[0026] Based on the vibration signal, a first frequency spectrum is determined; based on the first frequency spectrum, it is detected whether there is a span section where dancing occurs in the transmission line.

[0027] In combination with the first aspect, in some embodiments, the performing dancing monitoring on the power transmission line includes:

[0028] Collecting image information of the transmission line during a monitoring period;

[0029] Based on the image information, it is detected whether there is a span section where dancing occurs in the transmission line.

[0030] In a second aspect, an embodiment of the present invention provides a line abnormality diagnosis device based on galloping monitoring, comprising:

[0031] A first acquisition module is used to acquire a first dancing frequency and a first dancing amplitude of a first gear span section where dancing occurs in the power transmission line;

[0032] A second acquisition module is used to acquire a second dancing amplitude of a second gear span segment when the accumulated time of the first-grade dancing of the first gear span segment reaches a preset time length; wherein the first-grade dancing is a situation where the first dancing frequency is greater than a preset frequency and the first dancing amplitude is greater than a preset amplitude; the second gear span segment is a gear span segment adjacent to the first gear span segment in the transmission line;

[0033] A diagnostic module, configured to determine a line abnormality of the first gear segment based on the first dancing amplitude and the second dancing amplitude

[0034] In conjunction with the second aspect, in some embodiments, the diagnosis module is specifically used to:

[0035] When the difference between the first dancing amplitude and the second dancing amplitude is greater than a preset amplitude difference, it is determined that there is an abnormality in the line component of the first gear range; wherein the line component includes a conductor, hardware, an insulator and a tower bolt.

[0036] The embodiment of the present invention provides a line abnormality diagnosis method and device based on dancing monitoring, the method comprising obtaining a first dancing frequency and a first dancing amplitude of a first span segment where dancing occurs in a transmission line; when the accumulated time of the first-grade dancing occurring in the first span segment reaches a preset duration, obtaining a second dancing amplitude of a second span segment; and determining the line abnormality of the first span segment based on the first dancing amplitude and the second dancing amplitude. In the embodiment of the present invention, when the time of the first-grade dancing occurring in the first span segment reaches a preset duration, it can be preliminarily estimated that the line components of the first span segment may be damaged due to the dancing phenomenon, and when the line components are seriously damaged, the dancing phenomenon of this section of the line will be more serious than the dancing phenomenon of other parts of the line, so at this time, the second dancing amplitude of the second span segment is obtained, and the line of the first span segment is diagnosed based on the first dancing amplitude and the second dancing amplitude, so that the line abnormality can be judged more timely and accurately, which helps to take countermeasures in time and avoid serious economic losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] 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 related technical descriptions are 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 labor.

[0038] Figure 1 Schematic diagram of an application scenario of a line abnormality diagnosis method based on dancing monitoring provided by an embodiment of the present invention;

[0039] Figure 2 It is a flow chart of a line abnormality diagnosis method based on dancing monitoring provided by an embodiment of the present invention;

[0040] Figure 3 It is a structural schematic diagram of a line abnormality diagnosis device based on dancing monitoring provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0041] 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.

[0042] It should be understood that when used in the present specification and the appended claims, the term "comprising" indicates the presence of described features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or combinations thereof.

[0043] In addition, in the description of the present specification and the appended claims, the terms "first", "second", "third", etc. are only used to distinguish the descriptions and cannot be understood as indicating or implying relative importance.

[0044] Meteorological factors and geographical topography are the main factors affecting the galloping of transmission lines, and they are also external factors. For several adjacent span sections in a transmission line, they are usually subject to similar meteorological and geographical influences, so their galloping conditions are also similar. If the transmission line often gallops, it may cause bolts to loosen or fall off, and hardware, insulators, jumpers, etc. to be damaged. These damages will reduce the structural integrity of the transmission line, aggravate the galloping of the conductor, and increase the risk of accidents. If the line components (such as bolts, hardware, insulators, etc.) of a span section are loose or damaged, the vibration characteristics of this section of the line will change, resulting in a different galloping frequency from that of the adjacent sections. For example, a damaged insulator may not be able to support the conductor normally, resulting in changes in the spacing and relative positions of the conductors, increasing the collision between the conductors, and thus aggravating the galloping phenomenon. Damaged insulators may also cause uneven distribution of conductor tension, increase the tension of the conductors in certain sections, and make these sections more susceptible to wind excitation and galloping. Therefore, if the aggravation of the above-mentioned dancing phenomenon is detected and identified, the damage of the line components in the transmission line can be confirmed to a certain extent.

[0045] In view of this, an embodiment of the present invention provides a line abnormality diagnosis method based on dancing monitoring, the method comprising obtaining a first dancing frequency and a first dancing amplitude of a first span segment where dancing occurs in a transmission line; when the accumulated time of the first-grade dancing occurring in the first span segment reaches a preset duration, obtaining a second dancing amplitude of a second span segment; wherein the first-grade dancing is a situation where the first dancing frequency is greater than the preset frequency and the first dancing amplitude is greater than the preset amplitude; the second span segment is a span segment adjacent to the first span segment in the transmission line; based on the first dancing amplitude and the second dancing amplitude, determining the line abnormality of the first span segment. In this way, when the accumulated time of the first-grade dancing occurring in the first span segment reaches a preset duration, the second dancing amplitude of the second span segment is obtained, and then the line abnormality is diagnosed through the dancing amplitudes of the adjacent span segments (i.e., the first dancing amplitude and the second dancing amplitude), so that the line component damage caused by the dancing can be discovered in time for timely processing.

[0046] For example, the embodiments of the present invention can be applied to Figure 1 In the application scenario shown in FIG. 1 , a transmission line 100 includes a first span section 110 and two second span sections 120 adjacent to the first span section 110. It should be understood that a span section refers to a line between two adjacent towers in a transmission line. Figure 1 When it is monitored that the accumulated time of the first-grade dancing in the first-grade segment 110 reaches the preset time, it can be preliminarily estimated that the line components in the first-grade segment 110 may be slightly damaged at this time, and it is necessary to start focusing on monitoring the first-grade segment 110. Therefore, the second dancing amplitudes of the two second-grade segments 120 are obtained at this time. Next, it is determined whether the line components in the first-grade segment 110 are damaged by the first dancing amplitude of the first-grade segment 110 and the second dancing amplitude of the second-grade segment 120. For example, after the accumulated time of the first-grade dancing in the first-grade segment 110 reaches the preset time, if it is detected that the first dancing amplitude is significantly greater than the second dancing amplitude, it indicates that there is a problem with the line components of the first-grade segment 110 itself, which causes its dancing condition to be significantly different from that of the adjacent segments.

[0047] Figure 2 is a flow chart of a line abnormality diagnosis method based on dancing monitoring provided by an embodiment of the present invention, referring to Figure 2 , the line abnormality diagnosis method based on dancing monitoring is described in detail as follows:

[0048] S101, obtaining a first dancing frequency and a first dancing amplitude in a first gear range where dancing occurs in a transmission line.

[0049] In some embodiments, step S101 may be implemented by steps S201 to S202:

[0050] S201, monitoring the dancing of the transmission line.

[0051] S202, when dancing is detected in the first gear segment, a first dancing frequency and a first dancing amplitude of the first gear segment are obtained.

[0052] In a possible implementation, the implementation process of step S201 may include: collecting a vibration signal of the transmission line within a monitoring period; determining a first frequency spectrum based on the vibration signal; and detecting whether there is a span section where dancing occurs in the transmission line based on the first frequency spectrum.

[0053] The above-mentioned determining the first spectrum based on the vibration signal is to perform frequency domain analysis on the vibration signal. Based on the first spectrum, detecting whether there is a span section where galloping occurs in the transmission line may include: extracting vibration characteristics based on the first spectrum; and determining whether there is a span section where galloping occurs in the transmission line based on the vibration characteristics and a preset characteristic threshold.

[0054] Optionally, a distributed optical fiber sensing system is deployed in the transmission line to collect vibration signals on the transmission line through the distributed optical fiber sensing system. The vibration signal is a two-dimensional signal in time and space. The spatial points of the optical fiber correspond to the spatial points on the transmission line one by one, and each spatial point is a signal collection point. Therefore, the vibration signal collected by the distributed optical fiber sensing system is a two-dimensional signal.

[0055] The initial signal of wire dancing collected by the distributed fiber optic sensor can be the phase change of the optical signal in the optical fiber caused by vibration. In the time domain, the root mean square value (RMS) of the signal can reflect the energy of the vibration signal, and the fluctuation coefficient (that is, the number of amplitude differences greater than a certain threshold in the same rising / falling trend of the signal per unit time) can describe the time domain change characteristics of the vibration signal. In the frequency domain analysis, the spectral components of the vibration signal and the conduction and absorption characteristics of the medium are different, resulting in different frequency distribution of the signal. Under normal circumstances, the spectrum of the optical fiber signal is mainly low-frequency components, but when it is disturbed by vibration, the intermediate frequency and high-frequency components in the signal frequency domain will also increase. The high-frequency energy coefficient (that is, the energy of the signal power spectrum in the high frequency band) and the cutoff frequency (that is, the frequency value at which the signal tends to be stable in the power spectrum) can be used as the basis for identifying interference signals.

[0056] In another possible implementation, the implementation process of step S201 may include: collecting image information of the power transmission line within the monitoring period; and based on the image information, detecting whether there is a span section where the power transmission line is waving.

[0057] Exemplarily, a video image of a power transmission line during a monitoring period is collected; multiple video frames are captured from the video image, and the multiple video frames are filtered and denoised; dancing features in the denoised image are extracted through a deep learning network; and based on the extracted dancing features, the dancing conditions of each span section in the power transmission line are identified.

[0058] In the embodiment of the present invention, the dancing frequency and the dancing amplitude can be directly obtained by various sensors and monitoring devices, or the dancing frequency and the dancing amplitude can be determined by analyzing vibration signals or dancing characteristics. This application does not limit this.

[0059] S102, when the accumulated time of the first-stage dancing in the first gear segment reaches a preset time length, obtaining a second dancing amplitude in the second gear segment.

[0060] Among them, the first-level dancing refers to the situation where the first dancing frequency is greater than the preset frequency, and the first dancing amplitude is greater than the preset amplitude; the second gear span section is the gear span section adjacent to the first gear span section in the transmission line.

[0061] In an embodiment of the present invention, the preset duration may be the cumulative duration of the dancing that causes minor damage to the line components, and its value may be determined based on historical statistical data. It is understood that when the cumulative duration of the first-level dancing in the first span segment reaches the preset duration, it may be considered that the line components of the first span segment are slightly damaged, and at this time, it is necessary to focus on monitoring the first span segment in order to promptly detect serious damage. The second span segment may be the two span segments adjacent to the first span segment. In an embodiment where the transmission line span is smaller, the second span segment may also be multiple span segments adjacent to the first span segment, and the number of the second span segments may be determined based on actual conditions.

[0062] S103: Determine the line abnormality of the first gear range based on the first dancing amplitude and the second dancing amplitude.

[0063] In some embodiments, step S103 is implemented as follows: when the difference between the first dancing amplitude and the second dancing amplitude is greater than a preset amplitude difference, it is determined that there is an abnormality in the line component of the first gear range. The line component includes a conductor, hardware, insulators and tower bolts.

[0064] In the above embodiment, the abnormality of the line component is judged by the difference in the dancing amplitude between adjacent span segments. It is only necessary to obtain the dancing amplitude and calculate the amplitude difference. The amount of calculation is small, which is conducive to timely determination of abnormal conditions. Here, the difference in the dancing amplitude is used instead of the difference in the dancing frequency because when the transmission line dances, the range of the dancing amplitude is about 5 to 300 times the diameter of the conductor, and the range of the dancing frequency is about 0.1 to 3 Hz. It can be seen that the range of the dancing frequency is small and is not suitable for difference comparison, so it is more accurate to use the dancing amplitude.

[0065] In some other embodiments, before step S103, the above-mentioned line abnormality diagnosis method based on dancing monitoring may further include: when the accumulated time of the first-level dancing in the first gear segment reaches a preset time, obtaining the second dancing frequency of the second gear segment. Accordingly, the implementation process of step S103 may include:

[0066] S301, determining a first ratio based on a first dancing frequency and a second dancing frequency.

[0067] In one possible implementation, the first ratio may be a ratio of the first dancing frequency to the second dancing frequency. That is, the ratio of the first dancing frequency to the second dancing frequency is calculated to obtain the first ratio. In another possible implementation, the first ratio may be a ratio of the first difference to the second dancing frequency, and the first difference is the difference between the first dancing frequency and the second dancing frequency. That is, the ratio of the first difference to the second dancing frequency is calculated to obtain the first ratio.

[0068] S302: Determine a second ratio based on the first dancing amplitude and the second dancing amplitude.

[0069] In one possible implementation, the second ratio may be a ratio of the first dance amplitude to the second dance amplitude. That is, the ratio of the first dance amplitude to the second dance amplitude is calculated to obtain the second ratio. In another possible implementation, the second ratio may be a ratio of the second difference to the second dance amplitude, and the second difference is the difference between the first dance amplitude and the second dance amplitude. That is, the ratio of the second difference to the second dance amplitude is calculated to obtain the second ratio.

[0070] S303: Determine a dancing difference value based on a product of the first preset weight and the first ratio, and a product of the second preset weight and the second ratio.

[0071] Optionally, the dancing difference value is the sum of the product of the first preset weight and the first ratio and the product of the second preset weight and the second ratio.

[0072] S304: When the dancing difference value is greater than a preset threshold, it is determined that an abnormality exists in the line component of the first gear range.

[0073] The above embodiment introduces dancing frequency and dancing amplitude at the same time, and measures the difference in dancing degree between adjacent gear segments according to the frequency / amplitude ratio or percentage. Finally, the dancing frequency and dancing amplitude are combined through preset weights, thereby improving the accuracy of abnormal judgment.

[0074] In some embodiments, after step S103, the line abnormality diagnosis method based on dancing monitoring may further include:

[0075] S104, issuing an abnormality troubleshooting instruction; the abnormality troubleshooting instruction includes position information of the first gear range segment and abnormality prompt information, and the abnormality prompt information is used to instruct to troubleshoot the line components of the first gear range segment.

[0076] In the above embodiment, after discovering that there is an abnormality in the line component in the first gear span section, an abnormality investigation instruction is issued. The management personnel can then dispatch staff to the location of the first gear span section in a timely manner to conduct targeted maintenance according to the abnormality investigation instruction to prevent continuous dancing from affecting the power supply effect.

[0077] In some embodiments, after step S103, the line abnormality diagnosis method based on dancing monitoring may further include:

[0078] If the first dancing amplitude is greater than the preset maximum amplitude and the second dancing amplitude is greater than the preset maximum amplitude, a warning signal is issued; the warning signal is used to indicate that a line fault is about to occur in the first gear range section and the second gear range section.

[0079] In the above embodiment, the line fault may be line component damage and electrical fault. Electrical faults include phase-to-phase tripping, flashover, conductor ablation, wire breakage, phase-to-ground short circuit, and mixed line tripping. When the dancing amplitude of the first gear segment and the second gear segment is greater than the preset maximum amplitude, it indicates that both the first gear segment and the second gear segment have violent dancing phenomena, which will have a serious impact on the transmission line, so it is necessary to issue a warning signal in time so as to quickly take countermeasures to prevent serious accidents.

[0080] In the above-mentioned line abnormality diagnosis method based on dancing monitoring, when the accumulated time of the first-level dancing in the first span segment reaches the preset time, it is preliminarily estimated that the line components in the first span segment may have been slightly damaged at this time, and the span segment needs to be monitored intensively. Therefore, the second dancing amplitude of the second span segment is obtained at this time. Next, the difference between the first dancing amplitude of the first span segment and the second dancing amplitude of the second span segment is used to determine whether the line components in the first span segment are damaged. In this way, line component problems caused by long-term dancing in the transmission line can be discovered in time, and serious accidents and serious economic losses can be prevented in time.

[0081] 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.

[0082] Corresponding to the line abnormality diagnosis method based on dancing monitoring described in the above embodiment, Figure 3 A schematic diagram of the structure of a line abnormality diagnosis device based on dancing monitoring provided by an embodiment of the present invention is shown. For ease of description, only the parts related to the embodiment of the present invention are shown.

[0083] See also Figure 3 The line abnormality diagnosis device 300 based on dancing monitoring in the embodiment of the present invention may include a first acquisition module 310 , a second acquisition module 320 and a diagnosis module 330 .

[0084] The first acquisition module 310 is used to acquire a first dancing frequency and a first dancing amplitude of a first gear range where dancing occurs in the power transmission line;

[0085] The second acquisition module 320 is used to acquire the second dancing amplitude of the second gear span when the accumulated time of the first-grade dancing in the first gear span reaches a preset time; wherein the first-grade dancing is when the first dancing frequency is greater than the preset frequency and the first dancing amplitude is greater than the preset amplitude; the second gear span is the gear span adjacent to the first gear span in the transmission line;

[0086] The diagnosis module 330 is used to determine the abnormality of the line of the first gear segment based on the first dancing amplitude and the second dancing amplitude.

[0087] Optionally, the first acquisition module 310 is specifically used for:

[0088] Conducting galloping monitoring on transmission lines;

[0089] When dancing is detected in the first gear segment, a first dancing frequency and a first dancing amplitude of the first gear segment are obtained.

[0090] Optionally, the first acquisition module 310 is specifically used for:

[0091] Collect vibration signals of transmission lines during the monitoring period;

[0092] Based on the vibration signal, a first frequency spectrum is determined; based on the first frequency spectrum, it is detected whether there is a span section where dancing occurs in the transmission line.

[0093] Optionally, the first acquisition module 310 is specifically used for:

[0094] Collect image information of the transmission line during the monitoring period;

[0095] Based on the image information, it is detected whether there is a span section where dancing occurs in the transmission line.

[0096] Optionally, the diagnosis module 330 is specifically used for:

[0097] When the difference between the first dancing amplitude and the second dancing amplitude is greater than the preset amplitude difference, it is determined that there is an abnormality in the line component of the first gear range; wherein the line component includes a conductor, hardware, insulators and tower bolts.

[0098] Optionally, the second acquisition module is further configured to acquire the second dancing frequency of the second gear range when the accumulated time of the first-stage dancing in the first gear range reaches a preset time. The diagnosis module 330 is specifically configured to:

[0099] determining a first ratio based on the first dancing frequency and the second dancing frequency;

[0100] determining a second ratio based on the first dance amplitude and the second dance amplitude;

[0101] Determining a dancing difference value based on a product of a first preset weight and a first ratio, and a product of a second preset weight and a second ratio;

[0102] When the dancing difference value is greater than a preset threshold, it is determined that an abnormality exists in the line component of the first gear segment.

[0103] Optionally, the diagnosis module 330 is specifically used for:

[0104] Calculate the ratio of the first dancing frequency to the second dancing frequency to obtain a first ratio; or calculate the ratio of the first difference to the second dancing frequency to obtain a first ratio; the first difference is the difference between the first dancing frequency and the second dancing frequency;

[0105] The ratio of the first dancing amplitude to the second dancing amplitude is calculated to obtain a second ratio; or the ratio of the second difference to the second dancing amplitude is calculated to obtain a second ratio; the second difference is the difference between the first dancing amplitude and the second dancing amplitude.

[0106] Optionally, the line abnormality diagnosis device 300 based on galloping monitoring further includes:

[0107] The prompt module is used to issue an abnormality troubleshooting instruction; the abnormality troubleshooting instruction includes the position information of the first gear range segment and abnormality prompt information, and the abnormality prompt information is used to instruct to troubleshoot the line components of the first gear range segment.

[0108] 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.

[0109] 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.

[0110] 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. When the computer program is executed by the processor, it can implement the steps of the above-mentioned various line abnormality diagnosis method embodiments based on dancing monitoring. 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, etc. The computer-readable medium may include: any entity or device that can carry the 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.

[0111] The embodiments described above 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 all be included in the protection scope of the present invention.

Claims

1. A line abnormality diagnosis method based on dancing monitoring, characterized in that: include: Obtaining a first dancing frequency and a first dancing amplitude in a first gear-span section where dancing occurs in the transmission line; When the accumulated time of the first-stage dancing in the first-span segment reaches a preset duration, a second dancing amplitude of the second-span segment is obtained; wherein the first-stage dancing is when the first dancing frequency is greater than a preset frequency, and the first dancing amplitude is greater than a preset amplitude; the second-span segment is a span segment in the transmission line adjacent to the first-span segment; Based on the first dancing amplitude and the second dancing amplitude, a line abnormality of the first gear segment is determined.

2. The line abnormality diagnosis method based on dancing monitoring according to claim 1 is characterized in that: The determining, based on the first dancing amplitude and the second dancing amplitude, of the line abnormality of the first gear span section comprises: When the difference between the first dancing amplitude and the second dancing amplitude is greater than a preset amplitude difference, it is determined that there is an abnormality in the line component of the first gear range; wherein the line component includes a conductor, hardware, an insulator and a tower bolt.

3. The line abnormality diagnosis method based on dancing monitoring according to claim 1 is characterized in that: Before determining the line abnormality of the first gear span segment based on the first dancing amplitude and the second dancing amplitude, the method further includes: when the accumulated time of the first-level dancing in the first gear span segment reaches a preset duration, acquiring a second dancing frequency of the second gear span segment; The determining, based on the first dancing amplitude and the second dancing amplitude, of the line abnormality of the first gear span section comprises: determining a first ratio based on the first dancing frequency and the second dancing frequency; determining a second ratio based on the first dancing amplitude and the second dancing amplitude; determining a dancing difference value based on a product of a first preset weight and the first ratio, and a product of a second preset weight and the second ratio; When the dancing difference value is greater than a preset threshold, it is determined that an abnormality exists in the line component of the first gear segment.

4. The line abnormality diagnosis method based on dancing monitoring as claimed in claim 3 is characterized in that: The determining a first ratio based on the first dancing frequency and the second dancing frequency comprises: Calculate the ratio of the first dancing frequency to the second dancing frequency to obtain the first ratio; or calculate the ratio of the first difference to the second dancing frequency to obtain the first ratio; the first difference is the difference between the first dancing frequency and the second dancing frequency; The determining a second ratio based on the first dancing amplitude and the second dancing amplitude comprises: The second ratio is obtained by calculating the ratio of the first dancing amplitude to the second dancing amplitude; or the second ratio is obtained by calculating the ratio of the second difference to the second dancing amplitude; the second difference is the difference between the first dancing amplitude and the second dancing amplitude.

5. The line abnormality diagnosis method based on dancing monitoring according to claim 1 or 3, characterized in that: After determining that the line component of the first gear range has an abnormality, the method further includes: An abnormality troubleshooting instruction is issued; the abnormality troubleshooting instruction includes the position information of the first gear range segment and abnormality prompt information, and the abnormality prompt information is used to instruct to troubleshoot the line components of the first gear range segment.

6. The line abnormality diagnosis method based on dancing monitoring according to claim 1 is characterized in that: The step of obtaining a first dancing frequency and a first dancing amplitude of a first gear span section where dancing occurs in the power transmission line comprises: Performing dancing monitoring on the transmission line; When dancing is detected in the first gear segment, a first dancing frequency and a first dancing amplitude of the first gear segment are obtained.

7. The line abnormality diagnosis method based on dancing monitoring according to claim 6 is characterized in that: The step of monitoring the power transmission line for dancing includes: Collecting vibration signals of the transmission line within a monitoring period; Based on the vibration signal, a first frequency spectrum is determined; based on the first frequency spectrum, it is detected whether there is a span section where dancing occurs in the transmission line.

8. The line abnormality diagnosis method based on dancing monitoring according to claim 6 is characterized in that: The step of monitoring the power transmission line for dancing includes: Collecting image information of the transmission line during a monitoring period; Based on the image information, it is detected whether there is a span section where dancing occurs in the transmission line.

9. A line abnormality diagnosis device based on dancing monitoring, characterized in that: include: A first acquisition module is used to acquire a first dancing frequency and a first dancing amplitude of a first gear span section where dancing occurs in the power transmission line; A second acquisition module is used to acquire a second dancing amplitude of a second gear span segment when the accumulated time of the first-grade dancing of the first gear span segment reaches a preset time length; wherein the first-grade dancing is a situation where the first dancing frequency is greater than a preset frequency and the first dancing amplitude is greater than a preset amplitude; the second gear span segment is a gear span segment adjacent to the first gear span segment in the transmission line; A diagnosis module is used to determine a line abnormality of the first gear segment based on the first dancing amplitude and the second dancing amplitude.

10. The line abnormality diagnosis device based on galloping monitoring according to claim 9, characterized in that: The diagnostic module is specifically used for: When the difference between the first dancing amplitude and the second dancing amplitude is greater than a preset amplitude difference, it is determined that there is an abnormality in the line component of the first gear range; wherein the line component includes a conductor, hardware, an insulator and a tower bolt.

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