A method, system, equipment, and medium for lightning location of power transmission line corridors.

Abstract

This application discloses a method, system, equipment, and medium for lightning location of power transmission line channels. It performs lightning monitoring and analysis on power transmission line channels, and collects and analyzes lightning parameters of sub-channels in each detection period by dividing them into time periods and road segments. Then, it analyzes the lightning threat level and frequency of sub-channels in the detection period by lightning coefficient. It can realize the analysis of lightning characteristics based on time lines and transmission lines, and improve the accuracy of lightning monitoring results.

Description

Technical Field

[0001] This application relates to the field of lightning location technology, and in particular to a method, system, equipment and medium for lightning location of power transmission line channels. Background Technology

[0002] The lightning location system is a complete set of fully automatic, large-area, high-precision, continuous, and real-time lightning monitoring systems. It can display various lightning parameters such as the time of occurrence, location, and number of return strokes in real time, and can also achieve real-time sharing of lightning information. It is a high-tech system for observing and studying lightning and for providing lightning early warning.

[0003] The existing lightning location management system cannot analyze the frequency and overall severity of lightning threats on roads, thus failing to analyze lightning characteristics based on timelines and transmission lines, resulting in low accuracy of lightning monitoring results. Summary of the Invention

[0004] This application provides a method, system, device, and medium for lightning location of power transmission line corridors, which improves the problem that existing technologies cannot analyze the frequency and overall degree of lightning threats to roads, thus making it impossible to analyze lightning characteristics based on timelines and transmission lines, resulting in low accuracy of lightning monitoring results.

[0005] In view of this, the first aspect of this application provides a method for lightning location of power transmission line corridors, including:

[0006] The detection cycle is divided into several detection periods, and the transmission line channel is divided into several sub-channels. Lightning current data, lightning current steepness data, and impulse overvoltage data of each sub-channel are obtained during the detection period, and the lightning coefficient of each sub-channel during the detection period is calculated.

[0007] By comparing the lightning coefficient and lightning threshold of each sub-channel during the detection period, the lightning characteristics of each sub-channel during the detection period are determined.

[0008] The coverage coefficient for the detection period is obtained by calculating the ratio of the number of subchannels with dangerous lightning characteristics to the total number of subchannels during the detection period.

[0009] The safe time period is determined by the coverage coefficient of the detection period, and the safety coefficient is obtained by calculating the ratio of the number of all safe time periods to the number of all detection time periods.

[0010] By comparing the safety factor with the safety threshold, it is determined whether there is an overall lightning threat to the power transmission line corridor during the detection period;

[0011] If there is an overall lightning threat to the transmission line channel during the detection period, the ratio of the number of detection periods in which the lightning characteristics of each sub-channel are dangerous to the total number of detection periods is calculated to obtain the frequency coefficient of each sub-channel.

[0012] By comparing the frequency coefficient of each sub-channel with the frequency threshold, it is determined whether each sub-channel is a dangerous channel;

[0013] The lightning threat frequency of the power transmission line channel is determined based on the ratio of the number of dangerous channels to all sub-channels. The frequency signal is then acquired and sent to the mobile terminal of the management personnel.

[0014] Optionally, the lightning coefficient of each sub-channel during the detection period is calculated, including:

[0015] The lightning current data of each sub-channel during the detection period are weighted by the current coefficient to obtain the current weighted value of each sub-channel during the detection period.

[0016] The steepness coefficient is used to weight the lightning current steepness data of each sub-channel during the detection period to obtain the steepness weighted value of each sub-channel during the detection period.

[0017] The voltage coefficient is used to weight the impulse overvoltage data of each sub-channel during the detection period to obtain the voltage weighted value of each sub-channel during the detection period.

[0018] The current weighted value, steepness weighted value, and voltage weighted value of each sub-channel during the detection period are summed to obtain the lightning coefficient of each sub-channel during the detection period.

[0019] Wherein, the current coefficient is greater than the steepness coefficient, and the steepness coefficient is greater than the voltage coefficient.

[0020] Optionally, the lightning characteristics of each sub-channel during the detection period are determined by comparing the lightning coefficient with the lightning threshold of each sub-channel during the detection period, including:

[0021] Compare the lightning coefficient and lightning threshold of each sub-channel during the detection period;

[0022] If the lightning coefficient is less than the lightning threshold, it is determined that the corresponding sub-channel does not pose a lightning threat during the detection period, and the lightning characteristics of the corresponding sub-channel during the detection period are marked as safe.

[0023] If the lightning coefficient is greater than or equal to the lightning threshold, the corresponding sub-channel is determined to have a lightning threat during the detection period, and the lightning characteristics of the corresponding sub-channel during the detection period are marked as dangerous.

[0024] Optionally, safe periods can be determined by the coverage coefficient of the detection period, including:

[0025] Compare the coverage coefficient with the coverage threshold during the detection period;

[0026] If the coverage coefficient is less than the coverage threshold, it is determined that the lightning threat coverage of the corresponding detection area meets the requirements, and the corresponding detection period is marked as a safe period.

[0027] If the coverage coefficient is greater than or equal to the coverage threshold, it is determined that the lightning threat coverage of the corresponding detection area does not meet the requirements, and the corresponding detection period is marked as a dangerous period.

[0028] Optionally, the lightning threat frequency of the transmission line corridor is determined based on the ratio of the number of dangerous corridors to the number of all sub-corridors to determine whether the requirements are met, and the frequency signal is obtained, including:

[0029] Calculate the ratio of the number of dangerous channels to the number of all sub-channels to obtain the danger coefficient of the power transmission line channel.

[0030] Compare the magnitude of the risk factor with the risk threshold;

[0031] If the danger coefficient is less than the danger threshold, then the lightning threat frequency of the power transmission line channel within the detection period is determined to meet the requirements, and a normal frequency signal is generated.

[0032] If the danger coefficient is greater than or equal to the danger threshold, it is determined that the lightning threat frequency of the power transmission line channel within the detection period does not meet the requirements, and a frequency anomaly signal is generated.

[0033] The second aspect of this application provides a lightning location system for power transmission line corridors, comprising:

[0034] The lightning detection module is used to divide the detection cycle into several detection periods, divide the power transmission line channel into several sub-channels, acquire lightning current data, lightning current steepness data, and impulse overvoltage data of each sub-channel during the detection period, and calculate the lightning coefficient of each sub-channel during the detection period; by comparing the lightning coefficient of each sub-channel with the lightning threshold during the detection period, the lightning characteristics of each sub-channel during the detection period are determined, and the lightning characteristics of each sub-channel during the detection period are sent to the positioning management platform.

[0035] The positioning management platform is used to send the lightning characteristics of each sub-channel during the detection period to the coverage analysis module and the frequency monitoring module;

[0036] The coverage analysis module is used to calculate the ratio of the number of subchannels with dangerous lightning characteristics to the total number of subchannels during the detection period, thus obtaining the coverage coefficient for the detection period; determine safe periods based on the coverage coefficient of the detection period, calculate the ratio of the number of all safe periods to the total number of detection periods, thus obtaining the safety coefficient; determine whether there is an overall lightning threat to the transmission line channel during the detection period by comparing the safety coefficient with a safety threshold, and send an overall early warning signal to the positioning management platform when it is determined that there is an overall lightning threat to the transmission line channel during the detection period, so that the positioning management platform sends a frequency monitoring command to the frequency monitoring module;

[0037] The frequency monitoring module is used to calculate the ratio of the number of detection periods where the lightning characteristics are dangerous to the total number of detection periods in each sub-channel, thereby obtaining the frequency coefficient of each sub-channel; by comparing the frequency coefficient of each sub-channel with the frequency threshold, it determines whether each sub-channel is a dangerous channel; based on the ratio of the number of dangerous channels to the total number of sub-channels, it determines whether the lightning threat frequency of the transmission line channel meets the requirements, acquires the frequency signal, and sends the frequency signal to the positioning management platform, so that the positioning management platform sends the frequency signal to the mobile terminal of the management personnel.

[0038] Optionally, the lightning coefficient of each sub-channel during the detection period is calculated, including:

[0039] The lightning current data of each sub-channel during the detection period are weighted by the current coefficient to obtain the current weighted value of each sub-channel during the detection period.

[0040] The steepness coefficient is used to weight the lightning current steepness data of each sub-channel during the detection period to obtain the steepness weighted value of each sub-channel during the detection period.

[0041] The voltage coefficient is used to weight the impulse overvoltage data of each sub-channel during the detection period to obtain the voltage weighted value of each sub-channel during the detection period.

[0042] The current weighted value, steepness weighted value, and voltage weighted value of each sub-channel during the detection period are summed to obtain the lightning coefficient of each sub-channel during the detection period.

[0043] Wherein, the current coefficient is greater than the steepness coefficient, and the steepness coefficient is greater than the voltage coefficient.

[0044] Optionally, the lightning threat frequency of the transmission line corridor is determined based on the ratio of the number of dangerous corridors to the number of all sub-corridors to determine whether the requirements are met, and the frequency signal is obtained, including:

[0045] Calculate the ratio of the number of dangerous channels to the number of all sub-channels to obtain the danger coefficient of the power transmission line channel.

[0046] Compare the magnitude of the risk factor with the risk threshold;

[0047] If the danger coefficient is less than the danger threshold, it is determined that the lightning threat frequency of the power transmission line channel within the detection period meets the requirements, and a normal frequency signal is generated.

[0048] If the danger coefficient is greater than or equal to the danger threshold, it is determined that the lightning threat frequency of the power transmission line channel within the detection period does not meet the requirements, and a frequency anomaly signal is generated.

[0049] A third aspect of this application provides an electronic device, the device including a processor and a memory;

[0050] The memory is used to store program code and transmit the program code to the processor;

[0051] The processor is used to execute the lightning location method for power transmission line channels according to the instructions in the program code, as described in the first aspect.

[0052] The fourth aspect of this application provides a computer-readable storage medium for storing program code, which, when executed by a processor, implements the lightning location method for power transmission line channels as described in any of the first aspects.

[0053] As can be seen from the above technical solutions, this application has the following advantages:

[0054] The lightning location method for power transmission line channels provided in this application can perform lightning monitoring and analysis on power transmission line channels. By dividing the data into time periods and road segments, the lightning parameters of sub-channels are collected and analyzed in each detection period. The lightning coefficient is then used to analyze the lightning threat level and frequency of sub-channels in the detection period. This method can analyze lightning characteristics based on timelines and power transmission lines, thus improving the accuracy of lightning monitoring results. Attached Figure Description

[0055] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0056] Figure 1A flowchart illustrating a lightning location method for a power transmission line corridor provided in this application embodiment;

[0057] Figure 2 This is a schematic diagram of a lightning location system for a power transmission line channel provided in an embodiment of this application. Detailed Implementation

[0058] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.

[0059] For easier understanding, please refer to Figure 1 This application provides a method for lightning location of power transmission line corridors, including:

[0060] Step 110: Divide the detection cycle into several detection periods, divide the power transmission line channel into several sub-channels, obtain the lightning current data, lightning current steepness data and impulse overvoltage data of each sub-channel during the detection period, and calculate the lightning coefficient of each sub-channel during the detection period.

[0061] The detection period T is divided into N detection time intervals t, where T = {t1, t2, ..., t} j ,...,t N The power transmission line channel L is divided into M sub-channels l, where L = {l1, l2, ..., l...} i ,...,l M}. Obtain each sub-channel l i During the detection period t j The data includes lightning current data DL (i.e., the lightning current amplitude when a lightning strike occurs in the sub-channel during the detection period), lightning current steepness data DD (i.e., the lightning current steepness when a lightning strike occurs in the sub-channel during the detection period), and impulse overvoltage data DY (i.e., the impulse overvoltage when a lightning strike occurs in the sub-channel during the detection period).

[0062] According to each sub-channel l i During the detection period t j The lightning current data DL, lightning current steepness data DD, and impulse overvoltage data DY within the data are used to calculate the lightning coefficient of each sub-channel during the detection period. Specifically:

[0063] The lightning current data DL of each sub-channel during the detection period are weighted by the current coefficient α1 to obtain the current weighted value of each sub-channel during the detection period. ;

[0064] The steepness coefficient α2 is used to weight the lightning current steepness data DD of each sub-channel during the detection period to obtain the steepness weighted value of each sub-channel during the detection period. ;

[0065] The voltage overvoltage data DY of each sub-channel during the detection period are weighted by the voltage coefficient α3 to obtain the voltage weighted value of each sub-channel during the detection period. ;

[0066] The lightning coefficient of each sub-channel during the detection period is obtained by summing the current-weighted value, steepness-weighted value, and voltage-weighted value of each sub-channel. ;

[0067] Among them, the current coefficient is greater than the steepness coefficient, and the steepness coefficient is greater than the voltage coefficient, that is, α1>α2>α3>1, where α1, α2 and α3 are all proportional coefficients.

[0068] Step 120: By comparing the lightning coefficient and lightning threshold of each sub-channel during the detection period, determine the lightning characteristics of each sub-channel during the detection period.

[0069] Compare each sub-channel l i During the detection period t j Lightning coefficient LD within ij With lightning threshold LD max Size;

[0070] If the lightning coefficient LD ij Less than the lightning threshold LD max Then determine the corresponding sub-channel l i During the detection period t j There is no lightning threat, so the corresponding sub-channel l i During the detection period t j Lightning characteristics F within ij Marked as safe;

[0071] If the lightning coefficient LD ij Greater than or equal to the lightning threshold LD max Then determine the corresponding sub-channel l i During the detection period t j The internal area is subject to lightning strikes; the corresponding sub-channel l i During the detection period t j Lightning characteristics F within ij Marked as dangerous.

[0072] Lightning monitoring and analysis are conducted on power transmission line corridors. Lightning parameters of sub-channels are collected and analyzed during each detection period by dividing the corridor into time periods and road segments. Multiple lightning parameters are comprehensively analyzed and calculated to obtain the lightning coefficient, which is then used to provide feedback on the lightning threat level of the sub-channel during the detection period.

[0073] Step 130: Calculate the ratio of the number of subchannels with dangerous lightning characteristics to the number of all subchannels during the detection period to obtain the coverage coefficient for the detection period.

[0074] Calculate the detection period t j The ratio of the number of subchannels marked as dangerous by lightning characteristics to the number of all subchannels within the range (j=1,2,...,N) yields the detection time period t. j Coverage factor f j .

[0075] Step 140: Determine the safe time period by the coverage coefficient of the detection period, calculate the ratio of the number of all safe time periods to the number of all detection time periods, and obtain the safety coefficient.

[0076] Comparison detection period t j Coverage factor f j With coverage threshold f max Size;

[0077] If the coverage coefficient f j Less than the coverage threshold f max If the lightning threat coverage level of the corresponding detection area meets the requirements, then the corresponding detection period t is determined. j Mark as a safe period;

[0078] If the coverage coefficient f j Greater than or equal to the coverage threshold f max If the lightning threat coverage of the corresponding detection area does not meet the requirements, the corresponding detection period t will be changed. j Marked as a dangerous period;

[0079] The safety factor is obtained by calculating the ratio of the number of all safe periods to the number of all detection periods.

[0080] Step 150: By comparing the size of the safety factor and the safety threshold, determine whether there is an overall lightning threat to the transmission line channel during the detection period.

[0081] If the safety factor is less than the safety threshold, it is determined that there is an overall lightning threat to the transmission line channel L within the detection period T. At this time, an overall early warning signal can be generated and sent to the mobile terminal of the management personnel.

[0082] If the safety factor is greater than or equal to the safety threshold, it is determined that there is no overall lightning threat to the transmission line channel L within the detection period T. At this time, an overall safety signal can be generated and sent to the mobile terminal of the management personnel.

[0083] The overall lightning threat of power transmission line corridors is analyzed. By analyzing the proportion of safe periods within the detection period, a safety factor is obtained. The safety factor is then used to provide feedback on the overall lightning threat of power transmission line corridors within the detection period, and an early warning is issued when the overall lightning threat is abnormal.

[0084] Step 160: If there is an overall lightning threat to the transmission line channel within the detection period, calculate the ratio of the number of dangerous detection periods to the total number of detection periods for each sub-channel, and obtain the frequency coefficient of each sub-channel.

[0085] If the transmission line channel L of the power transmission project has an overall lightning threat within the detection period T, then the values ​​of each sub-channel l are further calculated. i Lightning characteristics F ij The dangerous detection period t j The ratio of the number of detections to the number of detection periods is used to obtain the value of each sub-channel l. i frequency coefficient P i .

[0086] Step 170: By comparing the frequency coefficients of each sub-channel with the frequency threshold, determine whether each sub-channel is a dangerous channel.

[0087] If the frequency coefficient P i Less than the frequency threshold P max Then determine the corresponding sub-channel l i If the lightning threat frequency during the detection period meets the requirements, the corresponding sub-channel l i Marked as a safe passage; if the frequency coefficient P i Greater than or equal to the frequency threshold P max Then determine the corresponding sub-channel l i If the lightning threat frequency during the detection period does not meet the requirements, the corresponding sub-channel l will be... i Marked as a dangerous channel. Frequency coefficients are used to identify whether a sub-channel is dangerous, thus enabling lightning location of power transmission line channels. Dangerous channel information can be sent to management personnel's mobile terminals for lightning hazard warnings.

[0088] Step 180: Determine whether the lightning threat frequency of the transmission line channel meets the requirements based on the ratio of the number of dangerous channels to all sub-channels, obtain the frequency signal, and send the frequency signal to the mobile terminal of the management personnel.

[0089] Calculate the ratio of the number of dangerous channels to the number of all sub-channels to obtain the danger coefficient of the transmission line channel;

[0090] Compare the magnitudes of the risk factor and the risk threshold;

[0091] If the risk factor is less than the risk threshold, the lightning threat frequency of the power transmission line channel within the detection period is determined to meet the requirements, a normal frequency signal is generated and sent to the mobile terminal of the management personnel.

[0092] If the risk factor is greater than or equal to the risk threshold, it is determined that the lightning threat frequency of the power transmission line channel within the detection period does not meet the requirements, a frequency anomaly signal is generated and sent to the mobile terminal of the management personnel.

[0093] The frequency of lightning threats to power transmission line corridors is monitored and analyzed. The frequency coefficient is calculated by the ratio of safe periods to detection periods. The frequency coefficient is then used to monitor the lightning threat frequency of sub-channels during the detection period and to issue early warnings when the lightning threat frequency of power transmission line corridors is abnormal during the detection period.

[0094] The lightning location method for power transmission line channels provided in this application can perform lightning monitoring and analysis on power transmission line channels. By dividing the data into time periods and road segments, the lightning parameters of sub-channels are collected and analyzed in each detection period. The lightning coefficient is then used to analyze the lightning threat level and frequency of sub-channels in the detection period. This method can analyze lightning characteristics based on timelines and power transmission lines, thus improving the accuracy of lightning monitoring results.

[0095] The above is an embodiment of a lightning location method for a power transmission line corridor provided by this application. The following is an embodiment of a lightning location system for a power transmission line corridor provided by this application.

[0096] Please check Figure 2 This application provides a lightning location system for power transmission line corridors, comprising:

[0097] The lightning detection module is used to divide the detection cycle into several detection periods, divide the transmission line channel into several sub-channels, acquire lightning current data, lightning current steepness data, and impulse overvoltage data of each sub-channel during the detection period, and calculate the lightning coefficient of each sub-channel during the detection period; by comparing the lightning coefficient of each sub-channel with the lightning threshold during the detection period, the lightning characteristics of each sub-channel during the detection period are determined, and the lightning characteristics of each sub-channel during the detection period are sent to the positioning management platform.

[0098] The positioning management platform is used to send the lightning characteristics of each sub-channel during the detection period to the coverage analysis module and the frequency monitoring module;

[0099] The coverage analysis module is used to calculate the ratio of the number of subchannels with dangerous lightning characteristics to the total number of subchannels during the detection period, thus obtaining the coverage coefficient for the detection period. The coverage coefficient is used to determine safe periods, and the ratio of the number of all safe periods to the total number of detection periods is calculated to obtain the safety coefficient. By comparing the safety coefficient with a safety threshold, it is determined whether there is an overall lightning threat to the transmission line channel during the detection period. If an overall lightning threat is determined to exist, an overall early warning signal is sent to the positioning management platform, which then sends a frequency monitoring command to the frequency monitoring module.

[0100] The frequency monitoring module is used to calculate the ratio of the number of detection periods where lightning characteristics are dangerous to the total number of detection periods in each sub-channel, thus obtaining the frequency coefficient of each sub-channel. By comparing the frequency coefficient of each sub-channel with the frequency threshold, it determines whether each sub-channel is a dangerous channel. Based on the ratio of dangerous channels to all sub-channels, it determines whether the lightning threat frequency of the transmission line channel meets the requirements, acquires the frequency signal, and sends the frequency signal to the positioning management platform, which then sends the frequency signal to the mobile terminal of the management personnel.

[0101] The lightning detection module is used to perform lightning detection and analysis on power transmission line channels. Specifically, it includes: generating a detection period, dividing the detection period into several detection time periods, dividing the power transmission line channel into several sub-channels, and acquiring the lightning current data DL, lightning current steepness data DD, and impulse overvoltage data DY of the sub-channels within the detection time periods; and using formulas... The lightning coefficient LD of the sub-channel during the detection period is calculated, where α1, α2, and α3 are proportionality coefficients, and α1>α2>α3>1; the lightning threshold LD is obtained through the storage module. max The lightning coefficient LD of the sub-channel during the detection period is compared with the lightning threshold LD. max Comparison: If the lightning coefficient LD is less than the lightning threshold LD max If the lightning coefficient LD is greater than or equal to the lightning threshold LD, then the subchannel is determined to be free of lightning threats during the detection period, and the lightning characteristics of the subchannel during the detection period are marked as safe; max If the subchannel is determined to be threatened by lightning during the detection period, the lightning characteristics of the subchannel during the detection period are marked as dangerous; the lightning characteristics of all subchannels during the detection period are sent to the positioning management platform, and the positioning management platform sends the lightning characteristics to the coverage analysis module and the frequency monitoring module after receiving them.

[0102] The coverage analysis module is used to analyze the overall lightning threat of transmission line corridors. Specifically, it includes: calculating the ratio of the number of sub-channels marked as dangerous by lightning characteristics to the total number of sub-channels during the detection period, obtaining a coverage coefficient; obtaining a coverage threshold through the storage module, and comparing the coverage coefficient with the coverage threshold: if the coverage coefficient is less than the coverage threshold, the lightning threat coverage level of the detection area is determined to meet the requirements, and the corresponding detection period is marked as a safe period; if the coverage coefficient is greater than or equal to the coverage threshold, the lightning threat coverage level of the detection area is determined to not meet the requirements, and the corresponding detection period is marked as a dangerous period; at the end of the detection cycle, the ratio of the number of safe periods to the number of detection periods is calculated, obtaining a safety coefficient. The system calculates the overall safety coefficient and obtains the safety threshold through the storage module. It then compares the safety coefficient with the safety threshold: if the safety coefficient is less than the safety threshold, it determines that the transmission line corridor within the detection period is under overall lightning threat, generates an overall warning signal, and sends it to the location management platform. Upon receiving the overall warning signal, the location management platform sends it to the mobile terminal of the management personnel. If the safety coefficient is greater than or equal to the safety threshold, it determines that the transmission line corridor within the detection period is not under overall lightning threat, generates an overall safety signal, and sends it to the location management platform. Upon receiving the overall safety signal, the location management platform sends it to the mobile terminal of the management personnel.

[0103] The frequency monitoring module is used to monitor and analyze the lightning threat frequency of transmission line channels. Specifically, it includes: when the lightning characteristics of a sub-channel are marked as dangerous, the corresponding detection period is marked as the marked period for the sub-channel; the ratio of the marked period to the detection period is calculated to obtain the frequency coefficient of the sub-channel; the frequency threshold is obtained through the storage module; the frequency coefficient is compared with the frequency threshold; if the frequency coefficient is less than the frequency threshold, the lightning threat frequency of the sub-channel during the detection period is determined to meet the requirements, and the corresponding sub-channel is marked as a safe channel; if the frequency coefficient is greater than or equal to the frequency threshold, the lightning threat frequency of the sub-channel during the detection period is determined to not meet the requirements, and the corresponding sub-channel is marked as a dangerous channel; the dangerous channel is then calculated. The ratio of the number of channels to the number of all sub-channels is used to obtain the hazard coefficient of the transmission line channel. The hazard coefficient is compared with the hazard threshold. If the hazard coefficient is less than the hazard threshold, it is determined that the lightning threat frequency of the transmission line channel during the detection period meets the requirements, a normal frequency signal is generated and sent to the positioning management platform, which then forwards the signal to the mobile terminal of the management personnel. If the hazard coefficient is greater than or equal to the hazard threshold, it is determined that the lightning threat frequency of the transmission line channel during the detection period does not meet the requirements, a frequency abnormal signal is generated and sent to the positioning management platform, which then forwards the signal to the mobile terminal of the management personnel.

[0104] In this embodiment of the application, a lightning detection module can be used to monitor and analyze lightning on the transmission line channel of a power transmission project. By dividing the time period and the road segment, the lightning parameters of the sub-channel in each detection period are collected and analyzed. The lightning coefficient is obtained by comprehensively analyzing and calculating multiple lightning parameters, and then the lightning coefficient is used to provide feedback on the lightning threat level of the sub-channel in the detection period.

[0105] The coverage analysis module can analyze the overall lightning threat of power transmission line corridors. By analyzing the proportion of safe periods within the detection period, a safety factor is obtained. The safety factor is then used to provide feedback on the overall lightning threat of power transmission line corridors within the detection period, and an early warning is issued when the overall lightning threat is abnormal.

[0106] The frequency monitoring module can monitor and analyze the lightning threat frequency of power transmission line channels. By calculating the ratio of the number of marked time periods to the number of detection time periods, the frequency coefficient is obtained. The frequency coefficient is then used to monitor the lightning threat frequency of sub-channels during the detection period, and an early warning is issued when the lightning threat frequency of the power transmission line channel is abnormal during the detection period.

[0107] This application also provides an electronic device, which includes a processor and a memory;

[0108] The memory is used to store program code and transfer the program code to the processor;

[0109] The processor is used to execute the lightning location method for power transmission line channels in the foregoing method embodiments according to the instructions in the program code.

[0110] This application also provides a computer-readable storage medium for storing program code, which, when executed by a processor, implements the lightning location method for power transmission line channels in the aforementioned method embodiments.

[0111] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0112] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such process, method, product, or apparatus.

[0113] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0114] In the several embodiments provided in this application, it should be understood that the disclosed apparatus and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.

[0115] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0116] Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0117] If the integrated unit is implemented as 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 technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions for executing all or part of the steps of the methods described in the various embodiments of this application through a computer device (which may be a personal computer, server, or network device, etc.). The aforementioned storage medium includes: USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, optical disks, and other media capable of storing program code.

[0118] The above-described embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A method for locating lightning strikes along a power transmission line corridor, characterized in that, include: The detection cycle is divided into several detection periods, and the transmission line channel is divided into several sub-channels. Lightning current data, lightning current steepness data, and impulse overvoltage data of each sub-channel are obtained during the detection period, and the lightning coefficient of each sub-channel during the detection period is calculated. By comparing the lightning coefficient and lightning threshold of each sub-channel during the detection period, the lightning characteristics of each sub-channel during the detection period are determined. The coverage coefficient for the detection period is obtained by calculating the ratio of the number of subchannels with dangerous lightning characteristics to the total number of subchannels during the detection period. The safe time period is determined by the coverage coefficient of the detection period, and the safety coefficient is obtained by calculating the ratio of the number of all safe time periods to the number of all detection time periods. By comparing the safety factor with the safety threshold, it is determined whether there is an overall lightning threat to the power transmission line corridor during the detection period; If there is an overall lightning threat to the transmission line channel during the detection period, the ratio of the number of detection periods in which the lightning characteristics of each sub-channel are dangerous to the total number of detection periods is calculated to obtain the frequency coefficient of each sub-channel. By comparing the frequency coefficient of each sub-channel with the frequency threshold, it is determined whether each sub-channel is a dangerous channel; The lightning threat frequency of the power transmission line channel is determined based on the ratio of the number of dangerous channels to all sub-channels. The frequency signal is then acquired and sent to the mobile terminal of the management personnel.

2. The lightning location method for power transmission line corridors according to claim 1, characterized in that, Calculate the lightning coefficient of each sub-channel during the detection period, including: The lightning current data of each sub-channel during the detection period are weighted by the current coefficient to obtain the current weighted value of each sub-channel during the detection period. The steepness coefficient is used to weight the lightning current steepness data of each sub-channel during the detection period to obtain the steepness weighted value of each sub-channel during the detection period. The voltage coefficient is used to weight the impulse overvoltage data of each sub-channel during the detection period to obtain the voltage weighted value of each sub-channel during the detection period. The current weighted value, steepness weighted value, and voltage weighted value of each sub-channel during the detection period are summed to obtain the lightning coefficient of each sub-channel during the detection period. Wherein, the current coefficient is greater than the steepness coefficient, and the steepness coefficient is greater than the voltage coefficient.

3. The lightning location method for power transmission line corridors according to claim 1, characterized in that, By comparing the lightning coefficient and lightning threshold of each sub-channel during the detection period, the lightning characteristics of each sub-channel during the detection period are determined, including: Compare the lightning coefficient and lightning threshold of each sub-channel during the detection period; If the lightning coefficient is less than the lightning threshold, it is determined that the corresponding sub-channel does not pose a lightning threat during the detection period, and the lightning characteristics of the corresponding sub-channel during the detection period are marked as safe. If the lightning coefficient is greater than or equal to the lightning threshold, the corresponding sub-channel is determined to have a lightning threat during the detection period, and the lightning characteristics of the corresponding sub-channel during the detection period are marked as dangerous.

4. The lightning location method for power transmission line corridors according to claim 1, characterized in that, Safe periods are determined by the coverage coefficient during the detection period, including: Compare the coverage coefficient with the coverage threshold during the detection period; If the coverage coefficient is less than the coverage threshold, it is determined that the lightning threat coverage of the corresponding detection area meets the requirements, and the corresponding detection period is marked as a safe period. If the coverage coefficient is greater than or equal to the coverage threshold, it is determined that the lightning threat coverage of the corresponding detection area does not meet the requirements, and the corresponding detection period is marked as a dangerous period.

5. The lightning location method for power transmission line corridors according to claim 1, characterized in that, Determine whether the lightning threat frequency of the power transmission line channel meets the requirements based on the ratio of the number of dangerous channels to all sub-channels, and obtain the frequency signal, including: Calculate the ratio of the number of dangerous channels to the number of all sub-channels to obtain the danger coefficient of the power transmission line channel. Compare the magnitude of the risk factor with the risk threshold; If the danger coefficient is less than the danger threshold, then the lightning threat frequency of the power transmission line channel within the detection period is determined to meet the requirements, and a normal frequency signal is generated. If the danger coefficient is greater than or equal to the danger threshold, it is determined that the lightning threat frequency of the power transmission line channel within the detection period does not meet the requirements, and a frequency anomaly signal is generated.

6. A lightning location system for power transmission line corridors, characterized in that, include: The lightning detection module is used to divide the detection cycle into several detection periods, divide the transmission line channel into several sub-channels, acquire lightning current data, lightning current steepness data and impulse overvoltage data of each sub-channel during the detection period, and calculate the lightning coefficient of each sub-channel during the detection period. By comparing the lightning coefficient and lightning threshold of each sub-channel during the detection period, the lightning characteristics of each sub-channel during the detection period are determined, and the lightning characteristics of each sub-channel during the detection period are sent to the positioning management platform. The positioning management platform is used to send the lightning characteristics of each sub-channel during the detection period to the coverage analysis module and the frequency monitoring module; The coverage analysis module is used to calculate the ratio of the number of subchannels with dangerous lightning characteristics to the total number of subchannels during the detection period, thereby obtaining the coverage coefficient for the detection period; the coverage coefficient is used to determine safe periods, and the ratio of the number of all safe periods to the total number of detection periods is calculated to obtain the safety coefficient. By comparing the safety factor with the safety threshold, it is determined whether there is an overall lightning threat to the transmission line channel within the detection period. When it is determined that there is an overall lightning threat to the transmission line channel within the detection period, an overall early warning signal is sent to the positioning management platform, which then sends a frequency monitoring command to the frequency monitoring module. The frequency monitoring module is used to calculate the ratio of the number of detection periods where the lightning characteristics of each sub-channel are dangerous to the number of all detection periods, and obtain the frequency coefficient of each sub-channel; by comparing the frequency coefficient of each sub-channel with the frequency threshold, it is determined whether each sub-channel is a dangerous channel. Based on the ratio of the number of dangerous channels to all sub-channels, determine whether the lightning threat frequency of the power transmission line channel meets the requirements, acquire the frequency signal, and send the frequency signal to the positioning management platform, so that the positioning management platform sends the frequency signal to the mobile terminal of the management personnel.

7. The lightning location system for power transmission line corridors according to claim 6, characterized in that, Calculate the lightning coefficient of each sub-channel during the detection period, including: The lightning current data of each sub-channel during the detection period are weighted by the current coefficient to obtain the current weighted value of each sub-channel during the detection period. The steepness coefficient is used to weight the lightning current steepness data of each sub-channel during the detection period to obtain the steepness weighted value of each sub-channel during the detection period. The voltage coefficient is used to weight the impulse overvoltage data of each sub-channel during the detection period to obtain the voltage weighted value of each sub-channel during the detection period. The current weighted value, steepness weighted value, and voltage weighted value of each sub-channel during the detection period are summed to obtain the lightning coefficient of each sub-channel during the detection period. Wherein, the current coefficient is greater than the steepness coefficient, and the steepness coefficient is greater than the voltage coefficient.

8. The lightning location system for power transmission line corridors according to claim 6, characterized in that, Determine whether the lightning threat frequency of the power transmission line channel meets the requirements based on the ratio of the number of dangerous channels to all sub-channels, and obtain the frequency signal, including: Calculate the ratio of the number of dangerous channels to the number of all sub-channels to obtain the danger coefficient of the power transmission line channel. Compare the magnitude of the risk factor with the risk threshold; If the danger coefficient is less than the danger threshold, it is determined that the lightning threat frequency of the power transmission line channel within the detection period meets the requirements, and a normal frequency signal is generated. If the danger coefficient is greater than or equal to the danger threshold, it is determined that the lightning threat frequency of the power transmission line channel within the detection period does not meet the requirements, and a frequency anomaly signal is generated.

9. An electronic device, characterized in that, The device includes a processor and a memory; The memory is used to store program code and transmit the program code to the processor; The processor is used to execute the lightning location method for power transmission line channels according to any one of claims 1-5, based on the instructions in the program code.

10. A computer-readable storage medium, characterized in that, The computer-readable storage medium is used to store program code, which, when executed by a processor, implements the lightning location method for power transmission line channels according to any one of claims 1-5.

Images