Multi-terminal linkage control method for ice-coating monitoring, storage medium and system

Abstract

This invention discloses a multi-terminal linkage control method, storage medium, and system for icing monitoring, comprising: historical icing alarm information sent by online icing monitoring terminals of multiple transmission line towers and icing alarm information reported by manual observation; statistical analysis of historical tower icing information and concurrent manual observation icing alarm information to identify icing alarm towers with consistent correlation; correlation analysis of the associated online icing monitoring terminals with consistent correlation to obtain video terminals associated with the online icing monitoring terminals according to terrain and range; real-time control of the associated video terminals for image capture; icing identification of the captured images; weighted scoring of icing alarms to obtain the confidence level of the icing alarms; and finally, pushing out icing alarms with a confidence level higher than a threshold. This invention avoids on-site operations by patrol personnel due to false alarms during icing periods, improving the accuracy of icing alarms.

Description

Technical Field

[0001] This invention belongs to the field of electrical engineering and relates to icing alarm for transmission lines, particularly a multi-terminal linkage control method, storage medium and system for icing monitoring. Technical Background

[0002] Icing on transmission lines is a serious problem in winter. With the advancement of smart grid technology, numerous online icing monitoring terminals have been installed. However, the operational status of these terminals can lead to false alarms and missed alarms. Furthermore, threshold-based alarms cannot provide dynamic, real-time alerts based on the specific needs of anti-icing management. To improve the accuracy of terminal alarms during icing periods and fully leverage the value of online icing monitoring terminals, it is necessary to comprehensively identify online icing alarms from transmission lines. This involves combining information from online icing monitoring terminals and video-based online icing monitoring terminals to determine the accuracy of icing alarms. Summary of the Invention

[0003] To address the shortcomings and deficiencies of the existing technologies, this invention aims to provide a multi-terminal linkage control method, storage medium, and system for icing monitoring, which solves problems such as false alarms and missed alarms in traditional online icing monitoring terminals.

[0004] To achieve the above objectives, the present invention provides a multi-terminal linkage control method for icing monitoring, comprising:

[0005] 1) Obtain information from the online monitoring terminal for icing on transmission lines and push the icing information to the system platform;

[0006] 2) Statistically analyze the historical icing information of icing alarm towers and the icing alarm information manually verified and confirmed throughout the province at the same time, and compare the correlation between icing alarm towers;

[0007] 3) Conduct correlation analysis on the online icing monitoring terminals to obtain the associated video terminals according to the terrain and range;

[0008] 4) Perform real-time control of associated video terminals, adjust the video terminal pan-tilt unit, configure inspection tasks, and capture images;

[0009] 5) Perform image recognition on the captured images to obtain the icing status based on the images;

[0010] 6) By weighting and scoring the icing alarms, the confidence level of the icing alarms is obtained, and finally, the icing alarms are pushed out.

[0011] Furthermore, the icing information of the transmission lines pushed to the system platform includes icing alarm information from the online icing monitoring terminal and icing alarm information reported by manual icing observation.

[0012] Furthermore, the historical icing information of the icing alarm towers is statistically analyzed, and the environmental information of the historical icing alarms is compared with the environmental information of the current alarms to filter out the number of historical alarms that meet the environmental requirements; the verified alarm information at the current time is also filtered to filter out the number of alarms that match the altitude, terrain, and environment.

[0013] 1) Online monitoring of icing alarms (year-on-year comparison of icing alarms)

[0014] Comparison range: Online monitoring alarms for icing on the same line tower at different times.

[0015] Screening criteria: Temperature less than 0°C, humidity and wind speed simultaneously meeting a deviation of no more than 50%, and icing ratio greater than 0.3.

[0016] Statistical Dimension: Number of alarms matching year-on-year data (A)

[0017] 2) Manual ice observation and icing alarm (comparison of icing alarms month-on-month)

[0018] Comparison scope: All manually reported alarm information across the entire network on the day the alarm was triggered.

[0019] Selection criteria: Altitude deviation no greater than 10%, consistent terrain, consistent voltage level, consistent conductor type, and temperature, humidity, and wind speed all simultaneously meeting the requirement of deviation no greater than 10%.

[0020] Statistical dimension: Number of alarms that meet the month-on-month comparison criteria (B)

[0021] Furthermore, the range analysis of the line towers alarmed by the online icing monitoring terminal and the line towers for manual icing observation is performed. The analysis is conducted on the icing alarm towers within a 400-meter circular range of the towers, and the associated video terminals within the visible range are formed by combining the terrain and altitude.

[0022] Furthermore, the associated video terminal is remotely controlled to adjust the pan-tilt angle and point it at the alarm target tower conductor; the associated icing terminal is also remotely controlled to shorten the data acquisition cycle.

[0023] Furthermore, the method involves identifying whether the line conductors are covered with ice through image recognition and counting the number C of associated video terminals.

[0024] Furthermore, the final confidence level of the icing alarm is obtained by weighting the confidence levels of online monitoring icing alarms, manual observation icing alarms, and image recognition icing alarms, wherein the range of values ​​is assigned according to the year-on-year and month-on-month number of icing alarms:

[0025] A B C Assignment 0 0 0 0 (0,1] (0,1] (0,1] 0.7 [2,+∞) [2,+∞) [2,+∞) 1

[0026] The final confidence level D = 0.3*A + 0.4*B + 0.3*C.

[0027] The present invention also provides a computer-readable storage medium having a computer program stored thereon, characterized in that the computer program can be executed by a processor to implement the steps of the multi-terminal linkage control method for icing monitoring described in the present invention.

[0028] This invention also provides a multi-terminal linkage control system for icing monitoring, comprising:

[0029] The icing monitoring module is used to acquire icing alarm information of transmission lines, receive icing alarm information reported by online icing monitoring terminals and manual reporting, and store the alarm information on the system platform.

[0030] The icing association module calculates the latitude and longitude coordinates of the towers, takes the icing alarm towers as the analysis objects, and performs GIS range analysis according to a circle with a radius of 500 meters. It then performs association analysis on the online icing monitoring terminals and video icing online monitoring terminals within the range to form a list of associated terminals.

[0031] The terminal control module can remotely control the associated video terminals to adjust the pan-tilt angle and point it at the alarm target tower conductor; it can also remotely control the associated icing terminals to shorten the data acquisition cycle.

[0032] The image icing recognition module classifies the collected images according to the towers and judges whether there is icing through image recognition. If a series of images is judged to have icing, an icing alarm is issued for the line tower (image recognition mark).

[0033] The icing alarm push module aggregates online icing monitoring alarm information, manual icing observation and operating condition information, and icing alarm image recognition information to form the confidence level of icing alarms, and then sends out alarms and broadcasts them on the system platform.

[0034] Compared with the prior art, the beneficial effects of the present invention are:

[0035] (1) By identifying icing alarm information, the false alarms caused by the terminal's own operating status are resolved, thereby improving the accuracy of terminal alarms during the icing period.

[0036] (2) Systematically schedule online monitoring resources for transmission lines, make full use of the effective linkage between video icing online monitoring terminals and icing online monitoring terminals, ensure anti-icing and anti-icing work during icing, and improve the operation and maintenance efficiency of anti-icing and anti-icing. Attached Figure Description

[0037] Figure 1 This is a flowchart of the control method of the present invention.

[0038] Figure 2This is a schematic diagram of the multi-terminal linkage control system for icing monitoring according to the present invention. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to specific embodiments and the accompanying drawings. It should be understood that these descriptions are merely exemplary and not intended to limit the scope of the invention. Furthermore, descriptions of well-known structures and techniques are omitted in the following description to avoid unnecessarily obscuring the concept of the invention.

[0040] Example 1

[0041] like Figure 1 A multi-terminal linkage control method for icing monitoring includes the following steps:

[0042] S101: Obtain icing alarm information from the online icing monitoring terminal, including: icing ratio, equivalent icing thickness, icing time, and iced line towers, as shown in the table below:

[0043] line tower terminal Ice ratio Equivalent icing thickness Ice covering time Line A 1# CC1001 1.6 15mm January 20, 2021

[0044] S102: Statistically analyze the historical icing information of the icing alarm towers, compare the environmental information of the historical icing alarms with the environmental information of the current alarms, and filter out the number of historical alarms that meet the environmental requirements; filter out the number of alarms that match the altitude, terrain and environment based on the verified alarm information at the current time, and calculate the confidence level of the icing alarm.

[0045] 1) Online monitoring icing alarm (comparative icing alarm) screening rules: alarms from the same line tower at different times, with temperature less than 0, humidity and wind speed simultaneously meeting the deviation not exceeding 50%, and icing ratio greater than 0.3.

[0046] Analysis shows that serial numbers 1 and 2 match the current alarm.

[0047] Table: Online Monitoring of Icing Alarms

[0048]

[0049] 2) Manual Icing Alarm Detection (Icing Alarm Comparison) Screening Rules: All manually reported alarm information across the entire network on the alarm day must meet the following criteria: altitude deviation not exceeding 10%, consistent terrain, consistent voltage level, consistent line conductor type, and temperature, humidity, and wind speed deviations not exceeding 10%.

[0050] Analysis shows that serial numbers 1 and 2 match the current alarm.

[0051] Table: Artificial Ice Observation and Icing Warning

[0052]

[0053] The number of icing warnings that met the criteria was 2 year-on-year and 2 month-on-month.

[0054] S103: The range analysis of the line towers alarmed by the online icing monitoring terminal and the line towers for manual icing observation is performed. The analysis is conducted on the icing alarm towers within a 400-meter circular range of the towers, and the associated video terminals within the visible range are formed by combining the terrain and altitude.

[0055] Serial Number line tower type distance 1 Line A 1# Ice monitoring terminal Alarm Terminal 2 Line A 3# Video monitoring terminal 220 meters from the tower 3 Line B 5# Video monitoring terminal 110 meters from the tower 4 Line B 7# Video monitoring terminal 320 meters from the tower

[0056] Based on GIS latitude and longitude analysis, terminals numbered 2, 3, and 4 are within 400 meters of the alarm terminals.

[0057] S104: The associated video terminal is remotely controlled to adjust the pan-tilt angle and point it at the alarm target tower conductor; the associated icing terminal is remotely controlled to shorten the acquisition cycle.

[0058] S105: The method of identifying whether the line conductor is covered with ice through image recognition and statistically analyzing the image recognition ice alarm C.

[0059] Table: Image Recognition Icing Alarm

[0060] Serial Number line tower type distance Ice-recognition status 2 Line A 3# Video monitoring terminal 220 meters from the tower There is ice 3 Line B 5# Video monitoring terminal 110 meters from the tower There is ice 4 Line B 7# Video monitoring terminal 320 meters from the tower No ice cover

[0061] The image recognition terminals 2 and 3 collected data at corresponding locations to identify icing, and the number of icing alarms detected by image recognition was calculated to be 2.

[0062] S106: The icing alarm is weighted and scored based on the confidence level of online monitoring icing alarm, manual observation icing alarm, and image recognition icing alarm to obtain the final confidence level of the icing alarm. The final confidence level D = 0.3*A + 0.4*B + 0.3*C, and the confidence level of the online monitoring terminal for icing is obtained.

[0063] Among them, the number of alarms that met the year-on-year matching criteria (A) was 2, the number of alarms that met the month-on-month matching criteria (B) was 2, and the number of image recognition icing alarms (C) was 2.

[0064] The values ​​of A, B, and C are assigned according to the weighted intervals, namely A:1, B:1, and C:1, respectively. The final confidence level of this alarm is calculated to be 100%.

[0065] A B C Weight 0 0 0 0 (0,1] (0,1] (0,1] 0.7 [2,+∞) [2,+∞) [2,+∞) 1

[0066] Example 2

[0067] like Figure 2 A multi-terminal linkage control system for icing monitoring includes:

[0068] Ice accretion monitoring module: used to acquire ice accretion alarm information of transmission lines, receive ice accretion alarm information reported by online ice accretion monitoring terminals and manual reporting, and store alarm information on the system platform;

[0069] Icing Association Module: Calculates the latitude and longitude coordinates of the towers, takes the icing alarm towers as the analysis object, and performs GIS range analysis according to a circle with a radius of 500 meters. It then performs association analysis on the online icing monitoring terminals and video icing online monitoring terminals within the range to form a list of associated terminals.

[0070] Terminal control module: Remotely controls associated video terminals to adjust the pan-tilt angle and point it at the alarm target tower conductor; remotely controls associated icing terminals to shorten the data acquisition cycle;

[0071] Image icing recognition module: The collected images are classified according to the towers. Through image recognition, it is determined whether there is icing. If a series of images is determined to have icing, an icing alarm is issued for the line tower (image recognition label).

[0072] Icing alarm push module: By aggregating online icing monitoring alarm information, manual icing observation and working condition information, and icing alarm image recognition information, the confidence level of icing alarm is formed, and alarms are issued and broadcast on the system platform.

[0073] It should be understood that the specific embodiments described above are merely illustrative or explanatory of the principles of the invention and do not constitute a limitation thereof. Therefore, any modifications, equivalent substitutions, improvements, etc., made without departing from the spirit and scope of the invention should be included within the protection scope of the invention. Furthermore, the appended claims are intended to cover all variations and modifications falling within the scope and boundaries of the appended claims, or equivalent forms of such scope and boundaries.

Claims

1. A multi-terminal linkage control method for icing monitoring, characterized in that, Includes the following steps: Step 1: Obtain icing information of transmission line towers. The icing information of transmission line towers includes historical icing alarm information sent by online icing monitoring terminals of multiple transmission line towers and icing alarm information reported by manual icing observation. Step 2: By statistically analyzing the historical tower icing information sent by the online icing monitoring terminal and the icing alarm information reported by manual observation at the same time, the correlation of these icing alarm towers is compared to obtain the icing alarm towers with consistent correlation. Step 3: Perform correlation analysis on the online icing monitoring terminals associated with the icing alarm towers that have consistent correlation, and obtain the video terminals of the associated online icing monitoring terminals according to the terrain and range; including: performing range analysis on the line towers that alarm the online icing monitoring terminals and the line towers that are manually observed for icing, analyzing the icing alarm towers within a 400-meter circular range of the towers, and forming associated video terminals within the visible range by combining the terrain and altitude; Step 4: Perform real-time control of the associated video terminals, adjust the pan-tilt angle of the video terminals to point at the alarm target tower conductor, remotely control the associated icing terminals to shorten the acquisition cycle; configure inspection tasks and take images. Step 5: Perform image recognition on the captured images to obtain the icing status based on the images; Step 6: Calculate the confidence level of icing alarms based on online monitoring, manual observation, and image recognition to obtain the final confidence level of the icing alarm. Finally, push out icing alarms that meet the confidence level higher than a threshold.

2. The control method according to claim 1, characterized in that: The historical icing information of the poles with icing alarms is statistically analyzed, including: (1) Compare the environmental information of historical icing alarms with the environmental information of current alarms, and select the number of historical alarms that meet the environmental requirements; (2) Filter the verified alarm information at the current time to find alarms that match the altitude, terrain and environment.

3. The control method according to claim 1, characterized in that: A year-on-year analysis of historical icing alarm information sent by online monitoring terminals for icing on multiple transmission line towers was conducted, including: Comparison scope: Online monitoring alarms for icing on the same line tower at different times; Screening criteria: Temperature below 0℃, humidity and wind speed with deviations not exceeding 50%, and icing ratio greater than 0.3; Statistical dimension: Number of alarms that match the same period last year (A).

4. The control method according to claim 3, characterized in that: A comparative analysis of icing alarm information reported by manual ice observation was conducted, including: Comparison scope: All manually reported alarm information across the entire network on the day the alarm was triggered; Selection criteria: Altitude deviation not exceeding 10%, consistent terrain, consistent voltage level, consistent conductor type, and temperature, humidity, and wind speed all simultaneously meeting the requirement of deviation not exceeding 10%; Statistical dimension: Number of alarms that meet the month-on-month comparison criteria (B).

5. The control method according to claim 4, characterized in that, In step 5: Image recognition is used to identify whether the line conductors are covered with ice, and the number of image recognition ice alarms (C) is counted.

6. The control method according to claim 5, characterized in that: Assign range values ​​based on the year-on-year and month-on-month comparison of the number of ice accretion warnings: ， The final confidence level D = 0.3*A + 0.4*B + 0.3*C.

7. A computer-readable storage medium having a computer program stored thereon, characterized in that, The computer program can be executed by a processor to implement the steps of the multi-terminal linkage control method for icing monitoring as described in any one of claims 1-6.

8. A multi-terminal linkage control system for icing monitoring, characterized in that, The system includes the computer-readable storage medium as described in claim 7, wherein the system comprises: Ice accretion monitoring module: used to acquire ice accretion alarm information of transmission lines, receive ice accretion alarm information reported by online ice accretion monitoring terminals and manual reporting, and store alarm information on the system platform; Icing Association Module: Calculates the latitude and longitude coordinates of the towers, takes the icing alarm towers as the analysis object, and performs GIS range analysis according to a circle with a radius of 500 meters. It then performs association analysis on the online icing monitoring terminals and video icing online monitoring terminals within the range to form a list of associated terminals. Terminal control module: Remotely controls associated video terminals to adjust the pan-tilt angle and point it at the alarm target tower conductor; remotely controls associated icing terminals to shorten the data acquisition cycle; Image icing recognition module: Classifies the collected images according to the tower, and judges whether there is icing through image recognition. If a column of images is judged to have icing, an icing alarm is issued for the line tower. Icing alarm push module: By aggregating online icing monitoring alarm information, manual icing observation and working condition information, and icing alarm image recognition information, the confidence level of icing alarm is formed, and alarms are issued and broadcast on the system platform.

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