Power transmission management based transmission line operating condition monitoring system

Abstract

This invention discloses a power transmission line operation status monitoring system based on power transmission management, belonging to the field of power transmission line monitoring technology. It solves the technical problem in the prior art that the power transmission line cannot perform hidden danger analysis and early warning during normal operation. Specifically, the operation hidden danger monitoring unit acquires vibration and galloping data of the power transmission line, and infers whether there are operation hidden dangers in the power transmission line based on data analysis. After the operation hidden danger monitoring is qualified, the line operation evaluation unit collects the line operation evaluation information, calculates the line operation evaluation coefficient, infers whether the line transmission operation status is qualified based on coefficient comparison, and performs targeted line control based on the signals generated by data analysis through the line monitoring platform.

Description

Technical Field

[0001] This invention relates to the field of power transmission line monitoring technology, specifically to a power transmission line operation status monitoring system based on power transmission management. Background Technology

[0002] In recent years, with the improvement of living standards, the power industry, as a pioneer, has achieved rapid development, with the installed capacity of the system and the voltage level of transmission lines continuously increasing. With the increase in the installed capacity of the power system, the increase in the operating voltage level, and the expansion of the power grid coverage, on the one hand, the reliability and economy of operation have been improved, but on the other hand, the scope of system operation failures and their impact on industrial and agricultural production and people's lives have also become increasingly larger.

[0003] The invention patent with announcement number CN118539596A discloses a monitoring system and operation method for the operation status of overhead power transmission lines, which relates to the field of line detection. The integrated power control system of the data center extracts and processes the power information of the power consumption end through a data extraction module and a data processing module. The processed data is monitored in real time through a data status monitoring module. For abnormal data, the data anomaly diagnosis module is used to diagnose the data and determine the cause of the anomaly.

[0004] However, it is impossible to perform real-time impact analysis on the power transmission line itself, and it is impossible to continuously monitor and analyze the real-time impact after ensuring that the line is in good condition. In addition, it is impossible to perform hazard analysis and early warning on the line during normal operation and transmission, which reduces the feasibility of power transmission.

[0005] To address the aforementioned technical shortcomings, a solution is proposed. Summary of the Invention

[0006] The purpose of this invention is to solve the problems mentioned above by proposing a power transmission line operation status monitoring system based on power transmission management.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] The power transmission line operation status monitoring system based on power transmission management includes a line monitoring platform, which is connected to an online line monitoring unit, a real-time impact monitoring unit, an operation hazard monitoring unit, and a line operation assessment unit.

[0009] The online monitoring unit acquires the operating time of the power transmission line and selects any time at the middle or end of the operating time, and constructs the selected time as the online monitoring time. Through online data acquisition and analysis, it infers whether the online monitoring is qualified. If qualified, the real-time impact monitoring unit performs real-time impact analysis on the power transmission line's transmission period, acquires line change information and line impact information, and infers whether the real-time impact analysis is normal based on information comparison.

[0010] After the impact analysis is normal, the operation hazard monitoring unit obtains the vibration impact data and galloping impact data of the power transmission line. Based on the data analysis, it infers whether there are any operation hazards in the power transmission line. After the operation hazard monitoring is qualified, the line operation assessment unit collects the line operation assessment information, calculates the line operation assessment coefficient, infers whether the line transmission operation status is qualified based on the coefficient comparison, and performs targeted line control based on the signals generated by the data analysis through the line monitoring platform.

[0011] In a preferred embodiment of the present invention, the operation process of the online line monitoring unit is as follows:

[0012] When the power transmission line is acquired, the power transmission loss fluctuation trend of the power transmission line at adjacent online monitoring times is obtained. If the power transmission loss fluctuation trend shows a continuous increasing trend and the actual power transmission loss exceeds the set threshold, an insulation abnormality signal is generated; if the power transmission loss fluctuation trend shows a fluctuating trend and the actual power transmission loss exceeds the set threshold, a transmission abnormality signal is generated.

[0013] If the power loss during transmission fluctuates back and forth, and the actual power loss during transmission does not exceed the set threshold, then the pollution information on the surface of the power transmission line at the time of online monitoring will be collected. The pollution information includes the pollution area on the line surface and the influence value of the conductivity of the pollutants.

[0014] In a preferred embodiment of the present invention, if any data of the pollution information on the surface of the power transmission line exceeds the corresponding set threshold, a transmission risk signal is generated; if any data of the pollution information on the surface of the power transmission line does not exceed the corresponding set threshold, an online monitoring normal signal is generated.

[0015] In a preferred embodiment of the present invention, the line change information and the line impact information are respectively the overlap duration of the period when the change value of the line surface thickness increases during the power transmission process and the period when the transmission loss increases, and the delay duration of the time node corresponding to the adjacent time node when the peak value of the change value of the line surface thickness increases during the power transmission process and the time node when the transmission loss increases.

[0016] In a preferred embodiment of the present invention, if the line change information exceeds the time period overlap duration threshold, or the line impact information does not exceed the delay duration threshold, a real-time impact abnormal signal is generated; if the line change information does not exceed the time period overlap duration threshold, and the line impact information exceeds the delay duration threshold, a real-time impact normal signal is generated and sent to the line monitoring platform.

[0017] In a preferred embodiment of the present invention, the vibration impact data and the galloping impact data are respectively the ratio of the rate of increase of vibration frequency to the rate of decrease of vibration amplitude during the vibration phase of the power transmission line in a light wind environment, and the ratio of the maximum increase span of galloping amplitude to the shortening span of adjacent galloping intervals during the galloping phase of the power transmission line in a variable environment.

[0018] In a preferred embodiment of the present invention, if the vibration impact data exceeds the velocity value ratio threshold, or the galloping impact data exceeds the span value ratio threshold, a hidden danger abnormal signal is generated; if the vibration impact data does not exceed the velocity value ratio threshold, and the galloping impact data does not exceed the span value ratio threshold, a hidden danger normal signal is generated and sent to the line monitoring platform.

[0019] As a preferred embodiment of the present invention, the line operation evaluation information includes the floating deviation value of the transmission speed corresponding to adjacent moments of the power transmission flow during the power transmission phase of the power transmission line, the duration of the power loss reduction control after the power loss at any part of the line in the power transmission flow reaches the peak value, and the span value of the continuous frequency increase of any transmission data fluctuation of the power transmission flow in any part of the trajectory when the power transmission flow repeats the transmission during the power transmission phase of the power transmission line.

[0020] In a preferred embodiment of the present invention, if the line operation evaluation coefficient exceeds the line operation evaluation coefficient threshold during the power transmission line transmission phase, an operation abnormality signal is generated; if the line operation evaluation coefficient does not exceed the line operation evaluation coefficient threshold during the power transmission line transmission phase, a normal operation signal is generated.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. In this invention, power transmission lines are monitored online. The presence of leakage risk on the surface of the power transmission lines is inferred through online monitoring of the lines. This ensures the feasibility of the power transmission lines through online monitoring. Under the premise of ensuring operation, the line operation status is monitored to ensure the timeliness and efficiency of power transmission, and improves the comprehensiveness of line monitoring.

[0023] Real-time impact analysis of power transmission line transmission periods can prevent the transmission efficiency of power transmission lines from being reduced due to the influence of the transportation environment, which could lead to deviations in online monitoring results and make it impossible to accurately monitor the feasibility of power transmission line operation. At the same time, real-time impact monitoring can improve the timeliness of line monitoring and control, provide reasonable and timely early warning and control for environmental impacts, reduce environmental impacts and improve line operation efficiency.

[0024] 2. In this invention, the operation of power transmission lines is analyzed for potential hazards. By analyzing the impact of micro-wind vibration and galloping monitoring during the real-time operation phase, it is inferred whether there are potential hazards in the real-time operation of the line. This avoids the failure to detect potential hazards in the line in a timely manner, which could lead to long-term accumulation of damage to the line. Moreover, these hazards are highly concealed and cannot be detected in time. Through hazard analysis, early warning can be given in a timely manner to avoid the impact of quantitative changes in hazards on qualitative changes.

[0025] Real-time operational assessments of power transmission lines are conducted, and the current operational efficiency of the power transmission lines is inferred based on the real-time power flow. This facilitates real-time monitoring of the operational status of power transmission lines and enables early warning and rectification in case of anomalies, thereby reducing the impact of power transmission line failures and ensuring the power transmission efficiency and feasibility of the power transmission lines.

[0026] 3. In this invention, the tower setting analysis of the power transmission line is performed. Based on the real-time tower setting analysis, it is inferred whether the operating efficiency of the auxiliary devices of the current power transmission line is qualified, so as to avoid the impact of unreasonable tower setting on the operating efficiency of the power transmission line. At the same time, the tower position can be accurately set to reduce the impact of long span power transmission line supply. Attached Figure Description

[0027] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0028] Figure 1 This is a principle block diagram of Embodiment 1 of the present invention;

[0029] Figure 2 This is a principle block diagram of Embodiment 2 of the present invention. Detailed Implementation

[0030] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0031] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0032] Example 1

[0033] Please see Figure 1 As shown, the power transmission line operation status monitoring system based on power transmission management includes a line monitoring platform, which is communicatively connected to an online line monitoring unit, a real-time impact monitoring unit, an operation hazard monitoring unit, and a line operation assessment unit.

[0034] The line monitoring platform generates online monitoring signals and sends them to the online monitoring unit. After receiving the online monitoring signals, the online monitoring unit monitors the power transmission line online and infers whether there is a risk of leakage on the surface of the power transmission line through online monitoring. In this way, the feasibility of the power transmission line is ensured through online monitoring. Under the premise of ensuring operation, the line operation status is monitored to ensure the timeliness and efficiency of power transmission, and the comprehensiveness of line monitoring is improved.

[0035] The system obtains the operating time of the power transmission line and selects any time at the middle or end of the operating time, and constructs the selected time as the online monitoring time. It also obtains the fluctuation trend of the power transmission loss of the power transmission line corresponding to adjacent online monitoring times. If the fluctuation trend of the power transmission loss shows a continuous increasing trend and the actual power transmission loss exceeds a set threshold, it is inferred that the current online monitoring of the power transmission line is abnormal. An insulation abnormality signal is generated and sent to the line monitoring platform. After receiving the insulation abnormality signal, the line monitoring platform replaces the material of the power transmission line and controls the insulation performance.

[0036] If the power loss during transmission fluctuates back and forth, and the actual power loss during transmission exceeds the set threshold, it is inferred that the current power transmission line is abnormal in online monitoring. An abnormal transmission signal is generated and sent to the line monitoring platform. After receiving the abnormal transmission signal, the line monitoring platform adjusts the power transmission task, such as reducing the peak task or speed, or reducing the peak transmission duration.

[0037] If the power loss during transmission fluctuates back and forth, and the actual power loss during transmission does not exceed the set threshold, then the pollution information on the surface of the power transmission line at the online monitoring time is collected. The pollution information includes the pollution area on the line surface and the influence value of the conductivity of the pollutants. The method for collecting the influence value of the conductivity of the pollutants is to clean the pollutants on the surface of the insulator with distilled water, and then measure the conductivity in the cleaning solution. The results are obtained by comparing the conductivity values.

[0038] If any data on the surface of the power transmission line exceeds the corresponding set threshold, the power transmission line is deemed to be affected, a transmission risk signal is generated and sent to the line monitoring platform. After receiving the transmission risk signal, the line monitoring platform cleans the surface of the power transmission line.

[0039] If any data on the surface of the power transmission line does not exceed the corresponding set threshold, it is determined that the power transmission line is not affected, an online monitoring normal signal is generated and sent to the line monitoring platform; at the same time, a real-time impact monitoring signal is generated and sent to the real-time impact monitoring unit.

[0040] After receiving the real-time impact monitoring signal, the real-time impact monitoring unit performs real-time impact analysis on the power transmission line during the transmission period when the online monitoring of the power transmission line is normal. This avoids the transmission efficiency of the power transmission line being reduced due to the impact of the transportation environment, which could lead to deviations in the online monitoring results and make it impossible to accurately monitor the feasibility of the power transmission line. At the same time, real-time impact monitoring can improve the timeliness of line monitoring and control, provide reasonable and timely early warning and control for environmental impacts, reduce environmental impacts and improve line operating efficiency.

[0041] The system obtains the overlap duration between periods of increased line surface thickness change and periods of increased transmission loss during power transmission. The line surface thickness value represents the change in line surface thickness caused by weather conditions, such as icing, water accumulation, or wear. Simultaneously, it obtains the delay duration between the peak increase in line surface thickness and the adjacent time nodes corresponding to the increase in transmission loss. The overlap duration between these two periods, and the delay duration between the peak increase in line surface thickness and the adjacent time nodes corresponding to the increase in transmission loss, are respectively labeled as line change information and line impact information. These are then compared with time period overlap duration thresholds and delay duration thresholds, respectively.

[0042] If the overlap between the period of increased change in line surface thickness and the period of increased transmission loss during power transmission exceeds the overlap time threshold, or if the delay between the peak time node of increased line surface thickness and the time node of increased transmission loss does not exceed the delay time threshold, it is inferred that the real-time transmission environment of the power transmission line is affected. A real-time impact anomaly signal is generated and sent to the line monitoring platform. After receiving the real-time impact anomaly signal, the line monitoring platform performs environmental impact control on the current power transmission line and lowers the online monitoring standard to ensure that the power transmission line is qualified while avoiding line maintenance. After successful environmental impact control, line detection is performed and maintenance is carried out when there is an anomaly, so as to avoid the decrease in line transmission efficiency due to environmental anomalies, which would lead to unnecessary maintenance costs.

[0043] If the overlap between the period of increased change in line surface thickness and the period of increased transmission loss during the power transmission process does not exceed the overlap time threshold, and the delay between the peak time node of increased line surface thickness and the time node of increased transmission loss during the power transmission process exceeds the delay time threshold, then it is inferred that there is no impact on the real-time transmission environment of the power transmission line, and a real-time impact normal signal is generated and sent to the line monitoring platform.

[0044] After receiving real-time signals affecting normal operation, the line monitoring platform generates a hidden danger monitoring signal and sends it to the hidden danger monitoring unit. Upon receiving the hidden danger monitoring signal, the hidden danger monitoring unit analyzes the hidden dangers in the power transmission line. By analyzing the impact of micro-wind vibration and galloping monitoring during the real-time operation phase, it infers whether there are hidden dangers in the real-time operation of the line. This avoids the situation where hidden dangers are not detected in time, leading to long-term accumulation of damage to the line. Moreover, hidden dangers are highly concealed and cannot be detected in time. Through hidden danger analysis, early warnings can be issued in time to avoid the impact of quantitative changes in hidden dangers on qualitative changes.

[0045] The ratio of the rate of increase in vibration frequency to the rate of decrease in vibration amplitude during the vibration phase of a power transmission line in a light wind environment was obtained. Simultaneously, the ratio of the maximum upward span of the galloping amplitude to the corresponding shortening span of the adjacent galloping interval during the galloping phase of a power transmission line in a variable environment was obtained. These ratios were then labeled as vibration impact data and galloping impact data, respectively, and compared with speed ratio thresholds and span ratio thresholds, respectively.

[0046] If the ratio of the rate of increase in vibration frequency to the rate of decrease in vibration amplitude exceeds a threshold value during the vibration phase of a power transmission line in a light wind environment, or if the ratio of the maximum rise span of the galloping amplitude to the shortening span of the adjacent galloping interval exceeds a threshold value during the galloping phase of a power transmission line in a variable environment, it is inferred that the power transmission line is experiencing an operational hazard monitoring anomaly. An hazard anomaly signal is generated and sent to the line monitoring platform. After receiving the hazard anomaly signal, the line monitoring platform will add anti-vibration measures to the corresponding section of the power transmission line, such as adding measures on the basis of the original anti-vibration measures, increasing the number of anti-vibration hammers, or adding damping wires, etc.

[0047] If the ratio of the rate of increase in vibration frequency to the rate of decrease in vibration amplitude during the vibration phase of a power transmission line in a light wind environment does not exceed the threshold value, and the ratio of the maximum increase span of the galloping amplitude to the shortening span of the adjacent galloping interval during the galloping phase of a power transmission line in a variable environment does not exceed the threshold value, then it is inferred that the monitoring of potential hazards during the operation of the power transmission line is normal, a potential hazard normal signal is generated, and the potential hazard normal signal is sent to the line monitoring platform.

[0048] Simultaneously, a line operation evaluation signal is generated and sent to the line operation evaluation unit. After receiving the line operation evaluation signal, the line operation evaluation unit performs a real-time operation evaluation of the power transmission line. Based on the real-time evaluation of the power transmission flow in the power transmission line, it infers the current operating efficiency of the power transmission line, which facilitates real-time monitoring of the operating status of the power transmission line and early warning and rectification when abnormalities occur, reducing the impact of power transmission line faults and ensuring the power transmission efficiency and feasibility of the power transmission line.

[0049] The power transmission trajectory of the power transmission line is set as the power transmission flow. The floating deviation value of the transmission speed corresponding to adjacent moments in the power transmission flow within the power transmission phase is obtained. At the same time, the duration of the power loss reduction control after the power loss at any part of the line in the power transmission flow reaches the peak value is obtained. The floating deviation value of the transmission speed corresponding to adjacent moments in the power transmission flow within the power transmission phase and the duration of the power loss reduction control after the power loss at any part of the line in the power transmission flow reaches the peak value are marked as FDP and CSX, respectively.

[0050] The range of the increase in the sustained frequency of any fluctuation in any transmission data of the power transmission flow during the repeated trajectory transmission of the power transmission flow in the power transmission phase is obtained, and the range of the increase in the sustained frequency of any fluctuation in any transmission data of the power transmission flow during the repeated trajectory transmission of the power transmission flow in the power transmission phase is marked as ZJK, where the transmission data represents the speed, loss, temperature and other data of the power transmission flow;

[0051] The collected data are uniformly labeled as line operation assessment information, and substituted into the formula to obtain the line operation assessment coefficient during the power transmission phase. The formula is as follows:

[0052] Where G is the line operation evaluation coefficient, fnm1, fnm2, and fnm3 are preset proportional coefficients, e is a natural constant, and α is an error correction factor with a value of 0.99.

[0053] Compare the line operation evaluation coefficient with the line operation evaluation coefficient threshold during the power transmission phase:

[0054] If the line operation evaluation coefficient exceeds the line operation evaluation coefficient threshold during the transmission phase of the power transmission line, it is inferred that the line operation evaluation during the transmission phase of the power transmission line is abnormal, an operation abnormality signal is generated and sent to the line monitoring platform. After receiving the operation abnormality signal, the line monitoring platform will rectify the operation of the power transmission line and carry out targeted maintenance on various parts of the line, with the maintenance center being the part of the line where the transmission data fluctuates during the transmission process.

[0055] If the line operation evaluation coefficient does not exceed the line operation evaluation coefficient threshold during the transmission phase of the power transmission line, it is inferred that the line operation evaluation during the transmission phase of the power transmission line is normal, and a normal operation signal is generated and sent to the line monitoring platform.

[0056] Example 2

[0057] The previous embodiment monitored the operational status of the power transmission line. This embodiment, based on the previous embodiment, analyzes and sets up auxiliary devices for the power transmission line. Please refer to [link to previous embodiment]. Figure 2 As shown, the operation status monitoring system is equipped with a tower setting analysis unit;

[0058] After the line completes online monitoring, a tower setting analysis signal is generated and sent to the tower setting analysis unit. After receiving the tower setting analysis signal, the tower setting analysis unit performs tower setting analysis on the power transmission line. Based on the real-time tower setting analysis, it infers whether the operating efficiency of the auxiliary devices of the current power transmission line is qualified, so as to avoid the operating efficiency of the power transmission line being affected by unreasonable tower setting. At the same time, it can accurately set the tower position to reduce the impact of long span power transmission line supply.

[0059] The system obtains the fluctuation frequency of the constant deviation value of the terrain height corresponding to any adjacent tower position when the power transmission line transmits electricity at a real-time set tower position. Simultaneously, it obtains the ratio of the real-time tension value of the line tension at the current adjacent tower position to the real-time tension value of the line at that position during power transmission. The system then compares the fluctuation frequency of the constant deviation value of the terrain height corresponding to any adjacent tower position and the real-time tension value ratio of the power transmission line with the numerical fluctuation frequency threshold and the tension value ratio threshold, respectively.

[0060] If the fluctuation frequency of the constant deviation value of the terrain height corresponding to any adjacent tower position exceeds the value fluctuation frequency threshold when the power transmission line transmits electricity with the tower position set in real time, or if the ratio of the line tension corresponding to the current adjacent tower position to the real-time tension value at the corresponding position does not exceed the tension value ratio threshold, it is inferred that the tower setting of the power transmission line is unreasonable. A tower replanning signal is generated and sent to the line monitoring platform. After receiving the tower replanning signal, the line monitoring platform replans the tower position of the power transmission line.

[0061] If the fluctuation frequency of the constant deviation value of the terrain height corresponding to any adjacent tower position does not exceed the value fluctuation frequency threshold when the power transmission line transmits electricity with the tower position set in real time, and the ratio of the real-time tension value of the line tension corresponding to the current adjacent tower position to the tension value of the line at the corresponding position exceeds the tension value ratio threshold, then it is inferred that the tower setting of the power transmission line is reasonable, a tower position reasonable signal is generated and sent to the line monitoring platform.

[0062] The above formulas are all derived from software simulation using a large amount of data, and are selected to be close to the actual values. The coefficients in the formulas are set by those skilled in the art based on the actual situation.

[0063] In use, this invention involves an online monitoring unit acquiring the operating period of the power transmission line and selecting any time between the midpoint and the beginning and end of the operating period, uniformly constructing the selected times as the online monitoring time. The online monitoring is then analyzed to determine if it is qualified. If qualified, a real-time impact monitoring unit performs real-time impact analysis on the power transmission line's transmission period, acquiring line change information and line impact information. Based on information comparison, it determines if the real-time impact analysis is normal. If the impact analysis is normal, an operational hazard monitoring unit acquires vibration and galloping impact data of the power transmission line, analyzes the data to determine if there are operational hazards in the power transmission line. If the operational hazard monitoring is qualified, a line operation assessment unit collects line operation assessment information, calculates line operation assessment coefficients, compares the coefficients to determine if the line's transmission operation status is qualified, and then uses the line monitoring platform to perform targeted line control based on the signals generated from the data analysis.

[0064] The preferred embodiments of the present invention disclosed above are merely illustrative of the invention. These preferred embodiments do not exhaustively describe all details, nor do they limit the invention to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the invention, thereby enabling those skilled in the art to better understand and utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. A power transmission line operation status monitoring system based on power transmission management, characterized in that, This includes a line monitoring platform, which is connected to an online line monitoring unit, a real-time impact monitoring unit, an operational hazard monitoring unit, and a line operation assessment unit. The online monitoring unit acquires the operating time of the power transmission line and selects any time at the middle or end of the operating time, and constructs the selected time as the online monitoring time. Through online data acquisition and analysis, it infers whether the online monitoring is qualified. If qualified, the real-time impact monitoring unit performs real-time impact analysis on the power transmission line's transmission period, acquires line change information and line impact information, and infers whether the real-time impact analysis is normal based on information comparison. After the impact analysis is normal, the operation hazard monitoring unit obtains the vibration impact data and galloping impact data of the power transmission line. Based on the data analysis, it infers whether there are any operation hazards in the operation of the power transmission line. After the operation hazard monitoring is qualified, the line operation assessment unit collects the line operation assessment information, calculates the line operation assessment coefficient, infers whether the line transmission operation status is qualified based on the coefficient comparison, and performs targeted line control based on the signals generated by the data analysis through the line monitoring platform. The operation process of the online monitoring unit for power lines is as follows: When the power transmission line is acquired, the power transmission loss fluctuation trend of the power transmission line at adjacent online monitoring times is obtained. If the power transmission loss fluctuation trend shows a continuous increasing trend and the actual power transmission loss exceeds the set threshold, an insulation abnormality signal is generated; if the power transmission loss fluctuation trend shows a fluctuating trend and the actual power transmission loss exceeds the set threshold, a transmission abnormality signal is generated. If the power loss during transmission fluctuates back and forth, and the actual power loss during transmission does not exceed the set threshold, then the pollution information on the surface of the power transmission line at the time of online monitoring will be collected. The pollution information includes the pollution area on the line surface and the influence value of the conductivity of the pollutants. If any data on the surface of the power transmission line exceeds the corresponding set threshold, a transmission risk signal is generated; if any data on the surface of the power transmission line does not exceed the corresponding set threshold, an online monitoring normal signal is generated. The line change information and line impact information are respectively the overlap duration of the period when the change in line surface thickness increases and the period when the transmission loss increases during the power transmission process, and the delay duration between the peak time node of the change in line surface thickness and the time node corresponding to the increase in transmission loss during the power transmission process. If the line change information exceeds the time period overlap duration threshold, or the line impact information does not exceed the delay duration threshold, a real-time impact anomaly signal is generated. If the line change information does not exceed the time period overlap threshold, and the line impact information exceeds the delay threshold, a real-time impact normal signal is generated and sent to the line monitoring platform.

2. The transmission line operation status monitoring system based on power transmission management according to claim 1, characterized in that, The vibration impact data and galloping impact data are respectively the ratio of the rate of increase of vibration frequency to the rate of decrease of vibration amplitude during the vibration phase of the power transmission line in a light wind environment, and the ratio of the maximum increase span of galloping amplitude to the shortening span of adjacent galloping intervals during the galloping phase of the power transmission line in a variable environment.

3. The transmission line operation status monitoring system based on power transmission management according to claim 2, characterized in that, If the vibration impact data exceeds the velocity value ratio threshold, or the galloping impact data exceeds the span value ratio threshold, a hazard abnormality signal is generated; if the vibration impact data does not exceed the velocity value ratio threshold, and the galloping impact data does not exceed the span value ratio threshold, a hazard normal signal is generated and sent to the line monitoring platform.

4. The transmission line operation status monitoring system based on power transmission management according to claim 1, characterized in that, The line operation evaluation information includes the fluctuation deviation value of the transmission speed corresponding to adjacent moments in the power transmission flow during the power transmission phase, the duration of the power loss reduction control after the power loss at any part of the line is at the peak of the loss, and the span value of the continuous frequency increase of any transmission data fluctuation in any part of the transmission flow when the power transmission flow repeats the transmission trajectory during the power transmission phase.

5. The transmission line operation status monitoring system based on power transmission management according to claim 4, characterized in that, If the line operation evaluation coefficient exceeds the line operation evaluation coefficient threshold during the transmission phase of the power transmission line, an abnormal operation signal is generated; if the line operation evaluation coefficient does not exceed the line operation evaluation coefficient threshold during the transmission phase of the power transmission line, a normal operation signal is generated.

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