Power grid flood prevention and disaster relief monitoring and early warning system based on geographic meteorological information

Abstract

The present invention belongs to the field of power grid flood prevention and disaster relief monitoring and early warning technology, and relates to a power grid flood prevention and disaster relief monitoring and early warning system based on geographic meteorological information. The present invention is based on the constructed meteorological information acquisition module, meteorological information analysis module, power grid icing monitoring module, pole collapse risk analysis module, transmission line failure risk analysis module, risk early warning module and information base. By analyzing the collapse risk coefficient of each pole belonging to each icing-prone area, it is helpful to repair the pole with collapse risk in time, which is beneficial to the normal operation of power equipment, helps to maintain the road traffic environment, and ensures the normal passage of vehicles and pedestrians. By analyzing the failure risk coefficient of each transmission line belonging to the target power grid in each icing-prone area, the transmission line is monitored and risk-controlled from a diversified perspective, which reduces the occurrence of safety accidents, reduces the risk of transmission line failure and power outage, and ensures the safe and stable operation of the power grid.

Description

Technical Field

[0001] The invention belongs to the technical field of power grid flood prevention and disaster relief monitoring and early warning, and relates to a power grid flood prevention and disaster relief monitoring and early warning system based on geographic meteorological information. Background Art

[0002] Power grid flood prevention and disaster relief refers to taking a series of preventive and emergency measures to ensure the normal operation of power equipment and the normal power demand of users when natural disasters such as floods and cold waves occur, so as to ensure the safe and stable operation of the power system. Therefore, as a type of power grid flood prevention and disaster relief, cold wave prevention is of great significance for monitoring and early warning.

[0003] The existing power grid flood prevention and disaster relief supervision system mainly monitors meteorological information in real time, issues early warnings to areas where cold waves and ice and snow weather may occur, and simultaneously monitors and analyzes the status and operation of power grid equipment in the early warning areas in real time, and uses remote control functions to take preventive measures.

[0004] However, the existing power grid flood prevention and disaster relief supervision system does not analyze the ice-prone areas based on meteorological information, so as to monitor the ice thickness and inclination of the poles in the ice-prone areas and determine their toppling risk. The tilt of the poles may cause pedestrians to come into contact with high-voltage wires and cause electric shock accidents. It may also affect the normal operation of power equipment and cause power outages and other consequences, bringing inconvenience to life and production. In addition, the toppling of poles will also damage the road traffic environment and affect the normal passage of vehicles and pedestrians.

[0005] The existing power grid flood prevention and disaster relief supervision system does not monitor and analyze the transmission lines in ice-prone areas from multiple perspectives such as ice thickness, sag, temperature and current, and then determine their failure risks. Among them, excessive ice thickness on the transmission line will cause its sag to increase, and excessive sag on the transmission line will increase the conductor loss and reduce the transmission efficiency. It may also cause the distance between the crossing lines and other roads and pipelines under the conductors to decrease, which is prone to accidents. If the temperature of the transmission line is too low, its mechanical properties will change, and there may be a risk of fracture. Icing on the transmission line will affect the efficiency of power transmission, hinder power transmission, and cause power supply interruption or instability. Summary of the invention

[0006] In view of this, in order to solve the problems raised in the above background technology, a power grid flood prevention and disaster relief monitoring and early warning system based on geographic meteorological information is proposed.

[0007] The purpose of the present invention can be achieved through the following technical solutions: The present invention provides a power grid flood prevention and disaster relief monitoring and early warning system based on geographic meteorological information, including: a meteorological information acquisition module, which is used to divide the area where the target power grid is located into sub-areas according to predefined rules, obtain the sub-areas of the area where the target power grid is located, and obtain the meteorological information of each sub-area.

[0008] The meteorological information analysis module is used to analyze the freezing index of each sub-area, so as to obtain each ice-prone area.

[0009] The power grid icing monitoring module is used to carry out real-time monitoring of the poles belonging to the target power grid in each icing-prone area and the transmission lines between the poles, and obtain the ice thickness and pole inclination of each pole belonging to the target power grid in each icing-prone area, as well as the ice thickness, sag, temperature and current of each transmission line belonging to the target power grid in each icing-prone area.

[0010] The pole collapse risk analysis module is used to analyze the collapse risk coefficient of each pole in each icing-prone area and determine the collapse risk of each pole in each icing-prone area.

[0011] The transmission line fault risk analysis module is used to analyze the fault risk coefficient of each transmission line belonging to the target power grid in each icing-prone area, and determine the fault risk of each transmission line belonging to the target power grid in each icing-prone area.

[0012] The risk warning module is used to issue warnings to each pole in each icing-prone area with a risk of pole collapse and each transmission line in each icing-prone area target power grid with a risk of failure.

[0013] The information base is used to store the height of each pole belonging to the target power grid in each sub-area, the standard temperature and standard current of the transmission line when the target power grid is operating normally, the spatial distribution map of the power facilities of the target power grid, and the corresponding number sets of various types of transmission lines.

[0014] Preferably, the meteorological information of each sub-area includes snowfall, rainfall and weather temperature.

[0015] Preferably, the specific analysis method of the freezing index of each sub-region is: extracting the snowfall, rainfall and weather temperature of each sub-region, analyzing the freezing index of each sub-region Where S i , R i 、T iare the snowfall, rainfall and weather temperature of the ith sub-area, η1 and η2 are the correction factors corresponding to the set unit snowfall and unit rainfall, μ0 is the compensation value of the set corrected weather temperature, α1, α2 and α3 are the weight coefficients corresponding to the freezing index corresponding to the set snowfall, rainfall and weather temperature, i=1,2,...,b, i is the number of each sub-area.

[0016] The freezing index of each sub-area is compared with the preset freezing coefficient threshold, and the sub-areas with freezing index greater than or equal to the preset freezing index threshold are screened out, recorded as easy-to-ice areas, and numbered 1, 2, ..., j, ..., c in sequence.

[0017] Preferably, the specific analysis method of the collapse risk coefficient of each pole belonging to each icing-prone area is: extracting the ice thickness and pole inclination of each pole belonging to the target power grid in each icing-prone area, and analyzing the collapse risk coefficient of each pole belonging to each icing-prone area.

[0018]

[0019] Among them, H jx ,θ jx are the ice thickness and pole inclination of the xth pole of the target power grid in the jth icing-prone area, respectively; H0 is the permissible ice thickness of the pole under the safe operation conditions of the target power grid; L jx is the height of the x-th pole belonging to the target power grid in the j-th icing-prone area extracted from the information database, x=1,2,...,m, x is the number of each pole, l0 is the set allowable tilt deviation distance of the pole, and e is a natural constant.

[0020] The collapse risk coefficient of each pole belonging to each ice-prone area is compared with the set collapse risk coefficient threshold. If the collapse risk coefficient of a pole belonging to an ice-prone area is greater than or equal to the set collapse risk coefficient threshold, the collapse risk of the pole belonging to the ice-prone area is recorded as having a collapse risk, and then the poles belonging to each ice-prone area with a risk of pole collapse are counted.

[0021] Preferably, the specific analysis method of the failure risk coefficient of each transmission line belonging to each target power grid in each icing-prone area is: extracting the ice thickness, arc sag, temperature and current of each transmission line belonging to each target power grid in each icing-prone area, and analyzing the failure risk coefficient of each transmission line belonging to each target power grid in each icing-prone area. where H′ jy ,φ jy , T′ jy ,I jyare the ice thickness, sag, temperature and current of the yth transmission line belonging to the target power grid in the jth icing-prone area, respectively; H′0 and φ0 are the allowable ice thickness and allowable sag of the transmission line under the set safe operation conditions of the target power grid, respectively; T′0 and I0 are the standard temperature and standard current of the transmission line when the target power grid is operating normally extracted from the information database, respectively; κ0 is the temperature ratio threshold of the transmission line under the set safe operation conditions of the target power grid; y=1,2,...,n, and y is the number of each transmission line.

[0022] The fault risk coefficient of each transmission line belonging to the target power grid in each easy-to-ice area is compared with the set fault risk coefficient threshold. If the fault risk coefficient of a transmission line belonging to a target power grid in a easy-to-ice area is greater than or equal to the set fault risk coefficient threshold, the failure risk of the transmission line belonging to the target power grid in the easy-to-ice area is recorded as having a failure risk, and then the transmission lines belonging to the target power grid in each easy-to-ice area with a failure risk are statistically obtained.

[0023] Preferably, the specific method for obtaining the ice thickness of each transmission line belonging to each target power grid in each icing-prone area is: equally divide each transmission line belonging to each target power grid in each icing-prone area to obtain each sub-line segment corresponding to each transmission line belonging to each target power grid in each icing-prone area.

[0024] The ice thickness of each sub-line section corresponding to each transmission line of each target power grid in each icing-prone area is obtained, and they are arranged in order of size. After removing the data corresponding to the first and last, the average ice thickness of each transmission line belonging to the target power grid in each icing-prone area is calculated to obtain the average ice thickness of each transmission line belonging to the target power grid in each icing-prone area, which is recorded as the ice thickness of each transmission line belonging to the target power grid in each icing-prone area.

[0025] Preferably, the specific method for obtaining the sag of each transmission line belonging to the target power grid in each icing-prone area is: using the horizontal line between the poles belonging to the target power grid in each icing-prone area as the horizontal axis, drawing a vertical line through the midpoint of the horizontal line and using it as the vertical axis, and establishing a two-dimensional coordinate system with the midpoint of the horizontal line as the origin.

[0026] Obtain the coordinates of the supporting points on the left and right poles of each transmission line belonging to the target power grid in each icing-prone area, which are recorded as and Obtain the coordinates of the lowest point of each transmission line of the target power grid in each icing-prone area, denoted as (p jy ,q jy ), and further obtain the distance between the vertical point where the lowest point of the conductor of each transmission line belonging to the target power grid in each icing-prone area falls on the horizontal axis and the poles on its left and right sides.

[0027] Analyze the sag of each transmission line in each target grid in each icing-prone area in are the distances between the vertical point where the lowest point of the conductor of the yth transmission line of the target power grid in the jth icing-prone area falls on the horizontal axis and the poles on its left and right sides.

[0028] Preferably, the specific operation method of issuing early warning to each pole belonging to each icing-prone area where there is a risk of pole collapse is: extracting each pole belonging to each icing-prone area where there is a risk of pole collapse, recording them as risk poles belonging to each icing-prone area, and then obtaining their corresponding numbers.

[0029] The spatial distribution map of the power facilities of the target power grid is retrieved from the information database, and the corresponding numbers of the risky poles in each easy-to-ice area are matched with the corresponding numbers of the poles marked in the spatial distribution map of the power facilities of the target power grid to obtain the locations of the risky poles in each easy-to-ice area, send them to the control center of the target power grid, and issue an early warning.

[0030] Preferably, the specific operation method of issuing early warning to each transmission line belonging to each target power grid in each icing-prone area with failure risk is: extracting each transmission line belonging to each target power grid in each icing-prone area with failure risk, recording it as each risk transmission line belonging to each target power grid in each icing-prone area, and then obtaining its corresponding number.

[0031] The corresponding numbers of each risky transmission line belonging to the target power grid in each prone-to-icing area are matched with the corresponding number sets of each type of transmission line stored in the information database to obtain the types of risky transmission lines belonging to the target power grid in each prone-to-icing area, and compared with the corresponding warning levels of each type of transmission line extracted from the information database to obtain the corresponding warning levels of each type of risky transmission line belonging to the target power grid in each prone-to-icing area.

[0032] Further, the corresponding numbers of each risky transmission line in each type of transmission line belonging to each easy-to-ice area are matched with the corresponding numbers of each type of transmission line marked in the spatial distribution map of power facilities of the target power grid to obtain the location of each risky transmission line in each type of transmission line belonging to each easy-to-ice area.

[0033] The warning levels and numbers corresponding to the risky transmission line types belonging to the target power grids in each icing-prone area are sent to the target power grid control center.

[0034] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. The present invention obtains the meteorological information of each sub-region and analyzes the freezing index of each sub-region, thereby obtaining each area prone to icing, which helps to detect abnormal situations early, issue timely warnings and take measures to ensure the safe operation of the power grid and avoid or reduce losses caused by disasters.

[0035] 2. The present invention analyzes the collapse risk coefficient of each pole belonging to each easy-to-ice-covered area according to the ice thickness and the pole inclination of each pole belonging to the target power grid in each easy-to-ice-covered area, and determines the collapse risk of each pole belonging to each easy-to-ice-covered area, which helps to take timely repair measures for each pole with a risk of collapse, effectively avoids electric shock accidents caused by residents contacting high-voltage wires due to the inclination of poles, is beneficial to the normal operation of power equipment, helps to maintain the road traffic environment, and ensures the normal passage of vehicles and pedestrians.

[0036] 3. The present invention analyzes the failure risk coefficient of each transmission line belonging to each target power grid in each easy-to-ice-covered area through the ice thickness, sag, temperature and current of each transmission line belonging to each target power grid in each easy-to-ice-covered area, and determines the failure risk of each transmission line belonging to each target power grid in each easy-to-ice-covered area, monitors and risks of transmission lines from a diversified perspective, avoids the increase of wire loss and reduction of transmission efficiency due to excessive sag of transmission lines, reduces the occurrence of safety accidents, avoids the risk of transmission line breakage, reduces the risk of transmission line failure and power outage, and ensures the safe and stable operation of the power grid.

[0037] 4. The present invention, by combining the spatial distribution map of the power facilities of the target power grid, accurately and quickly obtains the locations of each pole belonging to each icing-prone area where there is a risk of pole collapse and each transmission line belonging to each icing-prone area of ​​the target power grid where there is a risk of failure, and issues early warning, which helps to save time and improve the efficiency of fault maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0039] Figure 1 It is a schematic diagram of system module connection of the present invention. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] See also Figure 1As shown, the present invention provides a power grid flood prevention and disaster relief monitoring and early warning system based on geographic meteorological information, and the specific modules are distributed as follows: meteorological information acquisition module, meteorological information analysis module, power grid icing monitoring module, pole collapse risk analysis module, transmission line failure risk analysis module, risk early warning module and information library. Among them, the connection mode between the modules is: the meteorological information acquisition module is connected with the meteorological information analysis module, the power grid icing monitoring module is respectively connected with the pole collapse risk analysis module and the transmission line failure risk analysis module, the risk early warning module is respectively connected with the pole collapse risk analysis module and the transmission line failure risk analysis module, and the information library is respectively connected with the pole collapse risk analysis module, the transmission line failure risk analysis module and the risk early warning module.

[0042] The meteorological information acquisition module is used to divide the area where the target power grid is located into sub-areas according to predefined rules, obtain the sub-areas of the area where the target power grid is located, and obtain meteorological information of each sub-area.

[0043] It should be further explained that the specific content of the predefined rule is: dividing sub-regions according to the regions where the target power grid is located. In a specific example, the target power grid is located in City A, and City A includes three regions, namely, Region B, Region D and Region E. Then Region B, Region D and Region E are the three sub-regions of the target power grid.

[0044] The meteorological information analysis module is used to analyze the freezing index of each sub-area, so as to obtain each ice-prone area.

[0045] As a preferred example, the meteorological information of each sub-area includes snowfall, rainfall and weather temperature.

[0046] It should be further explained that the specific method for obtaining the snowfall, rainfall and weather temperature of each sub-region is: directly obtaining the snowfall, rainfall and weather temperature of each sub-region from the meteorological center.

[0047] Preferably, the specific analysis method of the freezing index of each sub-region is: extracting the snowfall, rainfall and weather temperature of each sub-region, analyzing the freezing index of each sub-region Where S i , R i , T i are the snowfall, rainfall and weather temperature of the ith sub-area, η1 and η2 are the correction factors corresponding to the set unit snowfall and unit rainfall, μ0 is the compensation value of the set corrected weather temperature, α1, α2 and α3 are the weight coefficients corresponding to the freezing index corresponding to the set snowfall, rainfall and weather temperature, i=1,2,...,b, i is the number of each sub-area.

[0048] The freezing index of each sub-area is compared with the preset freezing coefficient threshold, and the sub-areas with freezing index greater than or equal to the preset freezing index threshold are screened out, recorded as easy-to-ice areas, and numbered 1, 2, ..., j, ..., c in sequence.

[0049] The present invention obtains meteorological information of each sub-region and analyzes the freezing index of each sub-region, thereby obtaining each icing-prone area, which helps to discover abnormal situations early, issue timely warnings and take measures to ensure the safe operation of the power grid and avoid or reduce losses caused by disasters.

[0050] The power grid icing monitoring module is used to carry out real-time monitoring of the poles belonging to the target power grid in each icing-prone area and the transmission lines between the poles, and obtain the ice thickness and inclination of each pole belonging to the target power grid in each icing-prone area, as well as the ice thickness, sag, temperature and current of each transmission line belonging to the target power grid in each icing-prone area.

[0051] It should be further explained that the specific method for obtaining the ice thickness and inclination of each pole belonging to the target power grid in each easy-to-ice-covered area is: using an infrared ice thickness meter deployed on a drone to detect each pole belonging to the target power grid in each easy-to-ice-covered area to obtain the ice thickness of each pole belonging to the target power grid in each easy-to-ice-covered area.

[0052] The inclination monitor deployed on the UAV is used to detect the inclination of each pole belonging to the target power grid in each icing-prone area to obtain the inclination of each pole belonging to the target power grid in each icing-prone area.

[0053] The specific method for obtaining the temperature and current of each transmission line belonging to the target power grid in each easy-to-ice-covering area is: using the infrared sensor deployed by the drone to detect each transmission line belonging to the target power grid in each easy-to-ice-covering area, obtaining the temperature distribution image of each transmission line belonging to the target power grid in each easy-to-ice-covering area, comparing it with the standard temperature value colorimetric card stored in the information database, obtaining each temperature value of each transmission line belonging to the target power grid in each easy-to-ice-covering area, further performing mean processing on it, obtaining the average temperature value of each transmission line belonging to the target power grid in each easy-to-ice-covering area, and recording it as the temperature of each transmission line belonging to the target power grid in each easy-to-ice-covering area.

[0054] The contactless current sensors deployed in the UAV are used to measure the current of each transmission line belonging to the target power grid in each icing-prone area, and the current of each transmission line belonging to the target power grid in each icing-prone area is obtained.

[0055] The pole collapse risk analysis module is used to analyze the collapse risk coefficient of each pole in each icing-prone area and determine the collapse risk of each pole in each icing-prone area.

[0056] As a preferred example, the specific analysis method of the collapse risk coefficient of each pole belonging to each easy-to-ice-covered area is: extracting the ice thickness and pole inclination of each pole belonging to the target power grid in each easy-to-ice-covered area, analyzing the collapse risk coefficient of each pole belonging to each easy-to-ice-covered area

[0057] Among them, H jx ,θ jx are the ice thickness and pole inclination of the xth pole of the target power grid in the jth icing-prone area, respectively; H0 is the permissible ice thickness of the pole under the safe operation conditions of the target power grid; L jx is the height of the x-th pole belonging to the target power grid in the j-th icing-prone area extracted from the information database, x=1,2,...,m, x is the number of each pole, l0 is the set allowable tilt deviation distance of the pole, and e is a natural constant.

[0058] The collapse risk coefficient of each pole belonging to each ice-prone area is compared with the set collapse risk coefficient threshold. If the collapse risk coefficient of a pole belonging to an ice-prone area is greater than or equal to the set collapse risk coefficient threshold, the collapse risk of the pole belonging to the ice-prone area is recorded as having a collapse risk, and then the poles belonging to each ice-prone area with a risk of pole collapse are counted.

[0059] The present invention analyzes the collapse risk coefficient of each pole belonging to each easy-to-ice-covered area according to the ice thickness and the pole inclination of each pole belonging to the target power grid in each easy-to-ice-covered area, and determines the collapse risk of each pole belonging to each easy-to-ice-covered area, which helps to take timely repair measures for each pole with a risk of collapse, effectively avoids electric shock accidents caused by residents contacting high-voltage wires due to the inclination of the poles, is beneficial to the normal operation of power equipment, helps to maintain the road traffic environment, and ensures the normal passage of vehicles and pedestrians.

[0060] The transmission line fault risk analysis module is used to analyze the fault risk coefficient of each transmission line belonging to the target power grid in each icing-prone area, and determine the fault risk of each transmission line belonging to the target power grid in each icing-prone area.

[0061] As a preferred example, the specific analysis method of the failure risk coefficient of each transmission line belonging to each target power grid in each icing-prone area is as follows: extracting the ice thickness, arc sag, temperature and current of each transmission line belonging to each target power grid in each icing-prone area, and analyzing the failure risk coefficient of each transmission line belonging to each target power grid in each icing-prone area. where H′ jy ,φ jy , T′ jy ,I jyare the ice thickness, sag, temperature and current of the yth transmission line belonging to the target power grid in the jth icing-prone area, respectively; H′0 and φ0 are the allowable ice thickness and allowable sag of the transmission line under the set safe operation conditions of the target power grid, respectively; T′0 and I0 are the standard temperature and standard current of the transmission line when the target power grid is operating normally extracted from the information database, respectively; κ0 is the temperature ratio threshold of the transmission line under the set safe operation conditions of the target power grid; y=1,2,...,n, and y is the number of each transmission line.

[0062] The fault risk coefficient of each transmission line belonging to the target power grid in each easy-to-ice area is compared with the set fault risk coefficient threshold. If the fault risk coefficient of a transmission line belonging to a target power grid in a easy-to-ice area is greater than or equal to the set fault risk coefficient threshold, the failure risk of the transmission line belonging to the target power grid in the easy-to-ice area is recorded as having a failure risk, and then the transmission lines belonging to the target power grid in each easy-to-ice area with a failure risk are statistically obtained.

[0063] As a preferred example, the specific method for obtaining the ice thickness of each transmission line belonging to the target power grid in each icing-prone area is: equally divide each transmission line belonging to the target power grid in each icing-prone area to obtain sub-line segments corresponding to each transmission line belonging to the target power grid in each icing-prone area.

[0064] The ice thickness of each sub-line section corresponding to each transmission line of each target power grid in each icing-prone area is obtained, and they are arranged in order of size. After removing the data corresponding to the first and last, the average ice thickness of each transmission line belonging to the target power grid in each icing-prone area is calculated to obtain the average ice thickness of each transmission line belonging to the target power grid in each icing-prone area, which is recorded as the ice thickness of each transmission line belonging to the target power grid in each icing-prone area.

[0065] It should be further explained that the specific method for obtaining the average ice thickness of each transmission line belonging to the target power grid in each icing-prone area is the same as the method for obtaining the ice thickness of each pole belonging to the target power grid in each icing-prone area.

[0066] As a preferred example, the specific method for obtaining the sag of each transmission line belonging to the target power grid in each icing-prone area is: using the horizontal line between the poles belonging to the target power grid in each icing-prone area as the horizontal axis, drawing a vertical line through the midpoint of the horizontal line and using it as the vertical axis, and establishing a two-dimensional coordinate system with the midpoint of the horizontal line as the origin.

[0067] It should be further explained that, from the above, it can be seen that a two-dimensional coordinate system is established on each transmission line belonging to each target power grid in each icing-prone area, that is, a two-dimensional coordinate system corresponding to each transmission line belonging to each target power grid in each icing-prone area is established.

[0068] Obtain the coordinates of the supporting points on the left and right poles of each transmission line belonging to the target power grid in each icing-prone area, which are recorded as and Obtain the coordinates of the lowest point of each transmission line of the target power grid in each icing-prone area, denoted as (p jy ,q jy ), and further obtain the distance between the vertical point where the lowest point of the conductor of each transmission line belonging to the target power grid in each icing-prone area falls on the horizontal axis and the poles on its left and right sides.

[0069] Analyze the sag of each transmission line in each target grid in each icing-prone area in are the distances between the vertical point where the lowest point of the conductor of the yth transmission line of the target power grid in the jth icing-prone area falls on the horizontal axis and the poles on its left and right sides.

[0070] The present invention analyzes the failure risk coefficient of each transmission line belonging to each target power grid in each easy-to-ice-covered area through the ice thickness, sag, temperature and current of each transmission line belonging to each target power grid in each easy-to-ice-covered area, and determines the failure risk of each transmission line belonging to each target power grid in each easy-to-ice-covered area, monitors and risks the transmission lines from a diversified perspective, avoids the increase of wire loss and the reduction of transmission efficiency due to excessive sag of the transmission lines, reduces the occurrence of safety accidents, avoids the risk of transmission line breakage, reduces the risk of transmission line failure and power outage, and ensures the safe and stable operation of the power grid.

[0071] The risk warning module is used to issue warnings to each pole in each icing-prone area with a risk of pole collapse and each transmission line in each icing-prone area target power grid with a risk of failure.

[0072] As a preferred example, the specific operation method of issuing early warning to each pole belonging to each icing-prone area where there is a risk of pole collapse is: extract each pole belonging to each icing-prone area where there is a risk of pole collapse, record them as risk poles belonging to each icing-prone area, and then obtain their corresponding numbers.

[0073] The spatial distribution map of the power facilities of the target power grid is retrieved from the information database, and the corresponding numbers of the risky poles in each easy-to-ice area are matched with the corresponding numbers of the poles marked in the spatial distribution map of the power facilities of the target power grid to obtain the locations of the risky poles in each easy-to-ice area, send them to the control center of the target power grid, and issue an early warning.

[0074] As a preferred example, the specific operation method of issuing early warning for each transmission line belonging to the target power grid in each icing-prone area with failure risk is: extracting each transmission line belonging to the target power grid in each icing-prone area with failure risk, recording it as each risk transmission line belonging to the target power grid in each icing-prone area, and then obtaining its corresponding number.

[0075] The corresponding numbers of each risky transmission line belonging to the target power grid in each prone-to-icing area are matched with the corresponding number sets of each type of transmission line stored in the information database to obtain the types of risky transmission lines belonging to the target power grid in each prone-to-icing area, and compared with the corresponding warning levels of each type of transmission lines extracted from the information database to obtain the corresponding warning levels of each type of risky transmission line belonging to the target power grid in each prone-to-icing area.

[0076] It should be further explained that the various types of transmission lines include low voltage transmission lines, medium voltage transmission lines, high voltage transmission lines, extra high voltage transmission lines and ultra high voltage transmission lines.

[0077] It needs to be further explained that the definition of an element in a set is: certain specified objects put together form a set, and each object is called an element.

[0078] The set of numbers corresponding to each type of transmission line is equal to the number of each type of transmission line corresponding to each transmission line.

[0079] The specific operation method for matching the corresponding numbers of each risk transmission line belonging to the target power grid in each easy-to-ice area with the corresponding number sets of various types of transmission lines stored in the information database is: match the corresponding numbers of each risk transmission line belonging to the target power grid in each easy-to-ice area with the numbers of each transmission line corresponding to each type of transmission line; if the corresponding number of a risk transmission line belonging to a target power grid in an easy-to-ice area is consistent with the number of a certain type of transmission line corresponding to a certain transmission line, then the type of the risk transmission line belonging to the target power grid in the easy-to-ice area is a certain type of transmission line; otherwise, match the corresponding number of a risk transmission line belonging to a target power grid in an easy-to-ice area with the numbers of each transmission line corresponding to other types of transmission lines.

[0080] Further, the corresponding numbers of each risky transmission line in each type of transmission line belonging to each easy-to-ice area are matched with the corresponding numbers of each type of transmission line marked in the spatial distribution map of power facilities of the target power grid to obtain the location of each risky transmission line in each type of transmission line belonging to each easy-to-ice area.

[0081] The warning levels and numbers corresponding to the risky transmission line types belonging to the target power grids in each icing-prone area are sent to the target power grid control center.

[0082] The present invention, by combining the spatial distribution map of the power facilities of the target power grid, accurately and quickly obtains the positions of each pole belonging to each icing-prone area where there is a risk of pole collapse and each transmission line belonging to each icing-prone area of ​​the target power grid where there is a risk of failure, and issues early warning, which helps to save time and improve the efficiency of fault maintenance.

[0083] The above contents are merely examples and explanations of the concept of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the concept of the invention or exceed the scope defined by the present invention, they shall all fall within the protection scope of the present invention.

Claims

1. A power grid flood prevention and disaster relief monitoring and early warning system based on geographic meteorological information, characterized by: include: A meteorological information acquisition module is used to divide the area where the target power grid is located into sub-areas according to predefined rules, obtain the sub-areas of the area where the target power grid is located, and obtain meteorological information of each sub-area; Meteorological information analysis module, used to analyze the freezing index of each sub-area, so as to obtain each ice-prone area; The power grid icing monitoring module is used to monitor the poles and transmission lines between the poles in real time, and obtain the ice thickness and pole inclination of the poles in the target power grid in each icing-prone area, as well as the ice thickness, sag, temperature and current of the transmission lines in the target power grid in each icing-prone area; The pole collapse risk analysis module is used to analyze the collapse risk coefficient of each pole in each icing-prone area and determine the collapse risk of each pole in each icing-prone area; The specific analysis method of the collapse risk coefficient of each pole in each icing-prone area is as follows: Extract the ice thickness and inclination of each pole in the target power grid in each icing-prone area, and analyze the collapse risk coefficient of each pole in each icing-prone area ,in Respectively The target power grid in the icing-prone area belongs to The ice thickness and inclination of each pole, is the permissible ice thickness of the poles under the target grid safety operation conditions. Extracted from the database The target power grid in the icing-prone area belongs to The height of the pole, , is the number of each pole, is the allowable tilt deviation distance of the set pole, is a natural constant; The collapse risk coefficient of each pole belonging to each easy-to-ice-covered area is compared with the set collapse risk coefficient threshold. If the collapse risk coefficient of a pole belonging to a certain easy-to-ice-covered area is greater than or equal to the set collapse risk coefficient threshold, the collapse risk of the pole belonging to the ice-covered area is recorded as having a collapse risk, and then the collapse risk of each pole belonging to each easy-to-ice-covered area with a pole collapse risk is counted; The transmission line fault risk analysis module is used to analyze the fault risk coefficient of each transmission line belonging to the target power grid in each icing-prone area, and determine the fault risk of each transmission line belonging to the target power grid in each icing-prone area; The risk warning module is used to issue warnings to each pole in each icing-prone area with a risk of pole collapse and each transmission line in each icing-prone area target power grid with a risk of failure; The information base is used to store the height of each pole belonging to the target power grid in each sub-area, the standard temperature and standard current of the transmission line when the target power grid is operating normally, the spatial distribution map of the power facilities of the target power grid, and the corresponding number sets of various types of transmission lines.

2. The power grid flood prevention and disaster relief monitoring and early warning system based on geographic meteorological information according to claim 1 is characterized by: The meteorological information of each sub-area includes snowfall, rainfall and weather temperature.

3. The power grid flood prevention and disaster relief monitoring and early warning system based on geographic meteorological information according to claim 2 is characterized by: The specific analysis method of the freezing index of each sub-region is as follows: Extract the snowfall, rainfall and weather temperature of each sub-region and analyze the freezing index of each sub-region ,in Respectively Snowfall, rainfall and weather temperature in each sub-region, are the correction factors corresponding to the set unit snowfall and unit rainfall, is the compensation value for the set corrected weather temperature. are the weight coefficients corresponding to the freezing index corresponding to the set snowfall, rainfall and weather temperature, , is the number of each sub-region; The freezing index of each sub-area is compared with the preset freezing coefficient threshold, and the sub-areas whose freezing index is greater than or equal to the preset freezing index threshold are screened out and recorded as easy-to-ice regions, and they are numbered in sequence. .

4. The power grid flood prevention and disaster relief monitoring and early warning system based on geographic meteorological information according to claim 3 is characterized by: The specific analysis method of the failure risk coefficient of each transmission line belonging to the target power grid in each icing-prone area is as follows: Extract ice thickness, sag, temperature and current of each transmission line belonging to each target grid in each icing-prone area, and analyze the failure risk coefficient of each transmission line belonging to each target grid in each icing-prone area ,in Respectively The target power grid in the icing-prone area belongs to Ice thickness, sag, temperature and current of each transmission line, are the permissible ice thickness and permissible sag of the transmission line under the target power grid safe operation conditions. are the standard temperature and standard current of the transmission line when the target power grid is operating normally, extracted from the information database. is the temperature ratio threshold of the transmission line under the target power grid safe operation condition. , is the number of each transmission line; The fault risk coefficient of each transmission line belonging to the target power grid in each easy-to-ice area is compared with the set fault risk coefficient threshold. If the fault risk coefficient of a transmission line belonging to a target power grid in a easy-to-ice area is greater than or equal to the set fault risk coefficient threshold, the failure risk of the transmission line belonging to the target power grid in the easy-to-ice area is recorded as having a failure risk, and then the transmission lines belonging to the target power grid in each easy-to-ice area with a failure risk are statistically obtained.

5. The power grid flood prevention and disaster relief monitoring and early warning system based on geographic meteorological information according to claim 4 is characterized by: The specific method for obtaining the ice thickness of each transmission line belonging to the target power grid in each icing-prone area is as follows: The transmission lines belonging to the target power grid in each icing-prone area are equally divided to obtain the sub-line sections corresponding to the transmission lines belonging to the target power grid in each icing-prone area; The ice thickness of each sub-line section corresponding to each transmission line of each target power grid in each icing-prone area is obtained, and they are arranged in order of size. After removing the data corresponding to the first and last, the average ice thickness of each transmission line belonging to the target power grid in each icing-prone area is calculated to obtain the average ice thickness of each transmission line belonging to the target power grid in each icing-prone area, which is recorded as the ice thickness of each transmission line belonging to the target power grid in each icing-prone area.

6. The power grid flood prevention and disaster relief monitoring and early warning system based on geographic meteorological information according to claim 5 is characterized by: The specific method for obtaining the sag of each transmission line belonging to the target power grid in each icing-prone area is as follows: Take the horizontal line between the poles of the target power grid in each icing-prone area as the horizontal axis, draw a vertical line through the midpoint of the horizontal line and use it as the vertical axis, and establish a two-dimensional coordinate system with the midpoint of the horizontal line as the origin; Obtain the coordinates of the supporting points on the left and right poles of each transmission line belonging to the target power grid in each icing-prone area, which are recorded as and , obtain the coordinates of the lowest points of the conductors of each transmission line of the target power grid in each icing-prone area, recorded as , further obtain the distance between the vertical point where the lowest point of the conductor of each transmission line belonging to the target power grid in each icing-prone area falls on the horizontal axis and the poles on its left and right sides; Analyze the sag of each transmission line in each target grid in each icing-prone area ,in Respectively The target power grid in the icing-prone area belongs to The length of the vertical point where the lowest point of the conductor of a transmission line falls on the horizontal axis and the distance between it and the poles on its left and right sides.

7. The power grid flood prevention and disaster relief monitoring and early warning system based on geographic meteorological information according to claim 1 is characterized by: The specific operation method of providing early warning for each pole in each icing-prone area with a risk of pole collapse is as follows: Extract the poles belonging to each icing-prone area with the risk of pole collapse, record them as risk poles belonging to each icing-prone area, and then obtain their corresponding numbers; The spatial distribution map of the power facilities of the target power grid is retrieved from the information database, and the corresponding numbers of the risky poles in each easy-to-ice area are matched with the corresponding numbers of the poles marked in the spatial distribution map of the power facilities of the target power grid to obtain the locations of the risky poles in each easy-to-ice area, send them to the control center of the target power grid, and issue an early warning.

8. The power grid flood prevention and disaster relief monitoring and early warning system based on geographic meteorological information according to claim 7 is characterized by: The specific operation method of providing early warning for each transmission line belonging to each target power grid in each icing-prone area with a risk of failure is as follows: Extract the transmission lines belonging to the target power grids in the icing-prone areas with failure risks, record them as the risk transmission lines belonging to the target power grids in the icing-prone areas, and then obtain their corresponding numbers; Match the corresponding numbers of each risky transmission line belonging to each target power grid in each icing-prone area with the corresponding number sets of each type of transmission line stored in the information database to obtain the types of risky transmission lines belonging to each target power grid in each icing-prone area, and compare them with the corresponding warning levels of each type of transmission line extracted from the information database to obtain the corresponding warning levels of each risky transmission line type belonging to each target power grid in each icing-prone area; Further, the corresponding numbers of each risky transmission line in each type of transmission line belonging to each icing-prone area are matched with the corresponding numbers of each type of transmission line marked in the power facility spatial distribution map of the target power grid to obtain the location of each risky transmission line in each type of transmission line belonging to each icing-prone area; The warning levels and numbers corresponding to the risky transmission line types belonging to the target power grids in each icing-prone area are sent to the target power grid control center.

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