CN113095718A - Method and system for confirming maintenance plan of power transmission line - Google Patents
Method and system for confirming maintenance plan of power transmission line Download PDFInfo
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Abstract
The embodiment of the invention discloses a method and a system for confirming a maintenance plan of a power transmission line. The power transmission line comprises a plurality of line units, and the maintenance plan confirming method comprises the following steps: acquiring icing thickness information, lightning frequency information and typhoon strength information of each line unit; determining a risk value of each line unit according to the icing thickness information, the lightning frequency information and the typhoon strength information; determining a comprehensive risk value of the power transmission line according to the risk value of each line unit; and determining a maintenance plan according to the risk value of each line unit and the comprehensive risk value of the power transmission line. Through the risk value determination of each circuit unit under the working conditions of icing, lightning stroke and typhoon and the comprehensive risk value determination of the whole output circuit, the state of the output circuit is effectively judged, the maintenance plan is determined, the maintenance efficiency is improved, and the maintenance cost is reduced.
Description
Technical Field
The embodiment of the invention relates to a power transmission line technology, in particular to a method and a system for confirming a maintenance plan of a power transmission line.
Background
Overhead transmission lines mostly operate in open fields, mountainous areas and fields, the coverage area of the overhead transmission lines is wide, the ecological environment changes infrequently, and the overhead transmission lines are often influenced by severe weather such as strong wind, heavy fog, heavy rain, ice and snow and the like. The problems of excessive icing, bird damage, environmental pollution and temperature change, building houses near the wires, digging soil beside the tower foundation, ultrahigh trees near the lines and the like cause various faults of the power transmission lines during operation.
Along with the development of economy, the length of transmission line construction increases gradually, and transmission line overhauls work at present and has not had the problem of highlighting key maintenance part to whole circuit overhauls work to the operation maintenance efficiency is low, often causes the human cost extravagant.
Disclosure of Invention
The embodiment of the invention provides a method and a system for confirming a maintenance plan of a power transmission line, which are used for realizing maintenance of an output circuit under working conditions of icing, thunder and typhoon and effectively improving maintenance efficiency.
In a first aspect, an embodiment of the present invention provides a method for confirming a maintenance plan of a power transmission line, where the power transmission line includes a plurality of line units, and the method includes:
acquiring icing thickness information, lightning frequency information and typhoon strength information of each line unit;
determining a risk value of each line unit according to the icing thickness information, the lightning frequency information and the typhoon strength information;
determining a comprehensive risk value of the power transmission line according to the risk value of each line unit;
and determining a maintenance plan according to the risk value of each line unit and the comprehensive risk value of the power transmission line.
Optionally, determining a risk value of each line unit according to the ice coating thickness information, the lightning frequency information, and the typhoon strength information includes:
respectively determining a weight value of the icing thickness information, a weight value of the lightning frequency information and a weight value of the typhoon intensity information;
determining a risk value of each line unit according to the icing thickness information, the weight value of the icing thickness information, the lightning frequency information, the weight value of the lightning frequency information, the typhoon intensity information and the weight value of the typhoon intensity information;
the risk value for each of said line units is given by the following formula,
ri＝ahi+bfi+cni，
wherein r isiIs the risk value of the ith line unit, hiIs the ice coating thickness of the ith line unit, fiIs the lightning frequency of the ith line unit, niThe method comprises the steps that wind pressure data of the ith line unit are obtained, a is a weight value of icing thickness, b is a weight value of lightning frequency, c is a weight value of the wind pressure data, and i is a positive integer greater than or equal to 1.
Optionally, determining the comprehensive risk value of the power transmission line according to the risk value of each line unit includes:
respectively determining a risk weight value of each line unit;
determining a comprehensive risk value of the power transmission line according to the risk value of each line unit and the risk weight value of each line unit;
the comprehensive risk value of the power transmission line is obtained by the following formula,
wherein R is the comprehensive risk value of the power transmission line, diIs the risk weight value of the ith line unit, riK is a positive integer for the risk value of the ith line element.
Optionally, determining a maintenance plan according to the risk value of each line unit and the comprehensive risk value of the power transmission line includes:
determining a maintenance plan of each line unit according to the risk value of each line unit;
and determining a maintenance plan of the power transmission line according to the comprehensive risk value of the power transmission line.
Optionally, if the risk value of the line unit is greater than a preset risk value threshold, the line unit is overhauled according to the overhaul plan of the line unit;
and if the comprehensive risk value of the power transmission line is greater than a preset comprehensive risk value threshold value, overhauling the power transmission line according to the overhauling plan of the power transmission line.
In a second aspect, an embodiment of the present invention further provides a maintenance plan confirmation system for a power transmission line, where the power transmission line includes a plurality of line units, and the maintenance plan confirmation system includes an information acquisition module and an information processing module;
the information acquisition module is used for acquiring icing thickness information, lightning frequency information and typhoon intensity information of each line unit;
the information processing module is electrically connected with the information acquisition module and is used for acquiring the icing thickness information, the lightning frequency information and the typhoon strength information of each line unit, determining the risk value of each line unit according to the icing thickness information, the lightning frequency information and the typhoon strength information, determining the comprehensive risk value of the power transmission line according to the risk value of each line unit, and determining the maintenance plan according to the risk value of each line unit and the comprehensive risk value of the power transmission line.
Optionally, the information obtaining module includes an icing thickness information obtaining submodule;
the icing thickness information acquisition submodule comprises an icing thickness related information acquisition unit and an icing thickness information determination unit;
the ice coating thickness related information acquisition unit comprises a suspension string, a temperature sensor and an inclination angle sensor, wherein the inclination angle sensor is arranged at the lower end of the suspension string;
the icing thickness information determining unit comprises a first program operation subunit and a first control subunit;
the first program operation subunit is respectively and electrically connected with the temperature sensor, the inclination angle sensor and the first control subunit, and the first control subunit is in communication connection with the information processing module;
the first program operation subunit is configured to determine the icing thickness information according to the temperature information sensed by the temperature sensor and the inclination information sensed by the inclination sensor, and the first control subunit is configured to transmit the icing thickness information to the information processing module.
Optionally, the ice thickness information obtaining submodule further includes a coil and a micro power supply, the coil is used for converting a magnetic field existing around the ice thickness information obtaining submodule into electric energy, and the electric energy is stored in the micro power supply, and the micro power supply is used for supplying power to the ice thickness information obtaining submodule.
Optionally, the information acquisition module includes a lightning frequency information acquisition submodule;
the lightning frequency information acquisition submodule comprises a lightning frequency related information acquisition unit and a lightning frequency information determination unit;
the lightning frequency related information acquisition unit comprises a Rogowski coil and a GPR timing subunit;
the lightning stroke frequency information determining unit comprises a second program operation subunit and a second control subunit;
the second program operation subunit is electrically connected with the Rogowski coil and the GPR timing subunit respectively, and the second control subunit is in communication connection with the information processing module;
the second program operation subunit is configured to determine the lightning frequency information according to the high-frequency traveling wave current waveform information acquired by the rogowski coil and the time information of the high-frequency traveling wave current waveform acquired by the GPR timing subunit, and the second control subunit is configured to transmit the lightning frequency information to the information processing module.
Optionally, the information acquisition module includes a typhoon intensity information acquisition submodule;
the typhoon intensity information acquisition submodule comprises a typhoon intensity related information acquisition unit and a typhoon intensity information determination unit;
the typhoon intensity related information acquisition unit comprises a wind pressure sensor;
the typhoon intensity information determining unit comprises a third program operation subunit and a third control subunit;
the third program operation subunit is electrically connected with the wind pressure sensor, and the third control subunit is in communication connection with the information processing module;
the third program operation subunit is configured to determine the typhoon intensity information according to the wind pressure data information sensed by the wind pressure sensor, and the third control subunit is configured to transmit the typhoon intensity information to the information processing module.
The invention provides a method for confirming a maintenance plan of a power transmission line, wherein the power transmission line comprises a plurality of line units, and the method for confirming the maintenance plan comprises the following steps: acquiring icing thickness information, lightning frequency information and typhoon strength information of each line unit; determining a risk value of each line unit according to the icing thickness information, the lightning frequency information and the typhoon strength information; determining a comprehensive risk value of the power transmission line according to the risk value of each line unit; and determining a maintenance plan according to the risk value of each line unit and the comprehensive risk value of the power transmission line. By acquiring icing thickness information, lightning frequency information and typhoon intensity information of each line unit under the working conditions of icing, lightning stroke and typhoon, determining the risk value of each line unit and determining the comprehensive risk value of the whole output line according to the icing thickness information, the lightning frequency information and the typhoon intensity information, effectively judging the state of the output line, determining an overhaul plan, improving the overhaul efficiency and reducing the overhaul cost.
Drawings
To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description will be given below of the drawings required for the embodiments or the technical solutions in the prior art, and it is obvious that the drawings in the following description, although being some specific embodiments of the present invention, can be extended and extended to other structures and drawings by those skilled in the art according to the basic concepts of the device structure, the driving method and the manufacturing method disclosed and suggested by the various embodiments of the present invention, without making sure that these should be within the scope of the claims of the present invention.
Fig. 1 is a schematic flow structure diagram of a method for confirming a maintenance plan of a power transmission line according to a first embodiment of the present invention;
fig. 2 is a schematic structural diagram of a maintenance plan confirmation system for a power transmission line according to a second embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described through embodiments with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the basic idea disclosed and suggested by the embodiments of the present invention, are within the scope of the present invention.
Example one
Fig. 1 is a schematic flow structure diagram of a method for confirming a maintenance plan of a power transmission line according to an embodiment of the present invention, and the technical scheme of the embodiment is suitable for maintenance conditions of the power transmission line. The method can be executed by a maintenance plan confirmation system of the power transmission line, and the device can be realized in a software and/or hardware mode. The power transmission line comprises a plurality of line units, and the maintenance plan confirming method comprises the following steps:
s101, acquiring icing thickness information, lightning frequency information and typhoon intensity information of each line unit.
And S102, determining the risk value of each line unit according to the icing thickness information, the lightning frequency information and the typhoon strength information.
And S103, determining a comprehensive risk value of the power transmission line according to the risk value of each line unit.
And S104, determining a maintenance plan according to the risk value of each line unit and the comprehensive risk value of the power transmission line.
The line units are divided according to the equipment or the interval of the power transmission line, and because the positions of the line units in the output line are different, the ice coating thickness information, the lightning frequency information and the typhoon strength information which are acquired by the line units under the working conditions of ice coating, lightning strike and typhoon are different, and the accuracy of detection can be effectively ensured by taking each line unit as a detection object. And the external operation and maintenance center can determine the risk value of each line unit through calculation processing according to the ice coating thickness information, the lightning frequency information and the typhoon strength information. The risk evaluation takes a risk value as an index, the probability of the failure of the possibly lost assets and equipment is comprehensively considered, and the risk value can be obtained by multiplying the average failure rate and the asset loss value of each line unit under the working conditions of icing, lightning strike and typhoon. The risk value of each line unit is calculated by the outside maintenance micro-center to process the comprehensive risk value of the power transmission line, because the output lines have importance levels, the levels are different and correspond to different weighted values, and the comprehensive risk value can be obtained by multiplying the risk value of each line unit under the working conditions of icing, lightning strike and typhoon by the corresponding weighted value of each line. The external operation center determines a corresponding maintenance plan according to the risk value of each line unit and the comprehensive risk value of the output line,
according to the technical scheme, the icing thickness information, the lightning frequency information and the typhoon strength information of the units of each line under the working conditions of icing, lightning stroke and typhoon are obtained, so that the risk value of each line unit and the comprehensive risk value of the whole output line are determined, the line unit with the fault to be maintained is accurately determined, the working efficiency of the follow-up maintenance process is ensured, and the maintenance cost is reduced.
Optionally, determining a risk value of each line unit according to the ice coating thickness information, the lightning frequency information, and the typhoon strength information includes:
respectively determining a weight value of icing thickness information, a weight value of lightning frequency information and a weight value of typhoon intensity information;
determining a risk value of each line unit according to the icing thickness information, the weight value of the icing thickness information, the lightning frequency information, the weight value of the lightning frequency information, the typhoon intensity information and the weight value of the typhoon intensity information;
the risk value of each line unit is given by the following formula,
ri＝ahi+bfi+cni，
wherein r isiIs the risk value of the ith line unit, hiIs the ice coating thickness of the ith line unit, fiIs the lightning frequency of the ith line unit, niThe method comprises the steps that wind pressure data of the ith line unit are obtained, a is a weight value of icing thickness, b is a weight value of lightning frequency, c is a weight value of the wind pressure data, and i is a positive integer greater than or equal to 1.
Wherein, icing thickness's weighted value, the weighted value of thunderbolt frequency and the weighted value of wind pressure data can carry out the difference according to the important degree of circuit unit and set for, circuit unit can include the important circuit unit of super level, the important circuit unit of one-level, the important circuit unit of second grade, the important circuit unit of tertiary, normal important and general circuit unit equipment, for example: the weight value that super important circuit unit set up icing thickness, the weight value of thunderbolt frequency and the weight value of wind pressure data are 8, and the weight value that one-level important circuit unit set up icing thickness, the weight value of thunderbolt frequency and the weight value of wind pressure data are 7, and so on second grade, tertiary, normal important and general circuit unit do respectively: 6,5,4,3. And multiplying the weight value of the icing thickness of the line unit by the corresponding icing thickness, multiplying the weight value of the lightning frequency by the corresponding lightning frequency, multiplying the weight value of the wind pressure data by the corresponding wind pressure data, and adding the three multiplied numerical values to obtain the risk value of the line unit.
Optionally, determining a comprehensive risk value of the power transmission line according to the risk value of each line unit includes:
respectively determining the risk weight value of each line unit;
determining a comprehensive risk value of the power transmission line according to the risk value of each line unit and the risk weight value of each line unit;
the comprehensive risk value of the transmission line is obtained by the following formula,
wherein R is the comprehensive risk value of the transmission line, diIs the risk weight value of the ith line unit, riK is a positive integer for the risk value of the ith line element.
And the risk value evaluated by the risk of each line unit is multiplied by the risk weight value of each line unit, so that the comprehensive risk value of the output line can be calculated. The calculation engineering is completed through the external operation and maintenance center support, and the artificial workload is reduced. And (4) making a power transmission line maintenance plan according to the comprehensive risk value of the output line and the seasonal characteristics.
Optionally, determining the maintenance plan according to the risk value of each line unit and the comprehensive risk value of the power transmission line includes:
determining a maintenance plan of each line unit according to the risk value of each line unit;
and determining a maintenance plan of the power transmission line according to the comprehensive risk value of the power transmission line.
The maintenance plan can be adjusted according to actual conditions, maintenance is carried out according to different zones at different times in different environments, maintenance work is carried out according to the state of an output line, maintenance can be carried out in a fixed time period, and maintenance time and places are not restricted. In order to guarantee the accuracy and the high efficiency of the maintenance process, the maintenance plan of each line unit is determined according to the risk value of each line unit, so that the line unit with the risk to be maintained corresponds to the maintenance plan. And a corresponding targeted maintenance plan is formulated according to the comprehensive risk value calculated by the output line under the working conditions of ice coating, lightning stroke and typhoon, so that the damage of the output line to external force for a long time is reduced, and safety accidents are caused.
Optionally, if the risk value of the line unit is greater than the preset risk value threshold, the line unit is overhauled according to the overhaul plan of the line unit;
and if the comprehensive risk value of the power transmission line is greater than the preset comprehensive risk value threshold value, the power transmission line is overhauled according to the overhaul plan of the power transmission line.
And when the risk value of a certain line unit is greater than the preset risk value threshold value, the line unit has a risk to be overhauled, and the line unit is overhauled according to the overhaul plan of the line unit. And if the comprehensive risk value of the output line calculated according to each line unit is greater than the preset comprehensive risk value threshold value, the output line has a safety risk, and the power transmission line is overhauled according to the overhaul plan of the power transmission line, so that the safety of the output line is ensured.
Example two
Fig. 2 is a schematic structural diagram of a maintenance plan confirmation system for a power transmission line according to a second embodiment of the present invention, where as shown in the figure, the power transmission line includes a plurality of line units, and the maintenance plan confirmation system includes an information acquisition module 201 and an information processing module 202;
the information acquisition module 201 is configured to acquire icing thickness information, lightning frequency information, and typhoon intensity information of each line unit;
the information processing module 202 is electrically connected to the information obtaining module 201, and is configured to obtain icing thickness information, lightning frequency information, and typhoon intensity information of each line unit, determine a risk value of each line unit according to the icing thickness information, the lightning frequency information, and the typhoon intensity information, determine a comprehensive risk value of the power transmission line according to the risk value of each line unit, and determine an overhaul plan according to the risk value of each line unit and the comprehensive risk value of the power transmission line.
The information acquisition module 201 may be different types of sensors, and acquires icing thickness information, lightning frequency information, and typhoon intensity information of each line unit. Information processing module 202 can be outside fortune dimension center, and outside fortune dimension center includes large-scale central processing unit or singlechip, carries out analysis processes to icing thickness information, thunderbolt frequency information and typhoon intensity information that gather, and is high-efficient convenient, uses manpower sparingly.
Optionally, the information obtaining module 201 includes an icing thickness information obtaining sub-module 2011;
the icing thickness information obtaining submodule 2011 includes an icing thickness related information collecting unit 211 and an icing thickness information determining unit 212;
the ice coating thickness related information acquisition unit 211 comprises a suspension string 2112, a temperature sensor 2113 and an inclination angle sensor 2114, wherein the inclination angle sensor 2114 is arranged at the lower end of the suspension string 2112;
the icing thickness information determining unit 212 includes a first program operating subunit 2121 and a first control subunit 2122;
the first program operation subunit 2121 is electrically connected with the temperature sensor 2113, the inclination angle sensor 2114 and the first control subunit 2122 respectively, and the first control subunit 2122 is in communication connection with the information processing module 202;
the first program operation subunit 2121 is configured to determine ice coating thickness information according to the temperature information sensed by the temperature sensor 2113 and the inclination information sensed by the inclination sensor 2114, and the first control subunit 2122 is configured to transmit the ice coating thickness information to the information processing module 202.
When the icing period comes, the inclination angle sensor 2114 senses inclination angle change of the suspension string 2112 connected with the inclination angle sensor, and in combination with temperature change sensed by the temperature sensor 2113, parameters of the inclination angle change and the temperature change are transmitted to the first program operation subunit 2121 as input signals, ice coating thickness information on the conducting wires of the line units is obtained after calculation processing through the first program operation subunit 2121, and the ice coating thickness information of each line unit is sent to the information processing module 202 through the first control subunit 2122 in time, so that the information processing module 202 can analyze and process the ice coating thickness information of each line unit in time, and the safety state of each line unit can be known in real time.
Optionally, the ice thickness information obtaining submodule 2011 further includes a coil 2115 and a micro power supply 2116, the coil 2115 is configured to convert a magnetic field existing around the ice thickness information obtaining submodule 2011 into electric energy, and the electric energy is stored in the micro power supply 2116, and the micro power supply 2116 is configured to supply power to the ice thickness information obtaining submodule 2011.
The ice coating thickness information acquisition submodule 2011 further comprises a shell and a lead, the shell is arranged on the lead, the coil 2115 and the micro power supply 2116 are arranged inside the shell, the coil 2115 can convert a magnetic field existing around the lead of the ice coating thickness information acquisition submodule 2011 into an induced current, and electric energy is stored in the micro power supply 2116 after being filtered by the rectifier, so that the micro power supply 2116 supplies power to all components in the ice coating thickness information acquisition submodule 2011, and normal work of all the components is guaranteed.
Optionally, the information obtaining module 201 includes a lightning stroke frequency information obtaining sub-module 2012;
the lightning frequency information acquisition sub-module 2012 comprises a lightning frequency related information acquisition unit 221 and a lightning frequency information determination unit 222;
the lightning frequency related information acquisition unit 221 comprises a rogowski coil 2211 and a GPR timing subunit 2212;
the lightning frequency information determination unit 222 includes a second program operation subunit 2221 and a second control subunit 2222;
the second program operation subunit 2221 is electrically connected with the rogowski coil 2211 and the GPR timing subunit 2212 respectively, and the second control subunit 2222 is in communication connection with the information processing module 202;
the second program operation subunit 2221 is configured to determine lightning frequency information according to the high-frequency traveling wave current waveform information acquired by the rogowski coil 2211 and the time information of the high-frequency traveling wave current waveform acquired by the GPR timing subunit 2212, and the second control subunit 2222 is configured to transmit the lightning frequency information to the information processing module 202.
The lightning frequency information acquisition sub-modules 2012 are required to be installed on the power transmission line in a distributed manner, each 10-15 km is a monitoring point, each of three ABC phases at the monitoring point is provided with one lightning frequency information acquisition sub-module 2012, the Rogowski coil 2211 in the lightning frequency related information acquisition unit 221 is used for acquiring high-frequency traveling wave current waveform information, and the GPR timing sub-unit 2212 records the acquisition time of the high-frequency traveling wave circuit waveform information. The required lightning frequency related information comprises traveling wave current waveform information of the power transmission line and the acquisition time of the corresponding traveling wave current waveform information. The transmission line struck by lightning can comprise three different types of lightning arrester wires, tower and transmission conductors struck by lightning, and the traveling wave current waveform characteristics of different lightning types are different. The lightning frequency related information of the power transmission line collected by the lightning frequency related information collection unit 221 is monitored in real time by the lightning frequency information determination unit 222 and transmitted. The second program operation subunit 2221 extracts the information related to the lightning strike frequency of the power transmission line to determine the lightning strike frequency information, the second control subunit 2222 is configured to transmit the determined lightning strike frequency information to the information processing unit 202, and the information processing unit 202 identifies the type of the power transmission line that is struck by lightning and locates a lightning strike point, calculates the lightning strike frequency of each line unit in the power transmission line, and draws a lightning strike frequency distribution map of the power transmission line.
Optionally, the information obtaining module 201 includes a typhoon intensity information obtaining submodule 2013;
the typhoon intensity information acquisition submodule 2013 comprises a typhoon intensity related information acquisition unit 231 and a typhoon intensity information determination unit 232;
the typhoon intensity related information acquisition unit 231 includes a wind pressure sensor 2311;
the typhoon intensity information determining unit 232 includes a third program operation subunit 2321 and a third control subunit 2322;
the third program operation subunit 2321 is electrically connected with the wind pressure sensor 2311, and the third control subunit 2322 is in communication connection with the information processing module 202;
the third program operation subunit 2321 is configured to determine typhoon intensity information according to the wind pressure data information sensed by the wind pressure sensor 2311, and the third control subunit 2322 is configured to transmit the typhoon intensity information to the information processing module 202.
When typhoon comes, the wind pressure sensors 2311 in the typhoon intensity related information acquisition unit 231 are utilized, the wind pressure sensors 2311 are installed on the circuit units, the pressure of the wind pressure sensors 2311, which is subjected to external typhoon, directly acts on the diaphragms of the wind pressure sensors 2311, so that the diaphragms generate micro-displacement in proportion to the medium pressure, the resistance of the wind pressure sensors 2311 is changed, wind pressure data corresponding to the pressure at the moment is converted and output, the wind pressure data are transmitted to the third program operation subunit 2321, the third program operation subunit 2321 determines typhoon intensity information according to the wind pressure data, the third program operation subunit 2322 transmits the typhoon intensity information to the information processing module 202, and the information processing module 202 judges the safety state of each output circuit according to the typhoon intensity information of each circuit unit. The information processing module 202 determines the risk value of each line unit and the comprehensive risk value of the whole output line by combining the icing thickness information, the lightning frequency information and the typhoon strength information, determines the current state of each line unit and the whole output line, determines a proper maintenance plan, highlights maintenance emphasis, improves maintenance efficiency and reduces maintenance cost.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A method for confirming a maintenance plan of a power transmission line, the power transmission line comprising a plurality of line units, the method comprising:
acquiring icing thickness information, lightning frequency information and typhoon strength information of each line unit;
determining a risk value of each line unit according to the icing thickness information, the lightning frequency information and the typhoon strength information;
determining a comprehensive risk value of the power transmission line according to the risk value of each line unit;
and determining a maintenance plan according to the risk value of each line unit and the comprehensive risk value of the power transmission line.
2. The repair plan confirming method according to claim 1, wherein determining the risk value of each of the line units based on the icing thickness information, the lightning frequency information, and the typhoon intensity information includes:
respectively determining a weight value of the icing thickness information, a weight value of the lightning frequency information and a weight value of the typhoon intensity information;
determining a risk value of each line unit according to the icing thickness information, the weight value of the icing thickness information, the lightning frequency information, the weight value of the lightning frequency information, the typhoon intensity information and the weight value of the typhoon intensity information;
the risk value for each of said line units is given by the following formula,
ri＝ahi+bfi+cni
wherein r isiIs the risk value of the ith line unit, hiIs the ice coating thickness of the ith line unit, fiFrequency of lightning strikes for the ith line unit，niThe method comprises the steps that wind pressure data of the ith line unit are obtained, a is a weight value of icing thickness, b is a weight value of lightning frequency, c is a weight value of the wind pressure data, and i is a positive integer greater than or equal to 1.
3. The service plan validation method of claim 1, wherein determining the composite risk value for the transmission line based on the risk values for each of the line units comprises:
respectively determining a risk weight value of each line unit;
determining a comprehensive risk value of the power transmission line according to the risk value of each line unit and the risk weight value of each line unit;
the comprehensive risk value of the power transmission line is obtained by the following formula,
wherein R is the comprehensive risk value of the power transmission line, diIs the risk weight value of the ith line unit, riK is a positive integer for the risk value of the ith line element.
4. The method for confirming a service plan according to claim 1, wherein determining a service plan according to the risk value of each line unit and the integrated risk value of the transmission line comprises:
determining a maintenance plan of each line unit according to the risk value of each line unit;
and determining a maintenance plan of the power transmission line according to the comprehensive risk value of the power transmission line.
5. The maintenance plan confirming method according to claim 4, wherein if the risk value of the line unit is greater than a preset risk value threshold, the line unit is maintained according to the maintenance plan of the line unit;
and if the comprehensive risk value of the power transmission line is greater than a preset comprehensive risk value threshold value, overhauling the power transmission line according to the overhauling plan of the power transmission line.
6. The maintenance plan confirming system of the power transmission line is characterized by comprising a plurality of line units, and comprises an information acquisition module and an information processing module;
the information acquisition module is used for acquiring icing thickness information, lightning frequency information and typhoon intensity information of each line unit;
the information processing module is electrically connected with the information acquisition module and is used for acquiring the icing thickness information, the lightning frequency information and the typhoon strength information of each line unit, determining the risk value of each line unit according to the icing thickness information, the lightning frequency information and the typhoon strength information, determining the comprehensive risk value of the power transmission line according to the risk value of each line unit, and determining the maintenance plan according to the risk value of each line unit and the comprehensive risk value of the power transmission line.
7. The service plan validation system of claim 6, wherein the information acquisition module includes an icing thickness information acquisition sub-module;
the icing thickness information acquisition submodule comprises an icing thickness related information acquisition unit and an icing thickness information determination unit;
the ice coating thickness related information acquisition unit comprises a suspension string, a temperature sensor and an inclination angle sensor, wherein the inclination angle sensor is arranged at the lower end of the suspension string;
the icing thickness information determining unit comprises a first program operation subunit and a first control subunit;
the first program operation subunit is respectively and electrically connected with the temperature sensor, the inclination angle sensor and the first control subunit, and the first control subunit is in communication connection with the information processing module;
the first program operation subunit is configured to determine the icing thickness information according to the temperature information sensed by the temperature sensor and the inclination information sensed by the inclination sensor, and the first control subunit is configured to transmit the icing thickness information to the information processing module.
8. The service plan validation system of claim 7, wherein the ice coating thickness information acquisition submodule further comprises a coil and a micro power supply, wherein the coil is configured to convert a magnetic field existing around the ice coating thickness information acquisition submodule into electrical energy to be stored in the micro power supply, and the micro power supply is configured to supply power to the ice coating thickness information acquisition submodule.
9. The service plan validation system of claim 6, wherein the information acquisition module includes a lightning strike frequency information acquisition sub-module;
the lightning frequency information acquisition submodule comprises a lightning frequency related information acquisition unit and a lightning frequency information determination unit;
the lightning frequency related information acquisition unit comprises a Rogowski coil and a GPR timing subunit;
the lightning stroke frequency information determining unit comprises a second program operation subunit and a second control subunit;
the second program operation subunit is electrically connected with the Rogowski coil and the GPR timing subunit respectively, and the second control subunit is in communication connection with the information processing module;
the second program operation subunit is configured to determine the lightning frequency information according to the high-frequency traveling wave current waveform information acquired by the rogowski coil and the time information of the high-frequency traveling wave current waveform acquired by the GPR timing subunit, and the second control subunit is configured to transmit the lightning frequency information to the information processing module.
10. The service plan validation system of claim 6, wherein the information acquisition module includes a typhoon intensity information acquisition sub-module;
the typhoon intensity information acquisition submodule comprises a typhoon intensity related information acquisition unit and a typhoon intensity information determination unit;
the typhoon intensity related information acquisition unit comprises a wind pressure sensor;
the typhoon intensity information determining unit comprises a third program operation subunit and a third control subunit;
the third program operation subunit is electrically connected with the wind pressure sensor, and the third control subunit is in communication connection with the information processing module;
the third program operation subunit is configured to determine the typhoon intensity information according to the wind pressure data information sensed by the wind pressure sensor, and the third control subunit is configured to transmit the typhoon intensity information to the information processing module.
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