CN111146866B - Power transmission channel control method - Google Patents
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J13/00—Circuit arrangements for providing remote indication of network conditions, e.g. an instantaneous record of the open or closed condition of each circuitbreaker in the network; Circuit arrangements for providing remote control of switching means in a power distribution network, e.g. switching in and out of current consumers by using a pulse code signal carried by the network
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02B90/20—Smart grids as enabling technology in buildings sector
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S40/00—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them
- Y04S40/12—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment
- Y04S40/124—Systems for electrical power generation, transmission, distribution or end-user application management characterised by the use of communication or information technologies, or communication or information technology specific aspects supporting them characterised by data transport means between the monitoring, controlling or managing units and monitored, controlled or operated electrical equipment using wired telecommunication networks or data transmission busses
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Abstract
The invention discloses a power transmission channel control method, which comprises the following steps: collecting laser point cloud data, cruising image data and video data shot by video equipment arranged on a transmission tower of a transmission channel, and modeling a three-dimensional model of the transmission channel based on the laser point cloud data line, wherein the three-dimensional model comprises a meteorological model established based on meteorological data; and inputting operation and detection data into the three-dimensional model to perform data storage, fusion, calculation and analysis, wherein the three-dimensional model realizes active early warning of a power transmission video image based on cruising image data and video data, and the three-dimensional model dynamically analyzes and calculates sag, windage yaw and tower stress based on laser point cloud data and cruising image data.
Description
Technical Field
The invention belongs to the technical field of power transmission line management and control, and particularly relates to a power transmission channel control method.
Background
In recent years, with continuous production of national power grid direct current engineering, the situation of sharing channels between direct current power transmission lines and alternating current power transmission in a power grid becomes more and more common, so that dense arrangement of lines in the power grid power transmission channels is caused, and key power transmission channels with larger loads are concentrated in a smaller long and narrow area in each province. These critical channels are at risk of local disasters causing large grid accidents. How to ensure the safe and stable operation of the key transmission channel becomes the basis for guaranteeing the electricity demand of users in various areas and is also the important in the safety production of the national network company.
At present, related units of a national power grid have established management and control systems for fusing professional system data such as a PMS system, an OMS system, a video on-line monitoring system and the like. In the management and control system, line site videos shot by video equipment installed on a transmission tower and line inspection images obtained by helicopters, unmanned aerial vehicles, inspection robots and manual inspection are utilized, and data fusion and analysis are carried out by combining an image processing analysis technology, so that the system is one of important technical means for carrying out real-time monitoring and early warning on the environment of a transmission channel. However, because the intelligent application level of the management and control system is uneven, a large amount of video and image monitoring real-time data and information still need to be identified manually, and the working difficulty of human resources is greatly increased. Meanwhile, the number of the power transmission channels of the power grid in the recent years is increased year by year, and the number of corresponding management and control personnel is slowly increased, so that challenges are presented to the traditional management and control mode. How to use an intelligent control means to ensure the precision and speed of channel fault detection and effectively improve the channel environment prediction early warning precision, thereby ensuring the full safety of a key channel and becoming one of the difficulties to be solved in the key transmission line control process of a national power grid.
The alternating current and direct current loops in the environment of the key transmission channel are densely distributed and complex, so that dangerous sources in the channel are more difficult to identify and track than those of a common transmission channel; meanwhile, the key power transmission channel needs to be subjected to 'six-prevention' work including lightning protection, external damage prevention (mountain fire, construction damage, tree (bamboo) wire discharge prevention), pollution flashover prevention, bird damage prevention, ice coating prevention and wind deflection prevention in real time, if the key power transmission channel management and control work is placed in the unified management of the electric network management and control system, the key power transmission channel management and control efficiency is low, and timely early warning of faults cannot be realized in advance, so that an intelligent analysis management and control method based on the operation characteristics of the key power transmission channel is needed.
The above information disclosed in the background section is only for enhancement of understanding of the background of the invention and therefore may contain information that does not form the prior art that is already known in the country to a person of ordinary skill in the art.
Disclosure of Invention
The technical background of the patent is to provide an intelligent analysis management and control method specially suitable for key transmission channels based on a three-span management and control mechanism of across assets, across voltage classes and across departments. The method integrates an intelligent image processing technology, a channel defect detection technology and an accurate key channel meteorological model, and can maximally improve the management and control efficiency of the key power transmission channel.
The invention aims at realizing the following technical scheme, and the power transmission channel control method comprises the following steps:
in the first step, laser point cloud data, cruising image data and video data shot by video equipment arranged on a transmission tower of a transmission channel are collected,
in the second step, a three-dimensional model of the power transmission channel is modeled based on a laser point cloud data line, wherein the three-dimensional model comprises a meteorological model established based on meteorological data;
and in the third step, operation and detection data are input into the three-dimensional model to perform data storage, fusion, calculation and analysis, wherein the three-dimensional model realizes active early warning of a power transmission video image based on cruising image data and video data, and the three-dimensional model dynamically analyzes and calculates sag, windage yaw and tower stress based on laser point cloud data and cruising image data.
In the method, in the first step, the laser point cloud data is laser LiDAR point cloud data.
In the method, in the first step, cruise image data is acquired through three-dimensional cruise of a regular helicopter and/or an unmanned aerial vehicle.
In the method, in the second step, the three-dimensional model comprises a gradient analysis unit, a inundation analysis unit and a section diagram generation unit, and the three-dimensional model realizes station line query positioning, data space statistics, cross analysis and flight browsing based on 15m images, 30mDEM data and a vector element electronic map.
In the method, the meteorological model is verified through meteorological data integrated with an aviation platform on the ground.
In the method, a control part and a control system for controlling the power transmission channel are established, wherein the control system comprises a lightning protection center, an icing and mountain fire center and a numerical meteorological center, the lightning protection center, the icing and mountain fire center and the numerical meteorological center are respectively interacted with meteorological model data, and the control part receives data of the control system for big data analysis.
In the method, the control system further comprises a road mechanics center, an anti-short circuit capability calculation center and a galloping calculation center, real-time data are acquired by the control system to detect expressways, high-speed railways, sagging and galloping, the detection data are matched with laser point cloud data and are subjected to comparison analysis, and the accuracy is improved through repeated iteration, so that three-dimensional measurement and active early warning of the space of the power transmission channel are realized. .
In the method, the control part comprises a process control center for process control, a control information collection center for information collection, a command coordination center for command coordination and an early warning and judging center for early warning and judging.
In the method, in the second step, the three-dimensional model is formed through three-dimensional GIS modeling.
In the third step, the three-dimensional model receives data storage, fusion, calculation and analysis of operation detection data of a PMS2.0 system, an OMS system, a numerical weather forecast system, a state monitoring system, a thunder/mountain fire/icing early warning system and a video online monitoring system so as to perform fault analysis, state prediction and evaluation and risk early warning.
Compared with the prior art, the invention has the following advantages:
the invention relates to an intelligent, informationized and visual management and control optimization method for a key power transmission channel based on a three-span management and control mechanism. By optimizing the management and control mechanism, the key transmission channel management and control implements a three-span management and control mechanism of cross-asset, cross-voltage class and cross-department, and all management and control tasks from basic level workers to middle level managers to high-level decision makers are distributed uniformly, and responsibility is regulated to people. The key transmission channel is controlled by a cruising center, so that the three-dimensional cruising of a helicopter/unmanned aerial vehicle on a periodic basis of the key transmission channel is realized, the defects of a main body of the key transmission line and the defects of the channel are expected to be effectively found, and the three-dimensional reconstruction of the key transmission channel is realized by utilizing a laser LiDAR point cloud data line; the key power transmission channel is used for controlling a lightning protection center, an icing and forest fire center and a numerical value weather center, researching weather elements influencing the accuracy of an analysis model of the key power transmission line, establishing a weather model aiming at the key power transmission channel by utilizing a parameter modeling technology, and checking the weather model of the power transmission line through weather data integrated by the ground and an aviation platform; the key transmission channel is managed and controlled by a line mechanics center, an anti-short circuit capability calculation center and a galloping calculation center, real-time data are obtained, detection of highways, high-speed railways, sagging and galloping is achieved through a related algorithm, the detection data are matched with laser point cloud data and are subjected to comparison analysis, accuracy is improved through repeated iteration, and safety pre-warning under the key transmission channel space three-dimensional measurement and corresponding management and control standard is achieved.
The invention promotes the data fusion mode of the key transmission channel management and control system to be changed from a manual driving mode into a data driving mode, and the operation and inspection big data of professional system data such as a PMS2.0 system, an OMS system, a numerical weather forecast system, a state monitoring system, a thunder/mountain fire/icing early warning system, a video on-line monitoring system and the like are accessed into the key transmission channel operation and inspection intelligent analysis management and control system to synchronously store, fuse, calculate and analyze the data. And the data-driven fault analysis, state prediction and evaluation, risk early warning and other management and control advanced applications are realized. The data-driven management and control big data fusion mode can greatly improve the data processing efficiency and the operation and detection data capacity. And finally, the equipment state management and control force is improved, and the functions of comprehensive state analysis from information island to platform fusion, active prediction and early warning from post response to pre-prevention and accurate fault pre-judging from manual experience to intelligent analysis are realized. According to the invention, a command system of a key transmission channel management and control system is evolved from a scattered command mode to an intensive command mode, a 24-hour shift system is required to be established by a key transmission channel management and control center, and meanwhile, the system is managed to form a vertical management and control information collection center, a process management and control center, an early warning research and judgment center and a management and control system command coordination center, so that management and control contents are accurately divided, management and control command efficiency is improved, management and control big data are transmitted to the management and control center to carry out big data analysis work, and analysis results are transmitted to a state evaluation center, so that each layer of management and control manager obtains comprehensive information of operation and inspection work. Finally, the penetration force of operation and inspection management is improved, the upgrade of the control precision of one-key-to-end control and the upgrade of the control depth of one-line penetration control and the upgrade of the control force of integral combat control of high-efficiency command and decision are realized. The invention realizes intelligent big data analysis in the key transmission channel management and control system, and can realize mass data parallel calculation, data mining and effective data model establishment by depending on a big data platform. And finally, the key transmission channel management and control system is helped to realize comprehensive state analysis, active prediction early warning and accurate fault judgment, so that the equipment state management and control force is improved. Through the intelligent management and control command system, accurate and efficient process management and control, information collection, command coordination, early warning and judgment can be realized for the management and control of the key transmission channels, and finally the management and control system is helped to realize considerable and lean operation management and efficient command decision on the panoramic scene, so that the penetration force of operation and inspection management is improved. The intelligent command system and the data fusion mode can promote the construction of an intelligent analysis management and control system for the operation and the detection of the power grid, and finally realize the intelligent operation and detection system with the 'cloud object intelligent movement' modern information technology as a support, with the aim of guaranteeing the safe operation of power grid equipment and improving the efficiency benefit of the operation and detection, and with the functions of self and environment perception, active prediction and early warning, auxiliary diagnosis decision and intensive operation and detection management and control, the operation and detection service and management informatization, automation and intelligent technology, equipment and platform are realized.
Drawings
Various other advantages and benefits of the present invention will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. It is evident that the figures described below are only some embodiments of the invention, from which other figures can be obtained without inventive effort for a person skilled in the art. Also, like reference numerals are used to designate like parts throughout the figures.
In the drawings:
fig. 1 is a schematic diagram of steps of a power transmission path control method according to an embodiment of the present invention;
fig. 2 is a flow chart illustrating a method of implementing power transmission channel control according to an embodiment of the present invention;
FIG. 3 illustrates the data storage, fusion, calculation and analysis of motion detection data into the three-dimensional model;
FIG. 4 illustrates three-dimensional model reconstruction matching;
FIG. 5-1 illustrates a "three-span" section panoramic effect map of a power transmission channel;
FIG. 5-2 illustrates a torpedo grade analysis and cross-range calculation;
fig. 6 illustrates transmission line fusion, calculation and analysis for fault analysis, state prediction and evaluation, risk early warning.
The invention is further explained below with reference to the drawings and examples.
Detailed Description
Specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings. While specific embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
It should be noted that certain terms are used throughout the description and claims to refer to particular components. Those of skill in the art will understand that a person may refer to the same component by different names. The description and claims do not identify differences in terms of components, but rather differences in terms of the functionality of the components. As used throughout the specification and claims, the terms "include" and "comprise" are used in an open-ended fashion, and thus should be interpreted to mean "include, but not limited to. The description hereinafter sets forth a preferred embodiment for practicing the invention, but is not intended to limit the scope of the invention, as the description proceeds with reference to the general principles of the description. The scope of the invention is defined by the appended claims.
For the purpose of facilitating an understanding of the embodiments of the present invention, reference will now be made to the drawings, by way of example, and specific examples of which are illustrated in the accompanying drawings.
For better understanding, fig. 1 is a schematic diagram of steps of a power transmission path control method according to an embodiment of the present invention, as shown in fig. 1, a power transmission path control method includes the steps of:
in a first step S1, laser point cloud data, cruising image data and video data shot by video equipment installed on a transmission tower of a transmission channel are collected,
in a second step S2, modeling a three-dimensional model of the power transmission channel based on the laser point cloud data line, wherein the three-dimensional model comprises a meteorological model established based on meteorological data;
and in the third step S3, operation and detection data are input into the three-dimensional model to perform data storage, fusion, calculation and analysis, wherein the three-dimensional model realizes active early warning of a power transmission video image based on cruising image data and video data, and the three-dimensional model dynamically analyzes and calculates sag, windage yaw and tower stress based on laser point cloud data and cruising image data.
It should be noted that, the "fusion" refers to comparing the load capacity of the tower in the operation and detection data (that is, the allowable span concept commonly used in electric power design) with the information of the terrain, the altitude difference angle and the like (the actual span can be obtained) in the three-dimensional model, so as to obtain the "actual" design margin of the tower, thereby being different from the design margin in the prior art;
the analysis refers to analyzing the possibility of the occurrence risk of the tower after taking the use margin and the design safety factor into consideration on the basis of the actual design margin.
The active early warning is a method for making a risk early warning scheme and sending a risk warning to a special person according to different risk degrees, wherein the risk degrees are arranged in the model and can be divided into different thresholds according to requirements, such as general, serious and emergency degrees. The software system using the model can trigger an alarm according to the set threshold value.
In a preferred embodiment of the method, in the first step S1, the laser point cloud data is laser LiDAR point cloud data.
In a preferred embodiment of the method, a first step S1, cruise image data is acquired by means of a periodic helicopter and/or drone three-dimensional cruise.
In a preferred embodiment of the method, in a second step S2, the three-dimensional model includes a gradient analysis unit, a flooding analysis unit and a section diagram generation unit, and the three-dimensional model realizes stop line query positioning, data space statistics, cross analysis and flight browsing based on 15m images, 30m dem data and a vector element electronic map. It should be noted that, the "cross-over analysis" is based on solving the sag of the wire by using the catenary equation and the line state equation in the prior art, and the present disclosure additionally combines the heights of the wire, tree, railway or other lines under the wire, so as to obtain a clear distance (the clear distance is a term in the prior art for determining the discharge possibility of the line) to analyze the safety thereof.
In a preferred embodiment of the method, the meteorological model is verified by meteorological data integrated with the aircraft platform on the ground.
In a preferred embodiment of the method, a control part and a control system for controlling the power transmission channel are established, wherein the control system comprises a lightning protection center, an icing and mountain fire center and a numerical meteorological center, the lightning protection center, the icing and mountain fire center and the numerical meteorological center interact with meteorological model data respectively, and the control part receives data of the control system for big data analysis.
In the preferred implementation mode of the method, the control system further comprises a road mechanics center, an anti-short circuit capability calculation center and a galloping calculation center, the control system acquires real-time data to detect expressways, high-speed railways, sagging and galloping, the detection data are matched with laser point cloud data and are subjected to comparison analysis, and the accuracy is improved through repeated iteration, so that three-dimensional measurement and active early warning of the space of the power transmission channel are realized. It should be noted that "matching" refers to that the data obtained online is corresponding to the laser point cloud data, so that the real object depicted by the laser point cloud is a software object capable of specifying the features, and further analysis can be performed according to the software object, where the analysis content includes texture characteristics and the like.
In a preferred embodiment of the method, the control part comprises a process control center for process control, a control information collection center for information collection, a command coordination center for command coordination and an early warning and judgment center for early warning and judgment.
In a preferred embodiment of the method, in a second step S2, a three-dimensional model is formed by three-dimensional GIS modeling.
In a preferred embodiment of the method, in the third step S3, the three-dimensional model receives operation detection data of the PMS2.0 system, the OMS system, the numerical weather forecast system, the state monitoring system, the lightning/forest fire/icing early warning system and the video online monitoring system, and stores, fuses, calculates and analyzes the operation detection data to perform fault analysis, state prediction and evaluation, and risk early warning. It should be noted that, in the present disclosure, the fusion refers to that data from the above different systems is corresponding to the tower number, and related data is assigned to a corresponding section (the section is a continuous line with the same characteristics, belongs to the existing concept, but the present disclosure performs new assignment); the fault analysis refers to fault possibility, and mainly comprises calculation and comparison of actual numerical values such as partial lightning, icing, wind speed and the like, and mainly compares the design capacity of a line with the occurrence degree of disasters; the state prediction and evaluation are processes for evaluating risks brought by weather based on design values derived from PMS2.0, and according to the risk results, an alarm can be sent to a manager.
For a further understanding of the present invention, in one embodiment, referring to fig. 2, the control method of the present invention may include the steps of,
construction and development plan for clear key transmission channel management and control system
After the mechanism composition, the management and control system and the working mechanism of the key transmission channel part are defined, the key transmission channel management and control part and the corresponding management and control system are comprehensively established, and relevant standard standards are written.
Completion of three-dimensional GIS modeling of power transmission channel
And the system is independently responsible for completing parameterized modeling of the transmission line, laser point cloud and cruising data display, developing a special system interface and realizing the active early warning function of the transmission video image. The parameterized modeling of the power transmission line comprises three-dimensional GIS modeling and development of a three-dimensional GIS analysis tool. The key power transmission channels are required to be built into three-dimensional lines by all parameterized modeling.
Developing three-dimensional GIS tool
And the functions of station line inquiry positioning, data space statistics, cross analysis, flight browsing and the like are realized by finishing the 15m image, 30mDEM data and vector element electronic map warehouse entry display of the key transmission channel. According to the analysis requirement of the three-dimensional data of the operation and detection, the three-dimensional GIS analysis tool has the functions of gradient analysis, inundation analysis, section diagram generation and the like.
Realizing laser point cloud and navigation data display function
The key transmission line corridor channel, the cross point, the focused high-density and high-precision point laser point cloud data acquisition, critical and serious defect data of the navigation and inspection processing and related pictures are completed, and data support is provided for dynamic analysis and calculation of sag, wind deflection, tower stress and the like of operation and inspection personnel.
Developing specialized management and control system interfaces
The special data interface group is established, responsibility people are respectively implemented for each professional system, the data interface communication and development work are responsible, interface debugging and data access work are required to be completed for each related system, and the operation and detection big data of the key power transmission channel can be smoothly accessed into a specially-arranged management and control page.
Active early warning function for realizing power transmission video image
The video equipment installed on the existing transmission tower is utilized, the image processing analysis technology is combined, the active early warning function of the transmission video image is realized, the specially developed interface is utilized to enable the large data of the transmission video image to be put into the management and control system of the key transmission channel part, the deep fusion with other professional systems is realized, and the state management and control force of the equipment is improved.
The invention provides an optimization scheme aiming at a key transmission channel management and control system from the aspect of management and control mechanism optimization. The scheme integrates an intelligent image processing technology, a channel defect detection technology and an accurate key channel meteorological model, breaks through information island dilemma by means of 'cloud object intelligent movement' and other informatization technologies, supports the real-time sensing, online detection, scientific early warning, intelligent diagnosis and optimal integration of operation and detection resources of a key power transmission channel environment and equipment by means of equipment state panorama, data analysis automation and the like, provides comprehensive multidimensional data support for key power transmission channel management and control work, and achieves the management and control targets of improving equipment state management and control capacity and operation and detection management and penetration capacity. The invention can be applied to daily work of a transportation department, and can greatly improve the working efficiency, reduce human errors and improve the management level and economic benefit.
The following tables 1, 2 are used to understand the present invention:
table 1 helicopter inspection function
Table 2 three-dimensional operation functions and description
Although the embodiments of the present invention have been described above with reference to the accompanying drawings, the present invention is not limited to the above-described specific embodiments and application fields, and the above-described specific embodiments are merely illustrative, and not restrictive. Those skilled in the art, having the benefit of this disclosure, may effect numerous forms of the invention without departing from the scope of the invention as claimed.
Claims (7)
1. A power transmission channel control method, the method comprising the steps of:
in a first step (S1), laser point cloud data, cruising image data, and video data taken by video equipment installed on a transmission tower of a transmission channel are collected,
in a second step (S2), a three-dimensional model of the power transmission channel is modeled based on the laser point cloud data line, wherein the three-dimensional model comprises a meteorological model established based on meteorological data;
in the third step (S3), operation and detection data are input into the three-dimensional model to perform data storage, fusion, calculation and analysis, wherein the three-dimensional model realizes active early warning of a power transmission video image based on cruising image data and video data, and the three-dimensional model dynamically analyzes and calculates sag, windage yaw and tower stress based on laser point cloud data and cruising image data; the 'fusion' refers to comparing the load capacity of the tower in the operation and detection data with the terrain and the altitude difference angle of the three-dimensional model, so as to obtain an 'actual' design margin of the tower, and the actual design margin is different from the design margin of the prior art; the analysis refers to analyzing the possibility of the occurrence risk of the tower after using the margin and the design safety factor factors on the basis of the actual design margin; the method comprises the steps of setting a risk early warning scheme according to different risk degrees, and sending a risk warning to a special person, wherein the risk degrees are arranged in the three-dimensional model and divided into different thresholds according to requirements, and the three levels comprise general, serious and emergency; triggering an alarm according to a set threshold value;
wherein,
the second step (S2), wherein the three-dimensional model comprises a gradient analysis unit, a inundation analysis unit and a section diagram generation unit, and is used for realizing stop line inquiry positioning, data space statistics, cross analysis and flight browsing based on 15m images, 30m DEM data and a vector element electronic map; the cross-over analysis is to additionally combine the heights of wires, trees, railways or other circuits below the wires on the basis of solving the sag of the wires by using a catenary equation and a circuit state equation in the prior art, so as to obtain a clear distance and analyze the safety of the wires;
establishing a control part and a control system for controlling the power transmission channel, wherein the control system comprises a lightning protection center, an icing and mountain fire center and a numerical meteorological center, the lightning protection center, the icing and mountain fire center and the numerical meteorological center are respectively interacted with meteorological model data, and the control part receives data of the control system for big data analysis;
wherein,
establishing a meteorological model for a key power transmission channel by utilizing a parameter modeling technology, and checking the meteorological model of a power transmission line through meteorological data integrated by the ground and an aviation platform; the method comprises the steps that a key transmission channel is controlled to a mechanical center, a short circuit resistance computing center and a galloping computing center of a governed line, real-time data are obtained, detection of highways, high-speed railways, sagging and galloping is achieved through a related algorithm, the detection data are matched with laser point cloud data and are subjected to comparative analysis, accuracy is improved through repeated iteration, and safety pre-warning under the key transmission channel space three-dimensional measurement and corresponding control standards is achieved; the "matching" refers to that the data acquired online corresponds to the laser point cloud data, so that the real object depicted by the laser point cloud becomes a software object capable of specifying the characteristics, and further analysis can be performed according to the software object, and analysis contents comprise texture characteristics.
2. The method of claim 1, wherein the first step (S1) the laser point cloud data is laser LiDAR point cloud data.
3. The method according to claim 1, wherein the first step (S1) the cruise image data is acquired by means of a periodic helicopter and/or drone stereoscopic cruise.
4. The method of claim 1, wherein the meteorological model is verified by meteorological data integrated with an aerial platform over the ground.
5. The method of claim 1, wherein the management and control section includes a process management and control center for process management and control, a management and control information collection center for information collection, a command coordination center for command coordination, and an early warning judgment center for early warning judgment.
6. The method according to claim 1, wherein in the second step (S2), the three-dimensional model is formed by three-dimensional GIS modeling.
7. The method according to claim 1, wherein in the third step (S3), the three-dimensional model receives operation detection data storage, fusion, calculation and analysis of the PMS2.0 system, OMS system, numerical weather forecast system, state monitoring system, lightning/mountain fire/icing early warning system and video on-line monitoring system for fault analysis, state prediction and evaluation, risk early warning.
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