CN114154812A - Power transmission line wind speed monitoring method and device and storage medium - Google Patents
Power transmission line wind speed monitoring method and device and storage medium Download PDFInfo
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Abstract
The invention discloses a method and a device for monitoring the wind speed of a power transmission line and a storage medium, wherein the method comprises the following steps: acquiring a digital elevation model of the power transmission line to be monitored in a target area, and searching a plurality of meteorological stations closest to the power transmission line to be monitored according to the longitude and latitude in the digital elevation model; selecting one power transmission tower from the power transmission lines to be monitored as a reference power transmission tower, selecting one reference meteorological station from a plurality of meteorological stations, wherein the deviation angle between the wind direction monitored by the reference meteorological station and the wind direction monitored by the anemoscope is within a preset range; calculating theoretical wind speeds of all power transmission towers based on a digital elevation model; and calculating to obtain a wind speed correction coefficient according to the theoretical wind speed of the reference power transmission tower and the actual wind speed of the reference power transmission tower, and calculating to obtain the actual wind speeds of the other power transmission towers according to the wind speed correction coefficient and the theoretical wind speeds of the other power transmission towers. The embodiment of the invention not only can effectively improve the accuracy of wind speed monitoring of the power transmission line, but also can effectively reduce the cost.
Description
Technical Field
The invention relates to the technical field of power transmission line environment monitoring, in particular to a power transmission line wind speed monitoring method, a power transmission line wind speed monitoring device and a storage medium.
Background
In coastal areas, typhoon disasters are the main cause of damage to transmission line towers, huge loss is caused to a power grid, and normal power utilization of the society is influenced. When the typhoon comes, the actual wind speed of the tower is obtained, the operation and maintenance of the power grid can be effectively guided, corresponding measures are taken immediately, and the loss caused by the fact that the wind speed exceeds the tolerant wind speed of the tower is reduced. The existing transmission line wind speed monitoring method generally uses the wind speed and the wind direction measured by a meteorological station near a line as the wind speed and the wind direction of each tower in the line, but the logging path and the wind speed error of meteorological forecasting are large, so that the error of the transmission line wind speed monitoring is large.
Disclosure of Invention
The invention provides a method and a device for monitoring the wind speed of a power transmission line and a storage medium, which are used for solving the technical problem that the existing method for monitoring the wind speed of the power transmission line uses the wind speed and the wind direction measured by a meteorological station near the line as the wind speed and the wind direction of each tower in the line, so that the error of the wind speed monitoring of the power transmission line is large.
One embodiment of the invention provides a method for monitoring the wind speed of a power transmission line, which comprises the following steps:
acquiring a digital elevation model of a power transmission line to be monitored in a target area, and searching a plurality of meteorological stations closest to the power transmission line to be monitored according to the longitude and latitude in the digital elevation model;
selecting one power transmission tower from the power transmission line to be monitored as a reference power transmission tower, and selecting one reference meteorological station from a plurality of meteorological stations by comparing an anemoscope installed on the reference power transmission tower with wind directions monitored by all the meteorological stations, wherein the deviation angle between the wind direction monitored by the reference meteorological station and the wind direction monitored by the anemoscope is within a preset range;
calculating theoretical wind speeds of all power transmission towers based on the digital elevation model;
and calculating to obtain a wind speed correction coefficient according to the theoretical wind speed of the reference power transmission tower and the actual wind speed of the reference power transmission tower, and calculating to obtain the actual wind speeds of the other power transmission towers according to the wind speed correction coefficient and the theoretical wind speeds of the other power transmission towers.
Further, the calculating based on the digital elevation model to obtain the theoretical wind speeds of all the power transmission towers includes:
acquiring the average vegetation height and the maximum elevation of the power transmission line to be monitored in a target area according to the digital elevation model;
connecting the reference power transmission tower and the reference meteorological station, intercepting a section of the reference power transmission tower and the reference meteorological station in the vertical direction in the digital elevation model, and calculating to obtain horizontal distances and elevations between all the power transmission towers and the reference meteorological station based on the section;
and calculating theoretical wind speeds of all power transmission towers according to the average vegetation height, the maximum elevation, the horizontal distance, the elevation and the actual wind speed of the reference meteorological station.
Further, the selecting one transmission tower from the transmission lines to be monitored as a reference transmission tower includes:
and acquiring a midpoint of the power transmission line to be monitored, and selecting the power transmission tower closest to the midpoint as a reference power transmission tower.
Further, the calculating according to the theoretical wind speed of the reference power transmission tower and the actual wind speed of the reference power transmission tower to obtain a wind speed correction coefficient includes:
and taking the ratio of the actual wind speed of the reference power transmission tower to the theoretical wind speed of the reference power transmission tower as a wind speed correction system.
Further, the calculating the actual wind speeds of the other power transmission towers according to the wind speed correction coefficient and the theoretical wind speeds of the other power transmission towers includes:
and taking the product of the correction coefficient and the actual wind speed of the rest of the transmission towers as the actual wind speed of the rest of the transmission towers.
An embodiment of the present invention provides a transmission line wind speed monitoring device, including:
the meteorological station searching module is used for acquiring a digital elevation model of the power transmission line to be monitored in a target area and searching a plurality of meteorological stations closest to the power transmission line to be monitored according to the longitude and latitude in the digital elevation model;
the reference meteorological station selection module is used for selecting one power transmission tower from the power transmission line to be monitored as a reference power transmission tower, selecting one reference meteorological station from a plurality of meteorological stations by comparing an anemoscope installed on the reference power transmission tower with wind directions monitored by all the meteorological stations, wherein the deviation angle between the wind direction monitored by the reference meteorological station and the wind direction monitored by the anemoscope is within a preset range;
the theoretical wind speed calculation module is used for calculating theoretical wind speeds of all the power transmission towers based on the digital elevation model;
and the actual wind speed calculation module is used for calculating a wind speed correction coefficient according to the theoretical wind speed of the reference power transmission tower and the actual wind speed of the reference power transmission tower, and calculating actual wind speeds of the other power transmission towers according to the wind speed correction coefficient and the theoretical wind speeds of the other power transmission towers.
Further, the theoretical wind speed calculation module is specifically configured to:
acquiring the average vegetation height and the maximum elevation of the power transmission line to be monitored in a target area according to the digital elevation model;
connecting the reference power transmission tower and the reference meteorological station, intercepting a section of the reference power transmission tower and the reference meteorological station in the vertical direction in the digital elevation model, and calculating to obtain horizontal distances and elevations between all the power transmission towers and the reference meteorological station based on the section;
and calculating theoretical wind speeds of all power transmission towers according to the average vegetation height, the maximum elevation, the horizontal distance, the elevation and the actual wind speed of the reference meteorological station.
Further, the weather station searching module is configured to:
and acquiring a midpoint of the power transmission line to be monitored, and selecting the power transmission tower closest to the midpoint as a reference power transmission tower.
An embodiment of the invention provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of power line wind speed monitoring as described above.
According to the embodiment of the invention, the existing meteorological stations are fully utilized, and the actual wind speeds of all the power transmission towers can be calculated by only installing the anemoscope on one power transmission tower, so that the wind speed of the power transmission line is monitored, the wind speed and the wind direction measured by the meteorological stations are not required to be adopted as the wind speed and the wind direction of each tower in the line, the wind speed monitoring accuracy can be effectively improved, and the cost can be effectively reduced.
Drawings
Fig. 1 is a schematic flow chart of a method for monitoring wind speed of a power transmission line according to an embodiment of the present invention;
fig. 2 is a schematic diagram of a power transmission line provided in an embodiment of the present invention;
FIG. 3 is a schematic vertical sectional view of an area in which a reference weather station and a reference transmission tower are located according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a transmission line wind speed monitoring device provided by an embodiment of the invention.
Detailed Description
The technical solutions in the embodiments of the present application will be described below clearly and completely with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all embodiments. All other embodiments that can be derived by a person skilled in the art from the embodiments given herein without making any inventive effort fall within the scope of protection of the present application.
In the description of the present application, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless otherwise specified.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
Referring to fig. 1, an embodiment of the present invention provides a method for monitoring a wind speed of a power transmission line, including:
s1, acquiring a digital elevation model of the power transmission line to be monitored in the target area, and searching a plurality of weather stations closest to the power transmission line to be monitored according to the longitude and latitude in the digital elevation model;
it can be understood that the weather station includes a national weather station and an automatic weather station, the national weather station generally refers to a national basic weather station, the national basic weather station is a main station of a national weather and climate station network, a II type comprehensive wired remote measuring device is configured, people are required to watch duty around the clock, the obtained data is kept continuous for a long time, and a monthly (yearly) report is compiled. The requirement of the station is constant for a long time, the distance between the two stations is about 150km generally, and the two stations also undertake weather report, important weather report and dangerous flight report tasks. The ground meteorological observation is one of the basic tasks of each ground meteorological observation station, the basic task of the ground meteorological observation is observation, recording processing and compiling meteorological reports, the ground meteorological observation station is divided into a national reference weather station, a national reference weather station and a national general weather station according to the assumed observation task and effect, the national reference weather station carries out timing observation for 24 times every day, and the day and night are in duty; the national basic weather station carries out 4 timed observations at 02, 08, 14 and 20 hours and 4 supplementary observations at 05, 11, 17 and 23 hours every day, and keeps on duty day and night; the general weather station of the country is set according to the administrative division of province (district, city). The automatic weather station is a weather station which is constructed in a certain area according to needs, can automatically detect a plurality of elements, can automatically generate messages without manual intervention, and can transmit detection data to the central station at regular time, and is an important means for making up for the blank of the weather detection data in a space area. The system consists of a meteorological sensor, a microcomputer meteorological data acquisition instrument, a power supply system, a radiation-proof ventilation hood, an all-weather protection box, a meteorological observation support, a communication module and the like. The system can be used for all-weather on-site monitoring of dozens of meteorological elements such as wind speed, wind direction, rainfall, air temperature, air humidity, illumination intensity, soil temperature, soil humidity, evaporation capacity and atmospheric pressure. The system can be connected with a computer through a professional matched data acquisition communication line, and transmits data to a meteorological database of a meteorological computer for statistical analysis and processing.
In the embodiment of the invention, Digital Elevation Model data of the area where the power transmission line to be monitored is located can be obtained according to geographic information data disclosed or actually measured by a network, a Digital Elevation Model (DEM) is the most basic part in a DTM and is a discrete mathematical expression of the topography of the earth surface, and the embodiment of the invention can obtain the longitude and latitude and the corresponding Elevation of the power transmission line to be monitored, the average vegetation height data h of the area where the power transmission line to be monitored is located and the maximum Elevation h according to the Digital Elevation Modelmax。
In the embodiment of the invention, a plurality of weather stations closest to the power transmission line to be monitored are searched according to the longitude and latitude in the digital elevation model, that is, the weather stations nearby are searched according to the shortest distance first by taking the longitude and latitude of the power transmission line to be monitored as a reference, for example, a preset number of weather stations are searched according to the shortest distance searching principle, for example, the weather stations in a preset distance range are searched according to the shortest distance searching principle.
S2, selecting one power transmission tower from the power transmission lines to be monitored as a reference power transmission tower, and selecting one reference meteorological station from the plurality of meteorological stations by comparing the anemoscope installed on the reference power transmission tower with the wind directions monitored by all the meteorological stations, wherein the deviation angle between the wind direction monitored by the reference meteorological station and the wind direction monitored by the anemoscope is within a preset range;
in the embodiment of the invention, one transmission tower in the transmission line to be monitored is selected as a reference transmission tower, and an installation point for installing the anemometer is arranged on the reference transmission tower, wherein the reference transmission tower can arbitrarily select one of all transmission towers in the transmission line to be monitored.
Optionally, in the embodiment of the present invention, a transmission tower in the middle section of the transmission line to be monitored is selected as a reference transmission tower, for example, in the transmission line with the length of 100KM, after the direction of the transmission line is determined, one transmission tower is selected as the reference transmission tower at the middle section of 30KM to 70 KM; for example, in a transmission line with a length of 100KM, a nearest transmission tower is selected as a reference transmission tower at a position where the transmission line has a length of 50KM, and the reference transmission tower is selected at two ends of the transmission line, so that the error at the other end gradually increases, and the accuracy and reliability of monitoring can be effectively improved.
Referring to fig. 2, the anemoscope and each meteorological station in the embodiment of the present invention perform wind direction data and wind speed data according to preset frequency monitoring, when extreme strong wind such as typhoon occurs, the wind direction monitored by the anemoscope installed on the reference power transmission tower is compared with the wind directions monitored by the other meteorological stations, and a meteorological station having a wind direction within a preset range of an angular deviation between the wind direction and the wind direction monitored by the anemoscope is selected as a reference meteorological station. The angular deviation of the preset range can be set according to actual needs, for example, the angular deviation of the preset range is | θ |n-αm|<If the absolute value of the phase difference is within 5 °, the wind direction is considered to be consistent. When the number of surrounding weather stations is small, the error range can be expanded to 15 degrees thetanWind direction, alpha, obtained for reference weather station monitoringmThe resulting wind direction is monitored for a reference transmission tower.
S3, calculating theoretical wind speeds of all power transmission towers based on the digital elevation model;
in the embodiment of the invention, a reference power transmission station and a reference meteorological station are connected, a section in the vertical direction is intercepted in a digital elevation model, the horizontal distance and the elevation of all power transmission towers and the reference meteorological station can be obtained according to the section, and the horizontal distance, the elevation, the average vegetation height data h and the maximum elevation h are obtained according to the horizontal distance, the elevation, the average vegetation height data h and the maximum elevation hmaxAnd calculating the wind speed measured by the power transmission tower to obtain the theoretical wind speeds of all the power transmission towers.
And S4, calculating according to the theoretical wind speed of the reference power transmission tower and the actual wind speed of the reference power transmission tower to obtain a wind speed correction coefficient, and calculating according to the wind speed correction coefficient and the theoretical wind speeds of the other power transmission towers to obtain the actual wind speeds of the other power transmission towers.
In the embodiment of the invention, the theoretical wind speed is corrected by adopting the wind speed correction coefficient, so that the actual wind speeds of the other power transmission towers can be accurately obtained.
According to the embodiment of the invention, the existing meteorological stations are fully utilized, and the actual wind speeds of all the power transmission towers can be calculated by only installing the anemoscope on one power transmission tower, so that the wind speed of the power transmission line is monitored, the wind speed and the wind direction measured by the meteorological stations are not required to be adopted as the wind speed and the wind direction of each tower in the line, the wind speed monitoring accuracy can be effectively improved, and the cost can be effectively reduced.
In one embodiment, the theoretical wind speeds for all transmission towers are calculated based on a digital elevation model, including:
acquiring the average vegetation height h and the maximum elevation h of the power transmission line to be monitored in the target area according to the digital elevation modelmax；
Connecting a reference power transmission tower and a reference meteorological station, intercepting a section of the digital elevation model in the vertical direction where the reference power transmission tower and the reference meteorological station are located, and calculating to obtain horizontal distances and elevations between all the power transmission towers and the reference meteorological station based on the section;
referring to FIG. 3, in one embodiment, the reference transmission tower m is horizontally spaced from the reference weather station n by a distance LmElevation of HmAnd the horizontal distance between the other transmission towers i in the line and the reference meteorological station is LiHeight range is Hi。
And calculating to obtain the theoretical wind speeds of all the power transmission towers according to the average vegetation height, the maximum elevation, the horizontal distance, the elevation and the actual wind speed of the reference meteorological station.
In the embodiment of the invention, the theoretical wind speed of the reference transmission tower m is calculated according to the formula (1):
wherein v ismTheoretical wind speed, v, of a reference transmission tower mnWind direction, H, monitored by an anemometermAs reference power transmission tower m and baseElevation of horizontal distance, L, of quasi-meteorological station nmIs the horizontal distance between a reference power transmission tower m and a reference meteorological station n, h is the average vegetation height of the power transmission line to be monitored in a target area, hmaxThe maximum elevation of the average vegetation height of the transmission line to be monitored in the target area is obtained.
Based on the same technical concept, the theoretical wind speed V of the rest transmission towers i can be calculated according to the formula (1)i。
In one embodiment, selecting one transmission tower in the transmission line to be monitored as a reference transmission tower comprises:
and acquiring the midpoint of the power transmission line to be monitored, and selecting the power transmission tower closest to the midpoint as a reference power transmission tower.
In this embodiment, the midpoint may be a length midpoint of the power transmission line to be monitored, or a midpoint of a connection line between a start point and an end point of the power transmission line to be monitored.
In one embodiment, the wind speed correction factor is calculated from the theoretical wind speed of the reference transmission tower and the actual wind speed of the reference transmission tower, and comprises:
and taking the ratio of the actual wind speed of the reference power transmission tower to the theoretical wind speed of the reference power transmission tower as a wind speed correction system.
Specifically, the calculation formula of the wind speed correction coefficient is as follows:
μ＝um/vm (2)
wherein mu is a wind speed correction coefficient, umIs the actual wind speed, v, of the reference transmission towermThe theoretical wind speed of the reference power transmission tower.
In one embodiment, the calculating of the actual wind speed of the remaining transmission towers from the wind speed correction factor and the theoretical wind speeds of the remaining transmission towers comprises:
and taking the product of the correction coefficient and the actual wind speed of the rest of the transmission towers as the actual wind speed of the rest of the transmission towers.
After the wind speed correction coefficient mu is obtained, the actual wind speeds of all the transmission towers i are calculated according to the formula (3) by combining the theoretical wind speeds of the transmission towers i:
Vi＝Vi·μ (3)
wherein, ViIs the actual wind speed of the ith power transmission tower, V'iThe theoretical wind speed of the ith transmission tower.
The embodiment of the invention has the following beneficial effects:
according to the embodiment of the invention, the existing meteorological stations are fully utilized, and the actual wind speeds of all the power transmission towers can be calculated by only installing the anemoscope on one power transmission tower, so that the wind speed of the power transmission line is monitored, the wind speed and the wind direction measured by the meteorological stations are not required to be adopted as the wind speed and the wind direction of each tower in the line, the wind speed monitoring accuracy can be effectively improved, and the cost can be effectively reduced.
Furthermore, the theoretical wind speed of the reference power transmission tower is calculated based on the digital elevation model, the wind speed correction coefficient is calculated according to the actual wind speed of the power transmission tower provided with the anemoscope, the theoretical wind speeds of other power transmission towers are corrected by the wind speed correction coefficient to obtain the actual wind speed, and the wind speed correction coefficient is suitable for actual complex terrain, so that the wind speed monitoring of the power transmission tower of the power transmission line is more reliable and accurate.
Referring to fig. 4, based on the same inventive concept as above, an embodiment of the present invention provides a wind speed monitoring device for a power transmission line, including:
the meteorological station searching module 10 is used for acquiring a digital elevation model of the power transmission line to be monitored in a target area, and searching a plurality of meteorological stations closest to the power transmission line to be monitored according to the longitude and latitude in the digital elevation model;
the reference meteorological station selecting module 20 is configured to select one power transmission tower from the power transmission line to be monitored as a reference power transmission tower, select one reference meteorological station from the plurality of meteorological stations by comparing the anemoscope installed on the reference power transmission tower with the wind directions monitored by all the meteorological stations, and enable the deviation angle between the wind direction monitored by the reference meteorological station and the wind direction monitored by the anemoscope to be within a preset range;
the theoretical wind speed calculation module 30 is used for calculating theoretical wind speeds of all the power transmission towers based on the digital elevation model;
and the actual wind speed calculation module 40 is configured to calculate a wind speed correction coefficient according to the theoretical wind speed of the reference power transmission tower and the actual wind speed of the reference power transmission tower, and calculate actual wind speeds of the other power transmission towers according to the wind speed correction coefficient and the theoretical wind speeds of the other power transmission towers.
In one embodiment, the theoretical wind speed calculation module 30 is specifically configured to:
acquiring the average vegetation height and the maximum elevation of the power transmission line to be monitored in a target area according to the digital elevation model;
connecting a reference power transmission tower and a reference meteorological station, intercepting a section of the digital elevation model in the vertical direction where the reference power transmission tower and the reference meteorological station are located, and calculating to obtain horizontal distances and elevations between all the power transmission towers and the reference meteorological station based on the section;
and calculating to obtain the theoretical wind speeds of all the power transmission towers according to the average vegetation height, the maximum elevation, the horizontal distance, the elevation and the actual wind speed of the reference meteorological station.
In one embodiment, the weather station locating module 10 is configured to:
and acquiring the midpoint of the power transmission line to be monitored, and selecting the power transmission tower closest to the midpoint as a reference power transmission tower.
In one implementation, the actual wind speed calculation module 40 is configured to:
and taking the ratio of the actual wind speed of the reference power transmission tower to the theoretical wind speed of the reference power transmission tower as a wind speed correction system.
In one embodiment, the actual wind speed calculation module 40 is further configured to:
and taking the product of the correction coefficient and the actual wind speed of the rest of the transmission towers as the actual wind speed of the rest of the transmission towers.
An embodiment of the invention provides a computer-readable storage medium, on which a computer program is stored, which, when executed by a processor, implements the steps of transmission line wind speed monitoring as described above.
The foregoing is a preferred embodiment of the present invention, and it should be noted that it would be apparent to those skilled in the art that various modifications and enhancements can be made without departing from the principles of the invention, and such modifications and enhancements are also considered to be within the scope of the invention.
Claims (9)
1. A method for monitoring the wind speed of a power transmission line is characterized by comprising the following steps:
acquiring a digital elevation model of a power transmission line to be monitored in a target area, and searching a plurality of meteorological stations closest to the power transmission line to be monitored according to the longitude and latitude in the digital elevation model;
selecting one power transmission tower from the power transmission line to be monitored as a reference power transmission tower, and selecting one reference meteorological station from a plurality of meteorological stations by comparing an anemoscope installed on the reference power transmission tower with wind directions monitored by all the meteorological stations, wherein the deviation angle between the wind direction monitored by the reference meteorological station and the wind direction monitored by the anemoscope is within a preset range;
calculating theoretical wind speeds of all power transmission towers based on the digital elevation model;
and calculating to obtain a wind speed correction coefficient according to the theoretical wind speed of the reference power transmission tower and the actual wind speed of the reference power transmission tower, and calculating to obtain the actual wind speeds of the other power transmission towers according to the wind speed correction coefficient and the theoretical wind speeds of the other power transmission towers.
2. The method for monitoring the wind speed of the power transmission line according to claim 1, wherein the calculating the theoretical wind speeds of all the power transmission towers based on the digital elevation model comprises:
acquiring the average vegetation height and the maximum elevation of the power transmission line to be monitored in a target area according to the digital elevation model;
connecting the reference power transmission tower and the reference meteorological station, intercepting a section of the digital elevation model in the vertical direction where the reference power transmission tower and the reference meteorological station are located, and calculating to obtain horizontal distances and elevations between all the power transmission towers and the reference meteorological station based on the section;
and calculating theoretical wind speeds of all power transmission towers according to the average vegetation height, the maximum elevation, the horizontal distance, the elevation and the actual wind speed of the reference meteorological station.
3. The transmission line wind speed monitoring method according to claim 1, wherein said selecting one transmission tower in said transmission line to be monitored as a reference transmission tower comprises:
and acquiring a midpoint of the power transmission line to be monitored, and selecting the power transmission tower closest to the midpoint as a reference power transmission tower.
4. The method for monitoring the wind speed of the power transmission line according to claim 1, wherein the calculating the wind speed correction factor according to the theoretical wind speed of the reference power transmission tower and the actual wind speed of the reference power transmission tower comprises:
and taking the ratio of the actual wind speed of the reference power transmission tower to the theoretical wind speed of the reference power transmission tower as a wind speed correction system.
5. The method for monitoring the wind speed of the power transmission line according to claim 1, wherein the step of calculating the actual wind speeds of the remaining power transmission towers according to the wind speed correction coefficient and the theoretical wind speeds of the remaining power transmission towers comprises the following steps:
and taking the product of the correction coefficient and the actual wind speed of the rest of the power transmission towers as the actual wind speed of the rest of the power transmission towers.
6. The utility model provides a transmission line wind speed monitoring devices which characterized in that includes:
the meteorological station searching module is used for acquiring a digital elevation model of the power transmission line to be monitored in a target area and searching a plurality of meteorological stations closest to the power transmission line to be monitored according to the longitude and latitude in the digital elevation model;
the reference meteorological station selection module is used for selecting one power transmission tower from the power transmission line to be monitored as a reference power transmission tower, selecting one reference meteorological station from a plurality of meteorological stations by comparing an anemoscope installed on the reference power transmission tower with wind directions monitored by all the meteorological stations, wherein the deviation angle between the wind direction monitored by the reference meteorological station and the wind direction monitored by the anemoscope is within a preset range;
the theoretical wind speed calculation module is used for calculating theoretical wind speeds of all the power transmission towers based on the digital elevation model;
and the actual wind speed calculation module is used for calculating a wind speed correction coefficient according to the theoretical wind speed of the reference power transmission tower and the actual wind speed of the reference power transmission tower, and calculating actual wind speeds of the other power transmission towers according to the wind speed correction coefficient and the theoretical wind speeds of the other power transmission towers.
7. The transmission line wind speed monitoring device of claim 6, wherein the theoretical wind speed calculation module is specifically configured to:
acquiring the average vegetation height and the maximum elevation of the power transmission line to be monitored in a target area according to the digital elevation model;
connecting the reference power transmission tower and the reference meteorological station, intercepting a section of the digital elevation model in the vertical direction where the reference power transmission tower and the reference meteorological station are located, and calculating to obtain horizontal distances and elevations between all the power transmission towers and the reference meteorological station based on the section;
and calculating theoretical wind speeds of all power transmission towers according to the average vegetation height, the maximum elevation, the horizontal distance, the elevation and the actual wind speed of the reference meteorological station.
8. The transmission line wind speed monitoring device of claim 6, wherein the weather station lookup module is configured to:
and acquiring a midpoint of the power transmission line to be monitored, and selecting the power transmission tower closest to the midpoint as a reference power transmission tower.
9. A computer-readable storage medium, characterized in that the computer-readable storage medium has stored thereon a computer program which, when being executed by a processor, carries out the steps of transmission line wind speed monitoring according to any one of claims 1 to 5.
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