CN107036654B - Overhead transmission conductor windage yaw characteristic monitoring system, testing method and device - Google Patents

Abstract

The invention relates to an overhead power transmission conductor windage yaw characteristic monitoring system, a testing method and a device, wherein the overhead power transmission conductor windage yaw characteristic monitoring system comprises a microclimate testing device, a wireless receiving device and a server; the system also comprises a plurality of groups of test loops erected among the towers; the test loop comprises two wires to be tested connected with the large current generator and a windage yaw monitoring device respectively arranged in the center of the span of each wire to be tested; when the heavy current generator loads current to the wire to be tested, the microclimate testing device collects meteorological environment data in real time and transmits the meteorological environment data to the server through the wireless receiving device; the windage yaw monitoring device collects windage yaw data of the wire to be tested in real time and transmits the windage yaw data to the server through the wireless receiving device; and the server classifies the meteorological environment data and the windage yaw data to obtain windage yaw characteristic data of the wire to be tested. The invention can accurately reflect the relation between the wind deflection angle and the deflection angle of the wire and the wind speed.

Description

Monitoring system, testing method and device for windage characteristics of overhead transmission conductors

technical field

The invention relates to the technical field of high-voltage electric equipment, in particular to a monitoring system, testing method and device for the windage characteristic of an overhead power transmission conductor.

Background technique

Under the background of my country's all-round acceleration of economy and society, the corresponding power system requirements are gradually increasing. In order to upgrade and improve the existing power system structure and facilities to meet the requirements of long-distance high-voltage transmission technology, overhead The conductor structure of the transmission line is being continuously upgraded and improved, which also increases the possibility of galloping in the transmission line. The wind deflection of transmission lines is very threatening and complicated to the safe operation of the line. Wind deflection is a phenomenon of wire swing caused by wind. The formation of wind deflection generally depends on two factors, namely wind excitation and line structure. with parameters. Due to the high degree of wind deflection, it may cause phase-to-phase flashover and damage to metal fixtures, or cause serious accidents such as line tripping and power failure, pulling down pole towers, and wire breakage, resulting in major economic losses.

In the design of overhead transmission lines, the consideration of wind pressure characteristics of transmission lines occupies a very important part. In the scope of the global power system, how to determine the wind resistance and wind angle of the wires for the design standards and specifications of transmission lines The size is an important criterion that affects whether the entire transmission line can operate safely. Many provinces in the southeast of my country are located in coastal areas, and these areas are affected by strong coastal winds, which seriously threatens the safe operation of the line. Low wind pressure conductors can effectively reduce the horizontal load and wind deflection range of overhead conductors, thereby improving the power supply reliability of power transmission. However, my country's low wind pressure conductor project only started in recent years, and is still in the research and development stage, with no application performance. It is urgent to systematically evaluate the aerodynamic performance of low wind pressure conductors and grasp their applicable wind speed range. Therefore, it is of great significance to study the wind pressure characteristics of overhead transmission lines in different environments to study the galloping of overhead lines and prevent the harm it brings.

In the process of realization, the inventors found that there are at least the following problems in the traditional technology: At present, the research on the aerodynamic characteristics of wind pressure mostly uses wind tunnel for experimental measurement. However, using wind tunnel measurement as an experimental method has long cycle and high cost , the means are limited, there are problems such as errors, and there are also high limitations in the design and construction of the experimental device. In recent years, some transmission line wind deflection monitoring devices have appeared at home and abroad, which can be roughly divided into two categories. One is to establish a wind deflection model. However, since there are many factors affecting the wind deflection angle of insulator strings and some factors are difficult to determine, the The accuracy of the windage angle calculated by this method is low; another method is to install an angle sensor on the insulator string to collect windage data, but this wired data collection method has defects such as poor mobility and inconvenient cable assistance. When there are many collection points, too many sensors and auxiliary equipment installed on the insulator string will cause excessive load on the insulator, which will cause a great safety hazard to the tower.

Contents of the invention

Based on this, it is necessary to provide a wind deflection characteristic monitoring system, testing method and device for overhead transmission conductors in view of the problems of low accuracy and high potential safety hazards of traditional wind deflection monitoring technology.

In order to achieve the above object, on the one hand, an embodiment of the present invention provides a windage characteristic monitoring system for overhead power transmission conductors, including a micro-meteorological testing device, a wireless receiving device, and a server; it also includes several sets of testing loops erected between poles and towers; The test circuit includes two wires to be tested connected to the large current generator and a windage monitoring device respectively arranged in the center of the span of each wire to be tested;

When the large current generator loads current to the wire to be tested, the micro-meteorological test device collects the meteorological environment data in real time, and transmits the meteorological environment data to the server through the wireless receiving device; the wind deviation monitoring device collects the wind deviation data of the wire to be tested in real time, And transmit the wind deviation data to the server through the wireless receiving device;

The server classifies and processes the meteorological environment data and the wind deviation data to obtain the wind deviation characteristic data of the wire to be tested; the wind deviation characteristic data includes a wind speed and wind deviation characteristic curve and a wind speed deviation angle characteristic curve.

On the one hand, the embodiment of the present invention also provides a method for testing the windage characteristics of overhead power transmission conductors, including the following steps:

When the large current generator loads current to each wire to be tested in the test circuit, the micro-meteorological test device obtains real-time meteorological environment data, and the wind deviation monitoring device obtains the wind deviation data of each wire to be tested; the meteorological environment data includes temperature data, humidity data, wind speed data and wind direction data; wind deviation data includes wind deviation angle and deflection angle;

The server classifies and processes the meteorological environment data and the wind deviation data to obtain the wind deviation characteristic data of the wire to be tested; the wind deviation characteristic data includes a wind speed and wind deviation characteristic curve and a wind speed deviation angle characteristic curve.

On the other hand, an embodiment of the present invention provides a device for testing the windage characteristic of an overhead power transmission conductor, including:

The meteorological data acquisition unit is used to obtain real-time meteorological environment data when the large current generator loads current to each wire to be tested in the test circuit; the meteorological environment data includes temperature data, humidity data, wind speed data and wind direction data;

The wind deflection data acquisition unit is used to obtain the wind deflection data of each wire to be tested in the test loop when the large current generator loads current to each wire to be tested in the test loop; the wind deflection data includes wind deflection angle and deflection angle;

The data processing unit is used to classify and process the meteorological environment data and the wind deviation data to obtain the wind deviation characteristic data of the wire to be tested; the wind deviation characteristic data includes a wind speed and wind deviation characteristic curve and a wind speed deviation angle characteristic curve.

The present invention has following advantage and beneficial effect:

The windage characteristic monitoring system, testing method and device of the overhead power transmission conductor of the present invention use the large-gage tower rod test platform to simulate the actual line section to carry out the measurement and research of each conductor to be tested, that is, to study the windage characteristic of the conductor under the actual strong wind condition . A micro-meteorological testing device is installed on the tower of the line section to be tested to collect the local meteorological conditions in real time, and a set of wind deviation monitoring device is installed in the center of the span of the conductor to monitor the wind deviation of the conductor in real time. For different wires to be tested, the data collected by the measuring device will transmit the relevant test data to the wireless receiving device through WiFi, and the wireless receiving device will upload the collected data to the server, and the server will process the data according to the program set by the system. The data can accurately reflect the relationship between the wind deflection angle of the conductor and the wind speed and the relationship between the deflection angle and the wind speed. The invention is applicable to the research of windage characteristics of various overhead lines.

Description of drawings

Fig. 1 is a structural schematic diagram of Embodiment 1 of the monitoring system for windage characteristics of overhead transmission conductors of the present invention;

Fig. 2 is a structural schematic diagram of Embodiment 2 of the monitoring system for windage characteristics of overhead transmission conductors of the present invention;

Fig. 3 is a schematic flow chart of Embodiment 1 of the method for testing the windage characteristics of overhead power transmission conductors according to the present invention;

Fig. 4 is a schematic structural view of Embodiment 1 of the testing device for windage characteristics of overhead transmission conductors according to the present invention.

Detailed ways

In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. A preferred embodiment of the invention is shown in the drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the present invention will be thorough and complete.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Description of the specific application scenario of the windage characteristic monitoring system, testing method and device of the overhead power transmission conductor of the present invention:

The traditional monitoring method of establishing a wind angle model generally uses sensors to collect parameters such as the inclination angle of the insulator string, wind speed, and wind direction, and brings the collected data into the model to calculate the wind angle of the insulator string. There are many angle factors and some factors are difficult to determine, so the accuracy of windage angle calculated by this method is low; while for the traditional method of installing angle sensors on insulator strings to collect windage data, this wired data acquisition method There are defects such as poor mobility and inconvenient cable assistance. When there are many collection points, too many sensors and auxiliary equipment installed on the insulator string will cause excessive load on the insulator, which will cause great safety hazards to the tower.

It can be made clear that the traditional monitoring method is to study the windage angle and deflection angle of the wire by measuring the insulator string on the actual line section, but the present invention directly studies the windage characteristic of the wire through field tests (that is, there is no simulation process ), specifically, the present invention carries out the windage characteristic test of the wire by building a real-type tower experiment platform with a large span of 200m, and can simultaneously erect a plurality of different wires to carry out comparative tests; therefore the present invention can solve the problem of windage angle accuracy Low problem (no model and simulation process required); at the same time, the data transmission in the present invention can be carried out in a wireless manner, so it can overcome the problems of poor mobility and inconvenient cable assistance in the traditional technology, and ensure the safety of the tower.

The technical solution of the present invention can be applied to all types of overhead power transmission conductors; preferably, it can be used for low wind pressure conductors, and is also suitable for monitoring the windage characteristics of ordinary round strands. At this time, through the technical solution of the present invention, It can highlight that the low wind pressure wire has a lower drag coefficient at a high wind speed, thereby having the advantage of a lower windage angle.

Embodiment 1 of the monitoring system for windage characteristics of overhead power transmission conductors according to the present invention:

In order to solve the problems of low accuracy and high potential safety hazards of the traditional wind deviation monitoring technology, the present invention provides an embodiment 1 of a wind deviation characteristic monitoring system for overhead power transmission conductors, and Figure 1 is an embodiment of the wind deviation characteristic monitoring system for overhead power transmission conductors of the present invention 1; as shown in Figure 1, it can include micro-meteorological testing device 110, wireless receiving device 120 and server 130; it also includes several groups of test loops erected between towers; the test loop includes two a wire to be tested and a windage monitoring device 140 respectively arranged at the center of each wire to be tested;

When the large current generator loads current to the wire to be tested in the test loop, the micro-meteorological testing device 110 collects meteorological environment data in real time, and transmits the meteorological environment data to the server 130 through the wireless receiving device 120; the wind deviation monitoring device 140 collects in real time windage data of the wire to be measured, and transmit the windage data to the server 130 through the wireless receiving device 120;

The server 130 classifies and processes the meteorological environment data and the wind deviation data to obtain the wind deviation characteristic data of the wire to be tested; the wind deviation characteristic data includes a wind speed and wind deviation characteristic curve and a wind speed deviation angle characteristic curve.

Specifically, the monitoring system for windage characteristics of overhead transmission conductors of the present invention uses a large-gage tower pole test platform to simulate the actual line section to conduct measurement research on each conductor to be tested, that is, to study the windage characteristics of the conductors under actual strong wind conditions.

Among them, a micro-meteorological testing device is installed on the pole tower of the line section to be tested to collect local weather conditions in real time, and a set of wind deviation monitoring device is installed in the center of the span of the wire to be tested to monitor the wind deviation of the wire in real time. A number of different wires to be tested can be set up, and the data collected by the measuring device will be transmitted to the wireless receiving device through WiFi. The wireless receiving device will upload the collected data to the server, and the server will process the data according to the program set by the system. Processing, the processed data can accurately reflect the relationship between the wind deflection angle and wind speed of the wire and the relationship between the deflection angle and wind speed. The invention is applicable to the research of windage characteristics of various overhead lines.

The present invention is applicable to the wind deflection monitoring of overhead transmission wires, and can be aimed at the wind deflection monitoring system for real-time monitoring of line galloping for wind deflection, galloping, and sag flashover accidents of the transmission line, which will collect the wind deflection monitoring system The data such as wind deflection of the conductor and its change status are transmitted to the central monitoring and analysis system (ie server) in real time through the WiFi network for analysis. The present invention uses simulated actual line sections to measure and study the windage characteristics of low wind pressure conductors or ordinary round strands, and can realize the comparison of windage characteristics of up to six kinds of conductors at the same time, that is, to study and compare the windage characteristics of various conductors under actual strong wind conditions. windage characteristics.

Preferably, the mass of the wind deflection testing device in each embodiment of the present invention is about 2.8kg, and the diameter is about 190mm, and the installation on the wire will not affect the normal operation of the line.

Fig. 2 is the structural schematic diagram of Embodiment 2 of the monitoring system for windage characteristics of overhead power transmission conductors of the present invention; as shown in Fig. 2, in a specific embodiment, the number of test loops is 3 groups; a wire to be tested and a second wire to be tested;

The first end of the first wire to be tested is connected to the first end of the second wire to be tested by a drain wire; the second end of .

As shown in Figure 2, Embodiment 2 of the windage characteristic monitoring system for overhead power transmission conductors may include conductors 1, 2, 3, 4, 5, 6 to be tested arranged in sequence from left to right, windage monitoring devices 101, 201, 301, 401, 501, 601, micro-meteorological test device 7, copper bar 8 for connecting the wire to be tested and the high-current generator, high-current generator 9, cables 10 for connecting the high-current generator and power supply, and power supply 11 .

Preferably, the windage monitoring devices 101, 201, 301, 401, 501, 601 are installed in the center of the span of the wire to be tested, and the micro-meteorological testing device 7 is installed on the tower.

It can be clarified that, through the embodiment 2 of the monitoring system for windage characteristics of overhead power transmission conductors of the present invention, online monitoring of windage characteristics of six conductors can be performed simultaneously. Specifically, 6 kinds of wires to be tested can be erected on the 35kv pole tower to form 3 groups of wire loops, and a current of about 100A is generated by a large current generator to supply power to the test wires to ensure that the current ≥ 10A passes through the wires. The off-line monitoring device can take power normally and work. The windage characteristics of the conductor have nothing to do with the current flowing in the conductor. Even if the current flowing in the conductor has a certain difference, it will not affect the monitoring of the windage characteristic of the conductor. Monitor and compare the windage characteristics of six wires.

Further, the present invention uses a power supply with a capacity of 1250kVA and a three-phase 380V/1800A frequency of 50Hz to supply power to the experimental platform, and then through 2×3 260-meter ZA-YJV 1×185 cross-linked polyethylene insulated flame-retardant power cables, Realize taking power from the power supply transformer to the high-current generator device, and the cables are laid in the existing cable trenches on the test site. The other side of the cable is connected to this high-current generator. The rated power supply of the high-current generator is two-phase two-wire 380V±5%, current 1800A, frequency 50Hz±2Hz; rated AC output load current 3kA, allowable overload capacity 1.1 times, AC The load voltage is 180V, the voltage regulator range is 10%-105%, the minimum resolution is 2V, and the buck-boost time is less than 60 seconds. The rated DC output is a load current of 3kA, the allowable overload capacity is 1.1 times, the DC load voltage is 180V, the voltage regulator range is 10%-105%, the minimum resolution is 2V, and the buck-boost time is less than 60 seconds.

The output end of the large current generator is connected to the wire to be tested through two copper bars with a specification of 10*100mm ² , and the wire to be tested is erected on a 35kv tower according to the standard erection requirements. Among them, the copper bar has a large cross-section, good heat dissipation characteristics, lower cost than the cable, and the copper bar has good mechanical properties and is easy to install and connect with the branch circuit.

In a specific embodiment, the first wire to be tested is a low wind pressure wire, and the second wire to be tested is an ordinary round strand wire.

Specifically, the present invention can be applied to all kinds of overhead power transmission conductors; preferably, it can be used for low wind pressure conductors, and it is also applicable to the monitoring of the wind deviation characteristics of ordinary round strand strands. At this time, through the technology of the present invention The scheme can highlight the advantages of low wind pressure conductors having a lower drag coefficient at high wind speeds and thus a lower windage angle.

Based on the above features, the present invention can compare the windage and deflection of different wires at the same wind speed, and study the windage angle of the wire under the condition of strong wind through the wind speed and windage characteristic curve, which can highlight a certain Advantages of a low wind pressure conductor.

In a specific embodiment, the meteorological environment data includes air temperature data, humidity data, wind speed data and wind direction data;

The micrometeorological testing device includes a temperature sensor, a humidity sensor, an ultrasonic wind speed and direction sensor, a solar panel and a first wireless data transmitter;

The solar panel is used to supply power to the temperature sensor, the humidity sensor, the ultrasonic wind speed and direction sensor and the first wireless data transmitter;

The first wireless data transmitter is used to transmit the air temperature data collected by the temperature sensor, the humidity data collected by the humidity sensor, the wind speed data and the wind direction data collected by the ultrasonic wind speed and direction sensor to the wireless receiving device.

Specifically, the local meteorological conditions mainly include air temperature, humidity, wind speed, and wind direction, which can be measured by temperature sensors, humidity sensors, and ultrasonic wind speed and direction sensors respectively. Among them, all the sensors included in the micro-meteorological test device are independent of each other. Preferably, the micrometeorological testing device can use a DHT11 temperature and humidity sensor to detect the temperature and humidity of the environment.

The micro-meteorological test device can transmit micro-meteorological data to the monitoring center system (ie server) by means of WiFi communication (that is, power supply through the first wireless data transmitter); and the high-efficiency solar energy and battery power supply can meet long-time work requirements.

Further, the micro-meteorological test device can be installed on any layer of the tower where the wires are assumed to be. If only two wires to be tested are tested, then it is installed on the layer where the wires to be tested are assumed to be.

In a specific embodiment, the windage data includes a windage angle and a deflection angle;

The wind deviation monitoring device includes a dual-axis angle sensor, high-voltage power-taking equipment and a second wireless data transmitter;

The high-voltage power-taking equipment is used to supply power to the dual-axis angle sensor and the second wireless data transmitter respectively; the second wireless data transmitter is used to transmit the wind angle and deflection angle collected by the dual-axis angle sensor to the wireless receiving device.

Specifically, the wind deflection monitoring device can use a dual-axis angle sensor to measure the wind deflection angle and deflection angle; the device uses induction to obtain working power from the monitored line, which is maintenance-free and reliable in operation.

Among them, compared with the traditional single-axis inclination sensor, it can only measure the angle change around one axis. The dual-axis can measure relative to the angular change of the two axes. The tilt sensor can be installed horizontally and vertically. According to different installation methods, the angles measured by the single-axis and dual-axis tilt sensors are also different. The dual-axis can measure the roll and pitch angles, while the single-axis can only measure the roll angle when the horizontal installation is selected. Or the pitch angle, if the single axis can only measure the flip angle when the vertical installation is selected, the pitch angle is not optional.

The wind deflection characteristic test system of the overhead power transmission conductor of the present invention utilizes the 200m long span real-type tower test platform to simulate the actual line section to carry out the measurement and research of the wind deflection characteristics of the low wind pressure conductor or the ordinary round strand, that is, the research is carried out under the actual strong wind condition The windage characteristics of the wire. A micro-meteorological testing device is installed on the pole tower of the line section to be tested for real-time collection of local meteorological conditions, mainly including temperature, humidity, wind speed, and wind direction, which are measured by temperature and humidity sensors and ultrasonic wind speed and direction sensors respectively. A windage monitoring device is installed in the center for real-time monitoring of the windage of the wire. The windage monitoring device uses a dual-axis angle sensor to monitor the windage and deflection angles of the wire to be measured in real time. 6 different windages can be erected on the tower The wire to be tested, the data collected by the measuring device transmits the relevant test data to the wireless receiving device through WiFi, and the wireless receiving device uploads the collected data to the server, and the server processes the data according to the program set by the system, and the processed data can be Accurately reflect the relationship between the wind deflection angle of the conductor and the wind speed, as well as the relationship between the deflection angle and the wind speed. The invention is applicable to the research of windage characteristics of various overhead lines.

Embodiment 1 of the test method for wind deflection characteristics of overhead power transmission conductors according to the present invention:

Based on the 200m large span real-type tower test platform based on the above-mentioned wind deflection characteristic testing system architecture of overhead transmission conductors, and at the same time, in order to solve the problems of low accuracy and large safety hazards of traditional wind deflection monitoring technology, the present invention also provides an overhead transmission conductor Embodiment 1 of the method for testing the windage characteristic; Fig. 3 is a schematic flow chart of Embodiment 1 of the method for testing the windage characteristic of the overhead transmission wire of the present invention; as shown in Fig. 3 , the following steps may be included:

Step S310: When the large current generator loads current to each wire to be tested in the test loop, the micro-meteorological testing device acquires real-time meteorological environment data, and the wind deviation monitoring device acquires wind deviation data of each wire to be tested; the meteorological environment data includes air temperature data, humidity data, wind speed data and wind direction data; wind deviation data includes wind deviation angle and deflection angle;

Step S320: The server classifies the meteorological environment data and the wind deviation data to obtain the wind deviation characteristic data of the wire to be measured; the wind deviation characteristic data includes a wind speed and wind deviation characteristic curve and a wind speed deviation angle characteristic curve.

Specifically, after the test starts, real-time records of local meteorological conditions and wind deflection of the wires are obtained. The main content of the characteristic data recorded by the server is various meteorological data and their recording time and storage time of the server, wind deviation angle, deflection Angle and its recording time and server storage time, the amount of characteristic data recorded by the server will be automatically classified and sorted according to the pre-programmed program, and the processed meteorological data will be stored in a meteorological database in chronological order. The oblique angle and the corresponding wind speed and wind direction are stored in the database of the wind deviation detection device in chronological order. It is convenient to further classify and process the meteorological environment data and wind deviation data, and obtain the wind deviation characteristic data of the wire to be tested.

In a specific embodiment, the server classifies the meteorological environment data and the wind deviation data, and the step of obtaining the wind deviation characteristic data of the wire to be measured includes:

According to the meteorological environment data, the wind speed perpendicular to the wind direction of the wire and the wind speed parallel to the wind direction of the wire are respectively obtained; the wind speed perpendicular to the wind direction of the wire is the product of the wind speed data and the cosine value of the wind direction angle in the wind direction data; the wind speed parallel to the wind direction of the wire is The product of the wind speed data and the sine value of the wind direction angle in the wind direction data;

Query the wind deflection data to obtain the wind deflection angle corresponding to the wind speed perpendicular to the wind direction of the wire, and the deflection angle corresponding to the wind speed parallel to the wind direction of the wire;

According to the wind speed perpendicular to the wind direction of the wire and the corresponding wind deflection angle, a wind speed and wind deflection characteristic curve is generated; according to the wind speed parallel to the wind direction of the wire and the corresponding deflection angle, a wind speed deflection angle characteristic curve is generated.

Specifically, the server calculates the wind speed perpendicular to the wind direction of the wire and its corresponding wind deviation angle based on the wind speed and wind direction and stores them in the wind deviation characteristic database. The system calculates the wind speed parallel to the wind direction of the wire and its corresponding deviation angle Bevel angles are stored in the skew properties database. According to the completed data, the wind speed-wind deflection characteristic curve and the wind speed-deflection angle characteristic curve of the conductor can be drawn, so as to study the wind deflection of low wind pressure conductors or ordinary round strands at different wind speeds and wind directions.

Furthermore, the present invention regards wind as a physical quantity that exists on a horizontal plane, and the wind direction can exist in 360 degrees, so the wind can be decomposed into a wind speed perpendicular to the wire and a wind speed parallel to the wire, and an initial value of 0 degrees is first set Wind direction, for example, a direction perpendicular to the wind direction of the wire is set to 0 degrees, then the wind speed multiplied by the cosine of the wind direction angle is the wind speed perpendicular to the wire, and the wind speed multiplied by the sine of the wind direction angle is the wind speed parallel to the wire; The deflection angle and deflection angle are measured in real time by the monitoring system, and then the wind deflection angle and deflection angle and the calculated corresponding wind speed are stored.

In a specific embodiment, when the large current generator loads current to each wire to be tested in the test loop, in the step of obtaining the windage data of each wire to be tested by the windage monitoring device:

The wind deviation monitoring device acquires wind deviation data through real-time collection when the current value in the wire to be tested is greater than or equal to 10 amperes.

Specifically, the wires to be tested are erected on the real tower, and six types of wires to be tested can be erected on the tower to form 3 sets of wire loops. A current of about 100A is generated by a large current generator to supply power to the test wires. When the current passing through the conductor is ≥10A, the wind deflection online monitoring device on the conductor to be tested can work normally. It will not affect the monitoring of the windage characteristics of the conductors. Through this platform, the windage characteristics of six conductors can be monitored and compared at the same time.

The method for testing the wind deflection characteristics of overhead transmission wires of the present invention uses a large-gage tower rod test platform to simulate the actual line section to conduct measurement research on each wire to be tested, and the server processes the data collected in real time by the monitoring system according to the program set by the system. The final data can accurately reflect the relationship between the wind deflection angle of the conductor and the wind speed, and the relationship between the deflection angle and the wind speed. Therefore, the problem of low accuracy of the wind angle can be solved (no model and simulation process are required); at the same time, the data transmission in the present invention can be carried out in a wireless manner, so it can overcome the problems of poor mobility and inconvenient cable assistance in the traditional technology, and ensure the stability of the tower. safety.

Embodiment 1 of the testing device for wind deflection characteristics of overhead power transmission conductors according to the present invention:

In order to solve the problems of low accuracy and high potential safety hazards of the traditional wind deviation monitoring technology, the present invention also provides an embodiment 1 of a wind deviation characteristic testing device for overhead power transmission conductors; Figure 4 is an implementation of the wind deviation characteristic testing device for overhead power transmission conductors of the present invention Schematic diagram of the structure of Example 1. As shown in Figure 4, can include:

The meteorological data acquisition unit 410 is used to obtain real-time meteorological environment data when the large current generator loads current to each wire to be tested in the test loop; the meteorological environment data includes air temperature data, humidity data, wind speed data and wind direction data;

Wind deflection data acquisition unit 420, used to obtain the wind deflection data of each wire to be tested in the test loop when the large current generator loads current to each wire to be tested in the test loop; the wind deflection data includes wind deflection angle and deflection angle ;

The data processing unit 430 is used to classify and process the meteorological environment data and the wind deviation data to obtain the wind deviation characteristic data of the wire to be tested; the wind deviation characteristic data includes a wind speed and wind deviation characteristic curve and a wind speed deflection angle characteristic curve.

In a specific embodiment, the data processing unit 430 includes:

The processing module 432 is used to obtain the wind speed perpendicular to the wind direction of the wire and the wind speed parallel to the wind direction of the wire respectively according to the meteorological environment data; the wind speed perpendicular to the wind direction of the wire is the product of the cosine value of the wind direction angle in the wind speed data and the wind direction data; The wind speed based on the wind direction of the wire is the product of the wind speed data and the sine value of the wind direction angle in the wind direction data;

The query module 434 is used to query the wind deflection data, and obtain the wind deflection angle corresponding to the wind speed perpendicular to the wind direction of the conductor, and the deflection angle corresponding to the wind speed parallel to the wind direction of the conductor;

The drawing module 436 is used to generate a wind speed and wind deflection characteristic curve according to the wind speed perpendicular to the wind direction of the wire and the corresponding wind deflection angle; to generate a wind speed and deflection angle characteristic curve according to the wind speed parallel to the wind direction of the wire and the corresponding deflection angle.

It should be noted that Embodiment 1 of the device for testing the windage characteristics of overhead transmission conductors according to the present invention can correspond to the implementation of each method step in the method for testing the windage characteristics of overhead transmission conductors, which will not be repeated here.

The wind deflection characteristic testing device of the overhead power transmission wire of the present invention utilizes the large-gage tower rod test platform to simulate the actual line section to carry out the measurement and research of each wire to be tested, and the device processes the data collected in real time by the monitoring system according to the program set by the system. The final data can accurately reflect the relationship between the wind deflection angle of the conductor and the wind speed, and the relationship between the deflection angle and the wind speed. Therefore, the problem of low accuracy of the wind angle can be solved (no model and simulation process are required); at the same time, the data transmission in the present invention can be carried out in a wireless manner, so it can overcome the problems of poor mobility and inconvenient cable assistance in the traditional technology, and ensure the stability of the tower. safety.

The various technical features of the above-mentioned embodiments can be combined arbitrarily. To make the description concise, all possible combinations of the various technical features in the above-mentioned embodiments are not described. However, as long as there is no contradiction in the combination of these technical features, should be considered as within the scope of this specification. Those of ordinary skill in the art can understand that all or part of the steps in the method of the above-mentioned embodiments can be completed by instructing related hardware through a program, and the program can be stored in a computer-readable storage medium, and the program can be executed during execution When, including the steps described in the above method, the storage medium, such as: ROM/RAM, magnetic disk, optical disk, etc.

The above-mentioned embodiments only express several implementation modes of the present invention, and the descriptions thereof are relatively specific and detailed, but should not be construed as limiting the patent scope of the invention. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (10)

1. A windage characteristic monitoring system for overhead transmission wires, characterized in that it includes a micro-meteorological testing device, a wireless receiving device and a server; it also includes several groups of test loops erected between towers; The two wires to be tested of the generator and the windage monitoring device respectively arranged in the center of the span of each wire to be tested; wherein, the micro-meteorological testing device is arranged on any tower; When the large current generator loads current to the wire to be tested, the micro-meteorological testing device collects meteorological environment data in real time, and transmits the meteorological environment data to the server through the wireless receiving device; The wind deviation monitoring device collects the wind deviation data of the wire to be tested in real time, and transmits the wind deviation data to the server through the wireless receiving device; The server classifies the meteorological environment data and the wind deviation data to obtain the wind deviation characteristic data of the wire to be measured; the wind deviation characteristic data includes a wind speed and wind deviation characteristic curve and a wind speed deviation angle characteristic curve ; Wherein, the meteorological environment data includes air temperature data, humidity data, wind speed data and wind direction data. 2. The windage characteristic monitoring system for overhead power transmission conductors according to claim 1, wherein the number of the test loops is 3 groups; the two conductors to be tested are respectively the first conductor to be tested and the second conductor to be tested. Measuring wire; The first end of the first wire to be tested is connected to the first end of the second wire to be tested through a drain wire; the output end of the large current generator is respectively connected to the first end of the first wire to be tested through a copper bar. Two ends, the second end of the second wire to be tested. 3. The windage characteristic monitoring system for overhead power transmission conductors according to claim 2, characterized in that, The first wire to be tested is a low wind pressure wire, and the second wire to be tested is an ordinary round twisted wire. 4. The windage characteristic monitoring system for overhead power transmission conductors according to any one of claims 1 to 3, characterized in that, The micrometeorological testing device includes a temperature sensor, a humidity sensor, an ultrasonic wind speed and direction sensor, a solar panel and a first wireless data transmitter; The solar panel is used to supply power to the temperature sensor, the humidity sensor, the ultrasonic wind speed and direction sensor and the first wireless data transmitter; The first wireless data transmitter is used to transmit air temperature data collected by the temperature sensor, humidity data collected by the humidity sensor, wind speed data and wind direction data collected by the ultrasonic wind speed and direction sensor to the wireless receiving device. 5. The windage characteristic monitoring system of overhead power transmission wire according to claim 4, wherein said windage data comprises windage angle and deflection angle; The wind deviation monitoring device includes a dual-axis angle sensor, a high-voltage power-taking device and a second wireless data transmitter; The high-voltage power-taking device is used to supply power to the dual-axis angle sensor and the second wireless data transmitter respectively; The oblique angle is transmitted to the wireless receiving device. 6. A method for testing the windage characteristics of overhead transmission conductors based on the windage characteristic monitoring system for overhead transmission conductors according to any one of claims 1 to 5, characterized in that it comprises the following steps: When the large current generator loads current to each wire to be tested in the test circuit, the micro-meteorological testing device obtains real-time meteorological environment data, and the wind deviation monitoring device obtains the wind deviation data of each described wire to be tested; the meteorological environment data includes Air temperature data, humidity data, wind speed data and wind direction data; Described wind deflection data comprises wind deflection angle and deflection angle; Wherein, described micrometeorological testing device is arranged on any pole tower; The wind deviation data is classified and processed to obtain the wind deviation characteristic data of the wire to be tested; the wind deviation characteristic data includes a wind speed and wind deviation characteristic curve and a wind speed deflection angle characteristic curve. 7. The method for testing the windage characteristic of the overhead power transmission wire according to claim 6, wherein the server classifies the meteorological environment data and the windage data to obtain the windage characteristic data of the wire to be tested The steps include: According to the meteorological environment data, the wind speed perpendicular to the wind direction of the wire and the wind speed parallel to the wind direction of the wire are respectively obtained; the wind speed perpendicular to the wind direction of the wire is the product of the wind speed data and the cosine value of the wind direction angle in the wind direction data ; The wind speed parallel to the wind direction of the wire is the product of the wind speed data and the sine value of the wind direction angle in the wind direction data; Querying the wind deflection data to obtain the wind deflection angle corresponding to the wind speed perpendicular to the wind direction of the wire, and the deflection angle corresponding to the wind speed parallel to the wind direction of the wire; Generate the wind speed and wind deflection characteristic curve according to the wind speed perpendicular to the wind direction of the wire and the corresponding wind deflection angle; generate the wind speed and deflection angle characteristic curve according to the wind speed parallel to the wind direction of the wire and the corresponding deflection angle . 8. The method for testing the windage characteristics of overhead power transmission wires according to claim 6 or 7, characterized in that, when the large current generator loads current to each wire to be tested in the test circuit, the windage monitoring device acquires each of the wires to be tested. In the step of measuring the windage data of the traverse line: The windage monitoring device acquires the windage data through real-time collection when the current value in the wire to be tested is greater than or equal to 10 amperes. 9. A windage characteristic testing device for overhead transmission conductors based on the windage characteristic monitoring system for overhead transmission conductors according to any one of claims 1 to 5, characterized in that it comprises: The meteorological data acquisition unit applied to the micro-meteorological testing device is used to obtain real-time meteorological environment data when the large current generator loads current to each wire to be tested in the test circuit; the meteorological environment data includes air temperature data, humidity Data, wind speed data and wind direction data; Wherein, described micrometeorological test device is arranged on any pole tower; The windage data acquisition unit applied to the windage monitoring device is used to obtain the windage data of the wires to be tested in each test loop when the large current generator loads current to each wire to be tested in the test loop; Offset data includes wind angle and skew angle; The data processing unit applied to the server is used to classify and process the meteorological environment data and the wind deviation data to obtain the wind deviation characteristic data of the wire to be measured; the wind deviation characteristic data includes wind speed and wind deviation Characteristic curve and wind speed deflection angle characteristic curve. 10. The device for testing the windage characteristics of overhead power transmission conductors according to claim 9, wherein the data processing unit comprises: The processing module is used to obtain the wind speed perpendicular to the wind direction of the wire and the wind speed parallel to the wind direction of the wire respectively according to the meteorological environment data; the wind speed perpendicular to the wind direction of the wire is the wind direction angle between the wind speed data and the wind direction data The product of the cosine value; the wind speed parallel to the wind direction of the wire is the product of the wind speed data and the sine value of the wind direction angle in the wind direction data; A query module, configured to query the wind deflection data, to obtain the wind deflection angle corresponding to the wind speed perpendicular to the wind direction of the conductor, and the deflection angle corresponding to the wind speed parallel to the wind direction of the conductor; A drawing module, configured to generate the wind speed and wind deviation characteristic curve according to the wind speed perpendicular to the wind direction of the wire and the corresponding wind deflection angle; generate the wind speed according to the wind speed parallel to the wind direction of the wire and the corresponding deflection angle Skew angle characteristic curve.