A collection device for remotely assessing wind damage to a power transmission line

Abstract

The application relates to the technical field of power transmission line monitoring, and particularly discloses a collection device for remotely evaluating wind damage of a power transmission line. When it is necessary to evaluate the wind damage of a specific section of the power transmission line, an operator suspends the collection device on a conductor through a roller of the collection device and drives the collection device to move to a target position, such as the central span of a section where maximum wind deviation is prone to occur, by a built-in driving mechanism. After reaching the target position, a monitoring mechanism is started, a wind speed sensor, an air pressure sensor and a temperature and humidity sensor are synchronously operated, meteorological parameters required for calculating wind load are collected, an acceleration sensor and an inclination sensor record the mechanical response of the conductor, all data are processed by a controller and are remotely transmitted. During the whole process, no matter whether the device moves or is static, vertically-installed power generation blades are always rotated under the action of wind, a transmission shaft and a second bevel gear set drive a micro power generator, and the micro power generator continuously charges a storage battery, so that continuous power is provided for the cyclic operation of the whole system.

Description

Technical Field

[0001] This application relates to the field of power transmission line monitoring technology, and in particular to a data acquisition device for remotely assessing wind damage to power transmission lines. Background Technology

[0002] As the backbone of the power system, transmission lines are constantly exposed to the natural environment and are highly susceptible to severe weather conditions such as strong winds. Wind damage typically refers to phenomena caused by wind, such as large-scale conductor galloping, wind-induced flashover, secondary span oscillations, and structural overloads. These are the main causes of line tripping, hardware damage, and even tower collapse and line breakage. Such events not only threaten the safe and stable operation of the power grid but may also trigger secondary disasters.

[0003] Given the suddenness, wide impact, and destructive power of wind hazards, current remote monitoring of wind hazards on transmission lines typically relies on miniature weather stations and image monitoring devices installed on the towers. Specifically, a monitoring base station is established at the top of a selected tower or crossarm. This base station integrates wind speed sensors, wind direction sensors, video cameras or image capture units, and is equipped with a solar power system and a wireless communication module. Wind speed and direction sensors directly measure local wind parameters at the tower location, while the video device indirectly analyzes wind deflection or galloping amplitude of the conductors by capturing images of the conductors and insulator strings using image recognition technology. Monitoring data is remotely transmitted to a central monitoring center via a wireless network, where central software displays, stores, and performs preliminary analysis, thereby achieving remote monitoring of the line environment and its overall condition.

[0004] However, for ease of installation in power supply systems, the aforementioned monitoring structures are typically mounted on towers. The wind speed they sense is the flow field near the tower after interference from the tower structure, and the conductor they observe is only a very small segment near the tower's suspension point. In reality, under strong winds, the mechanical response of transmission conductors is a holistic behavior. The maximum wind-induced displacement, maximum dynamic tension, and most severe galloping often occur in the central region of the span between two adjacent towers, where the conductor is most sensitive to wind loads due to sag. Conventional tower base monitoring devices cannot directly and accurately obtain the true wind load parameters and dynamic response at this critical location, creating a monitoring blind spot. This leads to discrepancies between the assessment results and the conductor's true most unfavorable stress state, potentially causing untimely or inaccurate early warnings and limiting the effectiveness and reliability of remote wind damage assessment technology. Utility Model Content

[0005] To address the problem that conventional monitoring structures, being fixed to towers, cannot directly and effectively monitor conductors in high-risk areas such as the center of the span, this application provides a data acquisition device for remotely assessing wind damage to transmission lines.

[0006] This application provides a data acquisition device for remotely assessing wind damage to transmission lines, which adopts the following technical solution: A data acquisition device for remotely assessing wind damage to transmission lines includes a mounting box, a bracket fixed to the top of the mounting box, and a roller rotatably mounted inside the bracket for slidingly attaching the bracket to the transmission line. The mounting box and the bracket are provided with a drive mechanism for driving the rotation of the roller. The mounting box is also equipped with a monitoring mechanism for monitoring wind damage and a power supply mechanism for supplying power to the drive mechanism and the monitoring mechanism.

[0007] Optionally, two brackets are provided along the direction of the power transmission line relative to the mounting box, and each bracket is provided with rollers. The driving mechanism is used to drive the two rollers synchronously.

[0008] Optionally, the drive mechanism includes a rotating shaft, pulleys, a belt, a first bevel gear set, and a dual-axis motor. Two rotating shafts are provided corresponding to the two rollers, both located within the mounting box. Two sets of pulleys are coaxially arranged corresponding to the rollers and the rotating shaft. The belt is used to synchronously drive the rollers and the pulleys on the rotating shaft. Two sets of the first bevel gear set are provided corresponding to the two rotating shafts. The dual-axis motor is fixedly installed within the mounting box. The two first bevel gear sets are respectively used to drive the shaft ends corresponding to the rotating shaft and the dual-axis motor.

[0009] Optionally, the monitoring mechanism includes an anemometer, a barometric pressure sensor, a temperature and humidity sensor, an accelerometer, and a tilt sensor. The anemometer, barometric pressure sensor, temperature and humidity sensor, accelerometer, and tilt sensor are all mounted on the mounting box. The mounting box contains a controller that is electrically connected to the anemometer, barometric pressure sensor, temperature and humidity sensor, accelerometer, and tilt sensor. The power supply mechanism provides power to the controller, anemometer, barometric pressure sensor, temperature and humidity sensor, accelerometer, and tilt sensor.

[0010] Optionally, the power supply mechanism includes a battery installed in the mounting box and a power generation component that replenishes the battery with power.

[0011] Optionally, the power generation component includes a micro generator, a drive shaft, power generation blades, and a second bevel gear set. The micro generator is installed inside the mounting box, the drive shaft is rotatably installed outside the mounting box, the power generation blades are coaxially fixed to the end of the drive shaft and oriented perpendicular to the direction of the mounting box, and the second bevel gear set is disposed between the micro generator and the drive shaft and is used to enable the two to drive each other.

[0012] In summary, this application includes at least one of the following beneficial technical effects: 1. This application enables the device to travel along the conductor by integrating a drive mechanism. When it is necessary to assess traditional blind areas such as the center of the span far from the tower, the data acquisition device can drive the roller to move to the target position, thereby realizing in-situ and direct monitoring of any high-risk section within the entire tension section. This avoids the problem of insufficient data representativeness caused by fixed installation and provides accurate first-hand data for wind damage assessment. 2. This application adopts a double-bracket and double-roller layout, combined with a drive mechanism consisting of a dual-axis motor, a first bevel gear set, pulleys and belts, to achieve strict synchronous drive of the two rollers by a single power source. When the data acquisition device is started, the power of the dual-axis motor is changed in direction by the first bevel gear set and then synchronously transmitted to the two rollers through the belt. This mechanical linkage design ensures that the data acquisition device will not deviate, jam or twist when moving along the guide wire, providing a stable working platform for the internal precision sensor, so that high-quality monitoring data can be obtained even when in motion. 3. The data acquisition device is equipped with an anemometer, barometer, temperature and humidity sensor, accelerometer, and tilt sensor. When the device arrives at the monitoring point, the anemometer measures the airflow velocity, while the data collected by the barometer and temperature and humidity sensor can be used to accurately calculate the current air density in the background. The combination of the two can derive accurate wind load parameters. At the same time, the accelerometer and tilt sensor directly capture the vibration, galloping, and spatial attitude changes of the conductor itself. This multi-parameter in-situ synchronous acquisition makes it possible to analyze the real-time relationship between wind pressure and the dynamic response of the conductor, significantly improving the systematicness and accuracy of the assessment. 4. This application has a self-powered function to support its long-term autonomous operation in a passive environment in the field. In particular, the power generation blades are arranged perpendicular to the direction of the mounting box. This allows the blades to effectively capture natural wind energy perpendicular to the direction of the conductor and convert it into electrical energy for storage, whether the device is stationary or moving along the conductor. This achieves spatial and temporal decoupling and parallel operation of energy acquisition and monitoring tasks, greatly extends the maintenance cycle, and ensures the long-term continuity of monitoring tasks. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of the data acquisition device during installation in this embodiment; Figure 2 yes Figure 1 A schematic diagram of the overall structure of the data acquisition device; Figure 3 yes Figure 2 Front view of the data acquisition device; Figure 4 yes Figure 2 A schematic diagram of the internal structure of the data acquisition device.

[0015] Reference numerals: 1. Mounting box; 11. Bracket; 12. Roller; 2. Drive mechanism; 21. Pulley; 22. Belt; 23. First bevel gear set; 24. Dual-shaft motor; 3. Monitoring mechanism; 31. Anemometer; 32. Barometric pressure sensor; 33. Temperature and humidity sensor; 34. Accelerometer; 35. Tilt sensor; 4. Power supply mechanism; 41. Battery; 5. Controller; 6. Power generation component; 61. Micro generator; 62. Drive shaft; 63. Power generation blades; 64. Second bevel gear set. Detailed Implementation

[0016] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail below.

[0017] This application discloses a data acquisition device for remotely assessing wind damage to power transmission lines.

[0018] Reference Figure 1 and Figure 2 A data acquisition device for remotely assessing wind damage to transmission lines includes a mounting box 1, a bracket 11 fixed on the top of the mounting box 1, a roller 12 rotatably mounted inside the bracket 11 for slidingly attaching the bracket 11 to the transmission line, and a drive mechanism 2 for driving the rotation of the roller 12 is provided inside the mounting box 1 and the bracket 11.

[0019] Reference Figure 3 and Figure 4 The installation box 1 is also equipped with a monitoring mechanism 3 for monitoring wind damage and a power supply mechanism 4 for supplying power to the drive mechanism 2 and the monitoring mechanism 3.

[0020] When the data acquisition device needs to be deployed on the power transmission line, the entire device can be slidably hung on the power transmission line by means of the roller 12 rotatably installed in the bracket 11, realizing a non-fixed connection between the device and the power transmission line, which is convenient for installation and initial positioning. In this embodiment, it is directly set to an openable state, which is convenient for hanging the roller 12 on the power transmission line and also convenient for removing the data acquisition device from the power transmission line.

[0021] In order to increase the friction between the roller 12 and the transmission line and reduce the damage to the transmission line during the rolling of the roller 12, a wear-resistant and anti-slip layer made of high-performance polyurethane elastomer is fixed on the surface of the roller 12. In other embodiments, the wear-resistant and anti-slip layer may also be made of materials such as neoprene rubber.

[0022] The surface of the wear-resistant and anti-slip layer can be processed with regular herringbone patterns, diamond patterns, or interlaced grid patterns. Polyurethane has excellent wear-resistant and anti-slip properties, and its wear rate is much lower than the hardness of the coating on the surface of the power transmission line. Therefore, it will not scratch or corrode the power transmission line like metal or some rough rubber. Polyurethane also has excellent resistance to ultraviolet aging, ozone resistance, and wide temperature range performance, which meets the application requirements of high-altitude power transmission lines.

[0023] The drive mechanism 2 installed in the mounting box 1 and the bracket 11 can drive the rotation of the roller 12. The drive is controlled remotely. The mounting box 1 is equipped with a control system for controlling various electrical components. The operator can control the control system wirelessly, so that the control system can control various electrical components.

[0024] When the wind damage risk of a certain section of the conductor needs to be assessed, the operator controls the drive mechanism 2, which drives the roller 12 to rotate, so that the entire installation box 1 and the mechanism on the box move along the conductor. This enables the data acquisition device to move autonomously to the target location on the transmission line according to the monitoring needs, such as the central area of ​​the span away from the tower. This overcomes the inherent defects of traditional fixed monitoring devices, such as the single monitoring location and inability to cover high-risk sections of the conductor.

[0025] Specifically, refer to Figure 1 and Figure 2 There are two brackets 11 along the direction of the power transmission line in relation to the mounting box 1. Each bracket 11 is equipped with a roller 12. The drive mechanism 2 is used to drive the two rollers 12 synchronously.

[0026] The drive mechanism 2 synchronously drives the two rollers 12, ensuring the consistency of force and movement on both sides when the device moves. In this embodiment, the weight of the entire acquisition device is balanced. The specific balancing method is to adjust the installation position of each component so that the center of gravity of the entire acquisition device is close to the direct below the power transmission line.

[0027] The entire acquisition device, including the mounting box 1 and other adjustable components, is made of lightweight materials. The mounting box 1 is made of aluminum alloy, such as 6061 aluminum alloy or 7075 aluminum alloy.

[0028] When the device is on undulating conductors or encounters swaying, the layout of the double support 11 and double rollers 12 provides additional lateral stability, achieving a more stable posture and less lateral torsion or jamming when the device moves along the conductor, providing a stable working platform for the precision monitoring mechanism 3 inside the device.

[0029] Reference Figure 4 The drive mechanism 2 includes a rotating shaft, a belt 22, a pulley 21, a belt 22, a first bevel gear set 23, and a dual-axis motor 24. The rotating shaft has two pulleys 12 corresponding to the two rollers 12, both of which are located inside the mounting box 1. The belt 22 and pulley 21 are coaxially arranged in two sets corresponding to the rollers 12 and the rotating shaft. The belt 22 is used to synchronously drive the rollers 12 and the belt 22 and pulley 21 on the rotating shaft. The first bevel gear set 23 is arranged in two sets corresponding to the two rotating shafts. The dual-axis motor 24 is fixedly installed inside the mounting box 1. The two first bevel gear sets 23 are used to drive the shaft ends of the corresponding rotating shaft and the corresponding dual-axis motor 24, respectively.

[0030] It is worth noting that, in order for the dual-axis motor 24 to drive the two rollers 12 to rotate synchronously, the two sets of first bevel gear sets 23 are set in the same direction. The first bevel gear set 23 includes a first driving bevel gear and a first driven bevel gear. The two sets of first driving bevel gears are oriented in the same direction, and the two sets of second driven bevel gears are oriented in the same direction.

[0031] When the dual-axis motor 24 is working, the power from its two output shafts is redirected by two sets of first bevel gears 23, driving the corresponding rotating shafts and belts 22 and pulleys 21. Ultimately, the belts 22 synchronously drive the two rollers 12 to rotate at the same speed. This structure achieves the use of a compact dual-axis motor 24 as the sole power source, ensuring that the rollers 12 on both sides rotate in strict synchronous forward and reverse directions through mechanical linkage. The power transmission path is clear and reliable, facilitating integration and maintenance within the narrow mounting box 1.

[0032] Reference Figure 2 , Figure 3 and Figure 4 The monitoring mechanism 3 includes an anemometer 31, a barometric pressure sensor 32, a temperature and humidity sensor 33, an acceleration sensor 34, and a tilt sensor 35. The anemometer 31, barometric pressure sensor 32, temperature and humidity sensor 33, acceleration sensor 34, and tilt sensor 35 are all installed on the mounting box 1. The mounting box 1 is equipped with a controller 5 that is electrically connected to the anemometer 31, barometric pressure sensor 32, temperature and humidity sensor 33, acceleration sensor 34, and tilt sensor 35. The controller 5 is the control system mentioned above. The power supply mechanism 4 provides power to the controller 5, anemometer 31, barometric pressure sensor 32, temperature and humidity sensor 33, acceleration sensor 34, and tilt sensor 35.

[0033] In this embodiment, the anemometer 31 is fixedly mounted on the mounting box 1, with its sensing end located at the top of the mounting box 1. The air pressure sensor 32 and the temperature and humidity sensor 33 are fixedly mounted on the outer wall of the mounting box 1. The tilt sensor 35 is fixed to the middle of the bottom wall of the mounting box 1, and the acceleration sensor 34 is fixedly mounted inside the mounting box 1. In other feasible embodiments, the mounting positions of the anemometer 31, air pressure sensor 32, temperature and humidity sensor 33, acceleration sensor 34, and tilt sensor 35 can be adjusted adaptively. The mounting positions in this embodiment are only one preferred implementation.

[0034] When the device is moved to the target location and a comprehensive assessment of wind damage is required, the anemometer 31 integrated on the mounting box 1 can directly measure the wind speed data at that point, while the air pressure sensor 32 and the temperature and humidity sensor 33 can simultaneously measure the air pressure, temperature and humidity data at that point. By fusing these three types of data, the current air density can be calculated, thus providing key parameters for accurate calculation of wind load.

[0035] Meanwhile, the accelerometer 34 and tilt sensor 35 installed on the mounting box 1 can measure the vibration acceleration and spatial tilt angle of the device, respectively, for analyzing the dynamic response of the conductor, such as galloping and wind deflection. All sensor data are collected by the controller 5 inside the mounting box 1, realizing multi-dimensional, in-situ, synchronous acquisition and preliminary processing of wind speed, meteorological parameters that can be used to derive wind load, and conductor mechanical response status at mobile monitoring points, providing a comprehensive and spatiotemporally consistent data foundation for remote assessment of wind damage.

[0036] Reference Figure 3 and Figure 4 The power supply mechanism 4 includes a storage battery 41 installed in the mounting box 1, and a power generation component 6 that replenishes the storage battery 41 with power.

[0037] When the device operates for a long time on a passive power transmission line in the field, the battery 41 installed in the installation box 1 can provide continuous power to the drive mechanism 2, the controller 5 in the monitoring mechanism 3 and various sensors, ensuring the basic operation of the device under conditions without external power grid supply.

[0038] The setting of the power generation component 6 enables the acquisition of energy from the external environment and the replenishment of power to the battery 41, thereby greatly extending the continuous working time of the device. During this process, a detection structure for detecting the power of the battery 41 can also be set on the controller 5. The operator can remotely acquire the power. If the power generation component 6 is not working properly, the operator can retrieve the acquisition device before the power is exhausted and recharge the battery 41.

[0039] The power generation component 6 in this embodiment reduces the number of manual maintenance required due to power depletion causing monitoring interruptions, enabling the device to operate autonomously for extended periods in remote line sections.

[0040] Specifically, refer to Figure 3 and Figure 4 The power generation component 6 includes a micro generator 61, a drive shaft 62, a power generation blade 63, and a second bevel gear set 64. There are two sets of power generation components 6, which are roughly positioned between the two supports 11. The micro generator 61 is installed inside the mounting box 1, the drive shaft 62 is rotatably installed outside the mounting box 1, the power generation blade 63 is coaxially fixed to the end of the drive shaft 62, and its orientation is perpendicular to the direction of the mounting box 1. The second bevel gear set 64 is located between the micro generator 61 and the drive shaft 62 and is used to connect the two for transmission.

[0041] In this embodiment, there are two power generation blades 63 corresponding to the drive shaft 62, and a total of four power generation blades 63 are provided in the two sets of power generation components 6.

[0042] When there is wind, the generator blades 63, which are perpendicular to the mounting box 1, rotate under the action of the wind, driving the transmission shaft 62, which is fixed on the same axis, to rotate. The power of the transmission shaft 62 is transmitted through the second bevel gear set 64 and drives the rotor of the micro generator 61 to rotate and generate electricity.

[0043] When the device moves along the conductor, its direction is usually consistent with the conductor. The vertically set power generation blades 63 can effectively utilize natural wind energy perpendicular to the direction of the conductor to generate electricity. This enables the device to convert mechanical energy into electrical energy in real time to charge the battery 41 while performing monitoring tasks, utilizing the most common wind energy resources in its working environment. This improves the energy self-sufficiency efficiency and the system's endurance.

[0044] The implementation principle of a remote assessment device for wind damage of transmission lines in this application embodiment is as follows: when it is necessary to assess wind damage in a specific section of the transmission line, the operator suspends the acquisition device on the conductor via its rollers 12 and drives it to move autonomously along the conductor to the target position, such as the center of the span where the maximum wind deflection is likely to occur.

[0045] Upon arrival, the monitoring unit 3 is activated, and the wind speed, air pressure, temperature and humidity sensors 33 work synchronously to collect meteorological parameters required for calculating wind load. At the same time, the acceleration and tilt sensors 35 record the mechanical response of the conductor. All data are processed by the controller 5 and transmitted remotely.

[0046] Throughout the process, whether the device is moving or stationary, its vertically mounted power generation blades 63 always rotate under the action of the wind, driving the micro generator 61 through the transmission shaft 62 and the second bevel gear set 64, continuously charging the storage battery 41, thereby providing continuous power for the cyclic operation of the entire system.

[0047] The above are all optional embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A data acquisition device for remotely assessing wind damage to transmission lines, characterized in that: The system includes a mounting box (1), a bracket (11) fixed on the top of the mounting box (1), a roller (12) for slidingly attaching the bracket (11) to the power transmission line is rotatably installed inside the bracket (11), and a drive mechanism (2) for driving the rotation of the roller (12) is provided inside the mounting box (1) and the bracket (11). The mounting box (1) is also equipped with a monitoring mechanism (3) for monitoring wind damage and a power supply mechanism (4) for supplying power to the drive mechanism (2) and the monitoring mechanism (3).

2. The data acquisition device for remotely assessing wind damage to transmission lines according to claim 1, characterized in that: There are two brackets (11) arranged along the direction of the power transmission line relative to the mounting box (1). Each bracket (11) is equipped with a roller (12). The driving mechanism (2) is used to drive the two rollers (12) synchronously.

3. The data acquisition device for remotely assessing wind damage to transmission lines according to claim 2, characterized in that: The drive mechanism (2) includes a rotating shaft, a belt (22) pulley (21), a belt (22), a first bevel gear set (23), and a dual-axis motor (24). The rotating shaft is provided with two rollers (12) and both are located in the mounting box (1). The belt (22) pulley (21) is coaxially provided with two sets of rollers (12) and rotating shaft. The belt (22) is used to synchronously drive the rollers (12) and the belt (22) pulley (21) on the rotating shaft. The first bevel gear set (23) is provided with two sets of rotating shafts. The dual-axis motor (24) is fixedly installed in the mounting box (1). The two first bevel gear sets (23) are respectively used to drive the shaft ends of the rotating shaft and the dual-axis motor (24).

4. The data acquisition device for remotely assessing wind damage to transmission lines according to claim 1, characterized in that: The monitoring mechanism (3) includes an anemometer (31), a barometric pressure sensor (32), a temperature and humidity sensor (33), an accelerometer (34), and a tilt sensor (35). The anemometer (31), barometric pressure sensor (32), temperature and humidity sensor (33), accelerometer (34), and tilt sensor (35) are all installed on the mounting box (1). The mounting box (1) is equipped with a controller (5) that is electrically connected to the anemometer (31), barometric pressure sensor (32), temperature and humidity sensor (33), accelerometer (34), and tilt sensor (35). The power supply mechanism (4) provides power to the controller (5), anemometer (31), barometric pressure sensor (32), temperature and humidity sensor (33), accelerometer (34), and tilt sensor (35).

5. The data acquisition device for remotely assessing wind damage to transmission lines according to claim 4, characterized in that: The power supply mechanism (4) includes a battery (41) installed in the mounting box (1) and a power generation component (6) that replenishes the battery (41) with electrical energy.

6. The data acquisition device for remotely assessing wind damage to transmission lines according to claim 5, characterized in that: The power generation component (6) includes a micro generator (61), a drive shaft (62), power generation blades (63), and a second bevel gear set (64). The micro generator (61) is installed inside the mounting box (1). The drive shaft (62) is rotatably installed outside the mounting box (1). The power generation blades (63) are coaxially fixed to the end of the drive shaft (62) and are oriented perpendicular to the direction of the mounting box (1). The second bevel gear set (64) is disposed between the micro generator (61) and the drive shaft (62) and is used to connect the two in a transmission manner.

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