Device for testing heat dissipation performance of power transmission conductor under outdoor power-on condition

Abstract

The invention discloses a device for testing the heat dissipation performance of a power transmission conductor under an outdoor power-on condition. The device comprises a to-be-tested conductor and fixing pieces for clamping the two ends of the to-be-tested conductor, the to-be-tested wire is connected in series with the current-carrying module, and the to-be-tested wire is electrically connected with the control module; the current-carrying module can apply a set current to the to-be-tested wire, the control module is used for monitoring experimental data of the to-be-tested wire in real time, the heat dissipation performance of the power transmission wire can be directly measured in a real outdoor environment under a power-on current-carrying condition, and a test result is closer to an actual operation condition; the current-carrying module and the control module are integrated in the mobile test vehicle, integration of data acquisition and analysis is realized through the control module, and heat dissipation performance parameters of the wire under different environmental conditions can be efficiently obtained. The method is suitable for various application scenes such as verification of new materials of wires, capacity increase evaluation of operation lines and research of heat dissipation mechanisms of the wires.

Description

Technical Field

[0001] This invention relates to the field of fire safety, and in particular to a device for testing the heat dissipation performance of power transmission lines under outdoor power conditions. Background Technology

[0002] In the field of power transmission line heat dissipation performance testing, existing technologies mainly fall into two categories: laboratory simulation tests and on-site operational data acquisition.

[0003] 1. Laboratory simulation tests conduct conductor heat dissipation tests by artificially controlling test conditions such as wind speed, temperature, and humidity, while on-site operation data collection relies on data such as current, temperature, and meteorological information obtained during the actual operation of transmission lines. Although laboratory simulation tests can control test conditions, they differ from real outdoor meteorological conditions (such as solar radiation, natural wind direction changes, and air pressure fluctuations), resulting in a large deviation between the test results and the heat dissipation characteristics of conductors under actual operating conditions, making it difficult to fully reflect the heat dissipation situation in the outdoor environment.

[0004] 2. On-site operation monitoring not only cannot adjust the conductor current carrying capacity under controlled conditions, but also the conductor operating environment is uncontrollable, making it difficult to systematically acquire and compare heat dissipation performance data under different meteorological conditions. At the same time, existing outdoor testing devices can usually only passively monitor the conductor operating status and lack the ability to actively apply controllable current carrying capacity in real outdoor environments and simultaneously and accurately collect conductor temperature and environmental parameters to evaluate heat dissipation performance.

[0005] In summary, the existing methods for testing the performance of conductors under test in real-world environments are not repeatable, which means that the experimental results cannot provide practical and reliable test data support for the verification of new conductor materials, the evaluation of capacity expansion of operating lines, and the study of conductor heat dissipation mechanisms.

[0006] In other words, there is a lack of existing devices for testing the heat dissipation performance of power transmission lines that can comprehensively collect environmental parameters and conductor temperature under real outdoor conditions and current-carrying conditions, and evaluate the heat dissipation performance. Summary of the Invention

[0007] Therefore, the technical problem to be solved by the present invention is that there is a lack of a device in the existing power transmission line heat dissipation performance test that can comprehensively collect environmental parameters and conductor temperature and evaluate heat dissipation performance in a real outdoor environment under current-carrying conditions.

[0008] The above-mentioned technical problems are solved by the following technical solution: The present invention proposes a test device for the heat dissipation performance of power transmission lines under outdoor power supply conditions, which includes a test line and a fixing member for clamping both ends of the test line; the test line is connected in series with a current-carrying module and electrically connected to a control module; the current-carrying module can apply a set current to the test line, and the control module is used to monitor the experimental data of the test line in real time.

[0009] In a preferred embodiment of the outdoor power transmission line heat dissipation performance testing device of the present invention, it further includes an environmental parameter acquisition module, which is electrically connected to the control module and is used to collect environmental data in the experiment and upload it to the control module; the environmental parameter acquisition module includes an anemometer, a temperature and humidity sensor, a solar radiation sensor and a barometer.

[0010] In a preferred embodiment of the outdoor power transmission line heat dissipation performance testing device of the present invention: at least one temperature sensor is provided on the surface of the conductor under test along the length direction and the circumferential direction, and the temperature sensor is used to collect the temperature distribution data of the conductor under test in real time.

[0011] In a preferred embodiment of the outdoor power transmission line heat dissipation performance testing device of the present invention: the current-carrying module includes an adjustable DC or AC power supply, which can apply a set current to the conductor to achieve current-carrying heating under actual operating conditions.

[0012] In a preferred embodiment of the outdoor power transmission line heat dissipation performance testing device of the present invention: the fixing component includes a movable platform, a support frame disposed on the movable platform, and a wire clamping and energizing block disposed at the end of the support frame; a current connector is provided on the side wall of the support frame.

[0013] In a preferred embodiment of the outdoor power transmission line heat dissipation performance testing device of the present invention: the conductor clamping and energizing block has a built-in connecting conductor, and the clamping plate of the conductor clamping and energizing block is made of conductive material; both ends of the connecting conductor are respectively connected to the current connector and the clamping plate, and both ends of the conductor to be tested are connected to the conductor clamping and energizing block through the clamping plate.

[0014] In a preferred embodiment of the outdoor power transmission line heat dissipation performance testing device of the present invention: the current-carrying module and the control module are both disposed on the inner wall of the mobile test vehicle, and a display module is also disposed on the outer wall of the mobile test vehicle, and the display module is electrically connected to the control module.

[0015] In a preferred embodiment of the outdoor power transmission conductor heat dissipation performance testing device of the present invention: the current-carrying module is connected to the current connector through a current-carrying coil, the current-carrying coil is wrapped around the outer wall of the take-up shaft, the inner wall of the take-up shaft is penetrated by a fixed shaft, the fixed shaft is connected to the inner wall of the mobile test vehicle, and the take-up shaft can rotate along the outer wall of the fixed shaft; the take-up shaft is used to take up and put down the current-carrying coil.

[0016] In a preferred embodiment of the outdoor power transmission line heat dissipation performance testing device of the present invention: the side wall of the mobile platform is provided with a snap-fit ​​connector, which is used to connect two sets of the mobile platforms and to connect the mobile platform to the mobile test vehicle.

[0017] In a preferred embodiment of the outdoor power transmission line heat dissipation performance testing device of the present invention: the snap-fit ​​component includes a connecting shaft disposed on the side wall of the moving platform and a plug-in block disposed on the other side wall of the moving platform. The plug-in block has a plug-in groove, and the connecting shaft can be connected to the two moving platforms by inserting it into the plug-in groove. The two side walls of the moving test vehicle are respectively provided with a connecting shaft and a plug-in block for connecting to the moving platform.

[0018] The beneficial effects of this invention are: this invention can directly measure the heat dissipation performance of power transmission lines in a real outdoor environment under current-carrying conditions, and the test results are closer to the actual operating conditions;

[0019] By integrating the current-carrying module and the control module into the mobile test vehicle, the overall device structure is portable and highly adaptable, and can be quickly deployed in different test sites.

[0020] The control module integrates data acquisition and analysis, enabling efficient acquisition of conductor heat dissipation performance parameters under different environmental conditions. It is suitable for various application scenarios such as verification of new conductor materials, capacity expansion assessment of operating lines, and research on conductor heat dissipation mechanisms. Attached Figure Description

[0021] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention. Wherein:

[0022] Figure 1 This diagram shows the overall structure of the device for testing the heat dissipation performance of power transmission lines under outdoor energized conditions.

[0023] Figure 2 This diagram illustrates the usage status of the power transmission line heat dissipation performance testing device under outdoor energized conditions.

[0024] Figure 3A schematic diagram of the mobile platform connection of the power transmission line heat dissipation performance testing device under outdoor power conditions is shown.

[0025] In the diagram: 1. Wire under test; 2. Fixing component; 21. Moving stage; 22. Support frame; 23. Wire clamping and energizing block; 24. Current connector; 3. Current-carrying module; 31. Current-carrying coil; 32. Take-up spool; 4. Control module; 41. Irradiance display panel; 42. Real-time current panel; 43. Setting current panel; 44. Current zero indicator light; 45. Current stop indicator light; 46. Current loading indicator light; 47. Current curve panel; 48. Thermocouple temperature display; 5. Environmental parameter acquisition module; 51. Ambient temperature; 52. Ambient humidity; 53. Wind speed display; 6. Temperature sensor; 7. Moving test vehicle; 8. Connecting component; 81. Connecting shaft; 82. Insertion block. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0027] The terminology used in this invention is that which is currently widely used in the art in consideration of the function of the invention; however, these terms may vary according to the intent of those skilled in the art, precedent, or new technology in the art. Furthermore, specific terms may be chosen by the applicant, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather based on their meanings and the overall description of the invention.

[0028] Reference Figures 1-3 This embodiment provides a device for testing the heat dissipation performance of power transmission lines under outdoor power conditions, including a test conductor 1 and a fixing member 2 that clamps both ends of the test conductor 1; the test conductor 1 is connected in series with a current-carrying module 3 and electrically connected to a control module 4; the current-carrying module 3 can apply a set current to the test conductor 1, and the control module 4 is used to monitor the experimental data of the test conductor 1 in real time.

[0029] Furthermore, it also includes an environmental parameter acquisition module 5, which is electrically connected to the control module 4. The environmental parameter acquisition module 5 is mounted on the fixing component 2 via a connecting rod and is used to collect environmental data during the experiment and upload it to the control module 4. The environmental parameter acquisition module 5 includes an anemometer, a temperature and humidity sensor, a solar radiation sensor, and a barometer. It should be noted that all sensor data is uploaded to the control module 4 for real-time recording and is correlated with the wire temperature data.

[0030] Furthermore, at least one temperature sensor 6 is provided along the length and circumference of the surface of the conductor 1 under test. The temperature sensor 6 is used to collect the temperature distribution data of the conductor 1 under test in real time. At the same time, it can be combined with an infrared thermal imaging system to monitor the temperature of the entire surface.

[0031] In some implementations, refer to Figure 1 The current-carrying module 3 includes an adjustable DC or AC power supply, which can apply a set current to the conductor to achieve current-carrying heating under actual operating conditions. It should be noted that the current value and waveform can be preset or adjusted in real time in the control system, and is equipped with current and voltage sensors to monitor the conductor 1 under test in real time.

[0032] Furthermore, the fixing component 2 includes a movable platform 21, a support frame 22 disposed on the movable platform 21, and a wire clamping and energizing block 23 disposed at the end of the support frame 22; a current connector 24 is disposed on the side wall of the support frame 22. A universal locking wheel is disposed at the bottom end of the movable platform 21.

[0033] Furthermore, the wire clamping and energizing block 23 has a built-in connecting wire, and the clamping plates of the wire clamping and energizing block 23 are made of conductive material. The two ends of the connecting wire are connected to the current connector 24 and the clamping plates, respectively. The two ends of the wire to be tested 1 are connected to the wire clamping and energizing block 23 through the clamping plates. By clamping the wire to be tested 1 with the clamping plates on the wire clamping and energizing block 23, the wire to be tested 1 can be fixed and a certain tension can be maintained to ensure the stability of the wire shape during the test.

[0034] In some implementations, refer to Figure 1 The current-carrying module 3 and the control module 4 are both located on the inner wall of the mobile test vehicle 7. A display module is also located on the outer wall of the mobile test vehicle 7. The display module is electrically connected to the control module 4.

[0035] Furthermore, the current-carrying module 3 is connected to the current connector 24 via the current-carrying coil 31. The current-carrying coil 31 is wrapped around the outer wall of the take-up shaft 32. A fixed shaft passes through the inner wall of the take-up shaft 32. The fixed shaft is connected to the inner wall of the mobile test vehicle 7. The take-up shaft 32 can rotate along the outer wall of the fixed shaft. The take-up shaft 32 is used to take up and put away the current-carrying coil 31. The surface of the mobile test vehicle 7 is coated with insulating paint for waterproofing, dustproofing, lightning protection, and electric shock protection. The bottom of the mobile vehicle is connected to universal locking wheels.

[0036] In some implementations, refer to Figure 2 and Figure 3 The side wall of the mobile station 21 is provided with a snap-fit ​​connector 8, which is used to connect two sets of mobile stations 21 together, and to connect the mobile station 21 to the mobile test vehicle 7.

[0037] Furthermore, the connector 8 includes a connecting shaft 81 disposed on the side wall of the mobile stage 21 and a plug block 82 disposed on the other side wall of the mobile stage 21. The plug block 82 has a plug groove. When the connecting shaft 81 is inserted into the plug groove, it can connect two sets of mobile stages 21. The two side walls of the mobile test vehicle 7 are respectively provided with a connecting shaft 81 and a plug block 82 for connecting with the mobile stage 21.

[0038] It should be noted that existing technologies for testing the heat dissipation performance of transmission lines mainly fall into two categories: laboratory simulation tests and on-site operational data acquisition. While laboratory tests can better control test conditions (such as wind speed, temperature, and humidity), the results deviate from actual outdoor weather conditions, making it difficult to fully reflect the heat dissipation characteristics of the conductors in outdoor environments.

[0039] On-site operation monitoring relies on actual operating data of transmission lines (such as current, temperature, and meteorological information). However, in most cases, it is difficult to adjust the current carrying capacity of conductors under controlled conditions, and the operating environment of conductors is uncontrollable, making it difficult to systematically acquire and compare heat dissipation performance data under different meteorological conditions. The key issue is that existing outdoor testing devices can generally only passively monitor the operating status of conductors and lack the ability to actively apply controllable current carrying capacity in real outdoor environments and simultaneously and accurately collect conductor temperature and environmental parameters to evaluate heat dissipation performance.

[0040] Our invention connects the current-carrying module 3 in series with the conductor 1 under test, and simultaneously sets an environmental parameter acquisition module 5 on the moving stage 21 that holds the conductor 1. Both the environmental parameter acquisition module 5 and the current-carrying module 3 are electrically connected to the control module 4. This allows the testing device to directly measure the heat dissipation performance of transmission lines in a real outdoor environment under energized current-carrying conditions, and simultaneously acquire test results under real meteorological conditions (wind speed, wind direction, temperature, humidity, solar irradiance, etc.). Furthermore, the experiment can be repeated, making the test results more closely reflect real-world operating conditions. The control module 4 integrates data acquisition and analysis, enabling efficient acquisition of conductor heat dissipation performance parameters under different environmental conditions. This invention is suitable for various applications such as new conductor material verification, operational line capacity expansion assessment, and conductor heat dissipation mechanism research.

[0041] Workflow: First, select a suitable length of test lead 1 according to the testing requirements. Fix both ends of the test lead 1 to the conductive clamping plates of the wire clamping and energizing block 23 at the ends of the support frame 22, ensuring a firm clamping and maintaining a certain tension to ensure dimensional stability. Simultaneously, through the connecting wires built into the energizing block 23, an electrical connection is formed between the test lead 1 and the current connector 24 on the side wall of the support frame 22. It should be noted that if it is necessary to expand the testing range or adjust the fixed position, multiple sets of moving stages 21 can be connected using the snap-fit ​​8 on the side wall of the moving stage 21 (inserting the connecting shaft 81 of one set of moving stages 21 into the insertion slot of the insertion block 82 of another set of moving stages 21).

[0042] Then, the current-carrying coil 31 of the current-carrying module 3 in the mobile test vehicle 7 is adjusted to a suitable length by rotating the take-up shaft 32 and connected to the current connector 24 of the fixing part 2, so that the wire under test 1 and the current-carrying module 3 form a series circuit. Then, the control module 4 in the mobile test vehicle 7 is started, and a current of a set size and waveform is applied to the wire under test 1 through the adjustable power supply of the current-carrying module 3 to simulate the current-carrying heating under the actual operating state of the wire. At the same time, the environmental parameter acquisition module 5 (including wind speed and direction meter, temperature and humidity sensor, solar radiation sensor and barometer) is turned on, so that it can collect outdoor environmental data such as wind speed, wind direction, temperature and humidity, solar radiation intensity and air pressure in real time, and upload the data to the control module 4.

[0043] At this time, the temperature sensors 6 set along the length and circumference of the surface of the conductor 1 under test will also collect the temperature distribution data of the conductor and transmit it to the control module 4. During the test, the current parameters (set current, real-time current, current curve, etc.), conductor temperature data and environmental parameters (external ambient temperature, humidity, wind speed, irradiance, etc.) can be viewed in real time through the display module on the outer wall of the mobile test vehicle 7.

[0044] The control module 4 will record and analyze all the collected data in real time. If testing is required in different outdoor locations, the mobile test vehicle 7 and the universal locking wheel at the bottom of the mobile platform 21 can be used to move the device. After arriving at the test location, the universal wheel can be locked to repeat the above operation and complete the test of the heat dissipation performance of the wire 1 under different environmental conditions.

[0045] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. A device for testing the heat dissipation performance of power transmission lines under outdoor energized conditions, characterized in that: include, The conductor to be tested (1) and the fixing parts (2) that hold the two ends of the conductor to be tested (1); The test lead (1) is connected in series with the current-carrying module (3), and the test lead (1) is electrically connected to the control module (4); The current-carrying module (3) can apply a set current to the wire under test (1), and the control module (4) is used to monitor the experimental data of the wire under test (1) in real time.

2. The device for testing the heat dissipation performance of power transmission lines under outdoor energized conditions according to claim 1, characterized in that: It also includes an environmental parameter acquisition module (5), which is electrically connected to the control module (4) to collect environmental data in the experiment and upload it to the control module (4); The environmental parameter acquisition module (5) includes a wind speed and direction sensor, a temperature and humidity sensor, a solar radiation sensor, and a barometer.

3. The device for testing the heat dissipation performance of power transmission lines under outdoor energized conditions according to claim 2, characterized in that: At least one temperature sensor (6) is provided on the surface of the conductor (1) under test along the length direction and the circumference direction. The temperature sensor (6) is used to collect the temperature distribution data of the conductor (1) under test in real time.

4. The device for testing the heat dissipation performance of power transmission lines under outdoor energized conditions according to claim 3, characterized in that: The current-carrying module (3) includes an adjustable DC or AC power supply, which can apply a set current to the conductor to achieve current-carrying heating under actual operating conditions.

5. The device for testing the heat dissipation performance of power transmission lines under outdoor energized conditions according to claim 4, characterized in that: The fixing member (2) includes a moving platform (21), a support frame (22) disposed on the moving platform (21), and a wire clamping power block (23) disposed at the end of the support frame (22); The support frame (22) is provided with a current connector (24) on its side wall.

6. The device for testing the heat dissipation performance of power transmission lines under outdoor energized conditions according to claim 5, characterized in that: The wire clamping and energizing block (23) has a built-in connecting wire, and the clamping piece of the wire clamping and energizing block (23) is made of conductive material; The two ends of the connecting wire are respectively connected to the current connector (24) and the clamping plate, and the two ends of the wire to be tested (1) are connected to the wire clamping and energizing block (23) through the clamping plate.

7. The device for testing the heat dissipation performance of power transmission lines under outdoor energized conditions according to claim 6, characterized in that: The current-carrying module (3) and the control module (4) are both located on the inner wall of the mobile test vehicle (7). A display module is also located on the outer wall of the mobile test vehicle (7). The display module is electrically connected to the control module (4).

8. The device for testing the heat dissipation performance of power transmission lines under outdoor energized conditions according to claim 7, characterized in that: The current-carrying module (3) is connected to the current connector (24) through the current-carrying coil (31). The current-carrying coil (31) is wrapped around the outer wall of the take-up shaft (32). A fixed shaft passes through the inner wall of the take-up shaft (32). The fixed shaft is connected to the inner wall of the mobile test vehicle (7). The take-up shaft (32) can rotate along the outer wall of the fixed shaft. The take-up shaft (32) is used to take up and release the current-carrying coil (31).

9. The device for testing the heat dissipation performance of power transmission lines under outdoor energized conditions according to claim 8, characterized in that: The side wall of the mobile station (21) is provided with a snap-fit ​​connector (8), which is used to connect two sets of the mobile stations (21) together, and to connect the mobile station (21) to the mobile test vehicle (7).

10. The device for testing the heat dissipation performance of power transmission lines under outdoor energized conditions according to claim 9, characterized in that: The snap-fit ​​component (8) includes a connecting shaft (81) disposed on the side wall of the moving platform (21) and a plug-in block (82) disposed on the other side wall of the moving platform (21). The plug-in block (82) has a plug-in groove. When the connecting shaft (81) is inserted into the plug-in groove, two sets of moving platforms (21) can be connected. The mobile test vehicle (7) has connecting shafts (81) and plug-in blocks (82) on its two side walls, which are used to connect with the mobile platform (21).

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