An overhead power line diameter live tester

Abstract

This utility model discloses an overhead power line diameter live-line tester, including a handheld end, a testing end, and a receiving end. The handheld end is an insulated rod. The testing end, located at the end of the handheld end, is used for live-line testing of the wire diameter. It includes a "V"-shaped clamp formed by two clamps, with a fixed connection between the two clamps and a fixed clamp angle. A position sensing element is installed on one clamp, and a processor electrically connected to the position sensing element is also installed on one side of the rod. The processor is wirelessly connected to the receiving end and is responsible for displaying the received measurement data to the measurement personnel on the ground. This utility model achieves live-line testing through an insulated rod, uses the "V"-shaped clamp and position sensing element to collect cable position data, and combines the clamp angle information with the processor to calculate the wire diameter and transmit it to the signal receiver for display. This tester can measure the wire diameter of overhead lines without power interruption, is easy to operate, has high measurement accuracy, and improves work efficiency and safety.

Description

Technical Field

[0001] This utility model relates to the field of power line testing equipment, specifically to an overhead line diameter live-line tester. Background Technology

[0002] Measuring the diameter of overhead power lines is a crucial aspect of power system operation and maintenance, and is of great significance for ensuring the safe and stable operation of the power system and for conducting accurate line loss analysis.

[0003] Line loss rate is an important performance indicator for power grid companies. Its calculation formula is line loss rate equal to line loss divided by power supply. This indicator has a significant impact on the economic benefits of power grid companies, and all power grid companies attach great importance to it. As a result, line loss analysis has become a routine task for power grid companies.

[0004] However, in actual line loss analysis work, power grid companies have hardly carried out line loss analysis on 10kV and below lines, mainly for the following two reasons:

[0005] Theoretical level: Line loss analysis originates from power flow calculation. Currently, commonly used methods for power flow calculation include the Newton-Layer method, the Gauss-Seidel method, and the PQ method, all of which employ iterative calculations. Practice shows that these methods achieve good calculation results for 35kV and above lines, but for 10kV and below lines, due to factors such as complex line structure and dispersed parameters, the calculation results are very poor, making it difficult to meet the accuracy requirements of line loss analysis.

[0006] In practice: Power grid companies' 10kV and below lines generally suffer from long distances and complex routes, resulting in incomplete line data and posing significant challenges to line loss analysis. While the patented utility model based on the "New Current Calculation High-Dimensional Space Direct Algorithm" has solved the theoretical analysis difficulties of 10kV and below lines, making accurate line loss analysis possible, the acquisition of raw data for these lines remains extremely difficult. Among these challenges, wire diameter measurement, a crucial step in raw data acquisition, traditionally requires power outages and personnel climbing poles for measurement. This is not only complex and inefficient but also poses significant safety hazards. Furthermore, power outages disrupt residents' lives, and the approval process for regional power outages is cumbersome.

[0007] Currently, the measurement of overhead power line diameters is mainly carried out manually, requiring staff to carry measuring tools to climb high and directly contact the conductors for measurement.

[0008] For example, CN206488731U discloses a device for measuring the diameter of a live wire. Although the device can perform live measurements, it still requires manual reading of the scale lines, and the measurement accuracy is limited by the accuracy of the manual reading.

[0009] Similarly, CN106705800A also discloses a live conductor diameter insulation measuring device, whose structure is basically the same as CN206488731U. It also uses a scale line method for measurement. Although this measurement method can be carried out without power interruption, it still requires the operator to read the value visually during the measurement process, which is easily affected by human factors and the measurement accuracy is not high.

[0010] The main problems with existing technologies are: on the one hand, traditional wire diameter measurement methods require power outage operations, and the approval process for regional power outages is cumbersome, which will affect residents' lives; on the other hand, even live measuring devices mostly use manual readings, which are not very accurate, and operators need to work at heights, posing safety hazards.

[0011] In addition, existing live-line measuring devices are complex in structure and inconvenient to operate, making them difficult to apply widely in practical work.

[0012] Therefore, there is an urgent need for a live-line tester for overhead line diameter that is simple in structure, easy to operate, and has high measurement accuracy. This instrument can accurately measure the diameter of overhead lines without interrupting power supply, providing accurate raw data for line loss analysis of 10kV and below lines, thereby improving the accuracy and efficiency of line loss analysis and reducing safety risks. Utility Model Content

[0013] To address the technical problems of existing technologies that require power outages to measure line diameter, involve manual ladders for measurement using diameter measuring tools which pose safety hazards, and have cumbersome approval processes for regional power outages that disrupt residents' lives, this invention provides an overhead line diameter live-line tester that enables line diameter measurement without power outages, thus avoiding power outages and safety hazards.

[0014] The technical solution adopted by this utility model to solve its technical problem is: to provide an overhead line diameter live-line tester, comprising:

[0015] The handheld end is an insulated rod.

[0016] The test end, located at the end of the handheld device, is used to perform live testing on the wire diameter;

[0017] The test end includes a "V" shaped clamp formed by two clamps. The connection between the two clamps is fixed, and the angle of the clamp is fixed. A position sensing element is set on one side of the clamp, and a processor electrically connected to the position sensing element is also set on one side of the rod.

[0018] The receiver is wirelessly connected to the processor and is used to display the measurement results.

[0019] Preferably, the insulating rod is a telescopic rod made of insulating material.

[0020] Preferably, one side clamp is coaxially arranged with the insulating rod body, and the other side clamp is inclined to the insulating rod body.

[0021] Furthermore, a flip-lock is provided on one of the clamps coaxially arranged with the insulating rod. The flip-lock is driven by a motor, and its length is the same as the distance between the ends of the two clamps. During measurement, the motor controls the flip-lock to open, the cable is placed into the "V"-shaped clamp, and then the flip-lock is controlled to close. This prevents the "V"-shaped clamp from deforming during measurement, increasing the angle, and causing inaccurate measurement results. In addition, if the distance between the ends of the two clamps is greater than the length of the flip-lock during measurement, it proves that the "V"-shaped clamp has deformed, and subsequent measurement results are of no reference value.

[0022] Another preferred embodiment has two clamps symmetrically distributed on both sides of the axis of the insulating rod, each at an inclination angle of 0-15° to the insulating rod.

[0023] Preferably, the position sensing element is a plurality of pressure sensors arranged in a linear array.

[0024] Another preferred position sensing element is a strip-shaped position sensor, which is connected to the processor via a connecting wire.

[0025] Preferably, the clamping plate is made of a rigid material.

[0026] Preferably, the processor is a microcontroller.

[0027] Preferably, the signal receiver is a PC or a mobile phone.

[0028] The beneficial effects of this utility model are as follows: The overhead line diameter live-line tester provided by this utility model uses an insulated rod as a handheld end, enabling the measurement of line diameter without power interruption. The test end uses a "V"-shaped clamp to collect cable position information, and a microcontroller calculates the cable diameter information, which is then displayed by a signal receiver. The entire process is completed by the microcontroller, making it more accurate, convenient, and faster than the manual reading method in the prior art. Furthermore, this utility model avoids the disadvantage of requiring power outages in the prior art, eliminating the hassle of regional power outage approval procedures and preventing disruption to residents' lives. It also avoids the safety hazards associated with manually erecting ladders to measure diameter using the measuring tool, improving operational safety. Attached Figure Description

[0029] This utility model will be described by way of example and with reference to the accompanying drawings, wherein:

[0030] Figure 1 This is a schematic diagram of the structure of the tester in one embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the tester in another embodiment of the present invention. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0033] Example 1

[0034] An overhead power line diameter live-line tester, such as Figure 1 As shown, the tester mainly consists of key components such as a handheld terminal 1, a test terminal 2, a receiver 7, and a processor 6.

[0035] The handheld end 1 features an insulated rod design, allowing operators to flexibly adjust the length of the telescopic rod according to specific measurement needs. In a preferred embodiment, the insulated rod is a telescopic rod structure composed of several interlocking segments, similar to a fishing rod. The telescopic rod is manufactured using insulating materials with excellent insulation properties, commonly including epoxy resin and fiberglass, but other materials with good insulation characteristics can also be used. This design ensures that operators can effectively avoid the risk of electric shock during live testing, guaranteeing personal safety.

[0036] Test terminal 2 is located at the end of handheld terminal 1, and its main function is to perform live testing on the wire diameter. The core structure of test terminal 2 is a "V"-shaped clamp formed by two clamping plates 4. The two clamping plates 4 are fixedly connected at the joint, so that the clamping angle remains constant. The clamping plates 4 are made of rigid materials, such as metal alloys or high-strength engineering plastics. These materials have high strength and stability, ensuring that the angle between the clamping plates 4 will not deform due to external forces during the test, thereby ensuring the accuracy of the measurement results.

[0037] In this embodiment, one side of the clamping plate 4 is coaxially arranged with the insulating rod, while the other side of the clamping plate 4 is inclined relative to the insulating rod, thus forming a "V"-shaped clamping structure. This unique design allows the cable 10 to be more easily inserted into the clamp and achieve precise positioning, laying a good foundation for subsequent measurement work.

[0038] To accurately collect the position data of cable 10, a position sensing element is installed on the clamp 4 on one side. The position sensing element can be composed of several pressure sensors 11 arranged in a linear array. When cable 10 is inserted into the "V"-shaped clamp, it will generate contact pressure on the pressure sensor 11 at a specific position. By measuring the pressure on these pressure sensors 11 and performing certain conversion logic, the position information of cable 10 can be obtained.

[0039] On one side of the insulating rod, a processor 6 is also installed. This processor 6 is connected to the position sensing element via a connecting cable 5 for data transmission. The processor 6 can be a microcontroller as its core processing unit, and it has a pre-installed wire diameter calculation program. When the position sensing element collects the position data of the cable 10, it transmits this data to the processor 6. The processor 6 combines the angle information of the "V" shaped clamp with the built-in calculation program to perform precise calculations, thereby determining the diameter of the cable 10.

[0040] In addition, processor 6 is connected to signal receiver 7, which can be a PC or a portable smart terminal such as a mobile phone. Its main function is to receive the calculation results transmitted by processor 6 and display them clearly and intuitively. The connection between signal receiver 7 and processor 6 is flexible and can be achieved wirelessly, such as via Bluetooth or Wi-Fi, providing greater convenience for operators and enabling them to view measurement results in real time.

[0041] The operation of this overhead power line diameter live-line tester is as follows: The operator holds the handheld end 1 of the tester and accurately inserts the cable 10 into the "V"-shaped clamp of the test end 2. At this time, the position sensing element on one side clamp 4 starts working, collecting the position data of the cable 10 and inputting this data into the processor 6. After receiving the data, the processor 6 combines it with the angle information of the "V"-shaped clamp and performs a rapid calculation using its built-in calculation program to determine the diameter of the cable 10. Finally, the processor 6 transmits the calculation result to the signal receiving end 7 for display, allowing the operator to intuitively obtain the measurement result.

[0042] This overhead power line diameter live-line tester features an insulated rod design, an innovative feature that allows for wire diameter measurement without power interruption. Compared to traditional power outage measurement methods, this significantly improves work efficiency and reduces the inconvenience and losses caused by power outages. Furthermore, the insulated design effectively ensures operator safety. Test end 2 uses a "V"-shaped clamp to collect the position information of cable 10. A microcontroller performs precise calculations to determine the diameter of cable 10, which is then displayed on the signal receiver 7. The entire measurement process is automated by a microcomputer. Compared to manual reading, this method is not only more accurate but also more convenient and faster, greatly improving measurement efficiency and reliability.

[0043] Example 2

[0044] Based on Embodiment 1, this embodiment proposes a new technical solution to further improve the performance and measurement accuracy of the tester.

[0045] Specifically, a flip-lock 8 is additionally provided on one side of the clamping plate 4, which is coaxially arranged with the insulating rod. At the same time, a protrusion for limiting the flip-lock 8 is also provided on this side of the clamping plate 4. The flip-lock 8 is driven by a motor, and its length is carefully designed to be exactly the same as the distance between the ends of the two clamping plates 4.

[0046] During the measurement process, the motor first controls the flip lock 8 to open, at which point the "V"-shaped clamp 3 is in the open state, allowing the operator to easily insert the cable 10. Subsequently, the motor controls the flip lock 8 to flip until its end is positioned on the protrusion, completing the closing action. After closing, the flip lock 8 effectively secures the clamp, preventing deformation of the "V"-shaped clamp during measurement and avoiding an increase in angle, thus ensuring the accuracy of the measurement results.

[0047] Additionally, if the distance between the ends of the two clamps 4 is found to be greater than the length of the flip lock 8 during measurement, it indicates that the "V"-shaped clamp has deformed. In this case, subsequent measurement results will be worthless, and operators need to promptly inspect and repair the testing instrument to ensure measurement accuracy.

[0048] By adding the flip-lock 8 design, this embodiment further enhances the stability and reliability of the tester, effectively avoids measurement errors caused by clamp deformation, and provides a stronger guarantee for the accurate measurement of overhead line diameter.

[0049] Example 3

[0050] This embodiment differs from Embodiments 1 and 2 in some ways, mainly in the structural design of the two clamping plates 4.

[0051] In this embodiment, the two clamping plates 4 are symmetrically distributed on both sides of the axis of the insulating rod. Furthermore, both clamping plates 4 are inclined at an angle of 0-15° to the insulating rod. This symmetrical design ensures a more uniform and balanced clamping force on the cable 10 during measurement, thereby guaranteeing the stability and accuracy of the measurement. Compared to the asymmetrical design in Embodiment 1, the symmetrical design better adapts to cables of different specifications and shapes, reducing measurement errors caused by cable positional deviation or uneven force.

[0052] Example 4

[0053] The difference between this embodiment and embodiments one, two, and three lies in the implementation method of the position sensing element.

[0054] In this embodiment, the position sensing element is a strip-shaped position sensor 12. This strip-shaped position sensor 12 has a unique advantage: it can directly measure the position information of the cable 10 without the complex conversion process required by the pressure sensor 11. Therefore, using the position sensor 12 can significantly improve measurement accuracy, reduce measurement errors, and provide more reliable data support for the accurate calculation of cable diameter.

[0055] It should be noted that the implementation of the position sensing element is not limited to the pressure sensor 11 and position sensor 12 described above. Those skilled in the art, based on a full understanding of this specification, can replace the position sensing element with other electronic components capable of measuring the position of the cable 10, according to actual needs and technological developments. As long as these replaced components can achieve the same function, they are all within the scope of protection of this application.

[0056] The embodiments described above are merely illustrative of the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to depart from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An overhead line route live tester characterized by, include: The handheld end (1) is an insulating rod body; The test end (2) is set at the end of the handheld end (1) and is used to perform live testing on the wire diameter; The test end (2) includes a "V" shaped clamp (3) composed of two clamps (4). The connection between the two clamps (4) is fixed, and the angle of the clamp is fixed. A position sensing element is provided on one side of the clamp (4), and a processor (6) electrically connected to the position sensing element is also provided on one side of the rod. The receiver (7) is wirelessly connected to the processor (6).

2. The live line tester for overhead line routes according to claim 1, characterized in that, The insulating rod is a telescopic rod, which is made of insulating material.

3. The live line tester for overhead line paths according to claim 1, characterized in that, One side clamp (4) is coaxially arranged with the insulating rod body, and the other side clamp (4) is inclined to the insulating rod body.

4. The live line tester of claim 3, wherein, A flip lock (8) is provided on one side of the clamp (4) which is coaxially arranged with the insulating rod. The flip lock (8) is driven by a motor. The length of the flip lock (8) is the same as the distance between the ends of the two clamps (4). During measurement, the motor controls the flip lock (8) to open, and the cable (10) is placed into the "V" shaped clamp (3). Then, the flip lock (8) is controlled to close.

5. The live line tester for overhead line paths according to claim 1, characterized in that, The two clamps (4) are symmetrically distributed on both sides of the axis of the insulating rod, and are inclined at an angle of 0-15° to the insulating rod.

6. The live line tester for overhead line paths according to claim 1, characterized in that, The position sensing element is a number of pressure sensors (11) arranged in a linear array.

7. The overhead line diameter live-line tester according to claim 1, characterized in that, The position sensing element is a strip-shaped position sensor (12), and the position sensor (12) is connected to the processor (6) via a connecting line (5).

8. The live line tester of claim 1, wherein, The clamp (4) is made of a rigid material.

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