Overhead line diameter live-line tester

Abstract

The invention discloses an overhead line diameter live-line tester. The overhead line diameter live-line tester comprises a handheld end, a test end and a receiving end, the handheld end is an insulating rod body; the testing end is arranged at the end part of the handheld end, is used for carrying out live-line testing on the wire diameter and comprises a V-shaped clamping opening formed by two clamping plates, the two clamping plates are fixedly connected, the angle of the clamping opening is fixed, a position sensing element is arranged on the clamping plate on one side, a processor electrically connected with the position sensing element is also arranged on one side of the rod body, and the processor is electrically connected with the processor. And the processor is in wireless communication connection with the receiving end and is responsible for displaying the received measurement data to measurement personnel on the ground. Live-line testing is achieved through the insulating rod body, cable position data are collected through the V-shaped clamping opening and the position sensing element, clamping opening angle information is combined, and the wire diameter is calculated through the processor and transmitted to the signal receiver to be displayed. The tester can measure the wire diameter of an overhead line without power failure, is convenient to operate and high in measurement precision, and improves the working efficiency and safety.

Description

Technical Field

[0001] The invention relates to the field of power line testing equipment, and in particular to an overhead line path live tester. Background Art

[0002] The measurement of overhead line diameter is an important part of the operation and maintenance of the power system. It is of great significance for ensuring the safe and stable operation of the power system and conducting accurate line loss analysis.

[0003] Among them, the line loss rate is an important assessment indicator for power grid companies. Its calculation formula is that the line loss rate is equal to the line loss divided by the power supply. This indicator has a great impact on the economic benefits of power grid companies. All power grid companies attach great importance to it, and line loss analysis has therefore become a normal task for power grid companies.

[0004] However, in actual line loss analysis, power grid companies have rarely conducted line loss analysis on lines of 10kV and below. The main reasons are as follows:

[0005] Theoretical Level: Line loss analysis originates from power flow calculations. Commonly used methods for power flow calculations include the Newton method, the Gauss-Seidel method, and the PQ method. These methods all employ iterative calculations. Practice has shown that these methods achieve good results for lines 35kV and above. However, for lines 10kV and below, the results are poor due to complex line structures and dispersed parameters, making it difficult to meet the accuracy requirements of line loss analysis.

[0006] Practical level: The 10kV and below lines of various power grid companies are generally long and have complicated paths, resulting in incomplete line data, which brings great difficulties to line loss analysis. Based on the patented invention of "New Current Computing High-Dimensional Space Direct Algorithm", although it solves the problem of theoretical analysis of lines of 10kV and below, making it possible to accurately analyze line losses for such lines, it is very difficult to collect raw data for 10kV and below lines. Among them, wire diameter measurement is one of the key links in raw data collection. The traditional method requires power outages and personnel climbing poles to measure. This is not only complicated and inefficient, but also poses a major safety hazard. At the same time, power outages will also affect the lives of residents, and the approval process for regional power outages is also relatively cumbersome.

[0007] At present, the measurement of overhead line diameters is mainly carried out manually, requiring workers to carry measuring tools to climb to heights and directly contact the wires for measurement.

[0008] For example, CN206488731U discloses a device for measuring the diameter of a live wire. Although the device can achieve live measurement, 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 device for measuring the wire diameter and insulation of a live wire. Its structure is basically the same as that of CN206488731U, and it also uses scale lines for measurement. Although this measurement method can be performed without power outages, the measurement process still requires workers to visually read the readings, which is easily affected by human factors and has low measurement accuracy.

[0010] The main problems existing in the existing technology are: on the one hand, the traditional wire diameter measurement method requires a power outage, and the regional power outage process approval is cumbersome, which will affect the lives of residents; on the other hand, even the live measuring device mostly uses manual reading, the measurement accuracy is not high, and the operator needs to work at height, which poses a safety hazard.

[0011] In addition, existing live measurement devices have complex structures and are inconvenient to operate, making them difficult to be widely used in practical work.

[0012] Therefore, there is an urgent need for an overhead line diameter live tester with a simple structure, easy operation and high measurement accuracy, which can accurately measure the diameter of overhead lines without power outages, and provide accurate original data for line loss analysis of 10kV and below lines, thereby improving the accuracy and efficiency of line loss analysis and reducing safety risks. Summary of the Invention

[0013] In order to solve the technical problems in the prior art that measuring line diameters requires power outages, manual measurement using ladders and diameter measuring tools poses safety hazards, and the approval process for regional power outages is cumbersome, which affects residents' lives, and to achieve the technical effect of being able to measure line diameters without power outages, avoiding power outages and safety hazards, the present invention provides an overhead line diameter live tester.

[0014] The technical solution adopted by the present invention to solve the technical problem is to provide an overhead line line live tester, comprising:

[0015] A handheld end, which is an insulating rod;

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

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

[0018] The receiving end is connected to the processor via wireless communication and is used to display the measurement results.

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

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

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

[0022] In another preferred embodiment, the two clamping plates are symmetrically distributed on both sides of the axis of the insulating rod, and both are inclined at an angle of 0-15° to the insulating rod.

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

[0024] Another preferred embodiment of the position sensing element is a long strip position sensor, and the position sensor is connected to the processor via a connecting line.

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

[0026] Preferably, the processor is a single chip microcomputer.

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

[0028] The beneficial effects of the present invention are as follows: the overhead line diameter live tester provided by the present invention uses an insulating rod as a handheld end, so that it can measure the line diameter without power outage. The test end uses a "V"-shaped clamp to collect the position information of the cable, calculates the diameter information of the cable through a single-chip microcomputer, and displays the information through a signal receiver. The entire process is completed by the single-chip microcomputer, which is more accurate, convenient and fast compared to the manual reading method in the prior art. In addition, the present invention avoids the shortcomings of the prior art that require power outage operations, saves the trouble of regional power outage process approval, and will not affect the lives of residents; it also avoids the safety hazards of manually measuring with a ladder using a diameter measuring tool, thereby improving operational safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will now be described by way of example with reference to the accompanying drawings, in which:

[0030] Figure 1A schematic structural diagram of a tester according to an embodiment of the present invention;

[0031] Figure 2 FIG. 2 is a schematic structural diagram of a tester in another embodiment of the present invention. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. The components of the embodiments of the present application generally described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the application for protection, but merely represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of this application.

[0033] Example 1

[0034] A live tester for overhead line diameter, such as Figure 1 As shown, the tester is mainly composed of key parts such as a handheld terminal 1, a test terminal 2, a receiving terminal 7 and a processor 6.

[0035] The handheld terminal 1 adopts an insulating rod design. During actual measurement work, the operator can flexibly adjust the length of the telescopic rod according to specific measurement requirements. In a preferred embodiment, the insulating rod is a telescopic rod structure composed of several sections that are interconnected, similar to the structure of a fishing rod. The manufacturing material of the telescopic rod is selected from insulating materials with excellent insulation properties, such as epoxy resin, fiberglass, etc., and of course other materials with good insulation properties can also be used. This design ensures that the operator can effectively avoid the risk of electric shock during live testing and ensure personal safety.

[0036] The test terminal 2 is mounted at the end of the handheld terminal 1. Its primary function is to perform live wire diameter testing. The core structure of the test terminal 2 consists of two clamping plates 4 forming a "V"-shaped clamp. The two clamping plates 4 are fixed at the joint to maintain a fixed clamp angle. Clamping plates 4 are made of rigid materials, such as metal alloys or high-strength engineering plastics. These materials offer high strength and stability, ensuring that the angle between the clamping plates 4 does not deform due to external forces during testing, thereby ensuring accurate measurement results.

[0037] In this embodiment, one side of the clamping plate 4 is coaxial with the insulating rod, while the other side 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 clamping structure and achieves precise positioning, laying a good foundation for subsequent measurement work.

[0038] To accurately capture the position of the cable 10, a position sensing element is installed on one side of the clamping plate 4. This sensing element can be implemented as a number of pressure sensors 11 arranged in a linear array. When the cable 10 is inserted into the V-shaped clamp, contact pressure is applied to the pressure sensors 11 at specific locations. By measuring the pressure applied to these pressure sensors 11 and applying a specific conversion logic, the corresponding position of the cable 10 can be determined.

[0039] A processor 6 is also located on one side of the insulating rod. This processor 6 connects to the position sensing element via a connecting cable 5 for data transmission. Processor 6 can utilize a single-chip microcomputer as its core processing unit, and it includes 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 processor 6. Processor 6, combined with the angle information of the V-shaped clamp, uses a built-in calculation program to perform a precise calculation to determine the diameter of the cable 10.

[0040] Processor 6 is also connected to a signal receiving terminal 7, which can be a PC or a portable smart terminal such as a mobile phone. Its primary function is to receive the calculation results transmitted by processor 6 and display them clearly and intuitively. The connection between signal receiving terminal 7 and processor 6 is flexible and diverse, and wireless connections such as Bluetooth and Wi-Fi can be used, providing greater convenience for operators, allowing them to view measurement results in real time.

[0041] The operating process of this live overhead line diameter tester is as follows: the operator holds the tester's handheld terminal 1 and accurately inserts the cable 10 into the "V"-shaped clamp of the test terminal 2. At this time, the position sensing element on the side clamp 4 begins to operate, collecting the position data of the cable 10 and inputting this data into the processor 6. After receiving this data, the processor 6 combines the angle information of the "V"-shaped clamp with a built-in calculation program to quickly calculate the diameter of the cable 10. Finally, the processor 6 transmits the calculated result to the signal receiving terminal 7 for display, allowing the operator to intuitively obtain the measurement results.

[0042] This live overhead line diameter tester utilizes an insulated rod design. This innovative design enables it to measure line diameter without power outages. Compared to traditional power outage measurement methods, this significantly improves work efficiency while reducing the inconvenience and losses caused by power outages. Furthermore, the insulated design effectively ensures operator safety. Test terminal 2 uses a "V"-shaped clamp to collect the position information of cable 10. A single-chip microcomputer performs precise calculations to determine the diameter of cable 10, which is then displayed via signal receiving terminal 7. The entire measurement process is automatically performed by a microcomputer. Compared to manual readings, this method is not only more accurate but also more convenient and quicker to operate, greatly improving measurement efficiency and reliability.

[0043] Example 2

[0044] Based on the first embodiment, 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 clamping plate 4, which is coaxially arranged with the insulating rod. This side clamping plate 4 is also provided with a bump for limiting the flip lock 8. The flip lock 8 is driven by a motor, and its length is carefully designed to exactly match the distance between the ends of the two clamping plates 4.

[0046] During measurement, the motor first controls the flip lock 8 to open, leaving the V-shaped jaws 3 open, allowing the operator to easily insert the cable 10. The motor then controls the flip lock 8 to flip until its end rests on the protrusion, completing the closing motion. Once closed, the flip lock 8 secures the jaws, effectively preventing the V-shaped jaws from deforming during measurement and increasing the angle, thereby ensuring accurate measurement results.

[0047] In addition, if the distance between the ends of the two clamping plates 4 is greater than the length of the flip lock 8 during measurement, this indicates that the "V"-shaped clamp has been deformed. In this case, the subsequent measurement results will lose their reference value, and the operator needs to promptly inspect and repair the tester to ensure the accuracy of the measurement.

[0048] By adding the design of the flip lock 8, 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 the overhead line path.

[0049] Example 3

[0050] This embodiment is different from the first and second embodiments to a certain extent, which is mainly reflected in the structural design of the two clamping plates 4.

[0051] In this embodiment, the two clamping plates 4 are symmetrically positioned on either side of the insulating rod's axis. Furthermore, both clamping plates 4 are inclined at an angle of 0-15° relative to the insulating rod. This symmetrical design ensures a more even and balanced clamping force on the cable 10 during measurement, thereby ensuring measurement stability and accuracy. Compared to the asymmetric design in Example 1, the symmetrical design better accommodates cables of varying sizes and shapes, reducing measurement errors caused by cable misalignment or uneven force.

[0052] Example 4

[0053] The difference between this embodiment and the first, second and third embodiments lies in the implementation method of the position sensing element.

[0054] In this embodiment, the position sensing element utilizes a long, strip-shaped position sensor 12. This long, strip-shaped position sensor 12 offers a unique advantage: it can directly measure the position of the cable 10, eliminating the need for complex conversions like the pressure sensor 11. Therefore, the use of position sensor 12 significantly improves measurement accuracy, reduces measurement errors, and provides more reliable data support for accurate cable diameter calculations.

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

[0056] The above embodiments are intended only to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will appreciate that modifications may be made to the technical solutions described in the aforementioned embodiments, or that some of the technical features may be replaced with equivalents. Such modifications or replacements do not deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.

Claims

1. An overhead line live line tester, characterized in that: include: A handheld end (1), which is an insulating rod; A test terminal (2) is provided at the end of the handheld terminal (1) and is used for conducting a live test on the wire diameter; The test end (2) includes a V-shaped clamping opening (3) composed of two clamping plates (4), the connection between the two clamping plates (4) is fixed, and the clamping opening angle is fixed. A position sensing element is provided on one side of the clamping plate (4), and a processor (6) electrically connected to the position sensing element is also provided on one side of the rod body; The receiving end (7) is connected to the processor (6) via wireless communication.

2. The overhead line live line tester according to claim 1, characterized in that: The insulating rod body is a telescopic rod, and the telescopic rod is made of insulating material.

3. The overhead line live line tester according to claim 1, characterized in that: The one side clamping plate (4) is coaxially arranged with the insulating rod body, and the other side clamping plate (4) is inclined with respect to the insulating rod body.

4. The overhead line live line tester according to claim 3, characterized in that: A flip lock (8) is provided on one side clamp (4) coaxially arranged with the insulating rod body. 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, places the cable (10) into the "V"-shaped clamp (3), and then controls the flip lock (8) to close.

5. The overhead line live line tester according to claim 1, characterized in that: The two clamping plates (4) are symmetrically distributed on both sides of the axis of the insulating rod body, and both are inclined at an angle of 0-15 degrees with the insulating rod body.

6. The overhead line live line tester according to claim 1, characterized in that: The position sensing elements are a plurality of pressure sensors (11) arranged in a linear array.

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

8. The overhead line live line tester according to claim 1, characterized in that: The clamping plate (4) is made of rigid material.

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