Alternating current and direct current overhead line hybrid non-contact electricity testing device and electricity testing method

Abstract

The invention relates to the technical field of electricity testing devices, in particular to a non-contact electricity testing device for alternating current and direct current overhead line mixing and an electricity testing method.The non-contact electricity testing device comprises a moving plate and an electrode plate, the moving plate is rotationally arranged, and the moving plate and the electrode plate are arranged in the extending direction of the rotating axis of the moving plate; metal coatings are arranged on the surfaces, close to and away from the movable plate, of the electrode plates. Through the design that the moving plate and the electrode plate are arranged in the direction of the rotating axis, the double-sided metal coating structure of the electrode plate is combined, the alternating-current and direct-current electric field is detected through one device, integration of the electricity testing device is achieved, and the operation efficiency is improved.

Description

Technical Field

[0001] The present application relates to the field of electrical testing devices, and in particular to a non-contact electrical testing device and method for hybrid AC and DC overhead lines. Background Art

[0002] Before installing a grounding wire in a power outage area, a voltage test is required to confirm that the line is free of voltage before proceeding. To improve safety and operational efficiency, existing technologies often use drones to carry non-contact voltage testing devices for this purpose.

[0003] Existing non-contact electrical testing technologies use different measurement methods for AC and DC. AC is often measured using alternating current (AC) sensors, while DC is often measured using atmospheric electric field meters. These two technologies employ different approaches and their computational analysis processes differ significantly. For example, an atmospheric electric field meter consists of a rotating rotor and a fixed stator. The stator is a metal coating, and DC electric field measurements are performed by creating a potential difference between the rotor and the stator. However, atmospheric electric field meters cannot measure AC electric fields.

[0004] However, in actual lines, there is a mixed distribution of AC and DC lines. When performing non-contact electrical testing using drones, it is necessary to switch different electrical testing devices to confirm the power status of the lines, which is cumbersome to operate and reduces work efficiency. Summary of the Invention

[0005] In order to improve the efficiency of electrical testing operations, the present application provides a non-contact electrical testing device and method for hybrid AC and DC overhead lines.

[0006] The present application provides a non-contact electrical testing device and method for AC / DC overhead lines, which adopt the following technical solutions: A non-contact electrical testing device for mixed AC and DC overhead lines includes a rotor and an electrode plate. The rotor is rotatably arranged and arranged along the extension direction of the rotating axis of the rotor. Metal coatings are provided on the surfaces of the electrode plate close to and away from the rotor.

[0007] By adopting the above technical solution, with the rotor and electrode plates arranged along the axis of rotation, combined with the double-sided metal coating of the electrode plates, a single device can detect AC and DC electric fields. When the rotor rotates, a potential difference is formed between the metal coating on the electrode plates, which can be used to measure DC electric fields. When the rotor is fixed, a potential difference is formed between the metal coatings on both sides of the electrode plates, which can be used to measure AC electric fields. This achieves an integrated electrical detection device and improves operational efficiency.

[0008] Optionally, a reflective photoelectric switch is further included, and the movable plate includes a reflective portion. When the reflective portion rotates above the reflective photoelectric switch, the reflective portion reflects the light emitted by the reflective photoelectric switch back to the reflective photoelectric switch.

[0009] By adopting the above technical solution, the existing technology sets up a small rotatable blade and a fixed photoelectric switch. The small blade is located between the photoelectric switch. The rotation of the small blade causes the photoelectric switch to generate a periodic pulse signal to determine the polarity of the electric field. However, such a setting makes the electrical testing device larger in size, and the small blade occupies a certain space. The present application omits the small blade and the photoelectric switch, and introduces a reflective photoelectric switch and a reflecting part on the movable plate. When the movable plate rotates, the reflecting part blocks the light and reflects the light on the reflective photoelectric switch, so that the reflective photoelectric switch can generate a periodic pulse signal to determine the polarity of the electric field. Compared with the structure of the existing technology, the overall volume of the electrical testing device is reduced, the space occupied by the electrical testing device is greatly reduced, and the weight of the electrical testing device is reduced to facilitate the use of drones.

[0010] Optionally, the movable plate includes a connecting plate and a plurality of rotating plates, the rotating plates are fixedly connected to the connecting plate, the reflecting portion is located on the connecting plate, a light-absorbing layer is provided on the surface of the connecting plate close to the electrode plate, the light-absorbing layer is used to absorb the light emitted by the reflective photoelectric switch, the reflecting portion and the light-absorbing layer are spaced apart around the rotation axis of the movable plate, and the projection of the rotation range of the reflecting portion and the light-absorbing layer in the extension direction of the rotation axis of the movable plate completely covers the reflective photoelectric switch.

[0011] By adopting this technical solution, the structural design of the connecting plate and multiple rotating plates, combined with the spacing between the reflective portion and the light-absorbing layer, ensures that light from the reflective photoelectric switch is effectively absorbed or reflected during the rotation of the rotating plate, thus preventing optical signal interference. The projection of the light-absorbing layer and the reflective portion overlays the photoelectric switch, further optimizing signal detection sensitivity and anti-interference capabilities. This reduces the impact of daytime sunlight on detection accuracy, allowing the reflective photoelectric switch to adapt to different lighting environments, both daytime and nighttime, and expanding the device's application scenarios.

[0012] Optionally, a plurality of the rotating plates are arranged along the circumference of the connecting plate.

[0013] By adopting the above technical solution, the design of arranging the rotating plates along the circumference of the connecting plate enhances the balance and stability of the rotating plates, reduces the influence of mechanical vibration on the potential difference measurement, thereby improving the accuracy of AC and DC electric field measurement, and reducing the overall volume of the connecting plate, thereby reducing production costs.

[0014] Optionally, it also includes a shell, the movable plate and the electrode plate are both arranged on the shell, a driving source is provided in the shell, the driving source is used to drive the movable plate to rotate, a movable part is movably provided on the shell, a button is provided on the shell, the movable part is used to movably trigger the button, and a driving component is provided on the movable plate and the movable part, and when the movable plate rotates, the driving component is used to drive the movable part to move away from the button.

[0015] By adopting this technical solution, when the drive source is functioning normally, the rotor rotates, and the drive assembly drives the movable member away from the button. If the drive source malfunctions, the rotor stops rotating, the drive assembly stops functioning, and the movable member moves toward the trigger button, alerting the user to a drive source failure. If the electric field cannot be measured, the user can also use this method to determine the source of the fault and eliminate other causes.

[0016] Optionally, the driving component includes a magnet provided on the moving plate and an electromagnet provided on the movable part, and the driving source is also used to drive the electromagnet to work, and the electromagnet repels the magnet.

[0017] By adopting the above technical solution and using a driving mode in which magnets and electromagnets repel each other, the movable parts are driven to move by non-contact electromagnetic force, thereby reducing mechanical wear and extending the life of the device.

[0018] Optionally, the movable part is rotatably arranged on the shell, the rotation axis of the movable part is perpendicular to the rotation axis of the movable plate, the movable part is located on the side of the movable plate away from the electrode plate, the movable part includes a driving end and a triggering end, the driving component on the movable part is located on the driving end, the triggering end is used to trigger a button, the driving section is between the rotation axis of the movable part and the driving end, the trigger section is between the rotation axis of the movable part and the triggering end, and the mass of the driving section is greater than the mass of the triggering section.

[0019] By adopting this technical solution, the movable part's axis of rotation is perpendicular to the rotor, and the driving section has a greater mass than the trigger section, leveraging gravity or inertia to automatically reset the movable part. This design simplifies the complexity of the trigger mechanism and improves the response speed and consistency of the button trigger.

[0020] Optionally, a limit plate is provided on the shell, and the limit plate is located on a side of the movable part away from the button, and the limit plate is used to abut against the trigger end.

[0021] By adopting the above technical solution, on the basis of the button preliminarily limiting the range of movement of the trigger end, the limit plate interferes with and limits the movable part, further limiting the range of movement of the trigger end, ensuring that the movable part can be reset, and enhancing the mechanical stability and operational reliability of the device.

[0022] A method for testing electricity, using a non-contact electricity testing device for AC and DC overhead lines, includes the following steps: S1. Measuring a DC electric field: The rotor rotates, and a potential difference is formed between the rotor and the metal coating on the surface of the electrode plate close to the rotor. The potential difference is measured and calculated to obtain a DC electric field; S2. Measuring the AC electric field: The moving piece is fixed, and a potential difference is formed between the metal coatings on the two surfaces of the electrode plate close to and away from the moving piece. The potential difference is measured and calculated to obtain the AC electric field.

[0023] By employing this technical solution, the rotor can be rotated or fixed in either mode, utilizing the potential difference between the metal coatings on one side and both sides of the electrode plate to achieve time-sharing measurement of AC and DC electric fields. This method can complete hybrid circuit testing without switching equipment, significantly improving testing efficiency and reducing operational complexity.

[0024] Optionally, a reflective photoelectric switch is provided on the electrode plate, the movable plate includes a reflecting part, and the S1 step also includes a step of determining the polarity of the electric field. The movable plate rotates, and the reflective photoelectric switch continuously emits light. When the reflecting part rotates above the reflective photoelectric switch, the reflecting part reflects the light emitted by the reflective photoelectric switch back to the reflective photoelectric switch, and the reflective photoelectric switch detects the light.

[0025] By adopting the above technical solution and combining the linkage detection of the reflective photoelectric switch and the reflective part of the moving piece, the electric field polarity can be synchronously judged in the DC electric field measurement.

[0026] In summary, this application includes at least one of the following beneficial technical effects: 1. The design of arranging the rotor and electrode plates along the rotation axis, combined with the double-sided metal plating structure of the electrode plates, allows the detection of AC and DC electric fields through a single device, realizing the integration of the electrical testing device and improving operating efficiency. 2. The small blade and photoelectric switch are eliminated, and a reflective photoelectric switch and a reflective part on the moving piece are introduced, which reduces the overall size of the electrical test device, significantly reduces the space occupied by the electrical test device, and reduces the weight of the electrical test device, making it easier to use on drones; 3. The sensitivity and anti-interference ability of signal detection are optimized, reducing the impact of sunlight on detection accuracy during the day, allowing the reflective photoelectric switch to adapt to different lighting environments such as day and night, and improving the application scenarios of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a structural diagram of Example 1 of the present application.

[0028] Figure 2 It is a structural diagram of the hidden shell of Example 1 of the present application.

[0029] Figure 3 This is a structural diagram highlighting the fixing plate of Example 1 of the present application.

[0030] Figure 4 yes Figure 3 Enlarged view of point A in the middle.

[0031] Figure 5 This is a cross-sectional view of Example 2 of the present application.

[0032] Figure 6 yes Figure 5 Enlarged view of point B in the middle.

[0033] Explanation of the accompanying reference numerals: 1. moving plate; 11. reflecting part; 12. connecting plate; 13. rotating plate; 2. electrode plate; 3. metal plating; 4. reflective photoelectric switch; 5. light-absorbing layer; 6. shell; 7. driving source; 8. movable part; 81. driving end; 82. triggering end; 83. driving section; 84. triggering section; 9. button; 100. driving assembly; 101. magnet; 102. electromagnet; 110. limiting plate; 120. fixing plate; 130. rotating rod; 140. mounting plate; 150. supporting rod. DETAILED DESCRIPTION

[0034] The following is combined with Figure 1-6 This application is described in further detail.

[0035] Example 1: Example 1 of the present application discloses a non-contact electrical testing device for AC and DC overhead lines. Figure 1 and Figure 2 The non-contact electrical testing device for hybrid AC / DC overhead lines includes a housing 6, within which is fixedly mounted a drive source 7, which is a drive motor. A rotor 1 is fixedly mounted on the drive source 7, and the drive source 7 drives the rotor 1 to rotate. An electrode plate 2 is fixedly mounted within the housing 6, and the rotor 1 and the electrode plate 2 are arranged along the extension direction of the rotation axis of the rotor 1.

[0036] Reference Figure 3 and Figure 4 A fixed plate 120 is fixedly mounted in the housing 6, and the electrode plate 2 is fixedly mounted on the fixed plate 120. Four electrode plates 2 are provided, and the four electrode plates 2 form a ring. The surfaces of the electrode plates 2 close to and away from the moving piece 1 are both provided with a metal coating 3.

[0037] Reference Figure 2 A rotating rod 130 is fixedly mounted on the drive shaft of the driving source 7. The movable plate 1 includes a connecting plate 12 and two rotating plates 13. The connecting plate 12 is annular and is sleeved and fixed on the rotating rod 130. The rotating plates 13 are integrally formed on the outer circumference of the connecting plate 12, and the two rotating plates 13 are evenly distributed along the outer circumference of the connecting plate 12.

[0038] Reference Figure 2 and Figure 3 The movable plate 1 includes a reflective portion 11, which is located on a connecting plate 12. A light-absorbing layer 5 is provided on the surface of the connecting plate 12 near the electrode plate 2. The reflective portion 11 and the light-absorbing layer 5 are spaced apart and distributed on the connecting plate 12 around the rotating rod 130. A reflective photoelectric switch 4 is fixedly mounted on the surface of the fixed plate 120 near the movable plate 1. The reflective photoelectric switch 4 is located within the inner ring of the electrode plate 2. The projection of the rotational range of the reflective portion 11 and the light-absorbing layer 5 in the extension direction of the rotating rod 130 completely covers the reflective photoelectric switch 4.

[0039] In other embodiments, the light absorbing layer 5 may not be provided, and the reflective portion 11 may be located on the rotating piece 13. The reflective photoelectric switch 4 is disposed outside the outer ring of the electrode plate 2 so that the projection of the rotation range of the rotating piece 13 in the extension direction of the rotating rod 130 completely covers the reflective photoelectric switch 4.

[0040] Example 1 of the present application further discloses an electrical testing method, which uses the above-mentioned non-contact electrical testing device for AC and DC overhead lines, including the following steps: S1. Measuring the DC electric field: As the rotor 1 rotates, the reflective photoelectric switch 4 continuously emits light. When the reflective portion 11 rotates above the reflective photoelectric switch 4, the reflective portion 11 reflects the light emitted by the reflective photoelectric switch 4 back to the reflective photoelectric switch 4. The reflective photoelectric switch 4 detects the light, thereby generating a pulse signal, which is used to determine the polarity of the electric field. As the rotor 1 rotates, a potential difference is generated between the rotor 1 and the metal coating 3 on the surface of the electrode plate 2 closest to the rotor 1. This potential difference is measured and calculated to obtain the DC electric field. S2. Measure the AC electric field: The rotor 1 is fixed, and a potential difference is formed between the metal coatings 3 on the two surfaces of the electrode plate 2 close to and away from the rotor 1. The potential difference is measured and calculated to obtain the AC electric field.

[0041] The implementation principle of a non-contact electrical testing device for mixed AC and DC overhead lines in Example 1 of the present application is as follows: when the DC electric field is to be measured, the driving source 7 drives the movable plate 1 to rotate, the movable plate 1 cuts the electromagnetic field, and a potential difference is formed between the movable plate 1 and the metal coating 3 on the surface of the electrode plate 2 close to the movable plate 1. The potential difference is measured and calculated to obtain the DC electric field; when the AC electric field is to be measured, the driving source 7 stops working, the movable plate 1 is fixed and does not rotate, the two metal coatings 3 on the electrode plate 2 cut the electromagnetic field, and a potential difference is formed between the two metal coatings 3. The potential difference is measured and calculated to obtain the AC electric field.

[0042] Example 2: Reference Figure 5, which is different from Example 1, in this embodiment, a movable part 8 is rotatably mounted on the housing 6, and a driving component 100 is provided on both the movable part 8 and the moving plate 1, and the driving component 100 drives the movable part 8 to rotate.

[0043] Reference Figure 5 and Figure 6 A mounting plate 140 is fixedly mounted on the inner wall of the housing 6. The mounting plate 140 is located on the side of the moving piece 1 away from the electrode plate 2. A button 9 is fixedly mounted on the surface of the mounting plate 140 close to the moving piece 1. When the button 9 is triggered, a reminder is sent to the user.

[0044] Reference Figure 6 A support rod 150 is fixedly mounted on the fixed plate 120 , and the movable part 8 is rotatably mounted on the support rod 150 . The movable part 8 is located between the movable plate 1 and the mounting plate 140 , and the rotation axis of the movable part 8 is perpendicular to the rotation axis of the movable plate 1 .

[0045] Reference Figure 5 and Figure 6 The driving component 100 includes a magnet 101 and an electromagnet 102. When the electromagnet 102 is energized and working, the magnet 101 and the electromagnet 102 repel each other. The magnet 101 is fixedly mounted on the surface of the moving plate 1 away from the electrode plate 2. The movable part 8 includes a driving end 81 and a triggering end 82. The electromagnet 102 is fixedly mounted on the surface of the triggering end 82 close to the moving plate 1, and the electromagnet 102 is driven by the driving source 7. The triggering end 82 is used to trigger the button 9. The movable part 8 is a homogeneous rod. The driving section 83 is between the rotation axis of the movable part 8 and the driving end 81, and the triggering section 84 is between the rotation axis of the movable part 8 and the triggering end 82. The length of the driving section 83 is greater than the length of the triggering section 84.

[0046] Reference Figure 5 and Figure 6 A limit plate 110 is fixedly mounted on the inner wall of the housing 6 and is located on the side of the movable member 8 away from the mounting plate 140. When the driving assembly 100 drives the movable member 8 to rotate away from the button 9, the limit plate 110 contacts the trigger end 82, limiting the rotation angle of the movable member 8.

[0047] The operating principle of the non-contact electrical testing device for a hybrid AC / DC overhead line in Example 2 of the present application is as follows: a drive source 7 drives the rotor 1 to rotate, which simultaneously activates the electromagnet 102. The magnet 101 and the electromagnet 102 repel each other, driving the movable member 8 to rotate until the trigger end 82 is away from the button 9. If the drive source 7 fails or is damaged and cannot drive the rotor 1 to rotate, the drive assembly 100 will not operate, and the movable member 8 will rotate under the action of gravity until the trigger end 82 triggers the button 9, alerting the user to the failure of the drive source 7.

[0048] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A non-contact electrical testing device for AC and DC overhead lines, characterized by: The invention comprises a moving piece (1) and an electrode plate (2), wherein the moving piece (1) is rotatably arranged, the moving piece (1) and the electrode plate (2) are arranged along the extension direction of the rotation axis of the moving piece (1), and the surface of the electrode plate (2) close to and away from the moving piece (1) is provided with a metal coating (3).

2. The non-contact electrical testing device for AC and DC overhead lines according to claim 1, characterized in that: It also includes a reflective photoelectric switch (4), wherein the movable plate (1) includes a reflective portion (11), and when the reflective portion (11) rotates above the reflective photoelectric switch (4), the reflective portion (11) reflects light emitted by the reflective photoelectric switch (4) back to the reflective photoelectric switch (4).

3. The non-contact electrical testing device for AC / DC overhead lines according to claim 2, characterized in that: The movable plate (1) includes a connecting plate (12) and a plurality of rotating plates (13), wherein the rotating plates (13) are fixedly connected to the connecting plate (12), the reflecting portion (11) is located on the connecting plate (12), and a light absorbing layer (5) is provided on the surface of the connecting plate (12) close to the electrode plate (2), wherein the light absorbing layer (5) is used to absorb light emitted by the reflective photoelectric switch (4), the reflecting portion (11) and the light absorbing layer (5) are spaced apart around the rotation axis of the movable plate (1), and the projection of the rotation range of the reflecting portion (11) and the light absorbing layer (5) in the extension direction of the rotation axis of the movable plate (1) completely covers the reflective photoelectric switch (4).

4. The non-contact electrical testing device for AC and DC overhead lines according to claim 3, characterized in that: The plurality of rotating pieces (13) are arranged along the circumference of the connecting plate (12).

5. The non-contact electrical testing device for AC / DC overhead lines according to claim 1, characterized in that: The invention also includes a shell (6), wherein the movable plate (1) and the electrode plate (2) are both arranged on the shell (6), a driving source (7) is provided in the shell (6), and the driving source (7) is used to drive the movable plate (1) to rotate, a movable part (8) is movably provided on the shell (6), a button (9) is provided on the shell (6), and the movable part (8) is used to movably trigger the button (9), and a driving component (100) is provided on both the movable plate (1) and the movable part (8), and when the movable plate (1) rotates, the driving component (100) is used to drive the movable part (8) to move away from the button (9).

6. The non-contact electrical testing device for AC and DC overhead lines according to claim 5, characterized in that: The driving assembly (100) includes a magnet (101) provided on the moving plate (1) and an electromagnet (102) provided on the movable part (8). The driving source (7) is also used to drive the electromagnet (102) to work. The electromagnet (102) and the magnet (101) repel each other.

7. The non-contact electrical testing device for AC and DC overhead lines according to claim 5, characterized in that: The movable member (8) is rotatably arranged on the housing (6), the rotation axis of the movable member (8) is perpendicular to the rotation axis of the movable plate (1), the movable member (8) is located on the side of the movable plate (1) away from the electrode plate (2), the movable member (8) includes a driving end (81) and a triggering end (82), the driving assembly (100) on the movable member (8) is located on the driving end (81), the triggering end (82) is used to trigger the button (9), the driving section (83) is between the rotation axis of the movable member (8) and the driving end (81), the triggering section (84) is between the rotation axis of the movable member (8) and the triggering end (82), and the mass of the driving section (83) is greater than the mass of the triggering section (84).

8. The non-contact electrical testing device for AC and DC overhead lines according to claim 7, characterized in that: A limit plate (110) is provided on the housing (6), and the limit plate (110) is located on a side of the movable part (8) away from the button (9), and the limit plate (110) is used to contact the trigger end (82).

9. A method for testing electricity, characterized by: The non-contact electrical testing device for AC and DC overhead lines according to claim 1 comprises the following steps: S1. Measuring the DC electric field: the moving piece (1) rotates, and a potential difference is formed between the moving piece (1) and the metal coating (3) on the surface of the electrode plate (2) close to the moving piece (1). The potential difference is measured and calculated to obtain the DC electric field; S2. Measuring the AC electric field: the moving piece (1) is fixed, and a potential difference is formed between the metal coatings (3) on the two surfaces of the electrode plate (2) close to and away from the moving piece (1). The potential difference is measured and calculated to obtain the AC electric field.

10. The electrical testing method according to claim 9, characterized in that: The electrode plate (2) is provided with a reflective photoelectric switch (4), the movable plate (1) includes a reflective portion (11), and the step S1 further includes a step of determining the polarity of the electric field. When the movable plate (1) rotates, the reflective photoelectric switch (4) continuously emits light. When the reflective portion (11) rotates above the reflective photoelectric switch (4), the reflective portion (11) reflects the light emitted by the reflective photoelectric switch (4) back to the reflective photoelectric switch (4), and the reflective photoelectric switch (4) detects the light.

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