A non-contact type electricity testing device and method for AC and DC overhead line hybrid

Abstract

The application relates to the technical field of an electricity testing device, in particular to a non-contact electricity testing device for AC and DC overhead lines and an electricity testing method, which comprises a moving piece and an electrode plate, the moving piece is rotationally arranged, the moving piece and the electrode plate are arranged along the extension direction of the rotation axis of the moving piece, and a metal plating layer is arranged on the surface close to and away from the moving piece. According to the application, the moving piece and the electrode plate are arranged along the rotation axis, the double-sided metal plating layer structure of the electrode plate is combined, the AC and DC electric fields are detected by the device, the electricity testing device is integrated, and the operation efficiency is improved.

Description

TECHNICAL FIELD

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

[0002] Before installing a grounding wire in a power-off line work site, electricity needs to be tested first. After confirming that there is no voltage on the line, the next operation can be performed. In order to improve safety and operational efficiency, existing technologies often use unmanned aerial vehicles to carry non-contact electricity testing devices for electricity testing.

[0003] The existing non-contact electricity testing technology uses different measurement methods for AC and DC. AC often uses alternating electric field measurement sensors for electric field measurement, while DC often uses atmospheric electric field meters to measure DC electric field. The technical routes of the two are different, and the operation and analysis processes also differ greatly. For example, the atmospheric electric field meter includes a rotating moving piece and a fixed piece. The fixed piece is a metal plating layer. The potential difference between the moving piece and the fixed piece is formed by the rotation of the moving piece to measure the DC electric field. The atmospheric electric field meter cannot measure the AC electric field.

[0004] However, in actual lines, there are mixed distribution of AC and DC lines. When non-contact electricity testing is performed by an unmanned aerial vehicle, different electricity testing devices need to be switched to confirm the charging state of the line, which is troublesome and reduces work efficiency. SUMMARY

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

[0006] The non-contact electricity testing device for AC and DC overhead lines and the electricity testing method provided by the present application adopt the following technical solutions:

[0007] A non-contact electricity testing device for AC and DC overhead lines includes a moving piece and an electrode plate. The moving piece is rotatably arranged. The moving piece and the electrode plate are arranged along the extension direction of the rotation axis of the moving piece. The electrode plate is provided with a metal plating layer on the surface close to and away from the moving piece.

[0008] By adopting the above technical solutions, by arranging the moving piece and the electrode plate along the rotation axis direction, and combining the electrode plate double-sided metal plating layer structure, AC and DC electric fields are detected by one device. When the moving piece rotates, a potential difference is formed between the moving piece and the metal plating layer on the surface of the electrode plate, which can be used for DC electric field measurement. When the moving piece is fixed, a potential difference is formed between the metal plating layers on the two surfaces of the electrode plate, which can be used for AC electric field measurement. The integration of the electricity testing device is realized, and the operational efficiency is improved.

[0009] Optionally, it also includes a reflective photoelectric switch, wherein the moving piece includes a reflective part, and when the reflective part rotates to above the reflective photoelectric switch, the reflective part reflects the light emitted by the reflective photoelectric switch back to the reflective photoelectric switch.

[0010] By adopting the above technical solution, the existing technology uses a rotating blade and a fixed photoelectric switch. The blade is located between the photoelectric switches. The rotation of the blade causes the photoelectric switch to generate a periodic pulse signal to determine the polarity of the electric field. However, this arrangement results in a relatively large size of the voltage detector, and the blade occupies a certain amount of space. This application eliminates the blade and photoelectric switch, and introduces a reflective photoelectric switch and a reflective part on the moving plate. By rotating the moving plate, the reflective part blocks the light and reflects the light onto the reflective photoelectric switch, allowing the reflective photoelectric switch to generate a periodic pulse signal to determine the polarity of the electric field. Compared with the structure of the existing technology, the overall size of the voltage detector is reduced, significantly reducing the space occupied by the voltage detector and reducing the weight of the voltage detector, which is convenient for use by UAVs.

[0011] Optionally, the moving plate includes a connecting plate and a plurality of rotating plates. The rotating plates are fixedly connected to the connecting plate. The reflective part is located on the connecting plate. A light-absorbing layer is provided on the surface of the connecting plate near the electrode plate. The light-absorbing layer is used to absorb the light emitted by the reflective photoelectric switch. The reflective part and the light-absorbing layer are distributed at intervals around the rotation axis of the moving plate, and the projection of the rotation range of the reflective part and the light-absorbing layer in the extension direction of the rotation axis of the moving plate completely covers the reflective photoelectric switch.

[0012] By adopting the above technical solution, through the structural design of the connecting plate and multiple rotating plates, combined with the spaced distribution of the reflective part and the light-absorbing layer, it is ensured that the light from the reflective photoelectric switch is effectively absorbed or reflected when the moving plates rotate, avoiding optical signal interference. The projection of the light-absorbing layer and the reflective part covers the photoelectric switch, further optimizing the sensitivity and anti-interference capability of signal detection, reducing the impact of sunlight on detection accuracy during the day, and allowing the reflective photoelectric switch to adapt to different lighting environments such as day and night, thus improving the application scenarios of the equipment.

[0013] Optionally, the plurality of the rotating plates are arranged circumferentially along the connecting plate.

[0014] By adopting the above technical solution, the design of arranging the rotating plates around the circumference of the connecting plate enhances the balance and stability of the rotating plates, reduces the impact of mechanical vibration on potential difference measurement, thereby improving the accuracy of AC and DC electric field measurement, and allowing the overall volume of the connecting plate to be reduced, thus lowering production costs.

[0015] Optionally, the device further comprises a shell, the moving piece and the electrode plate are arranged on the shell, a driving source is arranged in the shell, the driving source is used to drive the moving piece to rotate, a movable part is movably arranged on the shell, a button is arranged on the shell, the movable part is used to move the button, the moving piece and the movable part are provided with driving assemblies, when the moving piece rotates, the driving assemblies are used to drive the movable part to move away from the button.

[0016] By using the above technical scheme, when the driving source works normally, the driving source drives the moving piece to rotate, and the driving assemblies drive the movable part to move away from the button; when the driving source is damaged, the moving piece stops rotating, at this time, the driving assemblies do not work, and the movable part moves to trigger the button, reminding the user that the driving source is malfunctioning. If the electric field cannot be measured, the user can also determine the source of the fault through this way to exclude other causes of failure.

[0017] Optionally, the driving assemblies comprise a magnet arranged on the moving piece and an electromagnet arranged on the movable part, the driving source is further used to drive the electromagnet to work, and the electromagnet repels the magnet.

[0018] By using the above technical scheme, the driving mode of repelling the magnet and the electromagnet is adopted, the movable part is driven to move by non-contact electromagnetic force, mechanical wear is reduced, and the service life of the device is prolonged.

[0019] 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 moving piece, the movable part is located on the side of the moving piece away from the electrode plate, the movable part comprises a driving end and a triggering end, the driving assemblies on the movable part are located on the driving end, the triggering end is used to trigger the button, the rotation axis of the movable part and the driving end form a driving section, and the rotation axis of the movable part and the triggering end form a triggering section, the mass of the driving section is greater than the mass of the triggering section.

[0020] By using the above technical scheme, the rotation axis of the movable part is perpendicular to the moving piece, and the mass of the driving section is greater than the mass of the triggering section, so that the movable part is automatically reset by gravity or inertia. This design simplifies the complexity of the triggering mechanism, improves the response speed and motion consistency of the button triggering.

[0021] Optionally, a limiting plate is arranged on the shell, the limiting plate is located on the side of the movable part away from the button, and the limiting plate is used to abut against the triggering end.

[0022] By using the above technical scheme, on the basis of the button preliminarily limiting the movement range of the triggering end, the limiting plate abuts against the movable part to limit the movement range of the triggering end, so as to ensure that the movable part can be reset, and the mechanical stability and operation reliability of the device are enhanced.

[0023] A method for detecting electricity, using a non-contact electricity detection device for AC and DC overhead lines, comprising the following steps:

[0024] S1, measuring the DC electric field: the moving piece rotates, the electrode plate forms a potential difference between the metal plating on the surface close to the moving piece, the potential difference is measured and calculated to obtain the DC electric field;

[0025] S2, measuring the AC electric field: the moving piece is fixed, the electrode plate forms a potential difference between the metal plating on the two surfaces close to and away from the moving piece, the potential difference is measured and calculated to obtain the AC electric field.

[0026] By adopting the above technical scheme, through the two modes of rotating and fixing the moving piece, the potential difference of the metal plating on one side and both sides of the electrode plate is utilized respectively, and the time-sharing measurement of AC and DC electric fields is realized. This method can complete the electricity detection of mixed lines without switching equipment, significantly improves the electricity detection efficiency, and reduces the operation complexity.

[0027] Optionally, the electrode plate is provided with a reflective photoelectric switch, the moving piece includes a reflecting part, and the S1 step further includes a step of judging the polarity of the electric field. The moving piece rotates, the reflective photoelectric switch continuously emits light, and when the reflecting part rotates to 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.

[0028] By adopting the above technical scheme, the reflective photoelectric switch and the reflecting part of the moving piece are combined to detect the linkage, and the polarity of the electric field is judged synchronously in the measurement of the DC electric field.

[0029] In summary, the present application includes at least one of the following beneficial technical effects:

[0030] 1. Through the design of arranging the moving piece and the electrode plate along the rotation axis direction, combined with the double-sided metal plating structure of the electrode plate, the AC and DC electric fields are detected by one device, the integration of the electricity detection device is realized, and the operation efficiency is improved;

[0031] 2. The small blade and the photoelectric switch are omitted, the reflective photoelectric switch and the reflecting part on the moving piece are introduced, the overall volume of the electricity detection device is reduced, the space occupation of the electricity detection device is greatly reduced, and the weight of the electricity detection device is reduced, so as to facilitate the use of the unmanned aerial vehicle;

[0032] 3. The sensitivity and anti-interference ability of signal detection are optimized, the influence of sunlight on detection accuracy during the day is reduced, the reflective photoelectric switch can adapt to different light environments such as day and night, and the application scene of the equipment is improved. BRIEF DESCRIPTION OF DRAWINGS

[0033] Figure 1 is a structural schematic diagram of embodiment 1 of the present application.

[0034] Figure 2 is a structural schematic view of the hidden shell of the embodiment 1 of the present application.

[0035] Figure 3 is a structural schematic view of the highlight fixed plate of the embodiment 1 of the present application.

[0036] Figure 4 is Figure 3 the enlarged view at A in FIG. 1.

[0037] Figure 5 is a sectional view of the embodiment 2 of the present application.

[0038] Figure 6 is Figure 5 the enlarged view at B in FIG. 1.

[0039] BRIEF DESCRIPTION OF THE DRAWINGS 1, moving piece; 11, reflecting part; 12, connecting plate; 13, rotating piece; 2, electrode plate; 3, metal plating layer; 4, reflecting photoelectric switch; 5, light absorption layer; 6, shell; 7, driving source; 8, movable piece; 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, fixed plate; 130, rotating rod; 140, mounting plate; 150, supporting rod. DETAILED DESCRIPTION

[0040] The following will be described in detail in combination with the accompanying drawings. Figures 1-6 The present application will be further described in detail.

[0041] Embodiment 1:

[0042] The embodiment 1 of the present application discloses a non-contact electricity testing device for AC and DC overhead line. Referring to Figure 1 and Figure 2 The non-contact electricity testing device for AC and DC overhead line comprises a shell 6, a driving source 7 is fixedly installed in the shell 6, the driving source 7 is a driving motor, a moving piece 1 is fixedly installed on the driving source 7, and the driving source 7 drives the moving piece 1 to rotate. An electrode plate 2 is fixedly installed in the shell 6, and the moving piece 1 and the electrode plate 2 are arranged along the extension direction of the rotation axis of the moving piece 1.

[0043] Referring to Figure 3 and Figure 4 A fixed plate 120 is fixedly installed in the shell 6, and the electrode plate 2 is fixedly installed on the fixed plate 120. The electrode plate 2 is provided with four, and the four electrode plates 2 are enclosed into a ring shape. The surface of the electrode plate 2 close to and away from the moving piece 1 is provided with a metal plating layer 3.

[0044] Referring to Figure 2The driving shaft of the driving source 7 is fixedly installed with a rotating rod 130. The moving sheet 1 comprises a connecting plate 12 and two rotating sheets 13. The connecting plate 12 is annular, and is fixedly sleeved on the rotating rod 130. The rotating sheets 13 are integrally formed on the outer circumferential surface of the connecting plate 12, and are evenly distributed along the outer circumferential surface of the connecting plate 12.

[0045] With reference to Figure 2 With Figure 3 The moving sheet 1 comprises a reflecting part 11, which is located on the connecting plate 12. The connecting plate 12 is provided with a light-absorbing layer 5 on the surface close to the electrode plate 2. The reflecting part 11 and the light-absorbing layer 5 are spacedly distributed on the connecting plate 12 around the rotating rod 130. The fixed plate 120 is fixedly installed with a reflecting photoelectric switch 4 on the surface close to the moving sheet 1. The reflecting photoelectric switch 4 is located in the inner ring of the electrode plate 2. The projection of the rotating range of the reflecting part 11 and the light-absorbing layer 5 in the extension direction of the rotating rod 130 completely covers the reflecting photoelectric switch 4.

[0046] In other embodiments, the light-absorbing layer 5 can not be provided, and the reflecting part 11 is located on the rotating sheet 13. The reflecting photoelectric switch 4 is arranged outside the outer ring of the electrode plate 2, so that the projection of the rotating range of the rotating sheet 13 in the extension direction of the rotating rod 130 completely covers the reflecting photoelectric switch 4.

[0047] The embodiment 1 of the application further discloses a method for testing electricity, which adopts the above-mentioned non-contact electricity testing device for AC-DC overhead line mixed use, and comprises the following steps:

[0048] S1, measuring a DC electric field: the moving sheet 1 rotates, and the reflecting photoelectric switch 4 continuously emits light. When the reflecting part 11 rotates to above the reflecting photoelectric switch 4, the reflecting part 11 reflects the light emitted by the reflecting photoelectric switch 4 back to the reflecting photoelectric switch 4, and the reflecting photoelectric switch 4 detects the light, thereby forming a pulse signal, so as to judge the polarity of the electric field. When the moving sheet 1 rotates, an electric potential difference is formed between the moving sheet 1 and the metal plating layer 3 on the surface of the electrode plate 2 close to the moving sheet 1. The electric potential difference is measured and calculated to obtain the DC electric field.

[0049] S2, measuring an AC electric field: the moving sheet 1 is fixed, and an electric potential difference is formed between the metal plating layers 3 on the two surfaces of the electrode plate 2 close to and far from the moving sheet 1. The electric potential difference is measured and calculated to obtain the AC electric field.

[0050] The implementation principle of the non-contact electricity testing device for AC and DC overhead line mixed use in the embodiment 1 of the application is as follows: when the DC electric field is measured, the driving source 7 drives the moving piece 1 to rotate, the moving piece 1 cuts the electromagnetic field, and the potential difference is formed between the moving piece 1 and the metal plating layer 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; when the AC electric field is measured, the driving source 7 stops working, the moving piece 1 is fixed and does not rotate, the two metal plating layers 3 on the electrode plate 2 cut the electromagnetic field, the potential difference is formed between the two metal plating layers 3, and the potential difference is measured and calculated to obtain the AC electric field.

[0051] Embodiment 2

[0052] With reference to Figure 5 Different from the embodiment 1, the movable piece 8 is rotatably installed on the shell 6 in the embodiment, the driving assembly 100 is arranged on the movable piece 8 and the moving piece 1, and the driving assembly 100 drives the movable piece 8 to rotate.

[0053] With reference to Figure 5 And Figure 6 The mounting plate 140 is fixedly installed on the inner wall of the shell 6, the mounting plate 140 is located on the side of the moving piece 1 away from the electrode plate 2, and the button 9 is fixedly installed on the surface of the mounting plate 140 close to the moving piece 1. When the button 9 is triggered, the user is sent a reminder.

[0054] With reference to Figure 6 The supporting rod 150 is fixedly installed on the fixed plate 120, the movable piece 8 is rotatably installed on the supporting rod 150, the movable piece 8 is located between the moving piece 1 and the mounting plate 140, and the rotation axis of the movable piece 8 is perpendicular to the rotation axis of the moving piece 1.

[0055] With reference to Figure 5 And Figure 6 The driving assembly 100 includes the magnet 101 and the electromagnet 102, the magnet 101 and the electromagnet 102 repel each other when the electromagnet 102 is electrified and works. The magnet 101 is fixedly installed on the surface of the moving piece 1 away from the electrode plate 2. The movable piece 8 includes the driving end 81 and the triggering end 82, the electromagnet 102 is fixedly installed on the surface of the triggering end 82 close to the moving piece 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 piece 8 is a homogeneous rod, the rotation axis of the movable piece 8 and the driving end 81 form the driving section 83, the rotation axis of the movable piece 8 and the triggering end 82 form the triggering section 84, and the length of the driving section 83 is greater than the length of the triggering section 84.

[0056] With reference to Figure 5 And Figure 6The inner wall of the shell 6 is fixedly provided with a limiting plate 110, which is located on the side of the movable element 8 away from the mounting plate 140. When the driving assembly 100 drives the movable element 8 to rotate away from the button 9, the limiting plate 110 abuts against the triggering end 82 to limit the rotation angle of the movable element 8.

[0057] The implementation principle of the embodiment 2 of the application is that the driving source 7 drives the driving piece 1 to rotate, and simultaneously drives the electromagnet 102 to work. The magnet 101 repels the electromagnet 102, and the movable element 8 is driven to rotate away from the button 9. If the driving source 7 fails or is damaged, the driving piece 1 cannot be driven to rotate, the driving assembly 100 does not work, and the movable element 8 rotates under the action of gravity until the triggering end 82 triggers the button 9, reminding the user that the driving source 7 is faulty.

[0058] The above are the preferred embodiments of the application, and are not intended to limit the protection scope of the application. Therefore, any equivalent changes made according to the structure, shape and principle of the application should be covered within the protection scope of the application.

Claims

1. A non-contact voltage testing device for AC / DC overhead lines, characterized in that: The device includes a movable plate (1) and an electrode plate (2). The movable plate (1) is rotatably mounted, and the movable plate (1) and the electrode plate (2) are arranged along the extension direction of the rotation axis of the movable plate (1). The electrode plate (2) has a metal plating layer (3) on both the surface near and away from the movable plate (1). It also includes a reflective photoelectric switch (4). The movable plate (1) includes a reflective part (11). When the reflective part (11) rotates above the reflective photoelectric switch (4), the reflective part (11) reflects the light emitted by the reflective photoelectric switch (4) back to the reflective photoelectric switch (4). The movable plate (1) includes a connecting plate (…). 12) and multiple rotating plates (13), the rotating plates (13) are fixedly connected to the connecting plate (12), the reflective part (11) is located on the connecting plate (12), the connecting plate (12) has a light-absorbing layer (5) on the surface near the electrode plate (2), the light-absorbing layer (5) is used to absorb the light emitted by the reflective photoelectric switch (4), the reflective part (11) and the light-absorbing layer (5) are distributed at intervals around the rotation axis of the moving plate (1), and the projection of the rotation range of the reflective part (11) and the light-absorbing layer (5) in the extension direction of the rotation axis of the moving plate (1) completely covers the reflective photoelectric switch (4). It also includes a housing (6), the movable piece (1) and the electrode plate (2) are both disposed on the housing (6), the housing (6) is provided with a driving source (7), the driving source (7) is used to drive the movable piece (1) to rotate, the housing (6) is movably provided with a movable part (8), the housing (6) is provided with a button (9), the movable part (8) is used to activate the button (9), the movable piece (1) and the movable part (8) are both provided with a driving assembly (100), when the movable piece (1) rotates, the driving assembly (100) is used to drive the movable part (8) to move away from the button (9); The movable part (8) is rotatably mounted on the housing (6). The rotation axis of the movable part (8) is perpendicular to the rotation axis of the moving plate (1). The movable part (8) is located on the side of the moving plate (1) away from the electrode plate (2). The movable part (8) includes a driving end (81) and a trigger end (82). The driving component (100) on the movable part (8) is located on the driving end (81). The trigger end (82) is used to trigger the button (9). The rotation axis of the movable part (8) and the driving end (81) form a driving segment (83). The rotation axis of the movable part (8) and the trigger end (82) form a trigger segment (84). The mass of the driving segment (83) is greater than the mass of the trigger segment (84). The housing (6) is provided with a limiting plate (110), which is located on the side of the movable part (8) away from the button (9) and is used to abut against the trigger end (82). When measuring the DC electric field, the moving plate (1) rotates, and a potential difference is formed between the moving plate (1) and the metal plating layer (3) on the surface of the electrode plate (2) close to the moving plate (1). The potential difference is measured and calculated to obtain the DC electric field. When measuring the alternating electric field, the moving plate (1) is fixed, and a potential difference is formed between the metal plating (3) on the two surfaces of the electrode plate (2) that are close to and far from the moving plate (1). The potential difference is measured and calculated to obtain the alternating electric field.

2. The non-contact voltage testing device for AC / DC overhead lines according to claim 1, characterized in that: Multiple rotating plates (13) are arranged circumferentially along the connecting plate (12).

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

4. A method for detecting electricity, characterized in that: The non-contact voltage testing device for AC / DC overhead lines as described in claim 1 includes the following steps: S1. Measure the DC electric field: The moving plate (1) rotates, and a potential difference is formed between the moving plate (1) and the metal plating layer (3) on the surface of the electrode plate (2) close to the moving plate (1). The potential difference is measured and calculated to obtain the DC electric field. S2. Measuring the AC electric field: The moving plate (1) is fixed, and a potential difference is formed between the metal plating (3) on the two surfaces of the electrode plate (2) that are close to and far from the moving plate (1). The potential difference is measured and calculated to obtain the AC electric field.

5. The voltage testing method according to claim 4, characterized in that: The electrode plate (2) is provided with a reflective photoelectric switch (4). The moving plate (1) includes a reflective part (11). The S1 step also includes a step of determining the polarity of the electric field. The moving plate (1) rotates and the reflective photoelectric switch (4) continuously emits light. When the reflective part (11) rotates to above the reflective photoelectric switch (4), the reflective part (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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