Insulator detection system capable of shielding and resisting electromagnetic field interference

Abstract

The invention discloses an insulator detection system capable of shielding and resisting electromagnetic field interference. The insulator detection system comprises a detection plate and an insulation fixing plate which are oppositely arranged, the detection plate is connected with the insulating fixed plate through a lifting mechanism; a probe set, a magnetic field detection probe and a filter assembly are arranged on the side, away from the insulation fixing plate, of the detection plate, a shielding cover is arranged on the periphery of the detection plate, the probe set is used for collecting insulator test data, the magnetic field detection probe is used for detecting the size of a magnetic field generated by a to-be-detected product, and the filter assembly is used for filtering the to-be-detected product. The filter assembly is used for shielding a magnetic field; a receiving device and a main controller are arranged on the side, away from the detection plate, of the insulation fixing plate, and the receiving device is in optical communication connection with the probe set and used for receiving data transmitted back by the probe set. And the main controller is electrically connected with the lifting mechanism, the receiving device, the magnetic field detection probe and the filter assembly. The magnetic field shielding effect can be improved, complete magnetic field shielding is achieved, and the detection accuracy of the insulator is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of power grid detection, and in particular to an insulator detection system with shielding and anti-electromagnetic field interference. Background Art

[0002] Insulators are crucial components of overhead transmission lines, effectively isolating live conductors from the ground, maintaining their respective potentials. During line operation, insulators are subjected to high voltages, mechanical loads, and environmental fluctuations, causing them to gradually age and degrade, threatening the safe operation of the line. Because insulator degradation poses a serious threat to the safe and stable operation of power systems, regular maintenance is essential.

[0003] During insulator maintenance, power outages can help prevent electromagnetic interference from affecting maintenance equipment. However, overhauling tens of thousands of insulators is a massive undertaking, making traditional power outages unsuitable. If live maintenance is used, the insulators are exposed to strong electromagnetic forces, and the performance of electronic equipment in this environment must be considered.

[0004] The electromagnetic shielding system of existing drones is designed to electromagnetically shield its internal electronic components. For example, patent application No. 201721054669.4 discloses an insulator detection system with shielding and anti-electromagnetic field interference, which includes: a probe for collecting insulator test data and a receiving device for receiving probe return data; the probe is connected to the receiving device and performs electromagnetic interference shielding, and the probe is provided with an image sensor, which collects spark image signal data and transmits the spark image signal data to the receiving device; the probe also includes an observation chamber, a discharge needle, a turntable, a gear and a probe; the probe is on the turntable; the turntable is connected to the gear, and the gear is connected to the transmission device. Under the transmission action of the transmission device, the turntable and the probe provided on the turntable can rotate 360 ​​degrees, the discharge needle is in the observation chamber and is electrically connected to the probe needle, and the probe needle can move forward or backward.

[0005] The above structure can ensure that signal data transmission is not interfered with in high voltage and strong electric field environments, thereby ensuring the normal progress of UAV flight tests. However, this structure only solves the problem of how to achieve signal data transmission without interference in high voltage and strong electric field environments. However, for different detection environments, it does not take into account that the different detection environments have different magnetic field sizes. Therefore, the relative effect of using the same fixed magnetic field interference for magnetic field shielding is poor, and it may not be possible to completely shield the magnetic field, which will ultimately affect insulator detection. Therefore, it needs to be improved. Summary of the Invention

[0006] The purpose of the present invention is to provide an insulator detection system with shielding and resistance to electromagnetic field interference, so as to solve the problem raised in the above background technology that the existing insulator detection generally uses the same fixed magnetic field interference to perform magnetic field shielding, which has relatively poor effect and may not be able to completely shield the magnetic field, thereby ultimately affecting the insulator detection.

[0007] The present invention is achieved through the following technical solutions: The present invention provides an insulator detection system with shielding and resistance to electromagnetic field interference, comprising a detection plate and an insulating fixed plate arranged relatively to each other; the detection plate is connected to the insulating fixed plate via a lifting mechanism; the detection plate is provided with a probe group, a magnetic field detection probe and a filter assembly on the side facing away from the insulating fixed plate, and a shielding cover is provided around the detection plate, the probe group is used to collect insulator test data, the magnetic field detection probe is used to detect the size of the magnetic field generated by the product to be tested, and the filter assembly is used to shield the magnetic field; the insulating fixed plate is provided with a receiving device and a main controller on the side facing away from the detection plate, the receiving device and the probe group are optically connected to receive data returned by the probe group; the main controller is electrically connected to the lifting mechanism, the receiving device, the magnetic field detection probe and the filter assembly.

[0008] As a preferred solution of the present invention, the filter assembly includes a filter input receiver, a filter output receiver and multiple filters. The filter input receiver is installed at the power input interface, and the filter output receiver is installed at the power output interface. The filters are connected in parallel with each other, and a switching switch electrically connected to the main controller is provided on each filter branch.

[0009] As a preferred solution of the present invention, it also includes a power supply module for providing electric energy to the detection system, the power supply module includes an electric energy generator and an energy accumulator, the electric energy generator is used to generate electric energy, and the energy accumulator is electrically connected to the electric energy generator.

[0010] As a preferred solution of the present invention, the electric energy generator includes a solar panel or a wind generator.

[0011] As a preferred embodiment of the present invention, the lifting mechanism includes a lifting plate and a driving member, the lifting plate is connected to the side of the detection plate facing the insulating fixed plate, a guide rod is provided on the lifting plate, and a guide sleeve is correspondingly provided on the insulating fixed plate, and the driving member is used to drive the guide rod to slide along the guide sleeve to make the detection plate approach or move away from the insulating fixed plate.

[0012] As a preferred solution of the present invention, the shielding cover includes a shielding base net composed of a magnetic field shielding net, and an insulating protective layer is provided on the outer side of the shielding base net.

[0013] As a preferred embodiment of the present invention, a nickel-iron alloy layer is provided on the outer side of the insulating protective layer.

[0014] As a preferred solution of the present invention, the insulating fixing plate is provided with positioning plates at both ends facing the detection plate, and the positioning plates are provided with wire insertion holes. The wire insertion holes are rotatably connected with movable guide wheels that can move along the wires, and a limiting insulating plate is provided in front and behind each movable guide wheel.

[0015] As a preferred solution of the present invention, the main controller detects the magnitude of the magnetic field generated by the product to be tested through a magnetic field detection probe, compares it with the magnetic field shielding threshold in a preset magnetic field interference shielding table, and selects an appropriate filter.

[0016] As a preferred solution of the present invention, a display screen electrically connected to the main controller is provided on the side of the insulating fixing plate facing away from the detection plate.

[0017] Compared with the prior art, the present invention has the following advantages and beneficial effects: In the present invention, a shielding cover, a probe group, a magnetic field detection probe and a filter assembly are arranged on the side of the detection plate away from the insulating fixed plate, and a receiving device and a main controller are arranged on the side of the insulating fixed plate away from the detection plate. The main controller detects the size of the magnetic field generated by the product to be tested through the magnetic field detection probe, and then compares it with the magnetic field shielding threshold in the preset magnetic field interference shielding table, and selects a suitable filter. The present invention can improve the magnetic field shielding effect, achieve complete magnetic field shielding, and ultimately improve the detection accuracy of the insulator. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the exemplary embodiments of the present invention, the following briefly introduces the drawings required for use in the examples. It should be understood that the following drawings only illustrate certain embodiments of the present invention and should not be considered as limiting the scope. A person of ordinary skill in the art can also derive other relevant drawings based on these drawings without inventive effort. In the drawings: Figure 1 It is a structural schematic diagram of the insulator detection system with shielding and anti-electromagnetic field interference in the present invention; Figure 2 A schematic diagram of the connection between the main controller and other electronic devices in the present invention; Figure 3 This is a connection diagram of the filter input receiver in the present invention; Figure 4 This is a connection diagram of the filter output receiver in the present invention; Figure 5 Schematic diagram of the structure of the shielding cover in the present invention; Figure 6is a schematic cross-sectional structural diagram of another shielding cover in the present invention; Figure 7 This is another structural schematic diagram of the insulator detection system with shielding and anti-electromagnetic field interference in the present invention.

[0019] Markings and corresponding parts names in the accompanying drawings: Insulating fixing plate 1, positioning plate 2, wire plug-in hole 3, movable guide wheel 4, limiting insulating plate 5, main controller 6, storage reservoir 7, electric energy generator 8, accumulator 9, lifting cylinder 10, lifting plate 11, detection plate 12, shielding cover 13, filter 14, switching switch 15, receiving device 16, magnetic field detection probe 17, filter input receiver 18, electric input receiving clamp 181, filter input receiving controller 182, communicator 1 183, filter output receiver 19, electric output receiving clamp 191, filter output receiving controller 192, communicator 2 193, U-shaped notch 20, transmission mechanism 21, probe group 22, shielding base net 131, insulating protective layer 132, nickel-iron alloy layer 133, guide sleeve 101, guide rod 102, display screen 103. DETAILED DESCRIPTION

[0020] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with examples and drawings. The exemplary embodiments of the present invention and their descriptions are only used to explain the present invention and are not intended to limit the present invention.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0022] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0023] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0024] In the description of the embodiments of this application, the term "and / or" is simply a description of the association relationship between associated objects, indicating that three relationships can exist. For example, A and / or B can represent the following three situations: A exists, A and B exist at the same time, and B exists. In addition, the character " / " in this document generally indicates that the associated objects are in an "or" relationship.

[0025] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0026] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces), unless otherwise clearly and specifically defined.

[0027] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0028] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0029] Please refer to Figures 1 to 7, an insulator detection system with shielding and anti-electromagnetic field interference provided in an embodiment of the present application includes a detection plate 12 and an insulating fixed plate 1 arranged opposite to each other; the detection plate 12 is connected to the insulating fixed plate 1 through a lifting mechanism; the detection plate 12 is provided with a probe group 22, a magnetic field detection probe 17 and a filter assembly on the side facing away from the insulating fixed plate 1, and a shielding cover 13 is provided around the detection plate 12, the probe group 22 is used to collect insulator test data, the magnetic field detection probe 17 is used to detect the size of the magnetic field generated by the product to be tested, and the filter assembly is used to shield the magnetic field; the insulating fixed plate 1 is provided with a receiving device 16 and a main controller 6 on the side facing away from the detection plate 12, the receiving device 16 and the probe group 22 are optically connected for receiving data returned by the probe group 22; the main controller 6 is electrically connected to the lifting mechanism, the receiving device 16, the magnetic field detection probe 17 and the filter assembly.

[0030] The detection plate 12 in this application is arranged parallel to and spaced apart from the insulating fixed plate 1. The two are connected by a lifting mechanism that can move the detection plate 12 toward or away from the insulating fixed plate 1. A shielding cover 13 is provided around the edges of the detection plate 12. The probe assembly 22, magnetic field detection probes 17, and filter assembly are located inside the shielding cover 13. A storage reservoir 7 for storing the magnetic field shielding threshold Q is electrically connected to the main controller 6.

[0031] According to some embodiments of the present application, the filter assembly includes a filter input receiver 18, a filter output receiver 19 and multiple filters 14 of different types. The filter input receiver 18 is installed at the power input interface, and the filter output receiver 19 is installed at the power output interface. The filters 14 are connected in parallel with each other, and a switching switch 15 electrically connected to the main controller 6 is provided on the branch of each filter 14.

[0032] The filter input receiver 18 can be detachably installed at the power input interface. The filter input receiver 18 includes an electrical input receiving clip 181, a filter input receiving controller 182 and a communicator 183. The filter input receiving controller 182 is electrically connected to the main controller 6 through the communicator 183, and the electrical input receiving clip 181 is electrically connected to the filter input receiving controller 182.

[0033] The filter output receiver 19 can be detachably installed at the power output interface. The filter output receiver 19 includes an electrical output receiving clip 191, a filter output receiving controller 192 and a communicator 193. The filter output receiving controller 192 is electrically connected to the main controller 6 through the communicator 193; the electrical output receiving clip 191 is electrically connected to the filter output receiving controller 192.

[0034] According to some embodiments of the present application, a power supply module for providing electrical energy to the detection system is further included, the power supply module including an electrical energy generator 8 and an energy accumulator 9, the electrical energy generator 8 is used to generate electrical energy, and the energy accumulator 9 is electrically connected to the electrical energy generator 8. The electrical energy generator 8 and the energy accumulator 9 are both fixed to the side of the insulating fixing plate 1 facing away from the detection plate 12, and the electrical energy generator 8 and the energy accumulator 9 are electrically connected to the main controller 6.

[0035] According to some embodiments of the present application, the electric energy generator 8 includes a solar panel or a wind generator.

[0036] According to some embodiments of the present application, the lifting mechanism includes a lifting plate 11 and a driving member 10, the lifting plate 11 is connected to the side of the detection plate 12 facing the insulating fixed plate 1, a guide rod 102 is provided on the lifting plate 11, and a guide sleeve 101 is correspondingly provided on the insulating fixed plate 1, and the driving member 10 is used to drive the guide rod 102 to slide along the guide sleeve 101 so that the detection plate 12 is close to or away from the insulating fixed plate 1.

[0037] It should be noted that the above-mentioned driving component 10 can be a lifting electric cylinder, which is installed and fixed on the side of the insulating fixing plate 1 facing away from the detection plate 12. The piston rod of the lifting electric cylinder passes through the insulating fixing plate 1 and is connected to the lifting plate 11, and the driving component 10 is electrically connected to the main controller 6.

[0038] In order to improve the guiding performance, a guide sleeve 101 is provided on the front, back, left and right sides of the insulating fixed plate 1. A guide rod 102 is movably inserted into each guide sleeve 101. The other ends of the four guide rods 102 are fixed on the lifting plate 11. Through the above-mentioned structural setting, when the lifting plate 11 moves up and down, it can play a guiding role and avoid displacement during movement.

[0039] According to some embodiments of the present application, the shielding cover 13 includes a shielding base mesh 131 formed of a magnetic field shielding mesh, and an insulating protective layer 132 is provided on the outer side of the shielding base mesh 131. Such a configuration can improve the electromagnetic field shielding effect.

[0040] It should be noted that when selecting the shielding cover 13, the shielding factor of the shielding cover 13 needs to be considered. The shielding factor is calculated as follows: Shielding factor = (1 + 4πσ / ωε)^-1; Here, σ represents the conductivity of the shielding material, ω is the operating frequency, and ε is the dielectric constant of the cable insulation material.

[0041] According to some embodiments of the present application, in order to facilitate the passage of wires, U-shaped notches 20 are provided on both the left and right sides of the shielding cover 13 to facilitate the passage of wires.

[0042] like Figure 6 As shown, according to some embodiments of the present application, a nickel-iron alloy layer 133 is provided on the outer side of the insulating protective layer 132. The provision of the nickel-iron alloy layer 133 can further improve the electromagnetic field shielding effect.

[0043] According to some embodiments of the present application, the insulating fixing plate 1 is provided with positioning plates 2 at both ends of the side facing the detection plate 12. The positioning plates 2 are provided with wire insertion holes 3. The wire insertion holes 3 are rotatably connected to movable guide wheels 4 that can move along the wires. Each movable guide wheel 4 is provided with a limiting insulating plate 5 in front and behind. The movable guide wheels 4 are electrically connected to the main controller 6 via a transmission mechanism 21.

[0044] In order to facilitate the passage of the wires into the through-holes 3 in the later stage, the positioning plates 2 on both sides can adopt a spliced ​​combination structure, and the spliced ​​structure can form the positioning plate 2. At the same time, the spliced ​​joints are adsorbed together by magnetic attraction to facilitate later disassembly. The specific setting belongs to the conventional technology in this field, so it will not be described in detail.

[0045] According to some embodiments of the present application, the main controller 6 monitors the magnetic field size generated by the product to be tested in real time through the magnetic field detection probe 17, then compares it with the magnetic field shielding threshold Q in the preset magnetic field interference shielding table, and selects a suitable filter 14.

[0046] Specifically, the magnetic field detection probe 17 is used to monitor the magnitude of the magnetic field generated by the product to be tested in real time, and then the electromagnetic field strength E1 before shielding is calculated; then one of the smallest filters 14 is turned on; the magnetic field detection probe 17 is used again to monitor the magnitude of the magnetic field generated by the product to be tested in real time, and then the electromagnetic field strength E2n after shielding is calculated; The shielding value SE (dB) n for the current filter 14 is calculated using the formula: SE (dB) n = 10 * log10 (E1 / E2n). The obtained SE (dB) n is then compared with the preset magnetic field shielding threshold Q. If SE (dB) n is greater than the magnetic field shielding threshold Q, it indicates that the current shielding effect does not meet the requirements. Another filter 14 needs to be selected and a new shielding value SE (dB) n needs to be obtained. This process continues until the most suitable filter 14 is found. If the obtained SE (dB) n is less than the magnetic field shielding threshold Q, it indicates that the current shielding effect meets the requirements, and the selection of other filters 14 can be stopped. Where n is a non-zero natural number, and the number of n is the same as the number of filters 14.

[0047] It should be noted that only one filter 14 can be selected to work at a time, and the other filters 14 are turned off. After a filter 14 is started, the filter input receiver 18 and the filter output receiver 19 are used to perform a filter magnetic field shielding operation on the detection wire.

[0048] like Figure 7 As shown, according to some embodiments of the present application, the insulating fixing plate 1 is provided with a display screen 103 electrically connected to the main controller 6 on the side away from the detection plate 12. The display screen 103 is provided to realize real-time display of data.

[0049] The specific working principle of this application is as follows: Install this device on the wire whose insulator needs to be detected, ensure that the detection wire passes through the wire plug-in hole 3 on one side and exits from the wire plug-in hole 3 on the other side, and clamp the electrical input receiving clip 181 on the filter input receiver 18 at the wire input interface, and clamp the electrical output receiving clip 191 of the filter output receiver 19 at the wire output interface, then start the equipment, the power generator 8 works to provide a steady supply of electrical energy to the accumulator 9, and the accumulator 9 supplies power to each device. At this time, the driving part 10 works, pushing the shielding cover 13 slowly close to the wire, and using the shielding cover 13 to shield the wire with a magnetic field, and then using the magnetic field detection probe 17 to monitor the size of the magnetic field generated by the product to be tested in real time, and then compare it with the magnetic field shielding threshold Q in the preset magnetic field interference shielding table, and select a suitable filter 14.

[0050] The specific steps are as follows: Using the magnetic field detection probe 17 to monitor the magnetic field generated by the product under test in real time, the electromagnetic field strength E1 before shielding is calculated; then, one of the smallest filters 14 is activated; then, using the magnetic field detection probe 17 to monitor the magnetic field generated by the product under test in real time, the electromagnetic field strength E2n after shielding is calculated; the shielding value SE (dB) n using the current filter 14 is calculated, and the obtained SE (dB) n is compared with the preset magnetic field shielding threshold Q. If SE (dB) n is greater than the magnetic field shielding threshold Q, it indicates that the current shielding effect does not meet the requirements, and another filter 14 needs to be selected to operate and obtain a new shielding value SE (dB) n, until the most suitable filter 14 is found. If SE (dB) n is less than the magnetic field shielding threshold Q, it indicates that the current shielding effect meets the requirements, and then the probe group 22 is driven to detect the insulator on the wire. As for how the probe group 22 detects the insulator, it is conventional technology in the field and will not be described in detail. At the same time, after one end is inspected, the transmission mechanism 21 is driven to operate, so that the movable guide wheel 4 moves along the conductor to inspect the next section of the conductor according to the above method. Therefore, the structural setting of the present invention can improve the magnetic field shielding effect, achieve complete magnetic field shielding, and ultimately improve the detection accuracy of the insulator.

[0051] The specific implementation methods described above further illustrate the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above description is only a specific implementation method of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An insulator detection system with shielding and anti-electromagnetic field interference, characterized in that: It includes a detection plate and an insulating fixed plate arranged opposite to each other; the detection plate is connected to the insulating fixed plate through a lifting mechanism; the detection plate is provided with a probe group, a magnetic field detection probe and a filter assembly on the side away from the insulating fixed plate, and a shielding cover is provided around the detection plate, the probe group is used to collect insulator test data, the magnetic field detection probe is used to detect the size of the magnetic field generated by the product to be tested, and the filter assembly is used to shield the magnetic field; the insulating fixed plate is provided with a receiving device and a main controller on the side away from the detection plate, the receiving device and the probe group are optically connected for receiving data returned by the probe group; the main controller is electrically connected to the lifting mechanism, the receiving device, the magnetic field detection probe and the filter assembly.

2. The insulator detection system with shielding and anti-electromagnetic field interference according to claim 1, characterized in that: The filter assembly includes a filter input receiver, a filter output receiver and multiple filters. The filter input receiver is installed at the power input interface, and the filter output receiver is installed at the power output interface. The filters are connected in parallel with each other, and a switching switch electrically connected to the main controller is provided on each filter branch.

3. The insulator detection system with shielding and anti-electromagnetic field interference according to claim 1, characterized in that: It also includes a power supply module for providing electric energy to the detection system. The power supply module includes an electric energy generator and an energy accumulator. The electric energy generator is used to generate electric energy. The energy accumulator is electrically connected to the electric energy generator.

4. The insulator detection system with shielding and anti-electromagnetic field interference according to claim 3, characterized in that: The electric energy generator includes a solar panel or a wind power generator.

5. The insulator detection system with shielding and anti-electromagnetic field interference according to claim 1, characterized in that: The lifting mechanism includes a lifting plate and a driving member. The lifting plate is connected to the side of the detection plate facing the insulating fixed plate. A guide rod is provided on the lifting plate, and a guide sleeve is correspondingly provided on the insulating fixed plate. The driving member is used to drive the guide rod to slide along the guide sleeve to make the detection plate approach or move away from the insulating fixed plate.

6. The insulator detection system with shielding and anti-electromagnetic field interference according to claim 1, characterized in that: The shielding cover comprises a shielding base net formed by a magnetic field shielding net, and an insulating protective layer is provided on the outer side of the shielding base net.

7. The insulator detection system with shielding and anti-electromagnetic field interference according to claim 6, characterized in that: A nickel-iron alloy layer is provided on the outer side of the insulating protective layer.

8. The insulator detection system with shielding and anti-electromagnetic field interference according to claim 1, characterized in that: The insulating fixing plate is provided with positioning plates at both ends facing the detection plate. The positioning plates are provided with wire insertion holes. The wire insertion holes are rotatably connected with movable guide wheels that can move along the wires. A limiting insulating plate is provided in front and behind each movable guide wheel.

9. The insulator detection system with shielding and anti-electromagnetic field interference according to claim 1, characterized in that: The main controller detects the magnitude of the magnetic field generated by the product to be tested through a magnetic field detection probe, compares it with the magnetic field shielding threshold in a preset magnetic field interference shielding table, and selects an appropriate filter.

10. The insulator detection system with shielding and anti-electromagnetic field interference according to claim 1, characterized in that: The insulating fixing plate is provided with a display screen electrically connected to the main controller on a side facing away from the detection plate.

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