Insulator defect detection compensation device

Abstract

The application relates to the field of electric power engineering and discloses an insulator defect detection compensation device which comprises a shell, a floating platform, an inner shell and a detection piece, the shell is installed at the upper and lower ends of an insulator, the floating platform is arranged on the inner side of the shell, the inner shell is arranged on the inner side of the floating platform, the detection piece is installed between the shell and the floating platform and between the floating platform and the inner shell and is used for detecting the shaking of the insulator, the shell and the floating platform are elastically connected through a first elastic piece, the floating platform and the inner shell are elastically connected through a second elastic piece, the weak shaking of the insulator is mechanically amplified through the first elastic piece and the second elastic piece, the detection unit composed of a fluorinated ethylene propylene friction layer film and an interdigital copper electrode layer is combined, self-powered three-dimensional shaking detection with high sensitivity is realized, the symmetrically arranged detection pieces can be mutually checked, and thus interference and misjudgment can be effectively eliminated.

Description

Technical Field

[0001] This invention relates to the field of power engineering, and in particular to an insulator defect detection and compensation device. Background Technology

[0002] During actual field testing, post insulators, due to prolonged exposure to outdoor environments and enduring harsh conditions such as high voltage and strong winds, are easily affected by a combination of complex environmental factors including wind loads and mechanical vibrations, resulting in three-dimensional swaying in three directions: up / down, left / right, and forward / backward. This swaying is characterized by randomness, wide bandwidth, and unstable amplitude. Once this three-dimensional swaying occurs, it directly leads to significant deviations in the propagation path of the photoacoustic pressure detection signal and severe distortion of the signal itself. For example, the laser spot may deviate from the predetermined detection area, or the receiving sensor may fail to accurately capture the reflected echo. Consequently, the accuracy of defect identification results based on photoacoustic pressure signals decreases significantly, resulting in large data deviations, poor repeatability, and difficulty in meeting the accuracy requirements of field testing.

[0003] Currently, traditional insulator sway sensors, when used for insulator sway detection, typically require an external power supply to operate normally. This adds complexity to on-site wiring and increases safety hazards. Furthermore, their resistance to electromagnetic interference and environmental noise is relatively poor, especially in high-voltage environments such as substations, where electromagnetic fields can easily couple into the sensor signal circuit, causing measurement errors. It is difficult to achieve long-term stable operation in outdoor live-line work environments with severe electromagnetic interference in power grid settings.

[0004] In addition, the detection sensitivity of these traditional sensors is inherently limited. Their resolution is often insufficient to distinguish minute displacement changes and cannot accurately extract key characteristic parameters such as amplitude and frequency during insulator swaying. Especially for weak swaying caused by light wind or slight mechanical vibration, the vibration amplitude may be only on the order of tens of micrometers. Their capture capability is severely inadequate, often resulting in no output or an output signal-to-noise ratio that is too low, making it difficult to meet actual detection needs. Summary of the Invention

[0005] Therefore, the technical problem to be solved by the present invention is that the existing technology cannot effectively detect the slight three-dimensional swaying of insulators caused by wind load and mechanical vibration, which leads to distortion of the photoacoustic pressure detection signal and a decrease in the accuracy of defect identification.

[0006] The above-mentioned technical problems are solved by the following technical solution: This invention proposes an insulator defect detection and compensation device, which includes, The outer casing is installed at both the upper and lower ends of the insulator; A floating platform is disposed inside the outer casing; An inner shell is disposed inside the floating platform; The detection element is installed between the outer shell and the floating platform, and between the floating platform and the inner shell, for detecting the swaying of the insulator; The outer shell and the floating platform are elastically connected by a first elastic element, and the floating platform and the inner shell are elastically connected by a second elastic element; the first elastic element and the second elastic element can be springs, elastic sheets, or other components with a reset function; Specifically, the device is installed at the end of the insulator. The outer shell, floating platform, and inner shell form a coaxial floating connection. When the insulator sways under wind load or mechanical vibration, the outer shell and the floating platform are elastically connected through the first elastic element, and the floating platform and the inner shell are elastically connected through the second elastic element. This causes a relative displacement between the three layers of the outer shell, the floating platform, and the inner shell. The magnitude of this relative displacement is proportional to the sway amplitude of the insulator. The detection device can convert the mechanical sway into an electrical signal, providing raw data for subsequent adaptive compensation. Even if the insulator only sways slightly, the first and second elastic elements can mechanically amplify this slight displacement, causing a more significant relative movement between the outer shell, the floating platform, and the inner shell. This allows the friction layers on both sides of the detection device to obtain sufficient sliding speed and displacement, thereby driving the detection device to generate an electrical signal of sufficient strength.

[0007] In a preferred embodiment of the insulator defect detection and compensation device of the present invention: the detection element is symmetrically arranged on the inner wall of the outer shell and the outer wall of the floating platform for detecting the vertical sway of the insulator; The detection elements are symmetrically arranged on the inner wall of the floating platform and the outer wall of the inner shell, for detecting the horizontal swaying of the insulator. Specifically, by using symmetrically arranged detection elements, the shaking in the same direction will simultaneously drive the detection elements on both sides to generate two independent electrical signals. The two signals can be mutually verified. If the signal characteristics on both sides are consistent, it can be confirmed that the shaking is real and the amplitude is accurate. If the difference between the signals on both sides exceeds the set threshold, it can be judged as a single-sided fault or local interference, thereby effectively avoiding misjudgment.

[0008] In a preferred embodiment of the insulator defect detection and compensation device of the present invention: at least two sets of symmetrically arranged detection elements are provided between the inner wall of the floating platform and the outer wall of the inner shell, and the two sets of symmetrically arranged detection elements are perpendicular to each other in the horizontal plane; Specifically, the two sets of symmetrically arranged detection elements are installed perpendicularly to each other in the horizontal plane, which can detect horizontal sway in the front-back direction and the left-right direction respectively. This ensures that no matter which horizontal direction the insulator is displaced, it can be effectively captured by at least one set of detection elements, avoiding detection blind spots and improving the completeness and accuracy of horizontal sway detection.

[0009] In a preferred embodiment of the insulator defect detection and compensation device of the present invention: the detection element includes at least one detection unit and a protective layer attached to the outermost side of the detection element; the protective layer is made of polyurethane UV-resistant aging-resistant material, which can protect the internal detection unit from outdoor dust, moisture and mechanical damage, ensure its long-term stable operation and extend its service life.

[0010] In a preferred embodiment of the insulator defect detection and compensation device of the present invention: the detection unit includes a fluorinated ethylene propylene friction layer film and an interdigitated copper electrode layer disposed opposite to the fluorinated ethylene propylene friction layer film; Specifically, when the insulator sway causes relative displacement between the outer shell, the floating platform, and the inner shell, it induces relative sliding friction between the fluorinated ethylene propylene friction layer film and the interdigitated copper electrode layer. During the contact and separation of the two materials, charge transfer occurs, and mechanical kinetic energy is directly converted into an electrical signal based on the principle of triboelectric nano-power generation. This process does not require external power supply and is entirely self-driven by mechanical motion. Moreover, the output signal strength is positively correlated with the sliding speed and amplitude. Therefore, the stronger the sway, the stronger the generated electrical signal, thereby improving the sensitivity to insulator sway, and is especially suitable for detecting weak sway.

[0011] In a preferred embodiment of the insulator defect detection and compensation device of the present invention: the gap between the fluorinated ethylene propylene friction layer film and the interdigitated copper electrode layer is 100μm~150μm; Specifically, this gap ensures stable and sufficient frictional contact between the fluorinated ethylene propylene friction layer film and the interdigitated copper electrode layer during shaking. It prevents film adhesion or jamming due to an excessively small gap, and also avoids insufficient friction due to an excessively large gap. This avoids adhesion caused by an excessively small gap or reduced output sensitivity due to an excessively large gap, thereby stabilizing the output of an electrical signal proportional to the shaking amplitude and frequency. This ensures that each shaking generates a repeatable electrical response waveform, guaranteeing the repeatability and reliability of the detection data.

[0012] In a preferred embodiment of the insulator defect detection and compensation device of the present invention: a processing module is provided inside the inner shell, which is used to receive and process the electrical signals generated by the detection unit; by integrating the processing module inside the inner shell, external electromagnetic interference and the influence of harsh environments are avoided, ensuring the stability and reliability of signal processing.

[0013] In a preferred embodiment of the insulator defect detection and compensation device of the present invention: the processing module includes a signal conditioning circuit, a data processing and storage module, a wireless transmission module, and a power management module. The signal conditioning circuit is used to perform noise reduction processing on the electrical signal generated by the detection unit. The data processing and storage module is used to extract sway characteristic parameters. The wireless transmission module is used to send the characteristic parameters to the host computer. The power management module is electrically connected to the detection unit and is used to store the electrical energy generated by the detection unit and power the processing module. Specifically, the data processing and storage module first performs a reverse calculation on the amplified electrical signal based on the known amplification factors of the first and second elastic elements. That is, it uses the displacement amplification factor of the spring to deduce the actual displacement value of the insulator, restoring the true sway amplitude and frequency of the insulator, thus avoiding data distortion caused by mechanical amplification. The wireless transmission module sends the restored true sway characteristic parameters to the host computer. This design utilizes the amplification of the sway amplitude by the first and second elastic elements to solve the problem that weak swaying is difficult to generate detectable electrical signals. Furthermore, the reverse calculation ensures the authenticity of the output data, providing a reliable basis for the host computer to generate accurate compensation instructions. The power management module stores the extra electrical energy after the detection unit emits an electrical signal, realizing efficient energy recovery and utilization.

[0014] In a preferred embodiment of the insulator defect detection and compensation device of the present invention: the outer shell includes a first half-shell and a second half-shell hinged to the first half-shell, and the ends of the first half-shell and the second half-shell away from the hinge are snapped together; the second half-shell hinged to the first half-shell can be snapped together by means of magnetic attraction, spring pin or the like. Specifically, the first and second half-shells adopt a clamp-type opening and closing design, similar to a clamp structure, which can quickly wrap around and lock onto the end of the insulator. This facilitates the installation of the insulator end, enabling quick, non-destructive, and secure on-site installation without the need for special tools. This significantly reduces the installation difficulty and time cost for inspection personnel, making it suitable for high-altitude live-line work.

[0015] In a preferred embodiment of the insulator defect detection and compensation device of the present invention: both the floating platform and the inner shell are composed of two halves, and one half of the floating platform and the inner shell is installed in the first half shell, and the other half of the floating platform and the inner shell is installed in the second half shell. Specifically, the two halves come together to form the complete floating platform and the inner shell. This split structure makes the assembly of internal detection components and elastic components simple and quick. It not only facilitates the assembly and maintenance of internal components, but also allows for rapid installation in conjunction with the first half shell and the second half shell. When the two halves of the outer shell are closed, the internal floating platform and the inner shell half naturally align and close, ensuring the concentricity of the multi-layer structure.

[0016] The beneficial effects of this invention are as follows: by mechanically amplifying the slight sway of the insulator through the first and second elastic elements, even the slight amplitude sway that could not be captured by conventional sensors can generate a significant electrical signal response. Combined with the detection unit composed of the fluorinated ethylene propylene friction layer film and the interdigitated copper electrode layer, mechanical energy is directly converted into electrical energy output based on the principle of triboelectric nano-power generation, realizing self-powered, highly sensitive three-dimensional sway detection.

[0017] Simultaneously, the symmetrically arranged detection components can achieve mutual verification. That is, the shaking in the same direction will simultaneously trigger the signal acquisition of the independent channels on both sides, thereby effectively eliminating interference and misjudgment and greatly improving the reliability of the detection results. The processing module reversely calculates the true shaking characteristic parameters based on the known amplification factor, instead of directly outputting amplified false data. This provides an accurate basis for the upper computer to dynamically compensate the photoacoustic pressure detection parameters, so that the compensation amount is completely matched with the actual shaking state, thereby eliminating the signal distortion caused by shaking. This fundamentally solves the error problem caused by insulator swing in photoacoustic pressure detection, and significantly improves the identification accuracy and detection reliability of micro and shallow defects in insulators. Attached Figure Description

[0018] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments of the present invention will be briefly described below. Obviously, the drawings described below only relate to some embodiments of the present invention and are not intended to limit the present invention.

[0019] Figure 1 A schematic diagram of the overall structure and installation of the present invention is shown.

[0020] Figure 2 A schematic diagram of the internal structure of the present invention is shown.

[0021] Figure 3 A schematic diagram of the detection element structure of the present invention is shown. Detailed Implementation

[0022] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0023] The terminology used in this invention is that which is currently widely used in the art in view of the function of the invention, but these terms may vary according to the intentions of those skilled in the art, precedents or new technologies in the art.

[0024] Furthermore, specific terms can be chosen independently, and in such cases, their detailed meanings will be described in the detailed description of the invention. Therefore, the terms used in this specification should not be construed as simple names, but rather as based on their meanings and the overall description of the invention.

[0025] Reference Figures 1-3 This embodiment provides an insulator defect detection and compensation device, including a housing 1, a floating platform 2, an inner shell 3, and a detection element 4. The housing 1 is installed at both ends of the insulator 100; the floating platform 2 is disposed inside the housing 1; the inner shell 3 is disposed inside the floating platform 2; the detection element 4 is installed between the housing 1 and the floating platform 2, and between the floating platform 2 and the inner shell 3, for detecting the swaying of the insulator 100; the housing 1 and the floating platform 2 are elastically connected by a first elastic element 5, and the floating platform 2 and the inner shell 3 are elastically connected by a second elastic element 6; when the device is installed at the end of the insulator 100, and the insulator 100 sways under wind load or mechanical vibration, the floating platform 2 will sway due to the elastic connection between the housing 1 and the floating platform 2 via the first elastic element 5. The insulator 100 is elastically connected to the inner shell 3 via the second elastic element 6, which causes relative displacement between the three layers of the outer shell 1, the floating platform 2, and the inner shell 3. The mechanical shaking can be converted into an electrical signal by the detection element 4, providing raw data for subsequent adaptive compensation. Even if the insulator 100 only produces a slight shaking, the first elastic element 5 and the second elastic element 6 can mechanically amplify the slight displacement, causing a more significant relative movement between the outer shell 1, the floating platform 2, and the inner shell 3, thereby driving the detection element 4 to generate an electrical signal of sufficient strength. The first elastic element 5 and the second elastic element 6 can be springs, elastic sheets, or other components with a reset function to achieve the elastic connection between the outer shell 1 and the floating platform 2, and the elastic connection between the floating platform 2 and the inner shell 3.

[0026] In some embodiments, such as Figure 1 and Figure 2 The inner wall of the outer shell 1 and the outer wall of the floating platform 2 are symmetrically equipped with detection elements 4 to detect the vertical sway of the insulator 100; the inner wall of the floating platform 2 and the outer wall of the inner shell 3 are symmetrically equipped with detection elements 4 to detect the horizontal sway of the insulator 100. By using symmetrically arranged detection elements 4, the sway in the same direction will simultaneously drive the detection elements 4 on both sides to generate two independent electrical signals. The two signals can be mutually verified. If the signal characteristics on both sides are consistent, it can be confirmed that the sway is real and the amplitude is accurate. If the difference between the signals on both sides exceeds the set threshold, it can be judged as a single-sided fault or local interference, thereby effectively avoiding misjudgment.

[0027] In some embodiments, such as Figure 1 and Figure 2 At least two sets of symmetrically arranged detection elements 4 are provided between the inner wall of the floating platform 2 and the outer wall of the inner shell 3. The two sets of symmetrically arranged detection elements 4 are perpendicular to each other in the horizontal plane. This installation method can detect horizontal sway in the front-back direction and the left-right direction respectively, ensuring that no matter which horizontal direction the insulator 100 is displaced, it can be effectively captured by at least one set of detection elements 4, avoiding detection blind spots and improving the integrity and accuracy of horizontal sway detection.

[0028] In some embodiments, such as Figures 1-3 The detection element 4 includes at least one detection unit 41 and a protective layer 42 attached to the outermost side of the detection element 4. The protective layer 42 is made of polyurethane UV-resistant aging material, which can protect the internal detection unit 41 from outdoor dust, moisture and mechanical damage, ensure its long-term stable operation and extend its service life.

[0029] In some embodiments, such as Figures 1-3 The detection unit 41 includes a fluorinated propylene friction layer film 411 and an interdigitated copper electrode layer 412 disposed opposite to the fluorinated propylene friction layer film 411. When the insulator 100 shakes, causing relative displacement between the outer shell 1, the floating platform 2 and the inner shell 3, it will cause the fluorinated propylene friction layer film 411 and the interdigitated copper electrode layer 412 to generate relative sliding friction. Based on the principle of triboelectric nano-power generation, mechanical kinetic energy is directly converted into electrical signals. This process does not require external power supply, and the output signal strength is positively correlated with the sliding speed and amplitude, thereby improving the sensitivity to the shaking of the insulator 100.

[0030] In some embodiments, such as Figures 1-3 The gap between the fluorinated ethylene propylene friction layer film 411 and the interdigitated copper electrode layer 412 is 100μm~150μm. This gap ensures that the fluorinated ethylene propylene friction layer film 411 and the interdigitated copper electrode layer 412 have stable and sufficient frictional contact during shaking, avoiding adhesion due to too small a gap or reduced output sensitivity due to too large a gap. This ensures a stable output of an electrical signal that is proportional to the shaking amplitude and frequency, guaranteeing the repeatability and reliability of the detection data.

[0031] In some embodiments, such as Figure 2 The inner shell 3 is equipped with a processing module, which is used to receive and process the electrical signals generated by the detection unit 41. Integrating the processing module inside the inner shell 3 avoids external electromagnetic interference and the influence of harsh environments, ensuring the stability and reliability of signal processing.

[0032] In some embodiments, such as Figures 1-3The processing module includes a signal conditioning circuit, a data processing and storage module, a wireless transmission module, and a power management module. The signal conditioning circuit is used to reduce noise in the electrical signal generated by the detection unit 41. The data processing and storage module first performs reverse calculation on the amplified electrical signal based on the known amplification factor of the first elastic element 5 and the second elastic element 6 to restore the true sway amplitude and frequency of the insulator 100, so as to avoid data distortion caused by mechanical amplification. The wireless transmission module sends the restored true sway characteristic parameters to the host computer. This design uses the amplification of the sway amplitude by the first elastic element 5 and the second elastic element 6 to solve the problem that weak sway is difficult to generate a detectable electrical signal. The reverse calculation ensures the authenticity of the output data and provides a reliable basis for the host computer to generate accurate compensation instructions. The power management module is electrically connected to the detection unit 41 and is used to store the extra power after the detection unit 41 emits an electrical signal and to power the processing module. In some embodiments, such as Figure 1 and Figure 2 The outer shell includes a first half-shell 11 and a second half-shell 12 hinged to the first half-shell 11. The ends of the first half-shell 11 and the second half-shell 12 away from the hinge are snapped together. The second half-shell 12 hinged to the first half-shell 11 can be snapped together by magnetic attraction, spring pin or other means. The first half-shell 11 and the second half-shell 12 adopt a clamp-type opening and closing design, which facilitates the installation of the end of the insulator 100, realizes fast, non-destructive and firm on-site installation, and greatly reduces the installation difficulty and time cost for testing personnel.

[0033] In some embodiments, such as Figure 1 and Figure 2 Both the floating platform 2 and the inner shell 3 are composed of two halves. One half of the floating platform 2 and the inner shell 3 is installed inside the first half shell 11, and the other half of the floating platform 2 and the inner shell 3 is installed inside the second half shell 12. The two halves are joined together to form a complete floating platform 2 and inner shell 3, which facilitates the assembly and maintenance of internal components. At the same time, it can be used in conjunction with the first half shell 11 and the second half shell 12 to achieve rapid installation.

[0034] In summary, the device is installed at the upper and lower ends of the insulator 100 by the hinged engagement of the first half-shell 11 and the second half-shell 12. The outer shell 1 and the floating platform 2 are elastically connected by the first elastic element 5, and the floating platform 2 and the inner shell 3 are elastically connected by the second elastic element 6. Thus, when the insulator 100 sways under wind load or mechanical vibration, even if the sway is weak, the first elastic element 5 and the second elastic element 6 will mechanically amplify the weak displacement, resulting in a more significant relative movement between the outer shell 1, the floating platform 2, and the inner shell 3. The detection elements 4 symmetrically arranged on the inner wall of the outer shell 1 and the outer wall of the floating platform 2 detect vertical sway. At least two sets of detection elements 4 symmetrically arranged on the inner wall of the floating platform 2 and the outer wall of the inner shell 3 are perpendicular to each other in the horizontal plane, respectively detecting horizontal sway in the front-back and left-right directions. The symmetrical arrangement allows the sway in the same direction to simultaneously drive the detection elements 4 on opposite sides to generate two independent electrical signals. The two signals are cross-checked. If the signal characteristics are consistent, the sway is confirmed to be real and the amplitude is accurate. If the difference exceeds the threshold, it is judged as a fault or interference, effectively avoiding misjudgment.

[0035] The mechanical kinetic energy can be directly converted into an electrical signal through the relative sliding friction between the fluorinated ethylene propylene friction layer film 411 and the interdigitated copper electrode layer 412. The processing module receives the electrical signal, and the signal conditioning circuit performs noise reduction processing. The data processing and storage module first performs reverse conversion on the amplified signal based on the known amplification factor of the first elastic element 5 and the second elastic element 6 to restore the true sway amplitude and frequency of the insulator 100 and other characteristic parameters, so as to avoid data distortion caused by mechanical amplification. The wireless transmission module sends the restored true sway characteristic parameters to the host computer.

[0036] After obtaining the actual sway characteristic parameters, the host computer dynamically adjusts the detection parameters of the photoacoustic pressure detection device to compensate for the propagation path deviation and signal distortion of the photoacoustic pressure signal caused by the insulator sway in real time. The compensated detection results are then combined with the sway data for multimodal fusion analysis, thereby effectively eliminating sway interference and achieving accurate identification and location of defects.

[0037] By mechanically amplifying the slight swaying of the insulator 100 through the first elastic element 5 and the second elastic element 6, and combining the detection unit 41 composed of the fluorinated ethylene propylene friction layer film 411 and the interdigitated copper electrode layer 412, a self-powered, highly sensitive three-dimensional swaying detection is achieved.

[0038] The symmetrically arranged detection elements 4 can achieve mutual verification, thereby effectively eliminating interference and misjudgment, and significantly reducing the probability of false alarms caused by single-sided sensor failure, local electromagnetic interference, or mechanical jamming. The processing module reversely calculates the actual sway characteristic parameters based on the known amplification factor, and restores the electrical signal amplified by the first elastic element 5 and the second elastic element 6 to the amplitude and frequency of the insulator's actual sway, avoiding over-compensation or under-compensation. This provides an accurate basis for the upper computer to dynamically compensate the photoacoustic pressure detection parameters, thereby eliminating signal distortion caused by sway and significantly improving the identification accuracy and detection reliability of micro-small and shallow defects in insulators.

[0039] Finally, it should be noted that the methods and devices described in detail above are merely embodiments, and those skilled in the art can modify these embodiments in different ways as long as they do not depart from the scope of the present invention.

Claims

1. An insulator defect detection and compensation device, characterized in that: include, The outer casing (1) is installed at the upper and lower ends of the insulator (100); A floating platform (2) is disposed inside the outer shell (1); The inner shell (3) is disposed inside the floating platform (2); The detection component (4) is installed between the outer shell (1) and the floating platform (2), and between the floating platform (2) and the inner shell (3), for detecting the swaying of the insulator (100); The outer shell (1) and the floating platform (2) are elastically connected by a first elastic element (5), and the floating platform (2) and the inner shell (3) are elastically connected by a second elastic element (6).

2. The insulator defect detection and compensation device according to claim 1, characterized in that: The inner wall of the outer shell (1) and the outer wall of the floating platform (2) are symmetrically provided with the detection element (4) for detecting the vertical sway of the insulator (100); the inner wall of the floating platform (2) and the outer wall of the inner shell (3) are symmetrically provided with the detection element (4) for detecting the horizontal sway of the insulator (100).

3. The insulator defect detection and compensation device according to claim 2, characterized in that: At least two sets of symmetrically arranged detection elements (4) are provided between the inner wall of the floating platform (2) and the outer wall of the inner shell (3), and the two sets of symmetrically arranged detection elements (4) are perpendicular to each other in the horizontal plane.

4. The insulator defect detection and compensation device according to any one of claims 1 to 3, characterized in that: The detection element (4) includes at least one detection unit (41) and a protective layer (42) attached to the outermost side of the detection element (4).

5. The insulator defect detection and compensation device according to claim 4, characterized in that: The detection unit (41) includes a fluorinated ethylene propylene friction layer film (411) and an interdigitated copper electrode layer (412) disposed opposite to the fluorinated ethylene propylene friction layer film (411).

6. The insulator defect detection and compensation device according to claim 5, characterized in that: The gap between the fluorinated ethylene propylene friction layer film (411) and the interdigitated copper electrode layer (412) is 100μm~150μm.

7. The insulator defect detection and compensation device according to claim 5 or 6, characterized in that: The inner shell (3) is equipped with a processing module, which is used to receive and process the electrical signals generated by the detection unit (41).

8. The insulator defect detection and compensation device according to claim 7, characterized in that: The processing module includes a signal conditioning circuit, a data processing and storage module, a wireless transmission module, and a power management module. The signal conditioning circuit is used to perform noise reduction processing on the electrical signal generated by the detection unit (41). The data processing and storage module is used to extract the shaking feature parameters. The wireless transmission module is used to send the feature parameters to the host computer. The power management module is electrically connected to the detection unit (41) and is used to store the electrical energy generated by the detection unit (41) and power the processing module.

9. The insulator defect detection and compensation device according to claim 1, characterized in that: The outer shell includes a first half-shell (11) and a second half-shell (12) hinged to the first half-shell (11), with the first half-shell (11) and the second half-shell (12) snapped together at the ends away from the hinge.

10. The insulator defect detection and compensation device according to claim 9, characterized in that: The floating platform (2) and the inner shell (3) are both composed of two halves, and one half of the floating platform (2) and the inner shell (3) is installed in the first half shell (11), while the other half of the floating platform (2) and the inner shell (3) is installed in the second half shell (12).

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