Lightning arrester resistor disc damage simulation device with different impact modes

Abstract

The invention discloses a lightning arrester resistor disc damage simulation device with different impact modes, belongs to the field of lightning arrester detection, and solves the problems that a resistor disc impact test effect is poor and an effective overcurrent full-waveform database cannot be established, the lightning arrester resistor disc damage simulation device comprises a bottom support and a power supply, and the bottom support is provided with first supporting frames arranged at intervals; a second supporting frame is installed on the bottom support and located on one side of the first supporting frame, a supporting rod is movably connected to the second supporting frame, a plurality of impact simulation covers capable of being arranged on the periphery of the lightning arrester in a sleeving mode are assembled on the supporting rod, a first driving assembly for driving the supporting rod to move in multiple directions is arranged on the bottom support, and the lightning arrester is connected with a power source. The first supporting frame is provided with a current detection device used for collecting overcurrent on a resistor disc of the lightning arrester and a data processing center used for analyzing data collected by the current detection device and building a database. According to the invention, a more effective overcurrent full-waveform database is established while the impact test effect of the resistor disc is improved.

Description

Technical Field

[0001] The invention relates to the field of lightning arrester detection, in particular to a lightning arrester resistor plate destruction simulation device with different impact modes. Background Art

[0002] The resistor in a lightning arrester is a key component for regulating voltage. Resistors are typically made of a conductive material encased in an insulating material, and come in various shapes, such as cylindrical and disc-shaped. During normal use, the surface of the resistor is subject to numerous external impacts, causing physical damage such as cracks and breakage. This can alter the resistor's electrical properties, such as by changing the local electric field distribution, which in turn affects its overall nonlinear characteristics and reduces its overvoltage limiting capability. Furthermore, surface damage can become a point of entry for impurities such as moisture and dust, leading to subsequent internal moisture problems.

[0003] In order to study the arrester and build a full waveform database of overcurrent under typical fault conditions, and to clarify the correlation between the impact and the fault waveform characteristics in the typical fault factors, it is necessary to simulate the surface impact of the resistor in production. However, the existing resistor impact test is just a simple local impact, and the impact range and amplitude cannot be controlled, resulting in poor test results and the inability to establish an effective full waveform database of overcurrent. Therefore, we proposed an arrester resistor damage simulation device with different forms of impact. Summary of the Invention

[0004] The purpose of the present invention is to provide a lightning arrester resistor damage simulation device with different forms of impact modes, which solves the problem in the prior art that the resistor impact test effect is poor and an effective overcurrent full waveform database cannot be established. While improving the resistor impact test effect, a more effective overcurrent full waveform database is established.

[0005] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a lightning arrester resistor destruction simulation device with different forms of impact modes, including a bottom bracket and a power supply, the bottom bracket is provided with a first support frame arranged at intervals, and a storage space for placing the lightning arrester is formed between the first support frames, and a second support frame is installed on the bottom bracket on one side of the first support frame, and a support rod is movably connected to the second support frame, and the support rod is equipped with a plurality of impact simulation covers that can be sleeved on the periphery of the lightning arrester, and the bottom bracket is provided with a first drive assembly that drives the support rod to move in multiple directions, the lightning arrester is connected to the power supply, and the first support frame is provided with a current detection device for collecting overcurrent on the resistor of the lightning arrester and a data processing center for analyzing and database-building the data collected by the current detection device.

[0006] After adopting the above technical solution, the present invention has the following advantages: a plurality of impact simulation covers that can be set on the periphery of the lightning arrester are provided, and the support rod can be driven to move in multiple directions in combination with the first drive component, thereby realizing impact simulation of different forms and directions. Compared with a single impact simulation method, this can more comprehensively simulate various external impact situations that the lightning arrester may suffer in actual operation, such as mechanical impact from different angles, greatly enriching the experimental scene, and providing a more comprehensive data basis for studying the impact of external impact on the lightning arrester under typical fault conditions. By connecting the lightning arrester to the power supply, the electrical working conditions of the lightning arrester in the actual power system operation can be simulated. By combining multiple impact simulation methods, the impact of external impact on the lightning arrester resistor under different electrical conditions can be studied. At the same time, the newly added data processing center can perform in-depth analysis of the collected data and build a database, which can not only obtain overcurrent information in real time, but also integrate and analyze data under different impact conditions, and explore the intrinsic connection between the data, providing more powerful data support for studying the relationship between external impact and overcurrent, clarifying the correlation between external impact and fault waveform feature quantity in the typical fault factor of the lightning arrester, thereby constructing a full waveform database of overcurrent under typical fault conditions.

[0007] Furthermore, the current detection equipment includes a current sensor for measuring the overcurrent condition of the resistor of the lightning arrester after being impacted, and a signal conditioning circuit for amplifying, filtering, and impedance matching the signal output by the current sensor. The data processing center includes a data acquisition card for sampling the conditioned current signal and converting it into a digital quantity, and data analysis software for decomposing the collected overcurrent data and drawing a waveform diagram. The data acquisition card and the signal conditioning circuit are connectable.

[0008] Using the above technical solution, the current sensor is responsible for accurately measuring the overcurrent condition of the resistor after being impacted, and can capture relatively subtle current changes. The signal conditioning circuit amplifies, filters, and impedance-matches the sensor output signal, removing noise interference as much as possible, amplifying the weak signal to a more appropriate amplitude, and ensuring that the signal input to the data acquisition card is stable and accurate as much as possible, providing a reliable foundation for subsequent data analysis and greatly improving data accuracy. The signal conditioning circuit and data acquisition card can be connected, reflecting the good compatibility of the entire system. The components have clear division of labor and work together to facilitate subsequent functional expansion based on research needs. The data analysis software works in conjunction with the data acquisition card and computer to decompose the collected overcurrent data and draw waveform diagrams, extracting key characteristic parameters such as peak value, frequency, and rise time, providing strong data support for studying the relationship between impact and overcurrent, and helping researchers to understand overcurrent phenomena more intuitively and deeply.

[0009] Furthermore, the first drive assembly includes a bottom adjustment seat, a drive motor fixed on the bottom adjustment seat, and a lateral adjustment disk installed on the output shaft of the drive motor, and the eccentric position of the lateral adjustment disk and the support rod are connected by a control connecting rod.

[0010] By adopting the above technical solution, the lateral adjustment disk is connected to the support rod at an eccentric position through a control link. When the drive motor rotates, the support rod can realize a complex curved motion trajectory, making the impact simulation cover more diverse in the way and angle of impact on the resistor plate of the lightning arrester.

[0011] Furthermore, the first drive assembly also includes a telescope and an arc-shaped adjustment guide rail fixed on the bottom bracket, the arc-shaped adjustment guide rail is arranged with the connection point of the control connecting rod and the support rod as the center of the circle, the bottom adjustment seat is slidably assembled on the arc-shaped adjustment guide rail, and the output end of the telescope and the bottom adjustment seat are movably connected.

[0012] Using the above technical solution, the arc-shaped adjustment guide rail is arranged with the connection point of the control connecting rod and the support rod as the center of the circle, and the bottom adjustment seat can slide on it, cooperating with the drive motor to drive the rotation of the lateral adjustment disk and the push and pull of the control connecting rod on the support rod, thereby realizing the impact simulation cover to have impacts in as many directions as possible, and being able to realize the impact simulation cover to the resistor plate of the lightning arrester in as many angles and all directions as possible, thereby being closer to the various impact conditions that the lightning arrester may encounter in actual application scenarios.

[0013] Furthermore, the first support frame is provided with a second driving assembly for driving the lightning arrester to rotate along its axial direction.

[0014] By adopting the above technical solution, the second drive assembly can realize the axial rotation of the lightning arrester, so that the resistor piece can be subjected to impact testing at different angles.

[0015] Furthermore, the first support frame is provided with an arc-shaped bottom support frame with an opening and an arc-shaped top support frame movably installed at the opening position of the upper end of the arc-shaped bottom support frame, the arc-shaped bottom support frame and the first support frame are fixedly connected, and the second drive assembly includes an electric drive wheel installed inside the arc-shaped bottom support frame and a limiting drive wheel installed inside the arc-shaped top support frame, and the electric drive wheel and the limiting drive wheel are used to clamp the connection end of the lightning arrester.

[0016] By adopting the above technical solution, the arc-shaped design can tightly wrap the connection end of the lightning arrester, effectively preventing the lightning arrester from shaking, shifting, and other unstable conditions during the drive rotation process, thereby ensuring the accuracy of the impact simulation as much as possible. At the same time, the electric drive wheel is installed inside the arc-shaped bottom support frame, and the limit drive wheel is installed inside the arc-shaped top support frame. The two together clamp the connection end of the lightning arrester, applying a more stable and balanced driving force from two directions, so that the lightning arrester can rotate axially as smoothly and evenly as possible, and avoid rotation jamming or deflection caused by uneven driving force as much as possible, laying a solid foundation for subsequent complex impact tests.

[0017] Furthermore, a mounting ring is provided on the second support frame, and a plurality of return springs are installed on the inner side surface of the mounting ring along the circumferential direction, and the circumference of the support rod is connected to the plurality of return springs.

[0018] Using the above technical solution, multiple return springs along the circumferential direction on the inner side surface of the mounting ring on the second support frame are circumferentially connected to the support rod. When the first drive assembly drives the support rod to move in a specific direction, the return spring can play an auxiliary pushing or pulling role. Since the return spring itself has elastic deformation characteristics, it can adaptively provide assistance in different directions according to the movement trend of the support rod. At this time, multiple return springs act as buffers to absorb this part of the inertial impact energy and prevent the support rod from shaking violently or even losing control due to sudden turning. This allows the support rod to smoothly and fluently transition from one impact angle to another, ensuring the continuity of the entire multi-angle impact process. After each impact, the return spring pulls the support rod with its own elastic force, driving the impact simulation cover to reset smoothly, without the need for an additional complex drive mechanism to adjust the position.

[0019] Furthermore, the bottom bracket is provided with a transverse guide rail, and a bottom electric control screw for controlling the translation of the first support frame is movably assembled inside the transverse guide rail. The first support frame is sleeved on the bottom electric control screw through the bottom internal thread adjustment block and is threadedly assembled with the bottom electric control screw.

[0020] By adopting the above technical solution, the bottom-mounted electric control screw can drive the first support frame to move, allowing the distance between the first support frames to be precisely adjusted according to the size of the lightning arrester, ensuring that the test device can be applied to lightning arresters of various specifications, increasing the versatility and flexibility of the equipment.

[0021] Furthermore, lateral reinforcing struts are movably mounted on both sides of the first support frame, and a plurality of oblique limiting slots cooperating with the lateral reinforcing struts are provided on the upper surface of the transverse guide rail.

[0022] By adopting the above technical solution, the lateral reinforcement struts provide additional lateral support force for the first support frame to prevent it from tilting or shaking when adjusting the spacing or bearing impact. Multiple oblique limit slots allow flexible adjustment of the spacing between the first support frames according to different lightning arrester sizes, and provide a reliable locking function at each preset position.

[0023] Furthermore, the impact simulation cover includes a first mounting cover shell and a second mounting cover shell that are detachably connected, the first mounting cover shell is connected through an upper bracket and a support rod, and the second mounting cover shell is located below the first mounting cover shell and is connected through a lower bracket and a support rod.

[0024] The split design allows for the selection of different sizes or types of first and second mounting covers to meet diverse testing requirements. Operators can quickly replace or adjust the first and second mounting covers as needed, enhancing the adaptability and flexibility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the accompanying drawings: Figure 1 Schematic diagram of the structure of the arrester resistor destruction simulation device with different forms of impact in the present invention; Figure 2 A cross-sectional view of a lightning arrester resistor plate destruction simulation device with different impact modes in the present invention; Figure 3 A schematic structural diagram of the arrester resistor destruction simulation device with different impact modes from another perspective in the present invention; Figure 4 A cross-sectional view from another perspective of the arrester resistor destruction simulation device with different impact modes in the present invention; In the figure, 10, bottom bracket; 11, horizontal guide rail; 12, bottom electric control screw; 13, bottom internal thread adjustment block; 14, oblique limit slot; 20, first support frame; 21, accommodating space; 22, arc-shaped bottom support frame; 23, arc-shaped top support frame; 24, electric drive wheel; 25, limit drive wheel; 26, lateral reinforcement support rod; 27, horizontal detection frame; 30, current detection device; 40, second support frame; 41, support rod; 42, mounting ring; 43, return spring; 44, external adjustment seat; 50, impact simulation cover; 51, first mounting cover; 52, second mounting cover; 53, upper bracket; 54, lower bracket; 60, bottom adjustment seat; 61, drive motor; 62, lateral adjustment disk; 63, control link; 64, telescope; 65, arc-shaped adjustment guide rail. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments.

[0027] The terms "first," "second," "third," "fourth," and so forth (if any) in the description and claims of the present invention and in the accompanying drawings are used to distinguish similar items and are not necessarily used to describe a particular order or sequential sequence. It should be understood that the terms used in this manner are interchangeable where appropriate, such that the embodiments of the present invention described herein can be practiced in sequences other than those illustrated or described herein.

[0028] It should be understood that in various embodiments of the present invention, the size of the serial numbers of the processes does not mean the order of execution. The execution order of the processes should be determined by their functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0029] It should be understood that in the present invention, "include" and "have" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to these processes, methods, products or apparatuses.

[0030] It should be understood that in the present invention, "plurality" refers to two or more. "And / or" is merely a description of the association relationship of associated objects, indicating that three relationships may exist. For example, X and / or Y can represent three situations: X exists alone, X and Y exist at the same time, and Y exists alone. The character " / " generally indicates that the previous and next associated objects are in an "or" relationship. "Including X, Y and Z" and "Including X, Y, Z" means that X, Y, and Z are all included. "Including X, Y or Z" means that one of X, Y, and Z is included. "Including X, Y and / or Z" means that any one, any two, or any three of X, Y, and Z are included.

[0031] The following specific embodiments are used to describe the technical solution of the present invention in detail. The following specific embodiments can be combined or replaced with each other according to actual conditions, and the same or similar concepts or processes may not be described in detail in some embodiments.

[0032] like Figures 1 to 4As shown, the present invention provides a lightning arrester resistor destruction simulation device with different forms of impact modes, including a bottom bracket 10 and a power supply, the bottom bracket 10 is provided with a first support frame 20 arranged at intervals, and a storage space 21 for placing the lightning arrester is formed between the first support frames 20, and a second support frame 40 is installed on the bottom bracket 10 on one side of the first support frame 20, and a support rod 41 is movably connected to the second support frame 40, and a plurality of impact simulation covers 50 that can be sleeved on the periphery of the lightning arrester are equipped with a first driving component for driving the support rod 41 to move in multiple directions, the lightning arrester and the power supply are connected, and the first support frame 20 is provided with a current detection device 30 for collecting overcurrent on the resistor of the lightning arrester and a data processing center for analyzing and database-building the data collected by the current detection device 30.

[0033] A plurality of impact simulation covers 50 that can be set on the periphery of the lightning arrester are provided, and the support rod 41 can be driven to move in multiple directions in combination with the first drive component, thereby realizing impact simulation of different forms and directions. Compared with a single impact simulation method, this can more comprehensively simulate various external impact situations that the lightning arrester may suffer in actual operation, such as mechanical impact from different angles, greatly enriching the experimental scene, and providing a more comprehensive data basis for studying the impact of external impact on the lightning arrester under typical fault conditions. By connecting the lightning arrester to the power supply, the electrical working conditions of the lightning arrester in the actual power system operation can be simulated. Combining multiple impact simulation methods, the impact of external impact on the lightning arrester resistor under different electrical conditions can be studied. At the same time, the newly added data processing center can conduct in-depth analysis of the collected data and build a database, which can not only obtain overcurrent information in real time, but also integrate and analyze data under different impact conditions, and explore the inherent connection between the data, providing more powerful data support for studying the relationship between external impact and overcurrent, clarifying the correlation between external impact and fault waveform characteristic quantity in the typical fault factor of the lightning arrester, and thus constructing a full waveform database of overcurrent under typical fault conditions.

[0034] Specifically, the first drive assembly includes a bottom adjustment base 60, a drive motor 61 fixed to the bottom adjustment base 60, and a lateral adjustment disk 62 mounted on the output shaft of the drive motor 61. The eccentric position of the lateral adjustment disk 62 is connected to the support rod 41 via a control link 63. When the drive motor 61 rotates, the support rod 41 moves in a complex curved trajectory, making the impact simulation cover 50 more diverse in the way and angle of impact on the arrester's resistor plates.

[0035] Furthermore, the first support frame 20 is provided with a transverse detection frame 27, on which the current detection device 30 is mounted. A mounting ring 42 is provided on the second support frame 40. Multiple return springs 43 are circumferentially mounted on the inner side of the mounting ring 42. The support rod 41 is circumferentially connected to the return springs 43. When the first drive assembly drives the support rod 41 in a specific direction, the return springs 43 assist in pushing or pulling. Because the return springs 43 inherently possess elastic deformation properties, they can adaptively provide assistance in different directions based on the movement of the support rod 41. The multiple return springs 43 act as buffers, absorbing this inertial impact energy and preventing the support rod 41 from shaking violently or even losing control due to sudden changes in direction. This allows the support rod 41 to smoothly and fluidly transition from one impact angle to another, ensuring the continuity of the entire multi-angle impact process. After each impact, the return springs 43, with their own elastic force, pull the support rod 41, causing the impact simulation cover 50 to smoothly return to its original position, eliminating the need for an additional, complex drive mechanism to adjust its position.

[0036] It should be noted that the return springs 43 can be provided in an appropriate number such as six or eight.

[0037] In order to further increase the impact mode on the resistor sheet of the lightning arrester, the first drive assembly also includes a telescopic device 64 and an arc-shaped adjustment guide rail 65 fixed on the bottom bracket 10. The arc-shaped adjustment guide rail 65 is arranged with the connection point of the control link 63 and the support rod 41 as the center of the circle. The bottom adjustment seat 60 is slidably assembled on the arc-shaped adjustment guide rail 65, and the output end of the telescopic device 64 is movably connected to the bottom adjustment seat 60. The arc-shaped adjustment guide rail 65 is arranged with the connection point of the control link 63 and the support rod 41 as the center of the circle. The bottom adjustment seat 60 can slide on it, and cooperate with the drive motor 61 to drive the rotation of the lateral adjustment disk 62 and the push and pull of the control link 63 on the support rod 41, thereby realizing the multi-angle movement of the impact simulation cover 50, and being able to realize the impact simulation cover 50 on the resistor sheet of the lightning arrester at as many angles and in all directions as possible, thereby being closer to the various impact conditions that the lightning arrester may encounter in actual application scenarios.

[0038] It should be noted that the bottom adjustment seat 60 includes a sliding seat that is slidably sleeved on the outside of the arc-shaped adjustment guide rail 65 and a control rod fixed on the outside of the sliding seat. One end of the telescope 64 is movably mounted on the bottom bracket 10, and the other end is movably connected to the control rod.

[0039] Among them, the current detection device 30 includes a current sensor for measuring the overcurrent of the lightning arrester resistor after being impacted, and a signal conditioning circuit for amplifying, filtering, and impedance matching the signal output by the current sensor. The data processing center includes a data acquisition card for sampling the conditioned current signal and converting it into a digital quantity, and data analysis software for decomposing the collected overcurrent data and drawing a waveform diagram. The data acquisition card and the signal conditioning circuit are connectable. The current sensor is responsible for accurately measuring the overcurrent of the resistor after being impacted and can capture relatively subtle current changes. The signal conditioning circuit amplifies, filters, and impedance matches the sensor output signal, removes noise interference as much as possible, amplifies the weak signal to a more appropriate amplitude, and ensures that the signal input to the data acquisition card is stable and accurate as much as possible, providing a reliable basis for subsequent data analysis and greatly improving the accuracy of the data. The signal conditioning circuit and the data acquisition card are connectable, reflecting the good compatibility of the entire system. Each component has a clear division of labor and cooperates with each other, which facilitates subsequent functional expansion according to research needs. The data analysis software works in conjunction with the data acquisition card and computer to decompose the collected overcurrent data and draw waveform diagrams, extracting key characteristic parameters such as peak value, frequency, and rise time, providing strong data support for studying the relationship between impact and overcurrent, and helping researchers to understand the overcurrent phenomenon more intuitively and deeply.

[0040] Furthermore, an optical detection device may be provided to perform a more comprehensive detection of the wear and damage conditions on the surface of the resistor plates of the arrester.

[0041] The first support frame 20 is provided with a second driving assembly for driving the arrester to rotate along its axial direction, so that the resistor sheet of the arrester can be subjected to impact tests at different angles.

[0042] Specifically, the first support frame 20 is provided with an arc-shaped bottom support frame 22 with an opening and an arc-shaped top support frame 23 movably mounted at the opening position of the upper end of the arc-shaped bottom support frame 22. The arc-shaped bottom support frame 22 and the first support frame 20 are fixedly connected. The arc-shaped design can tightly wrap the connection end of the lightning arrester, and effectively prevent the lightning arrester from shaking, displacing and other unstable conditions during the driving rotation process as much as possible, thereby ensuring the accuracy of the impact simulation as much as possible. The second drive assembly includes an electric drive wheel 24 installed inside the arc-shaped bottom support frame 22 and a limit drive wheel 25 installed inside the arc-shaped top support frame 23. The electric drive wheel 24 and the limit drive wheel 25 are used to clamp the connection end of the lightning arrester, and apply a more stable and balanced driving force from two directions, so that the lightning arrester can rotate axially as smoothly and uniformly as possible, and avoid rotation jamming or deflection caused by uneven driving force as much as possible, laying a solid foundation for subsequent complex impact tests.

[0043] Since different lightning arresters have different lengths, in order to adapt to the use of lightning arresters of different lengths, the bottom bracket 10 is provided with a horizontal guide rail 11, and the horizontal guide rail 11 is movably equipped with a bottom electric control screw 12 for controlling the translation of the first support frame 20. The first support frame 20 is threadedly assembled on the bottom electric control screw 12 through the bottom internal thread adjustment block 13, allowing the distance between the first support frames 20 to be precisely adjusted according to the size of the lightning arrester, ensuring that the test device can be applied to lightning arresters of various specifications, increasing the versatility and flexibility of the equipment.

[0044] It should be noted that, in this embodiment, two first support frames 20 are provided, and two bottom-mounted electric control screw rods 12 are provided, which independently drive the two first support frames 20 to move.

[0045] In order to improve the stability of the lightning arrester when it is subjected to impact, lateral reinforcement struts 26 are movably installed on both sides of the first support frame 20, and a plurality of oblique limit slots 14 that cooperate with the lateral reinforcement struts 26 are opened on the upper surface of the transverse guide rail 11. The lateral reinforcement struts 26 provide additional lateral support force for the first support frame 20 to prevent it from tilting or shaking when adjusting the spacing or undergoing impact. Multiple oblique limit slots 14 allow the spacing between the first support frames 20 to be flexibly adjusted according to different lightning arrester sizes, and provide a reliable locking function at each preset position, so that two triangular support frame structures can be formed on both sides of the first support frame 20, thereby ensuring the support force on both sides of the first support frame 20.

[0046] Accordingly, in order to adapt to different lightning arresters, the support rod 41 is slidably equipped with multiple external adjustment seats 44 for installing the impact simulation cover 50. The multiple external adjustment seats 44 allow the impact simulation cover 50 to be installed at different positions of the support rod 41, thereby realizing multi-point and multi-angle impact testing of the resistor plate of the lightning arrester.

[0047] To further facilitate testing, the impact simulation cover 50 includes a detachably connected first mounting cover 51 and second mounting cover 52. The first mounting cover 51 is connected to the support rod 41 via an upper bracket 53. The second mounting cover 52 is located below the first mounting cover 51 and connected to the support rod 41 via a lower bracket 54. This split design allows for the selection of different sizes or types of first and second mounting covers 51, 52 to meet different testing requirements. Operators can quickly replace or adjust the first and second mounting covers 51, 52 as needed, improving the adaptability and flexibility of the equipment.

[0048] During use, the operator adjusts the gap between the first support frame 20 on both sides of the bottom bracket 10 to adapt to the lightning arrester to be tested, and then installs the terminals at both ends of the lightning arrester between the electric drive wheel 24 and the limit drive wheel 25, and then puts the impact simulation cover 50 on the periphery of the resistor on the lightning arrester, and then starts the drive motor 61 and the telescopic device 64. The drive motor 61 drives the lateral adjustment disk 62 to rotate, and the control connecting rod 63 drives the support rod 41 to swing, thereby impacting and wearing the surface of the lightning arrester resistor through the impact simulation cover 50. The impact can be vertical, horizontal and oblique impact to simulate different impact conditions. At the same time, the electric drive wheel 24 drives the entire lightning arrester to rotate, thereby simulating different positions of the lightning arrester resistor. After the impact is completed, the impact simulation cover 50 is opened, and the overcurrent situation is simulated by the power supply. The current sensor is used to collect the overcurrent waveform, operating environment parameters, electrical parameters and basic information of the lightning arrester in real time, and the time, type and other information of the external impact are recorded. The signal conditioning circuit amplifies and filters the signal output by the current sensor , impedance matching processing, and then connect the data acquisition card and the signal conditioning circuit, transmit the collected sensor data to the data processing center through the data acquisition card, and store it in the designated folder. Use data analysis software to clean the original data and remove abnormal data caused by sensor failure, interference, etc. According to the collected information, use data analysis software to extract the features of the collected external impact signal, such as impact peak, duration, frequency component, etc.; at the same time, extract the time domain and frequency domain features of the overcurrent waveform, such as mean, variance, peak, frequency component, amplitude spectrum and phase spectrum, compare the overcurrent characteristics under normal operation and external impact, and analyze the influence of external impact on overcurrent parameters, such as how the impact changes the overcurrent peak and rise time. Use machine learning algorithms, such as multivariate linear regression and neural networks, with impact characteristics as input variables and overcurrent waveform characteristics as output variables. Through a large amount of data training, establish a correlation model between external impact characteristics and overcurrent waveform characteristics, and build a full waveform database of overcurrent under typical fault conditions. Researchers use visualization tools in database applications, such as drawing curves showing the relationship between impact energy and overcurrent peak, to analyze the relationship between external impacts and fault waveform characteristics in typical fault factors of lightning arresters, helping users to more intuitively understand the rules behind the data and providing support for status monitoring, fault diagnosis, and preventive maintenance of lightning arresters.

[0049] It should be noted that the impact force can be adjusted by adjusting the length of the control link 63. The control link 63 can be designed with an electrically controlled telescopic structure, such as being directly changed to an electrically controlled support rod, or it can be adjusted by manual replacement.

[0050] In addition to the above-mentioned preferred embodiments, the present invention has other implementation modes. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative work are within the scope of protection requested by the present invention.

Claims

1. A lightning arrester resistor damage simulation device with different forms of impact, characterized by: It includes a bottom bracket and a power supply, the bottom bracket is provided with a first support frame arranged at intervals, and a storage space for placing a lightning arrester is formed between the first support frames, the bottom bracket is provided with a second support frame installed on one side of the first support frame, the second support frame is movably connected with a support rod, the support rod is equipped with a plurality of impact simulation covers that can be sleeved on the periphery of the lightning arrester, the bottom bracket is provided with a first driving component that drives the support rod to move in multiple directions, the lightning arrester is connected to the power supply, the first support frame is provided with a current detection device for collecting overcurrent on the resistor of the lightning arrester and a data processing center for analyzing and building a database for the data collected by the current detection device.

2. The arrester resistor damage simulation device with different impact modes according to claim 1 is characterized in that: The current detection equipment includes a current sensor for measuring the overcurrent condition of the resistor of the lightning arrester after being impacted, and a signal conditioning circuit for amplifying, filtering, and impedance matching the signal output by the current sensor. The data processing center includes a data acquisition card for sampling the conditioned current signal and converting it into a digital quantity, and data analysis software for decomposing the collected overcurrent data and drawing a waveform diagram. The data acquisition card and the signal conditioning circuit are connectable.

3. The arrester resistor damage simulation device with different impact modes according to claim 1 is characterized in that: The first driving assembly includes a bottom adjustment seat, a driving motor fixed on the bottom adjustment seat, and a lateral adjustment disk installed on the output shaft of the driving motor. The outer side of the lateral adjustment disk and the support rod are connected by a control connecting rod.

4. The arrester resistor damage simulation device with different impact modes according to claim 3 is characterized in that: The first driving assembly also includes a telescope and an arc-shaped adjustment guide rail fixed on the bottom bracket. The arc-shaped adjustment guide rail is arranged with the connection point of the control connecting rod and the support rod as the center of the circle. The bottom adjustment seat is slidably assembled on the arc-shaped adjustment guide rail, and the output end of the telescope is movably connected to the bottom adjustment seat.

5. The arrester resistor damage simulation device with different impact modes according to claim 1 is characterized in that: The first support frame is provided with a second driving assembly for driving the lightning arrester to rotate around the axis of the lightning arrester.

6. The arrester resistor damage simulation device with different impact modes according to claim 5 is characterized in that: The first support frame is provided with an arc-shaped bottom support frame with an opening and an arc-shaped top support frame movably installed at the opening position of the upper end of the arc-shaped bottom support frame. The arc-shaped bottom support frame and the first support frame are fixedly connected. The second drive assembly includes an electric drive wheel installed inside the arc-shaped bottom support frame and a limiting drive wheel installed inside the arc-shaped top support frame. The electric drive wheel and the limiting drive wheel are used to clamp the connection end of the lightning arrester.

7. The arrester resistor damage simulation device with different impact modes according to claim 1 is characterized in that: The second support frame is provided with a mounting ring, and a plurality of return springs are installed along the circumferential direction on the inner side surface of the mounting ring. The circumference of the support rod is connected to the plurality of return springs.

8. The arrester resistor damage simulation device with different impact modes according to claim 1 is characterized in that: The bottom bracket is provided with a transverse guide rail, and a bottom electric control screw rod for controlling the translation of the first support frame is movably assembled inside the transverse guide rail. The first support frame is sleeved on the bottom electric control screw rod through a bottom internal thread adjustment block and is threadedly assembled with the bottom electric control screw rod.

9. The arrester resistor damage simulation device with different impact modes according to claim 8, characterized in that: Lateral reinforcing struts are movably mounted on both sides of the first support frame, and a plurality of oblique limiting slots cooperating with the lateral reinforcing struts are provided on the upper surface of the transverse guide rail.

10. The arrester resistor damage simulation device with different impact modes according to claim 1, characterized in that: The impact simulation cover includes a first mounting cover shell and a second mounting cover shell that are detachably connected. The first mounting cover shell is connected to a support rod through an upper bracket, and the second mounting cover shell is located below the first mounting cover shell and is connected to a support rod through a lower bracket.

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