Wireless synchronous testing device for zinc oxide lightning arrester

Abstract

The utility model discloses a zinc oxide lightning arrester wireless synchronization test device, which comprises a plurality of distributed detection units, a satellite clock synchronization module, an edge computing terminal and a wireless communication module, the distributed detection units collect signals, the satellite clock synchronization module provides a unified time reference, and the edge computing terminal provides an edge computing terminal. The edge computing terminal processes and analyzes data, and the wireless communication module realizes wireless transmission. Simultaneous detection of multiple lightning arresters is realized through the distributed detection unit, and a whole set of leads do not need to be laid for each lightning arrester independently; satellite clock synchronization ensures that sampling time of each unit is consistent, and data comparison accuracy is improved. The wireless communication module completely replaces a traditional wired lead, so that the field wiring workload is reduced, and the lead winding risk is reduced; the edge computing terminals process data in a centralized mode, and complexity of decentralized processing is avoided. The field operation efficiency can be greatly improved, and personal and equipment safety risks caused by too many leads are reduced.

Description

Technical Field

[0001] This utility model relates to the field of power technology, and in particular to a wireless synchronization testing device for zinc oxide surge arresters. Background Technology

[0002] In the testing of zinc oxide surge arresters (MOAs) in substations, traditional methods require laying long voltage and current leads, which presents numerous problems. On-site cable laying is labor-intensive and demanding, and the large number of test leads makes them prone to tangling, inconvenient to move, and requires repeated disassembly and reassembly. Furthermore, an excessive number of leads can easily lead to personal injury and equipment safety risks. Utility Model Content

[0003] The purpose of this invention is to provide a wireless synchronous testing device for zinc oxide surge arresters, which aims to solve the technical problem that excessive leads during the testing of zinc oxide surge arresters (MOAs) in substations can easily cause personal and equipment safety risks.

[0004] To address the aforementioned problems, according to one aspect of this application, an embodiment of the present invention provides a wireless synchronization testing device for zinc oxide surge arresters, the device comprising:

[0005] Multiple distributed detection units are used to collect current and voltage signals from different zinc oxide surge arresters.

[0006] A satellite clock synchronization module is connected to each of the distributed detection units and is used to provide a unified time reference for each of the distributed detection units.

[0007] The edge computing terminal is connected to each of the distributed detection units via a wireless communication module, and is used to receive and process the signals collected by each of the distributed detection units.

[0008] The wireless communication module is connected to both the distributed detection unit and the edge computing terminal to enable wireless data transmission between the distributed detection unit and the edge computing terminal.

[0009] In some implementations, the distributed detection unit includes a current sampling module and a voltage sampling module. The current sampling module is used to collect the current signal of the zinc oxide surge arrester, and the voltage sampling module is used to collect the voltage signal of the zinc oxide surge arrester. Both the current sampling module and the voltage sampling module are connected to the satellite clock synchronization module and are connected to the edge computing terminal through the wireless communication module.

[0010] In some embodiments, the current sampling module and the voltage sampling module are integrated in the same housing, which is installed at the corresponding detection position of the zinc oxide surge arrester.

[0011] In some implementations, the satellite clock synchronization module uses BeiDou or GPS satellite clock synchronization technology, and the satellite clock synchronization module is connected to each of the distributed detection units via wired or wireless means.

[0012] In some implementations, the wireless communication module employs wireless communication technologies based on LoRa, WiFi, or Bluetooth. The wireless communication module includes a first communication submodule disposed on the distributed detection unit and a second communication submodule disposed on the edge computing terminal, wherein the first communication submodule and the second communication submodule perform wireless data transmission.

[0013] In some implementations, the edge computing terminal includes a data receiving module, a data processing module, and a data display module. The data receiving module is connected to the wireless communication module and is used to receive the collected signals. The data processing module is connected to the data receiving module and is used to analyze and process the received signals. The data display module is connected to the data processing module and is used to display the processed results, including waveforms, data parameters, and test conclusions.

[0014] In some embodiments, the edge computing terminal further includes a historical data storage module connected to the data processing module for storing processed historical test data; and / or,

[0015] The data processing module can perform phase compensation processing on the acquired current and voltage signals, and the data display module can display the relevant parameters after phase compensation.

[0016] In some embodiments, the zinc oxide surge arrester wireless synchronous testing device further includes a remote control module, which is connected to the edge computing terminal through the wireless communication module to support remote start / stop testing and parameter configuration.

[0017] In some implementations, the number of the distributed detection units is configured according to the number of zinc oxide surge arresters in the substation, with each zinc oxide surge arrester corresponding to at least one distributed detection unit.

[0018] In some embodiments, the zinc oxide surge arrester wireless synchronization testing device further includes a power module, which is connected to the distributed detection unit, the satellite clock synchronization module, the edge computing terminal and the wireless communication module respectively, to provide operating power to each module; the power module uses a rechargeable battery or an external power supply.

[0019] Compared with the prior art, the wireless synchronous testing device for zinc oxide surge arresters of this utility model has at least the following beneficial effects:

[0020] This utility model discloses a wireless synchronization testing device for zinc oxide surge arresters. The device includes multiple distributed detection units, a satellite clock synchronization module, an edge computing terminal, and a wireless communication module. The distributed detection units collect signals, the satellite clock synchronization module provides a unified time reference, the edge computing terminal processes and analyzes the data, and the wireless communication module enables wireless transmission. This wireless synchronization testing device for zinc oxide surge arresters enables simultaneous testing of multiple arresters through distributed detection units, eliminating the need to lay a complete set of leads for each arrester. Satellite clock synchronization ensures consistent sampling time for each unit, improving the accuracy of data comparison. The wireless communication module completely replaces traditional wired leads, reducing on-site wiring workload and lowering the risk of lead tangling. The edge computing terminal centrally processes data, avoiding the cumbersome process of decentralized processing. This significantly improves on-site work efficiency and reduces the safety risks to personnel and equipment caused by excessive leads.

[0021] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0022] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 A schematic diagram showing the positional relationship between the distributed detection unit and the surge arrester in the wireless synchronous testing device for zinc oxide surge arresters provided in this embodiment of the utility model. Detailed Implementation

[0024] To further illustrate the technical means and effects adopted by this utility model to achieve its intended purpose, the specific implementation methods, structures, features, and effects according to this utility model application are described in detail below with reference to the accompanying drawings and preferred embodiments. In the following description, different "embodiments" or "embodiments" do not necessarily refer to the same embodiment. Furthermore, specific features, structures, and characteristics in one or more embodiments can be combined in any suitable form.

[0025] In the description of this utility model, it should be clarified that the terms "first," "second," etc., in the specification, claims, and drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence; the terms "vertical," "lateral," "longitudinal," "front," "back," "left," "right," "up," "down," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this utility model, and do not mean that the device or element referred to must have a specific orientation or position, and therefore should not be construed as a limitation of this utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Traditional testing methods for zinc oxide surge arresters (MOAs) in substations require laying long voltage and current leads, presenting numerous problems. On-site cable laying is labor-intensive and demanding; the numerous test leads are prone to tangling, inconvenient to move, and require repeated disassembly and reassembly; furthermore, excessive leads pose safety risks to personnel and equipment. Current wireless testing solutions from some manufacturers are incomplete, only modifying voltage sampling wirelessly while current detection still uses leads, failing to fundamentally solve the problem. Therefore, a completely new testing device is needed to improve on-site operational efficiency and reduce safety risks.

[0028] Example

[0029] like Figure 1 As shown, this utility model embodiment provides a wireless synchronization testing device for zinc oxide surge arresters, the device comprising:

[0030] Multiple distributed detection units are used to collect current and voltage signals from different zinc oxide surge arresters.

[0031] A satellite clock synchronization module is connected to each of the distributed detection units and is used to provide a unified time reference for each of the distributed detection units.

[0032] The edge computing terminal is connected to each of the distributed detection units via a wireless communication module, and is used to receive and process the signals collected by each of the distributed detection units.

[0033] The wireless communication module is connected to both the distributed detection unit and the edge computing terminal to enable wireless data transmission between the distributed detection unit and the edge computing terminal.

[0034] In this embodiment, the wireless synchronization testing device for zinc oxide surge arresters includes multiple distributed detection units, a satellite clock synchronization module, an edge computing terminal, and a wireless communication module. The distributed detection units collect signals, the satellite clock synchronization module provides a unified time reference, the edge computing terminal processes and analyzes the data, and the wireless communication module enables wireless transmission. This novel wireless synchronization testing device for zinc oxide surge arresters achieves simultaneous testing of multiple arresters through distributed detection units, eliminating the need to lay a complete set of leads for each arrester. Satellite clock synchronization ensures consistent sampling times for each unit, improving the accuracy of data comparison. The wireless communication module completely replaces traditional wired leads, reducing on-site wiring workload and mitigating the risk of lead tangling. The edge computing terminal centrally processes data, avoiding the cumbersome process of decentralized processing. This significantly improves on-site work efficiency and reduces the safety risks to personnel and equipment caused by excessive leads.

[0035] The number of distributed detection units corresponds one-to-one with the number of surge arresters in the substation, and each unit is uniquely bound to a surge arrester number.

[0036] In some implementations, the distributed detection unit includes a current sampling module and a voltage sampling module. The current sampling module is used to collect the current signal of the zinc oxide surge arrester, and the voltage sampling module is used to collect the voltage signal of the zinc oxide surge arrester. Both the current sampling module and the voltage sampling module are connected to the satellite clock synchronization module and are connected to the edge computing terminal through the wireless communication module.

[0037] In this embodiment, the distributed detection unit of the zinc oxide surge arrester wireless synchronization test device includes a current sampling module and a voltage sampling module, both of which are connected to a satellite clock synchronization module and connected to an edge computing terminal through a wireless communication module.

[0038] This utility model's wireless synchronous testing device for zinc oxide surge arresters integrates current and voltage sampling functions into a distributed detection unit, enabling synchronous acquisition of current and voltage at the same detection point. This avoids the time difference problem associated with traditional separate sampling and improves measurement accuracy. Current sampling also uses wireless transmission, solving the problem of some existing solutions that only wirelessly sample voltage while still using leads for current sampling. This further reduces the number of leads, lowers operational complexity, and reduces safety risks.

[0039] In some embodiments, the current sampling module and the voltage sampling module are integrated in the same housing, which is installed at the corresponding detection position of the zinc oxide surge arrester.

[0040] In this embodiment, the current sampling module and voltage sampling module of the wireless synchronous testing device for zinc oxide surge arresters are integrated into the same housing, which is installed at the corresponding detection position of the zinc oxide surge arrester.

[0041] The integrated housing design reduces the fragmentation of modules, facilitating installation and disassembly and reducing on-site setup time. Installed near the surge arrester detection location, it shortens the distance from the sampling point to the module, reducing signal transmission loss and improving sampling accuracy. Simultaneously, it avoids the clutter of multiple scattered modules on-site, reducing the risk of module collision damage.

[0042] The casing is directly fixed to the grounding lead or counter mounting position of the zinc oxide surge arrester.

[0043] The current sampling module uses a clamp-on current transformer, and the voltage sampling module uses a voltage divider voltage sensor; both share the same signal conditioning circuit.

[0044] The housing is a metal-sealed structure with IP67 protection rating, featuring a snap-on mounting clamp at the bottom and an integrated antenna boss at the top.

[0045] In some implementations, the satellite clock synchronization module uses BeiDou or GPS satellite clock synchronization technology, and the satellite clock synchronization module is connected to each of the distributed detection units via wired or wireless means.

[0046] In this embodiment, the satellite clock synchronization module adopts BeiDou or GPS satellite clock synchronization technology and is connected to each distributed detection unit via wired or wireless means.

[0047] BeiDou or GPS technology has high-precision time synchronization capabilities, ensuring that each distributed detection unit maintains synchronization at the microsecond level or even higher, eliminating time deviations in sampling by different units, and making the phase comparison of current and voltage data more accurate; wired or wireless connection methods can flexibly adapt to different substation environments, and wireless connection can be used in areas where wiring is difficult, further reducing on-site wiring work.

[0048] The satellite clock synchronization module uses BeiDou or GPS timing technology to send time synchronization signals to each distributed detection unit via PTP protocol or IRIG-B code.

[0049] When the satellite clock synchronization module is connected via wired connection, it uses an RS485 bus to transmit IRIG-B code synchronization signals; when connected wirelessly, it uses a dedicated 2.4GHz frequency band to transmit PTP (Precise Time Protocol) messages. Each distributed detection unit has a built-in high-precision clock chip that dynamically calibrates its local clock based on the received synchronization signal, achieving a time synchronization accuracy of ±1μs.

[0050] In some implementations, the wireless communication module employs wireless communication technologies based on LoRa, WiFi, or Bluetooth. The wireless communication module includes a first communication submodule disposed on the distributed detection unit and a second communication submodule disposed on the edge computing terminal, wherein the first communication submodule and the second communication submodule perform wireless data transmission.

[0051] In this embodiment, the wireless communication module employs LoRa, WiFi, or Bluetooth technology and includes a first communication submodule (located in the distributed detection unit) and a second communication submodule (located in the edge computing terminal). The first communication submodule and the second communication submodule form a star network topology.

[0052] LoRa technology is suitable for long-distance, low-power transmission, while WiFi and Bluetooth are suitable for short-distance, high-speed transmission. The appropriate technology can be selected according to the size and environment of the substation to ensure stable data transmission. The distributed configuration of submodules enables each detection unit to form an independent wireless link with the terminal, avoiding signal interference and improving the reliability of data transmission. Wireless transmission replaces wired leads, completely solving the problems of tangled leads and inconvenient movement, and reducing the workload of repeatedly disassembling and assembling leads.

[0053] The wireless communication module adopts the following anti-interference design:

[0054] LoRa communication uses spread spectrum technology to suppress electromagnetic interference from substations with a link budget of 157dB.

[0055] When communicating via WiFi / Bluetooth, a dynamic frequency hopping mechanism is used, which automatically switches to a clean frequency band when channel interference is detected.

[0056] All wireless data transmissions incorporate CRC checksums and retransmission mechanisms to ensure data integrity.

[0057] In some implementations, the edge computing terminal includes a data receiving module, a data processing module, and a data display module. The data receiving module is connected to the wireless communication module and is used to receive the collected signals. The data processing module is connected to the data receiving module and is used to analyze and process the received signals. The data display module is connected to the data processing module and is used to display the processed results, including waveforms, data parameters, and test conclusions.

[0058] In this embodiment, the edge computing terminal includes a data receiving, processing, and display module. The data receiving module is connected to the wireless communication module, the data processing module analyzes the signal, and the data display module displays the results.

[0059] The data receiving module is dedicated to receiving signals, ensuring no data loss; the data processing module analyzes the raw signals (such as waveform analysis and parameter calculation), eliminating the need for manual processing and improving data processing efficiency and accuracy; the data display module intuitively presents waveforms, parameters, and conclusions, facilitating staff to quickly determine the status of the surge arrester, shortening post-test analysis time, and improving overall operational efficiency.

[0060] The data processing module has a built-in phase compensation algorithm, and the compensation formula is as follows:

[0061] i 补偿 = i 采样 + k Δ t

[0062] Where, Δ t The transmission delay calibrated for the satellite clock synchronization module includes signal conditioning, wireless transmission, and other aspects;

[0063] i 采样 The original phase difference is calculated from the current and voltage sampling values;

[0064] k The compensation coefficient needs to be calibrated according to the hardware characteristics;

[0065] i 补偿 This is the phase value ultimately used for calculation.

[0066] Phase compensation algorithms eliminate the impact of wireless transmission delay on phase analysis.

[0067] The compensation coefficient k is determined through factory calibration: a standard signal source is used to input current and voltage signals with known phase differences to the distributed detection unit, and the actual measured phase difference θ is recorded by the edge computing terminal. 测量 According to the formula k=(θ) 标准 -θ 测量 The calibration value is calculated using k / Δt, and the k value is then embedded into the compensation algorithm of the data processing module.

[0068] In some implementations, the edge computing terminal further includes a historical data storage module, which is connected to the data processing module and is used to store processed historical test data.

[0069] In this embodiment, the edge computing terminal includes a historical data storage module, which is connected to the data processing module to store historical test data.

[0070] Historical data storage makes it easy for staff to trace test results at different points in time. By comparing and analyzing the changing trends of surge arrester performance, potential faults can be predicted in advance. There is no need for manual recording and saving of data, which reduces human error. At the same time, it provides long-term data support for substation equipment status assessment and improves the scientific nature of equipment operation and maintenance.

[0071] In some implementations, the data processing module can perform phase compensation processing on the acquired current and voltage signals, and the data display module can display the relevant parameters after phase compensation.

[0072] In this embodiment, the data processing module can perform phase compensation processing, and the data display module displays the parameters after phase compensation.

[0073] Phase compensation processing can eliminate phase deviations during signal transmission (such as phase changes caused by wireless transmission delay and line impedance), making the phase relationship of current and voltage more accurate and improving the calculation accuracy of key parameters such as resistive current. Displaying the compensated parameters makes it easier for staff to obtain real equipment status data, avoid misjudgments caused by phase deviations, and improve the reliability of test results.

[0074] In some embodiments, the zinc oxide surge arrester wireless synchronous testing device further includes a remote control module, which is connected to the edge computing terminal through the wireless communication module to support remote start / stop testing and parameter configuration.

[0075] In this embodiment, the wireless synchronous testing device for zinc oxide surge arresters also includes a remote control module. The remote control module is connected to the edge computing terminal through a wireless communication module, supporting remote start / stop testing and parameter configuration.

[0076] Workers can remotely control the start, stop, and parameter adjustment of tests from a safe area without having to approach high-voltage equipment, reducing the risk of electric shock. Especially in severe weather or complex site environments, it reduces the time workers are exposed to dangerous environments, further improving operational safety.

[0077] In some implementations, the number of the distributed detection units is configured according to the number of zinc oxide surge arresters in the substation, with each zinc oxide surge arrester corresponding to at least one distributed detection unit.

[0078] In this embodiment, the number of distributed detection units is configured according to the number of surge arresters, with each surge arrester corresponding to at least one distributed detection unit.

[0079] On-demand configuration of testing units enables synchronous testing of all surge arresters in the substation, avoiding the tedious process of testing each arrester individually and significantly shortening the overall testing time. Each surge arrester corresponds to an independent testing unit, ensuring that test data do not interfere with each other, improving the accuracy of testing a single surge arrester, and meeting the need for simultaneous testing of multiple surge arresters in the substation, thereby improving overall work efficiency.

[0080] In some embodiments, the zinc oxide surge arrester wireless synchronization testing device further includes a power module, which is connected to the distributed detection unit, the satellite clock synchronization module, the edge computing terminal and the wireless communication module respectively, to provide operating power to each module; the power module uses a rechargeable battery or an external power supply.

[0081] In this embodiment, the wireless synchronization test device for zinc oxide surge arresters also includes a power module to power each module, which uses a rechargeable battery or an external power supply.

[0082] Rechargeable batteries are suitable for field environments without external power sources, improving the portability and flexibility of the device; external power sources are suitable for long-term testing scenarios, ensuring stable power supply; a unified power module avoids the chaos of individual power supply to each module, reduces the difficulty of power management, and at the same time ensures stable power supply voltage for each module, reducing measurement errors caused by voltage fluctuations.

[0083] The power module can use a rechargeable lithium battery or a solar power unit;

[0084] The power module is detachably connected to the distributed detection unit via a magnetic interface.

[0085] The distance between the edge computing terminal and the distributed detection unit is ≤300 meters, and there is no physical electrical connection between the two.

[0086] This utility model discloses a wireless synchronization testing device for zinc oxide surge arresters, relating to the field of power equipment testing technology. The device includes multiple distributed testing units, a satellite clock synchronization module, an edge computing terminal, and a wireless communication module. The distributed testing units collect current and voltage signals from the zinc oxide surge arrester; the satellite clock synchronization module synchronizes the time of each testing unit; the edge computing terminal processes and analyzes the collected data; and the wireless communication module enables wireless data transmission between modules. This device adopts a fully wireless sampling scheme, eliminating the need for extensive wiring, improving on-site operational efficiency, reducing safety risks, and meeting the needs of substation digitalization development.

[0087] This utility model's wireless synchronous testing device for zinc oxide surge arresters adopts a distributed live-line detection structure, combining satellite clock synchronization technology and wireless current and voltage sampling technology to construct a complete and efficient testing system. Distributed detection units collect data in a decentralized manner, reducing the risk of single-point failures; satellite clock synchronization ensures consistent data sampling time, improving measurement accuracy; and fully wireless sampling completely solves many problems caused by lead wires.

[0088] Edge computing terminals integrate data receiving, processing, display, storage, and remote control functions. They can not only process and analyze collected data in real time, but also store historical data for long-term trend analysis, enabling remote operation and improving the convenience and intelligence of testing. These integrated functions work together to expand the application scenarios and practicality of testing devices.

[0089] To address the problems of numerous leads, inconvenient operation, high safety risks, and insufficient application of wireless technology in existing zinc oxide surge arrester testing, this utility model's wireless synchronous testing device for zinc oxide surge arresters effectively reduces on-site wiring workload, lowers safety risks, and improves operational efficiency through technological innovation.

[0090] Improved satellite synchronization reliability: The wired / wireless dual-mode synchronization mechanism adapts to complex substation environments, and ±1μs accuracy ensures the accuracy of phase analysis;

[0091] Phase compensation is traceable: the coefficient k is calibrated by a standard signal source to eliminate measurement deviations caused by individual differences in equipment;

[0092] Enhanced communication robustness: The triple protection of spread spectrum, frequency hopping and verification mechanisms reduces the bit error rate of wireless transmission in environments with strong electromagnetic interference.

[0093] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the devices, apparatuses, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0094] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this utility model, and these modifications or substitutions should all be covered within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A wireless synchronization testing device for zinc oxide surge arresters, characterized in that, The wireless synchronization testing device for zinc oxide surge arresters includes: Multiple distributed detection units are used to collect current and voltage signals from different zinc oxide surge arresters. A satellite clock synchronization module is connected to each of the distributed detection units and is used to provide a unified time reference for each of the distributed detection units. The edge computing terminal is connected to each of the distributed detection units via a wireless communication module, and is used to receive and process the signals collected by each of the distributed detection units. The wireless communication module is connected to both the distributed detection unit and the edge computing terminal to enable wireless data transmission between the distributed detection unit and the edge computing terminal.

2. The wireless synchronous testing device for zinc oxide surge arresters according to claim 1, characterized in that, The distributed detection unit includes a current sampling module and a voltage sampling module. The current sampling module is used to collect the current signal of the zinc oxide surge arrester, and the voltage sampling module is used to collect the voltage signal of the zinc oxide surge arrester. Both the current sampling module and the voltage sampling module are connected to the satellite clock synchronization module and are connected to the edge computing terminal through the wireless communication module.

3. The wireless synchronization testing device for zinc oxide surge arresters according to claim 2, characterized in that, The current sampling module and the voltage sampling module are integrated in the same housing, which is installed at the corresponding detection position of the zinc oxide surge arrester.

4. The wireless synchronization testing device for zinc oxide surge arresters according to claim 1, characterized in that, The satellite clock synchronization module adopts BeiDou or GPS satellite clock synchronization technology, and the satellite clock synchronization module is connected to each of the distributed detection units via wired or wireless means.

5. The wireless synchronization testing device for zinc oxide surge arresters according to claim 1, characterized in that, The wireless communication module adopts wireless communication technology based on LoRa, WiFi or Bluetooth. The wireless communication module includes a first communication submodule disposed on the distributed detection unit and a second communication submodule disposed on the edge computing terminal. The first communication submodule and the second communication submodule perform wireless data transmission.

6. The wireless synchronization testing device for zinc oxide surge arresters according to claim 1, characterized in that, The edge computing terminal includes a data receiving module, a data processing module, and a data display module. The data receiving module is connected to the wireless communication module and is used to receive the collected signals. The data processing module is connected to the data receiving module and is used to analyze and process the received signals. The data display module is connected to the data processing module and is used to display the processed results, including waveforms, data parameters, and test conclusions.

7. The wireless synchronization testing device for zinc oxide surge arresters according to claim 6, characterized in that, The edge computing terminal further includes a historical data storage module, which is connected to the data processing module and used to store processed historical test data; and / or, The data processing module can perform phase compensation processing on the acquired current and voltage signals, and the data display module can display the relevant parameters after phase compensation.

8. The wireless synchronization testing device for zinc oxide surge arresters according to claim 1, characterized in that, The wireless synchronous testing device for zinc oxide surge arresters also includes a remote control module, which is connected to the edge computing terminal through the wireless communication module and supports remote start / stop testing and parameter configuration.

9. The wireless synchronization testing device for zinc oxide surge arresters according to claim 1, characterized in that, The number of distributed detection units is configured according to the number of zinc oxide surge arresters in the substation, and each zinc oxide surge arrester corresponds to at least one distributed detection unit.

10. The wireless synchronization testing device for zinc oxide surge arresters according to claim 1, characterized in that... The wireless synchronization testing device for zinc oxide surge arresters also includes a power module, which is connected to the distributed detection unit, the satellite clock synchronization module, the edge computing terminal, and the wireless communication module to provide power to each module. The power module uses a rechargeable battery or an external power supply.

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