Intelligent high-voltage circuit breaker contact wear monitoring device

Abstract

The utility model discloses a kind of intelligent high-voltage circuit breaker contact wear monitoring devices, belong to electric power equipment monitoring technical field.The intelligent high-voltage circuit breaker contact wear monitoring device provided by the utility model can realize the online real-time monitoring of high-voltage circuit breaker contact wear state, avoid the power supply interruption caused by equipment outage, specifically: the high-voltage circuit breaker is physically integrated with sensor module, realize the spatial coupling of equipment state and monitoring data;Through the data fusion analysis of current sensor and arc detection sensor by main control processing module, wear state data is obtained;Power supply module provides independent power supply for sensor, main control module and communication unit, ensures the continuous operation of monitoring system in high-voltage environment;Wireless communication module cooperates with antenna, wear state data is remotely transmitted to operation and maintenance platform, realizes non-contact real-time monitoring, avoids the equipment outage risk brought by artificial inspection.

Description

Technical Field

[0001] This utility model relates to the field of power equipment monitoring technology, specifically to an intelligent high-voltage circuit breaker contact wear monitoring device. Background Technology

[0002] High-voltage circuit breakers, as core control equipment in the power transmission and distribution system, bear the critical functions of circuit switching control and fault current isolation. Their operational reliability directly affects the safety and stability of the entire power system. During the operation of a high-voltage circuit breaker, the contacts are the core components for current switching. However, during frequent opening and closing operations or when interrupting large currents, a strong electric arc is generated between the contacts due to a sudden increase in electric field strength. This arc possesses extremely high temperature and energy, causing continuous erosion and wear on the contact surface material, leading to a reduction in contact area and an increase in surface roughness, thus affecting the conductivity and mechanical life of the high-voltage circuit breaker. If contact wear is not detected and addressed in a timely manner, as the wear intensifies, it will lead to faults such as increased contact resistance and localized overheating. In severe cases, it may even cause contact welding and equipment burnout, resulting not only in power supply interruptions but also potentially triggering major safety accidents such as fires and explosions, posing a serious threat to the operational safety of the power system.

[0003] Currently, the power industry primarily relies on periodic manual inspections or post-power outage disassembly for monitoring the contact condition of high-voltage circuit breakers. This involves maintenance personnel conducting visual inspections and electrical parameter measurements of the circuit breakers according to pre-set schedules, or disassembling the cabinet after equipment shutdown to directly observe the contacts. This traditional approach has the following problems: Firstly, manual inspections struggle to capture dynamic wear processes, resulting in delayed monitoring information. Secondly, power outage disassembly not only increases maintenance workload and prolongs equipment downtime but may also introduce new equipment hazards during the disassembly process, leading to insufficient accuracy and timeliness in assessing contact wear conditions, thus failing to meet the needs of lean operation and maintenance in the power system.

[0004] Therefore, improving the accuracy and timeliness of contact wear condition assessment has become a technical challenge that urgently needs to be overcome by those skilled in the art. Summary of the Invention

[0005] The purpose of this invention is to provide an intelligent high-voltage circuit breaker contact wear monitoring device to overcome the problems of insufficient accuracy and timeliness in the assessment of high-voltage circuit breaker contact wear status in the prior art.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution: This utility model provides an intelligent high-voltage circuit breaker contact wear monitoring device, including a monitoring device body, an antenna, a high-voltage circuit breaker, a current sensor, an arc detection sensor, a power supply module, a main control processing module, and a wireless communication module. The high-voltage circuit breaker is installed inside the monitoring device body. A current sensor is installed at the output terminal of the high-voltage circuit breaker. The arc detection sensor is located below the current sensor. The power supply module is installed inside the monitoring device body. The main control processing module is electrically connected to both the power supply module and the wireless communication module. The wireless communication module is electrically connected to the antenna. Current sensors are used to monitor the current changes of the contacts of high-voltage circuit breakers in real time during the opening and closing process; arc detection sensors are used to capture the intensity and duration of the arc at the moment of opening of the high-voltage circuit breaker.

[0007] A further improvement of this utility model is that it also includes an alarm output module and a buzzer alarm, wherein the alarm output module is electrically connected to the main control processing module, and the buzzer alarm is electrically connected to the alarm output module.

[0008] A further improvement of this utility model is that it also includes a signal conditioning module, which is electrically connected to the main control processing module, the current sensor and the arc detection sensor respectively, and is used to filter, isolate and amplify the raw signals output by the current sensor and the arc detection sensor before transmitting them to the main control processing module.

[0009] A further improvement of this utility model is that it also includes an information storage and analysis module, which is electrically connected to the main control processing module and is used to store monitoring data.

[0010] A further improvement of this utility model is that a switch door is installed at the front of the monitoring device body, and a ventilation opening is provided on the right side of the monitoring device body.

[0011] A further improvement of this invention is that the monitoring device body is provided with a buckle for fixing the antenna.

[0012] A further improvement of this invention is that a control panel is installed on the right side of the monitoring device body, and the control panel is equipped with a display screen.

[0013] A further improvement of this utility model is that it also includes a spare cable storage box, which is installed below the control panel. The interior of the spare cable storage box is provided with cable reel clips or cable trays for classifying and storing cables.

[0014] A further improvement of this utility model is that the spare cable storage box adopts a hinged cover structure.

[0015] A further improvement of this invention is that the main control processing module is electrically connected to the power supply module via a cable, and the cable is a multi-core cable used to realize power transmission and signal transmission between the power supply module and the main control processing module.

[0016] Compared with the prior art, the positive and progressive effects of this utility model are as follows: The intelligent high-voltage circuit breaker contact wear monitoring device provided by this utility model can realize online real-time monitoring of the wear status of high-voltage circuit breaker contacts, avoiding power supply interruptions caused by equipment shutdown. Specifically: the high-voltage circuit breaker and sensor module are physically integrated to achieve spatial coupling between equipment status and monitoring data; the main control processing module performs fusion analysis on the data from the current sensor and arc detection sensor to obtain wear status data; the power supply module provides independent power supply for the sensors, main control module and communication unit to ensure continuous operation of the monitoring system in a high-voltage environment; the wireless communication module works with the antenna to remotely transmit the wear status data to the operation and maintenance platform, realizing non-contact real-time monitoring and avoiding the risk of equipment shutdown caused by manual inspection. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and constitute a part of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0018] Figure 1 This is a schematic diagram of the overall structure of an intelligent high-voltage circuit breaker contact wear monitoring device according to this utility model.

[0019] Figure 2 This is a schematic diagram of the internal structure of an intelligent high-voltage circuit breaker contact wear monitoring device according to this utility model.

[0020] Figure 3 This is a rear view of an intelligent high-voltage circuit breaker contact wear monitoring device according to this utility model.

[0021] The components include: 1. Monitoring device body; 2. Opening / closing door; 3. Ventilation opening; 4. Spare cable storage box; 5. Control panel; 6. Display screen; 7. Antenna; 8. Clip; 9. Buzzer alarm; 10. High-voltage circuit breaker; 11. Current sensor; 12. Arc detection sensor; 13. Power supply module; 14. Main control processing module; 15. Signal conditioning module; 16. Alarm output module; 17. Wireless communication module; 18. Information storage and analysis module; and 19. Cable. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of the embodiments of this utility model, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use, they are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the utility model. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0027] In the description of the embodiments of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] The present invention will be further described in detail below with reference to the accompanying drawings. The description is intended to explain the present invention and not to limit it.

[0029] A smart high-voltage circuit breaker contact wear monitoring device includes a monitoring device body 1, an antenna 7, a high-voltage circuit breaker 10, a current sensor 11, an arc detection sensor 12, a power supply module 13, a main control processing module 14, and a wireless communication module 17. The high-voltage circuit breaker 10 is installed inside the monitoring device body 1. The current sensor 11 is installed at the output terminal of the high-voltage circuit breaker 10. The arc detection sensor 12 is located below the current sensor 11. The power supply module 13 is installed inside the monitoring device body 1. The main control processing module 14 is electrically connected to both the power supply module 13 and the wireless communication module 17. The wireless communication module 17 is electrically connected to the antenna 7. The current sensor 11 is used to monitor the current change of the contacts of the high-voltage circuit breaker 10 in real time during the switching process; the arc detection sensor 12 is used to capture the arc intensity and duration of the high-voltage circuit breaker 10 at the moment of switching.

[0030] The monitoring device body 1 refers to the housing structure that carries the high-voltage circuit breaker 10 and the monitoring components. It can be cast from metal alloy materials and is used to achieve physical integration of the sensor and the high-voltage circuit breaker 10. The current sensor 11 refers to an electromagnetic induction device installed at the outgoing end of the circuit breaker, such as a Rogowski coil or a Hall sensor, used to extract the current waveform characteristics when the contacts operate. The arc detection sensor 12 refers to an ultraviolet photosensitive element arranged in the contact breaking area, such as a photodiode array, used to detect the arc radiation intensity. The power supply module 13 refers to a DC power supply unit with isolation function, such as using an AC / DC conversion circuit and a battery pack, to ensure circuit safety under high-voltage conditions. The main control processing module 14 refers to a microcontroller with built-in data processing algorithms, such as an ARM Cortex-M series chip, used to perform data fusion and wear assessment. The wireless communication module 17 refers to a communication unit that supports remote transmission protocols, such as a LoRa or NB-IoT module, used to send monitoring data to the operation and maintenance platform.

[0031] This solution enables real-time online monitoring of the wear status of the contacts of the high-voltage circuit breaker 10, avoiding power supply interruptions caused by equipment shutdowns. Specifically: a closed-loop monitoring system is constructed through multi-sensor collaboration and wireless communication technology. The monitoring device body 1 serves as an integrated carrier, physically integrating the high-voltage circuit breaker 10 with the sensor modules to achieve spatial coupling between equipment status and monitoring data. The current sensor 11 is directly installed at the outgoing terminal of the circuit breaker, capturing the changes in current waveform during the switching process to reflect the trend of contact resistance changes. The arc detection sensor 12 is located below the current sensor 11, performing gradient detection on the arc energy generated at the moment of opening, quantifying the degree of contact surface ablation through arc intensity and duration. The main control processing module 14 fuses and analyzes the data from the two types of sensors to obtain wear status data. The power supply module 13 provides independent power to the sensors, main control module, and communication unit, ensuring continuous operation of the monitoring system under high-voltage conditions. The wireless communication module 17, in conjunction with the antenna 7, remotely transmits the wear status data to the operation and maintenance platform, achieving non-contact real-time monitoring and avoiding the risk of equipment shutdown caused by manual inspections.

[0032] Preferably, the system also includes an alarm output module 16 and a buzzer alarm 9, wherein the alarm output module 16 is electrically connected to the main control processing module 14, and the buzzer alarm 9 is electrically connected to the alarm output module 16.

[0033] A tiered alarm triggering mechanism is constructed by adding an alarm output module 16 between the main control processing module 14 and the buzzer alarm 9. Specifically, the main control processing module 14 analyzes in real time the contact current change data and arc intensity data collected by the current sensor 11 and the arc detection sensor 12. When the contact wear exceeds a preset threshold, the main control processing module 14 sends a trigger signal to the alarm output module 16. After receiving the trigger signal, the alarm output module 16 converts the low-level logic signal into a high-voltage drive signal through an internal isolation circuit, activating the oscillation circuit inside the buzzer alarm 9, causing the buzzer to produce a continuous high-decibel alarm sound. The acoustic signal emitted by the buzzer alarm 9 can penetrate the equipment cabinet and cover the on-site operating area, effectively shortening the time window for maintenance personnel from fault detection to on-site handling. It can detect abnormal contact status in real time without relying on regular inspections. At the same time, signal isolation is achieved through the independent alarm output module 16 to avoid false alarms caused by electromagnetic interference from the power system.

[0034] Preferably, it also includes a signal conditioning module 15, which is electrically connected to the main control processing module 14, the current sensor 11 and the arc detection sensor 12 respectively. The signal conditioning module 15 is used to filter, isolate and amplify the raw signals output by the current sensor 11 and the arc detection sensor 12 and then transmit them to the main control processing module 14.

[0035] The filtering process involves suppressing interference components in the signal using specific frequency response characteristics. This can be achieved using a Butterworth low-pass filter, with its cutoff frequency set above the power frequency harmonics to eliminate high-frequency noise. Isolation involves blocking the conduction path of common-mode interference using electrical isolation devices, such as optocouplers or magnetically isolated amplifiers, to eliminate signal distortion caused by ground potential differences. Amplification involves adjusting the gain of the weak signal output from the sensor, typically using a programmable gain instrumentation amplifier whose gain can be adaptively adjusted based on the dynamic range of the sensor's output signal.

[0036] This solution establishes a signal processing link between the sensor signal acquisition and the main control processing module 14 by adding a signal conditioning module 15. The signal conditioning module 15 is directly electrically connected to the current sensor 11 and the arc detection sensor 12, realizing the synchronous acquisition and unified processing of the output signals of the two types of sensors. This effectively eliminates high-frequency noise and common-mode interference in the sensor output signals, avoids feature extraction errors caused by signal attenuation, and enables the main control processing module 14 to accurately calculate the wear degree of the contacts based on high-fidelity current and arc data. Specifically: The current signal collected by the current sensor 11 and the voltage signal acquired by the arc detection sensor 12 first enter the signal conditioning module 15. In the filtering stage, high-frequency electromagnetic interference and power frequency harmonic components are filtered out, and characteristic waveforms within the effective signal frequency band are retained. In the isolation stage, the sensor signal is electrically isolated from the back-end circuit through an optocoupler to block the influence of common-mode voltage on the signal transmission channel. In the amplification stage, the amplitude of the filtered and isolated pure signal is increased to reach the standard input level range of the analog-to-digital converter of the main control processing module 14. The standardized signal after the above processing is transmitted to the main control processing module 14 for calculation of contact wear characteristics.

[0037] Preferably, it also includes an information storage and analysis module 18, which is electrically connected to the main control processing module 14 and is used to store monitoring data.

[0038] By adding an electrical connection architecture between the information storage and analysis module 18 and the main control processing module 14, a complete monitoring data storage system is constructed. The information storage and analysis module 18 enables full storage of continuous monitoring data, establishing a traceable data chain for the contact wear process. This allows for the reconstruction of the contact wear development trajectory based on complete historical data during offline analysis, overcoming the data limitations of traditional sampling inspection methods. Specifically, the information storage and analysis module 18 directly receives real-time monitoring data from the main control processing module 14, and can completely record the contact on / off current change curve collected by the current sensor 11 and the arc intensity time-series data captured by the arc detection sensor 12, forming a full life-cycle data chain for the contact wear process. This module can use structured storage technology to associate and store dynamic monitoring data with operating parameters such as timestamps and number of operations, providing a traceable original data foundation for subsequent contact wear trend analysis. The stored time-series data supports retrospective calculation of key parameters such as contact wear rate and arc energy accumulation effect in offline conditions, thereby overcoming the limitation of traditional manual sampling inspections in obtaining continuous operating data and providing data support for predictive maintenance decisions.

[0039] Preferably, a switch door 2 is installed at the front of the monitoring device body 1, and a ventilation opening 3 is provided on the right side of the monitoring device body 1.

[0040] By incorporating the switch door 2 and vent 3, the maintainability and heat dissipation performance of the monitoring device are optimized. The switch door 2, installed at the front of the monitoring device body 1, allows maintenance personnel to quickly inspect or replace internal components without disassembling the entire device, solving the problem of cumbersome maintenance operations caused by the enclosed structure of traditional monitoring devices. A vent 3 is located on the right side of the monitoring device body 1, accelerating internal heat dissipation through air convection, reducing the operating temperature of electronic components such as the power supply module 13 and the main control processing module 14, and preventing false alarms or equipment performance degradation caused by high temperatures. The location of the vent 3 on the right side avoids interference with the front switch door 2 structure and coordinates with the internal airflow path of the device, improving heat dissipation efficiency. The combined design of the switch door 2 and vent 3 balances equipment protection and functional reliability, simplifying maintenance procedures while ensuring the long-term stability of the monitoring device.

[0041] Preferably, the monitoring device body 1 is provided with a buckle 8 for fixing the antenna 7.

[0042] By setting a snap-fit ​​structure 8 on the main body 1 of the monitoring device, the antenna 7 is stably installed in a high-voltage and strong electromagnetic interference environment, preventing communication interruption caused by mechanical vibration. At the same time, it simplifies the maintenance operation process of the antenna 7 and reduces the risk of monitoring data loss caused by the failure of the fixing structure.

[0043] Preferably, a control panel 5 is installed on the right side of the monitoring device body 1, and the control panel 5 is equipped with a display screen 6.

[0044] By integrating the control panel 5 on the right side of the monitoring device body 1 and setting up a display screen 6 on the panel, a human-machine interface is constructed, enabling maintenance personnel to obtain real-time data on contact wear status directly through the display screen 6 without interrupting equipment operation. This achieves localized real-time display of monitoring data, avoids monitoring delays caused by manual inspection intervals or equipment shutdowns, and eliminates safety hazards caused by disassembly operations.

[0045] Preferably, it also includes a spare cable storage box 4, which is installed below the control panel 5. The spare cable storage box 4 has a cable reel or cable tray inside for classifying and storing cables.

[0046] By installing a spare cable storage box 4 below the control panel 5, spare cables can be centrally stored and quickly accessed, avoiding space occupation caused by cables being scattered haphazardly. The cable clips or cable trays inside the storage box use physical separation structures to classify and secure different types of cables. This prevents cables from becoming tangled, causing sheath wear or loosening of connectors, and allows maintenance personnel to quickly identify and retrieve the required cables. This effectively improves the standardization of cable storage and the convenience of maintenance operations. Furthermore, by avoiding the risk of short circuits caused by disorderly cable stacking, it enhances the safety of equipment operation.

[0047] Preferably, the spare cable storage box 4 adopts a hinged cover structure.

[0048] By adopting a hinged cover structure design for the spare cable storage box 4, the cable storage box can be opened and closed with one hand during maintenance, reducing the time spent on operation steps. At the same time, the stable closed contact surface maintains the cleanliness of the inside of the box, preventing the insulation performance of the cables from deteriorating due to dust or moisture.

[0049] Preferably, the main control processing module 14 is electrically connected to the power supply module 13 via a cable 19. The cable 19 is a multi-core cable 19, used to realize power transmission and signal transmission between the power supply module 13 and the main control processing module 14.

[0050] By using a multi-core cable 19 as the connection medium between the main control processing module 14 and the power supply module 13, an integrated connection between the two modules is achieved. Power transmission and signal interaction are completed through the same physical channel, avoiding space occupation and signal crosstalk problems caused by multiple cable arrangements. This ensures the real-time acquisition and stable transmission of contact wear monitoring data, providing reliable hardware support for the continuous monitoring of the high-voltage circuit breaker 10's operating status. Specifically, the main control processing module 14, as the data processing core, needs to continuously receive real-time data from the current sensor 11 and the arc detection sensor 12, and transmit the analysis results externally through the wireless communication module 17. Therefore, a stable power supply is the foundation for its continuous operation. Connecting the power supply module 13 through the multi-core cable 19 not only provides the power required by the main control processing module 14, but also transmits control signals or status feedback signals through the independent core wires in the same cable 19, avoiding the complex wiring and interface redundancy problems caused by the separation of power lines and signal lines in traditional solutions. The multi-core cable 19's structural design effectively reduces the number of cables and the impact of electromagnetic interference on signal transmission. At the same time, it enables synchronous transmission of power and signals through a unified physical channel, improving system integration and anti-interference capabilities, and providing a hardware foundation for real-time monitoring of contact wear status.

[0051] See Figures 1-3 In a specific embodiment of this utility model, an intelligent high-voltage circuit breaker contact wear monitoring device is provided, including a monitoring device body 1, a current sensor 11, an arc detection sensor 12, a signal conditioning module 15, and a wireless communication module 17. A high-voltage circuit breaker 10 is installed inside the front of the monitoring device body 1. The current sensor 11 is installed at the connection point of the high-voltage circuit breaker 10. The arc detection sensor 12 is installed below the current sensor 11. A power supply module 13 is installed at the rear inside the monitoring device body 1. A main control processing module 14 is electrically connected to the top of the power supply module 13 via a cable 19. The signal conditioning module 15 is electrically connected to the left side of the main control processing module 14. An alarm output module 16 is electrically connected above the main control processing module 14, a wireless communication module 17 is electrically connected above the main control processing module 14, an information storage and analysis module 18 is electrically connected to the right side of the main control processing module 14, a switch door 2 is installed at the front of the monitoring device body 1, a ventilation opening 3 is provided on the right side of the monitoring device body 1, a control panel 5 is installed on the right side of the monitoring device body 1, a display screen 6 is provided on the control panel 5, a spare cable storage is installed below the control panel 5, an antenna 7 is installed at the rear right side of the monitoring device body 1, a buckle 8 is installed between the antenna 7 and the monitoring device body 1, and a buzzer alarm 9 is installed above the monitoring device body 1.

[0052] By rationally arranging and integrating multiple functional modules within the monitoring device body 1, a complete high-voltage circuit breaker 10 contact wear monitoring and remote reporting system is constructed. Specifically, the high-voltage circuit breaker 10, as the monitored object, has a current sensor 11 installed at its outgoing terminal to monitor the current changes of the contacts during the switching process in real time. Below the current sensor 11, an arc detection sensor 12 is installed to capture parameters such as the arc intensity and duration at the moment the high-voltage circuit breaker 10 is switched on. The raw signals output by the above sensors are transmitted to the signal conditioning module 15 via a cable 19 laid inside the monitoring device. This module performs preliminary filtering, isolation, and amplification of the analog signals to improve signal quality and avoid interference. The conditioned data is then transmitted to the main control processing module 14. This module analyzes and processes the real-time data using a built-in microprocessor and judgment algorithm, and compares it with the set contact wear threshold. Once the main control processing module 14 determines that there is abnormal contact wear, it controls the buzzer 9 to issue an audible and visual alarm through the electrical connection between the main control processing module 14 and the alarm output module 16, alerting on-site maintenance personnel. Meanwhile, the main control processing module 14 is also electrically connected to the wireless communication module 17, encapsulating the analysis results into data packets and transmitting them wirelessly via antenna 7 to achieve remote uploading of fault information. A clip 8 is used to fix antenna 7, ensuring communication stability. The entire system is supported by a stable power supply module 13 located at the rear, and provides power and signal transmission channels to each module via a multi-core cable 19. The control panel 5, in conjunction with the display screen 6, is used to display real-time operating data and alarm status, giving the equipment excellent human-machine interaction capabilities.

[0053] To improve the efficiency of cable 19 management during on-site maintenance, a spare cable storage box 4 is installed on the right side of the monitoring device body 1. This structure is flush against the side wall of the cabinet and is fixedly installed, without occupying internal space. The spare cable storage box 4 features a hinged cover for easy opening and closing and operation. It has cable clips or cable trays inside for categorizing and storing spare communication cables, power cables, and other commonly used jumpers. During maintenance or emergency repairs, maintenance personnel can open the switch door 2 at the front of the device, read the fault information displayed on the control panel 5, and directly retrieve the required cable 19 from the spare cable storage box 4 for replacement, avoiding the cumbersome process of searching for or carrying cables separately as in traditional methods. Simultaneously, the ventilation opening 3 is located on the right side of the device body, which helps dissipate heat from internal modules (such as power modules and MCUs) under high load conditions, ensuring a suitable ambient temperature for the stored cables and preventing aging of the cable insulation layer due to high temperatures.

[0054] Finally, it should be noted that the embodiments listed above are merely one or more specific manifestations of the technical solution of this utility model. Their purpose is to clearly illustrate the concept, principle, and application of this utility model through specific examples, and is by no means intended to limit the scope of protection of this utility model to these specific embodiments. In fact, the true value of this utility model lies in its proposed technical ideas and innovations, rather than its manifestations or implementation methods.

[0055] For those skilled in the art, after thoroughly reading and understanding the technical solution of this utility model, they are fully capable of making various changes, modifications, or equivalent substitutions to the specific embodiments of the utility model based on their own professional knowledge and skills. These changes may include, but are not limited to: adjusting the range of technical parameters, optimizing the algorithm flow to improve efficiency, and replacing some technical components to achieve better compatibility or reduce costs. As long as these modified technical solutions substantially retain the technical features claimed by the original utility model, that is, they can still achieve the core functions and effects of this utility model, then these changes should be considered to fall within the scope of protection of the pending claims of this utility model.

[0056] Furthermore, with the continuous progress and development of technology, new technical means and methods are constantly emerging, which provides ample space for the further improvement and perfection of this utility model. Therefore, the scope of protection of this utility model should also include reasonable and foresightful improvements and extensions based on existing technology. As long as these improvements and extensions do not deviate from the basic principles and core concept of this utility model, they should be regarded as equivalents of this utility model and are equally protected by patent rights.

Claims

1. A smart high-voltage circuit breaker contact wear monitoring device, characterized in that, The device includes a monitoring device body (1), an antenna (7), a high-voltage circuit breaker (10), a current sensor (11), an arc detection sensor (12), a power supply module (13), a main control processing module (14), and a wireless communication module (17). The monitoring device body (1) is equipped with a high-voltage circuit breaker (10), and a current sensor (11) is installed at the output end of the high-voltage circuit breaker (10). The arc detection sensor (12) is located below the current sensor (11). The power supply module (13) is installed inside the monitoring device body (1). The main control processing module (14) is electrically connected to the power supply module (13) and the wireless communication module (17). The wireless communication module (17) is electrically connected to the antenna (7). A current sensor (11) is used to monitor the current change of the contacts of the high-voltage circuit breaker (10) during the opening and closing process in real time; an arc detection sensor (12) is used to capture the arc intensity and duration of the high-voltage circuit breaker at the moment of opening.

2. The intelligent high-voltage circuit breaker contact wear monitoring device according to claim 1, characterized in that, It also includes an alarm output module (16) and a buzzer alarm (9), wherein the alarm output module (16) is electrically connected to the main control processing module (14), and the buzzer alarm (9) is electrically connected to the alarm output module (16).

3. The intelligent high-voltage circuit breaker contact wear monitoring device according to claim 1, characterized in that, It also includes a signal conditioning module (15), which is electrically connected to the main control processing module (14), the current sensor (11) and the arc detection sensor (12) respectively. It is used to filter, isolate and amplify the original signals output by the current sensor (11) and the arc detection sensor (12) and then transmit them to the main control processing module (14).

4. The intelligent high-voltage circuit breaker contact wear monitoring device according to claim 1, characterized in that, It also includes an information storage and analysis module (18), which is electrically connected to the main control processing module (14) and is used to store monitoring data.

5. The intelligent high-voltage circuit breaker contact wear monitoring device according to claim 1, characterized in that, A switch door (2) is installed in front of the main body (1) of the monitoring device, and a ventilation opening (3) is provided on the right side of the main body (1) of the monitoring device.

6. The intelligent high-voltage circuit breaker contact wear monitoring device according to claim 1, characterized in that, The monitoring device body (1) is provided with a buckle (8) for fixing the antenna (7).

7. The intelligent high-voltage circuit breaker contact wear monitoring device according to claim 1, characterized in that, The monitoring device body (1) is equipped with a control panel (5) on the right side, and the control panel (5) is equipped with a display screen (6).

8. The intelligent high-voltage circuit breaker contact wear monitoring device according to claim 1, characterized in that, It also includes a spare cable storage box (4), which is installed below the control panel (5). The spare cable storage box (4) has cable reel clips or cable trays inside for sorting and storing cables.

9. The intelligent high-voltage circuit breaker contact wear monitoring device according to claim 8, characterized in that, The spare cable storage box (4) adopts a hinged cover structure.

10. The intelligent high-voltage circuit breaker contact wear monitoring device according to claim 1, characterized in that, The main control processing module (14) is electrically connected to the power supply module (13) via a cable (19). The cable (19) is a multi-core cable used to realize power transmission and signal transmission between the power supply module (13) and the main control processing module (14).

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