A pole-mounted primary and secondary integrated intelligent circuit breaker

Abstract

The invention discloses a pole-mounted primary and secondary integrated intelligent circuit breaker, which relates to the technical field of pole-mounted circuit breakers. The circuit breaker detects the operating status of the main circuit breaker in real time and generates an early warning signal to ensure the timely execution of fault isolation and protection logic. The signal monitoring module and the stability analysis module evaluate the signal stability of the equipment by calculating the impedance change resistance value and the environmental degradation index of the signal transmission path, and then triggers the intelligent control module to adjust the humidity control unit and the salt spray filter unit, so as to optimize the operation of the equipment in harsh environments. This not only improves the fault detection and protection capabilities of the equipment and reduces the risks caused by signal problems, but also enhances the environmental adaptability and operation stability of the equipment, and significantly improves the safety and reliability of the intelligent distribution network.

Description

Technical Field

[0001] The present invention relates to the technical field of pole-mounted circuit breakers, and in particular to a pole-mounted primary-secondary integrated intelligent circuit breaker. Background Art

[0002] With the continuous improvement of the intelligence level of power systems, the automation equipment of distribution networks has been gradually promoted and applied. Among them, intelligent circuit breakers, as core equipment, have basic functions such as overload protection, short-circuit protection, and leakage protection, and have gradually developed into intelligent equipment with communication, monitoring and remote control functions. In traditional distribution systems, the functions of primary equipment (such as circuit breakers) and secondary equipment (such as protection relays and monitoring modules) are relatively independent, and their communication and collaborative work require additional integration and configuration, which increases the complexity of equipment, high operation and maintenance costs, and makes it difficult to adapt to the development needs of intelligent, modular and lightweight distribution networks in the future.

[0003] In the circuit breakers installed on poles, due to the limitations of space and energy efficiency, it is often necessary to take into account the design of high reliability, high functional integration and low cost. However, most of the pole-mounted circuit breakers on the market are structural models with separated primary and secondary devices, which have the problems of cumbersome installation and complex maintenance. In addition, due to the diversity and lack of compatibility of communication protocols, it is difficult for equipment to interconnect, which is not conducive to the efficient operation and intelligent management of the distribution system.

[0004] The prior art has the following deficiencies:

[0005] In the existing pole-mounted circuit breaker system, when the circuit breaker is operating under extreme environmental conditions (such as high humidity and high salt fog areas), the stability of signal transmission between the primary device and the secondary device is significantly reduced, resulting in the inability of the device to perform fault isolation or protection functions in a timely manner, thereby increasing the risk of power outages and the probability of equipment damage. The root cause of this problem is that the physical interface between the primary device and the secondary device of the traditional pole-mounted circuit breaker is exposed to harsh environments for a long time and is extremely susceptible to corrosion, pollution or mechanical damage. At the same time, due to the lack of effective design for the integration of primary and secondary devices in the existing technology, effective shielding and protection cannot be achieved in the signal transmission path, further exacerbating the severity of the problem. If the above technical problems cannot be effectively solved, it will directly affect the stability and safety of the smart distribution network, especially in some coastal or humid and hot areas. The frequency and scope of this problem will be further expanded, seriously restricting the promotion and application of equipment and the improvement of operation and maintenance efficiency. Summary of the invention

[0006] The object of the present invention is to provide a pole-mounted primary and secondary fusion intelligent circuit breaker to solve the shortcomings of the background technology.

[0007] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a pole-mounted primary-secondary fusion intelligent circuit breaker, comprising a primary equipment module, a secondary equipment module, a sealed integrated structural housing, a signal monitoring module, a signal stability analysis module and an intelligent control module;

[0008] A primary equipment module, used to perform overload protection, short circuit protection and fault isolation of the power system, the primary equipment module comprising a main circuit breaker unit;

[0009] The main circuit breaker unit is used to detect the operating status data of contact wear and mechanical jam components in real time, and generate an early warning signal through self-diagnosis results and transmit it to the secondary equipment module;

[0010] A secondary equipment module is integrated with the primary equipment module, comprising a signal acquisition unit, a communication unit and a control unit, and is used to collect power operation parameters, execute fault protection logic, and realize remote communication;

[0011] The control unit is connected to the main circuit breaker unit and is used to execute fault isolation and protection logic based on the operating status data of the components collected in real time;

[0012] A sealed integrated structural shell covers the primary device module and the secondary device module to provide structural protection and environmental isolation. A signal transmission shielding channel is provided inside the shell to shield external electromagnetic interference;

[0013] A signal monitoring module, integrated inside the housing and connected to the communication unit, for real-time monitoring of the entire process of signal transmission, and calculating the impedance change resistance value of the signal transmission path and the environmental degradation index of the signal interface;

[0014] A signal stability analysis module is used to evaluate the signal transmission stability between the primary device and the secondary device based on the calculated impedance change resistance value of the signal transmission path and the environmental degradation index of the signal interface;

[0015] An intelligent control module, including an anti-corrosion coating, a humidity control unit and a salt spray filter unit, is arranged inside and outside the housing, and is used to intelligently control the humidity control unit and the salt spray filter unit according to an evaluation result of signal transmission stability between the primary device and the secondary device;

[0016] Wherein, the humidity control unit is used to dynamically adjust the humidity level inside the equipment, and the salt spray filter unit is used to switch the operating mode of the external air inlet and the heat dissipation exhaust port.

[0017] Preferably, in the signal monitoring module, the calculation method of the impedance change resistance value of the signal transmission path is:

[0018] The input signal of the transmission path is collected by a spectrum analyzer and reflected signal , calculate the input signal power , represents the input power of the transmission path, which is obtained by measuring the effective power output by the signal source. The formula is: ; T is the signal period, calculate the power loss , the power loss caused by impedance mismatch in the transmission path is calculated as: ; Use an impedance analyzer to measure the impedance value Z(f) of the signal path in the range of fmin to fmax, where fmin is the lowest frequency of the signal and fmax is the highest frequency of the signal. Reflecting the bandwidth range of the transmission path, calculate ΔZ(f), the expression is: ; is the maximum impedance value in the path, is the minimum impedance value in the path, which is obtained by statistically calculating the impedance measurement value Z(f) at each frequency point, and calculating the impedance resistance value. The expression is: ; In the formula, It is the value of the ability to resist impedance changes.

[0019] Preferably, in the signal monitoring module, the calculation method of the environmental degradation index of the signal interface is:

[0020] Indicators reflecting the environment around the interface are collected in real time, including humidity Ht, salt spray concentration St, and temperature Tt. Performance parameters of the signal interface are measured regularly, including contact resistance Rt and insulation resistance It. Environmental data and performance data are normalized to the range of [0,1]. The normalization formula is: ; is the normalized data point value, is the original data value, including Ht, St, Tt, Rt, It, xmin and xmax are the minimum and maximum values ​​of the historical data, and the environmental degradation value at the current moment is calculated. The expression is: ; In the formula, is the environmental degradation value at the current moment, is the normalized data value at the current moment, α is the smoothing weight coefficient, which determines the weight of the current data and historical data, and the initial value The mean of the normalized data is set, and the environmental degradation index is obtained by weighted summation of the environmental degradation values ​​within N fixed time intervals.

[0021] Preferably, in the signal stability analysis module, the signal transmission stability between the primary device and the secondary device is evaluated according to the calculated impedance change resistance value of the signal transmission path and the environmental degradation index of the signal interface, specifically:

[0022] The impedance resistance value and the environmental degradation index are normalized, and the signal transmission stability coefficient between the primary device and the secondary device is calculated based on the normalized impedance resistance value and the environmental degradation index.

[0023] Preferably, the acquired signal transmission stability coefficient between the primary device and the secondary device is compared with a stability reference threshold value pre-set according to historical data; if the signal transmission stability coefficient between the primary device and the secondary device is greater than or equal to the pre-set stability reference threshold value, it means that the signal transmission stability between the primary device and the secondary device is high, and the signal transmission stability between the primary device and the secondary device is classified as stable transmission; if the signal transmission stability coefficient between the primary device and the secondary device is less than the pre-set stability reference threshold value, it means that the signal transmission stability between the primary device and the secondary device is low, and the signal transmission stability between the primary device and the secondary device is classified as unstable transmission.

[0024] Preferably, in the intelligent control module, the humidity control unit and the salt spray filter unit are intelligently controlled according to the evaluation result of the signal transmission stability between the primary device and the secondary device;

[0025] The goal of the humidity control unit is to maintain the humidity inside the equipment within a set safe range. , when the signal transmission stability coefficient S decreases, the operating intensity of the humidity control unit will increase accordingly to quickly reduce the impact of humidity. The control formula is: ; is the operating intensity of the humidity control unit, is the maximum operating intensity of the humidity control unit, S is the signal transmission stability coefficient, ranging from [0,1], It means that the lower the stability coefficient, the more intensively the humidity control unit is operated;

[0026] When S=1: =0; the humidity control unit remains in standby mode and does not need to be operated; when S→0: → ;The humidity control unit operates at maximum intensity, quickly reducing the internal humidity level;

[0027] The operation mode of the salt spray filter unit is realized by controlling the switch of the filter and the working state of the air inlet. The adjustment is based on the stability coefficient S and the external environment salt spray concentration , the calculation expression is: ; is the operating intensity of the salt spray filter unit, is the maximum operating intensity of the salt spray filter unit, To monitor the salt spray concentration of the external environment in real time, The maximum salt spray concentration designed for the salt spray filtration unit;

[0028] When S=1 or =0: =0; the salt spray filter unit maintains low power consumption mode, and the air inlet and exhaust port operate in normal mode; when S→0 or → hour: → The salt spray filtration unit runs at full speed, the filter is in the highest working state, and the operating modes of the external air inlet and exhaust port are switched to isolate salt spray from entering the equipment to the greatest extent.

[0029] Preferably, the humidity control unit and the salt spray filter unit are adjusted, and the intelligent control module is based on the signal transmission stability coefficient S and environmental conditions. The linkage adjustment operation intensity is expressed as: ; In the formula, The overall operating intensity of the intelligent control module. , is the weight coefficient of the humidity control unit and the salt spray filter unit, satisfying .

[0030] In the above technical solution, the technical effects and advantages provided by the present invention are:

[0031] 1. The present invention innovatively solves the problem of reduced signal transmission stability of traditional pole-mounted circuit breakers in extreme environments by integrating a primary device module, a secondary device module, a sealed integrated housing, a signal monitoring module, a signal stability analysis module and an intelligent control module in a pole-mounted primary and secondary fusion intelligent circuit breaker. The signal transmission stability between the primary device and the secondary device is ensured by real-time detection of contact wear, mechanical jamming and other conditions, and by combining the dynamic calculation and stability evaluation of the impedance change resistance value and the environmental degradation index. The intelligent control module adjusts the operating status of the humidity control unit and the salt spray filter unit according to the evaluation results to quickly respond to environmental changes and improve the equipment's anti-interference ability and operational reliability.

[0032] 2. The present invention realizes real-time self-diagnosis and fault protection of equipment through precise signal monitoring and analysis, significantly reducing the risk of power outage and equipment damage caused by signal transmission failure. At the same time, the sealed integrated structure and linkage control design greatly improve the stable operation ability of the equipment in harsh environments such as high humidity and high salt fog, extend the service life of the equipment, reduce maintenance costs, and provide technical guarantee for the reliable operation of the smart distribution network and equipment promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0034] Figure 1 It is a system module diagram of the present invention. DETAILED DESCRIPTION

[0035] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution 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 part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0036] For examples, see Figure 1 As shown, the pole-mounted primary and secondary integrated intelligent circuit breaker described in this embodiment includes a primary equipment module, a secondary equipment module, a sealed integrated structural housing, a signal monitoring module, a signal stability analysis module and an intelligent control module;

[0037] A primary equipment module, used to perform overload protection, short circuit protection and fault isolation of the power system, the primary equipment module comprising a main circuit breaker unit;

[0038] The main circuit breaker unit is used to detect the operating status data of contact wear and mechanical jam components in real time, and generate an early warning signal through self-diagnosis results and transmit it to the secondary equipment module;

[0039] A secondary equipment module is integrated with the primary equipment module, comprising a signal acquisition unit, a communication unit and a control unit, and is used to collect power operation parameters, execute fault protection logic, and realize remote communication;

[0040] The control unit is connected to the main circuit breaker unit and is used to execute fault isolation and protection logic based on the operating status data of the components collected in real time;

[0041] A sealed integrated structural shell covers the primary device module and the secondary device module to provide structural protection and environmental isolation. A signal transmission shielding channel is provided inside the shell to shield external electromagnetic interference;

[0042] A signal monitoring module, integrated inside the housing and connected to the communication unit, for real-time monitoring of the entire process of signal transmission, and calculating the impedance change resistance value of the signal transmission path and the environmental degradation index of the signal interface;

[0043] A signal stability analysis module is used to evaluate the signal transmission stability between the primary device and the secondary device based on the calculated impedance change resistance value of the signal transmission path and the environmental degradation index of the signal interface;

[0044] An intelligent control module, including an anti-corrosion coating, a humidity control unit and a salt spray filter unit, is arranged inside and outside the housing, and is used to intelligently control the humidity control unit and the salt spray filter unit according to an evaluation result of signal transmission stability between the primary device and the secondary device;

[0045] Wherein, the humidity control unit is used to dynamically adjust the humidity level inside the equipment, and the salt spray filter unit is used to switch the operating mode of the external air inlet and the heat dissipation exhaust port.

[0046] The main circuit breaker unit in the primary equipment module is responsible for performing core functions such as overload protection, short-circuit protection and fault isolation for the power system. It also integrates the self-diagnosis capability of the operating status, and realizes real-time detection of key components and generation of early warning signals through the following steps:

[0047] The main circuit breaker unit has built-in sensors, including: Contact wear sensor: Monitors the wear of the main circuit breaker contacts and assesses the contact service life by detecting changes in contact thickness, surface integrity or contact resistance.

[0048] Mechanical jam monitoring sensor: Based on torque sensors and displacement sensors, it detects the movement deviation of the circuit breaker mechanical parts (such as speed and position abnormalities of opening or closing actions) in real time to identify jamming or abnormal friction problems.

[0049] Each sensor transmits the real-time operating data detected to the data processing module inside the main circuit breaker unit. The data processing module uses an embedded microcontroller to run the following analysis logic:

[0050] Compare current sensor data with normal operating thresholds to identify potential abnormal trends (such as contact resistance exceeding set values ​​or mechanical displacement deviation exceeding the allowable range). Use time series analysis to predict the degradation trend of key components and assess their remaining service life.

[0051] The data processing module generates equipment operation status reports based on diagnostic algorithms, including information such as component wear, stuck locations, and fault trends. When the diagnostic results indicate that the wear or fault risk reaches the warning threshold, the system generates a warning signal. The warning signal is transmitted to the secondary equipment module through the built-in signal bus or multi-mode communication interface for processing by the control unit.

[0052] After receiving the warning signal, the secondary equipment module can remotely transmit the fault information to the monitoring center or the maintenance personnel's terminal through the communication unit. Combined with real-time data, the system generates maintenance suggestions (such as replacing contacts, checking mechanical parts), and prompts specific operation steps to improve maintenance efficiency and accuracy.

[0053] The secondary equipment module is the core control and data processing unit of the intelligent circuit breaker system. It is integrated with the primary equipment module and mainly works together through the signal acquisition unit, communication unit and control unit to realize the monitoring of the operating status of the power system, the execution of fault protection logic and remote communication functions.

[0054] Signal acquisition unit: collects real-time operating status data provided by the primary equipment module (main circuit breaker unit) and key parameters of the power system, such as current, voltage, power factor, temperature, etc. Collects multiple parameters at the same time to ensure high accuracy and low latency of the data. Detects and evaluates the harmonic components in the power grid to determine the power quality. Receives status signals from the main circuit breaker unit (such as contact wear and mechanical jam detection results). Filters and digitizes the collected data to reduce the impact of environmental interference and ensure data accuracy. The processed data is passed to the control unit to support the operation of the fault protection logic.

[0055] Communication unit: responsible for data transmission between the secondary equipment module and the primary equipment module and the remote monitoring platform to achieve information interconnection. Supports multi-mode communication protocols, including broadband carrier, 5G, LoRa, Ethernet, etc., and is compatible with different network environments and monitoring systems. Dynamically adjusts the communication frequency according to network load and interference to ensure the stability of signal transmission. It can upload real-time status information and receive remote control commands. Uploads the fault warning signal, equipment operating status and power operation parameters generated by the control unit to the remote monitoring platform. Receives remote operation and maintenance instructions (such as circuit breaker opening and closing operations) and feedbacks the execution results.

[0056] Control unit: As the core of the secondary equipment module, it executes the fault protection logic and control decision of the equipment, and realizes real-time adjustment of the power grid operation status through collaborative work with the primary equipment module. It can independently run complex protection logic and link with the master station system at the same time. It dynamically adjusts the fault protection logic based on real-time data, including optimization of overload protection curve and rapid location of short-circuit fault. According to the real-time data provided by the signal acquisition unit, it identifies abnormal conditions such as overload and short circuit, and quickly triggers the circuit breaker action. Overload protection: Using the adaptive adjustment algorithm, the protection curve is dynamically modified according to the actual current load to prevent false operation. It quickly locates the fault point and immediately performs the circuit breaker opening operation to isolate the fault area. It receives the self-diagnosis data of the main circuit breaker unit (such as contact wear or mechanical jamming state), analyzes the fault risk in combination with the equipment operation parameters, and generates an early warning signal to upload to the monitoring platform. According to environmental conditions (such as high humidity, high salt spray) and grid load changes, the circuit breaker action sensitivity and communication mode are optimized in real time to improve the overall operation reliability.

[0057] The sealed integrated structural shell is an important component of the pole-mounted primary and secondary integrated intelligent circuit breaker, covering the primary equipment module and the secondary equipment module. Through optimized design, it provides efficient structural protection and environmental isolation functions to ensure the reliable operation of the equipment in harsh environments.

[0058] The shell is made of high-strength composite materials (such as glass fiber reinforced plastic or aluminum alloy), which has shock-proof and impact-proof mechanical properties to ensure the structural integrity of the equipment during long-term operation. The shell is designed to meet the IP68 protection standard and is completely sealed to prevent water, dust and corrosive substances (such as salt spray) from entering the internal components. The inner and outer surfaces are coated with nano-level anti-corrosion coatings to effectively delay material aging and corrosion and improve the durability of the shell.

[0059] A signal transmission shielding channel is set inside the shell to isolate external electromagnetic interference (EMI) and reduce the coupling interference between different signal lines inside the shell. Multi-layer metal mesh shielding structure: multiple layers of metal mesh materials (such as nickel-copper alloy) are embedded around the shielding channel to form an efficient shielding layer to inhibit the invasion and conduction of electromagnetic radiation. Highly conductive paint is applied to the surface of the shielding channel to further reduce the transmittance of the shielding channel to external electromagnetic waves. Signal lines, power lines, and control lines are strictly layered in the channel to reduce mutual interference between signals.

[0060] The shell adopts a layered isolation design, and the primary equipment module and the secondary equipment module are placed in independent cavities. The cavities are connected by special sealing connectors to further improve the environmental isolation effect. The shell adopts a modular splicing design, which can be quickly disassembled and assembled, making it easy to replace and maintain components on site. With built-in sensor monitoring (such as temperature and humidity sensors), maintenance needs are prompted through remote diagnosis to avoid unnecessary opening of the cover.

[0061] The shell is embedded with an efficient heat dissipation channel, combined with a thermally conductive silicone pad and heat dissipation fins on the outside of the shell to achieve rapid heat dissipation during device operation. The fanless heat dissipation design prevents environmental particles from entering the channel and improves reliability. The key connection parts of the shell (such as the input and output interfaces) use highly airtight epoxy resin packaging technology to ensure sealing reliability. All openings are equipped with sealing rings and have been verified by pressure testing.

[0062] The signal monitoring module is integrated inside the shell and connected to the communication unit for real-time monitoring of the entire process of signal transmission and calculating the impedance change resistance value of the signal transmission path and the environmental degradation index of the signal interface.

[0063] The signal monitoring module is integrated inside the housing and directly connected to the communication unit. It is mainly used to monitor the entire process of signal transmission in real time. The module collects key parameters of the signal (such as signal strength, noise interference, voltage fluctuation and delay, etc.) through the built-in high-precision signal detector to evaluate the signal quality in real time. By dynamically monitoring the signal transmission path, the module can promptly identify interference, attenuation or interruption problems that may occur during the transmission process to ensure the stability and reliability of the signal.

[0064] When the signal monitoring module detects a transmission anomaly (such as signal quality degradation or transmission interruption), the system will immediately generate a diagnostic report and upload the fault information to the monitoring center or operation and maintenance terminal through the communication unit. Combined with the dynamic fault-tolerant algorithm, the signal monitoring module can also automatically switch to the backup channel or adjust the transmission frequency in coordination with the control unit to restore normal communication. The introduction of this module not only improves the visual management capability of device signal transmission, but also greatly reduces the risk of equipment operation caused by signal failure.

[0065] The calculation method of the signal transmission path's impedance change resistance value is:

[0066] The input signal of the transmission path is collected by a spectrum analyzer and reflected signal , calculate the input signal power , represents the input power of the transmission path (unit: watt W). It is obtained by measuring the effective power output by the signal source, and the formula is: ; T is the signal period, calculate the power loss , the power loss caused by impedance mismatch in the transmission path (unit: watt W), calculated as: ; Use an impedance analyzer to measure the impedance value Z(f) of the signal path in the range of fmin to fmax, where fmin is the lowest frequency of the signal (unit: Hz). fmax is the highest frequency of the signal (unit: Hz). fmax−fmin reflects the bandwidth range of the transmission path, and ΔZ(f) is calculated using the expression: ; is the maximum impedance value in the path (unit: ohm Ω), is the minimum impedance value in the path (unit: ohm). It is obtained by statistically calculating the impedance measurement value Z(f) at each frequency point. The value of the ability to resist impedance changes is calculated as follows: ; In the formula, It is the value of the ability to resist impedance changes.

[0067] The greater the impedance change resistance value, the stronger the signal transmission path between the primary device and the secondary device is in tolerance to impedance changes, and the higher the transmission stability. This means that even in harsh environments or complex electromagnetic interference conditions, the signal can still maintain low loss and high quality, thereby ensuring the accurate transmission of key control instructions and status data. A larger impedance change resistance value usually reflects good impedance matching of the device, reasonable optimization of the transmission path, and effective electromagnetic shielding design.

[0068] On the contrary, the smaller the impedance change resistance value, the more sensitive the signal transmission path is to impedance changes and the worse the stability. This may cause the signal to be significantly reflected, attenuated or even interrupted during transmission, thereby reducing the response speed and reliability of the device. A smaller impedance change resistance value means that the design of the transmission path needs to be optimized, such as improving impedance matching, strengthening shielding measures, or adjusting the interface characteristics of the primary and secondary devices to improve the stability of signal transmission.

[0069] The calculation method of the environmental degradation index of the signal interface is:

[0070] Collect indicators reflecting the environment around the interface in real time (such as humidity Ht, salt spray concentration St, temperature Tt), and regularly measure key performance parameters of the signal interface, such as contact resistance Rt and insulation resistance It. Normalize environmental data and performance data to the [0,1] range to ensure consistency of data in different dimensions. The normalization formula is: ; is the normalized data point value, is the original data value (such as Ht, St, Tt, Rt, It), xmin and xmax are the minimum and maximum values ​​of the historical data, and the environmental degradation value at the current moment is calculated. The expression is: ; In the formula, is the environmental degradation value at the current moment, is the normalized data value at the current moment, α is the smoothing weight coefficient, which determines the relative weight of current data and historical data (the value range is 0<α≤1. The larger the α, the more attention is paid to the changes in the current environment and performance data, and the smaller the α, the more attention is paid to the long-term historical trend. The initial value The mean of the normalized data is set, and the environmental degradation index is obtained by weighted summation of the environmental degradation values ​​within N fixed time intervals.

[0071] The larger the environmental degradation index, the more it indicates that the signal interface between the primary and secondary devices has been significantly affected by environmental factors (such as high humidity, high salt spray or temperature difference), and the degree of performance degradation is high, which may be manifested as increased contact resistance, decreased insulation performance or increased signal attenuation. In this case, the stability of signal transmission is significantly reduced, and problems such as signal interruption, increased interference or data transmission delay are prone to occur. If not maintained in time, the fault isolation and protection functions of the equipment may not be able to perform normally.

[0072] The smaller the environmental degradation index is, the higher the reliability of the signal interface is in the current environment, the key indicators such as contact resistance and insulation performance are within the normal range, and the impact of the environment on signal transmission is small. At this time, the stability of signal transmission is high, and data can be accurately transmitted, ensuring the efficient coordination between primary and secondary equipment, thereby improving the operational reliability and safety of the entire system.

[0073] The signal stability analysis module is used to evaluate the signal transmission stability between the primary device and the secondary device based on the calculated impedance change resistance value of the signal transmission path and the environmental degradation index of the signal interface.

[0074] The impedance resistance value and the environmental degradation index are normalized, and the signal transmission stability coefficient between the primary device and the secondary device is calculated based on the normalized impedance resistance value and the environmental degradation index.

[0075] For example, the present invention can use the following formula to calculate the signal transmission stability coefficient between the primary device and the secondary device, and the calculation expression is: ; In the formula, is the signal transmission stability coefficient between the primary device and the secondary device, is the value of the ability to resist impedance changes, is the environmental degradation index, is the proportionality coefficient of the impedance change resistance value and the environmental degradation index, and .

[0076] The obtained signal transmission stability coefficient between the primary device and the secondary device is compared with the stability reference threshold value pre-set according to historical data. If the signal transmission stability coefficient between the primary device and the secondary device is greater than or equal to the pre-set stability reference threshold value, it means that the signal transmission stability between the primary device and the secondary device is high, and the signal transmission stability between the primary device and the secondary device is classified as stable transmission; if the signal transmission stability coefficient between the primary device and the secondary device is less than the pre-set stability reference threshold value, it means that the signal transmission stability between the primary device and the secondary device is low, and the signal transmission stability between the primary device and the secondary device is classified as unstable transmission.

[0077] An intelligent control module, including an anti-corrosion coating, a humidity control unit and a salt spray filter unit, is arranged inside and outside the housing, and is used to intelligently control the humidity control unit and the salt spray filter unit according to an evaluation result of signal transmission stability between the primary device and the secondary device;

[0078] Wherein, the humidity control unit is used to dynamically adjust the humidity level inside the equipment, and the salt spray filter unit is used to switch the operating mode of the external air inlet and the heat dissipation exhaust port.

[0079] The goal of the humidity control unit is to maintain the humidity inside the equipment within a set safe range. , when the signal transmission stability coefficient S decreases, the operating intensity of the humidity control unit will increase accordingly to quickly reduce the impact of humidity. The control formula is: ; is the operating intensity of the humidity control unit (such as heating power or desiccant working intensity, unit: W), is the maximum operating intensity of the humidity control unit, S is the signal transmission stability coefficient, ranging from [0,1], 1−S means that the lower the stability coefficient, the higher the operating intensity of the humidity control unit.

[0080] When S=1 (signal stability is high): =0; the humidity control unit remains in standby mode and does not need to be operated. When S→0 (signal stability is very low): → ;The humidity control unit operates at maximum intensity, quickly reducing the internal humidity level.

[0081] The operation mode of the salt spray filter unit is achieved by controlling the switch of the filter and the working state of the air inlet. The adjustment is based on the stability coefficient S and the external environment salt spray concentration The calculation expression is: ; is the operating intensity of the salt spray filter unit (such as fan power or filter valve opening), It is the maximum operating intensity of the salt spray filter unit. is the real-time monitored external environment salt spray concentration (unit: ppm), The maximum salt spray concentration designed for the salt spray filter unit (unit: ppm).

[0082] When S=1 or =0 (high signal stability, low external salt spray concentration): =0; the salt spray filter unit maintains low power consumption mode, and the air inlet and exhaust port operate in normal mode. → (Low signal stability, high external salt spray concentration): → The salt spray filtration unit runs at full speed, the filter is in the highest working state, and the operating modes of the external air inlet and exhaust port are switched to isolate salt spray from entering the equipment to the greatest extent.

[0083] The integrated humidity control unit and salt spray filter unit are adjusted, and the intelligent control module is based on the signal transmission stability coefficient S and environmental conditions. The linkage adjustment operation intensity is expressed as: ; In the formula, The overall operating intensity of the intelligent control module. , is the weight coefficient of the humidity control unit and the salt spray filter unit, satisfying .

[0084] When S is large (signal stability is high), the overall operating intensity is low to save energy. When S is small (signal stability is low), the operating intensity of the humidity control unit and the salt spray filter unit are dynamically allocated according to the actual environmental conditions and S, respectively, to improve the quality of the equipment operating environment and ensure the stability of signal transmission is restored.

[0085] In this embodiment, the primary equipment module realizes overload protection, short circuit protection and fault isolation through the main circuit breaker unit, and has the self-diagnosis function of real-time detection of contact wear and mechanical jamming status, and generates an early warning signal to transmit to the secondary equipment module. The secondary equipment module integrates signal acquisition, communication and control units, which can collect power operation parameters and execute fault protection logic, and realize remote communication at the same time. The shell adopts a sealed integrated design, and a signal transmission shielding channel is provided inside to shield electromagnetic interference and ensure the stability of equipment operation. The signal monitoring module monitors the entire signal transmission process in real time, calculates the impedance change resistance value and environmental degradation index; the signal stability analysis module evaluates the signal transmission stability based on the above results. The intelligent control module dynamically adjusts the internal humidity level and external ventilation mode of the equipment according to the signal transmission stability through the anti-corrosion coating, humidity control unit and salt spray filter unit, thereby improving the equipment operating environment quality and signal transmission reliability.

[0086] The above formulas are all dimensionless and numerical calculations. The formula is a formula for the most recent real situation obtained by collecting a large amount of data and performing software simulation. The preset parameters in the formula are set by technicians in this field according to actual conditions.

[0087] The above embodiments can be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented by software, the above embodiments can be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the process or function described in the embodiment of the present application is generated in whole or in part. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium. For example, the computer instructions can be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired (e.g., infrared, wireless, microwave, etc.). The computer-readable storage medium can be any available medium that a computer can access or a data storage device such as a server or data center that contains one or more available media sets. The available medium can be a magnetic medium (e.g., a floppy disk, a hard disk, a tape), an optical medium (e.g., a DVD), or a semiconductor medium. The semiconductor medium can be a solid-state hard disk.

[0088] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application.

Claims

1. A primary and secondary integrated intelligent circuit breaker on a pole, characterized by: It includes primary equipment module, secondary equipment module, sealed integrated structure housing, signal monitoring module, signal stability analysis module and intelligent control module; A primary equipment module, used to perform overload protection, short circuit protection and fault isolation of the power system, the primary equipment module comprising a main circuit breaker unit; The main circuit breaker unit is used to detect the operating status data of contact wear and mechanical jam components in real time, and generate an early warning signal through self-diagnosis results and transmit it to the secondary equipment module; A secondary equipment module is integrated with the primary equipment module, comprising a signal acquisition unit, a communication unit and a control unit, and is used to collect power operation parameters, execute fault protection logic, and realize remote communication; The control unit is connected to the main circuit breaker unit and is used to execute fault isolation and protection logic based on the operating status data of the components collected in real time; A sealed integrated structural shell covers the primary device module and the secondary device module to provide structural protection and environmental isolation. A signal transmission shielding channel is provided inside the shell to shield external electromagnetic interference; A signal monitoring module, integrated inside the housing and connected to the communication unit, for real-time monitoring of the entire process of signal transmission, and calculating the impedance change resistance value of the signal transmission path and the environmental degradation index of the signal interface; A signal stability analysis module is used to evaluate the signal transmission stability between the primary device and the secondary device based on the calculated impedance change resistance value of the signal transmission path and the environmental degradation index of the signal interface; An intelligent control module, including an anti-corrosion coating, a humidity control unit and a salt spray filter unit, is arranged inside and outside the housing, and is used to intelligently control the humidity control unit and the salt spray filter unit according to an evaluation result of signal transmission stability between the primary device and the secondary device; Wherein, the humidity control unit is used to dynamically adjust the humidity level inside the equipment, and the salt spray filter unit is used to switch the operating mode of the external air inlet and the heat dissipation exhaust port.

2. The primary and secondary integrated intelligent circuit breaker on a pole according to claim 1 is characterized in that: In the signal monitoring module, the calculation method of the impedance change resistance value of the signal transmission path is: The input signal of the transmission path is collected by a spectrum analyzer and reflected signal , calculate the input signal power , represents the input power of the transmission path, which is obtained by measuring the effective power output by the signal source. The formula is: ; T is the signal period, calculate the power loss , the power loss caused by impedance mismatch in the transmission path is calculated as: ; Use an impedance analyzer to measure the impedance value Z(f) of the signal path in the range of fmin to fmax, where fmin is the lowest frequency of the signal and fmax is the highest frequency of the signal. Reflecting the bandwidth range of the transmission path, calculate ΔZ(f), the expression is: ; is the maximum impedance value in the path, is the minimum impedance value in the path, which is obtained by statistically calculating the impedance measurement value Z(f) at each frequency point, and calculating the impedance resistance value. The expression is: ; In the formula, It is the value of the ability to resist impedance changes.

3. The primary and secondary integrated intelligent circuit breaker on a pole according to claim 2 is characterized in that: In the signal monitoring module, the calculation method of the environmental degradation index of the signal interface is: Indicators reflecting the environment around the interface are collected in real time, including humidity Ht, salt spray concentration St, and temperature Tt. Performance parameters of the signal interface are measured regularly, including contact resistance Rt and insulation resistance It. Environmental data and performance data are normalized to the range of [0,1]. The normalization formula is: ; is the normalized data point value, is the original data value, including Ht, St, Tt, Rt, It, xmin and xmax are the minimum and maximum values ​​of the historical data, and the environmental degradation value at the current moment is calculated. The expression is: ; In the formula, is the environmental degradation value at the current moment, is the normalized data value at the current moment, α is the smoothing weight coefficient, which determines the weight of the current data and historical data, and the initial value The mean of the normalized data is set, and the environmental degradation index is obtained by weighted summation of the environmental degradation values ​​within N fixed time intervals.

4. The primary and secondary integrated intelligent circuit breaker on a pole according to claim 3 is characterized in that: In the signal stability analysis module, the signal transmission stability between the primary device and the secondary device is evaluated based on the calculated impedance change resistance value of the signal transmission path and the environmental degradation index of the signal interface. Specifically: The impedance resistance value and the environmental degradation index are normalized, and the signal transmission stability coefficient between the primary device and the secondary device is calculated based on the normalized impedance resistance value and the environmental degradation index.

5. The primary and secondary integrated intelligent circuit breaker on a pole according to claim 4 is characterized in that: The obtained signal transmission stability coefficient between the primary device and the secondary device is compared with the stability reference threshold value pre-set according to historical data. If the signal transmission stability coefficient between the primary device and the secondary device is greater than or equal to the pre-set stability reference threshold value, it means that the signal transmission stability between the primary device and the secondary device is high, and the signal transmission stability between the primary device and the secondary device is classified as stable transmission; if the signal transmission stability coefficient between the primary device and the secondary device is less than the pre-set stability reference threshold value, it means that the signal transmission stability between the primary device and the secondary device is low, and the signal transmission stability between the primary device and the secondary device is classified as unstable transmission.

6. The primary and secondary integrated intelligent circuit breaker on a pole according to claim 1 is characterized in that: In the intelligent control module, the humidity control unit and the salt spray filter unit are intelligently controlled according to the evaluation results of the signal transmission stability between the primary device and the secondary device; The goal of the humidity control unit is to maintain the humidity inside the equipment within a set safe range. , when the signal transmission stability coefficient S decreases, the operating intensity of the humidity control unit will increase accordingly to quickly reduce the impact of humidity. The control formula is: ; is the operating intensity of the humidity control unit, is the maximum operating intensity of the humidity control unit, S is the signal transmission stability coefficient, ranging from [0,1], It means that the lower the stability coefficient, the more intensively the humidity control unit is operated; When S=1: =0; the humidity control unit remains in standby mode and does not need to be operated; when S→0: → ;The humidity control unit operates at maximum intensity, quickly reducing the internal humidity level; The operation mode of the salt spray filter unit is realized by controlling the switch of the filter and the working state of the air inlet. The adjustment is based on the stability coefficient S and the external environment salt spray concentration , the calculation expression is: ; is the operating intensity of the salt spray filter unit, is the maximum operating intensity of the salt spray filter unit, To monitor the salt spray concentration of the external environment in real time, The maximum salt spray concentration designed for the salt spray filtration unit; When S=1 or =0: =0; the salt spray filter unit maintains low power consumption mode, and the air inlet and exhaust port operate in normal mode; when S→0 or → hour: → The salt spray filtration unit runs at full speed, the filter is in the highest working state, and the operating modes of the external air inlet and exhaust port are switched to isolate salt spray from entering the equipment to the greatest extent.

7. The primary and secondary integrated intelligent circuit breaker on a pole according to claim 6 is characterized by: The intelligent control module adjusts the humidity control unit and the salt spray filter unit according to the signal transmission stability coefficient S and the real-time monitoring of the external environment salt spray concentration. The linkage adjustment operation intensity is expressed as: ; In the formula, The overall operating intensity of the intelligent control module. , is the weight coefficient of the humidity control unit and the salt spray filter unit, satisfying .

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