Safety protection method and device for low-voltage electrical equipment

Abstract

The application provides a safety protection method and device for low-voltage electrical equipment. The safety protection system for low-voltage electrical equipment comprises a detection module, an analysis control module and a safety protection module, which are in communication connection with each other, and the detection module is electrically connected with the low-voltage electrical equipment. The application controls the safety protection module to execute the measures of alarming or cutting off the power supply based on the instructions of the control module by analyzing the data of overload, short circuit, electric leakage and temperature detection and judging the state, realizes the comprehensive determination of system failure, ensures the early discovery of equipment hidden danger, reduces the accident risk of low-voltage electrical equipment, and solves the problems that the traditional safety protection measures cannot realize real-time monitoring and rapid response in the prior art, and the safety hidden dangers such as overload, short circuit, electric leakage and over-temperature exist in low-voltage electrical equipment.

Description

Technical Field

[0001] This invention relates to electrical equipment protection technology, and more specifically, to a safety protection method for low-voltage electrical equipment, a safety protection device for low-voltage electrical equipment, a computer-readable storage medium, and a safety protection system for low-voltage electrical equipment. Background Technology

[0002] In modern industry and daily life, the widespread use of low-voltage electrical equipment has provided great convenience for our production and daily life. However, with the increasing integration and power of electrical equipment, safety hazards have gradually emerged. Faults such as overload, short circuit, leakage, and overheating can not only damage equipment but also threaten personal safety.

[0003] Traditional safety protection measures often rely on offline detection and manual monitoring, which cannot achieve real-time monitoring and rapid response of equipment, posing significant safety hazards. Furthermore, existing equipment protection technologies mainly focus on the root cause monitoring of single faults, such as overload or short circuit, and the comprehensive judgment and early warning mechanisms for multiple faults have not been fully researched and applied. Therefore, developing a safety protection system capable of real-time monitoring and proactive protection of low-voltage electrical equipment is of paramount importance. Summary of the Invention

[0004] The main objective of this application is to provide a safety protection method, a safety protection device, a computer-readable storage medium, and a safety protection system for low-voltage electrical equipment, so as to at least solve the problem that in the prior art, low-voltage electrical equipment has safety hazards such as overload, short circuit, leakage, and overheating, and that traditional safety protection measures cannot achieve real-time monitoring and rapid response.

[0005] To achieve the above objectives, according to one aspect of this application, a safety protection method for low-voltage electrical equipment is provided. This method is applied to a low-voltage electrical equipment safety protection system, which includes a detection module, an analysis and control module, and a safety protection module. These modules are communicatively connected. The detection module is electrically connected to the low-voltage electrical equipment. The method includes: controlling the detection module to acquire operating parameters of the low-voltage electrical equipment, including supply voltage, load resistance, grounding current, and operating temperature; controlling the analysis and control module to calculate overload current, leakage current, and short-circuit current based on the operating parameters; performing operational status diagnosis based on the overload current, leakage current, short-circuit current, and operating temperature; generating a diagnostic report, which at least includes whether the low-voltage electrical equipment is operating normally; and controlling the safety protection module to receive the diagnostic report, perform fault troubleshooting using a fault troubleshooting algorithm, and generate corresponding control commands based on the fault type determined after fault troubleshooting; and regulating the low-voltage electrical equipment based on the control commands.

[0006] Optionally, controlling the detection module to acquire the operating parameters of the low-voltage electrical equipment includes: acquiring the current resistance value of the temperature sensor in the detection module to obtain a first resistance value; acquiring the reference resistance value of the temperature sensor to obtain a second resistance value; and substituting the first resistance value and the second resistance value into a first preset formula. The operating temperature is obtained, wherein R sensor R is the first resistance value, R0 is the second resistance value, and T is the second resistance value. current The operating temperature is [value].

[0007] Optionally, controlling the analysis and control module to calculate the overload current, leakage current, and short-circuit current based on the operating parameters includes: substituting the supply voltage and the load resistance into a second preset formula. The overload current is obtained, where V supply For the supply voltage, I load R is the overload current. load The load resistance is given; the A-phase current, B-phase current, C-phase current and the grounding current are substituted into the third preset formula I. leak =I phase1 +I phase2 +I phase3 -I ground The leakage current is obtained, wherein I leak For the leakage current, I phase1 Let I be the phase A current. phase2 Let I be the phase B current. phase3 For the C-phase current, I groundThe grounding current is obtained; the first equivalent resistance of the low-voltage electrical equipment under short-circuit conditions is obtained, and the first equivalent resistance and the supply voltage are substituted into the fourth preset formula. The short-circuit current is obtained, where I short Z is the short-circuit current. eq This is the first equivalent resistance.

[0008] Optionally, operational status diagnosis is performed based on the overload current, leakage current, short-circuit current, and operating temperature to determine whether the low-voltage electrical equipment is operating normally. This includes: calculating the ratio of a first preset current to the overload current to obtain an overload safety factor; determining that the low-voltage electrical equipment is not overloaded if the overload safety factor is greater than a second threshold, and determining that the low-voltage electrical equipment is overloaded if the overload safety factor is less than or equal to the second threshold; calculating the ratio of a second preset current to the leakage current to obtain a leakage safety factor; determining that the low-voltage electrical equipment is not leaking current if the leakage safety factor is less than the second threshold, and determining that the leakage safety factor is greater than or equal to the second threshold. If the leakage current is found to be present in the low-voltage electrical equipment when the second threshold is met, the ratio of the third preset current to the short-circuit current is calculated to obtain a short-circuit safety factor. If the short-circuit safety factor is less than the second threshold, the low-voltage electrical equipment is determined not to have a short circuit. If the short-circuit safety factor is greater than or equal to the second threshold, the low-voltage electrical equipment is determined to have a short circuit. The ratio of the preset temperature threshold to the operating temperature is calculated to obtain an overheating safety factor. If the overheating safety factor is less than the second threshold, the low-voltage electrical equipment is determined not to have an overheating problem. If the overheating safety factor is greater than or equal to the second threshold, the low-voltage electrical equipment is determined to have an overheating problem.

[0009] Optionally, generating a diagnostic report includes: setting a first state parameter to 1 when the low-voltage electrical equipment exhibits an overload, and setting the first state parameter to 0 when the low-voltage electrical equipment does not exhibit an overload; setting a second state parameter to 1 when the low-voltage electrical equipment exhibits a leakage current, and setting the second state parameter to 0 when the low-voltage electrical equipment does not exhibit a leakage current; setting a third state parameter to 1 when the low-voltage electrical equipment exhibits a short circuit, and setting the third state parameter to 0 when the low-voltage electrical equipment does not exhibit a short circuit; and setting a fourth state parameter to 1 when the low-voltage electrical equipment exhibits overheating, and setting the fourth state parameter to 0 when the low-voltage electrical equipment does not exhibit overheating.

[0010] Optionally, the security protection module receives the diagnostic report and performs fault troubleshooting using a fault troubleshooting algorithm, including: substituting the first state parameter, the second state parameter, the second state parameter, the second state parameter, and the corresponding first weight, second weight, third weight, and fourth weight into a fifth preset formula D. output The status score is obtained by multiplying w1D1, w2D2, w3D3, and w4D4, where w1 is the first weight, D1 is the first status parameter, w2 is the second weight, D2 is the second status parameter, w3 is the third weight, D3 is the third status parameter, w4 is the fourth weight, and D4 is the fourth status parameter. If the status score is less than or equal to the third threshold, the low-voltage electrical equipment is determined to be in normal operating condition. If the status score is greater than the third threshold but less than the fourth threshold, the low-voltage electrical equipment is determined to be in a potential risk state, and a first alarm message is generated. If the status score is greater than or equal to the fourth threshold, the low-voltage electrical equipment is determined to be in an emergency fault state, and a second alarm message is generated.

[0011] Optionally, a corresponding control command is generated based on the fault type determined after troubleshooting, including: not generating a corresponding control command when the low-voltage electrical equipment is in the normal operating state; generating an alarm command when the low-voltage electrical equipment is in the potential risk state; and generating the alarm command and isolation command when the low-voltage electrical equipment is in the emergency fault state.

[0012] According to another aspect of this application, a safety protection device for low-voltage electrical equipment is provided. This safety protection device is applied to a low-voltage electrical equipment safety protection system, which includes a detection module, an analysis and control module, and a safety protection module. These modules are communicatively connected. The detection module is electrically connected to the low-voltage electrical equipment. The device includes: a first control unit for controlling the detection module to acquire operating parameters of the low-voltage electrical equipment, including supply voltage, load resistance, grounding current, and operating temperature; a second control unit for controlling the analysis and control module to calculate overload current, leakage current, and short-circuit current based on the operating parameters, perform operational status diagnosis based on the overload current, leakage current, short-circuit current, and operating temperature, and generate a diagnostic report, which at least includes whether the low-voltage electrical equipment is operating normally; and a third control unit for controlling the safety protection module to receive the diagnostic report, perform fault troubleshooting through a fault troubleshooting algorithm, generate corresponding control commands based on the fault type determined after fault troubleshooting, and regulate the low-voltage electrical equipment based on the control commands.

[0013] According to another aspect of this application, a computer-readable storage medium is provided, the computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device on which the computer-readable storage medium is located to perform any of the methods described.

[0014] According to another aspect of this application, a low-voltage electrical equipment safety protection system is provided, comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs including methods for performing any one of the methods described.

[0015] This application provides a safety protection method for low-voltage electrical equipment. The method is applied to a low-voltage electrical equipment safety protection system, which includes a detection module, an analysis and control module, and a safety protection module. These modules are communicatively connected. The detection module is electrically connected to the low-voltage electrical equipment. The method includes: first, controlling the detection module to acquire the operating parameters of the low-voltage electrical equipment, including supply voltage, load resistance, grounding current, and operating temperature; then, controlling the analysis and control module to calculate overload current, leakage current, and short-circuit current based on the operating parameters, and performing operational status diagnosis based on the overload current, leakage current, short-circuit current, and operating temperature, generating a diagnostic report. The diagnostic report at least includes whether the low-voltage electrical equipment is operating normally; finally, controlling the safety protection module to receive the diagnostic report, perform fault troubleshooting using a fault troubleshooting algorithm, and generate corresponding control commands based on the fault type determined after fault troubleshooting, and regulate the low-voltage electrical equipment based on the control commands. This application uses a control module to detect and analyze overload, short circuit, leakage, and temperature data to determine the status. A safety protection module then executes alarm or power-off measures based on control module commands, enabling comprehensive fault diagnosis of the system. This ensures early detection of potential equipment hazards, reduces the risk of accidents in low-voltage electrical equipment, and solves the problem that existing low-voltage electrical equipment suffers from overload, short circuit, leakage, and overheating hazards, and traditional safety protection measures cannot achieve real-time monitoring and rapid response. Attached Figure Description

[0016] Figure 1 A hardware structure block diagram of a mobile terminal for a safety protection method for low-voltage electrical equipment provided in an embodiment of this application is shown.

[0017] Figure 2 A schematic flowchart of a safety protection method for low-voltage electrical equipment according to an embodiment of this application is shown.

[0018] Figure 3 A structural block diagram of a safety protection device for low-voltage electrical equipment provided according to an embodiment of this application is shown.

[0019] The above figures include the following reference numerals:

[0020] 102. Processor; 104. Memory; 106. Transmission device; 108. Input / output device. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0022] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0023] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0024] As described in the background section, existing low-voltage electrical equipment suffers from safety hazards such as overload, short circuit, leakage, and overheating. To address the problem that traditional safety protection measures cannot achieve real-time monitoring and rapid response, embodiments of this application provide a safety protection method, a safety protection device, a computer-readable storage medium, and a safety protection system for low-voltage electrical equipment.

[0025] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0026] The methods and embodiments provided in this application can be executed on a mobile terminal, computer terminal, or similar computing device. Taking running on a mobile terminal as an example, Figure 1 This is a hardware structure block diagram of a mobile terminal for a safety protection method for low-voltage electrical equipment according to an embodiment of the present invention. Figure 1 As shown, a mobile terminal may include one or more ( Figure 1 Only one is shown in the diagram. A processor 102 (which may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.) and a memory 104 for storing data are also shown. The mobile terminal may further include a transmission device 106 for communication functions and an input / output device 108. Those skilled in the art will understand that... Figure 1 The structure shown is for illustrative purposes only and does not limit the structure of the mobile terminal described above. For example, the mobile terminal may also include components that are more... Figure 1 The more or fewer components shown, or having the same Figure 1 The different configurations shown.

[0027] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the device information display method in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby implementing the above-described method. The memory 104 may include high-speed random access memory and non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of the aforementioned networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof. The transmission device 106 is used to receive or send data via a network. Specific examples of the aforementioned networks may include wireless networks provided by the mobile terminal's communication provider. In one example, the transmission device 106 includes a network interface controller (NIC), which can be connected to other network devices via a base station to communicate with the Internet. In one example, the transmission device 106 may be a radio frequency (RF) module, which is used to communicate with the Internet wirelessly.

[0028] This embodiment provides a safety protection method for low-voltage electrical equipment running on a mobile terminal, computer terminal, or similar computing device. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0029] Figure 2 This is a flowchart of a safety protection method for low-voltage electrical equipment according to an embodiment of this application. The safety protection method is applied to a low-voltage electrical equipment safety protection system, which includes a detection module, an analysis and control module, and a safety protection module. The modules are communicatively connected, and the detection module is electrically connected to the low-voltage electrical equipment.

[0030] like Figure 2 As shown, the method includes the following steps:

[0031] Step S201: The control detection module acquires the operating parameters of the low-voltage electrical equipment, including the power supply voltage, load resistance, grounding current and operating temperature.

[0032] Specifically, the detection module is used to monitor the power supply voltage, load resistance, three-phase current, grounding current, and operating temperature of low-voltage electrical equipment in real time, and transmit the detected data.

[0033] Step S202: The control analysis control module calculates the overload current, leakage current, and short-circuit current based on the operating parameters, performs operating status diagnosis based on the overload current, leakage current, short-circuit current, and operating temperature, and generates a diagnostic report. The diagnostic report includes at least whether the low-voltage electrical equipment is operating normally.

[0034] Specifically, by analyzing operating parameters, it is determined whether the equipment is in normal working condition, providing a basis for the next step of safety protection.

[0035] In step S203, the control safety protection module receives the diagnostic report, performs fault troubleshooting through the fault troubleshooting algorithm, generates corresponding control commands based on the fault type determined after fault troubleshooting, and regulates the low-voltage electrical equipment based on the control commands.

[0036] Specifically, based on the analysis results, a pre-defined fault-solving algorithm determines whether a fault exists. If a fault is found, a corresponding control command is sent to the safety protection module. The safety protection module then takes appropriate measures based on the control command to proactively protect the low-voltage electrical equipment. Through fault troubleshooting and equipment regulation, dangerous situations caused by equipment faults are effectively prevented, ensuring the safe operation of the equipment.

[0037] Before the detection module performs its tests, the system selects and connects appropriate safety protection and detection modules to the low-voltage electrical equipment based on the type of equipment and its operating environment. These modules may have features such as a larger measuring range or waterproof and dustproof capabilities. The installed safety protection and detection modules are then initialized and their communication connections with the analysis and control module are established to test the functionality of each module. This ensures normal communication and seamless cooperation, facilitating the protection of the low-voltage electrical equipment.

[0038] In summary, this safety protection method achieves comprehensive monitoring and protection of low-voltage electrical equipment through three steps: detection, analysis, and control. This method can promptly detect equipment anomalies and ensure safe operation, improving equipment lifespan and reliability through automated troubleshooting and control.

[0039] Therefore, the embodiments of this application provide a safety protection method for low-voltage electrical equipment. This application uses a control module to analyze data related to overload, short circuit, leakage, and temperature detection and determine the status. By controlling the safety protection module to execute alarm or power-off measures based on control module commands, it achieves real-time monitoring and automatic fault detection of low-voltage electrical equipment, significantly improving the active and passive safety protection capabilities of the equipment. This system can quickly respond to various potential faults, promptly issue alarms, and take protective measures, effectively reducing the risk of safety accidents caused by equipment failures. Furthermore, the system has good adaptability and can be reasonably configured and debugged according to different types and operating environments of low-voltage electrical equipment, further increasing scenario adaptability. It solves the problem in the prior art that low-voltage electrical equipment has safety hazards such as overload, short circuit, leakage, and overtemperature, and that traditional safety protection measures cannot achieve real-time monitoring and rapid response.

[0040] As one possible implementation, the control and detection module acquires the operating parameters of the low-voltage electrical equipment, including:

[0041] Obtain the current resistance value of the temperature sensor in the detection module to obtain a first resistance value; obtain the reference resistance value of the temperature sensor to obtain a second resistance value; substitute the first resistance value and the second resistance value into a first preset formula. The operating temperature is obtained, where R sensor R is the first resistance value, R0 is the second resistance value, and T is the third resistance value. current This refers to the operating temperature.

[0042] Specifically, by calculating the operating temperature using the resistance value of a temperature sensor, the operating status of low-voltage electrical equipment can be monitored in real time, ensuring that the equipment operates within a safe temperature range. The advantage of this method is that it utilizes the physical characteristics of the sensor to quickly and accurately obtain the equipment's temperature information through simple resistance measurement and calculation.

[0043] As one possible implementation, the control analysis module calculates the overload current, leakage current, and short-circuit current based on operating parameters, including:

[0044] Step S301: Substitute the supply voltage and load resistance into the second preset formula. The overload current is obtained, where V supply For the supply voltage, I load For overload current, R load For load resistance;

[0045] Specifically, by calculating the exact value of the overload current, it can help identify whether the workload exceeds the rated threshold of the equipment, detect potential equipment overload problems early, ensure equipment safety, and prevent damage.

[0046] Step S302: Substitute the A-phase current, B-phase current, C-phase current, and grounding current from the three-phase current into the third preset formula I. leak =I phase1 +I phase2 +I phas3e -I ground The leakage current is obtained, where I leak For leakage current, I phase1 Let I be the phase A current. phase2 For phase B current, I phase3 For phase C current, I ground It is the grounding current;

[0047] Specifically, calculating leakage current helps detect current leakage, such as insulation failure or electrical faults, allowing for proactive measures such as cutting off power or issuing alarms, thereby improving overall electrical safety.

[0048] Step S303: Obtain the first equivalent resistance of the low-voltage electrical equipment under short-circuit conditions, and substitute the first equivalent resistance and the supply voltage into the fourth preset formula. The short-circuit current is obtained, where I short Z is the short-circuit current. eq This is the first equivalent resistance.

[0049] Specifically, calculating short-circuit current can be used to monitor the system's status when a short circuit occurs, evaluate the system's protection functions, ensure that the power supply can be cut off in time in the event of a short circuit, prevent fires and equipment damage, and improve equipment safety.

[0050] In summary, the analysis and control module can quickly and accurately calculate overload current, leakage current, and short-circuit current. This real-time data can be used for equipment condition monitoring and fault diagnosis, providing necessary protection for low-voltage electrical equipment.

[0051] As one possible implementation, operational status diagnostics are performed based on overload current, leakage current, short-circuit current, and operating temperature to determine whether low-voltage electrical equipment is operating normally, including:

[0052] Step S401: Calculate the ratio of the first preset current to the overload current to obtain the overload safety factor. If the overload safety factor is greater than the second threshold, determine that the low-voltage electrical equipment is not overloaded. If the overload safety factor is less than or equal to the second threshold, determine that the low-voltage electrical equipment is overloaded.

[0053] Specifically, by determining the overload safety factor, overload conditions of equipment can be detected and addressed in a timely manner, preventing equipment damage and safety accidents.

[0054] Step S402: Calculate the ratio of the second preset current to the leakage current to obtain the leakage safety factor. If the leakage safety factor is less than the second threshold, it is determined that there is no leakage in the low-voltage electrical equipment. If the leakage safety factor is greater than or equal to the second threshold, it is determined that there is leakage in the low-voltage electrical equipment.

[0055] Specifically, by assessing the leakage current safety factor, the insulation condition of electrical equipment can be effectively detected, ensuring safe operation and reducing the risk of electric shock and fire.

[0056] Step S403: Calculate the ratio of the third preset current to the short-circuit current to obtain the short-circuit safety factor. If the short-circuit safety factor is less than the second threshold, it is determined that there is no short circuit in the low-voltage electrical equipment. If the short-circuit safety factor is greater than or equal to the second threshold, it is determined that there is a short circuit in the low-voltage electrical equipment.

[0057] Specifically, calculating the short-circuit safety factor helps identify short-circuit risks in a circuit, ensuring that the equipment can cut off the power supply in time, thus protecting the equipment and personal safety.

[0058] Step S404: Calculate the ratio of the preset temperature threshold to the operating temperature to obtain the overheating safety factor. If the overheating safety factor is less than the second threshold, it is determined that the low-voltage electrical equipment does not have an overheating phenomenon. If the overheating safety factor is greater than or equal to the second threshold, it is determined that the low-voltage electrical equipment has an overheating phenomenon.

[0059] Specifically, by judging the overheating safety factor, the overheating of the equipment can be detected in time, so as to take effective cooling or shutdown measures to prevent equipment failure or fire accidents caused by overheating.

[0060] Through the implementation of the above steps, the analysis and control module can comprehensively monitor the operating status of low-voltage electrical equipment. These calculations and judgments can promptly identify potential problems such as overload, leakage, short circuit, and overheating, ensuring safe equipment operation and improving system reliability and safety. For equipment that is not operating normally, the system can proactively issue alarms or take protective measures to protect the equipment and the safety of its operators. This approach will provide strong support for the management and maintenance of low-voltage electrical equipment, effectively reducing failure rates and maintenance costs.

[0061] As one possible implementation, generating a diagnostic report includes:

[0062] Step S501: When there is an overload in the low-voltage electrical equipment, the corresponding first state parameter is set to 1; when there is no overload in the low-voltage electrical equipment, the corresponding first state parameter is set to 0.

[0063] Specifically, the first status parameter can clearly indicate whether the device is in an overload state, which facilitates subsequent report generation and status monitoring.

[0064] Step S502: If there is leakage in the low-voltage electrical equipment, the corresponding second state parameter is set to 1; if there is no leakage in the low-voltage electrical equipment, the corresponding second state parameter is set to 0.

[0065] Specifically, the second state parameter can accurately reflect whether the equipment is leaking current, providing an important basis for electrical safety.

[0066] Step S503: When a short circuit occurs in the low-voltage electrical equipment, the corresponding third state parameter is set to 1; when there is no short circuit in the low-voltage electrical equipment, the corresponding third state parameter is set to 0.

[0067] Specifically, the third state parameter can indicate the short circuit status of the device, helping to identify and address potential circuit faults in a timely manner.

[0068] Step S504: If the low-voltage electrical equipment is overheating, the corresponding fourth state parameter is set to 1; if the low-voltage electrical equipment is not overheating, the corresponding fourth state parameter is set to 0.

[0069] Specifically, the fourth state parameter can reflect the temperature status of the equipment, preventing equipment damage or safety accidents caused by overheating.

[0070] In summary, a diagnostic report containing key status parameters can be generated. This report comprehensively reflects the operating status of low-voltage electrical equipment, including whether there is overload, leakage, short circuit, or overheating. These status parameters not only help maintenance personnel quickly understand the equipment status but also serve as input for automation systems, triggering corresponding protection or alarm mechanisms. Furthermore, this standardized report format facilitates remote monitoring and data analysis of equipment status, further improving the efficiency and safety of equipment management.

[0071] As one possible implementation, the control safety protection module receives diagnostic reports and performs troubleshooting using a troubleshooting algorithm, including:

[0072] Step S601: Substitute the first state parameter, the second state parameter, the second state parameter, the second state parameter, and the corresponding first weight, second weight, third weight, and fourth weight into the fifth preset formula D. output =w1D1+w2D2+w3D3+w4D4 to obtain the state score, where w1 is the first weight, D1 is the first state parameter, w2 is the second weight, D2 is the second state parameter, w3 is the third weight, D3 is the third state parameter, w4 is the fourth weight, and D4 is the fourth state parameter.

[0073] Specifically, by calculating status scores, the system can comprehensively consider the impact of different abnormal states on equipment health, thereby obtaining a comprehensive evaluation value. In practical implementation, to adapt to different alarm and fault conditions of low-voltage electrical equipment, supervisors can manually set or dynamically adjust the values ​​of w1, w2, w3, and w4 according to the operating conditions of the low-voltage electrical equipment. This adjusts the detection and judgment weights for fault identification between each step, making alarm and fault identification more accurate, reducing false alarms that lead to work stoppages and downtime, and further increasing scenario adaptability.

[0074] Step S602: If the status score is less than or equal to the third threshold, determine that the low-voltage electrical equipment is in normal operating condition.

[0075] Specifically, when the equipment is in normal condition, the system can output "normal operation" information and stop alarms to reduce unnecessary maintenance interventions.

[0076] Step S603: If the status score is greater than the third threshold and less than the fourth threshold, the low-voltage electrical equipment is determined to be in a potential risk state, and a first alarm message is generated.

[0077] Specifically, in a potentially risky situation, the equipment may have some problems, but they have not yet jeopardized safety. This alarm message can notify maintenance personnel to strengthen equipment monitoring and perform preventative maintenance.

[0078] Step S604: If the status score is greater than or equal to the fourth threshold, determine that the low-voltage electrical equipment is in an emergency fault state and generate a second alarm message.

[0079] Specifically, in the event of an emergency malfunction, rapid action must be taken to prevent equipment damage or safety accidents. This alarm message can trigger an automatic protection mechanism, initiate the equipment's emergency shutdown procedure, and notify relevant maintenance personnel for timely handling.

[0080] Through the above steps, intelligent fault diagnosis and condition monitoring of low-voltage electrical equipment are achieved. The setting of condition scores and their thresholds helps to effectively classify the operating status of the equipment, enabling the system to proactively manage and respond to potential electrical faults.

[0081] As one possible implementation, corresponding control commands are generated based on the fault type determined after troubleshooting, including:

[0082] Step 701: When the low-voltage electrical equipment is in normal operating condition, no corresponding control command is generated;

[0083] Specifically, the system does not intervene when the equipment is running normally, avoiding unnecessary resource consumption and operational hassles.

[0084] Step 702: If the low-voltage electrical equipment is in a potentially risky state, generate an alarm command;

[0085] Specifically, by generating alarm commands, operators and maintenance personnel can be notified of potential risks to the equipment, enabling close monitoring and preventative maintenance.

[0086] Step 703: In the event of an emergency fault in the low-voltage electrical equipment, generate alarm commands and isolation commands.

[0087] Specifically, in an emergency fault state, an alarm command is generated to immediately notify relevant personnel for emergency handling. Simultaneously, an isolation command is generated to ensure the equipment does not continue operating, preventing the fault from escalating and safety accidents from occurring. Execution of the isolation command may include disconnecting the power supply, stopping equipment operation, or other necessary emergency measures. Indicator lights displaying different operating statuses can also be used to help supervisors more clearly determine whether the low-voltage electrical equipment is in normal working condition.

[0088] To enable those skilled in the art to better understand the technical solution of this application, the implementation process of the safety protection method for low-voltage electrical equipment of this application will be described in detail below with reference to specific embodiments.

[0089] This embodiment relates to a specific safety protection method for low-voltage electrical equipment, including the following steps:

[0090] Step S1: Based on the type of low-voltage electrical equipment and its operating environment, select the safety protection module and detection module and install and connect them to the low-voltage electrical equipment;

[0091] Step S2: Initialize the installed safety protection module and detection module, and establish communication connection with the control module to debug the functions of each module, ensuring that they operate normally and can cooperate and coordinate with each other;

[0092] Step S3: The control detection module acquires the operating parameters of the low-voltage electrical equipment, including the power supply voltage, load resistance, grounding current and operating temperature.

[0093] Step S4: The control analysis control module calculates the overload current, leakage current, and short-circuit current based on the operating parameters. Based on the overload current, leakage current, short-circuit current, and operating temperature, it performs operating status diagnosis and generates a diagnostic report. The diagnostic report includes at least whether the low-voltage electrical equipment is operating normally.

[0094] Step S5: The control safety protection module receives the diagnostic report, performs fault troubleshooting through the fault troubleshooting algorithm, and generates corresponding control commands based on the fault type determined after fault troubleshooting. Based on the control commands, it regulates the low-voltage electrical equipment.

[0095] This embodiment provides a specific safety protection method for low-voltage electrical equipment, which realizes real-time monitoring and automatic fault detection of low-voltage electrical equipment, significantly improving the active and passive safety protection capabilities of the equipment. The system can quickly respond to various potential faults, issue alarm reminders in a timely manner, and take protective measures, effectively reducing the risk of safety accidents caused by equipment failure. At the same time, the system has good adaptability and can be reasonably configured and debugged according to different types and operating environments of low-voltage electrical equipment, further increasing scenario adaptability.

[0096] It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions, and although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0097] This application also provides a safety protection device for low-voltage electrical equipment. It should be noted that the safety protection device for low-voltage electrical equipment in this application can be used to execute the safety protection method for low-voltage electrical equipment provided in this application. This device is used to implement the above embodiments and preferred embodiments; details already described will not be repeated. As used below, the term "module" can refer to a combination of software and / or hardware that performs a predetermined function. Although the device described in the following embodiments is preferably implemented in software, hardware implementation, or a combination of software and hardware, is also possible and contemplated.

[0098] The following describes the safety protection device for low-voltage electrical equipment provided in the embodiments of this application.

[0099] Figure 3 This is a structural block diagram of a safety protection device for low-voltage electrical equipment according to an embodiment of this application. Figure 3 As shown, the device includes: a first control unit 10, a second control unit 20, and a third control unit 30.

[0100] The first control unit 10 is used to control the detection module to acquire the operating parameters of the low-voltage electrical equipment, including the power supply voltage, load resistance, grounding current and operating temperature.

[0101] Specifically, the detection module is used to monitor the power supply voltage, load resistance, three-phase current, grounding current, and operating temperature of low-voltage electrical equipment in real time, and transmit the detected data.

[0102] The second control unit 20 is used to control the analysis control module to calculate the overload current, leakage current, and short-circuit current based on the operating parameters, perform operating status diagnosis based on the overload current, leakage current, short-circuit current, and operating temperature, and generate a diagnostic report. The diagnostic report includes at least whether the low-voltage electrical equipment is operating normally.

[0103] Specifically, by analyzing operating parameters, it is determined whether the equipment is in normal working condition, providing a basis for the next step of safety protection.

[0104] The third control unit 30 is used to control the safety protection module to receive diagnostic reports, perform fault troubleshooting through fault troubleshooting algorithms, generate corresponding control commands based on the fault type determined after fault troubleshooting, and regulate low-voltage electrical equipment based on the control commands.

[0105] Specifically, based on the analysis results, a pre-defined fault-solving algorithm determines whether a fault exists. If a fault is found, a corresponding control command is sent to the safety protection module. The safety protection module then takes appropriate measures based on the control command to proactively protect the low-voltage electrical equipment. Through fault troubleshooting and equipment regulation, dangerous situations caused by equipment faults are effectively prevented, ensuring the safe operation of the equipment.

[0106] In summary, this safety protection device achieves comprehensive monitoring and protection of low-voltage electrical equipment through three steps: detection, analysis, and control. This method can promptly detect equipment anomalies and ensure safe operation, improving equipment lifespan and reliability through automated fault diagnosis and control.

[0107] Therefore, embodiments of this application provide a safety protection device for low-voltage electrical equipment, comprising a first control unit, a second control unit, and a third control unit. This application achieves real-time monitoring and automatic fault detection of low-voltage electrical equipment, significantly improving the active and passive safety protection capabilities of the equipment. The device can quickly respond to various potential faults, promptly issue alarms and take protective measures, effectively reducing the risk of safety accidents caused by equipment failures. It solves the problem in the prior art that low-voltage electrical equipment suffers from safety hazards such as overload, short circuit, leakage, and overheating, and that traditional safety protection measures cannot achieve real-time monitoring and rapid response.

[0108] As one possible implementation, the first control unit includes: a first computing module.

[0109] The first calculation module is used to obtain the current resistance value of the temperature sensor in the detection module to obtain a first resistance value, obtain a reference resistance value of the temperature sensor to obtain a second resistance value, and substitute the first resistance value and the second resistance value into a first preset formula. The operating temperature is obtained, where R sensorR is the first resistance value, R0 is the second resistance value, and T is the third resistance value. current This refers to the operating temperature.

[0110] Specifically, by calculating the operating temperature using the resistance value of a temperature sensor, the operating status of low-voltage electrical equipment can be monitored in real time, ensuring that the equipment operates within a safe temperature range. The advantage of this method is that it utilizes the physical characteristics of the sensor to quickly and accurately obtain the equipment's temperature information through simple resistance measurement and calculation.

[0111] As one possible implementation, the second control unit includes: a second computing module, a third computing module, and a fourth computing module.

[0112] The second calculation module is used to substitute the supply voltage and load resistance into the second preset formula. The overload current is obtained, where V supply For the supply voltage, I load For overload current, R load For load resistance;

[0113] Specifically, by calculating the exact value of the overload current, it can help identify whether the workload exceeds the rated threshold of the equipment, detect potential equipment overload problems early, ensure equipment safety, and prevent damage.

[0114] The third calculation module is used to substitute the A-phase current, B-phase current, C-phase current, and grounding current from the three-phase current into the third preset formula I. leak =I phase1 +I phase2 +I phase3 -I ground The leakage current is obtained, where I leak For leakage current, I phase1 Let I be the phase A current. phase2 For phase B current, I phase3 For phase C current, I ground It is the grounding current;

[0115] Specifically, calculating leakage current helps detect current leakage, such as insulation failure or electrical faults, allowing for proactive measures such as cutting off power or issuing alarms, thereby improving overall electrical safety.

[0116] The fourth calculation module is used to obtain the first equivalent resistance of low-voltage electrical equipment under short-circuit conditions, and substitute the first equivalent resistance and the supply voltage into the fourth preset formula. The short-circuit current is obtained, where I short Z is the short-circuit current. eq This is the first equivalent resistance.

[0117] Specifically, calculating short-circuit current can be used to monitor the system's status when a short circuit occurs, evaluate the system's protection functions, ensure that the power supply can be cut off in time in the event of a short circuit, prevent fires and equipment damage, and improve equipment safety.

[0118] As one possible implementation, the second control unit further includes: a first ratio module, a second ratio module, a third ratio module, and a fourth ratio module.

[0119] The first ratio module is used to calculate the ratio of the first preset current to the overload current to obtain the overload safety factor. If the overload safety factor is greater than the second threshold, it is determined that the low-voltage electrical equipment is not overloaded. If the overload safety factor is less than or equal to the second threshold, it is determined that the low-voltage electrical equipment is overloaded.

[0120] Specifically, by determining the overload safety factor, overload conditions of equipment can be detected and addressed in a timely manner, preventing equipment damage and safety accidents.

[0121] The second ratio module is used to calculate the ratio of the second preset current to the leakage current to obtain the leakage safety factor. If the leakage safety factor is less than the second threshold, it is determined that there is no leakage in the low-voltage electrical equipment. If the leakage safety factor is greater than or equal to the second threshold, it is determined that there is leakage in the low-voltage electrical equipment.

[0122] Specifically, by assessing the leakage current safety factor, the insulation condition of electrical equipment can be effectively detected, ensuring safe operation and reducing the risk of electric shock and fire.

[0123] The third ratio module is used to calculate the ratio of the third preset current to the short-circuit current to obtain the short-circuit safety factor. If the short-circuit safety factor is less than the second threshold, it is determined that there is no short circuit in the low-voltage electrical equipment. If the short-circuit safety factor is greater than or equal to the second threshold, it is determined that there is a short circuit in the low-voltage electrical equipment.

[0124] Specifically, calculating the short-circuit safety factor helps identify short-circuit risks in a circuit, ensuring that the equipment can cut off the power supply in time, thus protecting the equipment and personal safety.

[0125] The fourth ratio module is used to calculate the ratio of the preset temperature threshold to the operating temperature to obtain the overheating safety factor. If the overheating safety factor is less than the second threshold, it is determined that the low-voltage electrical equipment does not have an overheating phenomenon. If the overheating safety factor is greater than or equal to the second threshold, it is determined that the low-voltage electrical equipment has an overheating phenomenon.

[0126] Specifically, by judging the overheating safety factor, the overheating of the equipment can be detected in time, so as to take effective cooling or shutdown measures to prevent equipment failure or fire accidents caused by overheating.

[0127] As one possible implementation, the second control module also includes: a first state module, a second state module, a third state module, and a fourth state module.

[0128] The first state module is used to determine the corresponding first state parameter as 1 when there is an overload in the low-voltage electrical equipment, and to determine the corresponding first state parameter as 0 when there is no overload in the low-voltage electrical equipment.

[0129] Specifically, the first status parameter can clearly indicate whether the device is in an overload state, which facilitates subsequent report generation and status monitoring.

[0130] The second state module is used to determine the corresponding second state parameter as 1 when there is leakage in the low-voltage electrical equipment, and to determine the corresponding second state parameter as 0 when there is no leakage in the low-voltage electrical equipment.

[0131] Specifically, the second state parameter can accurately reflect whether the equipment is leaking current, providing an important basis for electrical safety.

[0132] The third state module is used to set the corresponding third state parameter to 1 when there is a short circuit in the low-voltage electrical equipment, and to set the corresponding third state parameter to 0 when there is no short circuit in the low-voltage electrical equipment.

[0133] Specifically, the third state parameter can indicate the short circuit status of the device, helping to identify and address potential circuit faults in a timely manner.

[0134] The fourth state module is used to set the corresponding fourth state parameter to 1 when the low-voltage electrical equipment is overheating, and to set the corresponding fourth state parameter to 0 when the low-voltage electrical equipment is not overheating.

[0135] Specifically, the fourth state parameter can reflect the temperature status of the equipment, preventing equipment damage or safety accidents caused by overheating.

[0136] As one possible implementation, the third control unit includes: a status scoring module, a first determination module, a second determination module, and a third determination module.

[0137] The state scoring module is used to substitute the first state parameter, the second state parameter, the second state parameter, the second state parameter, and the corresponding first weight, second weight, third weight, and fourth weight into the fifth preset formula D. output=w1D1+w2D2+w3D3+w4D4 to obtain the state score, where w1 is the first weight, D1 is the first state parameter, w2 is the second weight, D2 is the second state parameter, w3 is the third weight, D3 is the third state parameter, w4 is the fourth weight, and D4 is the fourth state parameter.

[0138] The first determining module is used to determine that the low-voltage electrical equipment is in normal operating condition when the state score is less than or equal to the third threshold.

[0139] Specifically, when the equipment is in normal condition, the system can output "normal operation" information and stop alarms to reduce unnecessary maintenance interventions.

[0140] The second determination module is used to determine that the low-voltage electrical equipment is in a potential risk state when the state score is greater than the third threshold and less than the fourth threshold, and to generate the first alarm information.

[0141] Specifically, in a potentially risky situation, the equipment may have some problems, but they have not yet jeopardized safety. This alarm message can notify maintenance personnel to strengthen equipment monitoring and perform preventative maintenance.

[0142] The third determination module is used to determine that the low-voltage electrical equipment is in an emergency fault state when the status score is greater than or equal to the fourth threshold, and to generate a second alarm message.

[0143] Specifically, in the event of an emergency malfunction, rapid action must be taken to prevent equipment damage or safety accidents. This alarm message can trigger an automatic protection mechanism, initiate the equipment's emergency shutdown procedure, and notify relevant maintenance personnel for timely handling.

[0144] As one possible implementation, the third control unit also includes: a first instruction unit, a second instruction unit, and a third instruction unit.

[0145] The first instruction unit is used to not generate corresponding control instructions when the low-voltage electrical equipment is in normal operating condition;

[0146] Specifically, the system does not intervene when the equipment is running normally, avoiding unnecessary resource consumption and operational hassles.

[0147] The second instruction unit is used to generate alarm instructions when low-voltage electrical equipment is in a potentially risky state.

[0148] Specifically, by generating alarm commands, operators and maintenance personnel can be notified of potential risks to the equipment, enabling close monitoring and preventative maintenance.

[0149] The third instruction unit is used to generate alarm instructions and isolation instructions when low-voltage electrical equipment is in an emergency fault state.

[0150] Specifically, in an emergency failure state, an alarm command is generated to immediately notify relevant personnel for emergency handling. Simultaneously, an isolation command is generated to ensure the equipment does not continue operating, preventing the failure from escalating and safety incidents from occurring. Execution of the isolation command may include disconnecting the power supply, stopping equipment operation, or other necessary emergency measures.

[0151] The safety protection device for the aforementioned low-voltage electrical equipment includes a processor and a memory. The first control unit, second control unit, and third control unit, etc., are all stored as program units in the memory, and the processor executes the program units stored in the memory to achieve the corresponding functions. All of the above modules are located in the same processor; alternatively, the above modules may be located in different processors in any combination.

[0152] The processor contains a kernel, which retrieves the corresponding program units from memory. One or more kernels can be configured, and communication efficiency can be improved by adjusting kernel parameters.

[0153] The memory may include non-permanent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM, and the memory includes at least one memory chip.

[0154] This invention provides a computer-readable storage medium including a stored program, wherein, when the program is executed, it controls the device containing the computer-readable storage medium to perform the safety protection method for low-voltage electrical equipment.

[0155] This invention provides a safety protection system for low-voltage electrical equipment, comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, and the one or more programs include methods for performing the aforementioned safety protection method for low-voltage electrical equipment.

[0156] It is obvious to those skilled in the art that the modules or steps of the present invention described above can be implemented using general-purpose computing devices. They can be centralized on a single computing device or distributed across a network of multiple computing devices. They can be implemented using computer-executable program code, and thus can be stored in a storage device for execution by a computing device. In some cases, the steps shown or described can be performed in a different order than those described herein, or they can be fabricated as separate integrated circuit modules, or multiple modules or steps can be fabricated as a single integrated circuit module. Thus, the present invention is not limited to any particular combination of hardware and software.

[0157] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0158] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0159] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0160] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0161] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0162] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, such as read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0163] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0164] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0165] As can be seen from the above description, the embodiments of this application achieve the following technical effects:

[0166] 1) The safety protection method for low-voltage electrical equipment disclosed in this application utilizes a control module that analyzes and determines the status of low-voltage electrical equipment based on overload, short circuit, leakage, and temperature detection data. The system then controls a safety protection module to execute alarm or power-off measures based on control module commands, achieving real-time monitoring and automatic fault detection of the equipment. This significantly enhances the active and passive safety protection capabilities of the equipment. The system can quickly respond to various potential faults, promptly issue alarms, and take protective measures, effectively reducing the risk of safety accidents caused by equipment failures. Furthermore, the system has good adaptability and can be rationally configured and debugged according to different types and operating environments of low-voltage electrical equipment, further increasing its scenario adaptability. This solves the problem in existing technologies where low-voltage electrical equipment suffers from safety hazards such as overload, short circuit, leakage, and overtemperature, and traditional safety protection measures cannot achieve real-time monitoring and rapid response.

[0167] 2) The safety protection device for low-voltage electrical equipment of this application includes: a first control unit, a second control unit, and a third control unit. This application realizes real-time monitoring and automatic fault detection of low-voltage electrical equipment, significantly improving the active and passive safety protection capabilities of the equipment. The device can quickly respond to various potential faults, promptly issue alarm reminders, and take protective measures, effectively reducing the risk of safety accidents caused by equipment failures. It solves the problem that existing low-voltage electrical equipment has safety hazards such as overload, short circuit, leakage, and overheating, and traditional safety protection measures cannot achieve real-time monitoring and rapid response.

[0168] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A safety protection method for low-voltage electrical equipment, characterized in that, The safety protection method is applied to a low-voltage electrical equipment safety protection system, which includes a detection module, an analysis and control module, and a safety protection module. These modules are communicatively connected, and the detection module is electrically connected to the low-voltage electrical equipment. The method includes: The detection module is controlled to acquire the operating parameters of the low-voltage electrical equipment, including the power supply voltage, load resistance, grounding current, and operating temperature. The analysis and control module calculates the overload current, leakage current, and short-circuit current based on the operating parameters, performs operating status diagnosis based on the overload current, leakage current, short-circuit current, and operating temperature, and generates a diagnostic report. The diagnostic report includes at least whether the low-voltage electrical equipment is operating normally. The safety protection module receives the diagnostic report, performs fault troubleshooting through a fault troubleshooting algorithm, and generates corresponding control commands based on the fault type determined after fault troubleshooting. Based on the control commands, it regulates the low-voltage electrical equipment. The diagnostic report generation includes: when the low-voltage electrical equipment is overloaded, the corresponding first state parameter is set to 1; when the low-voltage electrical equipment is not overloaded, the corresponding first state parameter is set to 0. When the low-voltage electrical equipment has a leakage phenomenon, the corresponding second state parameter is determined to be 1; when the low-voltage electrical equipment does not have the leakage phenomenon, the corresponding second state parameter is determined to be 0. When a short circuit occurs in the low-voltage electrical equipment, the corresponding third state parameter is set to 1; when the short circuit does not occur in the low-voltage electrical equipment, the corresponding third state parameter is set to 0. When the low-voltage electrical equipment is overheating, the corresponding fourth state parameter is set to 1; when the low-voltage electrical equipment is not overheating, the corresponding fourth state parameter is set to 0. The control module receives the diagnostic report and performs troubleshooting using a troubleshooting algorithm, including: substituting the first state parameter, the second state parameter, the second state parameter, the second state parameter, and the corresponding first weight, second weight, third weight, and fourth weight into a fifth preset formula. The status score is obtained, where For the first weight, The first state parameter, This is the second weight. This is the second state parameter. For the third weight, The third state parameter, For the fourth weight, This refers to the fourth state parameter; If the status score is less than or equal to the third threshold, the low-voltage electrical equipment is determined to be in normal operating condition. If the status score is greater than the third threshold and less than the fourth threshold, the low-voltage electrical equipment is determined to be in a potential risk state, and a first alarm message is generated. If the status score is greater than or equal to the fourth threshold, the low-voltage electrical equipment is determined to be in an emergency fault state, and a second alarm message is generated.

2. The method according to claim 1, characterized in that, Controlling the detection module to acquire the operating parameters of the low-voltage electrical equipment includes: Obtain the current resistance value of the temperature sensor in the detection module to obtain a first resistance value; obtain the reference resistance value of the temperature sensor to obtain a second resistance value; substitute the first resistance value and the second resistance value into a first preset formula. The operating temperature is obtained, wherein, The first resistance value, This is the second resistance value. The operating temperature is [value].

3. The method according to claim 2, characterized in that, The analysis and control module calculates the overload current, leakage current, and short-circuit current based on the operating parameters, including: Substitute the supply voltage and the load resistance into the second preset formula. The overload current is obtained, wherein, The power supply voltage, The overload current, The load resistance; Substitute the phase A current, phase B current, phase C current, and the grounding current into the third preset formula. The leakage current is obtained, wherein, The leakage current is... The current of phase A is... The current of phase B, The current of phase C is... The grounding current; Obtain the first equivalent resistance of the low-voltage electrical equipment under short-circuit conditions, and substitute the first equivalent resistance and the supply voltage into the fourth preset formula. The short-circuit current is obtained, wherein, The short-circuit current, This is the first equivalent resistance.

4. The method according to claim 1, characterized in that, Operational status diagnostics are performed based on the overload current, leakage current, short-circuit current, and operating temperature to determine whether the low-voltage electrical equipment is operating normally, including: Calculate the ratio of the first preset current to the overload current to obtain the overload safety factor. If the overload safety factor is greater than the second threshold, it is determined that the low-voltage electrical equipment is not overloaded. If the overload safety factor is less than or equal to the second threshold, it is determined that the low-voltage electrical equipment is overloaded. Calculate the ratio of the second preset current to the leakage current to obtain the leakage safety factor. If the leakage safety factor is less than the second threshold, it is determined that the low-voltage electrical equipment does not have leakage. If the leakage safety factor is greater than or equal to the second threshold, it is determined that the low-voltage electrical equipment has leakage. Calculate the ratio of the third preset current to the short-circuit current to obtain the short-circuit safety factor. If the short-circuit safety factor is less than the second threshold, it is determined that the low-voltage electrical equipment does not have a short circuit. If the short-circuit safety factor is greater than or equal to the second threshold, it is determined that the low-voltage electrical equipment has a short circuit. The ratio of the preset temperature threshold to the operating temperature is calculated to obtain the overheating safety factor. If the overheating safety factor is less than the second threshold, it is determined that the low-voltage electrical equipment does not have an overheating phenomenon. If the overheating safety factor is greater than or equal to the second threshold, it is determined that the low-voltage electrical equipment has the overheating phenomenon.

5. The method according to claim 1, characterized in that, Based on the fault type determined after troubleshooting, generate corresponding control commands, including: When the low-voltage electrical equipment is in the normal operating state, no corresponding control command is generated; If the low-voltage electrical equipment is in the state of potential risk, an alarm command is generated; When the low-voltage electrical equipment is in an emergency fault state, the alarm command and isolation command are generated.

6. A safety protection device for low-voltage electrical equipment, characterized in that, The safety protection device is applied to a low-voltage electrical equipment safety protection system, which includes a detection module, an analysis and control module, and a safety protection module. These modules are communicatively connected. The detection module is electrically connected to the low-voltage electrical equipment. The device includes: The first control unit is used to control the detection module to acquire the operating parameters of the low-voltage electrical equipment, including the power supply voltage, load resistance, grounding current and operating temperature; The second control unit is used to control the analysis and control module to calculate the overload current, leakage current, and short-circuit current based on the operating parameters, and to perform operating status diagnosis based on the overload current, leakage current, short-circuit current, and operating temperature, and generate a diagnostic report. The diagnostic report includes at least whether the low-voltage electrical equipment is operating normally. The third control unit is used to control the safety protection module to receive the diagnostic report, perform fault troubleshooting through the fault troubleshooting algorithm, generate corresponding control instructions based on the fault type determined after fault troubleshooting, and regulate the low-voltage electrical equipment based on the control instructions. The second control unit includes: a first state module, configured to determine the corresponding first state parameter as 1 when the low-voltage electrical equipment is overloaded, and to determine the corresponding first state parameter as 0 when the low-voltage electrical equipment is not overloaded. The second state module is used to determine the corresponding second state parameter as 1 when there is a leakage phenomenon in the low-voltage electrical equipment, and to determine the corresponding second state parameter as 0 when there is no leakage phenomenon in the low-voltage electrical equipment. The third state module is used to determine the corresponding third state parameter as 1 when the low-voltage electrical equipment has a short circuit, and to determine the corresponding third state parameter as 0 when the low-voltage electrical equipment does not have the short circuit. The fourth state module is used to determine the corresponding fourth state parameter as 1 when the low-voltage electrical equipment is overheating, and to determine the corresponding fourth state parameter as 0 when the low-voltage electrical equipment is not overheating. The third control unit includes: a state scoring module, used to substitute the first state parameter, the second state parameter, the second state parameter, the second state parameter, and the corresponding first weight, second weight, third weight, and fourth weight into a fifth preset formula. The status score is obtained, where For the first weight, The first state parameter, This is the second weight. This is the second state parameter. For the third weight, The third state parameter, For the fourth weight, This refers to the fourth state parameter; The first determining module is used to determine that the low-voltage electrical equipment is in normal operating condition when the state score is less than or equal to the third threshold. The second determining module is used to determine that the low-voltage electrical equipment is in a potential risk state when the state score is greater than the third threshold and less than the fourth threshold, and generate a first alarm message. The third determining module is used to determine that the low-voltage electrical equipment is in an emergency fault state when the state score is greater than or equal to the fourth threshold, and generate a second alarm message.

7. A computer-readable storage medium, characterized in that, The computer-readable storage medium includes a stored program, wherein, when the program is executed, it controls the device on which the computer-readable storage medium is located to perform the method according to any one of claims 1 to 5.

8. A safety protection system for low-voltage electrical equipment, characterized in that, include: One or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the one or more processors, the one or more programs comprising methods for performing any one of claims 1 to 5.

Images