Safety protection method and device for low-voltage electrical equipment

Abstract

The invention provides a safety protection method and device for low-voltage electrical equipment. The safety protection system for the low-voltage electrical equipment comprises a detection module, an analysis control module and a safety protection module, all the modules are in communication connection, and the detection module is electrically connected with the low-voltage electrical equipment. The control module detects and analyzes data and judges states through overload, short circuit, electric leakage and temperature, and controls the safety protection module to execute alarm or power cut-off measures based on instructions of the control module, so that comprehensive judgment of system faults is realized, equipment hidden dangers are discovered as early as possible, accident risks of low-voltage electrical equipment are reduced, and safety of the low-voltage electrical equipment is ensured. The problems that in the prior art, low-voltage electrical equipment has potential safety hazards such as overload, short circuit, electric leakage and over-temperature, and real-time monitoring and quick response cannot be achieved through traditional safety protection measures are solved.

Description

Technical Field

[0001] The present invention relates to electrical equipment protection technology, and in particular 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 Art

[0002] In modern industry and daily life, the widespread use of low-voltage electrical equipment has provided great convenience for our production and life. However, with the high integration and increased power of electrical equipment, its safety hazards have gradually emerged. Faults such as overload, short circuit, leakage, overheating, etc. may not only cause equipment damage, 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, and pose great safety risks. In addition, existing equipment protection technologies mainly focus on monitoring the root cause of single faults, such as overload or short circuit, and the comprehensive judgment and early warning mechanism for multiple faults has not been fully studied and applied. Therefore, it is particularly important to develop a safety protection system that can monitor and actively protect low-voltage electrical equipment in real time. Summary of the invention

[0004] The main purpose of the present application is to provide 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, so as to at least solve the problem that low-voltage electrical equipment in the prior art has safety hazards such as overload, short circuit, leakage, overheating, etc., and traditional safety protection measures cannot achieve real-time monitoring and rapid response.

[0005] In order to achieve the above-mentioned purpose, according to one aspect of the present application, a safety protection method for low-voltage electrical equipment is provided, and the safety protection method is applied to a safety protection system for low-voltage electrical equipment, and the safety protection system for low-voltage electrical equipment 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. The method includes: controlling the detection module to obtain operating parameters of the low-voltage electrical equipment, and the operating parameters include power 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, and performing operating status diagnosis based on the overload current, leakage current, short-circuit current, and operating temperature, and generating a diagnosis report, wherein the diagnosis report at least includes whether the low-voltage electrical equipment is operating normally; controlling the safety protection module to receive the diagnosis report and perform troubleshooting through a troubleshooting algorithm, and generate corresponding control instructions according to the fault type determined after troubleshooting, and regulating the low-voltage electrical equipment based on the control instructions.

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

[0007] Optionally, controlling the analysis 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 is the supply voltage, I load is the overload current, R load is the load resistance; the A phase current, the B phase current, the C phase current and the ground current are substituted into the third preset formula I leak =I phase1 +I phase2 +I phase3 -I ground , and obtain the leakage current, where I leak is the leakage current, I phase1 is the A phase current, I phase2 is the B phase current, I phase3 is the C phase current, I groundis the grounding current; obtaining the first equivalent resistance of the low-voltage electrical equipment in the short-circuit state, substituting the first equivalent resistance and the supply voltage into the fourth preset formula The short-circuit current is obtained, where I short is the short-circuit current, Z eq is the first equivalent resistance.

[0008] Optionally, an operating status diagnosis is performed based on the overload current, the leakage current, the short-circuit current and the operating temperature to determine whether the low-voltage electrical equipment is operating normally, including: calculating the ratio of a first preset current to the overload current to obtain an overload safety factor, and when the overload safety factor is greater than a second threshold, determining that the low-voltage electrical equipment is not overloaded, and when the overload safety factor is less than or equal to the second threshold, determining that the low-voltage electrical equipment is overloaded; calculating the ratio of a second preset current to the leakage current to obtain a leakage safety factor, and when the leakage safety factor is less than the second threshold, determining that the low-voltage electrical equipment is not leaking, and when the leakage safety factor is greater than or equal to the second threshold, determining that the low-voltage electrical equipment is overloaded. When the second threshold is reached, it is determined that the low-voltage electrical equipment has leakage; the ratio of a third preset current to the short-circuit current is calculated to obtain a short-circuit safety factor; when 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 phenomenon; when 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 phenomenon; the ratio of a preset temperature threshold to the operating temperature is calculated to obtain an overheating safety factor; when 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; when 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.

[0009] Optionally, a diagnostic report is generated, including: when the low-voltage electrical equipment has the overload phenomenon, the corresponding first state parameter is determined to be 1, and when the low-voltage electrical equipment does not have the overload phenomenon, the corresponding first state parameter is determined to be 0; when the low-voltage electrical equipment has the leakage phenomenon, the corresponding second state parameter is determined to be 1, and when the low-voltage electrical equipment does not have the leakage phenomenon, the corresponding second state parameter is determined to be 0; when the low-voltage electrical equipment has the short-circuit phenomenon, the corresponding third state parameter is determined to be 1, and when the low-voltage electrical equipment does not have the short-circuit phenomenon, the corresponding third state parameter is determined to be 0; when the low-voltage electrical equipment has the overheating phenomenon, the corresponding fourth state parameter is determined to be 1, and when the low-voltage electrical equipment does not have the overheating phenomenon, the corresponding fourth state parameter is determined to be 0.

[0010] Optionally, controlling the security protection module to receive the diagnostic report and perform troubleshooting through a troubleshooting algorithm includes: 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 =w1D1+w2D2+w3D3+w4D4 to obtain a status score, wherein 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; when the status score is less than or equal to the third threshold, it is determined that the low-voltage electrical equipment is in a normal operating state; when the status score is greater than the third threshold and less than the fourth threshold, it is determined that the low-voltage electrical equipment is in a potential risk state, and a first alarm message is generated; when the status score is greater than or equal to the fourth threshold, it is determined that the low-voltage electrical equipment is in an emergency fault state, and a second alarm message is generated.

[0011] Optionally, corresponding control instructions are generated according to the fault type determined after troubleshooting, including: when the low-voltage electrical equipment is in the normal operating state, no corresponding control instructions are generated; when the low-voltage electrical equipment is in the potential risk state, an alarm instruction is generated; when the low-voltage electrical equipment is in the emergency fault state, the alarm instruction and isolation instruction are generated.

[0012] According to another aspect of the present application, a safety protection device for low-voltage electrical equipment is provided, and the safety protection device is applied to a safety protection system for low-voltage electrical equipment. The safety protection system for low-voltage electrical equipment 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. The device includes: a first control unit, which is used to control the detection module to obtain operating parameters of the low-voltage electrical equipment, and the operating parameters include power supply voltage, load resistance, grounding current, and operating temperature; a second control unit, which is used to control the analysis and control module to calculate 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 diagnosis report, and the diagnosis report at least includes whether the low-voltage electrical equipment is operating normally; a third control unit, which is used to control the safety protection module to receive the diagnosis report, perform troubleshooting through a troubleshooting algorithm, and generate corresponding control instructions according to the fault type determined after troubleshooting, and regulate the low-voltage electrical equipment based on the control instructions.

[0013] According to another aspect of the present application, a computer-readable storage medium is provided, wherein the computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute any one of the methods described.

[0014] According to another aspect of the present 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 are configured to be executed by the one or more processors, and the one or more programs include methods for executing any one of the described methods.

[0015] By applying the technical solution of the present application, a safety protection method for low-voltage electrical equipment is provided, and the safety protection method is applied to a safety protection system for low-voltage electrical equipment, and the safety protection system for low-voltage electrical equipment 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. The method includes: first, controlling the detection module to obtain the operating parameters of the low-voltage electrical equipment, and the operating parameters include power supply voltage, load resistance, grounding current, and operating temperature; then controlling the analysis and control module to calculate the overload current, leakage current, and short-circuit current based on the operating parameters, and performing operating status diagnosis based on the overload current, leakage current, short-circuit current, and operating temperature, and generating a diagnosis report, wherein the diagnosis report at least includes whether the low-voltage electrical equipment is operating normally; finally, controlling the safety protection module to receive the diagnosis report and perform troubleshooting through a troubleshooting algorithm, and generating corresponding control instructions according to the fault type determined after troubleshooting, and regulating the low-voltage electrical equipment based on the control instructions. The present application realizes a comprehensive judgment of system faults by controlling the control module to detect and analyze data including overload, short circuit, leakage and temperature and judge the status, and controlling the safety protection module to execute alarm or power cut-off measures based on the control module instructions, thereby ensuring early discovery of equipment hidden dangers and reducing the risk of accidents of low-voltage electrical equipment. It solves the problem that in the prior art, low-voltage electrical equipment has safety hazards such as overload, short circuit, leakage and overtemperature, and traditional safety protection measures cannot achieve real-time monitoring and rapid response. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0017] Figure 2 A schematic flow chart of a safety protection method for low-voltage electrical equipment provided according to an embodiment of the present 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 the present application is shown.

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

[0020] 102, processor; 104, memory; 106, transmission device; 108, input and output devices. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] In order to enable those skilled in the art to better understand the solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work 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 and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described here. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0024] As introduced in the background technology, low-voltage electrical equipment in the prior art has safety hazards such as overload, short circuit, leakage, overheating, etc. In order to solve the problem that traditional safety protection measures cannot achieve real-time monitoring and rapid response, the embodiments of the present application provide 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.

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

[0026] The method embodiments provided in the embodiments of the present application can be executed in a mobile terminal, a computer terminal or a similar computing device. Taking running on a mobile terminal as an example, Figure 1 FIG. 1 is a hardware structure block diagram of a mobile terminal of a safety protection method for low-voltage electrical equipment according to an embodiment of the present invention. Figure 1 As shown, the mobile terminal may include one or more ( Figure 1 Only one is shown in the figure) a processor 102 (the processor 102 may include but is not limited to a processing device such as a microprocessor MCU or a programmable logic device FPGA) and a memory 104 for storing data, wherein the mobile terminal may also include a transmission device 106 and an input / output device 108 for communication functions. It can be understood by those skilled in the art that Figure 1 The structure shown is only for illustration and does not limit the structure of the mobile terminal. Figure 1 More or fewer components as shown, or with Figure 1 Different configurations are shown.

[0027] The memory 104 can be used to store computer programs, for example, software programs and modules of application software, such as the computer program corresponding to the display method of device information in the embodiment of the present invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, that is, the above method is implemented. The memory 104 may include a high-speed random access memory, and may also include a non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 104 may further include a memory remotely arranged relative to the processor 102, and these remote memories can be connected to the mobile terminal via a network. Examples of the above-mentioned network include but are not limited to the Internet, an intranet, a local area network, a mobile communication network, and a combination thereof. The transmission device 106 is used to receive or send data via a network. The above-mentioned specific examples of the network may include a wireless network provided by a communication provider of the mobile terminal. In one example, the transmission device 106 includes a network adapter (Network Interface Controller, referred to as NIC), which can be connected to other network devices through a base station so as 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] In this embodiment, a safety protection method for low-voltage electrical equipment running on a mobile terminal, a computer terminal or a similar computing device is provided. It should be noted that the steps shown in the flowchart of 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 an order different from that shown here.

[0029] Figure 2 It is a flow chart of a safety protection method for low-voltage electrical equipment according to an embodiment of the present application. The safety protection method is applied to a safety protection system for low-voltage electrical equipment, which includes a detection module, an analysis and control module, and a safety protection module. The modules are connected in communication, and the detection module is electrically connected to the low-voltage electrical equipment.

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

[0031] Step S201, controlling the detection module to obtain operating parameters of the low-voltage electrical equipment, the operating parameters including supply voltage, load resistance, ground current and operating temperature;

[0032] Specifically, the detection module is used to monitor the power supply voltage, load resistance, three-phase current, ground current and operating temperature of the 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 diagnosis report, which at least includes whether the low-voltage electrical equipment is operating normally;

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

[0035] Step S203, the control safety protection module receives the diagnosis report and performs troubleshooting through a troubleshooting algorithm, generates corresponding control instructions according to the fault type determined after troubleshooting, and regulates the low-voltage electrical equipment based on the control instructions.

[0036] Specifically, based on the analysis results, the set fault elimination algorithm is used to determine whether there is a fault. If there is a fault, a corresponding control instruction is issued to the safety protection module. The safety protection module takes corresponding measures according to the control instruction to achieve the effect of actively protecting low-voltage electrical equipment. Through fault elimination and equipment regulation, dangerous situations caused by equipment failures can be effectively prevented to ensure the safe operation of the equipment.

[0037] Before the detection module is tested, the system will select the appropriate safety protection module and detection module to install and connect with the low-voltage electrical equipment according to the type and operating environment of the low-voltage electrical equipment, such as a larger range and waterproof and dustproof functions. The installed safety protection module and detection module are initialized and connected to the analysis and control module for communication and debugging of the functions of each module to ensure that they maintain normal communication and can cooperate and coordinate with each other, so as to protect 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 regulation. This method can detect abnormal conditions of equipment in a timely manner, and through automated troubleshooting and regulation, ensure the safe operation of the equipment and improve the service life and reliability of the equipment.

[0039] It can be seen that the embodiment of the present application provides a safety protection method for low-voltage electrical equipment. The present application uses the control module to detect and analyze data including overload, short circuit, leakage and temperature and judge the status. By controlling the safety protection module to execute alarm or power-off measures based on the control module instructions, the real-time monitoring and automatic fault detection of low-voltage electrical equipment are realized, which significantly improves the active and passive safety protection capabilities of the equipment. The system can quickly respond to various potential faults, issue alarm reminders in time and take protective measures, effectively reducing the risk of safety accidents caused by equipment failures. At the same time, the system has good adaptability and can be reasonably configured and debugged according to low-voltage electrical equipment of different types and operating environments, further increasing the adaptability of the scene. It solves the problem that low-voltage electrical equipment in the prior art has safety hazards such as overload, short circuit, leakage, overheating, etc., and traditional safety protection measures cannot achieve real-time monitoring and rapid response.

[0040] As a possible implementation method, the control detection module obtains 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, and substitute the first resistance value and the second resistance value into the first preset formula Get the operating temperature, where R sensor is the first resistance, R0 is the second resistance, T current is the operating temperature.

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

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

[0044] Step S301, substituting the supply voltage and the load resistance into the second preset formula Get the overload current, where V supply is the supply voltage, I load is the overload current, R load is the load resistance;

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

[0046] Step S302: Substitute the A-phase current, the B-phase current, the C-phase current and the ground current in the three-phase current into the third preset formula I leak =I phase1 +I phase2 +I phas3e -I ground , and the leakage current is obtained, where I leak is the leakage current, I phase1 is the phase A current, I phase2 is the B phase current, I phase3 is the C phase current, I ground is the ground current;

[0047] Specifically, the calculation of leakage current helps detect current leakage conditions, such as insulation failure or electrical faults, so that measures can be taken in advance, such as cutting off power or sounding an alarm, improving overall electrical safety.

[0048] Step S303, obtaining the first equivalent resistance of the low-voltage electrical device in the short-circuit state, and substituting the first equivalent resistance and the supply voltage into the fourth preset formula The short-circuit current is obtained, where I short is the short-circuit current, Z eq is the first equivalent resistance.

[0049] Specifically, calculating the short-circuit current can be used to monitor the status of the system when a short circuit occurs, evaluate the protection function of the system, ensure that the power supply can be cut off in time in the event of a short circuit, prevent fire 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. These real-time data can be used for equipment status monitoring and fault diagnosis, providing necessary protection for low-voltage electrical equipment.

[0051] As a possible implementation method, operating status diagnosis is performed based on overload current, leakage current, short-circuit current and operating temperature to determine whether the low-voltage electrical equipment is operating normally, including:

[0052] Step S401, calculating the ratio of the first preset current to the overload current to obtain an overload safety factor, and determining that the low-voltage electrical equipment is not overloaded when the overload safety factor is greater than a second threshold value, and determining that the low-voltage electrical equipment is overloaded when the overload safety factor is less than or equal to the second threshold value;

[0053] Specifically, by judging the overload safety factor, the overload condition of the equipment can be discovered and handled in a timely manner, preventing equipment damage and safety accidents.

[0054] Step S402, calculating the ratio of the second preset current to the leakage current to obtain a leakage safety factor, and determining that there is no leakage in the low-voltage electrical equipment when the leakage safety factor is less than a second threshold value, and determining that there is leakage in the low-voltage electrical equipment when the leakage safety factor is greater than or equal to the second threshold value;

[0055] Specifically, by determining the leakage safety factor, the insulation condition of electrical equipment can be effectively detected to ensure safe operation and reduce the risk of electric shock and fire.

[0056] Step S403, calculating the ratio of the third preset current to the short-circuit current to obtain a short-circuit safety factor, and determining that the low-voltage electrical equipment does not have a short-circuit phenomenon when the short-circuit safety factor is less than a second threshold value, and determining that the low-voltage electrical equipment has a short-circuit phenomenon when the short-circuit safety factor is greater than or equal to the second threshold value;

[0057] Specifically, the calculation of the short-circuit safety factor can help identify short-circuit risks in the circuit, ensuring that the equipment can cut off power supply in time to protect 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. When the overheating safety factor is less than the second threshold, it is determined that the low-voltage electrical equipment does not have overheating. When the overheating safety factor is greater than or equal to the second threshold, it is determined that the low-voltage electrical equipment has overheating.

[0059] Specifically, by determining the overheat safety factor, the overheating of the equipment can be discovered in time, so that effective cooling or shutdown measures can be taken 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 timely identify potential problems such as overload, leakage, short circuit and overheating, ensure the safe operation of the equipment, and improve the reliability and safety of the system. For equipment that does not operate normally, the system can actively issue an alarm or take protective measures to protect the safety of the equipment and its operators. This approach will provide strong support for the management and maintenance of low-voltage electrical equipment, effectively reducing the failure rate and maintenance costs.

[0061] As a possible implementation, a diagnostic report is generated, including:

[0062] Step S501, when the low-voltage electrical equipment is overloaded, the corresponding first state parameter is determined to be 1, and when the low-voltage electrical equipment is not overloaded, the corresponding first state parameter is determined to be 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, when there is leakage in the low-voltage electrical equipment, the corresponding second state parameter is determined to be 1, and when there is no leakage in the low-voltage electrical equipment, the corresponding second state parameter is determined to be 0;

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

[0066] Step S503, when there is a short circuit in the low-voltage electrical equipment, the corresponding third state parameter is determined to be 1, and when there is no short circuit in the low-voltage electrical equipment, the corresponding third state parameter is determined to be 0;

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

[0068] Step S504: when the low-voltage electrical equipment is overheated, the corresponding fourth state parameter is determined to be 1; when the low-voltage electrical equipment is not overheated, the corresponding fourth state parameter is determined to be 0.

[0069] Specifically, the fourth state parameter can reflect the temperature state of the device and prevent device damage or safety accidents caused by overheating.

[0070] In summary, a diagnostic report containing key status parameters can be generated. This report can fully reflect the operating status of low-voltage electrical equipment, including whether it is overloaded, leaking, short-circuited or overheated. These status parameters not only make it easier for maintenance personnel to quickly understand the equipment status, but can also serve as input to the automation system to trigger corresponding protection or alarm mechanisms. In addition, this standardized report format also helps to achieve remote monitoring and data analysis of equipment status, further improving the efficiency and safety of equipment management.

[0071] As a possible implementation method, the control safety protection module receives the diagnostic report and performs troubleshooting through 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, wherein 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, D4 is the fourth state parameter;

[0073] Specifically, by calculating the status score, the system can comprehensively consider the impact of different abnormal conditions on the health of the equipment, thereby obtaining a comprehensive evaluation value. In the specific implementation process, in order to adapt to the alarm conditions and fault conditions of different low-voltage electrical equipment, the supervisor can manually set or dynamically adjust the values ​​of w1, w2, w3, and w4 according to the working conditions of the low-voltage electrical equipment, thereby adjusting the detection and judgment weights for fault identification between each step, so as to make the identification of alarms and faults more accurate, reduce the occurrence of shutdowns caused by false alarms, and further increase the adaptability of the scene.

[0074] Step S602: when the status score is less than or equal to the third threshold, determining that the low-voltage electrical equipment is in a normal operating state;

[0075] Specifically, when the equipment status is normal, the system can output "normal operation" information and stop alarming to reduce unnecessary maintenance intervention.

[0076] Step S603: when 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 potential risk state, the equipment may have some problems, but has not yet endangered safety. The alarm information can notify maintenance personnel to strengthen equipment monitoring and perform preventive maintenance.

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

[0079] Specifically, in an emergency fault state, quick measures must be taken to avoid equipment damage or safety accidents. The alarm information can trigger the automatic protection mechanism, start the emergency shutdown procedure of the equipment, and notify the relevant maintenance personnel to handle it in time.

[0080] Through the above steps, intelligent troubleshooting 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 so that the system can proactively manage and respond to potential electrical faults.

[0081] As a possible implementation method, a corresponding control instruction is generated according to the fault type determined after troubleshooting, including:

[0082] Step 701: when the low-voltage electrical equipment is in a normal operating state, no corresponding control instruction is generated;

[0083] Specifically, when the device is operating normally, the system does not perform any intervention, avoiding unnecessary resource consumption and operational troubles.

[0084] Step 702, when the low-voltage electrical equipment is in a potential risk state, generating an alarm instruction;

[0085] Specifically, by generating an alarm instruction, operation and maintenance personnel can be notified of potential risks to the equipment so that close monitoring and preventive maintenance can be carried out.

[0086] Step 703: When the low-voltage electrical equipment is in an emergency fault state, an alarm instruction and an isolation instruction are generated.

[0087] Specifically, in the case of an emergency fault, an alarm instruction is generated to immediately notify relevant personnel for emergency processing. At the same time, an isolation instruction is generated to ensure that the equipment does not operate further to prevent the fault from expanding and safety accidents from occurring. The execution of the isolation instruction may include disconnecting the power supply, stopping the operation of the equipment, or other necessary emergency measures. At the same time, indicator lights that display different working states can be used to enable supervisors to more clearly determine whether the low-voltage electrical equipment is in normal working condition.

[0088] In order to enable those skilled in the art to more clearly understand the technical solution of the present application, the implementation process of the safety protection method for low-voltage electrical equipment of the present application will be described in detail below in combination with specific embodiments.

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

[0090] Step S1: Select a safety protection module and a detection module to be installed and connected to the low-voltage electrical equipment according to the type and operating environment of the low-voltage electrical equipment;

[0091] Step S2: Initialize the installed security protection module and detection module, and communicate with the control module to debug the functions of each module to ensure their normal operation and mutual cooperation and coordination;

[0092] Step S3: Control the detection module to obtain operating parameters of the low-voltage electrical equipment, the operating parameters including supply voltage, load resistance, ground 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, performs operating status diagnosis based on the overload current, leakage current, short-circuit current, and operating temperature, and generates a diagnosis report, which at least includes whether the low-voltage electrical equipment is operating normally;

[0094] Step S5: The control safety protection module receives the diagnosis report and performs troubleshooting through a troubleshooting algorithm, generates corresponding control instructions according to the fault type determined after troubleshooting, and regulates the low-voltage electrical equipment based on the control instructions.

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

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

[0097] The embodiment of the present 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 the embodiment of the present application can be used to execute the safety protection method for low-voltage electrical equipment provided in the embodiment of the present application. The device is used to implement the above-mentioned embodiments and preferred implementation modes, and the descriptions that have been made will not be repeated. As used below, the term "module" can implement a combination of software and / or hardware for a predetermined function. Although the device described in the following embodiments is preferably implemented in software, the implementation of hardware, or a combination of software and hardware, is also possible and conceived.

[0098] The following is an introduction to the safety protection device for low-voltage electrical equipment provided in an embodiment of the present application.

[0099] Figure 3 1 is a structural block diagram of a safety protection device for low-voltage electrical equipment according to an embodiment of the present 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] A first control unit 10, used to control the detection module to obtain operating parameters of the low-voltage electrical equipment, the operating parameters including supply voltage, load resistance, ground current and operating temperature;

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

[0102] A 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 diagnosis report, which at least includes whether the low-voltage electrical equipment is operating normally;

[0103] Specifically, by analyzing the operating parameters, we can determine 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 the diagnosis report and perform troubleshooting through the troubleshooting algorithm, and generate corresponding control instructions according to the fault type determined after troubleshooting, and regulate the low-voltage electrical equipment based on the control instructions.

[0105] Specifically, based on the analysis results, the set fault elimination algorithm is used to determine whether there is a fault. If there is a fault, a corresponding control instruction is issued to the safety protection module. The safety protection module takes corresponding measures according to the control instruction to achieve the effect of actively protecting low-voltage electrical equipment. Through fault elimination and equipment regulation, dangerous situations caused by equipment failures can be effectively prevented to ensure the safe operation of the equipment.

[0106] In summary, the safety protection device achieves comprehensive monitoring and protection of low-voltage electrical equipment through three steps: detection, analysis and regulation. This method can detect abnormal conditions of equipment in a timely manner, and through automated troubleshooting and regulation, ensure the safe operation of the equipment and improve the service life and reliability of the equipment.

[0107] It can be seen that the embodiment of the present application provides a safety protection device for low-voltage electrical equipment, which includes: a first control unit, a second control unit and a third control unit. The present 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, issue alarm reminders in time and take protective measures, effectively reducing the risk of safety accidents caused by equipment failures. It solves the problem that low-voltage electrical equipment in the prior art has safety hazards such as overload, short circuit, leakage, overheating, etc., and traditional safety protection measures cannot achieve real-time monitoring and rapid response.

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

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

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

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

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

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

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

[0115] Specifically, the calculation of leakage current helps detect current leakage conditions, such as insulation failure or electrical faults, so that measures can be taken in advance, such as cutting off power or sounding an alarm, improving overall electrical safety.

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

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

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

[0119] A first ratio module is used to calculate the ratio of the first preset current to the overload current to obtain an overload safety factor, and when the overload safety factor is greater than a second threshold, it is determined that the low-voltage electrical equipment does not have an overload phenomenon, and when the overload safety factor is less than or equal to the second threshold, it is determined that the low-voltage electrical equipment has an overload phenomenon;

[0120] Specifically, by judging the overload safety factor, the overload condition of the equipment can be discovered and handled in a timely manner, preventing equipment damage and safety accidents.

[0121] A second ratio module is used to calculate the ratio of the second preset current to the leakage current to obtain a leakage safety factor. When the leakage safety factor is less than a second threshold, it is determined that there is no leakage in the low-voltage electrical equipment. When 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 determining the leakage safety factor, the insulation condition of electrical equipment can be effectively detected to ensure safe operation and reduce the risk of electric shock and fire.

[0123] a third ratio module, used to calculate the ratio of the third preset current to the short-circuit current to obtain a short-circuit safety factor, and to determine that the low-voltage electrical equipment does not have a short-circuit phenomenon when the short-circuit safety factor is less than a second threshold value, and to determine that the low-voltage electrical equipment has a short-circuit phenomenon when the short-circuit safety factor is greater than or equal to the second threshold value;

[0124] Specifically, the calculation of the short-circuit safety factor can help identify short-circuit risks in the circuit, ensuring that the equipment can cut off power supply in time to protect 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 an overheating safety factor. When the overheating safety factor is less than the second threshold, it is determined that the low-voltage electrical equipment does not have overheating. When the overheating safety factor is greater than or equal to the second threshold, it is determined that the low-voltage electrical equipment has overheating.

[0126] Specifically, by determining the overheat safety factor, the overheating of the equipment can be discovered in time, so that effective cooling or shutdown measures can be taken to prevent equipment failure or fire accidents caused by overheating.

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

[0128] A first state module is used 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;

[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] A 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 has leakage, providing an important basis for electrical safety.

[0132] A third state module is used to determine the corresponding third state parameter as 1 when a short circuit occurs in the low-voltage electrical equipment, and to determine the corresponding third state parameter as 0 when no short circuit occurs in the low-voltage electrical equipment;

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

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

[0135] Specifically, the fourth state parameter can reflect the temperature state of the device and prevent device damage or safety accidents caused by overheating.

[0136] As a possible implementation manner, the third control unit includes: a state scoring module, a first determining module, a second determining module and a third determining module.

[0137] A 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, wherein 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, D4 is the fourth state parameter;

[0138] A first determination module is used to determine that the low-voltage electrical equipment is in a normal operating state when the state score is less than or equal to a third threshold;

[0139] Specifically, when the equipment status is normal, the system can output "normal operation" information and stop alarming to reduce unnecessary maintenance intervention.

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

[0141] Specifically, in a potential risk state, the equipment may have some problems, but has not yet endangered safety. The alarm information can notify maintenance personnel to strengthen equipment monitoring and perform preventive maintenance.

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

[0143] Specifically, in an emergency fault state, quick measures must be taken to avoid equipment damage or safety accidents. The alarm information can trigger the automatic protection mechanism, start the emergency shutdown procedure of the equipment, and notify the relevant maintenance personnel to handle it in time.

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

[0145] The first instruction unit is used for not generating corresponding control instructions when the low-voltage electrical equipment is in a normal operating state;

[0146] Specifically, when the device is operating normally, the system does not perform any intervention, avoiding unnecessary resource consumption and operational troubles.

[0147] The second instruction unit is used to generate an alarm instruction when the low-voltage electrical equipment is in a potential risk state;

[0148] Specifically, by generating an alarm instruction, operation and maintenance personnel can be notified of potential risks to the equipment so that close monitoring and preventive maintenance can be carried out.

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

[0150] Specifically, in the case of an emergency fault, an alarm instruction is generated to immediately notify relevant personnel for emergency processing. At the same time, an isolation instruction is generated to ensure that the equipment does not operate further to prevent the fault from expanding and safety accidents from occurring. The execution of the isolation instruction may include disconnecting the power supply, stopping the equipment operation, or other necessary emergency measures.

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

[0152] The processor includes a kernel, which calls the corresponding program unit from the memory. One or more kernels can be set, and the communication efficiency can be improved by adjusting the kernel parameters.

[0153] The memory may include non-permanent memory in a computer-readable medium, 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] An embodiment of the present invention provides a computer-readable storage medium, which includes a stored program, wherein when the program is running, the device where the computer-readable storage medium is located is controlled to execute the safety protection method for the low-voltage electrical equipment.

[0155] An embodiment of the present invention provides a low-voltage electrical equipment safety protection system, comprising: one or more processors, a memory, and one or more programs, wherein the one or more programs are stored in the memory and are configured to be executed by the one or more processors, and the one or more programs include methods for executing the above-mentioned low-voltage electrical equipment safety protection method.

[0156] Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general computing device, they can be concentrated on a single computing device, or distributed on a network composed of multiple computing devices, they can be implemented by a program code executable by a computing device, so that they can be stored in a storage device and executed by the computing device, and in some cases, the steps shown or described can be executed in a different order than here, or they can be made into individual integrated circuit modules, or multiple modules or steps therein can be made into a single integrated circuit module for implementation. Thus, the present invention is not limited to any specific combination of hardware and software.

[0157] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented in one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) that include computer-usable program code.

[0158] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0159] These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0160] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operating steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for implementing the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions 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] The memory may include non-permanent memory in a computer-readable medium, random access memory (RAM) and / or non-volatile memory in the form of read-only memory (ROM) or flash RAM. The memory is an example of a computer-readable medium.

[0163] Computer readable media include permanent and non-permanent, removable and non-removable media that can be implemented by any method or technology to store information. Information can be computer readable instructions, data structures, program modules 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 technology, compact disk read-only memory (CD-ROM), digital versatile disk (DVD) or other optical storage, magnetic cassettes, magnetic disk storage or other magnetic storage devices or any other non-transmission media that can be used to store information that can be accessed by a computing device. As defined herein, computer readable media does not include temporary computer readable media (transitory media), such as modulated data signals and carrier waves.

[0164] It should also be noted that the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, commodity or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, commodity or device. In the absence of more restrictions, the elements defined by the sentence "comprises a ..." do not exclude the existence of other identical elements in the process, method, commodity or device including the elements.

[0165] From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:

[0166] 1) The safety protection method for low-voltage electrical equipment of the present application, the present application uses the control module to detect and analyze data including overload, short circuit, leakage and temperature and judge the status, and controls the safety protection module to execute alarm or cut off the power supply based on the control module instruction, thereby realizing real-time monitoring and automatic fault detection of low-voltage electrical equipment, and 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 time and take protective measures, effectively reducing the risk of safety accidents caused by equipment failures. At the same time, the system has good adaptability and can be reasonably configured and debugged according to low-voltage electrical equipment of different types and operating environments, further increasing the adaptability of the scene. It solves the problem that low-voltage electrical equipment in the prior art has safety hazards such as overload, short circuit, leakage, overheating, etc., 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 the present application includes: a first control unit, a second control unit and a third control unit. The present 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, issue alarm reminders in time and take protective measures, effectively reducing the risk of safety accidents caused by equipment failures. It solves the problem that low-voltage electrical equipment in the prior art has safety hazards such as overload, short circuit, leakage, overheating, etc., and traditional safety protection measures cannot achieve real-time monitoring and rapid response.

[0168] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present 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. The modules are communicatively connected, and the detection module is electrically connected to the low-voltage electrical equipment. The method includes: Controlling the detection module to obtain operating parameters of the low-voltage electrical equipment, wherein the operating parameters include supply voltage, load resistance, ground current and operating temperature; Control the analysis control module to calculate the overload current, leakage current, and short-circuit current respectively based on the operating parameters, perform operating status diagnosis based on the overload current, leakage current, short-circuit current, and operating temperature respectively, and generate a diagnosis report, wherein the diagnosis report at least includes whether the low-voltage electrical equipment is operating normally; The safety protection module is controlled to receive the diagnostic report and perform troubleshooting through a troubleshooting algorithm, and a corresponding control instruction is generated according to the fault type determined after troubleshooting, and the low-voltage electrical equipment is regulated based on the control instruction.

2. The method according to claim 1, characterized in that Controlling the detection module to obtain 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, and substitute the first resistance value and the second resistance value into a first preset formula The operating temperature is obtained, where R sensor is the first resistance, R0 is the second resistance, T current is the operating temperature.

3. The method according to claim 2, characterized in that Controlling the analysis control module to calculate the overload current, leakage current, and short-circuit current respectively based on the operating parameters includes: Substitute the supply voltage and the load resistance into the second preset formula The overload current is obtained, where V supply is the supply voltage, I load is the overload current, R load is the load resistance; Substitute the A phase current, the B phase current, the C phase current and the ground current into the third preset formula I leak =I phase1 +I phase2 +I phase3 -I ground , and obtain the leakage current, where I leak is the leakage current, I phase1 is the A phase current, I phase2 is the B phase current, I phase3 is the C phase current, I ground is the ground current; Obtain the first equivalent resistance of the low-voltage electrical equipment in the short-circuit state, and substitute the first equivalent resistance and the supply voltage into a fourth preset formula The short-circuit current is obtained, where I short is the short-circuit current, Z eq is the first equivalent resistance.

4. The method according to claim 1, characterized in that: Based on the overload current, the leakage current, the short-circuit current and the operating temperature, respectively, operating status diagnosis is performed 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 an overload safety factor, and determine that the low-voltage electrical equipment does not have an overload phenomenon when the overload safety factor is greater than a second threshold value, and determine that the low-voltage electrical equipment has an overload phenomenon when the overload safety factor is less than or equal to the second threshold value; Calculate the ratio of the second preset current to the leakage current to obtain a leakage safety factor, and determine that the low-voltage electrical equipment does not have leakage when the leakage safety factor is less than the second threshold value, and determine that the low-voltage electrical equipment has leakage when the leakage safety factor is greater than or equal to the second threshold value; Calculate the ratio of the third preset current to the short-circuit current to obtain a short-circuit safety factor, and determine that the low-voltage electrical equipment does not have a short-circuit phenomenon when the short-circuit safety factor is less than the second threshold value, and determine that the low-voltage electrical equipment has the short-circuit phenomenon when the short-circuit safety factor is greater than or equal to the second threshold value; Calculate the ratio of the preset temperature threshold to the operating temperature to obtain an overheating safety factor. When the overheating safety factor is less than the second threshold, determine that the low-voltage electrical equipment does not have overheating. When the overheating safety factor is greater than or equal to the second threshold, determine that the low-voltage electrical equipment has overheating.

5. The method according to claim 4, characterized in that Generates a diagnostic report including: When the low-voltage electrical equipment has the overload phenomenon, the corresponding first state parameter is determined to be 1; when the low-voltage electrical equipment does not have the overload phenomenon, the corresponding first state parameter is determined to be 0; When the low-voltage electrical equipment has the 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 the short circuit phenomenon exists in the low-voltage electrical equipment, the corresponding third state parameter is determined to be 1; when the short circuit phenomenon does not exist in the low-voltage electrical equipment, the corresponding third state parameter is determined to be 0; When the overheating phenomenon occurs in the low-voltage electrical equipment, the corresponding fourth state parameter is determined to be 1; when the overheating phenomenon does not occur in the low-voltage electrical equipment, the corresponding fourth state parameter is determined to be 0.

6. The method according to claim 5, characterized in that Controlling the security protection module to receive the diagnostic report and perform troubleshooting through a troubleshooting algorithm includes: 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 a state score, wherein 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; When the status score is less than or equal to a third threshold, determining that the low-voltage electrical equipment is in a normal operating state; When the status score is greater than the third threshold and less than the fourth threshold, determining that the low-voltage electrical equipment is in a potential risk state, and generating a first alarm message; When the status score is greater than or equal to the fourth threshold, it is determined that the low-voltage electrical equipment is in an emergency fault state, and a second alarm message is generated.

7. The method according to claim 6, characterized in that Generate corresponding control instructions based on the fault type determined after troubleshooting, including: When the low-voltage electrical equipment is in the normal operating state, no corresponding control instruction is generated; When the low-voltage electrical equipment is in the potential risk state, generating an alarm instruction; When the low-voltage electrical equipment is in the emergency fault state, the alarm instruction and the isolation instruction are generated.

8. 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. The modules are connected in communication, the detection module is electrically connected to the low-voltage electrical equipment, and the device includes: A first control unit, used for controlling the detection module to obtain operating parameters of the low-voltage electrical equipment, wherein the operating parameters include supply voltage, load resistance, ground current and operating temperature; a second control unit, configured to control the analysis control module to respectively calculate the overload current, the leakage current, and the short-circuit current based on the operating parameters, respectively perform operating status diagnosis based on the overload current, the leakage current, the short-circuit current, and the operating temperature, and generate a diagnosis report, wherein the diagnosis report at least includes 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 and perform troubleshooting through a troubleshooting algorithm, and generate corresponding control instructions according to the fault type determined after troubleshooting, and regulate the low-voltage electrical equipment based on the control instructions.

9. A computer-readable storage medium, characterized in that: The computer-readable storage medium includes a stored program, wherein when the program is executed, the device where the computer-readable storage medium is located is controlled to execute the method according to any one of claims 1 to 7.

10. A low voltage electrical equipment safety protection system, 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 are configured to be executed by the one or more processors, and the one or more programs include methods for executing any one of claims 1 to 7.

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