A method, apparatus and system for detecting a fault arc

Abstract

The application discloses a kind of detection methods, device, fault arc detection system of fault arc, storage medium and computer program product, adopt a pair of relative motion arc generating electrode to carry out fault arc detection, this method includes: drive two arc generating electrode relative motion to generate fault arc;Collect the light energy, heat energy and corresponding electric parameters generated by fault arc;According to light energy, heat energy and electric parameter, carry out grading determination to fault arc.The scheme, makes full use of arc light heat characteristic data, improves the utilization rate of characteristic data and the overall energy utilization value of system.

Description

Technical Field

[0001] This invention belongs to the field of electrical safety detection technology, specifically relating to a method, device, system, storage medium, and computer program product for detecting fault arcs. Background Technology

[0002] Arc fault testing is a crucial step in the research and certification process of electrical safety protection products, and its results directly determine the performance indicators of products such as arc protectors. During arc fault testing, a carbon rod and a striker break down the air under voltage to form an arc. The arc releases a large amount of light and heat energy at the moment of its occurrence, which are important components of arc energy.

[0003] In typical arc fault testing, only the electrical signals generated by the arc are used for data acquisition and analysis, without any recovery or utilization of the accompanying light and heat energy. The light and heat energy generated by the arc is directly dissipated into the surrounding environment, making secondary utilization impossible. This problem of continuous energy loss is further amplified, especially in large-scale continuous arc testing scenarios requiring thousands of different voltage and current combinations: on the one hand, significant energy loss keeps the energy utilization efficiency of the entire testing system at a consistently low level, significantly increasing energy consumption and operating costs; on the other hand, this unutilized energy is not included in the arc characteristic analysis, resulting in a waste of arc information.

[0004] The above content is only used to help understand the technical solution of the present invention and does not represent an admission that the above content is prior art. Summary of the Invention

[0005] The purpose of this invention is to provide a method, apparatus, system, storage medium, and computer program product for detecting faulty arcs, in order to solve the problems in related solutions where faulty arc testing cannot recover and utilize the light and heat energy generated by the arc, resulting in energy and feature data waste, low overall system energy utilization rate, and high operating energy consumption. This invention aims to fully utilize the light and heat feature data of the arc, thereby improving the feature data utilization rate and the overall energy utilization value of the system.

[0006] This invention provides a method for detecting fault arcs, which uses a pair of relatively movable arc generating electrodes to detect fault arcs. The detection method includes: driving the two arc generating electrodes to move relative to each other to generate a fault arc; collecting the light energy, heat energy, and corresponding electrical parameters generated by the fault arc; and classifying the fault arc according to the light energy, the heat energy, and the electrical parameters.

[0007] In some implementations, classifying the fault arc includes: calculating a characteristic ratio value based on the value of light energy, the value of heat energy, and the electrical parameters; comparing the characteristic ratio value with a preset threshold; if the characteristic ratio value is greater than the preset threshold, then determining that the current fault arc is a harmful arc; if the characteristic ratio value is less than or equal to the preset threshold, then determining that the current fault arc is a harmless arc.

[0008] In some embodiments, the electrical parameters include rated current, rated voltage, arcing current, and arcing voltage; the formula for calculating the characteristic ratio H is:

[0009] ;

[0010] Where R is the value of the thermal energy, Q is the value of the light energy, I is the value of the rated current, and U is the value of the rated voltage. The arcing current value is... The arcing voltage value is given.

[0011] In some embodiments, the method further includes converting the collected light energy and thermal energy into electrical energy and storing it.

[0012] In some embodiments, the method further includes: when the main power supply circuit is de-energized, using stored electrical energy to power the detection device.

[0013] In some embodiments, the method further includes: using stored electrical energy to drive the two arc-generating electrodes to move.

[0014] In conjunction with the above method, another aspect of the present invention provides a fault arc detection device, which uses a pair of relatively movable arc generating electrodes to detect fault arcs. The detection device includes: an arc generating unit configured to drive the two arc generating electrodes to move relative to each other to generate a fault arc; a data acquisition unit configured to acquire the light energy, heat energy, and corresponding electrical parameters generated by the fault arc; and an arc determination unit configured to classify and determine the fault arc according to the light energy, the heat energy, and the electrical parameters.

[0015] In some embodiments, the arc determination unit classifies the fault arc by: calculating a characteristic ratio value based on the value of light energy, the value of heat energy, and the electrical parameters; comparing the characteristic ratio value with a preset threshold; if the characteristic ratio value is greater than the preset threshold, then the current fault arc is determined to be a harmful arc; if the characteristic ratio value is less than or equal to the preset threshold, then the current fault arc is determined to be a harmless arc.

[0016] In some embodiments, the electrical parameters include rated current, rated voltage, arcing current, and arcing voltage; the formula for calculating the characteristic ratio H is:

[0017] ;

[0018] Where R is the value of the thermal energy, Q is the value of the light energy, I is the value of the rated current, and U is the value of the rated voltage. The arcing current value is... The arcing voltage value is given.

[0019] In some embodiments, the detection device further includes an energy storage unit configured to convert the collected light energy and heat energy into electrical energy and store it.

[0020] In some implementations, the energy storage unit is also configured to use stored electrical energy to power the detection equipment when the main power supply circuit is interrupted.

[0021] In some embodiments, the energy storage unit is also configured to use the stored electrical energy to drive the two arc-generating electrodes to move.

[0022] In conjunction with the above-described device, the present invention further provides a fault arc detection system, comprising: the fault arc detection device described above.

[0023] In conjunction with the above method, the present invention further provides a storage medium comprising a stored program, wherein, when the program is executed, the device on which the storage medium is located executes the above-described method for detecting fault arcs.

[0024] In conjunction with the above method, the present invention further provides a computer program product comprising a computer program that, when processed and executed, implements the steps of the above-described method for detecting fault arcs.

[0025] The present invention uses the light energy, heat energy and electrical parameters of the electric arc to complete the classification and determination of faulty electric arcs, and mines various characteristic information of the electric arc, which effectively improves the utilization rate of characteristic data and provides comprehensive support for electric arc determination.

[0026] Other features and advantages of the invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention.

[0027] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0028] Figure 1 This is a schematic flowchart of an embodiment of the fault arc detection method of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of an embodiment of the fault arc detection device of the present invention;

[0030] Figure 3 This is a schematic diagram of an arc generator;

[0031] Figure 4 This is a flowchart illustrating another embodiment of the method for detecting fault arcs.

[0032] Referring to the accompanying drawings, the reference numerals in the embodiments of the present invention are as follows:

[0033] 1-Carbon rod; 2-Striking pin; 3-Wire; 101-Arc generating unit; 102-Data acquisition unit; 103-Arc determination unit. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this invention, and not all of them. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0035] During arc fault testing, the generation of an arc is accompanied by a significant loss of photothermal energy, resulting in severe energy waste. Furthermore, the large current generated by the arc can easily trigger power supply circuit tripping, leading to automated testing interruptions and data loss. Simultaneously, existing testing equipment cannot automatically determine the arc level and severity by combining arc electrical parameters with photothermal characteristics, relying entirely on manual operation and labeling, resulting in low testing efficiency and poor data consistency. The current automated arc fault testing system fails to simultaneously meet the comprehensive needs of efficient energy recovery and utilization, continuous testing operation, and intelligent arc grading, becoming a core problem restricting the efficient implementation of arc fault detection experiments.

[0036] Therefore, this invention provides a method for detecting fault arcs. By collecting the light energy, heat energy, and electrical parameters generated by the arc and calculating characteristic ratio values ​​for classification, the light energy and heat energy are converted into electrical energy for storage and as backup power. This solves the problems of wasted light and heat energy, power outages leading to test interruptions, data loss, inability to automatically determine the arc level, and reliance on manual operation in traditional tests. It achieves the integrated effect of energy recovery and utilization, continuous test operation, and intelligent arc classification, effectively improving the efficiency and data reliability of fault arc detection tests.

[0037] According to an embodiment of the present invention, a method for detecting fault arcs is provided, which uses a pair of relatively movable arc-generating electrodes for fault arc detection. For example... Figure 1 The flowchart of an embodiment of the method of the present invention is shown. The method for detecting fault arcs may include steps S110 to S130.

[0038] In step S110, the two arc generating electrodes are driven to move relative to each other to generate a fault arc.

[0039] Driven by a power unit, two arc-generating electrodes gradually approach each other from an initial distance. When the electric field strength between the electrodes reaches the air breakdown voltage, the air between the electrodes is ionized, forming a conductive path and generating a fault arc. If the electrodes remain close to each other or at a critical distance, the arc will continue to discharge; if the electrode distance increases beyond the critical value, the arc will extinguish itself. Specifically... Figure 3 As shown, carbon rod 1 and striker 2 are a pair of arc-generating electrodes that can move relative to each other. They are connected to the electrical circuit via wire 3. When carbon rod 1 and striker 2 approach each other to a certain distance under the drive of the power device, the air between the two electrodes is broken down, thereby generating a fault arc.

[0040] In step S120, the light energy, heat energy, and corresponding electrical parameters generated by the fault arc are collected.

[0041] The light energy generated by a fault arc refers to the visible and invisible light energy radiated outward during the arc discharge process, and its intensity is directly related to the arc power and discharge state. The heat energy generated by a fault arc refers to the heat released during the arc discharge process, which raises the temperature of the electrodes and surrounding medium; its magnitude is related to the arc energy and duration. Electrical parameters refer to electrical data related to the fault arc, such as current and voltage, including the circuit's rated current and voltage, as well as the arcing current and voltage during arc discharge. Light energy is converted into quantifiable values ​​through photoelectric acquisition devices, and heat energy is converted into corresponding values ​​through temperature or thermal radiation acquisition devices. Electrical parameters are acquired in real time by current and voltage sensors in the circuit.

[0042] In step S130, the fault arc is classified and determined according to the light energy, the heat energy, and the electrical parameters.

[0043] The collected light and heat energy values ​​are comprehensively analyzed with electrical parameter data. Through a preset judgment logic, fault arcs of different intensities and degrees of danger are classified into different levels. During the judgment process, light and heat energy data can supplement the arc energy distribution information that electrical parameters cannot reflect alone, avoiding misjudgments that may occur when judging based on a single electrical parameter, and making the classification results more consistent with the actual degree of danger of the arc.

[0044] In some implementations, step S130 involves classifying the fault arc, including: calculating a characteristic ratio value based on the value of the light energy, the value of the heat energy, and the electrical parameters; comparing the characteristic ratio value with a preset threshold; if the characteristic ratio value is greater than the preset threshold, then the current fault arc is determined to be a harmful arc; if the characteristic ratio value is less than or equal to the preset threshold, then the current fault arc is determined to be a harmless arc.

[0045] Specifically, firstly, based on the collected light energy, heat energy, and electrical parameters, a characteristic ratio value is obtained through a preset calculation method. This characteristic ratio value is used to characterize the degree of hazard of the fault arc. Then, the obtained characteristic ratio value is compared with a preset threshold: if the characteristic ratio value is greater than the preset threshold, it indicates that the arc's energy level is high and poses a significant potential hazard to the electrical circuit, thus being classified as a harmful arc; if the characteristic ratio value is less than or equal to the preset threshold, it indicates that the arc's energy level is low and within a safe and controllable range, thus being classified as a harmless arc. A harmful arc refers to a fault arc whose intensity, duration, or energy level exceeds safety standards and may damage electrical equipment or lines or cause a fire. A harmless arc refers to a fault arc whose intensity, duration, or energy level is within a safe range and will not cause significant harm to electrical equipment or lines. By calculating the characteristic ratio value and comparing it with a preset threshold, a quantitative classification of fault arcs is achieved, effectively improving the accuracy and objectivity of arc type differentiation.

[0046] In some implementations, the electrical parameters include rated current, rated voltage, arcing current, and arcing voltage. Rated voltage and rated current refer to the voltage and current values ​​of the electrical circuit under normal operating conditions, representing the standard values ​​permissible during long-term operation. Arcing voltage and arcing current refer to the actual voltage across the electrodes and the actual current flowing through the circuit during a fault arc.

[0047] The formula for calculating the characteristic ratio H is:

[0048] ;

[0049] Where R is the value of the thermal energy, Q is the value of the light energy, I is the value of the rated current, and U is the value of the rated voltage. The arcing current value is... The arc voltage value is mentioned above. Traditional arc detection often relies on a single electrical parameter (such as sudden current changes or voltage fluctuations), which is easily affected by factors such as load changes and harmonic interference, leading to misjudgments. However, by introducing the characteristics of two non-electrical dimensions, light energy and heat energy, it can more comprehensively reflect the actual energy level and degree of harm of the arc.

[0050] This invention achieves multi-dimensional and accurate classification of fault arcs by collecting and combining the light energy, heat energy, and electrical parameters of the fault arc. This not only overcomes the limitations of judging by a single electrical parameter, but also provides a more comprehensive and reliable basis for the research and development and testing of subsequent electrical protection devices.

[0051] In some embodiments, the method further includes converting the collected light energy and thermal energy into electrical energy and storing it.

[0052] During the generation and maintenance of a fault arc discharge, light and heat energy are continuously released. Light energy can be converted into an electrical signal by a photoelectric conversion device, and then further processed by a circuit to become electrical energy. Heat energy can be converted into electrical energy by a thermoelectric conversion device, converting the heat generated by the arc into a thermoelectric potential, which is then converted into electrical energy. The converted electrical energy is then transferred to an energy storage component for later use. Throughout the process, the conversion efficiency of light and heat energy varies depending on the intensity and duration of the arc and the performance of the conversion device. The stored electrical energy also gradually accumulates during the conversion process, achieving the recovery and utilization of arc energy and avoiding energy waste.

[0053] In some embodiments, the method further includes: when the main power supply circuit is de-energized, using stored electrical energy to power the detection device.

[0054] The main power supply circuit provides power to the detection equipment, which refers to the equipment used to perform arc fault detection operations, including electrode drive devices, data acquisition devices, and control and processing devices. During arc fault detection, if the main power supply circuit is interrupted due to external power outages, line faults, or other reasons, the detection equipment will lose its primary power source and will be unable to continue electrode drive, data acquisition, arc detection, and other operations. At this time, stored electrical energy will be utilized to provide backup power to the detection equipment. The electrical energy in the energy storage components is transmitted to each power-consuming unit of the detection equipment through the power supply lines, maintaining the basic operation of the equipment and enabling the detection work to continue. This avoids sudden termination of the detection process due to main power interruption, improves the stability and reliability of the detection process, and prevents data interruption or loss due to external power failures.

[0055] In some embodiments, the method further includes: using stored electrical energy to drive the two arc-generating electrodes to move.

[0056] During arc fault detection, two arc-generating electrodes need to move relative to each other under the drive of a power unit to achieve a cyclical process of moving closer to generate an arc and moving further away to extinguish it. When the main power supply circuit is de-energized or operating under low load, stored electrical energy can be used to power the drive unit, driving the two arc-generating electrodes to complete the actions of moving closer and further away. The stored electrical energy is transmitted to the power unit through the drive circuit, and the power unit converts the electrical energy into mechanical energy, propelling the electrodes to move at a preset speed and trajectory. This eliminates the need for external main power supply, enabling independent control of the electrode movement and allowing the electrode movement process to be disconnected from the external main power supply circuit. This enhances the independence and flexibility of the detection equipment and further improves the utilization efficiency of arc fault energy.

[0057] Figure 4 This is a flowchart illustrating another embodiment of a method for detecting fault arcs, which includes steps 1 to 4.

[0058] Step 1: The power supply provides power to the entire system, the detection process is started, the carbon rod is driven to move towards the impact pin, and the electrode spacing is changed to attempt to generate an electric arc.

[0059] Step 2: The system detects in real time whether a fault arc is formed between the carbon rod and the striker; if no arc is formed, the carbon rod continues to move forward until the arc is successfully formed.

[0060] Step 3: After successful arc breaking, mark the thermal energy value R and the light energy value Q, and perform thermal and light energy recovery respectively, converting the energy into electrical energy and storing it in the backup power storage device. Then, determine if there is a power outage. If there is a power outage, call the stored electrical energy to maintain detection; otherwise, continue testing. Arc breaking data is retained, marking the arc current I2 and voltage U2, as well as the rated current I and voltage U. The data is sent to the intelligent control processor. For this instance, R and Q are compared with IU and I2U2, and a ratio value H is output. It is determined whether H is greater than the threshold F. If it is, it is considered a harmful arc breaking, and the ratio value at this time is marked as H1, H2, H3…; if it is not greater, it is considered a harmless arc breaking, and the ratio value at this time is marked as W1, W2, W3…

[0061] Step 4: All data is aggregated to the intelligent control processor. The system automatically and cyclically executes the entire process of carbon rod advancement, arc detection, data acquisition and judgment according to the program, realizing automatic testing.

[0062] The technical solution of this embodiment completes the fault arc classification judgment based on the light energy, heat energy and electrical parameters of the arc, and mines various feature information of the arc, which effectively improves the utilization rate of feature data and provides comprehensive support for arc judgment.

[0063] According to embodiments of the present invention, a fault arc detection device corresponding to a fault arc detection method is also provided, employing a pair of relatively movable arc-generating electrodes for fault arc detection. See also Figure 2 The schematic diagram of an embodiment of the device of the present invention shown herein may include: an arc generating unit 101, a data acquisition unit 102, and an arc determination unit 103.

[0064] Arc generating unit 101 is configured to drive the two arc generating electrodes to move relative to each other to generate a fault arc.

[0065] Driven by a power unit, two arc-generating electrodes gradually approach each other from an initial distance. When the electric field strength between the electrodes reaches the air breakdown voltage, the air between the electrodes is ionized, forming a conductive path and generating a fault arc. If the electrodes remain close to each other or at a critical distance, the arc will continue to discharge; if the electrode distance increases beyond the critical value, the arc will extinguish itself. Specifically... Figure 3 As shown, carbon rod 1 and striker 2 are a pair of arc-generating electrodes that can move relative to each other. They are connected to the electrical circuit via wire 3. When carbon rod 1 and striker 2 approach each other to a certain distance under the drive of the power device, the air between the two electrodes is broken down, thereby generating a fault arc.

[0066] The data acquisition unit 102 is configured to acquire the light energy, heat energy and corresponding electrical parameters generated by the fault arc.

[0067] The light energy generated by a fault arc refers to the visible and invisible light energy radiated outward during the arc discharge process, and its intensity is directly related to the arc power and discharge state. The heat energy generated by a fault arc refers to the heat released during the arc discharge process, which raises the temperature of the electrodes and surrounding medium; its magnitude is related to the arc energy and duration. Electrical parameters refer to electrical data related to the fault arc, such as current and voltage, including the circuit's rated current and voltage, as well as the arcing current and voltage during arc discharge. Light energy is converted into quantifiable values ​​through photoelectric acquisition devices, and heat energy is converted into corresponding values ​​through temperature or thermal radiation acquisition devices. Electrical parameters are acquired in real time by current and voltage sensors in the circuit.

[0068] The arc determination unit 103 is configured to classify the fault arc according to the light energy, the heat energy and the electrical parameters.

[0069] The collected light and heat energy values ​​are comprehensively analyzed with electrical parameter data. Through a preset judgment logic, fault arcs of different intensities and degrees of danger are classified into different levels. During the judgment process, light and heat energy data can supplement the arc energy distribution information that electrical parameters cannot reflect alone, avoiding misjudgments that may occur when judging based on a single electrical parameter, and making the classification results more consistent with the actual degree of danger of the arc.

[0070] In some embodiments, the arc determination unit 103 classifies the fault arc by: calculating a characteristic ratio value based on the value of light energy, the value of heat energy, and the electrical parameters; comparing the characteristic ratio value with a preset threshold; if the characteristic ratio value is greater than the preset threshold, the current fault arc is determined to be a harmful arc; if the characteristic ratio value is less than or equal to the preset threshold, the current fault arc is determined to be a harmless arc.

[0071] Specifically, firstly, based on the collected light energy, heat energy, and electrical parameters, a characteristic ratio value is obtained through a preset calculation method. This characteristic ratio value is used to characterize the degree of hazard of the fault arc. Then, the obtained characteristic ratio value is compared with a preset threshold: if the characteristic ratio value is greater than the preset threshold, it indicates that the arc's energy level is high and poses a significant potential hazard to the electrical circuit, thus being classified as a harmful arc; if the characteristic ratio value is less than or equal to the preset threshold, it indicates that the arc's energy level is low and within a safe and controllable range, thus being classified as a harmless arc. A harmful arc refers to a fault arc whose intensity, duration, or energy level exceeds safety standards and may damage electrical equipment or lines or cause a fire. A harmless arc refers to a fault arc whose intensity, duration, or energy level is within a safe range and will not cause significant harm to electrical equipment or lines. By calculating the characteristic ratio value and comparing it with a preset threshold, a quantitative classification of fault arcs is achieved, effectively improving the accuracy and objectivity of arc type differentiation.

[0072] In some implementations, the electrical parameters include rated current, rated voltage, arcing current, and arcing voltage. Rated voltage and rated current refer to the voltage and current values ​​of the electrical circuit under normal operating conditions, representing the standard values ​​permissible during long-term operation. Arcing voltage and arcing current refer to the actual voltage across the electrodes and the actual current flowing through the circuit during a fault arc.

[0073] The formula for calculating the characteristic ratio H is:

[0074] ;

[0075] Where R is the value of the thermal energy, Q is the value of the light energy, I is the value of the rated current, and U is the value of the rated voltage. The arcing current value is... The arc voltage value is mentioned above. Traditional arc detection often relies on a single electrical parameter (such as sudden current changes or voltage fluctuations), which is easily affected by factors such as load changes and harmonic interference, leading to misjudgments. However, by introducing the characteristics of two non-electrical dimensions, light energy and heat energy, it can more comprehensively reflect the actual energy level and degree of harm of the arc.

[0076] This invention achieves multi-dimensional and accurate classification of fault arcs by collecting and combining the light energy, heat energy, and electrical parameters of the fault arc. This not only overcomes the limitations of judging by a single electrical parameter, but also provides a more comprehensive and reliable basis for the research and development and testing of subsequent electrical protection devices.

[0077] In some embodiments, the detection device further includes an energy storage unit configured to convert the collected light energy and heat energy into electrical energy and store it.

[0078] During the generation and maintenance of a fault arc discharge, light and heat energy are continuously released. Light energy can be converted into an electrical signal by a photoelectric conversion device, and then further processed by a circuit to become electrical energy. Heat energy can be converted into electrical energy by a thermoelectric conversion device, converting the heat generated by the arc into a thermoelectric potential, which is then converted into electrical energy. The converted electrical energy is then transferred to an energy storage component for later use. Throughout the process, the conversion efficiency of light and heat energy varies depending on the intensity and duration of the arc and the performance of the conversion device. The stored electrical energy also gradually accumulates during the conversion process, achieving the recovery and utilization of arc energy and avoiding energy waste.

[0079] In some implementations, the energy storage unit is also configured to use stored electrical energy to power the detection equipment when the main power supply circuit is interrupted.

[0080] The main power supply circuit provides power to the detection equipment, which refers to the equipment used to perform arc fault detection operations, including electrode drive devices, data acquisition devices, and control and processing devices. During arc fault detection, if the main power supply circuit is interrupted due to external power outages, line faults, or other reasons, the detection equipment will lose its primary power source and will be unable to continue electrode drive, data acquisition, arc detection, and other operations. At this time, stored electrical energy will be utilized to provide backup power to the detection equipment. The electrical energy in the energy storage components is transmitted to each power-consuming unit of the detection equipment through the power supply lines, maintaining the basic operation of the equipment and enabling the detection work to continue. This avoids sudden termination of the detection process due to main power interruption, improves the stability and reliability of the detection process, and prevents data interruption or loss due to external power failures.

[0081] In some embodiments, the energy storage unit is also configured to use the stored electrical energy to drive the two arc-generating electrodes to move.

[0082] During arc fault detection, two arc-generating electrodes need to move relative to each other under the drive of a power unit to achieve a cyclical process of moving closer to generate an arc and moving further away to extinguish it. When the main power supply circuit is de-energized or operating under low load, stored electrical energy can be used to power the drive unit, driving the two arc-generating electrodes to complete the actions of moving closer and further away. The stored electrical energy is transmitted to the power unit through the drive circuit, and the power unit converts the electrical energy into mechanical energy, propelling the electrodes to move at a preset speed and trajectory. This eliminates the need for external main power supply, enabling independent control of the electrode movement and allowing the electrode movement process to be disconnected from the external main power supply circuit. This enhances the independence and flexibility of the detection equipment and further improves the utilization efficiency of arc fault energy.

[0083] Figure 4 This is a flowchart illustrating another embodiment of a method for detecting fault arcs, which includes steps 1 to 4.

[0084] Step 1: The power supply provides power to the entire system, the detection process is started, the carbon rod is driven to move towards the impact pin, and the electrode spacing is changed to attempt to generate an electric arc.

[0085] Step 2: The system detects in real time whether a fault arc is formed between the carbon rod and the striker; if no arc is formed, the carbon rod continues to move forward until the arc is successfully formed.

[0086] Step 3: After successful arc breaking, mark the thermal energy value R and the light energy value Q, and perform thermal and light energy recovery respectively, converting the energy into electrical energy and storing it in the backup power storage device. Then, determine if there is a power outage. If there is a power outage, the stored electrical energy is used to maintain detection; otherwise, the test continues. Arc breaking data is retained, marking the arc breaking current I2 and voltage U2, as well as the rated current I and voltage U. The data is sent to the intelligent control processor. For this instance, R and Q are compared with IU and I2U2, and a ratio value H is output. It is determined whether H is greater than the threshold F. If it is, it is considered a harmful arc breaking, and the ratio value at this time is marked as H1, H2, H3…; if it is not greater, it is considered a harmless arc breaking, and the ratio value at this time is marked as W1, W2, W3…

[0087] Step 4: All data is aggregated to the intelligent control processor. The system automatically and cyclically executes the entire process of carbon rod advancement, arc detection, data acquisition and judgment according to the program, realizing automatic testing.

[0088] Since the processing and functions implemented by the device in this embodiment are basically the same as the embodiments, principles and examples of the aforementioned methods, any details not covered in the description of this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0089] The technical solution of this invention completes the classification and determination of fault arcs based on the light energy, heat energy and electrical parameters of the arc, and mines various characteristic information of the arc, which effectively improves the utilization rate of characteristic data and provides comprehensive support for arc determination.

[0090] According to embodiments of the present invention, a fault arc detection system corresponding to a fault arc detection device is also provided. This fault arc detection system may include the fault arc detection device described above.

[0091] Since the processing and functions implemented by the fault arc detection system in this embodiment are basically the same as those of the aforementioned device embodiments, principles and examples, any details not covered in this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0092] The technical solution of this invention completes the classification and determination of fault arcs based on the light energy, heat energy and electrical parameters of the arc, and mines various characteristic information of the arc, which effectively improves the utilization rate of characteristic data and provides comprehensive support for arc determination.

[0093] According to an embodiment of the present invention, a storage medium corresponding to a fault arc detection method is also provided, the storage medium including a stored program, wherein the program controls the device where the storage medium is located to execute the fault arc detection method described above when it is running.

[0094] Since the processing and functions implemented by the storage medium in this embodiment are basically the same as the embodiments, principles and examples of the aforementioned methods, any details not covered in the description of this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0095] The technical solution of this invention completes the classification and determination of fault arcs based on the light energy, heat energy and electrical parameters of the arc, and mines various characteristic information of the arc, which effectively improves the utilization rate of characteristic data and provides comprehensive support for arc determination.

[0096] According to an embodiment of the present invention, a computer program product corresponding to a fault arc detection method is also provided. The computer program product includes a computer program that, when processed and executed, implements the steps of the above-described fault arc detection method.

[0097] Since the processing and functions implemented by the computer program product in this embodiment are basically corresponding to the embodiments, principles and examples of the aforementioned methods, any details not covered in the description of this embodiment can be found in the relevant descriptions in the aforementioned embodiments, and will not be repeated here.

[0098] The technical solution of this invention completes the classification and determination of fault arcs based on the light energy, heat energy and electrical parameters of the arc, and mines various characteristic information of the arc, which effectively improves the utilization rate of characteristic data and provides comprehensive support for arc determination.

[0099] In summary, it is readily understood by those skilled in the art that, without conflict, the aforementioned advantageous methods can be freely combined and superimposed.

[0100] The above description is merely an embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of the claims of the present invention.

Claims

1. A method for detecting fault arcs, comprising a pair of relatively movable arc-generating electrodes for detecting fault arcs, characterized in that, The detection method includes: The two arc generating electrodes are driven to move relative to each other to generate a fault arc; Collect the light energy, heat energy, and corresponding electrical parameters generated by the fault arc; The fault arc is classified and determined based on the light energy, the heat energy, and the electrical parameters.

2. The method for detecting fault arcs according to claim 1, characterized in that, The fault arc is classified and determined, including: The characteristic ratio value is calculated based on the value of the light energy, the value of the heat energy, and the electrical parameters; Compare the feature ratio value with a preset threshold; If the characteristic ratio value is greater than the preset threshold, the current fault arc is determined to be a harmful arc; If the characteristic ratio value is less than or equal to a preset threshold, the current fault arc is determined to be a harmless arc.

3. The method for detecting fault arcs according to claim 2, characterized in that, The electrical parameters include rated current, rated voltage, arcing current, and arcing voltage; the formula for calculating the characteristic ratio H is: ； Where R is the value of the thermal energy, Q is the value of the light energy, I is the value of the rated current, and U is the value of the rated voltage. The arcing current value is... The arcing voltage value is given.

4. The method for detecting fault arcs according to claim 1, characterized in that, The method further includes: The collected light and heat energy are converted into electrical energy and stored.

5. The method for detecting fault arcs according to claim 4, characterized in that, The method further includes: When the main power supply circuit fails, the stored electrical energy is used to power the detection equipment.

6. The method for detecting fault arcs according to claim 4, characterized in that, The method further includes: The stored electrical energy is used to drive the movement of the two arc-generating electrodes.

7. A fault arc detection device, comprising a pair of relatively movable arc-generating electrodes for fault arc detection, characterized in that, The detection device includes: An arc generating unit is configured to drive the two arc generating electrodes to move relative to each other to generate a fault arc; The data acquisition unit is configured to acquire the light energy, heat energy, and corresponding electrical parameters generated by the fault arc; The arc determination unit is configured to classify the fault arc according to the light energy, the heat energy and the electrical parameters.

8. A fault arc detection system, characterized in that, include: The fault arc detection device as described in claim 7.

9. A storage medium, characterized in that, The storage medium includes a stored program, wherein, when the program is executed, it controls the device containing the storage medium to perform the fault arc detection method according to any one of claims 1 to 6.

10. A computer program product, comprising a computer program, characterized in that, When executed by a processor, the computer program implements the steps of the fault arc detection method according to any one of claims 1 to 6.

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