Arcing detection method and device, equipment and storage medium
By acquiring the DC and AC components of the current signal from the photovoltaic power generation system, and combining the arcing detection model and re-inspection mechanism, the problem of timely arcing detection in photovoltaic power generation systems is solved, achieving accurate arcing detection and reducing fire risk.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2026-03-10
AI Technical Summary
In photovoltaic power generation systems, arcing is difficult to detect in a timely manner, leading to a high risk of fire.
By acquiring the DC and AC components of the current signal, an arc detection model is used to determine whether arcing exists, and the DC component signal is used for re-examination to avoid misjudgment.
Accurately detect arcing in circuits to reduce misjudgments and lower fire risk.
Smart Images
Figure CN121633730A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of circuit detection, and in particular to a detection method, device and equipment for arc and a storage medium. BACKGROUND
[0002] With the development of photovoltaic technology, at present, a large number of residential areas, industrial parks and other places are installed with photovoltaic power stations. The photovoltaic power generation system of the photovoltaic power station has high voltage and more circuit connection points. If a connection point appears poor contact, an arc phenomenon will occur. Since the photovoltaic power generation system is direct current without zero point, once the arc is formed, it is difficult to extinguish itself, which will ignite electrical equipment and cause fire.
[0003] Therefore, there is an urgent need for a method capable of detecting arc in a circuit to detect arc as soon as possible so as to cut off the fault circuit in time. SUMMARY
[0004] Embodiments of the present application provide a detection method, device and equipment for arc and a storage medium, which can realize detection of arc in a circuit. The technical solution is as follows:
[0005] In a first aspect, a detection method for arc is provided, and the method comprises:
[0006] obtaining a direct current component signal of a current signal of a to-be-detected circuit;
[0007] obtaining an alternating current component signal of the current signal;
[0008] determining whether the to-be-detected circuit meets an arc existence condition based on the alternating current component signal;
[0009] in a case where the to-be-detected circuit meets the arc existence condition, determining whether the to-be-detected circuit has arc based on the direct current component signal.
[0010] In a possible implementation manner, the determining whether the to-be-detected circuit meets the arc existence condition based on the alternating current component signal comprises:
[0011] determining whether the to-be-detected circuit meets the arc existence condition based on the alternating current component signal and an arc detection model.
[0012] In a possible implementation manner, the determining whether the to-be-detected circuit meets the arc existence condition based on the alternating current component signal and the arc detection model comprises:
[0013] inputting the alternating current component signal into the arc detection model to obtain an arc existence confidence;
[0014] If the confidence level of the arcing reaches a threshold, then the circuit under test is determined to meet the arcing condition.
[0015] If the confidence level of arcing does not reach the threshold, then the circuit under test is determined not to meet the arcing condition.
[0016] In one possible implementation, determining whether arcing exists in the circuit under test based on the DC component signal includes:
[0017] Determine whether the DC component signal meets the DC switching operation conditions;
[0018] If the DC component signal satisfies the DC switch operation conditions, then it is determined that the circuit under test does not have arcing.
[0019] If the DC component signal does not meet the DC switch operation conditions, it is determined that the circuit under test is arcing.
[0020] In one possible implementation, the DC switch operating conditions include DC switch on-conditions and DC switch off-conditions, and determining whether the DC component signal satisfies the DC switch operating conditions includes:
[0021] Determine whether the DC component signal satisfies either the DC switch turn-on condition or the DC switch turn-off condition;
[0022] The step of determining that the circuit under test does not have arcing if the DC component signal satisfies the DC switch operation condition includes:
[0023] If the DC component signal satisfies either the DC switch turn-on condition or the DC switch turn-off condition, then it is determined that the circuit under test does not have arcing.
[0024] The step of determining that the circuit under test has arcing if the DC component signal does not meet the DC switch operation conditions includes:
[0025] If the DC component signal does not meet either the DC switch conduction condition or the DC switch turn-off condition, then it is determined that the circuit under test is arcing.
[0026] Secondly, an arc detection device is provided, the device comprising:
[0027] The acquisition module is used to acquire the DC component signal of the current signal of the circuit under test; and to acquire the AC component signal of the current signal.
[0028] The judgment module is used to determine whether the circuit under test meets the arcing condition based on the AC component signal.
[0029] The re-inspection module is used to determine whether arcing exists in the circuit under test based on the DC component signal, provided that the arcing condition is met.
[0030] In one possible implementation, the determination module is used to:
[0031] Based on the AC component signal and the arc detection model, it is determined whether the circuit under test meets the conditions for the existence of arc.
[0032] In one possible implementation, the determination module is used to:
[0033] The AC component signal is input into the arc detection model to obtain the arc presence confidence level;
[0034] If the confidence level of the arcing reaches a threshold, then the circuit under test is determined to meet the arcing condition.
[0035] If the confidence level of arcing does not reach the threshold, then the circuit under test is determined not to meet the arcing condition.
[0036] In one possible implementation, the re-inspection module is used for:
[0037] Determine whether the DC component signal meets the DC switching operation conditions;
[0038] If the DC component signal satisfies the DC switch operation conditions, then it is determined that the circuit under test does not have arcing.
[0039] If the DC component signal does not meet the DC switch operation conditions, it is determined that the circuit under test is arcing.
[0040] In one possible implementation, the DC switch operating conditions include DC switch on-conditions and DC switch off-conditions, and the re-detection module is used for:
[0041] Determine whether the DC component signal satisfies either the DC switch turn-on condition or the DC switch turn-off condition;
[0042] If the DC component signal satisfies either the DC switch turn-on condition or the DC switch turn-off condition, then it is determined that the circuit under test does not have arcing.
[0043] If the DC component signal does not meet either the DC switch conduction condition or the DC switch turn-off condition, then it is determined that the circuit under test is arcing.
[0044] Thirdly, an electronic device is provided, the electronic device including a processor and a memory, the memory storing at least one instruction, the instruction being loaded and executed by the processor to perform the operation performed by the arc detection method as described in the first aspect and its possible implementations above.
[0045] Fourthly, a computer-readable storage medium is provided, the storage medium storing at least one instruction, the instruction being loaded and executed by a processor to perform the operations performed by the arc detection method as described in the first aspect and its possible implementations above.
[0046] Fifthly, a computer program product is provided, the computer program product comprising at least one instruction loaded and executed by a processor to perform the operations performed by the arc detection method as described in the first aspect and its possible implementations above.
[0047] The beneficial effects of the technical solution provided in this application are:
[0048] In the technical solution provided in this application, the DC component signal and AC component signal of the current signal in the circuit are acquired separately. Because the AC component signal will change significantly when arcing occurs in the circuit, this solution first determines whether the current meets the arcing condition based on the acquired AC component signal. However, when there is a DC switch operation in the circuit, the AC component signal will also exhibit similar characteristics to those when arcing occurs. However, the DC component signal during DC switch operation is significantly different from the DC component signal when arcing occurs. Based on this, the solution provided in this application, after determining that the current meets the arcing condition, can further perform a re-examination based on the DC component signal to avoid misjudgment. Thus, the presence of arcing in the circuit can be accurately detected. Attached Figure Description
[0049] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0050] Figure 1 This is a schematic diagram of the sampling circuit provided in an embodiment of this application;
[0051] Figure 2 This is a flowchart of the arc detection method provided in the embodiments of this application;
[0052] Figure 3This is a schematic diagram of the arc detection device provided in the embodiments of this application;
[0053] Figure 4 This is a schematic diagram of the structure of the electronic device provided in the embodiments of this application. Detailed Implementation
[0054] To facilitate understanding of the embodiments of this application, some terms involved in the embodiments of this application will be explained below.
[0055] I. Arc
[0056] Arcing is a phenomenon that generates high temperature and high energy through electric arc discharge. Its principle involves applying a sufficient voltage between two electrodes, causing electrons to accelerate under the influence of the electric field. When the electrons reach sufficiently high speeds, they collide with atoms or molecules, causing them to lose electrons and form ions. These ions continue to accelerate under the influence of the electric field, eventually forming an electric arc.
[0057] II. Hall Current Sensor
[0058] Hall current sensors are based on the magnetic balance Hall principle. According to the Hall effect principle, when a current is passed through the control current terminal of the Hall element and a magnetic field is applied in the normal direction of the plane of the Hall element, an electric potential will be generated in the direction perpendicular to the current and the magnetic field. This potential is called the Hall potential and its magnitude is proportional to the control current.
[0059] In this embodiment of the application, the Hall current sensor can be installed on the cable of the circuit to be tested to sample the current signal in the circuit.
[0060] III. Low-pass filter
[0061] A low-pass filter is an electronic filter that allows signals below the cutoff frequency to pass through, but blocks signals above the cutoff frequency. In this embodiment, the low-pass filter is used to obtain the DC component signal in a current signal.
[0062] IV. High-pass filter
[0063] A high-pass filter is an electronic filter that allows signals above the cutoff frequency to pass through, but blocks signals below the cutoff frequency. In this embodiment, the high-pass filter is used to obtain the high-frequency AC component signal in a current signal.
[0064] The arc detection method provided in the embodiments of this application will be described below with reference to the accompanying drawings.
[0065] The arcing detection method provided in this application can detect DC arcing and can be applied to various power generation systems such as photovoltaic power generation systems, wind power generation systems, and hydropower generation systems. In the power supply circuit of the power generation system, the voltage is high and there are many circuit connection points. If a connection point has poor contact, arcing will occur. Since DC power is transmitted, and DC power does not have a zero crossing point, once arcing is formed, it is difficult to extinguish itself and may ignite electrical equipment, causing a fire.
[0066] The technical solution provided in this application uses a sampling circuit to collect the DC component signal and the AC component signal of the current signal in the circuit. Then, the AC component signal is first evaluated to determine whether it meets the conditions for arcing. If the AC component signal meets the conditions for arcing, the DC component signal is further re-examined to ultimately determine whether arcing exists in the circuit. This effectively eliminates interference from DC switching operations on arcing detection and allows for more accurate detection of arcing in the circuit.
[0067] In the technical solutions provided in this application, there can be various sampling circuits for sampling AC component signals and DC component signals. One such sampling circuit is described below:
[0068] See Figure 1 The sampling circuit may include a current sensor, a low-pass filter, and a high-pass filter. The current sensor, which can be a Hall effect current sensor, is placed on the circuit to be tested and collects the current signal. The low-pass filter filters the current signal to obtain the lower-frequency DC component. The high-pass filter filters the current signal to obtain the higher-frequency AC component. The cutoff frequency of the low-pass filter is lower than that of the high-pass filter.
[0069] In one possible implementation, the sampling circuit may also include at least one signal scaling device, which is used to reduce or amplify the DC component signal and the AC component signal. The specific method of reduction or amplification can be determined based on the signal amplitude that the device ultimately analyzes and processes the DC component signal and the AC component signal can handle.
[0070] For example, for DC component signals, if the amplitude of the DC component signal output after filtering by a low-pass filter is greater than the signal amplitude that the signal analysis and processing equipment can handle, a signal attenuation device can be placed after the low-pass filter. Conversely, if the amplitude of the DC component signal output after filtering by a low-pass filter is less than the signal amplitude that the signal analysis and processing equipment can handle, a signal amplification device can be placed after the low-pass filter. Similarly, for AC component signals, if the amplitude of the AC component signal output after filtering by a high-pass filter is greater than the signal amplitude that the signal analysis and processing equipment can handle, a signal attenuation device can be placed after the high-pass filter. Conversely, if the amplitude of the AC component signal output after filtering by a high-pass filter is less than the signal amplitude that the signal analysis and processing equipment can handle, a signal amplification device can be placed after the high-pass filter.
[0071] In one possible implementation, the sampling circuit may also include an analog-to-digital converter. Since the current signal collected by the current sensor is an analog signal, an analog-to-digital converter can be set after the low-pass filter and the high-pass filter respectively. The analog-to-digital converter converts the DC component signal and the AC component signal from analog signals into digital signals, which are then input into the signal analysis and processing equipment.
[0072] In one possible implementation, the device for the above signal analysis and processing can be an electronic device that includes a processor, or it can be a standalone processor, such as an MCU (Microcontroller Unit).
[0073] The arc detection method provided in the embodiments of this application is described below. This method can be implemented using the signal analysis and processing equipment described above. See [link to relevant documentation]. Figure 2 The method may include the following steps:
[0074] Step 201: Obtain the DC component signal of the current signal of the circuit under test.
[0075] In implementation, a current sensor in the sampling circuit acquires the current signal from the circuit under test. This current signal is then input to a low-pass filter, which filters out high-frequency AC signals and outputs a DC component signal. The DC component signal is then input to a signal scaling device, which scales the signal. The scaled DC component signal is then input to an analog-to-digital converter (ADC), which performs analog-to-digital conversion, outputting a digital DC component signal. This digital DC component signal is then input to a signal analysis and processing device.
[0076] Step 202: Obtain the AC component signal of the current signal of the circuit under test.
[0077] In implementation, a current sensor in the sampling circuit acquires the current signal from the circuit under test. This current signal is then input to a high-pass filter, which filters out low-frequency DC signals and outputs a high-frequency AC component signal. The AC component signal is then input to a signal scaling device, which scales the signal. The scaled AC component signal is then input to an analog-to-digital converter (ADC), which performs analog-to-digital conversion, outputting the AC component signal as a digital signal. This digital AC component signal is then input to a signal analysis and processing device.
[0078] Step 203: Based on the AC component signal, determine whether the circuit under test meets the conditions for arcing.
[0079] In implementation, the signal analysis and processing equipment can periodically detect both the AC and DC component signals. Specifically, an arc detection cycle can be preset. At the end of each arc detection cycle, the signal analysis and processing unit determines whether the circuit under test meets the conditions for arc presence based on the AC component signal received during that cycle. Various methods can be used for this determination; one example is provided below.
[0080] At the end of each arcing detection cycle, the signal analysis and processing department inputs the AC component signals received during the arcing detection cycle into the arcing detection model in chronological order of reception time. The arcing detection model then inputs the detection results and determines whether the circuit under test meets the conditions for the existence of an arc. Specifically, the detection results can take several forms; two examples are described below:
[0081] Format 1:
[0082] The detection result indicates a certain level of confidence in the presence of arcing. After obtaining the detection result, it is determined whether the confidence level of arcing presence reaches a first threshold. If the confidence level reaches the first threshold, the circuit under test is determined to meet the arcing presence condition. If the confidence level does not reach the first threshold, the circuit under test is determined not to meet the arcing presence condition. The first threshold can be configured by relevant personnel according to actual needs.
[0083] Form Two:
[0084] The detection result is either 0 or 1. If the result is 1, the circuit under test is determined to meet the conditions for arcing. If the result is 0, the circuit under test is determined not to meet the conditions for arcing.
[0085] It is worth noting that which 1 and 0 represents, indicating whether the circuit under test meets the conditions for arcing, and which represents whether the circuit under test does not meet the conditions for arcing, can be configured according to the actual situation. This application does not limit this.
[0086] The arc detection model used in this application embodiment can be a neural network model. Before use, it can be trained with a large number of samples so that the arc detection model learns the characteristics of the AC component signal when arcing occurs.
[0087] Step 204: If the circuit under test meets the conditions for arcing, determine whether arcing exists in the circuit under test based on the DC component signal.
[0088] In implementation, considering the high similarity between the AC component signal during DC switch operation and the AC component signal during arcing, there is a possibility of misjudgment in step 203. Therefore, if it is determined in step 203 that the circuit under test meets the conditions for arcing, in step 204, at the end of each arcing detection cycle, the signal analysis and processing also performs a re-check on whether arcing exists in the circuit under test based on the DC component signal received during that arcing detection cycle. Specifically, the re-check process can be as follows:
[0089] Determine whether the DC component signal received during the arc detection period meets the DC switching operation conditions. If the DC component signal received during the arc detection period meets the DC switching operation conditions, it is determined that DC switching operation exists in the circuit under test, but arcing does not exist. If the DC component signal received during the arc detection period does not meet the DC switching operation conditions, it is determined that arcing exists in the circuit under test, but DC switching operation does not exist.
[0090] The aforementioned DC switch operating conditions can include both DC switch on-conditions and DC switch off-conditions. Correspondingly, the aforementioned re-inspection process can be as follows:
[0091] The system determines whether the DC component signal received during the arcing detection period meets the DC switch conduction condition. If the DC component signal meets the DC switch conduction condition, it is determined that a DC switch conduction operation exists in the circuit under test, and there is no arcing. If the DC component signal received during the arcing detection period meets the DC switch deactivation condition, it is determined that a DC switch deactivation operation exists in the circuit under test, and there is no arcing.
[0092] If the DC component signal received during the arc detection period does not meet the above-mentioned DC switch on-condition or DC switch off-condition, then it is determined that the circuit under test has arcing, but no DC switch operation.
[0093] The aforementioned DC switch on condition can be that the received DC component signal changes from no signal to signal during the arc detection period. The aforementioned DC switch off condition can be that the received DC component signal changes from signal to no signal during the arc detection period.
[0094] In the technical solution provided in this application, the DC component signal and AC component signal of the current signal in the circuit are acquired separately. Because the AC component signal will change significantly when arcing occurs in the circuit, this solution first determines whether the current meets the arcing condition based on the acquired AC component signal. However, when there is a DC switch operation in the circuit, the AC component signal will also exhibit similar characteristics to those when arcing occurs. However, the DC component signal during DC switch operation is significantly different from the DC component signal when arcing occurs. Based on this, the solution provided in this application, after determining that the current meets the arcing condition, can further perform a re-examination based on the DC component signal to avoid misjudgment. Thus, the presence of arcing in the circuit can be accurately detected.
[0095] This application also provides an arc detection device, which can be an electronic device, such as... Figure 3 As shown, the device may include an acquisition module 310, a judgment module 320, and a re-inspection module 330, wherein:
[0096] The acquisition module 310 is used to acquire the DC component signal of the current signal of the circuit under test; and to acquire the AC component signal of the current signal.
[0097] The judgment module 320 is used to determine whether the circuit to be detected meets the arcing condition based on the AC component signal.
[0098] The re-inspection module 330 is used to determine whether arcing exists in the circuit under test based on the DC component signal, provided that the arcing condition is met in the circuit under test.
[0099] In one possible implementation, the determining module 320 is used to:
[0100] Based on the AC component signal and the arc detection model, it is determined whether the circuit under test meets the conditions for the existence of arc.
[0101] In one possible implementation, the determining module 320 is used to:
[0102] The AC component signal is input into the arc detection model to obtain the arc presence confidence level;
[0103] If the confidence level of the arcing reaches a threshold, then the circuit under test is determined to meet the arcing condition.
[0104] If the confidence level of arcing does not reach the threshold, then the circuit under test is determined not to meet the arcing condition.
[0105] In one possible implementation, the re-inspection module 320 is used for:
[0106] Determine whether the DC component signal meets the DC switching operation conditions;
[0107] If the DC component signal satisfies the DC switch operation conditions, then it is determined that the circuit under test does not have arcing.
[0108] If the DC component signal does not meet the DC switch operation conditions, it is determined that the circuit under test is arcing.
[0109] In one possible implementation, the DC switch operating conditions include DC switch on conditions and DC switch off conditions, and the re-test module 330 is used for:
[0110] Determine whether the DC component signal satisfies either the DC switch turn-on condition or the DC switch turn-off condition;
[0111] If the DC component signal satisfies either the DC switch turn-on condition or the DC switch turn-off condition, then it is determined that the circuit under test does not have arcing.
[0112] If the DC component signal does not meet either the DC switch conduction condition or the DC switch turn-off condition, then it is determined that the circuit under test is arcing.
[0113] In the technical solution provided in this application, the DC component signal and AC component signal of the current signal in the circuit are acquired separately. Because the AC component signal will change significantly when arcing occurs in the circuit, this solution first determines whether the current meets the arcing condition based on the acquired AC component signal. However, when there is a DC switch operation in the circuit, the AC component signal will also exhibit similar characteristics to those when arcing occurs. However, the DC component signal during DC switch operation is significantly different from the DC component signal when arcing occurs. Based on this, the solution provided in this application, after determining that the current meets the arcing condition, can further perform a re-examination based on the DC component signal to avoid misjudgment. Thus, the presence of arcing in the circuit can be accurately detected.
[0114] It should be noted that the arc detection device provided in the above embodiments is only illustrated by the division of the functional modules described above. In practical applications, the functions can be assigned to different functional modules as needed, that is, the internal structure of the electronic device can be divided into different functional modules to complete all or part of the functions described above. In addition, the arc detection device and the arc detection method embodiments provided in the above embodiments belong to the same concept, and their specific implementation process can be found in the method embodiments, which will not be repeated here.
[0115] Figure 4 This is a schematic diagram of the structure of an electronic device provided in an embodiment of this application. The electronic device 1000 can vary significantly due to differences in configuration or performance. It may include one or more central processing units (CPUs) 1001 and one or more memories 1002. The memories 1002 store at least one instruction, which is loaded and executed by the processors 1001 to implement the arc detection method provided in the various method embodiments described above. Of course, the computing device may also have wired or wireless network interfaces, a keyboard, and input / output interfaces for input and output. The electronic device may also include other components for implementing device functions, which will not be elaborated upon here.
[0116] In an exemplary embodiment, a computer program product is also provided, the computer program product including at least one instruction, which is loaded and executed by a processor to implement the arc detection method as provided in the various method embodiments described above.
[0117] In an exemplary embodiment, a computer-readable storage medium is also provided, such as a memory including instructions that can be executed by a processor in a terminal to complete the arc detection method in the above embodiments. This computer-readable storage medium can be non-transitory. For example, the computer-readable storage medium can be ROM (Read-Only Memory), RAM (Random Access Memory), CD-ROM (Compact Disc Read-Only Memory), magnetic tape, floppy disk, and optical data storage devices, etc.
[0118] It should be noted that the terms "first," "second," etc., are used to describe various types of information, but this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another, and do not indicate a specific order or degree of importance. In fact, the expressions "first," "second," etc., are completely interchangeable. For example, without departing from the scope of this application, a first threshold can also be referred to as a second threshold, and similarly, a second threshold can also be referred to as a first threshold.
[0119] Furthermore, it should be noted that all information (including but not limited to user equipment information, user personal information, etc.), data (including but not limited to data used for analysis, stored data, displayed data, etc.), and signals (including but not limited to signals transmitted between the user terminal and other devices) involved in this application have been authorized by the user or fully authorized by all parties, and the collection, use, and processing of related data must comply with the relevant laws, regulations, and standards of the relevant countries and regions. For example, the current signals, DC component signals, and AC component signals involved in this application were all obtained under full authorization.
[0120] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware or by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk.
[0121] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A method of detecting a drawn arc, characterized by, The method comprises: obtaining a direct current component signal of a current signal of a to-be-detected circuit; obtaining an alternating current component signal of the current signal; determining, based on the alternating current component signal, whether the to-be-detected circuit satisfies an arc existence condition; in a case where the to-be-detected circuit satisfies the arc existence condition, determining, based on the direct current component signal, whether the to-be-detected circuit has an arc.
2. The method of claim 1, wherein, The determination, based on the alternating current component signal, of whether the to-be-detected circuit satisfies the arc existence condition comprises: determining, based on the alternating current component signal and an arc detection model, whether the to-be-detected circuit satisfies the arc existence condition.
3. The method of claim 2, wherein, The determination, based on the alternating current component signal and the arc detection model, of whether the to-be-detected circuit satisfies the arc existence condition comprises: inputting the alternating current component signal into the arc detection model to obtain an arc existence confidence; if the arc existence confidence reaches a threshold, determining that the to-be-detected circuit satisfies the arc existence condition; if the arc existence confidence does not reach the threshold, determining that the to-be-detected circuit does not satisfy the arc existence condition.
4. The method according to any one of claims 1 to 3, characterized in that, The determination, based on the direct current component signal, of whether the to-be-detected circuit has the arc comprises: determining whether the direct current component signal satisfies a direct current switch operation condition; if the direct current component signal satisfies the direct current switch operation condition, determining that the to-be-detected circuit does not have the arc; if the direct current component signal does not satisfy the direct current switch operation condition, determining that the to-be-detected circuit has the arc.
5. The method of claim 4, wherein, The direct current switch operation condition comprises a direct current switch turn-on condition and a direct current switch turn-off condition, and the determination of whether the direct current component signal satisfies the direct current switch operation condition comprises: determining whether the direct current component signal satisfies any one of the direct current switch turn-on condition and the direct current switch turn-off condition; if the direct current component signal satisfies any one of the direct current switch turn-on condition and the direct current switch turn-off condition, determining that the to-be-detected circuit does not have the arc; if the direct current component signal does not satisfy the direct current switch turn-on condition and the direct current switch turn-off condition, determining that the to-be-detected circuit has the arc. The apparatus comprises: an obtaining module, configured to obtain a direct current component signal of a current signal of a to-be-detected circuit, and obtain an alternating current component signal of the current signal; 6. An apparatus for detecting a drawn arc, characterized in that a determining module, configured to determine, based on the alternating current component signal, whether the to-be-detected circuit satisfies an arc existence condition; a rechecking module, configured to, in a case where the to-be-detected circuit satisfies the arc existence condition, determine, based on the direct current component signal, whether the to-be-detected circuit has an arc. The determining module is configured to: determine, based on the alternating current component signal and an arc detection model, whether the to-be-detected circuit satisfies the arc existence condition.
7. The apparatus of claim 6, wherein, The determining module is configured to: 8. The apparatus of claim 7, wherein, input the AC component signal into the arc detection model to obtain an arc existence confidence; if the arc existence confidence reaches a threshold, it is determined that the to-be-detected circuit meets an arc existence condition; if the arc existence confidence does not reach the threshold, it is determined that the to-be-detected circuit does not meet the arc existence condition.
9. The apparatus of any one of claims 6-8, wherein, The rechecking module is configured to: determine whether the DC component signal meets a DC switch operation condition; if the DC component signal meets the DC switch operation condition, it is determined that the to-be-detected circuit does not exist an arc; if the DC component signal does not meet the DC switch operation condition, it is determined that the to-be-detected circuit exists an arc.
10. The apparatus of claim 9, wherein, The DC switch operation condition includes a DC switch turn-on condition and a DC switch turn-off condition, and the rechecking module is configured to: determine whether the DC component signal meets any one of the DC switch turn-on condition and the DC switch turn-off condition; if the DC component signal meets any one of the DC switch turn-on condition and the DC switch turn-off condition, it is determined that the to-be-detected circuit does not exist an arc; if the DC component signal does not meet any one of the DC switch turn-on condition and the DC switch turn-off condition, it is determined that the to-be-detected circuit exists an arc.
11. An electronic device, comprising: The electronic device includes a processor and a memory, and the memory stores at least one instruction, which is loaded and executed by the processor to implement the operations performed by the arc detection method according to any one of claims 1 to 5.
12. A computer-readable storage medium, characterized in that, The storage medium stores at least one instruction, which is loaded and executed by the processor to implement the operations performed by the arc detection method according to any one of claims 1 to 5.