Phase checking method and device of switch cabinet, computer equipment, storage medium and product

Abstract

The invention relates to a phase checking method and device of a switch cabinet, computer equipment, a storage medium and a product. The method comprises the following steps: receiving an original electric signal sent by a detection antenna array; wherein the detection antenna array is composed of a Hall effect sensor, the original electric signal is obtained by converting a received magnetic field signal by the detection antenna array, and the magnetic field signal is generated by a three-phase cable in the switch cabinet; performing frequency domain processing on the original electric signal to obtain a frequency domain signal; and determining a nuclear phase result of the switch cabinet according to the frequency domain signal. By adopting the method, phase checking can be carried out on the switch cabinet accurately and efficiently.

Description

Technical Field

[0001] The present application relates to the technical field of switchgear monitoring, and in particular to a phase checking method, device, computer equipment, storage medium and product for a switchgear. Background Art

[0002] With the rapid development of power systems, demands for power supply reliability and safety are becoming increasingly stringent. Live-line closing is a crucial component of power supply security, and phase verification prior to grid connection is an industry-required standard. As a crucial component of power systems, the correct arrangement of the high-voltage A, B, and C phases within switchgear is crucial for stable system operation. In practice, live-line closing operations between switchgears require consistent alignment of the high-voltage A, B, and C phases within the switchgear to avoid equipment damage and grid accidents caused by incorrect phase sequences.

[0003] At present, the traditional phase checking method of switchgear often requires the switchgear secondary live indicator or power outage operation. The main function of the live indicator is to indicate whether the switchgear is energized. It is not a standard phase checking point. As a result, switchgears from different manufacturers may have different degrees of phase shift, low voltage, waveform distortion, mixed lines, etc. at the live indicator test hole, resulting in some switchgears being unable to accurately check the phase or even unable to check the phase. Summary of the Invention

[0004] Based on this, it is necessary to provide a switch cabinet phase checking method, device, computer equipment, storage medium and product to address the above technical problems, which can accurately and efficiently check the phase of the switch cabinet.

[0005] In a first aspect, the present application provides a phase checking method for a switch cabinet, comprising:

[0006] Receive the original electrical signal sent by the detection antenna array; wherein the detection antenna array is composed of Hall effect sensors, and the original electrical signal is obtained by the detection antenna array converting the received magnetic field signal, and the magnetic field signal is generated by the three-phase cable in the switch cabinet;

[0007] Performing frequency domain processing on the original electrical signal to obtain a frequency domain signal;

[0008] A phase check result of the switch cabinet is determined according to the frequency domain signal.

[0009] In one embodiment, the method further comprises:

[0010] Determining the number and arrangement of detection antennas according to the arrangement of the three-phase cables in the switch cabinet and the physical properties of the switch cabinet;

[0011] The detection antenna array is determined according to the number and arrangement of the detection antennas.

[0012] In one embodiment, performing frequency domain processing on the original electrical signal to obtain a frequency domain signal includes:

[0013] Filtering and amplifying the original electrical signal to obtain a target electrical signal;

[0014] Performing fast Fourier transform on the target electrical signal to obtain a frequency domain signal.

[0015] In one embodiment, filtering and amplifying the original electrical signal to obtain the target electrical signal includes:

[0016] Determine the active filter circuit and amplifier circuit according to the phase-correction requirements of the switch cabinet;

[0017] Using the active filter circuit to filter the original electrical signal to obtain a filtered original electrical signal;

[0018] The amplifier circuit is used to amplify the original electric signal after filtering to obtain the target electric signal.

[0019] In one embodiment, the three-phase cable includes a first-phase cable, a second-phase cable, and a third-phase cable; the frequency domain signal includes a first-phase specific frequency component, a second-phase specific frequency component, and a third-phase specific frequency component;

[0020] Determining the phase verification result of the switch cabinet according to the frequency domain signal of the original electrical signal includes:

[0021] determining a first phase characteristic according to a first phase specific frequency component in the frequency domain signal;

[0022] determining a second-phase phase characteristic according to a second-phase specific frequency component in the frequency domain signal;

[0023] determining a third-phase phase characteristic according to a third-phase specific frequency component in the frequency domain signal;

[0024] A phase checking result of the switch cabinet is determined according to the first phase characteristic, the second phase characteristic, and the third phase characteristic.

[0025] In one embodiment, determining the phase checking result of the switchgear according to the first phase characteristic, the second phase characteristic, and the third phase characteristic includes:

[0026] Determining actual phase angle information of the three-phase cable based on the first phase characteristic, the second phase characteristic, and the third phase characteristic based on a phase recognition model;

[0027] Sending the phase angle information of the three-phase cable to a phase detection device, so that the phase detection device performs phase checking on the switch cabinet according to the actual phase angle information and the standard power frequency phase angle information collected by the phase detection device;

[0028] The phase detection result sent by the phase detection device is received, and the arrangement order of the first-phase cable, the second-phase cable, and the third-phase cable in the switch cabinet is determined according to the phase detection result.

[0029] In a second aspect, the present application further provides a phase checking device for a switch cabinet, comprising:

[0030] A signal receiving module, configured to receive an original electrical signal transmitted by a detection antenna array, wherein the detection antenna array is composed of Hall effect sensors, and the original electrical signal is obtained by converting a received magnetic field signal generated by a three-phase cable in the switch cabinet by the detection antenna array;

[0031] A signal processing module, configured to perform frequency domain processing on the original electrical signal to obtain a frequency domain signal;

[0032] A phase checking module is used to determine a phase checking result of the switch cabinet according to the frequency domain signal.

[0033] In a third aspect, the present application further provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0034] Receive the original electrical signal sent by the detection antenna array; wherein the detection antenna array is composed of Hall effect sensors, and the original electrical signal is obtained by the detection antenna array converting the received magnetic field signal, and the magnetic field signal is generated by the three-phase cable in the switch cabinet;

[0035] Performing frequency domain processing on the original electrical signal to obtain a frequency domain signal;

[0036] A phase check result of the switch cabinet is determined according to the frequency domain signal.

[0037] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, wherein when the computer program is executed by a processor, the following steps are implemented:

[0038] Receive the original electrical signal sent by the detection antenna array; wherein the detection antenna array is composed of Hall effect sensors, and the original electrical signal is obtained by the detection antenna array converting the received magnetic field signal, and the magnetic field signal is generated by the three-phase cable in the switch cabinet;

[0039] Performing frequency domain processing on the original electrical signal to obtain a frequency domain signal;

[0040] A phase check result of the switch cabinet is determined according to the frequency domain signal.

[0041] In a fifth aspect, the present application further provides a computer program product, comprising a computer program, which, when executed by a processor, implements the following steps:

[0042] Receive the original electrical signal sent by the detection antenna array; wherein the detection antenna array is composed of Hall effect sensors, and the original electrical signal is obtained by the detection antenna array converting the received magnetic field signal, and the magnetic field signal is generated by the three-phase cable in the switch cabinet;

[0043] Performing frequency domain processing on the original electrical signal to obtain a frequency domain signal;

[0044] A phase check result of the switch cabinet is determined according to the frequency domain signal.

[0045] The above-mentioned phase verification method, device, computer equipment, storage medium and product of the switch cabinet receive the original electrical signal sent by the detection antenna array; wherein the detection antenna array is composed of Hall effect sensors, and the original electrical signal is obtained by the detection antenna array converting the received magnetic field signal, and the magnetic field signal is generated by the three-phase cable in the switch cabinet; the original electrical signal is processed in the frequency domain to obtain a frequency domain signal; based on the frequency domain signal, the phase verification result of the switch cabinet is determined. The above-mentioned scheme, by constructing a detection antenna array through Hall effect sensors, can accurately receive the magnetic field signal generated by the three-phase cable in the switch cabinet, and accurately convert the received magnetic field signal into the original electrical signal; at the same time, by performing frequency domain processing on the original signal, it is ensured that the obtained frequency domain signal contains rich phase characteristics, thereby ensuring the accuracy of the phase verification result obtained according to the frequency domain signal, improving the safety of high-voltage power equipment, and effectively avoiding electrical faults caused by incorrect three-phase arrangement to ensure the efficient and stable operation of power equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0047] Figure 1 FIG. 1 is an application environment diagram of a phase checking method for a switch cabinet in one embodiment;

[0048] Figure 21 is a flow chart of a phase checking method for a switch cabinet in one embodiment;

[0049] Figure 3 A schematic diagram of a Hall effect sensor in one embodiment;

[0050] Figure 4 A schematic diagram of a process for determining a detection antenna array in one embodiment;

[0051] Figure 5 FIG1 is a flow chart of filtering and amplifying an original electrical signal in one embodiment;

[0052] Figure 6 A schematic diagram of a process for determining a phase check result of a switch cabinet in one embodiment;

[0053] Figure 7 Schematic diagram of a flow chart of a phase checking method for a switch cabinet in another embodiment;

[0054] Figure 8 1. It is a structural block diagram of a phase checking device of a switch cabinet in one embodiment;

[0055] Figure 9 FIG. 1 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0056] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0057] The switch cabinet phase checking method provided in the embodiment of the present application can be applied to Figure 1 In the application environment shown. Among them, the phase checking device 101 is used to check the phase of the switch cabinet; the detection antenna array 102 is installed on the switch cabinet 103, and is used to receive the magnetic field signal generated by the three-phase cable in the switch cabinet 103. The phase detection device 104 is the background equipment of the switch cabinet, which can be a server base station, used to collect the phase angle information of the standard industrial frequency three-phase, and can also receive the signal sent by the phase checking device. Optionally, the phase checking device 101 receives the original electrical signal sent by the detection antenna array 102; wherein, the detection antenna array is composed of a Hall effect sensor, and the original electrical signal is obtained by converting the received magnetic field signal by the detection antenna array 102, and the magnetic field signal is generated by the three-phase cable in the switch cabinet 103; the original electrical signal is processed in the frequency domain to obtain a frequency domain signal; according to the frequency domain signal, the phase checking result of the switch cabinet is determined.

[0058] In one embodiment, Figure 2 As shown, a phase check method for a switch cabinet is provided, which is applied to Figure 1The nuclear phase device 101 in the embodiment is used as an example to illustrate the invention, which specifically includes the following steps:

[0059] S201: Receive and detect the original electrical signal sent by the antenna array.

[0060] The detection antenna array is composed of Hall effect sensors, and the original electrical signal is obtained by converting the received magnetic field signal by the detection antenna array. The magnetic field signal is generated by the three-phase cable in the switch cabinet. Figure 3 The figure below shows the schematic diagram of the Hall effect sensor. S is the south pole of the Hall effect sensor, and N is the north pole of the Hall effect sensor.

[0061] In the embodiment of the present application, taking into account the characteristics of the Hall effect sensor such as high sensitivity, high reliability and being unaffected by external conditions such as temperature and humidity, it is possible to ensure accurate capture of weak magnetic field signals and improve the accuracy and reliability of detection; in realizing the acquisition of the magnetic field signal generated by the high-voltage line in the switch cabinet, the Hall effect sensor is used as a detection antenna, which is responsible for receiving and converting the magnetic field signal generated by the high-voltage line in the switch cabinet.

[0062] Furthermore, in order to ensure full coverage of the three-phase cables in the switch cabinet, the detection antennas are arranged at multiple angles and points to form a detection antenna array. Multi-angle arrangement means adding more antennas on the vertical plane to achieve full coverage, detecting as many signals from different directions as possible on the horizontal plane, and using tilt angles in complex locations or structures to increase the flexibility of signal coverage and avoid interference and conflict between signals; multi-point arrangement ensures that all three phases receive balanced signals in a uniform distribution, and coverage avoids the occurrence of signal blind spots or weak areas. Strengthen the layout at key points to ensure the accurate acquisition and timely transmission of key monitoring data, thereby improving the reliability and stability of the system.

[0063] Therefore, after the detection antenna array is deployed, it can receive the magnetic field signals generated by the three-phase cables within the switchgear even when the switchgear is not open. Furthermore, the detection antenna array converts the received magnetic field signals into electrical signals using the Hall effect elements within it. Finally, the detection antenna array transmits the converted electrical signals as the original electrical signals to the phase verification device, which then receives the original electrical signals transmitted by the detection antenna array.

[0064] S202: Perform frequency domain processing on the original electrical signal to obtain a frequency domain signal.

[0065] The frequency domain signal is the signal of the original electrical signal in the frequency domain.

[0066] Optionally, a fast Fourier transform (FFT) algorithm can be used to perform frequency domain analysis on the original electrical signal to obtain a frequency domain signal of the original electrical signal. The FFT algorithm is an efficient signal processing algorithm that can quickly convert a time domain signal into a frequency domain signal, thereby clearly showing the distribution of the signal at different frequency components, facilitating the identification and analysis of the signal's frequency components and their phase relationships.

[0067] Furthermore, in one embodiment, to ensure the signal quality of the original electrical signal, the original electrical signal may be filtered and amplified to obtain a target electrical signal, and the target electrical signal may be subjected to a fast Fourier transform to obtain a frequency domain signal. Specifically, the original electrical signal is filtered to remove interference clutter, and further, the filtered original electrical signal is amplified to improve the signal-to-noise ratio of the original electrical signal, thereby ensuring the stability and accuracy of the obtained target electrical signal and further ensuring the accuracy of the obtained frequency domain signal.

[0068] S203: Determine the phase verification result of the switch cabinet according to the frequency domain signal.

[0069] The phase checking result includes the arrangement sequence of the three-phase cables in the switch cabinet.

[0070] Optionally, a support vector machine (SVM) or artificial neural network (ANN) classification algorithm can be used to identify the phase characteristics of frequency domain signals to determine the arrangement order of the switchgear's three-phase cables. Based on statistical learning theory, the SVM algorithm can construct an efficient classification model even with small sample sizes. By finding an optimal classification hyperplane, it accurately separates different categories of phase characteristic data. The ANN classification algorithm, on the other hand, mimics the neuronal structure of the human brain, building a multi-layer neural network model to learn and train large amounts of phase characteristic data, resulting in powerful pattern recognition capabilities. Through the SVM and ANN classification algorithms, regardless of small sample sizes or nonlinear or high-dimensional data, the SVM processing and the ANN classification algorithm's learning capabilities can accurately and quickly determine the arrangement order of the three-phase cables within the switchgear based on the extracted phase characteristics, providing core data support for the system's intelligent control and decision-making.

[0071] Therefore, a phase recognition model can be constructed and trained in advance through a support vector machine or artificial neural network classification algorithm. Furthermore, the frequency domain signal is input into the trained phase recognition model, and the output of the phase recognition model is used as the phase kernel result of the switch cabinet.

[0072] In the above-mentioned phase verification method of the switch cabinet, the original electrical signal sent by the detection antenna array is received; wherein the detection antenna array is composed of Hall effect sensors, and the original electrical signal is obtained by the detection antenna array converting the received magnetic field signal, and the magnetic field signal is generated by the three-phase cable in the switch cabinet; the original electrical signal is processed in the frequency domain to obtain a frequency domain signal; based on the frequency domain signal, the phase verification result of the switch cabinet is determined. The above-mentioned scheme, by constructing a detection antenna array through Hall effect sensors, can accurately receive the magnetic field signal generated by the three-phase cable in the switch cabinet, and accurately convert the received magnetic field signal into the original electrical signal; at the same time, by performing frequency domain processing on the original signal, it is ensured that the obtained frequency domain signal contains rich phase characteristics, thereby ensuring the accuracy of the phase verification result obtained according to the frequency domain signal, improving the safety of high-voltage power equipment, and effectively avoiding electrical faults caused by incorrect three-phase arrangement to ensure the efficient and stable operation of power equipment.

[0073] Optionally, in one embodiment, Figure 4 As shown, a method for determining a detection antenna array is provided, which specifically includes the following steps:

[0074] S401 : Determine the number and arrangement of detection antennas according to the arrangement of the three-phase cables in the switch cabinet and the physical properties of the switch cabinet.

[0075] The physical properties of the switchgear include but are not limited to the size, structure and material of the switchgear.

[0076] Understandably, different switchgear arrangements require different detection antenna arrays. For vertically arranged switchgear, only the outermost phase can be detected, making it impossible to determine the correct arrangement of the three phases. This requires a new matrix antenna and signal processing circuit technology to accurately determine the arrangement of the three phases within the switchgear and ensure the completion of live closing.

[0077] In an embodiment of the present application, a matrix antenna array consisting of multiple detection antennas is designed, and antenna types with high sensitivity, wide bandwidth and good directivity are selected. These detection antennas are carefully arranged on the outside of the switch cabinet to form comprehensive coverage of the three-phase cables inside the switch cabinet. The number and position of the detection antennas are determined according to the size, structure and material of the switch cabinet and the arrangement of the three-phase cables to ensure that each phase can be effectively monitored.

[0078] S402: Determine a detection antenna array according to the number and arrangement of detection antennas.

[0079] Optionally, the installation position and installation method of the detection antenna array may be determined according to the number and arrangement of the detection antennas.

[0080] In this embodiment, by comprehensively considering the arrangement of the three-phase cables in the switch cabinet and the physical properties of the switch cabinet, the accuracy of the installed detection antenna array is guaranteed, so that each phase in the high-voltage cabinet can be effectively monitored.

[0081] Optionally, in one embodiment, Figure 5 As shown, a method for filtering and amplifying an original electrical signal is provided, which specifically includes the following steps:

[0082] S501: Determine the active filter circuit and the amplifier circuit according to the phase-correction requirements of the switch cabinet.

[0083] The phase-correction requirements of the switchgear include, but are not limited to, filtering requirements and signal quality requirements. The active filter circuit is used to filter the signal; the amplifier circuit is used to amplify the signal.

[0084] Optionally, removing clutter interference is an important step in signal processing. Compared with passive filters, active filters are more flexible in design, have the dual functions of signal amplification and filtering, and can adapt to more complex signal environments. In the embodiment of the present application, the filtering requirements for the original electrical signal can be determined based on the core phase requirements of the switch cabinet. Furthermore, based on the filtering requirements, a suitable active filter type can be selected, and the active filter circuit can be further designed. Designing an active filter circuit is the core step of active filter design, which is: selecting the circuit topology according to the actual specific needs, calculating the parameter values ​​of components such as resistance and capacitance in the circuit according to the performance indicators of the filter (such as cutoff frequency, passband gain, stopband attenuation, etc.), and selecting an operational amplifier with low noise, high input impedance, high bandwidth and other characteristics to ensure good performance of the filter.

[0085] Optionally, in an embodiment of the present application, it is necessary to determine the signal quality requirements of the original electrical signal based on the core phase requirements of the switch cabinet, and select a suitable high-precision operational amplifier based on the signal quality requirements: select an operational amplifier with low noise density and low-frequency noise to reduce the noise introduced by the amplifier itself; high input impedance can reduce the impact of the signal source on the amplifier input and improve the signal transmission efficiency; ensure that the bandwidth of the operational amplifier is wide enough to cover the frequency range of the signal to be amplified; at the same time, there must be sufficient gain capability to meet the needs of signal amplification; select an operational amplifier with low distortion and high stability to ensure that the amplified signal maintains the waveform and characteristics of the original signal. After selecting the operational amplifier, further design the amplification circuit, select the appropriate circuit topology according to the requirements, calculate the parameter values ​​of components such as resistance and capacitance in the circuit according to the required performance indicators such as gain, input impedance and output impedance, and ensure that the circuit is well grounded to reduce noise and interference.

[0086] S502 , using an active filter circuit to filter the original electrical signal to obtain a filtered original electrical signal.

[0087] Optionally, an active filtering circuit may be used to filter the original electrical signal to remove noise interference in the original electrical signal and obtain a filtered original electrical signal.

[0088] S503: Using an amplifier circuit, amplify the filtered original electrical signal to obtain a target electrical signal.

[0089] Optionally, an amplifier circuit may be used to amplify the original electric signal after filtering, so as to improve the signal-to-noise ratio of the original electric signal after filtering and obtain a target electric signal.

[0090] In this embodiment, the phase-correlation requirements of the switch cabinet are comprehensively considered to ensure that the determined active filtering circuit and amplification circuit meet the actual requirements, thereby ensuring the accuracy and signal quality of the target electrical signal after filtering and amplification processing.

[0091] Optionally, the three-phase cable includes a first-phase cable, a second-phase cable, and a third-phase cable; the frequency domain signal includes a first-phase specific frequency component, a second-phase specific frequency component, and a third-phase specific frequency component; on this basis, in one embodiment, as Figure 6 As shown, a method for determining the phase check result of a switch cabinet is provided, which specifically includes the following steps:

[0092] S601 : Determine a first phase phase feature according to a first phase specific frequency component in a frequency domain signal.

[0093] The first-phase phase characteristic represents the phase characteristic of the first-phase cable in the switch cabinet.

[0094] Optionally, a fast Fourier transform (FFT) can be performed on the original electrical signal to identify specific frequency components related to the switchgear's three-phase cables. This, combined with the spatial magnetic field distribution and the phase relationship between the three-phase cables, provides a key basis for determining the three-phase arrangement sequence.

[0095] Therefore, the first-phase specific frequency component can be extracted from the frequency domain signal obtained after fast Fourier transform; further, by performing frequency domain analysis on the first-phase specific frequency component, the first-phase phase characteristics can be obtained.

[0096] S602: Determine a second-phase phase feature according to a second-phase specific frequency component in the frequency domain signal.

[0097] Accordingly, the second-phase specific frequency component can be extracted from the frequency domain signal obtained after fast Fourier transform; further, by performing frequency domain analysis on the second-phase specific frequency component, the second-phase phase characteristics can be obtained.

[0098] S603 : Determine a third-phase phase feature according to the third-phase specific frequency component in the frequency domain signal.

[0099] Accordingly, the specific frequency component of the third phase can be extracted from the frequency domain signal obtained after fast Fourier transform; further, by performing frequency domain analysis on the specific frequency component of the third phase, the phase characteristics of the third phase can be obtained.

[0100] S604 : Determine a phase check result of the switchgear according to the first phase characteristic, the second phase characteristic, and the third phase characteristic.

[0101] Optionally, based on the phase recognition model, the actual phase angle information of the three-phase cable can be determined according to the phase characteristics of the first phase, the second phase, and the third phase; the phase angle information of the three-phase cable is sent to the phase detection device, so that the phase detection device performs phase verification on the switch cabinet based on the actual phase angle information and the standard power frequency phase angle information collected by the phase detection device; the phase verification results sent by the phase detection device are received, and the arrangement order of the first-phase cable, the second-phase cable, and the third-phase cable in the switch cabinet is determined based on the phase verification results. The phase recognition model is used to identify the phase angle information of the three-phase cable in the switch cabinet; in the embodiment of the present application, the phase recognition model can be constructed and trained using a support vector machine or an artificial neural network classification algorithm.

[0102] Furthermore, the first-phase phase feature, the second-phase phase feature and the third-phase phase feature can be input into the phase recognition model, so that the phase recognition model calculates the first-phase phase feature, the second-phase phase feature and the third-phase phase feature according to the model parameters obtained by training to obtain the actual phase angle information of the three-phase cable in the switch cabinet.

[0103] Furthermore, the actual phase angle information is sent to the phase detection device. At the same time, the phase detection device collects the standard power frequency three-phase information at the location of the switch cabinet in real time and obtains the standard power frequency phase angle information; the phase detection device compares the received actual phase angle information with the collected standard power frequency phase angle information, and obtains the phase verification result of the switch cabinet based on the comparison result, and finally sends the phase verification result to the phase verification device.

[0104] Therefore, the phase checking device can obtain the arrangement order of the first-phase cable, the second-phase cable and the third-phase cable in the switch cabinet according to the received phase checking result.

[0105] In this embodiment, by introducing the first phase phase feature, the second phase phase feature and the third phase phase feature, since the phase features contain the arrangement rules of the three-phase cables in the switch cabinet, the accuracy of the phase check result of the determined switch cabinet is guaranteed.

[0106] In an embodiment of the present application, the nuclear phase device includes an embedded system based on a microcontroller unit, and a high-resolution liquid crystal display or organic light-emitting diode display. Among them, the embedded system based on the microcontroller unit realizes signal acquisition, processing and discrimination. The system adopts a modular design. The embedded system serves as the core control unit of the entire system and integrates multiple functional modules such as a central processing unit, a memory, and an input and output interface. It can control and process the signals collected by the Hall effect sensor in real time, coordinate the workflow between various modules such as active filters, signal amplification circuits, and data analysis and processing algorithms, and ensure that the entire system runs in an orderly manner. At the same time, the system supports remote configuration and upgrading, which is convenient for later maintenance and function expansion. The embedded system is also responsible for transmitting the final discrimination results to the display module for display, realizing fully automated operation from signal acquisition to result display, greatly improving the intelligence level and work efficiency of the system.

[0107] High-resolution LCD or OLED displays are used to intuitively display the identification and data results in real time, facilitating quick decision-making by operators. LCDs offer clear and stable display capabilities, intuitively displaying the three-phase sequence identification results and related system operation information. OLED displays, on the other hand, offer advantages such as self-luminescence, high contrast, and a wide viewing angle, providing operators with clearer, more vivid displays in varying lighting conditions. Using either display, operators can instantly obtain status information on the three-phase circuits within the switchgear. Operators can quickly grasp this information and make swift operational decisions based on the identification results, such as whether to perform live loop closing operations. This not only improves work efficiency but also enhances the practicality and usability of the entire system, effectively ensuring the safe and stable operation of the power system.

[0108] Figure 7 This is a flow chart of a phase checking method for a switch cabinet in another embodiment. Based on the above embodiment, this embodiment provides an optional example of a phase checking method for a switch cabinet. In conjunction with 7, the specific implementation process is as follows:

[0109] S701: Determine the number and arrangement of detection antennas according to the arrangement of three-phase cables in the switch cabinet and the physical properties of the switch cabinet.

[0110] S702: Determine a detection antenna array according to the number and arrangement of detection antennas.

[0111] S703: Receive and detect the original electrical signal sent by the antenna array.

[0112] The detection antenna array is composed of Hall effect sensors. The original electrical signal is obtained by converting the received magnetic field signal by the detection antenna array. The magnetic field signal is generated by the three-phase cable in the switch cabinet.

[0113] S704: Determine the active filter circuit and amplifier circuit based on the phase-correction requirements of the switch cabinet.

[0114] S705 , using an active filter circuit to filter the original electrical signal to obtain a filtered original electrical signal.

[0115] S706 , using an amplifier circuit to amplify the filtered original electrical signal to obtain a target electrical signal.

[0116] S707, performing fast Fourier transform on the target electrical signal to obtain a frequency domain signal.

[0117] S708 : Determine a first phase phase feature according to the first phase specific frequency component in the frequency domain signal.

[0118] S709 , determining a second-phase phase feature according to the second-phase specific frequency component in the frequency domain signal.

[0119] S710 , determining a third-phase phase characteristic according to a third-phase specific frequency component in the frequency domain signal.

[0120] S711 : Determine a phase check result of the switchgear according to the first phase characteristic, the second phase characteristic, and the third phase characteristic.

[0121] Optionally, based on the phase recognition model, the arrangement order of the first-phase cable, the second-phase cable and the third-phase cable in the switch cabinet is determined according to the first-phase phase characteristics, the second-phase phase characteristics and the third-phase phase characteristics.

[0122] The specific process of S701-S711 can be found in the description of the above method embodiment. The implementation principle and technical effects are similar and will not be repeated here.

[0123] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0124] Based on the same inventive concept, embodiments of the present application also provide a switchgear phase checking device for implementing the aforementioned switchgear phase checking method. The solution provided by this device is similar to the solution described in the aforementioned method. Therefore, the specific limitations of the following embodiments of one or more switchgear phase checking devices can be found in the aforementioned limitations of the switchgear phase checking method and are not further elaborated here.

[0125] In an exemplary embodiment, Figure 8 As shown, a phase checking device 800 for a switch cabinet is provided, comprising: a signal receiving module 810, a signal processing module 820 and a phase checking module 830, wherein:

[0126] The signal receiving module 810 is used to receive the original electrical signal sent by the detection antenna array; wherein the detection antenna array is composed of Hall effect sensors, and the original electrical signal is obtained by the detection antenna array converting the received magnetic field signal, and the magnetic field signal is generated by the three-phase cable in the switch cabinet.

[0127] The signal processing module 820 is used to perform frequency domain processing on the original electrical signal to obtain a frequency domain signal.

[0128] The phase checking module 830 is used to determine the phase checking result of the switch cabinet according to the frequency domain signal.

[0129] The phase checking device of the switch cabinet receives the original electrical signal sent by the detection antenna array; wherein the detection antenna array is composed of Hall effect sensors, and the original electrical signal is obtained by converting the received magnetic field signal by the detection antenna array, and the magnetic field signal is generated by the three-phase cable in the switch cabinet; the original electrical signal is processed in the frequency domain to obtain a frequency domain signal; based on the frequency domain signal, the phase checking result of the switch cabinet is determined. The above scheme, by constructing a detection antenna array through Hall effect sensors, can accurately receive the magnetic field signal generated by the three-phase cable in the switch cabinet, and accurately convert the received magnetic field signal into the original electrical signal; at the same time, by performing frequency domain processing on the original signal, it is ensured that the obtained frequency domain signal contains rich phase characteristics, thereby ensuring the accuracy of the phase checking result obtained based on the frequency domain signal, improving the safety of high-voltage power equipment, and effectively avoiding electrical faults caused by incorrect three-phase arrangement to ensure the efficient and stable operation of power equipment.

[0130] In one embodiment, the phase checking device 800 of the switch cabinet further includes:

[0131] The arrangement determination module is used to determine the number and arrangement of the detection antennas according to the arrangement of the three-phase cables in the switch cabinet and the physical properties of the switch cabinet.

[0132] The array determination module is used to determine the detection antenna array according to the number and arrangement of the detection antennas.

[0133] In one embodiment, the signal processing module 820 further includes:

[0134] The signal processing unit is used to filter and amplify the original electrical signal to obtain the target electrical signal.

[0135] The signal conversion unit is used to perform fast Fourier transform on the target electrical signal to obtain a frequency domain signal.

[0136] In one embodiment, the signal processing unit is specifically configured to:

[0137] According to the phase-correction requirements of the switchgear, the active filtering circuit and the amplifying circuit are determined; the active filtering circuit is used to filter the original electrical signal to obtain the filtered original electrical signal; the amplifying circuit is used to amplify the filtered original electrical signal to obtain the target electrical signal.

[0138] In one embodiment, the three-phase cable includes a first-phase cable, a second-phase cable, and a third-phase cable; the frequency domain signal includes a first-phase specific frequency component, a second-phase specific frequency component, and a third-phase specific frequency component; the phase checking module 830 includes:

[0139] The first determining unit is configured to determine a first phase characteristic according to a first phase specific frequency component in the frequency domain signal.

[0140] The second determining unit is configured to determine a second phase characteristic according to a second phase specific frequency component in the frequency domain signal.

[0141] The third determining unit is configured to determine a third phase phase feature according to a third phase specific frequency component in the frequency domain signal.

[0142] The phase checking unit is used to determine the phase checking result of the switch cabinet according to the first phase phase feature, the second phase phase feature and the third phase phase feature.

[0143] In one embodiment, the core phase unit is specifically used to:

[0144] Based on the phase recognition model, the actual phase angle information of the three-phase cable is determined according to the phase characteristics of the first phase, the second phase and the third phase; the phase angle information of the three-phase cable is sent to the phase detection device, so that the phase detection device performs phase verification on the switch cabinet according to the actual phase angle information and the standard power frequency phase angle information collected by the phase detection device; the phase verification result sent by the phase detection device is received, and the arrangement order of the first phase cable, the second phase cable and the third phase cable in the switch cabinet is determined according to the phase verification result.

[0145] Each module in the aforementioned switchgear phase control device may be implemented in whole or in part through software, hardware, or a combination thereof. Each module may be embedded in or independent of a processor in a computer device in hardware form, or may be stored in a computer device memory in software form, so that the processor can call and execute the corresponding operations of each module.

[0146] In an exemplary embodiment, a computer device is provided. The computer device may be a server, and its internal structure diagram may be as shown in FIG. Figure 9 As shown. The computer device includes a processor, a memory, an input / output interface (Input / Output, abbreviated as I / O) and a communication interface. The processor, memory and input / output interface are connected through a system bus, and the communication interface is connected to the system bus through the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and an internal memory. The non-volatile storage medium stores an operating system, a computer program and a database. The internal memory provides an environment for the operation of the operating system and computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and an external device. The communication interface of the computer device is used to communicate with an external terminal through a network connection. When the computer program is executed by the processor, a phase control method of a switch cabinet is implemented.

[0147] Those skilled in the art will understand that Figure 9The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0148] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0149] Receive the original electrical signal sent by the detection antenna array; the detection antenna array is composed of Hall effect sensors. The original electrical signal is obtained by converting the received magnetic field signal by the detection antenna array. The magnetic field signal is generated by the three-phase cable in the switch cabinet;

[0150] Perform frequency domain processing on the original electrical signal to obtain a frequency domain signal;

[0151] According to the frequency domain signal, the phase verification result of the switch cabinet is determined.

[0152] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0153] The number and arrangement of the detection antennas are determined according to the arrangement of the three-phase cables in the switch cabinet and the physical properties of the switch cabinet; and the detection antenna array is determined according to the number and arrangement of the detection antennas.

[0154] In one embodiment, when the processor executes the computer program to perform frequency domain processing on the original electrical signal to obtain a frequency domain signal, the processor further implements the following steps:

[0155] The original electrical signal is filtered and amplified to obtain the target electrical signal; the target electrical signal is subjected to fast Fourier transform to obtain the frequency domain signal.

[0156] In one embodiment, when the processor executes the computer program to filter and amplify the original electrical signal to obtain the target electrical signal, the processor further implements the following steps:

[0157] According to the phase-correction requirements of the switchgear, the active filtering circuit and the amplifying circuit are determined; the active filtering circuit is used to filter the original electrical signal to obtain the filtered original electrical signal; the amplifying circuit is used to amplify the filtered original electrical signal to obtain the target electrical signal.

[0158] In one embodiment, a three-phase cable includes a first-phase cable, a second-phase cable, and a third-phase cable; the frequency domain signal includes a first-phase specific frequency component, a second-phase specific frequency component, and a third-phase specific frequency component; when a processor executes a computer program to determine a phase verification result of a switchgear based on the frequency domain signal of the original electrical signal, the processor further implements the following steps:

[0159] The first-phase phase characteristics are determined based on the first-phase specific frequency component in the frequency domain signal; the second-phase phase characteristics are determined based on the second-phase specific frequency component in the frequency domain signal; the third-phase phase characteristics are determined based on the third-phase specific frequency component in the frequency domain signal; and the phase verification results of the switchgear are determined based on the first-phase phase characteristics, the second-phase phase characteristics, and the third-phase phase characteristics.

[0160] In one embodiment, when the processor executes the computer program to determine the phase verification result of the switchgear according to the first phase characteristic, the second phase characteristic, and the third phase characteristic, the processor further implements the following steps:

[0161] Based on the phase recognition model, the actual phase angle information of the three-phase cable is determined according to the phase characteristics of the first phase, the second phase and the third phase; the phase angle information of the three-phase cable is sent to the phase detection device, so that the phase detection device performs phase verification on the switch cabinet according to the actual phase angle information and the standard power frequency phase angle information collected by the phase detection device; the phase verification result sent by the phase detection device is received, and the arrangement order of the first phase cable, the second phase cable and the third phase cable in the switch cabinet is determined according to the phase verification result.

[0162] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the following steps are implemented:

[0163] Receive the original electrical signal sent by the detection antenna array; the detection antenna array is composed of Hall effect sensors. The original electrical signal is obtained by converting the received magnetic field signal by the detection antenna array. The magnetic field signal is generated by the three-phase cable in the switch cabinet;

[0164] Perform frequency domain processing on the original electrical signal to obtain a frequency domain signal;

[0165] According to the frequency domain signal, the phase verification result of the switch cabinet is determined.

[0166] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0167] The number and arrangement of the detection antennas are determined according to the arrangement of the three-phase cables in the switch cabinet and the physical properties of the switch cabinet; and the detection antenna array is determined according to the number and arrangement of the detection antennas.

[0168] In one embodiment, when the processor executes the computer program to perform frequency domain processing on the original electrical signal to obtain a frequency domain signal, the processor further implements the following steps:

[0169] The original electrical signal is filtered and amplified to obtain the target electrical signal; the target electrical signal is subjected to fast Fourier transform to obtain the frequency domain signal.

[0170] In one embodiment, when the processor executes the computer program to filter and amplify the original electrical signal to obtain the target electrical signal, the processor further implements the following steps:

[0171] According to the phase-correction requirements of the switchgear, the active filtering circuit and the amplifying circuit are determined; the active filtering circuit is used to filter the original electrical signal to obtain the filtered original electrical signal; the amplifying circuit is used to amplify the filtered original electrical signal to obtain the target electrical signal.

[0172] In one embodiment, a three-phase cable includes a first-phase cable, a second-phase cable, and a third-phase cable; the frequency domain signal includes a first-phase specific frequency component, a second-phase specific frequency component, and a third-phase specific frequency component; when a processor executes a computer program to determine a phase verification result of a switchgear based on the frequency domain signal of the original electrical signal, the processor further implements the following steps:

[0173] The first-phase phase characteristics are determined based on the first-phase specific frequency component in the frequency domain signal; the second-phase phase characteristics are determined based on the second-phase specific frequency component in the frequency domain signal; the third-phase phase characteristics are determined based on the third-phase specific frequency component in the frequency domain signal; and the phase verification results of the switchgear are determined based on the first-phase phase characteristics, the second-phase phase characteristics, and the third-phase phase characteristics.

[0174] In one embodiment, when the processor executes the computer program to determine the phase verification result of the switchgear according to the first phase characteristic, the second phase characteristic, and the third phase characteristic, the processor further implements the following steps:

[0175] Based on the phase recognition model, the actual phase angle information of the three-phase cable is determined according to the phase characteristics of the first phase, the second phase and the third phase; the phase angle information of the three-phase cable is sent to the phase detection device, so that the phase detection device performs phase verification on the switch cabinet according to the actual phase angle information and the standard power frequency phase angle information collected by the phase detection device; the phase verification result sent by the phase detection device is received, and the arrangement order of the first phase cable, the second phase cable and the third phase cable in the switch cabinet is determined according to the phase verification result.

[0176] In one embodiment, a computer program product is provided, comprising a computer program, which, when executed by a processor, implements the following steps:

[0177] Receive the original electrical signal sent by the detection antenna array; the detection antenna array is composed of Hall effect sensors. The original electrical signal is obtained by converting the received magnetic field signal by the detection antenna array. The magnetic field signal is generated by the three-phase cable in the switch cabinet;

[0178] Perform frequency domain processing on the original electrical signal to obtain a frequency domain signal;

[0179] According to the frequency domain signal, the phase verification result of the switch cabinet is determined.

[0180] In one embodiment, when the processor executes the computer program, the processor further implements the following steps:

[0181] The number and arrangement of the detection antennas are determined according to the arrangement of the three-phase cables in the switch cabinet and the physical properties of the switch cabinet; and the detection antenna array is determined according to the number and arrangement of the detection antennas.

[0182] In one embodiment, when the processor executes the computer program to perform frequency domain processing on the original electrical signal to obtain a frequency domain signal, the processor further implements the following steps:

[0183] The original electrical signal is filtered and amplified to obtain the target electrical signal; the target electrical signal is subjected to fast Fourier transform to obtain the frequency domain signal.

[0184] In one embodiment, when the processor executes the computer program to filter and amplify the original electrical signal to obtain the target electrical signal, the processor further implements the following steps:

[0185] According to the phase-correction requirements of the switchgear, the active filtering circuit and the amplifying circuit are determined; the active filtering circuit is used to filter the original electrical signal to obtain the filtered original electrical signal; the amplifying circuit is used to amplify the filtered original electrical signal to obtain the target electrical signal.

[0186] In one embodiment, a three-phase cable includes a first-phase cable, a second-phase cable, and a third-phase cable; the frequency domain signal includes a first-phase specific frequency component, a second-phase specific frequency component, and a third-phase specific frequency component; when a processor executes a computer program to determine a phase verification result of a switchgear based on the frequency domain signal of the original electrical signal, the processor further implements the following steps:

[0187] The first-phase phase characteristics are determined based on the first-phase specific frequency component in the frequency domain signal; the second-phase phase characteristics are determined based on the second-phase specific frequency component in the frequency domain signal; the third-phase phase characteristics are determined based on the third-phase specific frequency component in the frequency domain signal; and the phase verification results of the switchgear are determined based on the first-phase phase characteristics, the second-phase phase characteristics, and the third-phase phase characteristics.

[0188] In one embodiment, when the processor executes the computer program to determine the phase verification result of the switchgear according to the first phase characteristic, the second phase characteristic, and the third phase characteristic, the processor further implements the following steps:

[0189] Based on the phase recognition model, the actual phase angle information of the three-phase cable is determined according to the phase characteristics of the first phase, the second phase and the third phase; the phase angle information of the three-phase cable is sent to the phase detection device, so that the phase detection device performs phase verification on the switch cabinet according to the actual phase angle information and the standard power frequency phase angle information collected by the phase detection device; the phase verification result sent by the phase detection device is received, and the arrangement order of the first phase cable, the second phase cable and the third phase cable in the switch cabinet is determined according to the phase verification result.

[0190] It should be noted that the user information (including but not limited to user device information, user personal information, etc.) and data (including but not limited to data used for analysis, stored data, displayed data, etc.) involved in this application are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0191] Those skilled in the art will appreciate that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the above-mentioned embodiments. In particular, any reference to memory, database, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The databases involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, distributed databases based on blockchains. The processors involved in the various embodiments provided herein may be, but are not limited to, general-purpose processors, central processing units (CPUs), graphics processing units (GPUs), digital signal processors (DSPs), programmable logic devices (PLDs), data processing logic devices based on quantum computing, and the like.

[0192] The technical features of the above embodiments can be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0193] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A phase checking method for a switch cabinet, characterized in that: The method comprises: Receive the original electrical signal sent by the detection antenna array; wherein the detection antenna array is composed of Hall effect sensors, and the original electrical signal is obtained by the detection antenna array converting the received magnetic field signal, and the magnetic field signal is generated by the three-phase cable in the switch cabinet; Performing frequency domain processing on the original electrical signal to obtain a frequency domain signal; A phase check result of the switch cabinet is determined according to the frequency domain signal.

2. The method according to claim 1, characterized in that The method further comprises: Determining the number and arrangement of detection antennas according to the arrangement of the three-phase cables in the switch cabinet and the physical properties of the switch cabinet; The detection antenna array is determined according to the number and arrangement of the detection antennas.

3. The method according to claim 1, characterized in that The performing frequency domain processing on the original electrical signal to obtain a frequency domain signal includes: Filtering and amplifying the original electrical signal to obtain a target electrical signal; Performing fast Fourier transform on the target electrical signal to obtain a frequency domain signal.

4. The method according to claim 3, characterized in that The filtering and amplifying the original electrical signal to obtain the target electrical signal includes: Determine the active filter circuit and amplifier circuit according to the phase-correction requirements of the switch cabinet; Using the active filter circuit to filter the original electrical signal to obtain a filtered original electrical signal; The amplifier circuit is used to amplify the original electric signal after filtering to obtain the target electric signal.

5. The method according to claim 1, wherein The three-phase cable includes a first-phase cable, a second-phase cable, and a third-phase cable; the frequency domain signal includes a first-phase specific frequency component, a second-phase specific frequency component, and a third-phase specific frequency component; Determining the phase verification result of the switch cabinet according to the frequency domain signal of the original electrical signal includes: determining a first phase characteristic according to a first phase specific frequency component in the frequency domain signal; determining a second-phase phase characteristic according to a second-phase specific frequency component in the frequency domain signal; determining a third-phase phase characteristic according to a third-phase specific frequency component in the frequency domain signal; A phase checking result of the switch cabinet is determined according to the first phase characteristic, the second phase characteristic, and the third phase characteristic.

6. The method according to claim 5, characterized in that The determining the phase checking result of the switch cabinet according to the first phase characteristic, the second phase characteristic, and the third phase characteristic includes: Determining actual phase angle information of the three-phase cable based on the first phase characteristic, the second phase characteristic, and the third phase characteristic based on a phase recognition model; Sending the phase angle information of the three-phase cable to a phase detection device, so that the phase detection device performs phase checking on the switch cabinet according to the actual phase angle information and the standard power frequency phase angle information collected by the phase detection device; The phase detection result sent by the phase detection device is received, and the arrangement order of the first-phase cable, the second-phase cable, and the third-phase cable in the switch cabinet is determined according to the phase detection result.

7. A phase checking device for a switch cabinet, characterized in that: The device comprises: A signal receiving module, configured to receive an original electrical signal transmitted by a detection antenna array, wherein the detection antenna array is composed of Hall effect sensors, and the original electrical signal is obtained by converting a received magnetic field signal generated by a three-phase cable in the switch cabinet by the detection antenna array; A signal processing module, configured to perform frequency domain processing on the original electrical signal to obtain a frequency domain signal; A phase checking module is used to determine a phase checking result of the switch cabinet according to the frequency domain signal.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer program product comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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