Calibration method of high-voltage electrified display device, electrostatic detection method and related equipment

Abstract

The present application relates to the technical field of smart grid, and especially relates to a high-voltage live display device calibration method, a live detection method and related equipment; the high-voltage live display device calibration method obtains voltage signals of each phase of a target high-voltage electrical device; extracts voltage amplitudes and phases of each voltage signal; determines whether the voltage signals are valid based on the voltage amplitudes, the phases and a preset reference calibration value; if valid, monitors whether each voltage signal satisfies a preset stability determination condition within a preset time length; if satisfied, calculates a live detection calibration value and calibrates based on the calibration value; the live detection method obtains real-time voltage signals of each phase of a target high-voltage electrical device and determines whether voltage amplitudes of each real-time voltage signal are greater than a preset calibration threshold; thereby determining a live state of the target high-voltage electrical device; solves the problem that the prior art cannot effectively perform automatic live detection calibration and automatic live detection of high-voltage electrical devices.

Description

Technical Field

[0001] This invention relates to the field of smart grid technology, and in particular to a calibration method, voltage detection method and related equipment for a high-voltage live display device. Background Technology

[0002] Voltage detection refers to the inspection of high-voltage electrical equipment to determine whether it is energized. This is typically done using a high-voltage liveness detection device. However, the measured signals from these devices can vary significantly due to differences in sensor parameters, installation distance and location, surrounding environment, and the voltage level of the high-voltage equipment. Therefore, on-site calibration is essential to meet industry standards for accuracy.

[0003] Existing manual voltage testing and calibration schemes, as well as methods for detecting the energized state after manual calibration, require operators to return to the site for calibration, resulting in significant waste of manpower and resources, increased equipment debugging costs, and potential operational safety accidents.

[0004] In summary, existing technologies have limitations in effectively performing automated voltage testing and calibration, and in automating voltage testing of high-voltage electrical equipment. Summary of the Invention

[0005] The main objective of this application is to provide a calibration method, a voltage testing method, and related equipment for a high-voltage live display device, in order to solve the problem that existing technologies cannot effectively perform automated calibration and automated voltage testing of high-voltage electrical equipment.

[0006] The first aspect of the present invention provides a calibration method for a high-voltage live display device, the calibration method comprising: acquiring voltage signals of each phase of a target high-voltage electrical equipment; extracting the voltage amplitude and phase of each voltage signal; determining whether the voltage signal is valid based on the voltage amplitude, the phase, and a preset reference calibration value; if valid, monitoring whether each voltage signal meets a preset stability judgment condition within a preset time length; if satisfied, calculating a calibration value for voltage detection based on the voltage amplitude and the phase, and performing calibration based on the calibration value.

[0007] Optionally, in a first implementation of the first aspect of the present invention, the step of determining whether the voltage signal meets the preset automatic calibration conditions based on the voltage amplitude and the phase includes: comparing the voltage amplitude of each phase with a preset reference calibration value to obtain a comparison result; determining whether the voltage amplitude of each phase is balanced to obtain a balance judgment result; determining whether the voltage signal of each phase is generated by interference based on the comparison result, the balance judgment result and the phase of the voltage signal of each phase to obtain an interference judgment result; and determining whether the voltage signal meets the preset automatic calibration conditions based on the comparison result, the balance judgment result and the interference judgment result.

[0008] Optionally, in a second implementation of the first aspect of the present invention, the step of comparing the voltage amplitude of each phase with a preset reference calibration value to obtain a comparison result includes: if the reference calibration value is a preset default calibration value, then comparing the voltage amplitude of each phase with the default calibration value, and determining whether the voltage amplitude of each phase is greater than the default calibration value; if the voltage amplitude of each phase is greater than the default calibration value, then the comparison result is that the voltage amplitude has increased; if the voltage amplitude of each phase is not greater than the default calibration value, then the comparison result is that the voltage amplitude has increased. If the voltage amplitude does not increase, and if the reference calibration value is not the preset default calibration value, then the voltage amplitude of each phase is compared with the product of the preset reference coefficient and the reference calibration value, and it is determined whether the voltage amplitude of each phase is greater than the product of the reference coefficient and the reference calibration value; if the voltage amplitude of each phase is greater than the product of the reference coefficient and the reference calibration value, then the comparison result is that the voltage amplitude increases; if the voltage amplitude of each phase is not greater than the product of the reference coefficient and the reference calibration value, then the comparison result is that the voltage amplitude does not increase.

[0009] Optionally, in a third implementation of the first aspect of the present invention, the step of determining whether the voltage amplitudes of each phase are balanced and obtaining a balance determination result includes: calculating the amplitude difference between the voltage amplitudes of each phase; determining whether each amplitude difference is less than a preset amplitude difference threshold; if it is less than, then determining that the balance determination result is that the voltage amplitudes of each phase are balanced; if it is not less than, then determining that the balance determination result is that the voltage amplitudes of each phase are unbalanced.

[0010] Optionally, in a fourth implementation of the first aspect of the present invention, the step of determining whether the phase voltage signals generated based on the comparison result, the balance judgment result, and the phase judgment of each phase voltage signal are interference signals, and obtaining the interference judgment result, includes: if the comparison result indicates that the voltage amplitude of each phase changes and the balance judgment result indicates balance, determining whether the voltage amplitude of each phase is less than a preset low-voltage threshold; calculating the phase difference between the phases of each voltage signal based on the phase of each voltage signal, and determining whether each phase difference is less than a preset phase difference threshold; if the voltage amplitude of each phase is less than the preset low-voltage threshold and each phase difference is less than the preset phase difference threshold, then determining that the interference judgment result is that the phase voltage signals are interference signals; if the voltage amplitude of each phase is not less than the preset low-voltage threshold or each phase difference is not less than the preset phase difference threshold, then determining that the interference judgment result is that the phase voltage signals are not interference signals.

[0011] Optionally, in a fifth implementation of the first aspect of the present invention, the step of determining whether the voltage signal meets the preset automatic calibration conditions based on the comparison result, the balance judgment result, and the interference judgment result includes: if the comparison result is that the voltage amplitude increases, the balance judgment result is that the voltage amplitudes of each phase are balanced, and the interference judgment result is that the generated phase voltage signals are not interference signals, then it is determined that the voltage signal meets the automatic calibration conditions; if the comparison result is that the voltage amplitude does not increase, the balance judgment result is that the voltage amplitudes of each phase are unbalanced, or the interference judgment result is that the generated phase voltage signals are interference signals, then it is determined that the voltage signal does not meet the automatic calibration conditions.

[0012] Optionally, in a sixth implementation of the first aspect of the present invention, after determining that the voltage signal meets the conditions for automatic calibration, and before calculating the calibration value of the voltage test based on the voltage amplitude and the phase, and performing calibration based on the calibration value, the method further includes: monitoring whether the voltage signal meets preset stability judgment conditions within a preset time length, wherein the stability judgment conditions are that within the time length, the comparison result is that the voltage amplitude increases, the balance judgment result is that the voltage amplitudes of each phase are balanced, and the interference judgment result is that the generated phase voltage signals are not interference signals.

[0013] Optionally, in a seventh implementation of the first aspect of the present invention, before acquiring the voltage signals of each phase of the target high-voltage electrical equipment, the method further includes: acquiring the test voltage signals of each phase of the target high-voltage electrical equipment through a sensor in the high-voltage live display device within a preset test time period, and reading the test reading of the sensor based on the test voltage signals; determining whether the test reading meets a preset sensitivity adjustment condition; if it does, adjusting the sensitivity of the sensor based on the test reading, wherein the sensor is used to acquire the voltage signals of the target high-voltage electrical equipment based on the adjusted sensitivity.

[0014] Optionally, in an eighth implementation of the first aspect of the present invention, the sensitivity includes at least two levels of sensitivity; adjusting the sensitivity of the sensor based on the test reading includes: when the test reading meets a preset sensitivity reduction condition, if the sensitivity is not the lowest level of sensitivity, then adjusting the sensitivity to a lower level of sensitivity; when the test reading meets a preset sensitivity increase condition, if the sensitivity is not the highest level of sensitivity, then adjusting the sensitivity to a higher level of sensitivity.

[0015] A second aspect of the present invention provides a method for detecting voltage in a high-voltage energized display device. The method includes: acquiring real-time voltage signals of a target high-voltage electrical equipment; extracting the voltage amplitude of each real-time voltage signal and determining whether the voltage amplitude of each real-time voltage signal is greater than a preset calibration threshold, wherein the calibration threshold is equal to N times a preset calibration value, where N>0, and the preset calibration value is obtained using the aforementioned calibration method for the high-voltage energized display device; if the voltage amplitude is greater than the preset calibration threshold, the target high-voltage electrical equipment is determined to be energized; if the voltage amplitude is not greater than the preset calibration threshold, the target high-voltage electrical equipment is determined to be de-energized.

[0016] A third aspect of the present invention provides a calibration device, the calibration device comprising: an acquisition module for acquiring phase voltage signals of a target high-voltage electrical equipment; an extraction module for extracting the voltage amplitude and phase of each voltage signal; a judgment module for judging whether the voltage signal meets preset automatic calibration conditions based on the voltage amplitude and the phase; and a calibration module for calculating a calibration value for voltage detection based on the voltage amplitude and the phase when the automatic calibration conditions are met, and performing calibration based on the calibration value.

[0017] Optionally, in a first implementation of the third aspect of the present invention, the judgment module is configured to: compare the voltage amplitude of each phase with a preset reference calibration value to obtain a comparison result; determine whether the voltage amplitude of each phase is balanced to obtain a balance judgment result; determine whether the voltage signal of each phase is an interference signal based on the comparison result, the balance judgment result and the phase of the voltage signal of each phase to obtain an interference judgment result; and determine whether the voltage signal meets the preset automatic calibration conditions based on the comparison result, the balance judgment result and the interference judgment result.

[0018] Optionally, in a second implementation of the third aspect of the present invention, the judging module is further configured to: if the reference calibration value is a preset default calibration value, compare the voltage amplitude of each phase with the default calibration value, and determine whether the voltage amplitude of each phase is greater than the default calibration value; if the voltage amplitude of each phase is greater than the default calibration value, the comparison result is that the voltage amplitude has increased; if the voltage amplitude of each phase is not greater than the default calibration value, the comparison result is that the voltage amplitude has not increased; if the reference calibration value is a preset default calibration value, the comparison result is that the voltage amplitude has not increased. If the calibration value is not the preset default calibration value, the voltage amplitude of each phase is compared with the product of the preset reference coefficient and the reference calibration value, and it is determined whether the voltage amplitude of each phase is greater than the product of the reference coefficient and the reference calibration value. If the voltage amplitude of each phase is greater than the product of the reference coefficient and the reference calibration value, the comparison result is that the voltage amplitude has increased. If the voltage amplitude of each phase is not greater than the product of the reference coefficient and the reference calibration value, the comparison result is that the voltage amplitude has not increased.

[0019] Optionally, in a third implementation of the third aspect of the present invention, the judgment module is further configured to: calculate the amplitude difference between the voltage amplitudes of each phase; determine whether each amplitude difference is less than a preset amplitude difference threshold; if it is less than, determine that the balance judgment result is that the voltage amplitudes of each phase are balanced; if it is not less than, determine that the balance judgment result is that the voltage amplitudes of each phase are unbalanced.

[0020] Optionally, in a fourth implementation of the third aspect of the present invention, the judgment module is further configured to: if the comparison result is that the voltage amplitude of each phase changes and the balance judgment result is balanced, determine whether the voltage amplitude of each phase is less than a preset low voltage threshold; calculate the phase difference between the phases of each voltage signal based on the phase of each voltage signal, and determine whether each phase difference is less than a preset phase difference threshold; if the voltage amplitude of each phase is less than the preset low voltage threshold and each phase difference is less than the preset phase difference threshold, then determine that the interference judgment result is that the voltage signal of each phase is an interference signal; if the voltage amplitude of each phase is not less than the preset low voltage threshold or each phase difference is not less than the preset phase difference threshold, then determine that the interference judgment result is that the voltage signal of each phase is not an interference signal.

[0021] Optionally, in a fifth implementation of the third aspect of the present invention, the judgment module is further configured to: determine that the voltage signal meets the conditions for automatic calibration if the comparison result is that the voltage amplitude increases, the balance judgment result is that the voltage amplitudes of each phase are balanced, and the interference judgment result is that the generated phase voltage signals are not interference signals; and determine that the voltage signal does not meet the conditions for automatic calibration if the comparison result is that the voltage amplitude does not increase, the balance judgment result is that the voltage amplitudes of each phase are unbalanced, or the interference judgment result is that the generated phase voltage signals are interference signals.

[0022] Optionally, in a sixth implementation of the third aspect of the present invention, the device further includes a monitoring module for monitoring whether the voltage signal meets a preset stability judgment condition within a preset time length, wherein the stability judgment condition is that within the time length, the comparison result is that the voltage amplitude increases, the balance judgment result is that the voltage amplitudes of each phase are balanced, and the interference judgment result is that the generated phase voltage signals are not interference signals.

[0023] Optionally, in a seventh implementation of the third aspect of the present invention, the device further includes an adjustment module, configured to acquire test voltage signals of each phase of the target high-voltage electrical equipment through a sensor in the high-voltage live display device within a preset test time period, and read the test reading of the sensor based on the test voltage signals; determine whether the test reading meets a preset sensitivity adjustment condition; if it does, adjust the sensitivity of the sensor based on the test reading, wherein the sensor is used to acquire the voltage signal of the target high-voltage electrical equipment based on the adjusted sensitivity.

[0024] Optionally, in an eighth implementation of the third aspect of the present invention, the adjustment module is further configured to: when the test reading meets a preset sensitivity reduction condition, if the sensitivity is not the lowest level of sensitivity, adjust the sensitivity to a lower level of sensitivity; when the test reading meets a preset sensitivity increase condition, if the sensitivity is not the highest level of sensitivity, adjust the sensitivity to a higher level of sensitivity.

[0025] A fourth aspect of the present invention provides a high-voltage energized display device, comprising a voltage acquisition module for acquiring real-time voltage signals of each phase of a target high-voltage electrical equipment; a calibration judgment module for extracting the voltage amplitude of each real-time voltage signal and determining whether the voltage amplitude of each real-time voltage signal is greater than a preset calibration threshold, wherein the calibration threshold is equal to N times a preset calibration value, N>0, and the preset calibration value is obtained using the aforementioned calibration method for the high-voltage energized display device; and a voltage detection module for determining that the target high-voltage electrical equipment is energized when the voltage amplitude is greater than the calibration threshold, and determining that the target high-voltage electrical equipment is de-energized when the voltage amplitude is not greater than the calibration threshold.

[0026] A fifth aspect of the present invention provides an electronic device, comprising: a memory and at least one processor, wherein the memory stores instructions; the at least one processor invokes the instructions in the memory to cause the electronic device to perform the steps of the above-described calibration method for a high-voltage live display device or the voltage detection method for a high-voltage live display device.

[0027] A sixth aspect of the present invention provides a computer-readable storage medium storing instructions that, when executed on a computer, cause the computer to perform the steps of the above-described calibration method for a high-voltage live display device or the voltage detection method for a high-voltage live display device.

[0028] In the technical solution of this invention, the calibration method of the high-voltage live display device specifically involves acquiring the voltage signals of each phase of the target high-voltage electrical equipment; extracting the voltage amplitude and phase of each voltage signal; determining whether the voltage signal is valid based on the voltage amplitude, the phase, and a preset reference calibration value; if valid, monitoring whether each voltage signal meets a preset stability judgment condition within a preset time period; if satisfied, calculating the calibration value for voltage detection based on the voltage amplitude and the phase, and performing calibration based on the calibration value; the method utilizes the voltage amplitude and phase information collected from the target high-voltage electrical equipment, combined with a preset reference calibration value... A reference calibration value is set, and the voltage amplitude of each phase is compared with the preset reference calibration value. It is determined whether the voltage amplitude increases, whether the voltage amplitudes of each phase are balanced, and whether there is interference signal, thereby determining whether the voltage signal is valid. The validity of the voltage signal indicates whether the target high-voltage electrical equipment is stably energized. Generally, if the target high-voltage electrical equipment has the line's rated voltage, it is stably energized, and voltage testing calibration can be performed based on this stable energized state. The voltage calibration value is calculated based on the voltage amplitude and phase corresponding to the valid voltage signal, and calibration is performed based on this calibration value, thus solving the problem of existing... The technology cannot effectively perform automated voltage detection calibration; this high-voltage live display device's voltage detection method acquires the voltage signals of each phase of the target high-voltage electrical equipment; extracts the voltage amplitude and phase of each voltage signal; determines the validity of the voltage signal based on the voltage amplitude, the phase, and a preset reference calibration value; if valid, monitors whether each voltage signal meets the stability judgment condition within a preset time length; if satisfied, calculates the voltage detection calibration value based on the voltage amplitude and the phase, and performs calibration; acquires the real-time voltage signals of each phase of the target high-voltage electrical equipment; extracts the voltage amplitude and phase of each real-time voltage signal... The voltage amplitude value is determined, and it is judged whether the voltage amplitude of each of the real-time voltage signals is greater than the calibration value. If it is greater, the target high-voltage electrical equipment is determined to be energized; if it is not greater, the target high-voltage electrical equipment is determined to be de-energized. Based on the calibration value of automatic calibration, the energization of the target high-voltage electrical equipment is determined by judging whether the voltage amplitude of each of the real-time voltage signals is greater than the calibration value, thereby solving the problem of the inability to automatically test the voltage of high-voltage electrical equipment in the prior art. In summary, the problem of the inability to effectively perform automatic voltage testing calibration and automatic voltage testing of high-voltage electrical equipment in the prior art is solved. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of an embodiment of the calibration method for a high-voltage live display device according to the present invention;

[0030] Figure 2This is a schematic diagram of another embodiment of the calibration method for the high-voltage live display device in this invention;

[0031] Figure 3 This is a schematic diagram of an embodiment of the voltage detection method of the high-voltage live display device in the present invention;

[0032] Figure 4 This is a schematic diagram of one embodiment of the calibration device in this invention;

[0033] Figure 5 This is a schematic diagram of another embodiment of the calibration device in this invention;

[0034] Figure 6 This is a schematic diagram of one embodiment of the high-voltage live display device according to the present invention;

[0035] Figure 7 This is a schematic diagram of one embodiment of the electronic device in this invention;

[0036] Figure 8 This is a logic diagram for determining the validity of a voltage signal in an embodiment of the present invention;

[0037] Figure 9 This is a logic diagram for determining whether the amplitude of phase A increases in an embodiment of the present invention;

[0038] Figure 10 This is a flowchart of the voltage testing process in an embodiment of the present invention;

[0039] Figure 11 This is a flowchart illustrating the sensitivity adaptation process in an embodiment of the present invention. Detailed Implementation

[0040] To address the problem of ineffective automated voltage detection calibration and automated voltage detection of high-voltage electrical equipment in existing technologies, this application provides a calibration method, voltage detection method, and related equipment for a high-voltage live display device. Specifically, the calibration method for the high-voltage live display device involves acquiring the voltage signals of each phase of the target high-voltage electrical equipment; extracting the voltage amplitude and phase of each voltage signal; determining the validity of the voltage signal based on the voltage amplitude, phase, and a preset reference calibration value; if valid, monitoring whether each voltage signal meets a preset stability judgment condition within a preset time period; if satisfied, calculating the voltage detection calibration value based on the voltage amplitude and phase, and performing calibration based on the calibration value. In this way, by using the voltage amplitude and phase information collected from the target high-voltage electrical equipment, combined with the preset reference calibration value, the voltage signals of each phase of the target high-voltage electrical equipment are calibrated. The voltage amplitude of each phase is compared with a preset reference calibration value to determine if the voltage amplitude has increased, whether the voltage amplitudes of each phase are balanced, and whether the increased voltage amplitude is caused by interference, thereby determining whether the voltage signal is valid. The validity of the voltage signal indicates whether the target high-voltage electrical equipment is stably energized. Generally, if the target high-voltage electrical equipment has the line's rated voltage, it is stably energized, and voltage testing calibration can be performed based on this stable energized state. The calibration value for voltage testing is calculated based on the voltage amplitude corresponding to the valid voltage signal and the phase, and calibration is performed based on this calibration value, thus solving the problems of existing technologies. The problem of ineffective automated voltage detection calibration in China is addressed by the voltage detection method of this high-voltage live display device, which acquires the voltage signals of each phase of the target high-voltage electrical equipment; extracts the voltage amplitude and phase of each voltage signal; determines the validity of the voltage signal based on the voltage amplitude, the phase, and a preset reference calibration value; if valid, monitors whether each voltage signal meets the stability judgment condition within a preset time period; if satisfied, calculates the voltage detection calibration value based on the voltage amplitude and the phase, and performs calibration; acquires the real-time voltage signals of each phase of the target high-voltage electrical equipment; and extracts the voltage amplitude of each real-time voltage signal. The system calculates the voltage amplitude of each real-time voltage signal and determines whether it exceeds a preset calibration threshold. If it does, the target high-voltage electrical equipment is determined to be energized; if it does not, the target high-voltage electrical equipment is determined to be de-energized. Based on the calibration value of the automatic calibration, the system determines whether the target high-voltage electrical equipment is energized by judging whether the voltage amplitude of each real-time voltage signal exceeds the calibration value. This solves the problem of the inability to automatically test high-voltage electrical equipment in the prior art. In summary, this solves the problem of the inability to effectively perform automated voltage testing calibration and automated voltage testing of high-voltage electrical equipment in the prior art.

[0041] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" or "having" and any variations thereof are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0042] For ease of understanding, the specific process of the embodiments of the present invention is described below. Please refer to [link / reference]. Figure 1 An embodiment of the calibration method for the high-voltage live display device in this invention includes the following steps:

[0043] 101. Obtain the voltage signals of each phase of the target high-voltage electrical equipment;

[0044] In this step, the high-voltage electrical equipment includes a three-phase cable, and the voltage signal of each phase includes the voltage signal of each phase of the three-phase cable;

[0045] In this step, each phase includes the phases that make up the three-phase circuit, which are respectively referred to as phase A cable, phase B cable and phase C cable;

[0046] In practical applications, the three-phase circuit has three-phase electricity, and the load connection of the three-phase electricity includes delta connection (represented by the symbol "△") and star connection (also known as Y connection, represented by the symbol "Y").

[0047] In this step, the voltage signal includes a sequence of sampled values ​​obtained by a preset sensor sampling each phase;

[0048] In practical applications, the sensors include inductive sensors and capacitive sensors. The inductive sensors are generally used in outdoor high-voltage live display devices and are positioned at a certain air insulation distance from the cable. The capacitive sensors are generally used in indoor high-voltage live display devices and are directly connected to high-voltage electrical equipment.

[0049] 102. Extract the voltage amplitude and phase of each voltage signal;

[0050] In this step, the phase includes the voltage phase.

[0051] In practical applications, the real and imaginary parts of the three-phase fundamental signal can be obtained by Fourier transform of the sampled sequence. Based on the real and imaginary parts, the corresponding amplitude and phase can be calculated using the corresponding calculation formulas.

[0052] 103. Determine whether the voltage signal meets the preset automatic calibration conditions based on the voltage amplitude and phase;

[0053] In practical applications, judging whether a voltage signal meets the preset automatic calibration conditions based on voltage amplitude and phase is equivalent to judging whether a voltage signal is valid based on voltage amplitude, phase and preset reference calibration values. If the voltage signal is valid, the automatic calibration conditions are met; if the voltage signal is invalid, the automatic calibration conditions are not met.

[0054] Specifically, this can be achieved in the following ways:

[0055] The voltage amplitude of each phase is compared with the preset reference calibration value to obtain the comparison result;

[0056] Determine whether the voltage amplitudes of each phase are balanced;

[0057] Determine whether an increase in voltage amplitude is caused by interference signals based on the phase of each voltage signal;

[0058] If the comparison results show that the voltage amplitude increases, the voltage amplitudes of each phase are balanced, and the increase in voltage amplitude is not caused by interference signals, then the voltage signals of each phase are determined to be valid.

[0059] If the comparison results show that the voltage amplitude does not increase, the voltage amplitudes of each phase are unbalanced, or the increase in voltage amplitude is due to interference signals, then the voltage signals of each phase are determined to be invalid.

[0060] In practical applications, the process of determining the validity of a voltage signal based on voltage amplitude, phase, and a preset reference calibration value includes determining whether three preset conditions are simultaneously met. These three preset conditions include an amplitude change condition, an amplitude balance condition, and a non-interference condition.

[0061] If the voltage amplitude of each phase increases when compared with the preset reference calibration value, then the preset amplitude change condition is met.

[0062] If the voltage amplitudes of each phase are balanced, then the preset amplitude balance condition is satisfied.

[0063] If the increase in voltage amplitude is not due to interference signal, then the preset non-interference condition is met.

[0064] For example, the amplitude change condition, amplitude balance condition, and non-interference condition can have the following priority relationship:

[0065] Determine whether the amplitude change condition is met;

[0066] If the amplitude change condition is not met, the monitoring continues to check whether the amplitude change condition is met. In the case of a preset reference calibration value, calibrating the high-voltage live display device is actually generating a calibration value and updating the reference calibration value. If the amplitude change condition is not met, it means that the reference calibration value can meet the current voltage detection needs and there is no need to update the reference calibration value.

[0067] If the amplitude change condition is met, then it is determined whether the amplitude balance condition is met. For example, the determination result of whether the amplitude balance condition is met can be obtained by determining whether the amplitude difference between the voltage amplitudes of each phase is less than a preset amplitude difference threshold.

[0068] If the amplitude balance condition is not met, the monitoring continues to check whether the amplitude balance condition is met. The amplitude balance condition can be used to indicate the stable state of each phase. When the amplitude balance condition is not met, it indicates that the current state of each phase is not the stable energized state required by the high voltage energized display device.

[0069] If the amplitude balance condition is met, then determine whether the non-interference condition is met. For example, it can be determined by combining the phase difference between the phases of each phase and the voltage range of the voltage amplitude of each phase.

[0070] If the non-interference condition is met, then the voltage signal of each phase is determined to be valid;

[0071] If the non-interference condition is not met, then the voltage signal of each phase is determined to be invalid.

[0072] In practical applications, after determining that the voltage signal meets the conditions for automatic calibration, and before calculating the calibration value for voltage detection based on the voltage amplitude and the phase, and performing calibration based on the calibration value, this step further includes:

[0073] The voltage signal is monitored to see if it meets the preset stability judgment conditions within a preset time period. The stability judgment conditions are that within the time period, the comparison result is that the voltage amplitude increases, the balance judgment result is that the voltage amplitudes of each phase are balanced, and the interference judgment result is that the generated voltage signals of each phase are not interference signals.

[0074] In practical applications, the stability judgment condition can also be set as follows: if the change value of the voltage amplitude of each phase within a preset time length is less than the preset voltage fluctuation threshold, then the stability judgment condition is determined to be met.

[0075] In practical applications, the voltage fluctuation threshold can be calculated in the following way:

[0076] When the voltage signal of each phase is determined to be valid, the voltage amplitude of the voltage signal of each phase at the corresponding moment is extracted and recorded as the instantaneous voltage amplitude.

[0077] The voltage fluctuation threshold is obtained by multiplying the instantaneous voltage amplitude by a preset range ratio. For example, the range ratio can be set to 0.1.

[0078] In this practical application, the stability judgment condition can also be combined with the phase change of each voltage signal for comprehensive judgment. For example, if the change value of the voltage amplitude of each phase within a preset time length is less than the preset voltage fluctuation threshold, and the phase change value of the voltage amplitude of each phase within a preset time length is less than the preset phase fluctuation threshold, then the stability judgment condition is determined to be met.

[0079] 104. If satisfied, calculate the calibration value of the voltage test based on the voltage amplitude and phase, and perform calibration based on the calibration value.

[0080] In this step, the real and imaginary parts of the three-phase fundamental signal can be obtained by Fourier transform of the sampling sequence. Based on the real and imaginary parts, the corresponding amplitude and phase can be calculated using the corresponding calculation formula.

[0081] In practical applications, the calibration value can be set as the voltage amplitude within the time length, or it can be set as the average voltage amplitude within each unit time period.

[0082] In practical applications, the calibration value can also be set as the voltage restoration value within the time length. When the voltage signal is a voltage sampling value sequence within the time length, the number of sampling points within a unit voltage period can be determined by combining the phase, and the voltage within the time length can be restored based on the number of sampling points within each voltage period and combined with a sine function to obtain the voltage restoration value. Specifically, restoring the voltage within the time length by combining a sine function means fitting the voltage based on the number of sampling points and the corresponding sampling values ​​using a sine function.

[0083] In practical applications, the calibration based on the calibration value can be achieved by calibrating a preset voltage testing device using the calibration value. For example, when the voltage testing device is a high-voltage live display device, the calibration value is transmitted to the high-voltage live display device through a pre-configured communication connection and written into a preset memory in the high-voltage live display device. The calibration position in the memory is then marked to complete the calibration operation.

[0084] By implementing the above method, the voltage signals of each phase of the target high-voltage electrical equipment are acquired; the voltage amplitude and phase of each voltage signal are extracted; based on the voltage amplitude and phase, it is determined whether the voltage signal meets the preset automatic calibration conditions; if it does, the calibration value for voltage detection is calculated based on the voltage amplitude and phase, and calibration is performed based on the calibration value; in this way, by combining the voltage amplitude and phase information collected from the target high-voltage electrical equipment with the preset reference calibration value, the voltage amplitude of each phase is compared with the preset reference calibration value, and it is determined that the voltage amplitude has increased, thus determining the voltage amplitude of each phase. The system checks whether the voltage is balanced and determines whether an increase in voltage amplitude is caused by interference, thereby determining whether the voltage signal is valid. The validity of the voltage signal indicates whether the target high-voltage electrical equipment is stably energized. Generally, if the target high-voltage electrical equipment has the line's rated voltage, it is stably energized, and voltage testing and calibration can be performed based on this stable energized state. The calibration value for voltage testing is calculated based on the voltage amplitude and phase corresponding to the valid voltage signal, and calibration is performed based on this calibration value, thus solving the problem of the inability to effectively perform automated voltage testing and calibration in the prior art.

[0085] Please see Figure 2 Another embodiment of the calibration method for the high-voltage live display device in this invention includes the following steps:

[0086] 201. Obtain the voltage signals of each phase of the target high-voltage electrical equipment;

[0087] This step can be implemented in the following way:

[0088] During a preset test period, the test voltage signals of each phase of the target high-voltage electrical equipment are collected by a preset sensor, and the test readings of the sensor based on the test voltage signals are read.

[0089] Obtain the current reading range of the sensor and calculate the reading ratio, wherein the reading ratio is the ratio between the test reading and the current reading range;

[0090] The sensitivity of the sensor is adjusted based on the reading ratio, and the voltage signal of the target high-voltage electrical equipment is acquired by the sensor based on the adjusted sensitivity.

[0091] Specifically, the sensitivity includes at least two levels of sensitivity, wherein the sensitivity is used to indicate the voltage range detected and displayed by the sensor;

[0092] The adjustment of the sensor sensitivity based on the reading ratio includes:

[0093] When the reading ratio is greater than the preset reference ratio range, if the sensitivity is not the lowest level of sensitivity, the sensitivity will be adjusted to a lower level of sensitivity.

[0094] If the sensitivity is not the highest level of sensitivity when the reading ratio is less than the preset reference ratio range, then the sensitivity will be adjusted to a higher level of sensitivity.

[0095] In practical applications, the default sensitivity is set to the highest sensitivity. Here's why: "Assume there are five sensitivity levels, 1-5, with sensitivity 5 being the highest. If the default level is the lowest sensitivity, i.e., level 1, then levels 2, 3, and 4 might all ensure that the sampled value is less than the preset value. According to the previous judgment, level 1 does not meet the requirement, so it will be adjusted to a higher level, i.e., level 2. At this point, the sensitivity of level 2 meets the condition that the sampled value is less than the preset value, and the sensitivity adaptation is complete. However, in reality, the sensitivity of levels 3 and 4 can also meet this condition. Within the measurement range, of course, the higher the sensitivity, the better. However, the sensitivity of level 2 is not the optimal sensitivity. But if the default level is the highest sensitivity, and it is not suitable, the sensitivity can be adjusted down level by level to avoid this problem."

[0096] In practical applications, before acquiring the test voltage signals of each phase of the target high-voltage electrical equipment through a preset sensor, the sensor can be tested for normal operation using a preset sensor detection method.

[0097] If the sensor is normal, then the step of acquiring the test voltage signal of each phase of the target high-voltage electrical equipment through the preset sensor is executed;

[0098] If the sensor is malfunctioning, adjust the sensor to a normal state before proceeding with the step of acquiring the test voltage signals of each phase of the target high-voltage electrical equipment through the preset sensor.

[0099] 202. Extract the voltage amplitude and phase of each voltage signal;

[0100] This step is basically the same as step 102 in the previous embodiment, so it will not be repeated here.

[0101] 203. Determine whether the voltage signal is valid based on the voltage amplitude, phase, and preset reference calibration value;

[0102] This step can be implemented in the following way:

[0103] The voltage amplitude of each phase is compared with a preset reference calibration value to obtain a comparison result; it is determined whether the voltage amplitude of each phase is balanced; based on the phase of each voltage signal, it is determined whether the increase in voltage amplitude is caused by interference signal; if the comparison result is that the voltage amplitude increases, the voltage amplitude of each phase is balanced, and the increase in voltage amplitude is not caused by interference signal, then the voltage signal of each phase is determined to be valid; if the comparison result is that the voltage amplitude does not increase, the voltage amplitude of each phase is unbalanced, or the increase in voltage amplitude is caused by interference signal, then the voltage signal of each phase is determined to be invalid, and the validity of the voltage signal is monitored.

[0104] Furthermore, the comparison of the voltage amplitude of each phase with a preset reference calibration value to obtain the comparison result includes:

[0105] If the reference calibration value is a preset default calibration value, then the voltage amplitude of each phase is compared with the default calibration value, and it is determined whether the voltage amplitude of each phase is greater than the default calibration value.

[0106] If the voltage amplitude of each phase is greater than the default calibration value, the comparison result is that the voltage amplitude has increased.

[0107] If the voltage amplitude of each phase is not greater than the default calibration value, the comparison result is that the voltage amplitude does not increase.

[0108] If the reference calibration value is not the preset default calibration value, then the voltage amplitude of each phase is compared with the product of the preset reference coefficient and the reference calibration value, and it is determined whether the voltage amplitude of each phase is greater than the product of the reference coefficient and the reference calibration value. For example, the reference coefficient can be set to 1.3.

[0109] If the voltage amplitude of each phase is greater than the product of the reference coefficient and the reference calibration value, then the comparison result is that the voltage amplitude increases.

[0110] If the voltage amplitude of each phase is not greater than the product of the reference coefficient and the reference calibration value, then the comparison result is that the voltage amplitude does not increase.

[0111] Furthermore, determining whether the voltage amplitudes of each phase are balanced includes:

[0112] Calculate the voltage amplitude difference between each phase;

[0113] Determine whether the amplitude difference is less than a preset amplitude difference threshold;

[0114] If it is less than, then the voltage amplitude of each phase is balanced;

[0115] If it is not less than, then the voltage amplitude of each phase is unbalanced.

[0116] Furthermore, the step of determining whether an increase in voltage amplitude is caused by interference based on the phase of each voltage signal includes:

[0117] Determine whether the voltage amplitude of each phase is less than the preset low voltage threshold;

[0118] Calculate the phase difference between the phases of each voltage signal and determine whether each phase difference is less than a preset phase difference threshold. For example, the phase can be represented by each phase angle, and the phase difference can be represented by the phase angle difference.

[0119] If the voltage amplitude of each phase is less than the preset low voltage threshold and the phase difference of each phase is less than the preset phase difference threshold, then the increased voltage amplitude is determined to be an interference signal.

[0120] If the voltage amplitude of each phase is not all less than the preset low voltage threshold or the phase difference is not all less than the preset phase difference threshold, then it is determined that the increase in voltage amplitude is not an interference signal. For example, the phase difference threshold can be configured as follows: if the difference between the maximum and minimum phase angles of each voltage signal is less than 10 degrees, then the phase difference is less than the preset phase difference threshold.

[0121] Specifically, the phase angle difference can be obtained in the following way:

[0122] The voltage signals of each phase are mapped onto a preset coordinate system to obtain the voltage waveform. The coordinate system has time as the horizontal axis and voltage as the vertical axis. For example, the voltage sampling value sequence of each phase is represented by points on the coordinate system to obtain the voltage waveform.

[0123] Based on the trigonometric functions, the phase angle of the voltage signal corresponding to each phase is calculated based on the voltage waveform, and the phase angle difference is calculated based on each phase angle.

[0124] In practical applications, regarding power line interference, if the three-phase phase difference is less than 10 degrees, the corresponding voltage signal is considered to be a pure interference signal and cannot be used for calibration.

[0125] In practical applications, the voltage signal includes phase A, phase B, and phase C. The determination of the voltage signal's validity based on its amplitude, phase, and a preset reference calibration value specifically includes:

[0126] The amplitude difference is calculated based on the A-phase signal, the B-phase signal, and the C-phase signal, and it is determined whether the amplitude difference is less than a preset amplitude difference threshold. The amplitude difference threshold can be 0.3 times the average voltage amplitude of the A-phase signal, the B-phase signal, and the C-phase signal.

[0127] Determine whether the voltage amplitudes corresponding to the A-phase signal, the B-phase signal, and the C-phase signal are greater than a preset reference calibration value;

[0128] If the A-phase signal, the B-phase signal, and the C-phase signal are all greater than the preset reference calibration value, then the voltage amplitude and phase corresponding to the A-phase signal, the B-phase signal, and the C-phase signal are extracted from the voltage signal, and it is determined whether the voltage amplitude is less than the preset low voltage threshold.

[0129] Determine whether the phase meets a preset phase difference condition, wherein the phase difference condition can be set to the phase angle difference between the phase of the A phase signal, the phase of the B phase signal and the phase of the C phase signal being less than 10.92 degrees;

[0130] If the voltage amplitude is not less than the preset low voltage threshold or the phase does not meet the preset phase difference condition, then the voltage signal is determined to be valid.

[0131] In practical applications, before determining whether the voltage signal is valid based on voltage amplitude, phase, and a preset reference calibration value, a preset sensor detection method can be used to detect whether the sensor is functioning properly.

[0132] If the sensor is normal, then the step of determining whether the voltage signal is valid based on the voltage amplitude, phase and preset reference calibration value is executed;

[0133] If the sensor is malfunctioning, adjust the sensor to a normal state before performing the step of determining whether the voltage signal is valid based on the voltage amplitude, phase, and preset reference calibration value.

[0134] In practical applications, determining that the sensor is functioning correctly when detecting interference signals does not guarantee that the sensor will still be functioning correctly during calibration. Therefore, it is necessary to check the sensor's functionality again. In other words, the device continuously checks the sensor's functionality; it is a prerequisite for all the functions described. If the sensor malfunctions at any time, the device loses all of the described functions.

[0135] 204. If effective, monitor whether each voltage signal meets the preset stability judgment condition within the preset time length.

[0136] In this step, the stability judgment condition can be set as follows: if the change value of the voltage amplitude of each phase within a preset time length is less than the preset voltage fluctuation threshold, then the stability judgment condition is determined to be met.

[0137] In practical applications, the monitoring of each voltage signal can be carried out according to a preset monitoring period. If each voltage signal does not meet the preset stability judgment condition within the monitoring period, the time length is recalculated.

[0138] In a power grid system, three-phase balance primarily refers to the equality of the magnitudes of the voltage phasors of the three phases, and that if arranged in the order of A, B, and C, the angles formed between each pair of phasors are all 2n / 3. Three-phase imbalance, on the other hand, refers to the inconsistency in both the magnitudes and angles of the phasors. The standard "Permissible Unbalance of Three-Phase Voltage in Power Quality" (GB / T15543-1995) applies to AC rated frequencies of 50 Hz. Under normal operating conditions of the power system, voltage imbalance at the PCC (Point of Common Coupling) connection point is caused by negative sequence components. This standard stipulates that the permissible unbalance under normal operating conditions at the PCC connection point is 2%, and it must not exceed 4% for short periods.

[0139] In practical applications, such as Figure 8 As shown, the conditions for a voltage signal to be valid include: the three-phase sensor is normal, sensitivity adaptation is completed, the amplitude of phase A increases, the amplitude of phase B increases, the amplitude of phase C increases, the three-phase amplitudes are balanced, and it is a non-pure interference signal. The time length can be set to 2 hours, and the stability judgment condition can be set to all conditions for the voltage signal to be valid within 2 hours.

[0140] Specifically, the three-phase amplitude balance means that the difference between the three-phase amplitudes is not large, that is, the difference between the maximum and minimum values ​​is less than the threshold.

[0141] Specifically, the process for determining the non-pure interference signal condition includes:

[0142] The amplitudes of the three-phase voltages A, B, and C are collected. When the three-phase amplitudes are balanced, the phase angles of the three phases A, B, and C are calculated. If the difference between the maximum and minimum values ​​is not less than a preset value θ, it is determined that it is not a pure interference signal.

[0143] Specifically, such as Figure 9 As shown, taking the condition of increased amplitude in phase A as an example, the reference coefficient for judging the increase in amplitude can be set to 1.3, and the judgment process includes:

[0144] During the initial calibration, the condition is whether the calibration value is the default value;

[0145] If so, and the amplitude of phase A is greater than the default calibration value, then it is determined that the amplitude of phase A has increased;

[0146] If not (meaning at least one calibration has been performed), and the amplitude of phase A is greater than 1.3 times the previous calibration value, then it is determined that the amplitude of phase A has increased.

[0147] Specifically, the sensitivity adaptation process is as follows: Figure 11 As shown, the adaptation process includes:

[0148] Determine if there is a pure interference signal. If not, read the current sensitivity and read the three-phase sample values.

[0149] If the three-phase signal is fully deflected, it means the sensitivity is high. At this time, switch to a lower sensitivity level and continue to judge the deflection of the three-phase signal. If the three-phase signal is slightly deflected, it means the sensitivity is low. At this time, switch to a higher sensitivity level and continue to judge the deflection of the three-phase signal. When the deflection is within a certain range, the current sensitivity is considered appropriate, and the sensitivity setting is adjusted.

[0150] 205. If satisfied, calculate the calibration value of the voltage test based on the voltage amplitude and phase, and perform calibration based on the calibration value.

[0151] This step can be implemented in the following way:

[0152] The average voltage value within the time length is calculated based on the voltage amplitude and phase to obtain the calibration value of the voltage test. For example, the voltage amplitude and phase are substituted into a sine function representing the voltage change with time to obtain the instantaneous voltage value within the time length, and the average voltage value is calculated based on each instantaneous voltage value.

[0153] The calibration value is transmitted to the high-voltage live display device via a pre-configured communication connection, written into a preset memory in the high-voltage live display device, and the calibration position in the memory is marked to complete the calibration operation. The high-voltage live display device includes a high-voltage live display device.

[0154] In practical applications, if the calibration value is greater than the preset maximum calibration value in the high-voltage live display device, then calibration is performed according to the maximum calibration value. For example, when close to full deflection, the maximum calibration value is 2200 volts.

[0155] In practical applications, after obtaining the calibration value using the aforementioned method, it is used to determine whether the current device is energized. Here, "energized" does not simply mean the device has electricity. In actual judgment, the amplitude is compared with the obtained calibration value; if the amplitude exceeds the calibration value by a certain percentage, it is considered energized.

[0156] In practical applications, due to the voltage differences between the three phases, the calibration value of each phase may be different. That is to say, each phase has at least one calibration value. Although the calibration method mentioned above states that the three phases are balanced, three-phase balance does not mean that the three phases are equal. The difference between the three phases is only within a preset range.

[0157] In fact, each phase has a default calibration value. During calibration, each phase obtains its calibration value by combining its own sampled value with the calibration conditions.

[0158] In practical applications, there are at least three calibration values, each corresponding to one of the three phases. It should be noted that different manufacturers may define the calibration values ​​differently. For example, the calibration value mentioned here can be multiplied by a certain percentage (e.g., 50%) and directly compared with the amplitude calculated by sampling. In some cases, each phase may have two calibration values: one for determining whether the phase is energized (e.g., 60%) and one for determining whether the phase is de-energized (e.g., 40%).

[0159] In practical applications, if the calibration conditions are not met and calibration cannot be completed using the aforementioned method, it is also necessary to determine whether there is power or not. In this case, the determination of whether there is power or not is based on the default calibration value, and the result may be inaccurate, meaning that it may not meet the judgment requirements in the DLT538 standard.

[0160] By implementing the above method, the voltage signals of each phase of the target high-voltage electrical equipment are acquired; the voltage amplitude and phase of each voltage signal are extracted; based on the voltage amplitude and phase, it is determined whether the voltage signal meets the preset automatic calibration conditions; if it does, the calibration value for voltage detection is calculated based on the voltage amplitude and phase, and calibration is performed based on the calibration value; in this way, by combining the voltage amplitude and phase information collected from the target high-voltage electrical equipment with the preset reference calibration value, the voltage amplitude of each phase is compared with the preset reference calibration value, and it is determined that the voltage amplitude has increased, thus determining the voltage amplitude of each phase. The system checks whether the voltage is balanced and determines whether an increase in voltage amplitude is caused by interference, thereby determining whether the voltage signal is valid. The validity of the voltage signal indicates whether the target high-voltage electrical equipment is stably energized. Generally, if the target high-voltage electrical equipment has the line's rated voltage, it is stably energized, and voltage testing and calibration can be performed based on this stable energized state. The calibration value for voltage testing is calculated based on the voltage amplitude and phase corresponding to the valid voltage signal, and calibration is performed based on this calibration value, thus solving the problem of the inability to effectively perform automated voltage testing and calibration in the prior art.

[0161] Please see Figure 3 An embodiment of the voltage detection method of the high-voltage live display device in this invention includes the following steps:

[0162] 301. Obtain the real-time voltage signal of the target high-voltage electrical equipment;

[0163] In practical applications, if a high-voltage live display device controls an inductive voltage sensor to convert the magnetic field generated by the high voltage of a live line into electrical energy, and then amplifies this electrical energy based on an amplification factor to detect whether the equipment is live, this step can be achieved in the following way:

[0164] Based on the calibration value, the corresponding amplification factor is determined in the preset amplification factor correspondence table in the high-voltage live display device;

[0165] The real-time voltage signal is amplified based on the amplification factor. For example, the collected real-time voltage sample value is multiplied by the amplification factor to obtain the real-time voltage signal.

[0166] In practical applications, before obtaining the real-time voltage signals of each phase of the target high-voltage electrical equipment, it is possible to first determine whether the actual line is energized. This determination can be made by using a circuit breaker or other equipment, and there are no restrictions on this.

[0167] 302. Extract the voltage amplitude of each real-time voltage signal and determine whether the voltage amplitude of each real-time voltage signal is greater than the preset calibration threshold.

[0168] Wherein, the calibration threshold is equal to N times the preset calibration value, where N>0, and the calibration value is obtained using the aforementioned calibration method for the high-voltage live display device;

[0169] In practical applications, if a high-voltage live display device controls an inductive voltage sensor to convert the magnetic field generated by the high voltage of a live line into electrical energy, and this electrical energy is amplified based on an amplification factor to detect whether the equipment is live, then before determining whether the voltage amplitude of each real-time voltage signal is greater than the calibrated value, the following steps are also included:

[0170] Based on the calibration value, the corresponding amplification factor is determined in the preset amplification factor correspondence table in the high-voltage live display device;

[0171] The voltage amplitude of each real-time voltage signal is amplified based on the amplification factor.

[0172] In practical applications, the real-time voltage signals can also be acquired through sampling circuits. The actual voltage testing procedure is as follows: Figure 10 As shown.

[0173] In practical applications, the calibration value is obtained using the calibration method of a high-voltage live display device, which can be achieved in the following ways:

[0174] S1: Acquire the voltage signals of each phase of the target high-voltage electrical equipment;

[0175] In this step, each phase includes a three-phase cable, referred to as phase A cable, phase B cable, and phase C cable;

[0176] The voltage signals of each phase include phase A signal, phase B signal and phase C signal. For example, the phase A signal can be obtained based on the voltage sampling value sequence collected by the sensor from the phase A cable.

[0177] This step can be implemented in the following way:

[0178] The corresponding A-phase signal, B-phase signal, and C-phase signal are collected by sensors configured on the A-phase cable, B-phase cable, and C-phase cable. The sensors include inductive sensors and capacitive sensors. The inductive sensors are generally used in outdoor high-voltage live display devices and are configured at a certain air insulation distance from the cable. The capacitive sensors are generally used in indoor high-voltage live display devices and are directly connected to high-voltage electrical equipment.

[0179] S2: Extract the voltage amplitude and phase of each voltage signal;

[0180] In this step, the phase includes the phase angle;

[0181] In this step, each voltage signal includes a sequence of voltage sample values ​​for each phase;

[0182] This step can be implemented in the following way:

[0183] Extract the voltage amplitude of phase A, phase B, and phase C from the phase A, phase B, and phase C signals;

[0184] The phase angle corresponding to each voltage signal is calculated based on the voltage sample value sequence.

[0185] S3: Determine whether the voltage signal is valid based on the voltage amplitude, phase, and preset reference calibration value;

[0186] This step can be implemented in the following way:

[0187] The amplitude difference is calculated based on the A-phase signal, the B-phase signal, and the C-phase signal, and it is determined whether the amplitude difference is less than a preset amplitude difference threshold. The amplitude difference threshold can be 0.3 times the average voltage amplitude of the A-phase signal, the B-phase signal, and the C-phase signal.

[0188] Determine whether the voltage amplitudes corresponding to the A-phase signal, the B-phase signal, and the C-phase signal are greater than a preset reference calibration value;

[0189] If the A-phase signal, the B-phase signal, and the C-phase signal are all greater than a preset reference calibration value, then the voltage amplitude and phase corresponding to the A-phase signal, the B-phase signal, and the C-phase signal are extracted from the voltage signal, and it is determined whether the voltage amplitude is less than a preset low voltage threshold. For example, the low voltage threshold can be set to 1500 volts.

[0190] Determine whether the phase meets a preset phase difference condition, wherein the phase difference condition can be set to the phase angle difference between the phase of the A phase signal, the phase of the B phase signal and the phase of the C phase signal being less than 10.92 degrees;

[0191] If the voltage amplitude is not less than the preset low voltage threshold or the phase does not meet the preset phase difference condition, then the voltage signal is determined to be valid.

[0192] S4: If effective, monitor whether each voltage signal meets the preset stability judgment condition within the preset time length.

[0193] In this step, the stability judgment condition can be set as follows: if the change value of the voltage amplitude of each phase within a preset time length is less than the preset voltage fluctuation threshold, then the stability judgment condition is determined to be met.

[0194] S5: If satisfied, calculate the calibration value of the voltage test based on the voltage amplitude and phase, and perform calibration based on the calibration value;

[0195] This step can be implemented in the following way:

[0196] The average voltage value within the time length is calculated based on the voltage amplitude and phase to obtain the calibration value of the voltage test. For example, the voltage amplitude and phase are substituted into a sine function representing the voltage change with time to obtain the instantaneous voltage value within the time length, and the average voltage value is calculated based on each instantaneous voltage value.

[0197] The calibration value is transmitted to the high-voltage live display device via a pre-configured communication connection, written into a preset memory in the high-voltage live display device, and the calibration position in the memory is marked to complete the calibration operation. The high-voltage live display device includes a high-voltage live display device.

[0198] In practical applications, the calibration value can also be directly determined by the voltage amplitude.

[0199] In practical applications, high-voltage live-line indicator devices are used to display the energized status of high-voltage electrical equipment. Existing high-voltage live-line indicator devices sample high-voltage sensor signals, process them internally, control indicator lights to show the energized status of the line, and control relay outputs to lock out node states. Due to the different voltage levels of high-voltage electrical equipment or the different parameters of sensors, high-voltage live-line indicator devices need to be calibrated under the rated voltage of the line.

[0200] The detection of high-voltage live display devices often uses an inductive voltage sensor to convert the magnetic field generated by the high voltage of the live line into electrical energy, and then amplifies this electrical energy based on the amplification factor to detect whether the device is live. In order to ensure the accuracy of the measurement, the amplification factor needs to be calibrated periodically. Specifically, by determining the calibration value of the high-voltage live display device, the potentiometer resistance value is adjusted according to the correspondence between the preset potentiometer resistance value, the calibration value and the amplification factor in the high-voltage live display device, thereby achieving calibration.

[0201] Acquire the real-time voltage signals of each phase of the target high-voltage electrical equipment;

[0202] Extract the voltage amplitude of each real-time voltage signal and determine whether the voltage amplitude of each real-time voltage signal is greater than the preset calibration value, wherein the calibration value is obtained using the calibration method of the aforementioned high-voltage live display device;

[0203] If the value is greater than the value, then the target high-voltage electrical equipment is determined to be energized.

[0204] If the value is not greater than the value, then the target high-voltage electrical equipment is determined to be de-energized.

[0205] 303. If the value is greater than 303, then the target high-voltage electrical equipment is determined to be energized.

[0206] In practical applications, this step also includes internal processing through the high-voltage live display device, controlling the indicator light to show that the line is energized, and controlling the relay output to lock the node.

[0207] 304. If it is not greater than, then the target high-voltage electrical equipment is determined to be de-energized.

[0208] In practical applications, this step also includes internal processing by the high-voltage live display device to control the indicator light to show that the line is de-energized. The calibration threshold is actually obtained by multiplying a preset calibration value by a coefficient, and there can be several possible scenarios:

[0209] The first method uses the sampling amplitude obtained at 100% high voltage as the calibration value. When determining whether the high voltage is energized, the current sampled voltage amplitude is compared with a certain percentage of the calibration value, such as 50%. A hysteresis interval can also be set, such as above 55% for energized and below 45% for unenergized, which can prevent the judgment result from fluctuating at critical states.

[0210] The second method uses a certain percentage of the sampled amplitude obtained at 100% high voltage as a calibration value, such as 50%. When determining whether the high voltage is energized, the currently sampled voltage amplitude is directly compared with this calibration value. Of course, similar to the first method, to eliminate fluctuations in the judgment result at critical states, a hysteresis interval can be set during the judgment process. For example, a calibration value above 100% indicates energization, and below 90% indicates no energization.

[0211] The third type allows each phase to be set with two calibration values: an upper limit calibration value and a lower limit calibration value. A certain hysteresis range is given between the two calibration values. When the current sampled voltage amplitude is higher than the upper limit value, it is judged as energized; when it is lower than the lower limit value, it is judged as de-energized.

[0212] By implementing the above method, the voltage signals of each phase of the target high-voltage electrical equipment are acquired; the voltage amplitude and phase of each voltage signal are extracted; the validity of the voltage signal is determined based on the voltage amplitude, the phase, and a preset reference calibration value; if valid, the stability judgment condition is monitored within a preset time period for each voltage signal; if satisfied, the calibration value for voltage detection is calculated based on the voltage amplitude and the phase, and calibration is performed; real-time voltage signals of each phase of the target high-voltage electrical equipment are acquired; the voltage amplitude of each real-time voltage signal is extracted, and it is determined whether the voltage amplitude of each real-time voltage signal is greater than the calibration value; if greater, the energized state of the target high-voltage electrical equipment is determined to be energized; if not greater, the energized state of the target high-voltage electrical equipment is determined to be de-energized. Based on the automatically calibrated calibration value, the energization of the target high-voltage electrical equipment is determined by judging whether the voltage amplitude of each real-time voltage signal is greater than the calibration value, thereby solving the problem of the inability to automatically detect voltage in high-voltage electrical equipment in the prior art.

[0213] Please refer to Figure 4 One embodiment of the calibration device in this invention includes:

[0214] The acquisition module 401 is used to acquire the voltage signals of each phase of the target high-voltage electrical equipment;

[0215] Extraction module 402 is used to extract the voltage amplitude and phase of each voltage signal;

[0216] The judgment module 403 is used to determine whether the voltage signal meets the preset automatic calibration conditions based on the voltage amplitude and the phase.

[0217] The calibration module 404 is used to calculate the calibration value of the voltage test based on the voltage amplitude and the phase when the automatic calibration conditions are met, and to perform calibration based on the calibration value.

[0218] By implementing the above-mentioned device, the voltage signals of each phase of the target high-voltage electrical equipment are acquired; the voltage amplitude and phase of each voltage signal are extracted; the validity of the voltage signal is determined based on the voltage amplitude, the phase, and a preset reference calibration value; if valid, the voltage signal is monitored to see if it meets a preset stability judgment condition within a preset time period; if satisfied, a voltage detection calibration value is calculated based on the voltage amplitude and the phase, and calibration is performed based on the calibration value; thus, by combining the voltage amplitude and phase information acquired from the target high-voltage electrical equipment with the preset reference calibration value, the voltage amplitude of each phase is compared with the preset reference calibration value. The calibration values ​​are compared to determine if the voltage amplitude has increased, whether the voltage amplitudes of each phase are balanced, and whether the increased voltage amplitude is caused by interference signals, thereby determining whether the voltage signal is valid. The validity of the voltage signal indicates whether the target high-voltage electrical equipment is stably energized. Generally, if the target high-voltage electrical equipment has the line's rated voltage, it is stably energized, and voltage testing calibration can be performed based on this stable energized state. The calibration value for voltage testing is calculated based on the voltage amplitude and phase corresponding to the valid voltage signal, and calibration is performed based on this calibration value, thus solving the problem of ineffective automated voltage testing calibration in the prior art.

[0219] Please see Figure 5 Another embodiment of the calibration device in this invention includes:

[0220] The acquisition module 401 is used to acquire the voltage signals of each phase of the target high-voltage electrical equipment;

[0221] Extraction module 402 is used to extract the voltage amplitude and phase of each voltage signal;

[0222] The judgment module 403 is used to determine whether the voltage signal meets the preset automatic calibration conditions based on the voltage amplitude and the phase.

[0223] The calibration module 404 is used to calculate the calibration value of the voltage test based on the voltage amplitude and the phase when the automatic calibration conditions are met, and to perform calibration based on the calibration value;

[0224] The monitoring module 405 is used to monitor whether the voltage signal meets the preset stability judgment conditions within a preset time length. The stability judgment conditions are that within the time length, the comparison result is that the voltage amplitude increases, the balance judgment result is that the voltage amplitudes of each phase are balanced, and the interference judgment result is that the generated voltage signals of each phase are not interference signals.

[0225] The adjustment module 406 is used to collect the test voltage signals of each phase of the target high-voltage electrical equipment through the sensor in the high-voltage live display device within a preset test time period, and read the test reading of the sensor based on the test voltage signals; determine whether the test reading meets the preset sensitivity adjustment conditions; if it does, adjust the sensitivity of the sensor based on the test reading, wherein the sensor is used to collect the voltage signal of the target high-voltage electrical equipment based on the adjusted sensitivity.

[0226] By implementing the above-mentioned device, the voltage signals of each phase of the target high-voltage electrical equipment are acquired; the voltage amplitude and phase of each voltage signal are extracted; the validity of the voltage signal is determined based on the voltage amplitude, the phase, and a preset reference calibration value; if valid, the voltage signal is monitored to see if it meets a preset stability judgment condition within a preset time period; if satisfied, a voltage detection calibration value is calculated based on the voltage amplitude and the phase, and calibration is performed based on the calibration value; thus, by combining the voltage amplitude and phase information acquired from the target high-voltage electrical equipment with the preset reference calibration value, the voltage amplitude of each phase is compared with the preset reference calibration value. The calibration values ​​are compared to determine if the voltage amplitude has increased, whether the voltage amplitudes of each phase are balanced, and whether the increased voltage amplitude is caused by interference signals, thereby determining whether the voltage signal is valid. The validity of the voltage signal indicates whether the target high-voltage electrical equipment is stably energized. Generally, if the target high-voltage electrical equipment has the line's rated voltage, it is stably energized, and voltage testing calibration can be performed based on this stable energized state. The calibration value for voltage testing is calculated based on the voltage amplitude and phase corresponding to the valid voltage signal, and calibration is performed based on this calibration value, thus solving the problem of ineffective automated voltage testing calibration in the prior art.

[0227] Please see Figure 6 One embodiment of the high-voltage live display device in this invention includes:

[0228] The voltage acquisition module 501 is used to acquire the real-time voltage signals of each phase of the target high-voltage electrical equipment;

[0229] The calibration judgment module 502 is used to extract the voltage amplitude of each of the real-time voltage signals and determine whether the voltage amplitude of each of the real-time voltage signals is greater than a preset calibration threshold, wherein the calibration threshold is equal to N times the preset calibration value, N>0, and the preset calibration value is obtained using the aforementioned calibration method of the high-voltage live display device.

[0230] The voltage detection module 503 is used to determine that the target high-voltage electrical equipment is energized when the voltage is greater than the calibrated threshold; and to determine that the target high-voltage electrical equipment is de-energized when the voltage is not greater than the calibrated threshold.

[0231] By implementing the above-mentioned device, the voltage signals of each phase of the target high-voltage electrical equipment are acquired; the voltage amplitude and phase of each voltage signal are extracted; the validity of the voltage signal is determined based on the voltage amplitude, the phase, and a preset reference calibration value; if valid, the stability judgment condition is monitored within a preset time period for each voltage signal; if satisfied, the calibration value for voltage detection is calculated based on the voltage amplitude and the phase, and calibration is performed; real-time voltage signals of each phase of the target high-voltage electrical equipment are acquired; the voltage amplitude of each real-time voltage signal is extracted, and it is determined whether the voltage amplitude of each real-time voltage signal is greater than the calibration value; if greater, the energized state of the target high-voltage electrical equipment is determined to be energized; if not greater, the energized state of the target high-voltage electrical equipment is determined to be de-energized. Based on the automatically calibrated calibration value, the energization of the target high-voltage electrical equipment is determined by judging whether the voltage amplitude of each real-time voltage signal is greater than the calibration value, thereby solving the problem of the inability to automatically detect voltage in high-voltage electrical equipment in the prior art.

[0232] Please see Figure 7 The following is a detailed description of one embodiment of the electronic device in this invention from the perspective of hardware processing.

[0233] Figure 7 This is a schematic diagram of the structure of an electronic device 600 provided in an embodiment of the present invention. The electronic device 600 can vary significantly due to differences in configuration or performance, and may include one or more central processing units (CPUs) 610 (e.g., one or more processors) and a memory 620, and one or more storage media 630 (e.g., one or more mass storage devices) for storing application programs 633 or data 632. The memory 620 and storage media 630 can be temporary or persistent storage. The program stored in the storage media 630 may include one or more modules (not shown in the diagram), each module including a series of instruction operations on the electronic device 600. Furthermore, the processor 610 may be configured to communicate with the storage media 630 and execute the series of instruction operations in the storage media 630 on the electronic device 600.

[0234] Electronic device 600 may also include one or more power supplies 640, one or more wired or wireless network interfaces 650, one or more input / output interfaces 660, and / or one or more operating systems 631, such as Windows Server, Mac OS X, Unix, Linux, FreeBSD, etc. Those skilled in the art will understand that... Figure 7 The illustrated electronic device structure does not constitute a limitation on the electronic device provided in this application. It may include more or fewer components than illustrated, or combine certain components, or have different component arrangements.

[0235] The present invention also provides a computer-readable storage medium, which can be a non-volatile computer-readable storage medium or a volatile computer-readable storage medium. The computer-readable storage medium stores instructions that, when executed on a computer, cause the computer to perform the steps of the above-described calibration method or voltage detection method for the high-voltage live display device.

[0236] In practical applications, the methods described above can be implemented based on artificial intelligence (AI) technology. AI is the theory, methods, technology, and application system that uses digital computers or machines controlled by digital computers to simulate, extend, and expand human intelligence, perceive the environment, acquire knowledge, and use that knowledge to obtain optimal results. Specifically, it can be executed on a server. The server can be a standalone server or a cloud server that provides basic cloud computing services such as cloud services, cloud databases, cloud computing, cloud functions, cloud storage, network services, cloud communication, middleware services, domain name services, security services, content delivery networks (CDNs), and big data and AI platforms.

[0237] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working process of the above-described apparatus and unit can be referred to the corresponding process in the foregoing method embodiments, and will not be repeated here.

[0238] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause an electronic device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0239] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A calibration method for a high-voltage live display device, characterized in that, The calibration method for the high-voltage live display device includes: Acquire the voltage signals of each phase of the target high-voltage electrical equipment; Extract the voltage amplitude and phase of each voltage signal; Based on the voltage amplitude and the phase, it is determined whether the voltage signal meets the preset automatic calibration conditions, wherein the preset automatic calibration conditions include amplitude change conditions, amplitude balance conditions, and non-interference conditions; determining whether the preset automatic calibration conditions are met includes: based on the voltage amplitude of each phase, the preset reference calibration value, and the phase, determining whether the voltage signal simultaneously meets the amplitude change conditions, the amplitude balance conditions, and the non-interference conditions; If the conditions are met, the calibration value of the voltage test is calculated based on the voltage amplitude and the phase, and calibration is performed based on the calibration value.

2. The calibration method for the high-voltage live display device according to claim 1, characterized in that, The step of determining whether the voltage signal meets the preset automatic calibration conditions based on the voltage amplitude and the phase includes: The voltage amplitude of each phase is compared with the preset reference calibration value to obtain the comparison result; Determine whether the voltage amplitudes of each phase are balanced, and obtain the balance determination result; Based on the comparison results, the balance judgment results, and the phase of each phase voltage signal, it is determined whether each phase voltage signal is an interference signal, and an interference judgment result is obtained. Based on the comparison results, the balance judgment results, and the interference judgment results, it is determined whether the voltage signal meets the preset automatic calibration conditions.

3. The calibration method for the high-voltage live display device according to claim 2, characterized in that, The comparison of the voltage amplitude of each phase with a preset reference calibration value to obtain the comparison result includes: If the reference calibration value is a preset default calibration value, then the voltage amplitude of each phase is compared with the default calibration value, and it is determined whether the voltage amplitude of each phase is greater than the default calibration value. If the voltage amplitude of each phase is greater than the default calibration value, the comparison result is that the voltage amplitude has increased. If the voltage amplitude of each phase is not greater than the default calibration value, the comparison result is that the voltage amplitude does not increase. If the reference calibration value is not the preset default calibration value, then the voltage amplitude of each phase is compared with the product of the preset reference coefficient and the reference calibration value, and it is determined whether the voltage amplitude of each phase is greater than the product of the reference coefficient and the reference calibration value. If the voltage amplitude of each phase is greater than the product of the reference coefficient and the reference calibration value, then the comparison result is that the voltage amplitude increases. If the voltage amplitude of each phase is not greater than the product of the reference coefficient and the reference calibration value, then the comparison result is that the voltage amplitude does not increase.

4. The calibration method for the high-voltage live display device according to claim 2, characterized in that, The process of determining whether the voltage amplitudes of each phase are balanced, and obtaining a balance determination result, includes: Calculate the voltage amplitude difference between each phase; Determine whether the difference between each amplitude is less than the preset amplitude difference threshold; If it is less than, then the balance judgment result is determined to be that the voltage amplitude of each phase is balanced; If it is not less than, then the balance judgment result is determined to be that the voltage amplitude of each phase is unbalanced.

5. The calibration method for the high-voltage live display device according to claim 2, characterized in that, The process of determining whether each phase voltage signal generated based on the comparison result, the balance judgment result, and the phase judgment of each phase voltage signal is an interference signal, and obtaining the interference judgment result, includes: If the comparison result shows that the voltage amplitude of each phase changes and the balance judgment result is balanced, then it is determined whether the voltage amplitude of each phase is less than the preset low voltage threshold. Calculate the phase difference between the phases of each voltage signal based on the phase of each voltage signal, and determine whether each phase difference is less than a preset phase difference threshold. If the voltage amplitude of each phase is less than the preset low voltage threshold and the phase difference of each phase is less than the preset phase difference threshold, then the interference judgment result is determined to be that the voltage signal of each phase is an interference signal. If the voltage amplitude of each phase is not all less than the preset low voltage threshold or the phase difference is not all less than the preset phase difference threshold, then the interference judgment result is determined to be that the voltage signal of each phase is not an interference signal.

6. The calibration method for the high-voltage live display device according to claim 2, characterized in that, The step of determining whether the voltage signal meets the preset automatic calibration conditions based on the comparison result, the balance judgment result, and the interference judgment result includes: If the comparison result is that the voltage amplitude increases, the balance judgment result is that the voltage amplitudes of each phase are balanced, and the interference judgment result is that the generated voltage signals of each phase are not interference signals, then it is determined that the voltage signal meets the conditions for automatic calibration. If the comparison result is that the voltage amplitude does not increase, the balance judgment result is that the voltage amplitudes of each phase are unbalanced, or the interference judgment result is that the generated voltage signals of each phase are interference signals, then it is determined that the voltage signal does not meet the conditions for automatic calibration.

7. The calibration method for the high-voltage live display device according to claim 6, characterized in that, After determining that the voltage signal meets the conditions for automatic calibration, and before calculating the calibration value for voltage detection based on the voltage amplitude and the phase, and performing calibration based on the calibration value, the method further includes: The voltage signal is monitored to see if it meets the preset stability judgment conditions within a preset time period. The stability judgment conditions are that within the time period, the comparison result is that the voltage amplitude increases, the balance judgment result is that the voltage amplitudes of each phase are balanced, and the interference judgment result is that the generated voltage signals of each phase are not interference signals.

8. The calibration method for the high-voltage live display device according to any one of claims 1-6, characterized in that, Before acquiring the voltage signals of each phase of the target high-voltage electrical equipment, the method further includes: During the preset test period, the test voltage signals of each phase of the target high-voltage electrical equipment are collected by the sensors in the high-voltage live display device, and the test readings of the sensors based on the test voltage signals are read. Determine whether the test readings meet the preset sensitivity adjustment conditions; If the conditions are met, the sensitivity of the sensor is adjusted based on the test reading, wherein the sensor is used to acquire the voltage signal of the target high-voltage electrical equipment based on the adjusted sensitivity.

9. The calibration method for the high-voltage live display device according to claim 8, characterized in that, The sensitivity includes at least two levels of sensitivity; The adjustment of the sensor's sensitivity based on the test readings includes: When the test reading meets the preset sensitivity reduction condition, if the sensitivity is not the lowest level of sensitivity, then the sensitivity is adjusted to a lower level of sensitivity. If the sensitivity is not the highest level when the test reading meets the preset sensitivity improvement condition, then the sensitivity will be adjusted to a higher level.

10. A method for detecting voltage using a high-voltage live display device, characterized in that, The voltage testing method includes: Acquire the real-time voltage signal of the target high-voltage electrical equipment; Extract the voltage amplitude of each of the real-time voltage signals and determine whether the voltage amplitude of each of the real-time voltage signals is greater than a preset calibration threshold, wherein the calibration threshold is equal to N times the preset calibration value, N>0, and the preset calibration value is obtained using the calibration method of the high-voltage live display device according to any one of claims 1-9. If the value is greater than the value, then the target high-voltage electrical equipment is determined to be energized. If the value is not greater than the value, then the target high-voltage electrical equipment is determined to be de-energized.

11. A calibration device, characterized in that, The calibration device includes: The acquisition module is used to acquire the phase voltage signals of the target high-voltage electrical equipment; An extraction module is used to extract the voltage amplitude and phase of each voltage signal; The judgment module is used to determine whether the voltage signal meets preset automatic calibration conditions based on the voltage amplitude and the phase, wherein the preset automatic calibration conditions include amplitude change conditions, amplitude balance conditions, and non-interference conditions; determining whether the preset automatic calibration conditions are met includes: determining whether the voltage signal simultaneously meets the amplitude change conditions, the amplitude balance conditions, and the non-interference conditions based on the voltage amplitude of each phase, the preset reference calibration value, and the phase; The calibration module is used to calculate the calibration value of the voltage test based on the voltage amplitude and the phase when the automatic calibration conditions are met, and to perform calibration based on the calibration value.

12. A high-voltage live display device, characterized in that, The high-voltage live display device includes: The voltage acquisition module is used to acquire the real-time voltage signals of each phase of the target high-voltage electrical equipment. The calibration judgment module is used to extract the voltage amplitude of each of the real-time voltage signals and determine whether the voltage amplitude of each of the real-time voltage signals is greater than a preset calibration threshold, wherein the calibration threshold is equal to N times the preset calibration value, N>0, and the preset calibration value is obtained by the calibration method of the high-voltage live display device according to any one of claims 1-9. The voltage detection module is used to determine that the target high-voltage electrical equipment is energized when the voltage is greater than the calibrated threshold, and to determine that the target high-voltage electrical equipment is de-energized when the voltage is not greater than the calibrated threshold.

13. An electronic device, characterized in that, include: A memory and at least one processor, wherein the memory stores instructions and the memory and the at least one processor are interconnected via a circuit; The at least one processor invokes the instructions in the memory to cause the electronic device to perform the steps of the calibration method for the high-voltage live display device as claimed in any one of claims 1-9; Alternatively, the at least one processor may invoke the instructions in the memory to cause the electronic device to perform the steps of the voltage detection method of the high-voltage live display device as claimed in claim 10.

14. A computer-readable storage medium storing a computer program thereon, characterized in that, When the computer program is executed by the processor, it implements each step of the calibration method for the high-voltage live display device as described in any one of claims 1-9; Alternatively, when the computer program is executed by a processor, it implements the various steps of the voltage detection method for the high-voltage live display device as described in claim 10.

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