High-voltage cross-linked cable production quality inspection method

Abstract

This application is applicable to the technical field of cable production quality inspection, and particularly relates to a method for inspecting the production quality of high-voltage cross-linked cables. The method includes: obtaining the detection voltage and detection time; obtaining the standard pulse diagram; obtaining the pressurization rate; analyzing based on the pressurization rate, detection time, detection voltage, and standard pulse diagram to obtain the optimal detection voltage; analyzing based on the detection time, optimal detection voltage, and standard pulse diagram to obtain the optimal detection time; the control device controls the detection device to adjust the detection voltage to the optimal detection voltage and adjust the detection time to the optimal detection time. The method for inspecting the production quality of high-voltage cross-linked cables provided by this application can adjust the detection voltage and detection time to specifically inspect the quality of the cable, thereby improving the accuracy of the inspection results for cable quality inspection.

Description

Technical Field

[0001] This application belongs to the technical field of cable production quality inspection, and particularly relates to a method for inspecting the production quality of high-voltage cross-linked cables. Background Art

[0002] The production of high-voltage cross-linked cables usually involves multi-strand stranding of conductor materials to form a conductor layer, then extrusion of cross-linked polyethylene materials on the conductor layer to form an insulating layer, then braiding of metal tapes or wires on the insulating layer to form a metal shielding layer, and finally extrusion of composite materials such as polyvinyl chloride (PVC) or polyethylene (PE) on the metal shielding layer to form a protective sheath.

[0003] In related technologies, for the same type of cable, due to problems with cable production equipment or cable manufacturing materials, the optimal detection conditions for the same type of cable may change. When the optimal detection conditions change, during the electrical performance test of high-voltage cross-linked cables, if the set detection voltage is greater than the optimal detection voltage, it may cause unnecessary damage to the cable, and when the set detection voltage is less than the optimal detection voltage, it may not be possible to effectively detect all the discharge phenomena of the cable, thus unable to accurately detect the potential quality defects of the cable. Also, if the set detection time is greater than the optimal detection time, it may cause the cable temperature to rise under high-load conditions, resulting in a decrease in the cable's insulation, and when the set detection time is less than the optimal detection time, it may not be possible to generate a stable electric field distribution in the cable, thus unable to detect the potential quality defects of the cable. In summary, when inspecting the quality of the same type of cable, using the same detection conditions for quality inspection will ultimately lead to inaccurate cable quality inspection results or damage to the cable. Summary of the Invention

[0004] The embodiments of this application provide a method for inspecting the production quality of high-voltage cross-linked cables, which can improve the problem that when using the same detection conditions for cable quality inspection, it will ultimately lead to inaccurate cable quality inspection results or damage to the cable.

[0005] In a first aspect, the embodiments of this application provide a method for inspecting the production quality of high-voltage cross-linked cables, including:

[0006] Obtaining a detection voltage and a detection time; wherein, the detection voltage is used to reflect the initially set detection voltage of the cable, and the detection time is used to reflect the initially set time for detecting the cable under the detection voltage;

[0007] Obtaining a standard pulse diagram; wherein, the standard pulse diagram is used to reflect the image of the pulse wave generated by the standard cable when the standard cable is detected under the detection voltage and the detection time;

[0008] Obtain the pressurization rate; wherein the pressurization rate is used to reflect the increasing speed of the voltage when pressurizing the cable.

[0009] Analyze according to the pressurization rate, the detection time, the detection voltage and the standard pulse diagram to obtain the optimal detection voltage; wherein the optimal detection voltage is used to reflect the voltage for detecting the cable after adjustment.

[0010] Analyze according to the detection time, the optimal detection voltage and the standard pulse diagram to obtain the optimal detection time; wherein the optimal detection time is used to reflect the time for detecting the cable under the condition of the optimal detection voltage.

[0011] The control device controls the detection device to adjust the detection voltage to the optimal detection voltage and adjust the detection time to the optimal detection time.

[0012] In the technical solution described above in the embodiment of the present application, at least the following technical effects are achieved:

[0013] The method for detecting the production quality of high-voltage cross-linked cables provided in the embodiment of the present application first obtains the detection voltage for reflecting the initially set detection voltage of the cable and the detection time for reflecting the initially set time for detecting the cable under the detection voltage, then obtains the standard pulse diagram for reflecting the image of the pulse wave generated under the detection voltage and the detection time, then obtains the pressurization rate for reflecting the increasing speed of the voltage when pressurizing the cable, and then analyzes according to the pressurization rate, the detection time, the detection voltage and the standard pulse diagram to obtain the optimal detection voltage for reflecting the voltage for detecting the cable after adjustment, and then analyzes according to the detection time, the optimal detection voltage and the standard pulse diagram to obtain the optimal detection time for reflecting the time for detecting the cable under the condition of the optimal detection voltage, and finally the control device controls the detection device to adjust the detection voltage to the optimal detection voltage and adjust the detection time to the optimal detection time.

[0014] This method can effectively obtain the optimal detection voltage and the optimal detection time that may be different from the initially set detection voltage and detection current of the same type of cable in actual production based on the differences between multiple pulse diagrams obtained during the slow pressurization process of the cable and the standard pulse diagram generated under the initial detection voltage and detection time. By adjusting the detection voltage and detection time, the quality of the cable can be detected specifically, thereby improving the accuracy of the detection result of the cable quality detection.

[0015] In a possible implementation manner of the first aspect, the analyzing according to the pressurization rate, the detection time, the detection voltage and the standard pulse diagram to obtain the optimal detection voltage includes:

[0016] Taking the pressurization rate, the detection time, and the detection voltage as detection conditions, perform a slow pressurization test on the cable and obtain a pulse atlas; wherein, the pulse atlas is used to reflect a set of multiple pulse diagrams of the cable within the detection voltage;

[0017] Analyze according to the pressurization rate, the pulse atlas, and the standard pulse diagram to obtain the optimal detection voltage.

[0018] In a possible implementation manner of the first aspect, the analyzing according to the pressurization rate, the pulse atlas, and the standard pulse diagram to obtain the optimal detection voltage includes:

[0019] Process the pulse atlas to obtain an actual pulse diagram; wherein, the actual pulse diagram is used to reflect the actual image of the pulse wave generated under the detection voltage and the detection time;

[0020] Analyze according to the actual pulse diagram and the standard pulse diagram to obtain a phase angle difference; wherein, the phase angle difference is used to reflect the difference in the angular positions between the first pulse in the pulse diagram and the first pulse in the standard pulse diagram;

[0021] Analyze according to the pressurization rate, the phase angle difference, the pulse atlas, and the standard pulse diagram to obtain the optimal detection voltage.

[0022] In a possible implementation manner of the first aspect, the analyzing according to the actual pulse diagram and the standard pulse diagram to obtain the phase angle difference includes:

[0023] Analyze the actual pulse diagram to obtain a first phase angle; wherein, the first phase angle is used to reflect the position of the first pulse in the actual pulse diagram within the actual pulse diagram;

[0024] Analyze the standard pulse diagram to obtain a second phase angle; wherein, the second phase angle is used to reflect the position of the first pulse in the standard pulse diagram within the standard pulse diagram;

[0025] Compare the first phase angle with the second phase angle to obtain a phase angle difference; wherein, the phase angle difference is used to reflect the difference between the first phase angle and the second phase angle.

[0026] In a possible implementation manner of the first aspect, the analyzing according to the pressurization rate, the phase angle difference, the pulse atlas, and the standard pulse diagram to obtain the optimal detection voltage includes:

[0027] When the phase angle difference is equal to 0, confirm the detection voltage as the optimal detection voltage;

[0028] And / or, analyzing according to the pressurization rate, the phase angle difference, the pulse map set and the standard pulse map to obtain the optimal detection voltage, further comprising:

[0029] When the phase angle difference is less than 0, analyzing the pulse map set to obtain a plurality of first sharpness levels, and analyzing the standard pulse map to obtain a second sharpness level; wherein, the first sharpness level is used to reflect the resolution of a plurality of pulse maps within the detection voltage in the pulse map set, and the second sharpness level is used to reflect the resolution of the standard pulse map;

[0030] Analyzing according to the second sharpness level and the plurality of first sharpness levels to obtain a matching time; wherein, the matching time is used to reflect the time when the plurality of first sharpness levels are the same as the second sharpness level;

[0031] Analyzing according to the matching time and the pressurization rate to obtain the optimal detection voltage.

[0032] In a possible implementation manner of the first aspect, analyzing according to the pressurization rate, the phase angle difference, the pulse map set and the standard pulse map to obtain the optimal detection voltage, further comprising:

[0033] When the phase angle difference is greater than 0, analyzing the pulse map set and the standard pulse map to obtain a plurality of noise ratios and a plurality of pulse width ratios; wherein, the noise ratio is used to reflect the ratio of the noise power of the pulse maps in the pulse map set to the noise power of the standard pulse map, and the pulse width ratio is used to reflect the ratio of the pulse duration width of the pulse maps in the pulse map set to the pulse duration width of the standard pulse map;

[0034] Analyzing according to the pressurization rate to obtain a plurality of pressurization voltages; wherein, the pressurization voltage is used to reflect the magnitude of the voltage value during the slow pressurization process;

[0035] Analyzing according to the plurality of noise ratios and the plurality of pressurization voltages to obtain a first analysis curve; wherein, the first analysis curve is used to reflect the curve of the noise ratio changing with the pressurization voltage;

[0036] Analyzing according to the plurality of pulse width ratios and the plurality of pressurization voltages to obtain a second analysis curve; wherein, the second analysis curve is used to reflect the curve of the pulse width ratio changing with the pressurization voltage;

[0037] Analyzing according to the first analysis curve and the second analysis curve to obtain the optimal detection voltage.

[0038] In a possible implementation of the first aspect, analyzing according to the first analysis curve and the second analysis curve to obtain the optimal detection voltage includes:

[0039] Analyze the first analysis curve and the second analysis curve to obtain a third analysis curve; wherein, the third analysis curve is used to reflect the relationship curve between the noise ratio and the pulse width ratio;

[0040] Analyze according to the third analysis curve to obtain a normalization point; wherein, the normalization point is used to reflect the data point in the third analysis curve where the pulse width ratio is 1 and the noise ratio is the smallest;

[0041] Analyze according to the normalization point and the second analysis curve to obtain the optimal detection voltage.

[0042] In a possible implementation of the first aspect, analyzing according to the detection time, the optimal detection voltage and the standard pulse diagram to obtain the optimal detection time includes:

[0043] The control device controls the detection device to detect the cable based on the optimal detection voltage and the detection time, and obtains the optimal pulse diagram; wherein, the optimal pulse diagram is used to reflect the image of the pulse wave generated by the cable when detecting the cable under the optimal detection voltage and the detection time;

[0044] Analyze according to the optimal pulse diagram and the standard pulse diagram to obtain a time ratio; wherein the time ratio is used to reflect the ratio between the time for the discharge amount of the cable to climb under the optimal detection voltage and the time for the discharge amount of the cable to climb under the detection voltage;

[0045] Analyze according to the time ratio and the detection time to obtain the optimal detection time.

[0046] In a possible implementation of the first aspect, analyzing according to the optimal pulse diagram and the standard pulse diagram to obtain a time ratio includes:

[0047] Analyze the optimal pulse diagram to obtain a first climbing time; wherein, the first climbing time is used to reflect the time occupied by the discharge increment in the optimal pulse diagram;

[0048] Analyze the standard pulse diagram to obtain a second climbing time; wherein, the second climbing time is used to reflect the time occupied by the discharge increment in the standard pulse diagram;

[0049] Compare the first climbing time with the second climbing time to obtain a time ratio; wherein, the time ratio is used to reflect the ratio between the first climbing time and the second climbing time.

[0050] In a possible implementation of the first aspect, the analysis of the optimal pulse diagram to obtain the first rise time includes:

[0051] Analyze the optimal pulse diagram to obtain a first discharge quantity change; wherein, the first discharge quantity change is used to reflect the change in the discharge increment of the cable under the optimal detection voltage;

[0052] Analyze the first discharge quantity change and the optimal pulse diagram to obtain the first rise time; wherein, the first rise time is used to reflect the time taken for the first discharge quantity change to become 0 in the optimal pulse diagram.

[0053] And / or, the analysis of the standard pulse diagram to obtain the second rise time includes:

[0054] Analyze the standard pulse diagram to obtain a second discharge quantity change; wherein, the second discharge quantity change is used to reflect the change in the discharge increment of the cable theoretically under the detection voltage;

[0055] Analyze the second discharge quantity change and the standard pulse diagram to obtain the second rise time; wherein, the second rise time is used to reflect the time taken for the second discharge quantity change to become 0 in the standard pulse diagram.

[0056] In a second aspect, an embodiment of the present application provides a high-voltage cross-linked cable production quality detection system, including:

[0057] A first acquisition module, configured to acquire a detection voltage and a detection time; wherein, the detection voltage is used to reflect the initially set detection voltage of the cable, and the detection time is used to reflect the initially set time for detecting the cable under the detection voltage.

[0058] A second acquisition module, configured to acquire a standard pulse diagram; wherein, the standard pulse diagram is used to reflect the image of the pulse wave generated by the standard cable when detecting the standard cable under the detection voltage and the detection time.

[0059] A third acquisition module, configured to acquire a pressurization rate; wherein the pressurization rate is used to reflect the increasing speed of the voltage when pressurizing the cable.

[0060] A first analysis module, configured to analyze according to the pressurization rate, the detection time, the detection voltage, and the standard pulse diagram to obtain an optimal detection voltage; wherein, the optimal detection voltage is used to reflect the voltage for detecting the cable after adjustment.

[0061] A second analysis module, configured to analyze according to the detection time, the optimal detection voltage and the standard pulse diagram to obtain the optimal detection time; wherein, the optimal detection time is used to reflect the time for detecting the cable under the condition of the optimal detection voltage.

[0062] A control module, configured to control the device to control the detection device to adjust the detection voltage to the optimal detection voltage and adjust the detection time to the optimal detection time.

[0063] In a third aspect, an embodiment of the present application provides a high-voltage cross-linked cable production quality detection device, including a detection device and a control device. The detection device is electrically connected to the control device. The control device includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the computer program is executed by the processor, it implements the method according to any one of the above first aspects.

[0064] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, it implements the method according to any one of the above first aspects.

[0065] In a fifth aspect, an embodiment of the present application provides a computer program, and when the computer program runs on a high-voltage cross-linked cable production quality detection device, it causes the high-voltage cross-linked cable production quality detection device to execute the high-voltage cross-linked cable production quality detection method according to any one of the above first aspects.

[0066] It can be understood that the beneficial effects of the above second to fifth aspects can refer to the relevant descriptions in the above first aspect, and will not be elaborated here. Description of the Drawings

[0067] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the following drawings are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0068] Figure 1 It is a schematic flowchart of a high-voltage cross-linked cable production quality detection method provided by an embodiment of the present application;

[0069] Figure 2 It is a schematic implementation flowchart of a high-voltage cross-linked cable production quality detection method provided by an embodiment of the present application;

[0070] Figure 3 It is a schematic structural diagram of a high-voltage cross-linked cable production quality detection system provided by an embodiment of the present application;

[0071] Figure 4 It is a schematic structural diagram of a control device of a high-voltage cross-linked cable production quality detection device provided by an embodiment of the present application. Detailed implementation manners

[0072] In the following description, specific details such as specific system structures and technologies are presented for the purpose of illustration rather than limitation, so as to thoroughly understand the embodiments of the present application. However, those skilled in the art should clearly understand that the present application can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details from interfering with the description of the present application.

[0073] It should be understood that when used in the specification and appended claims of the present application, the term "comprising" indicates the presence of the described features, wholes, steps, operations, elements, and / or components, but does not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components, and / or their combinations.

[0074] It should also be understood that the term "and / or" as used in the specification and appended claims of the present application refers to any combination and all possible combinations of one or more of the associated listed items, and includes these combinations.

[0075] As used in the specification and appended claims of the present application, the term "if" can be interpreted as "when", "once", "in response to determining", or "in response to detecting" according to the context. Similarly, the phrase "if determined" or "if [the described condition or event] is detected" can be interpreted as meaning "once determined", "in response to determining", "once [the described condition or event] is detected", or "in response to detecting [the described condition or event]" according to the context.

[0076] In addition, in the description of the specification and appended claims of the present application, the terms "first", "second", "third", etc. are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0077] References to "one embodiment" or "some embodiments" etc. described in the specification of this application mean that a particular feature, structure, or characteristic described in connection with that embodiment is included in one or more embodiments of this application. Thus, statements such as "in one embodiment", "in some embodiments", "in other some embodiments", "in still other embodiments", etc. that appear in different places in this specification do not necessarily all refer to the same embodiment, but mean "one or more but not all embodiments", unless otherwise specifically emphasized. The terms "comprising", "including", "having" and their variants all mean "including but not limited to", unless otherwise specifically emphasized.

[0078] In the related art, for the same type of cable, due to problems with cable production equipment or cable manufacturing materials, the optimal detection conditions for the same type of cable may change. When the optimal detection conditions change, when performing electrical performance tests on high-voltage cross-linked cables, if the set detection voltage is greater than the optimal detection voltage, it may cause unnecessary damage to the cable, and when the set detection voltage is less than the optimal detection voltage, it may not be possible to effectively detect all the discharge phenomena of the cable, thus unable to accurately detect the potential quality defects of the cable. Also, if the set detection time is greater than the optimal detection time, it may cause the temperature of the cable to rise under high-load conditions, resulting in a decrease in the insulation of the cable, and when the set detection time is less than the optimal detection time, it may not be possible to generate a stable electric field distribution in the cable, thus unable to detect the potential quality defects of the cable. In summary, when performing quality inspections on the same type of cable, using the same detection conditions for quality inspection of the cable will ultimately lead to inaccurate quality inspection results of the cable or damage to the cable.

[0079] To solve the above problems, an embodiment of this application provides a method for detecting the production quality of high-voltage cross-linked cables. In this method, first, obtain the detection voltage for reflecting the initially set detection voltage of the cable and the detection time for reflecting the initially set time for detecting the cable at the detection voltage. Then, obtain the standard pulse diagram for reflecting the image of the pulse wave generated at the detection voltage and detection time. Next, obtain the pressurization rate for reflecting the rate of increase in voltage when pressurizing the cable. Then, analyze based on the pressurization rate, detection time, detection voltage, and standard pulse diagram to obtain the optimal detection voltage for reflecting the voltage for detecting the cable after adjustment. Then, analyze based on the detection time, optimal detection voltage, and standard pulse diagram to obtain the optimal detection time for reflecting the time for detecting the cable under the condition of the optimal detection voltage. Finally, control the detection device through the control device to adjust the detection voltage to the optimal detection voltage and adjust the detection time to the optimal detection time.

[0080] The high-voltage cross-linked cable production quality detection method provided by the embodiments of the present application can be applied to high-voltage cross-linked cable production quality detection equipment. At this time, the high-voltage cross-linked cable production quality detection equipment is the execution subject of the high-voltage cross-linked cable production quality detection method provided by the embodiments of the present application. The embodiments of the present application do not impose any restrictions on the specific type of the terminal device.

[0081] The high-voltage cross-linked cable quality detection equipment includes a detection device and a control device, and the detection device is electrically connected to the control device. The detection device is used for detecting the quality of the high-voltage cross-linked cable. The detection device includes an oscilloscope, a voltage application device, and a timing device. The oscilloscope is used to obtain the pulse diagram during the detection of the high-voltage cross-linked cable. For example, the oscilloscope can be a digital storage oscilloscope, a pulse generator, a partial discharge detector, etc. The voltage application device is used to apply a detection voltage to the high-voltage cross-linked cable. The voltage application device can be an AC power supply or a programmable power supply, etc. The timing device is used to record the detection time of the high-voltage cross-linked cable. The timing device can be an electronic timer, a digital timer, a mechanical clock, etc. The control device is used to supervise and control the detection process of the high-voltage cross-linked cable.

[0082] For example, the control device can be a mobile phone, a tablet computer, a notebook computer, an ultra-mobile personal computer (UMPC), a netbook, a smart large screen, a smart TV, a handheld device with wireless communication function, a desktop computer, a handheld device with wireless communication function, a computer, a laptop computer, a handheld computing device, etc.

[0083] To better understand the high-voltage cross-linked cable production quality detection method provided by the embodiments of the present application, the following provides an exemplary introduction to the specific implementation process of the high-voltage cross-linked cable production quality detection method provided by the embodiments of the present application.

[0084] Figure 1 and Figure 2 shows a schematic flowchart of the high-voltage cross-linked cable production quality detection method provided by the embodiments of the present application. Please refer to Figure 1 and Figure 2 , the high-voltage cross-linked cable production quality detection method includes:

[0085] S100, obtaining a detection voltage and a detection time; wherein, the detection voltage is used to reflect the initially set detection voltage of the cable, and the detection time is used to reflect the initially set time for detecting the cable under the detection voltage.

[0086] It can be understood that the detection voltage refers to the voltage initially set to be most suitable for quality detection of standard cables. The detection time refers to the detection time initially set to be most suitable for the detection voltage. A standard cable refers to a cable produced when the material structure, production method, cable production equipment, etc. are all in line with the production expectations during the production process. Since the usage scenarios of cables are different and the electrical performance requirements for cables are also different, different cable models correspond to different detection conditions. During the quality detection of cables, it is usually necessary to detect the cables under the preset detection conditions, and the detection conditions include the detection voltage and the detection time. Exemplarily, the detection voltage and the detection time can be obtained through manual input by humans. The detection voltage and the detection time can also be directly obtained from the detection database. The detection database refers to a database that contains different models of cables and their corresponding detection voltages and detection times. These data can be obtained through means such as laboratory experiments, on-site measurements and monitoring, and past experience. After obtaining the data, the collected data is sorted, classified, and archived, useful information and rules are extracted, and then the relevant data is saved into the database to form the detection database.

[0087] S200, obtain the standard pulse diagram; wherein, the standard pulse diagram is used to reflect the image of the pulse wave generated by the standard cable when the standard cable is detected under the detection voltage and the detection time.

[0088] Exemplarily, the pulse signal of the standard cable under the detection voltage and the detection time can be simulated by simulation software (such as MATLAB, Simulink), and the pulse signal can be subjected to signal imaging processing through a plotting function (such as plot) to generate the standard pulse diagram. Signal imaging processing refers to the process of converting the pulse signal into an image or graphical representation. The process of signal imaging processing can be steps such as signal acquisition, feature extraction, and image generation.

[0089] S300, obtain the pressurization rate; wherein the pressurization rate is used to reflect the increasing speed of the voltage when pressurizing the cable.

[0090] It can be understood that during the detection of the cable, it is necessary to pressurize the cable at the pressurization rate to avoid damaging the cable during the detection process due to the too-fast increasing speed of the voltage. Exemplarily, the pressurization rate can be obtained through manual input by humans, and the pressurization rate can also be directly obtained from the voltage rate library. The voltage rate library refers to a database that contains the pressurization rate. These data can be obtained through means such as laboratory experiments, on-site measurements and monitoring, and past experience. After obtaining the data, the collected data is sorted, classified, and archived, useful information and rules are extracted, and then the relevant data is saved into the database to form the voltage rate library.

[0091] The S400 analyzes based on the pressurization rate, detection time, detection voltage and standard pulse diagram to obtain the optimal detection voltage; wherein, the optimal detection voltage is used to reflect the voltage for detecting the cable after adjustment.

[0092] It can be understood that in the actual cable manufacturing process, due to problems with cable production equipment or cable manufacturing materials, the optimal detection conditions for the same type of cable may change. The optimal detection voltage refers to the voltage that is most suitable for detecting the current cable after adjustment. The optimal detection conditions refer to the detection conditions that can best reflect the discharge phenomenon of the cable when detecting the production quality of the current cable.

[0093] Exemplarily, the cable can be processed under the pressurization rate, detection voltage and detection time to obtain a set of multiple pulse diagrams of the cable within the detection voltage, and then analyze the set of multiple pulse diagrams of the cable within the detection voltage with the pressurization rate and the standard pulse diagram to finally obtain the optimal detection voltage.

[0094] The optimal detection voltage can also be obtained through a detection model, that is, input the pressurization rate, detection time, detection voltage and standard pulse diagram into the detection model, and the detection model then outputs the corresponding optimal detection voltage. The training process of the detection model can use the data obtained by processing the pressurization rate, detection time, detection voltage, standard pulse diagram and the corresponding optimal detection voltage as the training data set of the detection model, and then input the training data set of the detection model into the detection model for training and learning to finally obtain the detection model.

[0095] In a possible implementation manner, in step S400, analyzing based on the pressurization rate, detection time, detection voltage and standard pulse diagram to obtain the optimal detection voltage includes:

[0096] S410, slowly pressurize the cable using the pressurization rate, detection time and detection voltage as detection conditions, and obtain a pulse diagram set; wherein, the pulse diagram set is used to reflect the set of multiple pulse diagrams of the cable within the detection voltage.

[0097] It can be understood that slow pressurization means pressurizing the cable at the pressurization rate from zero voltage to the detection voltage. The pulse diagram set refers to the sum of the pulse diagrams corresponding to different voltages during the process of slowly pressurizing the cable. The pulse diagram set is a set of pulse diagrams obtained in real time during the process of slowly pressurizing the cable. Exemplarily, during the process of detecting a standard cable under the detection voltage and detection time, an oscilloscope can be connected to the standard cable to detect the change of pulses in real time to obtain a pulse diagram, and the obtained pulse diagram can be saved in image form or other formats (such as CSV, TXT, etc.) to obtain the pulse diagram set.

[0098] S420. Analyze based on the pressurization rate, pulse pattern set, and standard pulse pattern to obtain the optimal detection voltage.

[0099] Exemplarily, by analyzing the pulse pattern set, an actual image of the pulse wave generated by the cable under the detection voltage and detection time can be obtained. By analyzing the actual image and the standard pulse pattern, the difference in the angular position of the first pulse between the generation of the actual image and the standard image is obtained. Finally, analyze based on the pressurization rate, the difference in angular position, the pulse pattern set, and the standard pulse pattern to obtain the optimal detection voltage.

[0100] The optimal detection voltage can also be obtained through a detection voltage model, that is, input the pressurization rate, pulse pattern set, and standard pulse pattern into the detection voltage model, and the detection voltage model then outputs the corresponding optimal detection voltage. The training process of the detection voltage model can use the data obtained by processing the pressurization rate, pulse pattern set, standard pulse pattern, and the corresponding optimal detection voltage as the training data set of the detection voltage model, and then input the training data set of the detection voltage model into the detection voltage model for training and learning to finally obtain the detection voltage model.

[0101] With such a setting, through step-by-step pressurization detection, multiple pulse patterns generated by the cable under different pressurization conditions can be obtained, thus forming a pulse pattern set, which can improve the comprehensive understanding of the cable response characteristics. According to the comparative analysis of the pulse pattern set and the standard pulse pattern, the detection voltage can be dynamically adjusted to ensure that the cable test is carried out under the optimal detection voltage and optimize the detection effect.

[0102] In a possible implementation manner, in step S420, analyzing based on the pressurization rate, pulse pattern set, and standard pulse pattern to obtain the optimal detection voltage includes:

[0103] S421. Process the pulse pattern set to obtain an actual pulse pattern; wherein, the actual pulse pattern is used to reflect the actual image of the pulse wave generated under the detection voltage and detection time.

[0104] It can be understood that the pulse pattern set is the sum of the pulse patterns generated by the current cable within the range of zero voltage and the detection voltage. Exemplarily, an actual pulse pattern can be obtained by performing feature extraction on the pulse pattern set. The process of feature extraction can be using the detection voltage as a feature and extracting the pulse pattern at the detection voltage from the pulse pattern set, which is the actual pulse pattern.

[0105] S422. Analyze based on the actual pulse pattern and the standard pulse pattern to obtain a phase angle difference; wherein, the phase angle difference is used to reflect the difference in the angular position between the first pulse in the pulse pattern and the first pulse in the standard pulse pattern.

[0106] It can be understood that the phase angle difference refers to the difference between the phase angle of the first pulse in the pulse sequence of the actual pulse pattern and the phase angle of the first pulse in the pulse sequence of the standard pulse pattern. The pulse sequence refers to the order in which pulse signals are arranged according to the law of time length. Since the detection voltage in the optimal detection conditions changes, the phase angle of the first pulse in the actual pulse pattern is shifted compared to the phase angle of the first pulse in the standard pulse pattern.

[0107] Exemplarily, by analyzing the actual pulse pattern, the position of the first pulse in the pulse sequence of the actual pulse pattern in the actual pulse pattern can be obtained. Then, by analyzing the standard pulse pattern, the position of the first pulse in the pulse sequence of the standard pulse pattern in the standard pulse pattern can be obtained. By comparing the position of the first pulse in the actual pulse pattern with the position of the first pulse in the standard pulse pattern, the phase angle difference can be obtained.

[0108] It is also possible to perform a Fourier transform on the pulse signal in the actual pulse pattern, obtain the spectrum of the actual pulse pattern, perform feature extraction on the spectrum, obtain the main frequency component of the actual pulse pattern and analyze it according to the spectrogram to obtain the phase angle of the actual pulse pattern. Similarly, perform a Fourier transform on the pulse signal in the standard pulse pattern to obtain the phase angle of the standard pulse pattern. Finally, by calculating the difference between the phase angle of the actual pulse pattern and the phase angle of the standard pulse pattern, the phase angle difference is obtained. The Fourier transform refers to the process of converting a pulse signal from the time domain to the frequency domain.

[0109] In a possible implementation manner, in step S422, analyzing according to the actual pulse pattern and the standard pulse pattern to obtain the phase angle difference includes:

[0110] S4221, analyzing the actual pulse pattern to obtain a first phase angle; wherein, the first phase angle is used to reflect the position of the first pulse in the actual pulse pattern in the actual pulse pattern.

[0111] It can be understood that during the process of detecting a cable using an AC system, by aligning the phase angle of the pulse signal with the phase of the power supply voltage, the occurrence time of the pulse signal generated by the discharge phenomenon of the cable can be captured more accurately. The phase angle can be represented by the angle of the corresponding power supply voltage, which can more conveniently describe the time position of the first pulse in the pulse sequence. By analyzing the actual pulse pattern, the first pulse in the actual pulse pattern can be obtained. Then, by analyzing the first pulse and the actual pulse pattern, the position of the moment when the first pulse appears in the actual pulse pattern is obtained, which is the first phase angle. Exemplarily, if the occurrence time of the first pulse in the actual pulse pattern is 30 ms and the angle of the corresponding power supply voltage when the first pulse appears is 85°, then the first phase angle is 85°, and so on.

[0112] S4222. Analyze the standard pulse pattern to obtain a second phase angle, where the second phase angle is used to reflect the position of the first pulse in the standard pulse pattern.

[0113] By analyzing the standard pulse pattern, the first pulse in the standard pulse pattern can be obtained. Then, based on the first pulse and the standard pulse pattern, the position of the moment when the first pulse appears in the standard pulse pattern can be obtained, which is the second phase angle. Exemplarily, if the occurrence moment of the first pulse in the standard pulse pattern is 35 ms and the angle of the corresponding power supply voltage when the first pulse appears is 88°, then the second phase angle is 88°, and so on.

[0114] S4223. Compare the first phase angle with the second phase angle to obtain a phase angle difference, where the phase angle difference is used to reflect the difference between the first phase angle and the second phase angle.

[0115] The phase angle difference can be obtained by performing a difference operation on the first phase angle and the second phase angle. Phase angle difference = first phase angle - second phase angle. Exemplarily, if the first phase angle is 85° and the second phase angle is 88°, then the phase angle difference is -3 (85° - 88°) °; if the first phase angle is 90° and the second phase angle is 86°, then the phase angle difference is 4 (90° - 86°) °, and so on.

[0116] With such a setting, the first phase angle reflects the position when the first pulse appears in the actual pulse pattern, and the second phase angle reflects the position when the first pulse appears in the standard pulse pattern. This helps in the immediate assessment of the cable state. The phase angle difference obtained by comparing the first phase angle and the second phase angle can accurately quantify the difference between the two pulse patterns, providing data support for subsequent detection steps.

[0117] S423. Analyze the pressurization rate, phase angle difference, pulse pattern set, and standard pulse pattern to obtain the optimal detection voltage.

[0118] It can be understood that when judging the positive and negative of the phase angle difference, the offset direction of the optimal detection voltage is obtained. The offset direction refers to the direction in which the detection voltage needs to be increased or decreased to reach the optimal detection voltage when comparing the optimal detection voltage with the preset detection voltage. When the phase angle difference is positive, it indicates that the detection voltage is small and needs to be increased to the optimal detection voltage. When the phase angle difference is negative, it indicates that the detection voltage is large and needs to be decreased to the optimal detection voltage. When the phase angle difference is 0, it indicates that the optimal detection voltage is the same as the detection voltage and no adjustment of the detection voltage is required. At the optimal detection voltage, the discharge phenomenon generated by the cable is comprehensively increased, and finally, in the obtained pulse diagram, the area occupied by the first pulse is offset. The optimal detection voltage can be obtained by judging the sign of the phase angle and then analyzing the judgment result of the sign of the phase angle through different steps according to the pressure application rate, pulse diagram set and standard pulse diagram.

[0119] The optimal detection voltage can also be obtained through a deduction model, that is, inputting the pressure application rate, phase angle difference, pulse diagram set and standard pulse diagram into the deduction model, and the deduction model then outputs the corresponding optimal detection voltage. The training process of the deduction model can use the data obtained by processing the pressure application rate, phase angle difference, pulse diagram set, standard pulse diagram and the corresponding optimal detection voltage as the training data set of the deduction model, and then input the training data set of the deduction model into the deduction model for training and learning to finally obtain the deduction model.

[0120] With such settings, analyzing the phase angle difference helps to promptly detect the discharge phenomenon inside the cable, improve the ability of early warning of cable quality defects, and thus reduce the occurrence of potential risks and failures. The evaluation of the phase angle difference can also provide more detailed levels for the detection process, reduce the test errors caused by voltage condition changes, and improve the consistency of detection.

[0121] In a possible implementation manner, in step S423, analyzing according to the pressure application rate, phase angle difference, pulse diagram set and standard pulse diagram to obtain the optimal detection voltage includes:

[0122] S4231, when the phase angle difference is equal to 0, confirm the detection voltage as the optimal detection voltage.

[0123] It can be understood that when the phase angle difference is equal to 0, it can be explained that the first pulse in the actual pulse diagram arrives at the same time as the first pulse in the standard pulse diagram, that is, it represents that the optimal detection voltage is equal to the detection voltage. Then there is no need to adjust the detection voltage.

[0124] S4232. When the phase angle difference is less than 0, analyze the pulse map set to obtain multiple first sharpness levels, and analyze the standard pulse map to obtain a second sharpness level. Herein, the first sharpness level is used to reflect the resolution of multiple pulse maps within the detection voltage in the pulse map set, and the second sharpness level is used to reflect the resolution of the standard pulse map.

[0125] It can be understood that when the phase angle difference is less than 0, it can be stated that the first pulse in the actual pulse map arrives earlier than the first pulse in the standard pulse map, which means that the optimal detection voltage is lower than the detection voltage. Each pulse map corresponds to a sharpness level. The sharpness level of the pulse maps in the pulse map set can be obtained by analyzing the pulse maps through the analysis functions of an oscilloscope (such as waveform measurement, FFT analysis, etc.) to obtain the signal-to-noise ratio of the pulse maps, and then matching the signal-to-noise ratio of the pulse maps with a preset sharpness interval to obtain the first sharpness level. Similarly, the signal-to-noise ratio of the standard pulse map can be obtained by analyzing the standard pulse map, and then the signal-to-noise ratio of the standard pulse map is matched with the preset sharpness interval to obtain the second sharpness level. The signal-to-noise ratio refers to the ratio of the signal power to the noise power. The noise power refers to the intensity of the random noise outside the signal. The signal power refers to the average power of the effective signal content in the pulse map. The noise power can be obtained by integrating the part of the pulse map without obvious signals. The signal power can be obtained by integrating the peaks in the pulse map whose amplitudes are significantly higher than the noise. The preset sharpness interval refers to a pre-set interval. The preset standard interval includes multiple sharpness levels. Herein, each sharpness level corresponds to a signal-to-noise ratio. The preset sharpness interval can be manually input by a person or directly obtained from a sharpness database. The sharpness database refers to a database that contains different signal-to-noise ratios and their corresponding sharpness levels. These data can be obtained through means such as laboratory experiments, on-site measurements and monitoring, and past experience. After obtaining the data, the collected data is sorted, classified, and archived, useful information and rules are extracted, and then the relevant data is saved in the database to form a sharpness database.

[0126] Exemplarily, assume that the preset sharpness interval is (0, 10). Herein, the signal-to-noise ratio corresponding to 0 in the preset sharpness interval is 1, the signal-to-noise ratio corresponding to 1 in the preset sharpness interval is 2, the signal-to-noise ratio corresponding to 2 in the preset sharpness interval is 4, the signal-to-noise ratio corresponding to 5 in the preset sharpness interval is 8, and the signal-to-noise ratio corresponding to 10 in the preset sharpness interval is 20. When the signal-to-noise ratio is 20, the corresponding sharpness level is 10; when the signal-to-noise ratio is 5, the corresponding sharpness level is 8, and so on.

[0127] S4233. Analyze the second sharpness level and multiple first sharpness levels to obtain a matching time. Herein, the matching time is used to reflect the time when the first sharpness levels are the same as the second sharpness level among multiple first sharpness levels.

[0128] It can be understood that since the optimal detection voltage is lower than the detection voltage, it can be shown that there is a clarity value among multiple first clarities that is equal to the second clarity. Since the first clarity changes with the voltage change during the pressurization process, when the value of the changing first clarity is the same as the value of the second clarity, the signal-to-noise ratio of the initial set voltage (detection voltage) that is most suitable for detecting the standard cable and the voltage (optimal detection voltage) that is most suitable for detecting the current cable after adjustment in the pulse diagram can be matched to obtain the change time corresponding to the first clarity when the clarities are the same, that is, the matching time. The matching time can be obtained through a timer.

[0129] S4234. Analyze according to the matching time and the pressurization rate to obtain the optimal detection voltage.

[0130] It can be understood that the optimal detection voltage = matching time × pressurization rate. Exemplarily, if the matching time is 3 min and the pressurization rate is 100 kV / min, the optimal detection voltage is 300 kV. If the matching time is 5 min and the pressurization rate is 34 kV / min, the optimal detection voltage is 170 kV, and so on, and so forth.

[0131] With such a setting, by judging the sign of the phase angle difference to determine the offset direction of the optimal detection voltage, different processing steps can be formulated to better target different situations and more comprehensively determine the value of the optimal detection voltage. By using the method of clarity matching, it is possible to more quickly analyze the situation where the optimal detection voltage is smaller than the detection voltage.

[0132] In a possible implementation manner, in step S423, when analyzing according to the pressurization rate, phase angle difference, pulse diagram set and standard pulse diagram to obtain the optimal detection voltage, it further includes:

[0133] S4234. When the phase angle difference is greater than 0, analyze according to the pulse diagram set and the standard pulse diagram to obtain multiple noise ratios and multiple pulse width ratios; wherein, the noise ratio is used to reflect the ratio of the noise power of the pulse diagram in the pulse diagram set to the noise power of the standard pulse diagram, and the pulse width ratio is used to reflect the ratio of the pulse duration width of the pulse diagram in the pulse diagram set to the pulse duration width of the pulse diagram in the standard pulse diagram.

[0134] It can be understood that when the phase angle difference is greater than 0, it can be shown that the first pulse in the actual pulse diagram arrives later than the first pulse in the standard pulse diagram, that is, it represents that the optimal detection voltage is higher than the detection voltage. The pulse width refers to the time length of the significant pulse peak in the pulse diagram.

[0135] Noise ratio = First noise power ÷ Second noise power, where the first noise power refers to the noise power of the pulse diagrams in the pulse diagram set, and the second noise power refers to the noise power of the standard pulse diagram. By analyzing the pulse diagrams in the pulse diagram set, the noise powers of multiple pulse diagrams can be obtained. Then, by analyzing the standard pulse diagram, the noise power of the standard pulse diagram can be obtained. Finally, by comparing the noise power of the standard pulse diagram with the noise powers of multiple pulse diagrams one by one, multiple noise ratios can be obtained.

[0136] Pulse width ratio = First pulse width ÷ Second pulse width, where the first pulse width refers to the pulse width of the pulse diagrams in the pulse diagram set, and the second pulse width refers to the pulse width of the standard pulse diagram. By analyzing the pulse diagrams in the pulse diagram set, the pulse widths of multiple pulse diagrams can be obtained. Then, by analyzing the standard pulse diagram, the pulse width of the standard pulse diagram can be obtained. Finally, by comparing the pulse width of the standard pulse diagram with the pulse widths of multiple pulse diagrams one by one, multiple pulse width ratios can be obtained. The pulse width refers to the time length occupied by the peak with an amplitude significantly higher than the noise in the pulse diagram.

[0137] S4235, analyze according to the pressurization rate to obtain multiple pressurization voltages; where the pressurization voltage is used to reflect the magnitude of the voltage value during the slow pressurization process.

[0138] Multiple pressurization voltages can be obtained through the formula where i is a positive integer greater than 0, refers to the pressurization voltage, refers to the pressurization rate, refers to the time point of the i-th time period. Exemplarily, if the pressurization rate is 50 kV / min, the pressurization voltage at the 3rd minute is 150 kV, the pressurization voltage at the 4th minute is 200 kV, and so on.

[0139] S4236, analyze according to multiple noise ratios and multiple pressurization voltages to obtain the first analysis curve; where the first analysis curve is used to reflect the curve of the noise ratio changing with the pressurization voltage.

[0140] Exemplarily, multiple noise ratios can be matched one by one with multiple pressurization voltages to obtain multiple noise data points. Then, through model analysis of the multiple data points, a suitable mathematical model is selected to establish the relationship between the noise ratio and the pressurization voltage, thereby obtaining the first analysis curve. By preprocessing the multiple noise data points, data noise, data outliers, or data missing values in the multiple noise data points can be removed. It can ensure that the availability and accuracy of the multiple noise data points used before analyzing and constructing the first analysis curve meet the standards. Then, by sorting the multiple noise data points, the sorting method can be sorting by the magnitude of the pressurization voltage. Then, by using interpolation methods (such as linear, cubic, or spline interpolation) to estimate the point values between the given multiple noise data points. This helps to create a continuous and smooth curve from the relatively discrete data among the multiple noise data points. By fitting the multiple noise data points to a suitable curve, various curve fitting techniques (such as least squares regression or polynomial fitting) can be used to find the best fit curve that can suitably represent the first analysis curve. The noise data points are data points with the pressurization voltage as the abscissa and the noise ratio as the ordinate.

[0141] S4237. Analyze based on multiple pulse width ratios and multiple pressurization voltages to obtain a second analysis curve; wherein, the second analysis curve is used to reflect the curve of the pulse width ratio changing with the pressurization voltage.

[0142] Exemplarily, multiple pulse width ratios can be matched one by one with multiple pressurization voltages to obtain multiple width data points. By sorting the multiple width data points, the width data points can be sorted in a specific order according to the relevant parameters of the width data points (for example, the magnitude of the pressurization voltage). Then, by plotting a scatter diagram of the multiple width data points, and then by using interpolation methods (such as linear, cubic, or spline interpolation) to estimate the point values between the multiple width data points in the plotted scatter diagram. This helps to create a continuous and smooth curve from the relatively discrete scatter diagram. Finally, by fitting a suitable curve to the width data points, various curve fitting techniques (such as least squares regression or polynomial fitting) can be used to find the best fit curve that can suitably represent the second analysis curve. By analyzing the second analysis curve to determine relevant features, such as the roughness, slope, and radius of the second analysis curve. These features can be used to characterize the second analysis curve and evaluate the curve quality of the second analysis curve. The width data points are data points with the pressurization voltage as the abscissa and the pulse width ratio as the ordinate.

[0143] S4238. Analyze based on the first analysis curve and the second analysis curve to obtain the optimal detection voltage.

[0144] By processing the first analysis curve and the second analysis curve, a curve reflecting the relationship between the noise ratio and the pulse width ratio can be obtained. Then, by analyzing the relationship curve between the noise ratio and the pulse width ratio, a data point in the curve with a pulse width ratio of 1 and a minimum noise ratio can be obtained. Then, by analyzing the data point with a pulse width ratio of 1 and a minimum noise ratio with the second analysis curve, an optimal detection voltage can be obtained.

[0145] The first analysis curve and the second analysis curve can also be analyzed to obtain a joint function, and then the joint function can be used for analysis to obtain a voltage that makes the pulse width ratio equal to 1 and minimizes the noise ratio in the joint function, and the voltage can be confirmed as the optimal detection voltage. The joint function refers to the combination of the first analysis curve and the second analysis curve. For example, if the first analysis curve is ,in, is the noise ratio, is the applied voltage. The second analysis curve is ,in is the pulse width ratio, is the applied voltage, then the joint function is .

[0146] With such a setting, the offset direction of the optimal detection voltage is determined by the sign of the phase angle difference, so that different processing steps can be formulated to better target different situations and more comprehensively determine the value of the optimal detection voltage. The optimal detection voltage can be obtained by using the third analysis curve obtained by using the noise ratio and the pulse width ratio. The detection voltage can be better analogized to the optimal detection voltage to provide a more accurate minimum detection voltage.

[0147] In a possible implementation, in step S4238, analyzing the first analysis curve and the second analysis curve to obtain the optimal detection voltage includes:

[0148] S42381, analyzing the first analysis curve and the second analysis curve to obtain a third analysis curve; wherein the third analysis curve is used to reflect the relationship curve between the noise ratio and the pulse width ratio.

[0149] It can be understood that the third analysis curve uses the noise ratio as the horizontal coordinate and the pulse width ratio as the vertical coordinate. The third analysis curve can be obtained by combining the first analysis curve with the second analysis curve. The process of combining the curves can be to eliminate the applied voltage using the elimination method. The elimination method refers to eliminating one or more variables in multiple equations through algebraic operations. For example, if the first analysis curve is , the second analysis curve is , where k, a, b are constants and V is the applied voltage, then the third analysis curve is , and so on.

[0150] S42382. Analyze according to the third analysis curve to obtain a normalized point; among them, the normalized point is used to reflect the data point in the third analysis curve where the pulse width ratio is 1 and the noise ratio is the smallest.

[0151] It can be understood that when the pulse width ratio is 1, it means that the pulse width of the pulse diagram in the pulse diagram set is equal to the pulse width of the standard pulse diagram, which can indicate that the pulse signal of the pulse diagram in the pulse diagram set and the background noise of the pulse diagram in the pulse diagram set are relatively the best matched. And the noise ratio reaches the lowest point, at this time the intensity of the pulse signal reflected by the pulse diagram set is the strongest relative to the noise. The data point with the smallest abscissa when the ordinate is 1 can be obtained through the analysis of the third analysis curve, that is, the normalized point.

[0152] S42383. Analyze according to the normalized point and the second analysis curve to obtain the optimal detection voltage.

[0153] It can be understood that the abscissa of the normalized point is the noise ratio and the ordinate is the pulse width ratio. The optimal detection voltage can be directly obtained by substituting the ordinate of the normalized point into the second analysis curve. The optimal detection voltage can also be directly obtained by substituting the abscissa of the normalized point into the first analysis curve.

[0154] With such a setting, the conditions corresponding to the normalized point provide a scientific basis for the optimal detection voltage sought by the detection system, enabling the detection process to make full use of the optimal detection voltage, enhancing the sensitivity and response ability of the system. By analyzing the curve to draw a conclusion, the optimization of the detection voltage is made more scientific and rigorous, reducing the uncertainty brought by using empirical decisions.

[0155] S500. Analyze according to the detection time, the optimal detection voltage and the standard pulse diagram to obtain the optimal detection time; among them, the optimal detection time is used to reflect the time for detecting the cable under the condition of the optimal detection voltage.

[0156] Exemplarily, the cable can be processed by the optimal detection voltage and the detection time to obtain an image of the pulse wave generated by the cable when the cable is detected under the optimal detection voltage and the detection time. Then, analyze the obtained pulse wave image and the standard pulse diagram to obtain the ratio between the time when the discharge amount of the cable climbs under the optimal detection voltage and the time when the discharge amount of the cable climbs under the detection voltage. Finally, analyze through the ratio and the detection time to ultimately obtain the optimal detection time.

[0157] The optimal detection time can also be obtained through an analysis model, that is, the detection time, the optimal detection voltage, and the standard pulse diagram are input into the analysis model, and the analysis model then outputs the corresponding optimal detection time. The training process of the analysis model can use the data obtained by processing the detection time, the optimal detection voltage, the standard pulse diagram, and the corresponding optimal detection time as the training data set of the analysis model, and then input the training data set of the analysis model into the analysis model for training and learning to finally obtain the analysis model.

[0158] In a possible implementation manner, in step S500, analyzing according to the detection time, the optimal detection voltage, and the standard pulse diagram to obtain the optimal detection time includes:

[0159] S510, the control device controls the detection device to detect the cable based on the optimal detection voltage and the detection time, and obtains the optimal pulse diagram; wherein, the optimal pulse diagram is used to reflect the image of the pulse wave generated by the cable when the cable is detected at the optimal detection voltage and the detection time.

[0160] It can be understood that the detection process can use the optimal detection voltage as the applied voltage and the detection time as the continuous application time of the applied voltage. The oscilloscope can be connected to the cable during the process of detecting the cable at the optimal detection voltage and the detection time to detect the change of the pulse in real time to obtain the optimal pulse diagram.

[0161] S520, analyzing according to the optimal pulse diagram and the standard pulse diagram to obtain the time ratio; wherein the time ratio is used to reflect the ratio between the time for the discharge amount of the cable to climb at the optimal detection voltage and the time for the discharge amount of the cable to climb at the detection voltage.

[0162] It can be understood that during the detection process of the cable, when the applied voltage is close to the optimal detection voltage, the initial discharge amount is usually relatively low. When the applied voltage reaches the optimal detection voltage, the discharge amount will show a relatively obvious increase. The time for the discharge amount to climb is the duration when the discharge amount significantly increases when the applied voltage reaches the optimal detection voltage.

[0163] The time occupied by the change in pulse amplitude in the optimal pulse diagram can be analyzed as the time for the discharge amount of the cable to climb under the optimal detection voltage. The time for the discharge amount of the cable to climb under the optimal detection voltage can also be obtained by analyzing the pulse frequency in the optimal pulse diagram. The pulse frequency refers to the number of pulses observed within a preset observation time. The preset observation time is a preset time period for observing the number of pulses in the pulse diagram, used for regular observation, processing, and analysis of data to obtain the pulse frequency. The preset observation time can be manually input by a person, and can also be directly obtained by analyzing the cycle database. The observation time database refers to a database containing data at different set observation times, and these data can be obtained through means such as laboratory experiments, on-site measurements and monitoring, and past experience. After obtaining the data, the collected data is sorted, classified, and archived, useful information and rules are extracted, and the relevant data is saved to the database to form the observation time database.

[0164] Similarly, the time occupied by the change in pulse amplitude in the standard pulse diagram can be analyzed as the time for the discharge amount of the cable to climb under the detection voltage. The time for the discharge amount of the cable to climb under the detection voltage can also be obtained by analyzing the pulse frequency in the standard pulse diagram.

[0165] In a possible implementation manner, in step S520, according to the analysis of the optimal pulse diagram and the standard pulse diagram, a time ratio is obtained, including:

[0166] S521, analyze the optimal pulse diagram to obtain a first climbing time; wherein, the first climbing time is used to reflect the time occupied by the discharge increment in the optimal pulse diagram.

[0167] It can be understood that the discharge increment refers to the increased amount of partial discharge. By analyzing the optimal pulse diagram, the change in the discharge increment of the cable under the optimal detection voltage can be obtained, and then the timestamp when the change in the discharge increment of the cable under the optimal detection voltage in the optimal pulse diagram becomes 0 is used as the first climbing time. The timestamp refers to information containing time and can be accurate to time units such as seconds and milliseconds.

[0168] It is also possible to analyze the preset threshold and the optimal pulse diagram, identify the obvious rising part from the optimal pulse diagram, and obtain the time required from the start of the pulse signal rising until it reaches the preset threshold from the optimal pulse diagram, which is the first climbing time. The preset threshold refers to the value of the preset discharge increment. The preset threshold can be manually input by humans, or directly obtained from the threshold database. The threshold database refers to a database containing different set discharge increments, and these data can be obtained through means such as laboratory experiments, on-site measurements and monitoring, and past experience. After obtaining the data, the collected data is sorted, classified, and archived, useful information and rules are extracted, and then the relevant data is saved to the database to form the threshold database.

[0169] In a possible implementation manner, in step S521, analyzing the optimal pulse diagram to obtain the first climbing time includes:

[0170] S5211, analyzing the optimal pulse diagram to obtain the first discharge quantity change; wherein, the first discharge quantity change is used to reflect the change of the discharge increment of the cable under the optimal detection voltage.

[0171] It can be understood that the integral of the graph of the optimal pulse diagram with respect to time is the first discharge quantity. The value of the discharge quantity can be obtained by performing integral processing on the graph of the optimal pulse diagram, and then analyzing the value of the discharge quantity obtained through integral processing and the time stamp corresponding to the optimal pulse diagram to obtain the first discharge quantity change. Integral processing refers to performing integral operations on the values represented by the optimal pulse diagram to obtain the discharge quantity. The first discharge quantity refers to the discharge quantity reflected by the optimal pulse diagram.

[0172] S5212, analyzing the first discharge quantity change and the optimal pulse diagram to obtain the first climbing time; wherein, the first climbing time is used to reflect the time taken when the first discharge quantity change becomes 0 in the optimal pulse diagram.

[0173] It is possible to analyze the moment when the first discharge quantity change becomes 0, mark it at the corresponding moment of the optimal pulse diagram, and then analyze the marked optimal pulse diagram to confirm the time period from when the amplitude of the pulse signal in the optimal pulse diagram starts to change until it becomes 0 as the first climbing time.

[0174] With such a setting, by analyzing the first climbing time, dynamic information about the cable discharge process is provided, which can reflect the response speed of the cable to voltage changes and better help evaluate the electrical performance of the cable. By analyzing when the discharge quantity change in the optimal pulse diagram becomes zero, the critical performance of the cable can be better understood and help determine the optimal detection time of the cable.

[0175] S522. Analyze the standard pulse diagram to obtain the second rise time, where the second rise time is used to reflect the time occupied by the discharge increment in the standard pulse diagram.

[0176] By analyzing the standard pulse diagram, the change in the discharge increment of the cable under the detection voltage can be obtained, and then the time stamp when the change in the discharge increment of the cable under the detection voltage in the standard pulse diagram becomes 0 is used as the second rise time.

[0177] It is also possible to analyze the preset threshold and the standard pulse diagram, identify the obvious rising part from the standard pulse diagram, and obtain the time required from the start of the pulse signal rising until it reaches the preset threshold from the standard pulse diagram, which is the second rise time. The preset threshold can be manually input by humans, or the preset threshold can be directly obtained from the threshold database.

[0178] In a possible implementation manner, in step S522, analyzing the standard pulse diagram to obtain the second rise time includes:

[0179] S5221. Analyze the standard pulse diagram to obtain the second discharge quantity change, where the second discharge quantity change is used to reflect the change in the discharge increment of the cable theoretically under the detection voltage.

[0180] It can be understood that the integral of the graph of the standard pulse diagram with respect to time is the second discharge quantity. The value of the second discharge quantity can be obtained by performing integral processing on the graph of the standard pulse diagram, and then the second discharge quantity change is obtained by analyzing the value of the second discharge quantity obtained through integral processing and the time stamp corresponding to the standard pulse diagram. The second discharge quantity refers to the discharge quantity reflected by the standard pulse diagram.

[0181] S5222. Analyze the second discharge quantity change and the standard pulse diagram to obtain the second rise time, where the second rise time is used to reflect the time taken when the second discharge quantity change becomes 0 in the standard pulse diagram.

[0182] By analyzing the moment when the second discharge quantity change becomes 0, marking at the corresponding moment in the standard pulse diagram, and then analyzing the marked standard pulse diagram, the time period from when the amplitude of the pulse signal in the standard pulse diagram starts to change until it becomes 0 is confirmed as the second rise time.

[0183] With such a setting, by analyzing the second rise time, dynamic information about the cable discharge process is provided, which can reflect the response speed of the cable to voltage changes, better help evaluate the electrical performance of the cable, and by analyzing when the discharge quantity change in the optimal pulse diagram becomes zero, the critical performance of the cable can be better understood, helping to determine the optimal detection time of the cable.

[0184] S523. Compare the first rising time with the second rising time to obtain a time ratio, where the time ratio is used to reflect the ratio between the first rising time and the second rising time.

[0185] It can be understood that the time ratio = the first rising time ÷ the second rising time. Exemplarily, if the first rising time is 20 ms and the second rising time is 40 ms, then the time ratio is 1 / 2 (20 ms ÷ 40 ms); if the first rising time is 50 ms and the second rising time is 25 ms, then the time ratio is 2 (50 ms ÷ 25 ms), and so on.

[0186] With such a setting, measuring the discharge amount rising time of the pulse diagram helps to reduce errors caused by signal noise or other influencing factors, and improves the reliability of the detection results. Furthermore, the difference is reflected by the time ratio, thus providing an effective quantitative means for the performance evaluation of the cable. This method can not only improve the accuracy of cable detection, but also provide important support for fault warning, health monitoring, and optimizing the detection method.

[0187] S530. Analyze the time ratio and the detection time to obtain the optimal detection time.

[0188] It can be understood that the optimal detection time = the time ratio × the detection time. Exemplarily, if the time ratio is 1 / 2 and the detection time is 6 min, then the optimal detection time is 3 (1 / 2 × 6 min) min; if the time ratio is 2 and the detection time is 3 min, then the optimal detection time is 6 min (2 × 3 min), and so on.

[0189] With such a setting, the time ratio obtained by analyzing between the optimal pulse diagram and the standard pulse diagram can better determine the optimal detection time, avoid errors caused by improper detection time, and improve the reliability and consistency of the detection.

[0190] S600. The control device controls the detection device to adjust the detection voltage to the optimal detection voltage and the detection time to the optimal detection time.

[0191] It can be understood that the control device is used to supervise and control the detection process for quality inspection of high-voltage cross-linked cables. The detection device is used for quality inspection of high-voltage cross-linked cables.

[0192] Exemplarily, if the detection voltage is 250 kV and the detection time is 5 min, and the optimal detection voltage is 260 kV and the detection time is 6 min, then adjust the 250 kV detection voltage in the detection conditions to 260 kV, and adjust the 5 min detection time in the detection conditions to 6 min, and so on.

[0193] With such settings, by analyzing the standard pulse diagram, the detected voltage, and the detection time, the cable status can be more accurately reflected, reducing false alarms or missed detections. By obtaining the optimal detection voltage and the optimal detection time, the accuracy of the detection results can be improved, and in the face of tests on similar cables, the characteristics of different cables can be adapted to. According to the parameters and characteristics of different types of cables, the detection conditions can be dynamically adjusted, making the detection equipment more adaptable and flexible, and capable of being applied to the detection of different types of cables.

[0194] It should be understood that the magnitudes of the sequence numbers of the steps in the above embodiments do not imply the order of execution. The order of execution of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

[0195] Corresponding to the high-voltage cross-linked cable production quality detection method described in the above embodiments, an embodiment of the present application also provides a high-voltage cross-linked cable production quality detection system. Each module of the high-voltage cross-linked cable production quality detection system can implement each step of the high-voltage cross-linked cable production quality detection method. Figure 3 The block diagram of the high-voltage cross-linked cable production quality detection system provided by the embodiment of the present application is shown. For the sake of convenience of description, only the parts related to the embodiment of the present application are shown.

[0196] Refer to Figure 3 , the high-voltage cross-linked cable production quality detection system includes:

[0197] A first acquisition module, configured to acquire the detection voltage and the detection time; wherein, the detection voltage is used to reflect the voltage of the detection initially set for the cable, and the detection time is used to reflect the time initially set for detecting the cable at the detection voltage.

[0198] A second acquisition module, configured to acquire the standard pulse diagram; wherein, the standard pulse diagram is used to reflect the image of the pulse wave generated by the standard cable when the standard cable is detected at the detection voltage and the detection time.

[0199] A third acquisition module, configured to acquire the pressurization rate; wherein the pressurization rate is used to reflect the increasing speed of the voltage when pressurizing the cable.

[0200] A first analysis module, configured to analyze according to the pressurization rate, the detection time, the detection voltage, and the standard pulse diagram to obtain the optimal detection voltage; wherein, the optimal detection voltage is used to reflect the voltage for detecting the cable after adjustment.

[0201] A second analysis module, configured to analyze according to the detection time, the optimal detection voltage, and the standard pulse diagram to obtain the optimal detection time; wherein, the optimal detection time is used to reflect the time for detecting the cable under the condition of the optimal detection voltage.

[0202] A control module for controlling the device to control the detection device to adjust the detection voltage to the optimal detection voltage and adjust the detection time to the optimal detection time.

[0203] It should be noted that for the information interaction, execution process, etc. between the above modules, since they are based on the same concept as the method embodiments of this application, their specific functions and the technical effects brought can be specifically referred to in the method embodiment part, and will not be elaborated here.

[0204] Those skilled in the art can clearly understand that for the convenience and conciseness of description, only the above division of each functional unit and module is used as an example. In actual applications, the above functions can be allocated to different functional units and modules according to needs, that is, the internal structure of the system is divided into different functional units or modules to complete all or part of the functions described above. Each functional unit and module in the embodiment can be integrated in a processing unit, or each unit can exist physically alone, or two or more units can be integrated in one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit. In addition, the specific names of each functional unit and module are only for the convenience of mutual distinction and do not limit the protection scope of this application. The specific working process of the units and modules in the above system can refer to the corresponding process in the foregoing method embodiment and will not be elaborated here.

[0205] The embodiment of the present application also provides a high-voltage cross-linked cable production quality detection device, including a detection device and a control device, and the detection device is electrically connected to the control device. Figure 4 It is a schematic structural diagram of the control device 4 provided in an embodiment of the present application. As Figure 4 shown, the control device 4 of this embodiment includes: at least one processor 40 ( Figure 4 only one is shown in Figure 4 ), at least one memory 41 (

[0206] only one is shown in

[0207] The control device 4 may be a computing device such as a desktop computer, a notebook, a palm computer, etc. The control device 4 may include, but is not limited to, a processor 40 and a memory 41. Those skilled in the art can understand that Figure 4 merely examples of the control device 4 are given, which do not constitute a limitation on the control device 4. It may include more or fewer components than those shown in the figure, or combine certain components, or different components. For example, it may also include input / output devices, network access devices, buses, etc.

[0208] The processor 40 may be a central processing unit (CPU), and the processor 40 may also be other general-purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc.

[0209] In some embodiments, the memory 41 may be an internal storage unit of the control device 4, such as the hard disk or memory of the control device 4. In other embodiments, the memory 41 may also be an external storage device of the control device 4, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the control device 4. Further, the memory 41 may also include both the internal storage unit of the control device 4 and the external storage device. The memory 41 is used to store an operating system, application programs, a boot loader, data, and other programs, such as the program code of the computer program, etc. The memory 41 may also be used to temporarily store data that has been output or will be output.

[0210] The embodiments of the present application also provide a computer-readable storage medium storing a computer program, and when the computer program is executed by a processor, the steps in any of the above method embodiments are implemented.

[0211] An embodiment of the present application provides a computer program product. When the computer program product runs on a high-voltage cross-linked cable production quality inspection device, the high-voltage cross-linked cable production quality inspection device implements the steps in any of the above method embodiments.

[0212] If the integrated unit is implemented in the form of 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, to implement all or part of the processes in the above method embodiments of the present application, a computer program can be used to instruct relevant hardware to complete. The computer program can be stored in a computer-readable storage medium. When the computer program is executed by a processor, the steps in the above method embodiments can be implemented. Among them, the computer program includes computer program code, and the computer program code can be in the form of source code, object code, executable file or some intermediate form, etc. The computer-readable medium can at least include: any entity or device capable of carrying the computer program code to the high-voltage cross-linked cable production quality inspection device, recording medium, computer memory, read-only memory (ROM), random access memory (RAM), electrical carrier signal, telecommunication signal, and software distribution medium. For example, a USB flash drive, a mobile hard disk, a magnetic disk or an optical disc, etc.

[0213] In the above embodiments, the descriptions of the various embodiments have their own emphases. For the parts not detailed or recorded in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0214] Those of ordinary skill in the art can realize that the units and algorithm steps of the examples described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed in a hardware or software manner depends on the specific application and design constraints of the technical solution. A professional technician can use different methods to implement the described functions for each specific application, but such implementation should not be considered to exceed the scope of the present application.

[0215] In the embodiments provided in the present application, it should be understood that the disclosed high-voltage cross-linked cable production quality detection system and equipment can be implemented in other ways. For example, the high-voltage cross-linked cable production quality detection system embodiments described above are merely illustrative. For example, the division of the modules or units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the displayed or discussed coupling or direct coupling or communication connection between each other can be through some interfaces, and the indirect coupling or communication connection of devices or units can be in electrical, mechanical or other forms.

[0216] The units described as separate components may or may not be physically separated. The components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0217] The above-described embodiments are only used to illustrate the technical solutions of the present application, and are not intended to limit them. Although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements 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 application, and should all be included in the protection scope of the present application.

Claims

1. A method for detecting the production quality of a high-voltage cross-linked cable, characterized in that: include: Obtaining a detection voltage and a detection time; wherein the detection voltage is used to reflect the detection voltage initially set for the cable, and the detection time is used to reflect the time initially set for detecting the cable under the detection voltage; Acquire a standard pulse diagram; wherein the standard pulse diagram is used to reflect the image of the pulse wave generated by the standard cable when the standard cable is tested at the test voltage and the test time; Acquire a voltage application rate; wherein the voltage application rate is used to reflect the speed at which the voltage increases when the cable is pressurized; The optimal detection voltage is obtained by analyzing the pressure rate, the detection time, the detection voltage and the standard pulse diagram, including: processing the cable under the pressure rate, the detection voltage and the detection time to obtain a set of multiple pulse diagrams of the cable within the detection voltage, and then analyzing the set of multiple pulse diagrams with the pressure rate and the standard pulse diagram to obtain the optimal detection voltage; wherein the optimal detection voltage is used to reflect the voltage of the cable after the cable is adjusted; Analyzing the detection time, the optimal detection voltage and the standard pulse diagram to obtain the optimal detection time, including: processing the cable through the optimal detection voltage and detection time to obtain an image of the pulse wave generated by the cable when the cable is detected under the optimal detection voltage and detection time, and then analyzing the obtained pulse wave image with the standard pulse diagram to obtain the ratio between the time when the discharge amount of the cable rises under the optimal detection voltage and the time when the discharge amount of the cable rises under the detection voltage, and finally analyzing the ratio with the detection time to obtain the optimal detection time; wherein the optimal detection time is used to reflect the time for detecting the cable under the optimal detection voltage condition; The control device controls the detection device to adjust the detection voltage to the optimal detection voltage and adjust the detection time to the optimal detection time.

2. The high-voltage cross-linked cable production quality detection method according to claim 1, characterized in that: The analyzing the pressurization rate, the detection time, the detection voltage and the standard pulse diagram to obtain the optimal detection voltage includes: The pressurization rate, the detection time and the detection voltage are used as detection conditions to perform a slow pressurization detection on the cable, and a pulse atlas is obtained; wherein the pulse atlas is used to reflect a collection of multiple pulse diagrams of the cable within the detection voltage; The optimum detection voltage is obtained by analyzing the pressure increase rate, the pulse diagram set and the standard pulse diagram.

3. The high voltage cross-linked cable production quality detection method according to claim 2, characterized in that: The step of analyzing the pressure increase rate, the pulse graph set, and the standard pulse graph to obtain the optimal detection voltage includes: Processing is performed according to the pulse atlas to obtain an actual pulse diagram; wherein the actual pulse diagram is used to reflect the actual image of the pulse wave generated under the detection voltage and the detection time; Analyze the actual pulse diagram and the standard pulse diagram to obtain a phase angle difference; wherein the phase angle difference is used to reflect the difference in angular position between the first pulse in the pulse diagram and the first pulse in the standard pulse diagram; The optimum detection voltage is obtained by analyzing the pressurization rate, the phase angle difference, the pulse diagram set and the standard pulse diagram.

4. The high-voltage cross-linked cable production quality detection method according to claim 3, characterized in that: The step of analyzing the actual pulse diagram and the standard pulse diagram to obtain a phase angle difference includes: Analyze the actual pulse diagram to obtain a first phase angle; wherein the first phase angle is used to reflect the position of the first pulse in the actual pulse diagram; Analyze the standard pulse diagram to obtain a second phase angle; wherein the second phase angle is used to reflect the position of the first pulse in the standard pulse diagram; The first phase angle is compared with the second phase angle to obtain a phase angle difference; wherein the phase angle difference is used to reflect the difference between the first phase angle and the second phase angle.

5. The high-voltage cross-linked cable production quality detection method according to claim 3, characterized in that: The step of analyzing the pressure increase rate, the phase angle difference, the pulse diagram set and the standard pulse diagram to obtain the optimal detection voltage includes: When the phase angle difference is equal to 0, confirming the detection voltage as the optimal detection voltage; And / or, the analyzing according to the pressurization rate, the phase angle difference, the pulse diagram set and the standard pulse diagram to obtain the optimal detection voltage further includes: When the phase angle difference is less than 0, the pulse atlas is analyzed to obtain a plurality of first clarity, and the standard pulse atlas is analyzed to obtain a second clarity; wherein the first clarity is used to reflect the resolution of a plurality of pulse atlases within the detection voltage in the pulse atlas, and the second clarity is used to reflect the resolution of the standard pulse atlas; Analyze the second definition and the first definitions to obtain a matching time; wherein the matching time is used to reflect the time when the first definitions are the same as the second definition; An optimum detection voltage is obtained by analyzing the matching time and the pressure increase rate.

6. The high-voltage cross-linked cable production quality detection method according to claim 3, characterized in that: The analyzing according to the pressurizing rate, the phase angle difference, the pulse diagram set and the standard pulse diagram to obtain the optimal detection voltage also includes: When the phase angle difference is greater than 0, a plurality of noise ratios and a plurality of pulse width ratios are obtained by analyzing the pulse atlas set and the standard pulse atlas; wherein the noise ratio is used to reflect the ratio between the noise power of the pulse atlas in the pulse atlas set and the noise power of the standard pulse atlas, and the pulse width ratio is used to reflect the ratio between the pulse duration width of the pulse atlas in the pulse atlas set and the pulse duration width in the standard pulse atlas; Analyzing the pressure rate to obtain a plurality of pressure voltages; wherein the pressure voltage is used to reflect the voltage value during the slow pressure process; Analyzing the plurality of noise ratios and the plurality of applied voltages to obtain a first analysis curve; wherein the first analysis curve is a curve used to reflect the change of the noise ratio with the change of the applied voltage; A second analysis curve is obtained by analyzing the plurality of pulse width ratios and the plurality of applied voltages; wherein the second analysis curve is used to reflect the curve of the pulse width ratio changing with the applied voltage; An optimum detection voltage is obtained by analyzing the first analysis curve and the second analysis curve.

7. The method for detecting the production quality of a high-voltage cross-linked cable according to claim 6, characterized in that: The step of analyzing the first analysis curve and the second analysis curve to obtain an optimal detection voltage includes: Analyze the first analysis curve and the second analysis curve to obtain a third analysis curve; wherein the third analysis curve is used to reflect the relationship curve between the noise ratio and the pulse width ratio; Analyze according to the third analysis curve to obtain a normalized point; wherein the normalized point is used to reflect the data point in the third analysis curve where the pulse width ratio is 1 and the noise ratio is the smallest; An optimum detection voltage is obtained by analyzing the normalized point and the second analysis curve.

8. The high voltage cross-linked cable production quality detection method according to claim 1, characterized in that: The analyzing the detection time, the optimal detection voltage and the standard pulse diagram to obtain the optimal detection time includes: The control device controls the detection device to detect the cable based on the optimal detection voltage and the detection time, and obtains an optimal pulse diagram; wherein the optimal pulse diagram is used to reflect the image of the pulse wave generated by the cable when the cable is detected under the optimal detection voltage and the detection time; The optimal pulse diagram and the standard pulse diagram are analyzed to obtain a time ratio, wherein the time ratio is used to reflect the ratio between the time for the discharge amount of the cable to increase at the optimal detection voltage and the time for the discharge amount of the cable to increase at the detection voltage; An optimum detection time is obtained by analyzing the time ratio and the detection time.

9. The method for detecting the production quality of a high-voltage cross-linked cable according to claim 8, characterized in that: The step of analyzing the optimal pulse diagram and the standard pulse diagram to obtain the time ratio includes: Analyze the optimal pulse diagram to obtain a first climbing time; wherein the first climbing time is used to reflect the time occupied by the discharge increment in the optimal pulse diagram; Analyze the standard pulse diagram to obtain a second climbing time; wherein the second climbing time is used to reflect the time occupied by the discharge increment in the standard pulse diagram; The first climbing time is compared with the second climbing time to obtain a time ratio; wherein the time ratio is used to reflect the ratio between the first climbing time and the second climbing time.

10. The method for detecting the production quality of a high-voltage cross-linked cable according to claim 9, characterized in that: The step of analyzing the optimal pulse diagram to obtain a first rising time includes: Analyze the optimal pulse diagram to obtain a first discharge amount change; wherein the first discharge amount change is used to reflect the change of the discharge increment of the cable under the optimal detection voltage; Analyzing the first discharge amount change and the optimal pulse diagram, obtaining a first climbing time; wherein the first climbing time is used to reflect the time taken for the first discharge amount change to become 0 in the optimal pulse diagram; And / or, analyzing the standard pulse diagram to obtain a second rise time includes: Analyze the standard pulse diagram to obtain a second discharge amount change; wherein the second discharge amount change is used to reflect the change of the discharge increment of the cable under the detection voltage in theory; A second rising time is obtained by analyzing the second discharge amount change and the standard pulse diagram; wherein the second rising time is used to reflect the time taken for the second discharge amount change to become 0 in the standard pulse diagram.

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