A model adjustment method and related device

Abstract

The present application provides a model adjustment method and related devices, which relate to the field of valve-side outlet devices. For a specified voltage value, such as an ultra-high voltage voltage value, a preset voltage amplitude that is less than the voltage value is set, a reference electric field calculation model of the preset voltage amplitude is constructed, and the reference performance parameters of the model are determined. Based on the difference data between the reference performance parameters and the target performance parameters of the valve-side outlet device corresponding to the specified voltage value, the model structure of the reference electric field calculation model is adjusted until a reference electric field calculation model that meets the preset difference range requirements is obtained. Since the reference electric field calculation model is similar to the performance parameters of the ultra-high voltage valve-side outlet device, when the reference electric field calculation model is used to construct the valve-side outlet device, the obtained device can be used as an equivalent device of the ultra-high voltage valve-side outlet device, replacing the ultra-high voltage valve-side outlet device for subsequent testing, which will reduce the cost and floor space of subsequent testing.

Description

Technical Field

[0001] The present application relates to the field of valve-side outlet devices, and more specifically, to a model adjustment method and related devices. Background Art

[0002] In modern power systems, high-voltage power transmission is crucial for ensuring efficiency and reliability. Ultra-high voltage (UHV) (e.g., ±800kV-±1100kV), a specialized HVDC transmission technology, offers unique advantages in energy transmission. UHV plays a crucial role in energy transmission and supply and is widely used in large-scale HVDC transmission projects. Using HVDC technology for long-distance, high-capacity energy transmission offers advantages such as low loss, long-distance transmission, and cost savings.

[0003] While UHV offers numerous advantages, it also presents challenges. UHV places extremely high demands on equipment and insulation materials, requiring significant investment in both construction and maintenance. The insulation structure of the UHV valve-side outlet device is particularly crucial within UHV voltage structures, necessitating detailed structural analysis and quantitative calculations. Due to the device's size, an equivalent device is urgently needed for subsequent testing. Therefore, determining an equivalent device for a UHV valve-side outlet device is a pressing technical challenge facing those skilled in the art. Summary of the Invention

[0004] In view of this, the present application provides a model adjustment method and related devices to solve the problem of urgently needing to determine the equivalent device of the ultra-high pressure valve side outlet device.

[0005] To solve the above technical problems, this application adopts the following technical solutions:

[0006] A model adjustment method, comprising:

[0007] Constructing a reference electric field calculation model of a preset voltage amplitude; the preset voltage amplitude is less than a specified voltage value;

[0008] Determining reference performance parameters of the reference electric field calculation model;

[0009] Based on the difference data between the reference performance parameters and the target performance parameters of the valve-side outlet device corresponding to the specified voltage value, the model structure of the reference electric field calculation model is adjusted until a reference electric field calculation model is obtained in which the difference values ​​between the new reference performance parameters and the target performance parameters meet the preset difference range; the reference electric field calculation model serves as reference data for constructing an equivalent device of the valve-side outlet device corresponding to the specified voltage value.

[0010] Optionally, determining reference performance parameters of the reference electric field calculation model includes:

[0011] Determining parameter information of the reference electric field calculation model; the parameter information includes assigned voltage and material parameters;

[0012] The parameter information is used to determine reference performance parameters of the reference electric field calculation model; the reference performance parameters include an AC electric field safety margin and a DC maximum field strength.

[0013] Optionally, using the parameter information to determine reference performance parameters of the reference electric field calculation model includes:

[0014] Determine a voltage distribution cloud map and a field strength cloud map using the parameter information;

[0015] The AC electric field safety margin and the DC maximum field strength are calculated according to the voltage distribution cloud map and the field strength cloud map.

[0016] Optionally, adjusting the model structure of the reference electric field calculation model based on difference data between the reference performance parameter and the target performance parameter of the valve-side outlet device corresponding to the specified voltage value includes:

[0017] Obtaining target performance parameters of the valve-side outlet device corresponding to the specified voltage value;

[0018] Calculating a difference between the reference performance parameter and the target performance parameter;

[0019] If the difference is greater than a preset threshold, an adjustment operation is performed on a designated model component of the reference electric field calculation model.

[0020] Optionally, obtaining a target performance parameter of the valve-side outlet device corresponding to the specified voltage value includes:

[0021] Constructing a simulation model of the valve-side outlet device corresponding to the specified voltage value;

[0022] The simulation model is used to obtain target performance parameters of the valve-side outlet device corresponding to the specified voltage value.

[0023] Optionally, adjusting a specified model component of the reference electric field calculation model includes:

[0024] At least one of the insulation structure and the oil channel chamfer of the reference electric field calculation model is adjusted; the insulation structure includes: at least one of the insulation shape and the number of insulation layers.

[0025] Optionally, the structure in the reference electric field calculation model is arranged in an axisymmetric manner.

[0026] A model adjustment device, comprising:

[0027] A model building module, configured to build a reference electric field calculation model of a preset voltage amplitude; the preset voltage amplitude is less than a specified voltage value;

[0028] A parameter determination module, used to determine reference performance parameters of the reference electric field calculation model;

[0029] An adjustment module is used to adjust the model structure of the reference electric field calculation model based on the difference data between the reference performance parameters and the target performance parameters of the valve-side outlet device corresponding to the specified voltage value, until a reference electric field calculation model is obtained in which the difference value between the new reference performance parameters and the target performance parameters meets the preset difference range; the reference electric field calculation model is used as reference data for constructing an equivalent device of the valve-side outlet device corresponding to the specified voltage value.

[0030] An electronic device comprising at least one processor and a memory connected to the processor, wherein:

[0031] The memory is used to store computer programs;

[0032] The processor is configured to execute the computer program so as to enable the electronic device to implement the above-mentioned model adjustment method.

[0033] A computer storage medium carries one or more computer programs. When the one or more computer programs are executed by an electronic device, the electronic device can implement the above-mentioned model adjustment method.

[0034] The present application provides a model adjustment method and related apparatus. In this application, a preset voltage amplitude less than a specified voltage value, such as an ultra-high voltage (UHV) voltage value, is set. A reference electric field calculation model for the preset voltage amplitude is constructed, and reference performance parameters of the reference electric field calculation model are determined. Based on the difference between the reference performance parameters and the target performance parameters of the valve-side outlet device corresponding to the specified voltage value, the model structure of the reference electric field calculation model is adjusted until a new reference electric field calculation model is obtained in which the difference between the reference performance parameters and the target performance parameters falls within a preset difference range. Because the reference electric field calculation model in the present invention has similar performance parameters to the UHV valve-side outlet device, when the reference electric field calculation model is used to construct the valve-side outlet device, the resulting device has similar performance to the UHV valve-side outlet device and can be used as an equivalent device for the UHV valve-side outlet device, replacing the UHV valve-side outlet device for subsequent testing. Because the preset voltage amplitude in the present invention is less than the UHV, the corresponding actual device will have a smaller structural scale than the UHV valve-side outlet device and a relatively simple structure, thereby reducing the cost and floor space required for subsequent testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments or related technical descriptions. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without any creative work.

[0036] Figure 1 A flow chart of a model adjustment method provided by an embodiment of the present invention;

[0037] Figure 2 A schematic diagram of a reference electric field calculation model provided by an embodiment of the present invention;

[0038] Figure 3 A flow chart of a parameter determination method provided by an embodiment of the present invention;

[0039] Figure 4 A data schematic diagram provided for an embodiment of the present invention;

[0040] Figure 5 A flowchart of a method for adjusting a model provided by an embodiment of the present invention;

[0041] Figure 6 A schematic diagram of an equivalent device provided by an embodiment of the present invention;

[0042] Figure 7 A schematic structural diagram of a model adjustment device provided by an embodiment of the present invention;

[0043] Figure 8 A schematic structural diagram of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0045] In modern power systems, high-voltage power transmission is crucial for ensuring efficiency and reliability. Ultra-high voltage (UHV) (e.g., ±800kV-±1100kV), a specialized HVDC transmission technology, offers unique advantages in energy transmission. UHV plays a crucial role in energy transmission and supply and is widely used in large-scale HVDC transmission projects. High-voltage DC technology offers advantages such as low loss, long-distance transmission, and cost savings for long-distance, high-capacity energy transmission. This technology is often used to connect energy centers and terminals across regions and countries to meet growing electricity demand. It helps address power loss and grid stability issues in traditional AC transmission systems and promotes the development of the Energy Internet.

[0046] While UHV offers numerous advantages, it also presents challenges. UHV places extremely high demands on equipment and insulation materials, requiring significant investment in both construction and maintenance. The insulation structure of the UHV valve-side outlet device is particularly crucial within UHV voltage structures, necessitating detailed structural analysis and quantitative calculations. Due to the device's size, an equivalent device is urgently needed for subsequent testing. Therefore, determining an equivalent device for a UHV valve-side outlet device is a pressing technical challenge facing those skilled in the art.

[0047] To this end, research has revealed that the smaller the voltage value, the simpler and smaller the corresponding structure. Therefore, a low-voltage valve-side outlet device can be used as an equivalent device to the UHV valve-side outlet device for subsequent testing. In this embodiment, analysis revealed that the cost and footprint of low-voltage (e.g., ±100kV-±500kV) valve-side outlet devices are more suitable for practical needs. Therefore, a low-voltage valve-side outlet device can be used as an equivalent device to the UHV valve-side outlet device. Furthermore, any valve-side outlet device with a voltage lower than UHV, such as ±100kV, ±300kV, ±400kV, ±500kV, and so on, such as ±700kV, can serve as an equivalent device. The subsequent embodiments use a low-voltage valve-side outlet device as an example to illustrate the subsequent solutions.

[0048] After determining the low-voltage valve-side outlet device as an equivalent device, it is necessary to adjust the structure of the low-voltage valve-side outlet device so that its performance is comparable to that of the ultra-high voltage valve-side outlet device, with similar insulation safety margins in the high field strength area of ​​the AC electric field and similar maximum field strength values ​​of the DC electric field. In this way, the low-voltage valve-side outlet device can be used to replace the ultra-high voltage valve-side outlet device to carry out relevant hidden defect test verification.

[0049] Based on the above content, an embodiment of the present invention provides a model adjustment method, and the execution subject can be an electronic device such as a processor, a controller, or a server.

[0050] Reference Figure 1 , a model adjustment method may include:

[0051] S11. Construct a reference electric field calculation model with a preset voltage amplitude.

[0052] Among them, the preset voltage amplitude is smaller than the specified voltage value. Generally speaking, the specified voltage value is ultra-high voltage (such as ±800kV-±1100kV), and the preset voltage amplitude can be any voltage smaller than ultra-high voltage, such as low voltage (such as ±100kV-±500kV).

[0053] In order to use the low-voltage valve-side outlet device as an equivalent device to the ultra-high voltage valve-side outlet device, it is necessary to adjust the structure of the low-voltage valve-side outlet device so that its insulation safety margin in the high field strength area of ​​the DC electric field is similar to that of the ultra-high voltage valve-side outlet device, and the maximum field strength value of the DC electric field is similar.

[0054] In order to facilitate structural adjustment, the electric field model can be established by simulation, and specifically, finite element electric field simulation analysis can be used.

[0055] For the low voltage valve side outlet device used in actual scenarios, finite element simulation is performed on it to obtain its corresponding reference electric field calculation model. In addition, the reference electric field calculation model can also be obtained by manual drawing. The structure of the constructed reference electric field calculation model can be referred to Figure 2 In order to facilitate simulation, reduce the amount of calculation and reduce the number of subdivision units, the structure in the reference electric field calculation model adopts an axisymmetric setting to simplify the workload during simulation.

[0056] S12. Determine reference performance parameters of the reference electric field calculation model.

[0057] In this embodiment, since it is necessary to make the insulation safety margins of the DC electric field high field strength areas of the low voltage valve side outlet device and the ultra-high voltage valve side outlet device similar, the maximum DC electric field strength values ​​are similar.

[0058] Therefore, in this embodiment, the reference performance parameters include the AC electric field safety margin and the DC maximum field strength, which can be calculated using the reference electric field calculation model obtained by simulation.

[0059] S13. Based on the difference data between the reference performance parameters and the target performance parameters of the valve-side outlet device corresponding to the specified voltage value, the model structure of the reference electric field calculation model is adjusted until a reference electric field calculation model is obtained in which the difference value between the new reference performance parameters and the target performance parameters meets the preset difference range.

[0060] Since the actual structures of the low-voltage valve-side outlet device and the ultra-high-voltage valve-side outlet device are different, the AC electric field safety margin and the DC maximum field strength corresponding to the low-voltage valve-side outlet device and the ultra-high-voltage valve-side outlet device may also be different. In order to simulate the ultra-high-voltage valve-side outlet device, it is necessary to structurally improve the low-voltage valve-side outlet device so that the AC electric field safety margin and the DC maximum field strength of the two are similar, so that subsequent hidden defect test verification can be carried out.

[0061] In an embodiment of the present invention, when adjusting the structure of a low-voltage valve-side outlet device, new reference performance parameters can be calculated after the adjustment. These parameters are then compared with the target performance parameters of the UHV valve-side outlet device (including the AC electric field safety margin and the maximum DC field strength). If there is still a significant difference between the two, the next adjustment can be performed. If the difference is small, it indicates that the AC electric field safety margin and the maximum DC field strength of the low-voltage valve-side outlet device are similar to those of the UHV valve-side outlet device, and the low-voltage valve-side outlet device can be used as an equivalent device to the UHV valve-side outlet device.

[0062] At this time, the reference electric field calculation model can be used as reference data for constructing an equivalent device of the valve side outlet device corresponding to the specified voltage value, and an equivalent device with the same structure as the reference electric field calculation model can be constructed, and the equivalent device can be used for subsequent hidden defect test verification.

[0063] In this embodiment, for a specified voltage value, such as UHV, a preset voltage amplitude is set that is less than this voltage value. A reference electric field calculation model for the preset voltage amplitude is constructed, and reference performance parameters of the reference electric field calculation model are determined. Based on the difference data between the reference performance parameters and the target performance parameters of the valve-side outlet device corresponding to the specified voltage value, the model structure of the reference electric field calculation model is adjusted until a reference electric field calculation model is obtained in which the difference between the new reference performance parameters and the target performance parameters falls within a preset difference range. Because the reference electric field calculation model in the present invention has similar performance parameters to the UHV valve-side outlet device, when the reference electric field calculation model is used to construct the valve-side outlet device, the resulting device has similar performance to the UHV valve-side outlet device and can be used as an equivalent device for the UHV valve-side outlet device, replacing the UHV valve-side outlet device for subsequent testing. Because the preset voltage amplitude in the present invention is less than UHV, the corresponding actual device will have a smaller structural scale than the UHV valve-side outlet device and a relatively simple structure, thereby reducing the cost and floor space required for subsequent testing.

[0064] The above embodiment mentions determining the reference performance parameters of the reference electric field calculation model, which includes the following steps when specifically implemented:

[0065] S21. Determine parameter information of the reference electric field calculation model.

[0066] The parameter information includes assigned voltage and material parameters.

[0067] In this embodiment, in order to improve safety, the assigned voltage of the reference electric field calculation model is set so as not to exceed the bushing performance parameters.

[0068] Specifically, the assigned voltage refers to Table 1, which is:

[0069] Table 1

[0070]

[0071] In the 1-hour power frequency withstand scenario, the maximum AC voltage of the bushing performance parameter is 309, so the assigned voltage is 364, which is equivalent to 1-minute power frequency. In the 2-hour DC withstand scenario, the maximum assigned voltage is 364. In the polarity reversal scenario, the maximum assigned voltage is 211.

[0072] Material parameters can be configured according to actual needs. Please refer to Table 2 for details.

[0073] Table 2

[0074]

[0075] The dielectric constant of the oil is 2.2, and the resistivity is 1e+13. The dielectric constants and resistivities of the insulating cardboard and capacitor core are shown in Table 2.

[0076] S22. Determine reference performance parameters of the reference electric field calculation model using the parameter information.

[0077] The reference performance parameters include the AC electric field safety margin and the DC maximum field strength. In this embodiment, the AC electric field safety margin and the DC maximum field strength refer to maximum values, i.e., the maximum value of the AC electric field safety margin and the maximum DC maximum field strength.

[0078] In practical applications, parameter information is input into finite element simulation software as the basis for subsequent data calculations.

[0079] After setting the material parameters, if the assigned voltage is set to 364 kV at 1 min power frequency, we can get Figure 4 The AC field voltage distribution cloud diagram (a) and the AC field strength cloud diagram (b) are shown in the figure. By setting the assigned voltage to 364 kV under the 2h power frequency withstand condition, we can obtain Figure 4 c) DC field voltage distribution cloud diagram, and d) DC field strength cloud diagram. Other parameter settings are configured according to actual needs.

[0080] The AC field voltage distribution cloud map and the DC field voltage distribution cloud map in the embodiment of the present invention are the voltage distribution cloud maps in the embodiment of the present invention, and the AC field strength cloud map and the DC field strength cloud map are the field strength cloud maps in the embodiment of the present invention.

[0081] Subsequently, the AC electric field safety margin and the DC maximum field strength can be calculated based on the voltage distribution cloud map and the field strength cloud map.

[0082] Specifically, the voltage distribution cloud map and the field strength cloud map can be used to perform numerical calculations to obtain the AC electric field safety margin and the DC maximum field strength.

[0083] After obtaining the AC electric field safety margin and the DC maximum field strength, these two parameters can be used to analyze whether the current model structure is reasonable. If it is unreasonable, the model can be adjusted.

[0084] Specifically, refer to Figure 5 Adjusting the model structure of the reference electric field calculation model based on the difference data between the reference performance parameter and the target performance parameter of the valve-side outlet device corresponding to the specified voltage value may include:

[0085] S31. Obtain target performance parameters of the valve-side outlet device corresponding to the specified voltage value.

[0086] In this embodiment, if there is an actual device with a UHV valve-side outlet device, the target performance parameters of the device can be directly obtained. The target performance parameters include the AC electric field safety margin and the DC maximum field strength.

[0087] If there is no actual device of the UHV valve side outlet device, the AC electric field safety margin and the DC maximum field strength of the UHV valve side outlet device can be obtained by simulation.

[0088] Specifically, a simulation model of the valve-side outlet device corresponding to the specified voltage value is constructed, and the target performance parameters of the valve-side outlet device corresponding to the specified voltage value are obtained using the simulation model.

[0089] To elaborate, the specific implementation of constructing the simulation model corresponding to the UHV valve-side outlet device is the same as the simulation process of the reference electric field calculation model corresponding to the above-mentioned low-voltage valve-side outlet device.

[0090] After obtaining the simulation model, the simulation model is used to obtain the target performance parameters of the valve side outlet device corresponding to the specified voltage value. The implementation process is the same as the parameter determination process of the reference electric field calculation model corresponding to the low voltage valve side outlet device mentioned above.

[0091] S32: Calculate the difference between the reference performance parameter and the target performance parameter.

[0092] Specifically, by calculating the difference between the reference performance parameter and the target performance parameter, the degree of difference between the two parameters can be obtained. In addition, the relative change rate of the reference performance parameter and the target performance parameter can also be calculated, such as (reference performance parameter-target performance parameter) / target performance parameter.

[0093] Since the reference performance parameters and the target performance parameters include both the AC electric field safety margin and the DC maximum field strength, when calculating the degree of difference, the degree of difference is calculated for each parameter separately.

[0094] That is, the difference or relative rate of change corresponding to the AC electric field safety margin is calculated, as well as the difference or relative rate of change corresponding to the DC maximum field strength is calculated.

[0095] S33: If the difference is greater than a preset threshold, adjust the specified model component of the reference electric field calculation model.

[0096] Specifically, the preset threshold is configured based on the actual scenario. If the difference is greater than the preset threshold or the relative change rate is greater than the preset change rate, it indicates that the AC electric field safety margin and / or DC maximum field strength of the low-voltage valve-side outlet device and the ultra-high voltage valve-side outlet device are significantly different.

[0097] For example, if the AC electric field safety margins of a low-voltage valve-side outlet device and a UHV valve-side outlet device differ significantly, this indicates that the AC electric field safety margins of the low-voltage valve-side outlet device and the UHV valve-side outlet device are different, and the low-voltage valve-side outlet device cannot be regarded as equivalent to the UHV valve-side outlet device. The maximum DC field strength is similar.

[0098] When at least one of the AC electric field safety margin and the DC maximum field strength differs significantly, it indicates that the structure of the reference electric field calculation model corresponding to the low-voltage valve-side outlet device cannot be equivalent to the structure of the ultra-high voltage valve-side outlet device, and the specified model components of the reference electric field calculation model need to be adjusted.

[0099] During the adjustment operation, it was found through analysis that the insulation structure and the oil channel chamfer will affect the AC electric field safety margin and the value of the DC maximum field strength. Therefore, at least one of the insulation structure and the oil channel chamfer of the reference electric field calculation model can be adjusted to adjust the AC electric field safety margin and the value of the DC maximum field strength of the reference electric field calculation model.

[0100] The insulating structure includes at least one of an insulating shape and the number of insulating layers.

[0101] Specifically, when the difference in the value of at least one of the AC electric field safety margin and the DC maximum field strength is too large, at least one of the insulation shape, the number of insulation layers, and the oil channel chamfer may be adjusted.

[0102] For example, the insulation shape can be adjusted to be more curved, the number of insulation layers can be adjusted to be more or less, and the angle of the oil channel chamfer can be adjusted.

[0103] During specific adjustments, multiple components may be adjusted simultaneously, such as the insulation shape, the number of insulation layers, and the oil channel chamfer, or one or more of the insulation shape, the number of insulation layers, and the oil channel chamfer may be adjusted simultaneously.

[0104] During specific adjustments, we can first determine the parameters with larger differences, that is, the parameters whose differences are greater than the preset threshold, and then determine the related components. For example, the insulation shape and the number of insulation layers mainly affect the AC electric field safety margin. In this case, we can adjust the insulation shape and the number of insulation layers when the AC electric field safety margin differs greatly.

[0105] During specific adjustments, the adjustments can be made based on rule settings. For example, compared with the UHV valve side outlet device, the AC electric field safety margin of the low-voltage valve side outlet device is smaller. In this case, the number of insulation layers can be increased to enhance the value of the AC electric field safety margin. The rest of the adjustment process is similar.

[0106] In this embodiment, after one adjustment, a new reference electric field calculation model is obtained, and the reference performance parameters of the model are calculated and compared with the target performance parameters of the valve-side outlet device corresponding to the specified voltage value. If there is still a large difference, adjustment is continued until the difference between the two is less than the preset threshold, or the relative change rate is less than the preset change rate, and the adjustment is stopped.

[0107] After adjustment, the reference electric field calculation model was used for comparison with the AC electric field safety margin and DC maximum field strength of the UHV valve-side outlet device. The comparison showed that the AC electric field safety margins of the two outlet devices were similar, both around 1.3 times, and the DC maximum field strength was similar at approximately 33 kV / mm, meeting the equivalence of the two outlet devices. See Table 3 for details:

[0108] Table 3: Comparison of insulation margin and field strength between UHV valve-side outlet devices and LV valve-side outlet devices

[0109]

[0110] Subsequently, the physical valve side outlet device is constructed according to the final reference electric field calculation model. The structure of the constructed valve side outlet device is as follows: Figure 6 The valve side outlet device consists of a low voltage valve side bushing 1, an insulated outlet device 2, an outlet device housing 3 and a support structure 4. The specific connection structure is as follows Figure 6 shown.

[0111] Figure 6 The valve-side outlet device shown can serve as a scaled-down model outlet device structure or equivalent device for UHV valve-side outlet devices. Subsequent hidden defect testing and verification using this physical device can be used as the hidden defect testing and verification results for UHV valve-side outlet devices.

[0112] In this embodiment, the AC and DC electric field safety margins and the DC electric field maximum values ​​of the simulation model of the low-voltage valve side outlet device are compared with those of the ultra-high voltage valve side outlet device. When the AC and DC electric field safety margins and the DC maximum field strength values ​​are similar, an equivalent study can be carried out, and the low-voltage valve side outlet device is used as an equivalent device to the ultra-high voltage valve side outlet device. Since the structural scale of the low-voltage valve side outlet device will be smaller than the structural scale of the ultra-high voltage valve side outlet device, the structure will also be relatively simple. Therefore, in this embodiment, the ultra-high voltage valve side outlet device is equivalent to the low-voltage valve side outlet device to carry out relevant hidden defect test verification, which will reduce costs and floor space, meet engineering design requirements, reduce indirect economic losses, and avoid the problem that when using the ultra-high voltage valve side outlet device for hidden defect test verification research, it is difficult to carry out relevant hidden defect test verification research due to the high voltage and complex structure.

[0113] In addition, the present invention has a simple structure and its design concept can be used not only for the research on the valve-side outlet device of the converter transformer, but also for the research on the model scheme of the outlet device of the high-voltage AC transformer, and has a wide range of applicable scenarios.

[0114] Based on the embodiment of the above-mentioned model adjustment method, another embodiment of the present invention provides a model adjustment device, referring to Figure 7 , which may include:

[0115] A model building module 11 is used to build a reference electric field calculation model of a preset voltage amplitude; the preset voltage amplitude is less than a specified voltage value;

[0116] A parameter determination module 12 is used to determine reference performance parameters of the reference electric field calculation model;

[0117] An adjustment module 13 is configured to adjust the model structure of the reference electric field calculation model based on the difference data between the reference performance parameters and the target performance parameters of the valve-side outlet device corresponding to the specified voltage value, until a reference electric field calculation model is obtained in which the difference values ​​between the new reference performance parameters and the target performance parameters satisfy a preset difference range; the reference electric field calculation model serves as reference data for constructing an equivalent device of the valve-side outlet device corresponding to the specified voltage value.

[0118] In one implementation, the parameter determination module 12 includes:

[0119] A first determination submodule is configured to determine parameter information of the reference electric field calculation model; the parameter information includes an assigned voltage and material parameters;

[0120] The second determining submodule is used to determine reference performance parameters of the reference electric field calculation model using the parameter information; the reference performance parameters include an AC electric field safety margin and a DC maximum field strength.

[0121] In one implementation, the second determining submodule is specifically configured to:

[0122] The parameter information is used to determine a voltage distribution cloud map and a field strength cloud map, and the AC electric field safety margin and the DC maximum field strength are calculated based on the voltage distribution cloud map and the field strength cloud map.

[0123] In one implementation, the adjustment module 13 includes:

[0124] A parameter acquisition submodule, configured to acquire target performance parameters of the valve-side outlet device corresponding to the specified voltage value;

[0125] A difference calculation submodule, configured to calculate the difference between the reference performance parameter and the target performance parameter;

[0126] The adjustment submodule is configured to adjust a specified model component of the reference electric field calculation model if the difference is greater than a preset threshold.

[0127] In one implementation, the parameter acquisition submodule is specifically used to:

[0128] A simulation model of the valve-side outlet device corresponding to the specified voltage value is constructed, and target performance parameters of the valve-side outlet device corresponding to the specified voltage value are obtained using the simulation model.

[0129] In one implementation, the adjustment submodule is specifically configured to:

[0130] At least one of the insulation structure and the oil channel chamfer of the reference electric field calculation model is adjusted; the insulation structure includes: at least one of the insulation shape and the number of insulation layers.

[0131] In one implementation, the structure in the reference electric field calculation model is arranged in an axisymmetric manner.

[0132] In this embodiment, for a specified voltage value, such as UHV, a preset voltage amplitude is set that is less than this voltage value. A reference electric field calculation model for the preset voltage amplitude is constructed, and reference performance parameters of the reference electric field calculation model are determined. Based on the difference data between the reference performance parameters and the target performance parameters of the valve-side outlet device corresponding to the specified voltage value, the model structure of the reference electric field calculation model is adjusted until a reference electric field calculation model is obtained in which the difference between the new reference performance parameters and the target performance parameters falls within a preset difference range. Because the reference electric field calculation model in the present invention has similar performance parameters to the UHV valve-side outlet device, when the reference electric field calculation model is used to construct the valve-side outlet device, the resulting device has similar performance to the UHV valve-side outlet device and can be used as an equivalent device for the UHV valve-side outlet device, replacing the UHV valve-side outlet device for subsequent testing. Because the preset voltage amplitude in the present invention is less than UHV, the corresponding actual device will have a smaller structural scale than the UHV valve-side outlet device and a relatively simple structure, thereby reducing the cost and floor space required for subsequent testing.

[0133] It should be noted that, for the working process of each module and sub-module in the embodiment of the present invention, please refer to the corresponding description in the above embodiment, and no further details will be given here.

[0134] An embodiment of the present application further provides an electronic device, including at least one processor and a memory connected to the processor, wherein:

[0135] The memory is used to store computer programs;

[0136] The processor is configured to execute the computer program so as to enable the electronic device to implement the above-mentioned model adjustment method.

[0137] refer to Figure 8 , which shows a schematic diagram of the structure of an electronic device suitable for implementing the embodiments of the present application. The electronic device in the embodiments of the present application may include, but is not limited to, fixed terminals such as mobile phones, laptops, PDAs (personal digital assistants), PADs (tablet computers), desktop computers, etc. Figure 8 The electronic device shown is merely an example and should not limit the functions and scope of use of the embodiments of the present application.

[0138] like Figure 8As shown, the electronic device may include a processing device (e.g., a central processing unit, a graphics processing unit, etc.) 601, which can perform various appropriate actions and processes based on programs stored in a read-only memory (ROM) 602 or programs loaded from a storage device 608 into a random access memory (RAM) 603. When the electronic device is powered on, the RAM 603 also stores various programs and data required for the operation of the electronic device. The processing device 601, ROM 602, and RAM 603 are interconnected via a bus 604. An input / output (I / O) interface 605 is also connected to the bus 604.

[0139] Typically, the following devices may be connected to the I / O interface 605: an input device 606 including, for example, a touch screen, a touchpad, a keyboard, a mouse, a camera, a microphone, an accelerometer, a gyroscope, etc.; an output device 607 including, for example, a liquid crystal display (LCD), a speaker, a vibrator, etc.; a storage device 608 including, for example, a memory card, a hard disk, etc.; and a communication device 609. The communication device 609 may allow the electronic device to communicate with other devices wirelessly or by wire to exchange data. Figure 8 The electronic device is shown with various devices, but it should be understood that it is not required to implement or possess all of the devices shown. More or fewer devices may be implemented or possessed instead.

[0140] An embodiment of the present application also provides a computer program product including computer-readable instructions. When the computer-readable instructions are executed on an electronic device, the electronic device implements any one of the model adjustment methods provided in the embodiments of the present application.

[0141] A computer-readable storage medium is also provided in an embodiment of the present application. The storage medium carries one or more computer programs. When the one or more computer programs are executed by an electronic device, the electronic device can implement any model adjustment method provided in the embodiment of the present application.

[0142] The above description of the disclosed embodiments is intended to enable one skilled in the art to implement or use the present application. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A model adjustment method, characterized in that: include: Construct a reference electric field calculation model for the valve-side outlet device with a preset voltage amplitude; The preset voltage amplitude is less than the specified voltage value; The smaller the voltage value, the simpler the structure of the valve side outlet device and the smaller the scale of the structure; Determining reference performance parameters of the reference electric field calculation model; The reference performance parameters include AC electric field safety margin and DC maximum field strength; Determining reference performance parameters of the reference electric field calculation model includes: determining parameter information of the reference electric field calculation model; the parameter information includes an assigned voltage and material parameters; setting the assigned voltage according to the principle of not exceeding the bushing performance parameters; inputting the parameter information into finite element simulation software to obtain a voltage distribution cloud map and a field strength cloud map; and using the voltage distribution cloud map and the field strength cloud map to obtain an AC electric field safety margin and a DC maximum field strength; Based on the difference data between the reference performance parameters and the target performance parameters of the valve-side outlet device corresponding to the specified voltage value, the model structure of the reference electric field calculation model is adjusted until a reference electric field calculation model is obtained in which the difference value between the new reference performance parameters and the target performance parameters meets the preset difference range; the physical valve-side outlet device corresponding to the reference electric field calculation model is used as an equivalent device of the valve-side outlet device corresponding to the specified voltage value to perform hidden defect test verification; the model structure of the reference electric field calculation model is adjusted, including: determining the parameters of the AC electric field safety margin and the DC maximum field strength, whose difference values ​​do not meet the preset difference range, determining the components related to the parameters, and adjusting the components, wherein the components include at least one of the insulation shape, the number of insulation layers, and the oil channel chamfer.

2. The model adjustment method according to claim 1, characterized in that: Adjusting the model structure of the reference electric field calculation model based on difference data between the reference performance parameter and the target performance parameter of the valve-side outlet device corresponding to the specified voltage value includes: Obtaining target performance parameters of the valve-side outlet device corresponding to the specified voltage value; Calculating a difference between the reference performance parameter and the target performance parameter; If the difference is greater than a preset threshold, an adjustment operation is performed on a designated model component of the reference electric field calculation model.

3. The model adjustment method according to claim 2, characterized in that: Obtaining target performance parameters of the valve-side outlet device corresponding to the specified voltage value includes: Constructing a simulation model of the valve-side outlet device corresponding to the specified voltage value; The simulation model is used to obtain target performance parameters of the valve-side outlet device corresponding to the specified voltage value.

4. The model adjustment method according to claim 2, characterized in that: The step of adjusting a specified model component of the reference electric field calculation model includes: At least one of the insulation structure and the oil channel chamfer of the reference electric field calculation model is adjusted; the insulation structure includes: at least one of the insulation shape and the number of insulation layers.

5. The model adjustment method according to claim 1, characterized in that: The structure in the reference electric field calculation model is arranged in an axisymmetric manner.

6. A model adjustment device, characterized in that: include: A model building module, used to build a reference electric field calculation model of the valve-side outlet device with a preset voltage amplitude; The preset voltage amplitude is less than the specified voltage value; The smaller the voltage value, the simpler the structure of the valve side outlet device and the smaller the scale of the structure; A parameter determination module, used to determine reference performance parameters of the reference electric field calculation model; The reference performance parameters include AC electric field safety margin and DC maximum field strength; Determining reference performance parameters of the reference electric field calculation model includes: determining parameter information of the reference electric field calculation model; the parameter information includes an assigned voltage and material parameters; setting the assigned voltage according to the principle of not exceeding the bushing performance parameters; inputting the parameter information into finite element simulation software to obtain a voltage distribution cloud map and a field strength cloud map; and using the voltage distribution cloud map and the field strength cloud map to obtain an AC electric field safety margin and a DC maximum field strength; An adjustment module is used to adjust the model structure of the reference electric field calculation model based on the difference data between the reference performance parameters and the target performance parameters of the valve side outlet device corresponding to the specified voltage value, until a reference electric field calculation model is obtained in which the difference value between the new reference performance parameters and the target performance parameters meets the preset difference range; the physical valve side outlet device corresponding to the reference electric field calculation model is used as an equivalent device of the valve side outlet device corresponding to the specified voltage value to perform hidden defect test verification; the model structure of the reference electric field calculation model is adjusted, including: determining the parameters of the AC electric field safety margin and the DC maximum field strength, whose difference values ​​do not meet the preset difference range, determining the components related to the parameters, and adjusting the components, wherein the components include at least one of the insulation shape, the number of insulation layers, and the oil channel chamfer.

7. An electronic device, characterized in that: comprising at least one processor and a memory connected to the processor, wherein: The memory is used to store computer programs; The processor is configured to execute the computer program so as to enable the electronic device to implement the model adjustment method according to any one of claims 1 to 5.

8. A computer storage medium, characterized in that The storage medium carries one or more computer programs, and when the one or more computer programs are executed by an electronic device, the electronic device can implement the model adjustment method according to any one of claims 1 to 5.

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