Model adjustment method and related device

Abstract

The invention provides a model adjustment method and a related device, and relates to the field of valve side wire outlet devices. For a specified voltage value, such as an extra-high voltage value, a preset voltage amplitude smaller than the voltage value is set, a reference electric field calculation model of the preset voltage amplitude is constructed, a reference performance parameter of the model is determined, and based on difference data of the reference performance parameter and a target performance parameter of the valve side wire outlet device corresponding to the specified voltage value, the valve side wire outlet device is calculated. And adjusting the model structure of the reference electric field calculation model until the reference electric field calculation model meeting the preset difference range requirement is obtained. The performance parameters of the reference electric field calculation model are similar to those of the extra-high-voltage valve side wire outlet device, so that when the reference electric field calculation model is used for constructing the valve side wire outlet device, the obtained device can serve as an equivalent device of the extra-high-voltage valve side wire outlet device to replace the extra-high-voltage valve side wire outlet device for subsequent test work, and the test efficiency is improved. And the subsequent test cost and the occupied area can be reduced.

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 an important link to ensure power transmission efficiency and reliability. As a special high-voltage direct current transmission technology, ultra-high voltage (such as ±800kV-±1100kV) has unique advantages in energy transmission. Ultra-high voltage plays an important role in energy transmission and supply, and it is widely used in large-scale high-voltage direct current transmission projects. The use of high-voltage direct current technology for long-distance and large-capacity energy transmission has the advantages of low loss, long-distance transmission, and cost savings.

[0003] Although UHV voltage brings many advantages, there are also some problems and challenges. UHV voltage has very high requirements for equipment and insulation materials, and requires huge investment in construction and maintenance. In the UHV voltage structure, the insulation structure of the UHV valve side outlet device is particularly important, and detailed structural analysis and quantitative calculation are imperative. Since the UHV valve side outlet device has a large structure, it is urgent to find an equivalent device that can be equivalent to the device for subsequent testing. So how to determine the equivalent device of the UHV valve side outlet device is a technical problem that technicians in this field need to solve urgently. 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 UHV valve side outlet device.

[0005] In order 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 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.

[0010] Optionally, determining a reference performance parameter 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 alternating current electric field safety margin and a direct current maximum field strength.

[0013] Optionally, using the parameter information to determine a reference performance parameter 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, 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, adjusting the model structure of the reference electric field calculation model 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, performing an adjustment operation on 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, 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;

[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 satisfies a 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 comprises 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 used to execute the computer program so that the electronic device can 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 devices. In the present application, for a specified voltage value, such as an ultra-high voltage voltage value, a preset voltage amplitude less than the voltage value is set, a reference electric field calculation model of the preset voltage amplitude is constructed, and a reference performance parameter of the reference electric field calculation model is determined. 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, the model structure of the reference electric field calculation model is adjusted until a reference electric field calculation model whose difference value between the new reference performance parameter and the target performance parameter satisfies the preset difference range is obtained. Since the reference electric field calculation model in the present invention 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 has similar performance to the ultra-high voltage valve side outlet device, and 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. Since the preset voltage amplitude in the present invention is less than the ultra-high voltage, the structural scale of the corresponding actual device will be smaller than the structural scale of the ultra-high voltage valve side outlet device, and the structure will also be relatively simple, thereby reducing the cost and floor space of 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 the related technologies, the drawings required for use in the embodiments or the related technical descriptions are briefly introduced below. 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 paying 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 method for determining parameters 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 flow chart 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 diagram of the structure of a model adjustment device provided by an embodiment of the present invention;

[0043] Figure 8 A schematic diagram of the structure 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 the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0045] In modern power systems, high-voltage power transmission is an important link to ensure the efficiency and reliability of power transmission. As a special high-voltage direct current transmission technology, ultra-high voltage (such as ±800kV-±1100kV) has unique advantages in energy transmission. Ultra-high voltage plays an important role in the field of energy transmission and supply, and it is widely used in large-scale high-voltage direct current transmission projects. The use of high-voltage direct current technology for long-distance and large-capacity energy transmission has the advantages of low loss, long-distance transmission, and cost savings. This technology is often used to connect energy centers and terminals between different regions and countries to meet the growing demand for electricity. It helps to solve the problems of power loss and grid stability in traditional AC transmission systems and promote the development of energy Internet.

[0046] Although UHV voltage brings many advantages, there are also some problems and challenges. UHV voltage has very high requirements for equipment and insulation materials, and requires huge investment in construction and maintenance. In the UHV voltage structure, the insulation structure of the UHV valve side outlet device is particularly important, and detailed structural analysis and quantitative calculation are imperative. Since the UHV valve side outlet device has a large structure, it is urgent to find an equivalent device that can be equivalent to the device for subsequent testing. So how to determine the equivalent device of the UHV valve side outlet device is a technical problem that technicians in this field need to solve urgently.

[0047] To this end, after research, it was found that the smaller the voltage value, the simpler the corresponding structure and the smaller the scale of the 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, after analysis, the cost and floor space of a low-voltage (such as ±100kV-±500kV) valve-side outlet device are more suitable for actual needs. Therefore, a low-voltage valve-side outlet device can be used as an equivalent device to the UHV valve-side outlet device. In addition, as long as it is a valve-side outlet device less than UHV, such as ±100kV, ±300kV, ±400kV, ±500kV...such as ±700kV, etc., it can be used as an equivalent device. The subsequent embodiments take the low-voltage valve-side outlet device as an equivalent device as an example to illustrate the subsequent scheme.

[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. Then, 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, and a server.

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

[0051] S11, constructing 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 the 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 high field strength areas of the DC electric field of the low voltage valve side outlet device and the ultra-high voltage valve side outlet device similar, the maximum field strength values ​​of the DC electric field are similar.

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

[0059] S13. 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, 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 parameter and the target performance parameter satisfies a 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 improve the structure of 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 the embodiment of the present invention, when the structure of the low-voltage valve-side outlet device is adjusted, a new reference performance parameter can be calculated after the structure is adjusted once, and then compared with the target performance parameter of the ultra-high voltage valve-side outlet device (including the AC electric field safety margin and the DC maximum field strength). If the difference between the two is still large, the next adjustment is continued. If the difference between the two is small, it means that the AC electric field safety margin and the DC maximum field strength of the low-voltage valve-side outlet device are similar to those of the ultra-high voltage valve-side outlet device, and the low-voltage valve-side outlet device can be used as an equivalent device to the ultra-high voltage 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 ultra-high voltage, a preset voltage amplitude less than the voltage value is set, a reference electric field calculation model of the preset voltage amplitude is constructed, a reference performance parameter of the reference electric field calculation model is determined, and 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, 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 parameter and the target performance parameter satisfies the preset difference range. Since the reference electric field calculation model in the present invention 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 has similar performance to the ultra-high voltage valve side outlet device, and 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. Since the preset voltage amplitude in the present invention is less than the ultra-high voltage, the structural scale of the corresponding actual device will be smaller than the structural scale of the ultra-high voltage valve side outlet device, and the structure will also be relatively simple, thereby reducing the cost and floor space of 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 being 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 parameter.

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

[0069] Table 1

[0070]

[0071] In the 1h power frequency tolerance scenario, the maximum AC voltage of the bushing performance parameter is 309, and the assigned voltage is equivalent to 364 for 1min power frequency. In the 2h DC tolerance scenario, the maximum assigned voltage is 364, and in the polarity reversal scenario, the maximum assigned voltage is 211.

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

[0073] Table 2

[0074]

[0075] Among them, the dielectric constant of oil is 2.2, the resistivity is 1e+13, and the dielectric constant and resistivity of 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 the maximum values, that is, the maximum value of the AC electric field safety margin and the maximum value of the 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 1min power frequency 364 kV, we can get Figure 4 The AC field voltage distribution cloud diagram (a) and the AC field strength cloud diagram (b) are shown in Fig. 1. By setting the assigned voltage to 364 kV under 2h power frequency withstand, we can get 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 may be calculated according to 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 , 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, adjusting the model structure of the reference electric field calculation model may include:

[0085] S31, obtaining a target performance parameter of the valve-side outlet device corresponding to the specified voltage value.

[0086] In this embodiment, if there is an actual device of the UHV valve-side outlet device, the target performance parameters of the device can be directly obtained, and 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 parameter of the valve-side outlet device corresponding to the specified voltage value is obtained by 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, and the implementation process is the same as the parameter determination process of the reference electric field calculation model corresponding to the above-mentioned low-voltage valve side outlet device.

[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 change rate corresponding to the AC electric field safety margin is calculated, and the difference or relative change rate corresponding to the DC maximum field strength is calculated.

[0095] S33: 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.

[0096] Specifically, the preset threshold is configured according to 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 means that the AC electric field safety margin and / or the DC maximum field strength of the low voltage valve side outlet device and the ultra-high voltage valve side outlet device are greatly different.

[0097] For example, if the AC electric field safety margins of the low-voltage valve-side outlet device and the UHV valve-side outlet device are quite different, it means 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 used as an equivalent device of 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 greatly, it means 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 maximum DC 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 maximum DC field strength of the reference electric field calculation model.

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

[0101] Specifically, when the numerical difference between 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 adjusting the insulation shape, the number of insulation layers, and the oil channel chamfer simultaneously, or one or more of the insulation shape, the number of insulation layers, and the oil channel chamfer may be adjusted.

[0104] During specific adjustments, we can first determine the parameters with a larger degree of difference, that is, the parameters with a difference greater than a 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 based on rule settings. For example, compared with the UHV valve side outlet device, the low voltage valve side outlet device has a smaller AC electric field safety margin. 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 is calculated and used for comparison with the AC electric field safety margin and DC maximum field strength of the UHV valve side outlet device. By comparison, the AC electric field safety margins of the two outlet devices are similar, both about 1.3 times, and the DC maximum field strength is similar to about 33 kV / mm, which meets 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 low-voltage valve-side outlet devices

[0109]

[0110] Subsequently, a 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 is composed of a low voltage valve side bushing 1, an insulating outlet device 2, an outlet device housing 3 and a supporting structure 4. The specific connection structure is as shown in FIG. Figure 6 shown.

[0111] Figure 6 The valve side outlet device shown can be used as a scaled model outlet device structure or an equivalent device of a UHV valve side outlet device. The physical device is subsequently used to perform hidden defect test verification, and the obtained hidden defect test verification results can be used as hidden defect test verification results of the UHV valve side outlet device.

[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 that 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 in the research of the valve-side outlet device of the converter transformer, but also in the research of 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 above-mentioned embodiment of the 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, used to determine reference performance parameters of the reference electric field calculation model;

[0117] The adjustment module 13 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 satisfies a 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.

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

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

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

[0121] In one implementation, the second determining submodule is specifically used for:

[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, used to acquire a target performance parameter of the valve-side outlet device corresponding to the specified voltage value;

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

[0126] The adjustment submodule is used to adjust the 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 for:

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

[0129] In one implementation, the adjustment submodule is specifically used for:

[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 ultra-high voltage, a preset voltage amplitude less than the voltage value is set, a reference electric field calculation model of the preset voltage amplitude is constructed, a reference performance parameter of the reference electric field calculation model is determined, and 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, 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 parameter and the target performance parameter satisfies the preset difference range. Since the reference electric field calculation model in the present invention 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 has similar performance to the ultra-high voltage valve side outlet device, and 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. Since the preset voltage amplitude in the present invention is less than the ultra-high voltage, the structural scale of the corresponding actual device will be smaller than the structural scale of the ultra-high voltage valve side outlet device, and the structure will also be relatively simple, thereby reducing the cost and floor space of 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, which will not be repeated here.

[0134] An embodiment of the present application also 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 used to execute the computer program so that the electronic device can implement the above-mentioned model adjustment method.

[0137] refer to Figure 8 As shown, it shows a schematic diagram of the structure of an electronic device suitable for implementing the embodiment of the present application. The electronic device in the embodiment 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 bring any limitation to 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 according to a program stored in a read-only memory (ROM) 602 or a program loaded from a storage device 608 to a random access memory (RAM) 603. When the electronic device is powered on, various programs and data required for the operation of the electronic device are also stored in the RAM 603. The processing device 601, the ROM 602, and the RAM 603 are connected to each other 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 touch pad, 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. Although Figure 8 An electronic device having various devices is shown, but it should be understood that it is not required to implement or possess all 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 model adjustment method provided in the embodiment 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 enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those 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 will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A model adjustment method, characterized in that: include: Constructing a reference electric field calculation model with a preset voltage amplitude; The preset voltage amplitude is less than the specified voltage value; Determining reference performance parameters 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, adjusting the model structure of the reference electric field calculation model until a reference electric field calculation model is obtained in which the difference value between the new reference performance parameter and the target performance parameter satisfies a 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.

2. The model adjustment method according to claim 1, characterized in that: 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 assigned voltage and material parameters; The parameter information is used to determine reference performance parameters of the reference electric field calculation model; the reference performance parameters include an alternating current electric field safety margin and a direct current maximum field strength.

3. The model adjustment method according to claim 2, characterized in that: Determining reference performance parameters of the reference electric field calculation model using the parameter information includes: Determine a voltage distribution cloud map and a field strength cloud map using the parameter information; 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.

4. The model adjustment method according to claim 1, characterized in that: 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, adjusting the model structure of the reference electric field calculation model 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.

5. The model adjustment method according to claim 4, characterized in that: Obtaining target performance parameters of the valve-side outlet device corresponding to the specified voltage value, including: 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.

6. The model adjustment method according to claim 4, characterized in that: The step of adjusting the specified model component of the reference electric field calculation model comprises: 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.

7. 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.

8. A model adjustment device, characterized in that: include: A model building module, used to build a reference electric field calculation model with a preset voltage amplitude; The preset voltage amplitude is less than the specified voltage value; A parameter determination module, used to determine reference performance parameters of the reference electric field calculation model; an adjustment module, configured to adjust 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, until a reference electric field calculation model is obtained in which the difference value between the new reference performance parameter and the target performance parameter satisfies a 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.

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

10. 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 as described in any one of claims 1 to 7.

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