Transformer structure optimization method, device, computer equipment and transformer

Abstract

The present application relates to a transformer structural optimization method, apparatus, computer equipment, and transformer. This method selects the width of a short-side corrugated sheet based on a preset sheet width range, then determines the sheet height based on the preset surface area of ​​the short-side corrugated sheet. Based on the determined sheet width and height, a corresponding short-side corrugated sheet is determined, and a transformer thermal flow coupling simulation calculation is performed based on the short-side corrugated sheet to determine the average oil temperature and top oil temperature of the transformer. When the obtained average oil temperature is lower than a first preset temperature and / or the obtained top oil temperature is higher than a second preset temperature, the sheet width and height of the short-side corrugated sheet are adjusted to determine a new short-side corrugated sheet. When the average oil temperature obtained based on the short-side corrugated sheet is higher than the first preset temperature and the top oil temperature is lower than the second preset temperature, the transformer structural model is optimized based on the sheet width and height of the short-side corrugated sheet. This method optimizes transformer performance and improves heat dissipation efficiency.

Description

Technical Field

[0001] The present application relates to the technical field of transformer structural optimization, and in particular to a transformer structural optimization method, device, computer equipment, and transformer. Background Art

[0002] Transformers are core components of power systems, primarily used for voltage conversion to ensure efficient transmission and distribution of electrical energy. During operation, current flowing through the transformer's coils generates heat. If left uncontrolled, this heat can cause the equipment to overheat, affecting its performance or shortening its service life.

[0003] Traditionally, transformer heat dissipation has been achieved by installing corrugated sheets in the transformer. However, the current structural optimization of the corrugated sheets relies on historical empirical formulas, rather than precise design of the sheets. As a result, the heat dissipation efficiency of the sheets based on this structural optimization is low. Summary of the Invention

[0004] Based on this, it is necessary to provide a transformer structure optimization method, device, computer equipment and transformer that can improve heat dissipation efficiency in response to the above technical problems.

[0005] In a first aspect, the present application provides a method for optimizing the structure of a transformer, the method comprising:

[0006] According to the preset sheet width range, select the sheet width of the short-side corrugated sheet;

[0007] Determining the height of the short-side corrugated sheet according to the preset surface area and sheet width of the short-side corrugated sheet; wherein the sheet height is less than the height of the transformer oil tank;

[0008] Based on the short-side corrugated sheets determined by the sheet height and sheet width, a thermal-fluid coupling simulation calculation of the transformer is performed to determine the average oil temperature and top oil temperature of the transformer;

[0009] If the average oil temperature is lower than the first preset temperature, and / or the top oil temperature is higher than the second preset temperature, adjust the slice width and slice height until the average oil temperature is higher than the first preset temperature and the top oil temperature is lower than the second preset temperature;

[0010] Optimize the transformer structure model based on the adjusted slice width and slice height;

[0011] The first preset temperature is determined according to the temperature of the environment in which the transformer structure model is running.

[0012] In one embodiment, the step of adjusting the sheet width includes:

[0013] Starting from the boundary value of the preset slice width range, the slice width is adjusted within the preset slice width range with a preset step length as the span.

[0014] In one embodiment, the steps of constructing the transformer structure model include:

[0015] Constructing an initial transformer model, which includes an iron core, an iron core winding, and a transformer tank with short-side corrugated sheets installed;

[0016] The iron core windings that are not embedded in the grooves of the transformer tank are removed to obtain the transformer structure model.

[0017] In one embodiment, the step of removing the core windings that are not embedded in the transformer tank groove to obtain the transformer structure model includes:

[0018] The core windings that are not embedded in the transformer tank groove are removed, and the core windings embedded in the transformer tank groove are simplified into a rectangular parallelepiped to obtain the transformer structure model.

[0019] In one embodiment, the step of determining the average oil temperature of the transformer includes:

[0020] Obtain the top oil temperature and bottom oil temperature of the transformer oil during the transformer structure model simulation operation;

[0021] Determine the average oil temperature based on the top oil temperature and the bottom oil temperature.

[0022] In one embodiment, the step of determining the average oil temperature and the top oil temperature of the transformer includes:

[0023] Based on the finite element thermal flow simulation analysis method, the transformer structure model after adjusting the slice width and slice height is subjected to thermal flow coupling simulation calculation to determine the average oil temperature and the top oil temperature.

[0024] In one embodiment, the method further comprises:

[0025] The temperature distribution curve is determined and displayed based on the average oil temperature and the top oil temperature corresponding to the short-side corrugated sheets of different sheet heights and / or sheet widths.

[0026] In a second aspect, the present application further provides a transformer structure optimization device, the device comprising:

[0027] A sheet width selection module is used to select the sheet width of the short-side corrugated sheet based on a preset sheet width range;

[0028] a sheet height determination module, configured to determine the sheet height of the short-side corrugated sheet according to a preset surface area and sheet width of the short-side corrugated sheet; wherein the sheet height is less than the height of the transformer oil tank;

[0029] The oil temperature calculation module is used to perform heat-flow coupling simulation calculation of the transformer based on the short-side corrugated sheets determined by the sheet height and sheet width to determine the average oil temperature and top oil temperature of the transformer;

[0030] an adjustment module, configured to adjust the sheet width and sheet height if the average oil temperature is lower than a first preset temperature and / or the top oil temperature is higher than a second preset temperature, until the average oil temperature is higher than the first preset temperature and the top oil temperature is lower than the second preset temperature;

[0031] An optimization module is used to optimize the transformer structure model according to the adjusted slice width and slice height;

[0032] The first preset temperature is determined according to the temperature of the environment in which the transformer structure model is running.

[0033] In a third aspect, the present application further provides a computer device comprising a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, any step in the above-mentioned transformer structural optimization method is implemented.

[0034] In a fourth aspect, the present application further provides a transformer, comprising:

[0035] Iron core;

[0036] Iron core winding;

[0037] The transformer oil tank is provided with short-side corrugated sheets on the side of the transformer oil tank away from the iron core, and the structure of the short-side corrugated sheets is determined based on the steps of the above-mentioned transformer structure optimization method.

[0038] The above-mentioned transformer structural optimization method, device, computer equipment, and transformer select the width of the short-side corrugated sheet based on a preset sheet width range, and then determine the sheet height of the short-side corrugated sheet in combination with the preset surface area of ​​the short-side corrugated sheet. Based on the determined sheet width and sheet height, a corresponding short-side corrugated sheet can be determined, and a thermal flow coupling simulation calculation of the transformer is performed based on the short-side corrugated sheet to determine the average oil temperature and top oil temperature of the transformer. When the obtained average oil temperature is lower than a first preset temperature and / or the obtained top oil temperature is higher than a second preset temperature, the sheet width and sheet height of the short-side corrugated sheet are adjusted to re-determine a short-side corrugated sheet. When the average oil temperature obtained based on the short-side corrugated sheet is higher than the first preset temperature and the top oil temperature is lower than the second preset temperature, the sheet width and sheet height of the short-side corrugated sheet are used to optimize the transformer structural model. This transformer structural optimization method can optimize the short-side corrugated sheet structure and determine a transformer with high heat dissipation efficiency based on the short-side corrugated sheet, thereby optimizing the performance of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] 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 of the present application or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying any creative work.

[0040] Figure 1 A diagram illustrating an application environment of a transformer structure optimization method according to an embodiment;

[0041] Figure 2 1 is a flow chart of a method for optimizing the structure of a transformer according to an embodiment;

[0042] Figure 3 is a structural block diagram of an initial transformer model in one embodiment;

[0043] Figure 4 is a structural block diagram of a transformer structure model in one embodiment;

[0044] Figure 5 A structural block diagram of a transformer oil tank equipped with short-side corrugated sheets in one embodiment;

[0045] Figure 6 is a structural block diagram of a transformer structure optimization device in one embodiment;

[0046] Figure 7 FIG. 1 is a diagram showing the internal structure of a computer device in one embodiment. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solutions and advantages of this application more clear, the following further describes this application in detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0048] The transformer structure optimization method provided in the embodiment of the present application can be applied to Figure 1In the application environment shown, terminal 102 communicates with server 104 via a network. A data storage system can store a preset sheet width range and a preset surface area of ​​short-side corrugated sheets that server 104 needs to process. The data storage system can be integrated with server 104 or placed on a cloud or other network server. The server 104 selects the width of the short-side corrugated sheet based on the preset sheet width range stored in the data storage system, and then determines the height of the short-side corrugated sheet based on the preset surface area of ​​the short-side corrugated sheet. Based on the determined sheet width and sheet height, a corresponding short-side corrugated sheet can be determined, and a thermal flow coupling simulation calculation of the transformer is performed based on the short-side corrugated sheet to determine the average oil temperature and the top oil temperature of the transformer. When the average oil temperature obtained is lower than a first preset temperature and / or the top oil temperature obtained is higher than a second preset temperature, the sheet width and sheet height of the short-side corrugated sheet are adjusted to re-determine a short-side corrugated sheet until the average oil temperature obtained based on the short-side corrugated sheet is higher than the first preset temperature and the top oil temperature is lower than the second preset temperature. The transformer structural model is optimized based on the sheet width and sheet height of the short-side corrugated sheet. Furthermore, the short-side corrugated sheet selection process and the average oil temperature and top oil temperature determined based on the short-side corrugated sheet at each sheet width and sheet height can be transmitted to the terminal 102 via the communication network to improve the visualization of the transformer structural optimization method. The terminal 102 may be, but is not limited to, various personal computers, laptops, smartphones, tablet computers, IoT devices, and portable wearable devices. The server 104 may be an independent physical server, a server cluster or distributed system consisting of multiple physical servers, or a cloud server providing cloud computing services.

[0049] In an exemplary embodiment, Figure 2 As shown, a transformer structure optimization method is provided, which is applied to Figure 1 The following is an example of a server in the example, including:

[0050] S202: Select the width of the short-side corrugated sheet according to a preset sheet width range.

[0051] The preset sheet width range is determined based on the historical experience of the short-side corrugated sheet design of the transformer, thereby improving the reliability of the preset sheet width range. At the same time, unnecessary calculations can be reduced based on historical experience, thereby improving calculation efficiency.

[0052] S204: Determine the height of the short-side corrugated sheet according to the preset surface area and width of the short-side corrugated sheet; wherein the height is smaller than the height of the transformer oil tank.

[0053] Correspondingly, the preset surface area of ​​the short-side corrugated sheet of the transformer can be determined based on historical experience, thereby improving data reliability. Furthermore, the short-side corrugated sheet is rectangular. Therefore, based on the area formula of a rectangle, the height of the short-side corrugated sheet can be determined accordingly after determining the preset surface area and sheet width of the side corrugated sheet.

[0054] Furthermore, because taller short-side corrugated sheets may be subjected to greater stress during transformer operation, potentially leading to premature fatigue and damage, having a shorter sheet height than the transformer tank effectively reduces deformation and internal stress concentration, thereby improving the sheet's durability. Furthermore, shorter-side corrugated sheets with a shorter sheet height are easier to install and replace, facilitating future maintenance.

[0055] For example, the preset sheet width range can be 40mm~350mm with an interval of 10mm, and the highest point of the short side corrugated sheet can be 40mm~90mm away from the wall of the transformer tank. For example, the short side corrugated sheet of a 10kV transformer can be designed with a sheet width of 160mm and a preset surface area of ​​112000mm. 2 , correspondingly, the sheet height is 700mm.

[0056] S206 , performing a heat-flow coupling simulation calculation of the transformer based on the short-side corrugated sheets determined by the sheet height and the sheet width, to determine the average oil temperature and the top oil temperature of the transformer.

[0057] A short-side corrugated sheet can be uniquely determined based on the sheet height and sheet width. Based on the short-side corrugated sheet, a thermal-fluid coupling simulation calculation of the transformer can be performed to determine the average oil temperature and top oil temperature of the transformer under the short-side corrugated sheet structure.

[0058] S208, if the average oil temperature is lower than the first preset temperature, and / or the top oil temperature is higher than the second preset temperature, adjust the slice width and slice height until the average oil temperature is higher than the first preset temperature and the top oil temperature is lower than the second preset temperature.

[0059] S210: Optimize the transformer structure model according to the adjusted slice width and slice height.

[0060] The first preset temperature is determined according to the temperature of the environment in which the transformer structure model is running.

[0061] Since the average lifespan of a transformer decreases by half for every 6K increase in average oil temperature, the average oil temperature and the top oil temperature can be used to reflect transformer performance. In practical applications, when the average oil temperature is slightly higher than the actual operating ambient temperature of the transformer, the transformer's heat dissipation efficiency is considered to be good. Therefore, the average oil temperature can be determined based on a first preset temperature. Correspondingly, the second preset temperature can be determined based on the transformer's technical specifications to ensure stable operation. The transformer's technical specifications can be 65°C, as specified in the national standard GB 1094.2-2013 (Power Transformers - Part 2: Temperature Rise).

[0062] The above-mentioned transformer structural optimization method selects the width of the short-side corrugated sheet based on a preset sheet width range, and then determines the sheet height of the short-side corrugated sheet in combination with the preset surface area of ​​the short-side corrugated sheet. Based on the determined sheet width and sheet height, a corresponding short-side corrugated sheet can be determined, and a thermal flow coupling simulation calculation of the transformer is performed based on the short-side corrugated sheet to determine the average oil temperature and top oil temperature of the transformer. When the obtained average oil temperature is lower than a first preset temperature and / or the obtained top oil temperature is higher than a second preset temperature, the sheet width and sheet height of the short-side corrugated sheet are adjusted to re-determine a short-side corrugated sheet. When the average oil temperature obtained based on the short-side corrugated sheet is higher than the first preset temperature and the top oil temperature is lower than the second preset temperature, the sheet width and sheet height of the short-side corrugated sheet are used to optimize the transformer structural model. This transformer structural optimization method can optimize the short-side corrugated sheet structure and determine a transformer with high heat dissipation efficiency based on the short-side corrugated sheet, thereby optimizing the transformer performance.

[0063] In an exemplary embodiment, the step of adjusting the sheet width includes:

[0064] Starting from the boundary value of the preset slice width range, the slice width is adjusted within the preset slice width range with a preset step length as the span.

[0065] The width of the sheet is adjusted from the lower limit of the preset sheet width range in an increasing direction with a preset step size as the span; or, from the upper limit of the preset sheet width range in a decreasing direction with a preset step size as the span, to avoid missing the optimal solution and improve the reliability of the transformer structure optimization method. For example, the preset step size can be 10 mm.

[0066] In an exemplary embodiment, the steps of constructing the transformer structure model include:

[0067] Construct an initial transformer model, which includes an iron core, an iron core winding, and a transformer tank with short-side corrugated sheets installed.

[0068] The iron core windings that are not embedded in the grooves of the transformer tank are removed to obtain the transformer structure model.

[0069] according to Figure 3 The transformer initial model shown in the figure is simplified to obtain the following Figure 4 The transformer structure model shown. Specifically, the core windings that are not embedded in the transformer tank groove are removed, and correspondingly, the core windings that are embedded in the transformer tank groove are retained to obtain a simplified core winding. Since the heat generated by the core is relatively small during the actual operation of the transformer and can be ignored relative to the core windings, simulation operations on the transformer structure model obtained after the simplified core windings can still obtain reliable data, and the simulation calculation is more concise. For example, Figure 3 A complete core winding is composed of three core windings. According to the symmetry and structure of the core winding, the 5 / 6 core windings that are not embedded in the transformer oil tank groove are removed, and the 1 / 6 core windings that are embedded in the transformer oil tank groove are retained to obtain a simplified core winding. The retained 1 / 6 core windings are still located in the same position. The transformer structure model constructed in this way can be more helpful in observing the working conditions of the transformer before and after simplification.

[0070] Among them, 302 is the short-side corrugated sheet, 304 is the iron core, 306 is the complete iron core winding, 308 is the air space, and 310 is the transformer tank groove.

[0071] In an exemplary embodiment, the step of removing the core windings that are not embedded in the transformer tank groove to obtain the transformer structure model includes:

[0072] The core windings that are not embedded in the transformer tank groove are removed, and the core windings embedded in the transformer tank groove are simplified into a rectangular parallelepiped to obtain the transformer structure model.

[0073] like Figure 5 As shown in the transformer oil tank 500 with short-side corrugated sheets installed, the transformer oil tank groove is a rectangular parallelepiped. Therefore, the simplified iron core winding is made into a rectangular parallelepiped, so that the simplified iron core winding can be completely embedded in the transformer oil tank groove, thereby reducing the impact of the outside world on the transformer structure model and improving the reliability of the transformer structure optimization method.

[0074] In an exemplary embodiment, the step of determining the average oil temperature of the transformer includes:

[0075] Obtain the top and bottom oil temperatures of the transformer oil during transformer structure model simulation.

[0076] Determine the average oil temperature based on the top oil temperature and the bottom oil temperature.

[0077] During the simulation operation, an ambient temperature is given so that the transformer structure model operates at the ambient temperature. Under this condition, the top oil temperature and the bottom oil temperature of the transformer oil are obtained to determine the average oil temperature, so that the simulation operation is consistent with the actual application and the practicality of the transformer structure optimization method is improved.

[0078] The above-mentioned ambient temperature can be determined according to the actual application environment conditions of the transformer.

[0079] In an exemplary embodiment, the step of determining the average oil temperature and the top oil temperature of the transformer includes:

[0080] Based on the finite element thermal flow simulation analysis method, the transformer structure model after adjusting the slice width and slice height is subjected to thermal flow coupling simulation calculation to determine the average oil temperature and the top oil temperature.

[0081] The specific operation process of the above finite element thermal flow simulation analysis is as follows:

[0082] ① Establish a transformer structure model based on the width and height of the given short-side corrugated sheet;

[0083] ② Assign corresponding materials to different structural areas of the transformer structure model according to the conditions in the actual application environment;

[0084] ③ According to the parameters of actual application, set the heat transfer of solid and fluid, including initial temperature, boundary conditions, etc.;

[0085] ④ Set the laminar flow of the fluid according to the parameters of the actual application, such as the compressibility of the flow, whether to include gravity, etc.

[0086] ⑤ According to the expected accuracy requirements, the different structural parts of the transformer structure model are divided into grids of different sizes;

[0087] ⑥ Set the solution conditions for the optimal short-side corrugated sheet width, such as calculation step size, convergence conditions, etc.;

[0088] ⑦According to the obtained top oil temperature and bottom oil temperature, the optimal sheet width is obtained by comparative analysis.

[0089] In an exemplary embodiment, the method further includes:

[0090] The temperature distribution curve is determined and displayed based on the average oil temperature and the top oil temperature corresponding to the short-side corrugated sheets of different sheet heights and / or sheet widths.

[0091] Based on the obtained top oil temperature and bottom oil temperature, temperature distribution diagrams under different sheet widths are drawn, so that staff can determine the optimal solution for the sheet width of the short-side corrugated sheet by intuitively observing the temperature distribution diagram, thereby improving the visualization of the transformer structural optimization method.

[0092] It should be noted that the number of short-side corrugated fins in the above transformer structural optimization method is fixed and can be determined based on the number of short-side corrugated fins in the actual transformer. For example, if the simulation is performed on a transformer model S20-M-630 / 10-NX2, the number of short-side fins is 9, and the distance between the fins is determined based on the distance specified in the design drawings of this transformer model.

[0093] It should be understood that, although the various steps in the flowcharts involved in the various embodiments described above are displayed in sequence according to the instructions of the arrows, these steps are not necessarily executed in sequence in the order indicated by the arrows. Unless otherwise specified herein, there is no strict order restriction on the execution of these steps, and these steps can be executed in other orders. Moreover, at least a portion of the steps in the flowcharts involved in the various embodiments described above can include multiple steps or multiple stages, and these steps or stages are not necessarily executed and completed at the same time, but can be executed at different times, and the execution order of these steps or stages is not necessarily to be carried out in sequence, but can be executed in turn or alternately with other steps or at least a portion of steps or stages in other steps.

[0094] Based on the same inventive concept, embodiments of the present application also provide a transformer structure optimization device for implementing the aforementioned transformer structure optimization method. The solution provided by this device is similar to the solution described in the aforementioned method. Therefore, the specific limitations of one or more transformer structure optimization device embodiments provided below can be found in the above-described limitations of the transformer structure optimization method and will not be further elaborated here.

[0095] In an exemplary embodiment, Figure 6 As shown, a transformer structure optimization device 600 is provided, comprising: a sheet width selection module 602, a sheet height determination module 604, an oil temperature calculation module 606, an adjustment module 608 and an optimization module 610, wherein:

[0096] The sheet width selection module 602 is used to select the sheet width of the short-side corrugated sheet based on a preset sheet width range.

[0097] The sheet height determination module 604 is used to determine the sheet height of the short-side corrugated sheet according to the preset surface area and sheet width of the short-side corrugated sheet; wherein the sheet height is smaller than the height of the transformer oil tank.

[0098] The oil temperature calculation module 606 is used to perform a heat flow coupling simulation calculation of the transformer based on the short-side corrugated sheets determined by the sheet height and sheet width to determine the average oil temperature and the top oil temperature of the transformer.

[0099] The adjustment module 608 is used to adjust the slice width and slice height if the average oil temperature is lower than the first preset temperature and / or the top oil temperature is higher than the second preset temperature until the average oil temperature is higher than the first preset temperature and the top oil temperature is lower than the second preset temperature.

[0100] The optimization module 610 is used to optimize the transformer structure model according to the adjusted slice width and slice height.

[0101] The first preset temperature is determined according to the temperature of the environment in which the transformer structure model is running.

[0102] In an exemplary embodiment, the slice width selection module 602 includes: a slice width range selection module.

[0103] The slice width range selection module is used to adjust the slice width starting from the boundary value of the preset slice width range and within the preset slice width range with a preset step length as the span.

[0104] In an exemplary embodiment, the optimization module 610 includes an initial construction module and a model simplification module.

[0105] The initial construction module is used to construct an initial transformer model, which includes an iron core, an iron core winding, and a transformer tank with short-side corrugated sheets installed.

[0106] The model simplification module is used to remove the core windings that are not embedded in the transformer tank grooves to obtain the transformer structure model.

[0107] In an exemplary embodiment, the model simplification module includes: a model simplification submodule.

[0108] The model simplification submodule is used to remove the core windings that are not embedded in the transformer tank groove, and simplify the shape of the core windings embedded in the transformer tank groove into a rectangular parallelepiped to obtain the transformer structure model.

[0109] In an exemplary embodiment, the adjustment module 608 includes: a temperature acquisition module and a temperature average determination module.

[0110] The temperature acquisition module is used to obtain the top oil temperature and bottom oil temperature of the transformer oil when the transformer structure model simulation is running.

[0111] The average temperature determination module is used to determine the average oil temperature based on the top oil temperature and the bottom oil temperature.

[0112] In an exemplary embodiment, the oil temperature calculation module 606 includes: an oil temperature calculation submodule.

[0113] The oil temperature calculation submodule is used to perform heat-flow coupling simulation calculation on the transformer structure model after adjusting the sheet width and sheet height based on the finite element heat flow simulation analysis method to determine the average oil temperature and the top oil temperature.

[0114] In an exemplary embodiment, the above-mentioned apparatus further includes: a temperature distribution curve determination module.

[0115] The temperature distribution curve determination module is used to determine and display the temperature distribution curve according to the average oil temperature and top oil temperature corresponding to the short-side corrugated sheets of different sheet heights and / or sheet widths.

[0116] Each module in the transformer structural optimization device described above can be implemented in whole or in part through software, hardware, or a combination thereof. Each module can be embedded in or independent of a processor in a computer device in hardware form, or can be stored in a computer device memory in software form, so that the processor can call and execute the corresponding operations of each module.

[0117] In an exemplary embodiment, a computer device is provided. The computer device may be a terminal, and its internal structure diagram may be as shown in FIG. Figure 7 As shown. The computer device includes a processor, memory, an input / output interface, a communication interface, a display unit, and an input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are connected to the system bus via the input / output interface. The processor of the computer device is used to provide computing and control capabilities. The memory of the computer device includes a non-volatile storage medium and internal memory. The non-volatile storage medium stores an operating system and a computer program. The internal memory provides an environment for the operation of the operating system and computer program in the non-volatile storage medium. The input / output interface of the computer device is used to exchange information between the processor and external devices. The communication interface of the computer device is used to communicate with external terminals via wired or wireless communication, and the wireless communication can be achieved via Wi-Fi, a mobile cellular network, near-field communication (NFC), or other technologies. When executed by the processor, the computer program implements a transformer structural optimization method. The display unit of the computer device is used to produce a visually visible image and can be a display screen, a projection device, or a virtual reality imaging device. The display screen can be a liquid crystal display screen or an electronic ink display screen, and the input device of the computer device can be a touch layer covering the display screen, or a button, trackball or touchpad set on the computer device casing, or an external keyboard, touchpad or mouse.

[0118] Those skilled in the art will understand that Figure 7 The structure shown in the figure is only a block diagram of a part of the structure related to the solution of the present application, and does not constitute a limitation on the computer device to which the solution of the present application is applied. The specific computer device may include more or fewer components than shown in the figure, or combine certain components, or have a different component arrangement.

[0119] In an exemplary embodiment, a computer device is provided, including a memory and a processor, wherein a computer program is stored in the memory and the processor executes the steps of any one of the above transformer structure optimization methods.

[0120] In an exemplary embodiment, a transformer is provided, including: an iron core, an iron core winding, and a transformer oil tank.

[0121] Among them, a short-side corrugated sheet is provided on the side of the transformer oil tank away from the iron core, and the structure of the short-side corrugated sheet is determined based on the steps of the above-mentioned transformer structure optimization method.

[0122] The transformer-based structural optimization method can quickly and simply determine the structure of the short-side corrugated sheet with higher heat dissipation efficiency, thereby correspondingly determining a transformer with higher heat dissipation efficiency and increasing the service life of the transformer.

[0123] In one embodiment, a computer-readable storage medium is provided, on which a computer program is stored. When the computer program is executed by a processor, the steps of any one of the above-mentioned transformer structure optimization methods are implemented.

[0124] In one embodiment, a computer program product is provided, comprising a computer program, which implements the steps of any one of the above transformer structure optimization methods when executed by a processor.

[0125] Those skilled in the art will understand that all or part of the processes in the above-mentioned embodiments can be implemented by instructing the relevant hardware through a computer program. The computer program can be stored in a non-volatile computer-readable storage medium. When the computer program is executed, it can include the processes of the embodiments of the above-mentioned methods. In particular, any reference to memory, database, or other media used in the embodiments provided in this application can include at least one of non-volatile memory and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The databases involved in the various embodiments provided herein may include at least one of a relational database and a non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the various embodiments provided herein may be, but are not limited to, general-purpose processors, central processing units (CPUs), graphics processing units (GPUs), digital signal processors (DSPs), programmable logic devices (PLDs), quantum computing-based data processing logic devices, artificial intelligence (AI) processors, and the like.

[0126] The technical features of the above embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this application.

[0127] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present application shall be determined by the appended claims.

Claims

1. A method for optimizing the structure of a transformer, characterized in that: The method comprises: According to the preset sheet width range, select the sheet width of the short-side corrugated sheet; Determining the height of the short-side corrugated sheet according to the preset surface area of ​​the short-side corrugated sheet and the sheet width; wherein the sheet height is less than the height of the transformer oil tank; Based on the short-side corrugated sheets determined by the sheet height and the sheet width, a heat-flow coupling simulation calculation of the transformer is performed to determine the average oil temperature and the top oil temperature of the transformer; If the average oil temperature is lower than a first preset temperature, and / or the top oil temperature is higher than a second preset temperature, adjusting the slice width and the slice height until the average oil temperature is higher than the first preset temperature and the top oil temperature is lower than the second preset temperature; Optimize the transformer structure model based on the adjusted slice width and slice height; The first preset temperature is determined according to the temperature of the environment in which the transformer structure model is running; The steps of constructing the transformer structure model include: Constructing an initial transformer model, wherein the initial transformer model includes an iron core, an iron core winding, and a transformer oil tank with short-side corrugated sheets installed; Removing the iron core windings that are not embedded in the transformer oil tank grooves to obtain the transformer structure model; The step of removing the core windings that are not embedded in the transformer oil tank grooves to obtain the transformer structure model includes: The iron core windings not embedded in the transformer oil tank groove are removed from the iron core windings, and the shape of the iron core windings embedded in the transformer oil tank groove is simplified into a rectangular parallelepiped to obtain the transformer structure model; Determining the average oil temperature and the top oil temperature of the transformer includes: Based on the finite element thermal flow simulation analysis method, a thermal flow coupling simulation calculation is performed on the transformer structure model after adjusting the plate width and plate height to determine the average oil temperature and the top oil temperature; Wherein, the finite element heat flow simulation analysis method is: A transformer structure model is established based on the width and height of the given short-side corrugated sheet; Assigning corresponding materials to different structural areas of the transformer structure model according to various conditions in an actual application environment; Set up heat transfer for solids and fluids based on the parameters of the actual application, including initial temperature and boundary conditions; Set up laminar flow according to the parameters of the actual application, including the compressibility of the flow and whether to include gravity; According to the desired accuracy requirement, different structural parts of the transformer structure model are divided into grids of different sizes; Set the solution conditions for the optimal short-side corrugated sheet width, including the calculation step size and convergence conditions; Based on the obtained top oil temperature and bottom oil temperature, the optimal sheet width is obtained through comparative analysis.

2. The method according to claim 1, characterized in that The step of adjusting the sheet width comprises: Starting from the boundary value of the preset slice width range, the slice width is adjusted within the preset slice width range with a preset step length as a span.

3. The method according to claim 1, characterized in that The step of determining the average oil temperature of the transformer comprises: Obtaining the top oil temperature and the bottom oil temperature of the transformer oil when the transformer structure model simulation is running; The average oil temperature is determined according to the top oil temperature and the bottom oil temperature.

4. The method according to claim 1, wherein The method further comprises: A temperature distribution curve is determined and displayed based on the average oil temperature and the top oil temperature corresponding to the short-side corrugated sheets of different sheet heights and / or sheet widths.

5. A transformer structure optimization device, characterized in that: The device comprises: A sheet width selection module is used to select the sheet width of the short-side corrugated sheet based on a preset sheet width range; a sheet height determination module, configured to determine the sheet height of the short-side corrugated sheet according to a preset surface area of ​​the short-side corrugated sheet and the sheet width; wherein the sheet height is less than the height of the transformer oil tank; an oil temperature calculation module, configured to perform a heat-flow coupling simulation calculation of a transformer based on the short-side corrugated sheets determined by the sheet height and the sheet width, so as to determine an average oil temperature and a top oil temperature of the transformer; an adjustment module, configured to adjust the slice width and the slice height if the average oil temperature is lower than a first preset temperature and / or the top oil temperature is higher than a second preset temperature, until the average oil temperature is higher than the first preset temperature and the top oil temperature is lower than the second preset temperature; An optimization module is used to optimize the transformer structure model according to the adjusted slice width and slice height; The first preset temperature is determined according to the temperature of the environment in which the transformer structure model is running; The optimization module includes: An initial construction module, used to construct an initial transformer model, wherein the initial transformer model includes an iron core, an iron core winding, and a transformer oil tank with short-side corrugated sheets installed; A model simplification module is used to remove the core windings that are not embedded in the transformer tank grooves to obtain the transformer structure model; The model simplification module includes: A model simplification submodule is used to remove the core windings that are not embedded in the transformer tank groove and simplify the shape of the core windings embedded in the transformer tank groove into a rectangular parallelepiped to obtain the transformer structure model; The oil temperature calculation module includes: An oil temperature calculation submodule is used to perform heat flow coupling simulation calculation on the transformer structure model after adjusting the sheet width and sheet height based on a finite element heat flow simulation analysis method to determine the average oil temperature and the top oil temperature; Wherein, the finite element heat flow simulation analysis method is: A transformer structure model is established based on the width and height of the given short-side corrugated sheet; Assigning corresponding materials to different structural areas of the transformer structure model according to various conditions in an actual application environment; Set up heat transfer for solids and fluids based on the parameters of the actual application, including initial temperature and boundary conditions; Set up laminar flow according to the parameters of the actual application, including the compressibility of the flow and whether to include gravity; According to the desired accuracy requirement, different structural parts of the transformer structure model are divided into grids of different sizes; Set the solution conditions for the optimal short-side corrugated sheet width, including the calculation step size and convergence conditions; Based on the obtained top oil temperature and bottom oil temperature, the optimal sheet width is obtained through comparative analysis.

6. A computer device comprising a memory and a processor, wherein the memory stores a computer program, wherein: When the processor executes the computer program, the steps of the method according to any one of claims 1 to 4 are implemented.

7. A transformer, characterized in that: include: Iron core; Iron core winding; A transformer oil tank, wherein a short-side corrugated sheet is provided on a side of the transformer oil tank away from the iron core, and the structure of the short-side corrugated sheet is determined based on the steps of the transformer structure optimization method according to any one of claims 1 to 4.

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