Method, device and equipment for determining eddy current loss of transformer core, storage medium and program product

Abstract

The invention discloses a method, device and equipment for determining eddy current loss of a transformer core, a storage medium and a program product. The method comprises the following steps: constructing a transformer core multi-stage model; constructing an n-layer multi-stage joint iron core model based on the size information of the multi-stage joint iron core; replacing corresponding areas in the transformer iron core multistage model with the n-layer multistage joint iron core model to obtain a replaced transformer iron core multistage model; determining eddy current loss results corresponding to n layers of laminated iron cores in the replaced transformer iron core multistage model; the step of constructing an n-layer multi-stage joint iron core model based on the size of the multi-stage joint iron core is repeatedly executed until it is determined that all areas in the transformer iron core multi-stage model are completely replaced, and eddy current loss results corresponding to the n-layer laminated iron cores are obtained; and determining an eddy-current loss result of the transformer iron core based on the eddy-current loss results corresponding to the plurality of n-layer laminated iron cores. By adopting the method, the eddy-current loss result of the transformer iron core can be accurately determined.

Description

Technical Field

[0001] The present application relates to the field of electric power technology, and in particular to a method, device, equipment, storage medium and program product for determining eddy current loss of a transformer core. Background Art

[0002] The UHV transformer is one of the key equipment in the UHV AC transmission project. It plays a role in changing the voltage level in the power system. Its operating efficiency and stability will directly affect the safe and stable operation of the UHV transmission line. The transformer core will generate an induced electromotive force under the action of the alternating magnetic field, and generate an induced current in the circuit, namely eddy current. The thermal effect of eddy current in the circuit is called eddy current loss, which is a component of the transformer iron loss. Generally speaking, the eddy current loss of small transformers can be basically ignored due to their small size, but the UHV transformer is very large, so a more accurate calculation of the eddy current loss is required.

[0003] Therefore, how to accurately determine the eddy current loss results of the transformer core has become an urgent problem to be solved. Summary of the invention

[0004] The embodiments of the present application provide a method, device, equipment, storage medium and program product for determining the eddy current loss of the transformer core, which can accurately determine the eddy current loss result of the transformer core.

[0005] In a first aspect, an embodiment of the present application provides a method for determining eddy current loss of a transformer core, the method comprising:

[0006] Construct a multi-level model of the transformer core;

[0007] Based on the size information of the multi-level joint core, an n-layer multi-level joint core model is constructed; n is a positive integer;

[0008] Using the n-layer multi-stage joint core model to replace the corresponding area in the transformer core multi-stage model, to obtain the replaced transformer core multi-stage model;

[0009] Determine the eddy current loss result corresponding to the n-layer laminated core in the multi-stage model of the transformer core after replacement; the position of the n-layer laminated core is the same as that of the n-layer multi-stage joint core model;

[0010] Repeat the steps of constructing an n-layer multi-level seam core model based on the size of the multi-level seam core until all regions in the transformer core multi-level model are replaced, and eddy current loss results corresponding to multiple n-layer laminated cores are obtained;

[0011] Based on the eddy current loss results corresponding to the multiple n-layer laminated cores, the eddy current loss results of the transformer core are determined.

[0012] In one of the embodiments, a multi-stage model of a transformer core is constructed, including: constructing a model corresponding to each stage of the transformer core based on the size information of each stage of the transformer core; the size information includes the length and width of the core at this stage and the window width and window height of the core at this stage; and superimposing the models corresponding to each stage of the core to obtain a multi-stage model of the transformer core.

[0013] In one of the embodiments, the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-stage model is determined, including: adding material properties to the core, winding and shell in the replaced transformer core multi-stage model respectively; drawing the mesh corresponding to the replaced transformer core multi-stage model; determining the parameters of the solver, and determining the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-stage model based on the parameters, boundary conditions and mesh of the solver.

[0014] In one embodiment, material attributes are added to the core, winding and shell in the replaced transformer core multi-stage model, including: adding silicon steel sheet material attributes to the core, adding pure copper material attributes to the winding, and adding steel material attributes to the shell in the replaced transformer core multi-stage model.

[0015] In one embodiment, the boundary condition includes at least one of the following: the current of the winding is the rated current; the loss calculation node of the core is a preset loss calculation node.

[0016] In one of the embodiments, the method further includes: determining the rated current corresponding to the winding; and determining a preset loss calculation node corresponding to the core.

[0017] In a second aspect, the present application provides a device for determining eddy current loss of a transformer core, the device comprising:

[0018] Building module for building multi-level model of transformer core;

[0019] The construction module is also used to construct an n-layer multi-level joint core model based on the size information of the multi-level joint core; n is a positive integer;

[0020] A processing module, used for replacing a corresponding region in the transformer core multi-level model with an n-layer multi-level seam core model to obtain a replaced transformer core multi-level model;

[0021] A determination module is used to determine the eddy current loss result corresponding to the n-layer laminated core in the multi-level model of the transformer core after replacement; the position of the n-layer laminated core is the same as the position of the n-layer multi-level seam core model;

[0022] A processing module is used to repeatedly execute the steps of constructing an n-layer multi-level seam core model based on the size of the multi-level seam core until all regions in the transformer core multi-level model are replaced to obtain eddy current loss results corresponding to multiple n-layer laminated cores;

[0023] The determination module is also used to determine the eddy current loss result of the transformer core based on the eddy current loss results corresponding to the multiple n-layer laminated cores.

[0024] In a third aspect, the present application provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and when the processor executes the computer program, the following steps are implemented:

[0025] Construct a multi-level model of the transformer core;

[0026] Based on the size information of the multi-level joint core, an n-layer multi-level joint core model is constructed; n is a positive integer;

[0027] Using the n-layer multi-stage joint core model to replace the corresponding area in the transformer core multi-stage model, to obtain the replaced transformer core multi-stage model;

[0028] Determine the eddy current loss result corresponding to the n-layer laminated core in the multi-stage model of the transformer core after replacement; the position of the n-layer laminated core is the same as that of the n-layer multi-stage joint core model;

[0029] Repeat the steps of constructing an n-layer multi-level seam core model based on the size of the multi-level seam core until all regions in the transformer core multi-level model are replaced, and eddy current loss results corresponding to multiple n-layer laminated cores are obtained;

[0030] Based on the eddy current loss results corresponding to the multiple n-layer laminated cores, the eddy current loss results of the transformer core are determined.

[0031] In a fourth aspect, the present application further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the following steps are implemented:

[0032] Construct a multi-level model of the transformer core;

[0033] Based on the size information of the multi-level joint core, an n-layer multi-level joint core model is constructed; n is a positive integer;

[0034] Using the n-layer multi-stage joint core model to replace the corresponding area in the transformer core multi-stage model, to obtain the replaced transformer core multi-stage model;

[0035] Determine the eddy current loss result corresponding to the n-layer laminated core in the multi-stage model of the transformer core after replacement; the position of the n-layer laminated core is the same as that of the n-layer multi-stage joint core model;

[0036] Repeat the steps of constructing an n-layer multi-level seam core model based on the size of the multi-level seam core until all regions in the transformer core multi-level model are replaced, and eddy current loss results corresponding to multiple n-layer laminated cores are obtained;

[0037] Based on the eddy current loss results corresponding to the multiple n-layer laminated cores, the eddy current loss results of the transformer core are determined.

[0038] In a fifth aspect, the present application further provides a computer program product, including a computer program, which implements the following steps when executed by a processor:

[0039] Construct a multi-level model of the transformer core;

[0040] Based on the size information of the multi-level joint core, an n-layer multi-level joint core model is constructed; n is a positive integer;

[0041] Using the n-layer multi-stage joint core model to replace the corresponding area in the transformer core multi-stage model, to obtain the replaced transformer core multi-stage model;

[0042] Determine the eddy current loss result corresponding to the n-layer laminated core in the multi-stage model of the transformer core after replacement; the position of the n-layer laminated core is the same as that of the n-layer multi-stage joint core model;

[0043] Repeat the steps of constructing an n-layer multi-level seam core model based on the size of the multi-level seam core until all regions in the transformer core multi-level model are replaced, and eddy current loss results corresponding to multiple n-layer laminated cores are obtained;

[0044] Based on the eddy current loss results corresponding to the multiple n-layer laminated cores, the eddy current loss results of the transformer core are determined.

[0045] The above-mentioned method, device, equipment, storage medium and program product for determining the eddy current loss of the transformer core, the computer equipment can construct a multi-level model of the transformer core; based on the size information of the multi-level joint core, construct an n-layer multi-level joint core model; n is a positive integer; use the n-layer multi-level joint core model to replace the corresponding area in the transformer core multi-level model to obtain the replaced transformer core multi-level model; determine the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-level model; the position of the n-layer laminated core is the same as the position of the n-layer multi-level joint core model; repeat the steps of constructing the n-layer multi-level joint core model based on the size of the multi-level joint core until it is determined that all areas in the transformer core multi-level model are replaced, and the eddy current loss results corresponding to multiple n-layer laminated cores are obtained; based on the eddy current loss results corresponding to multiple n-layer laminated cores, determine the eddy current loss results of the transformer core. By adopting this method, the computer equipment sequentially replaces the corresponding area in the transformer multi-level model with the n-layer multi-level joint core model, and calculates the flow loss of the n-layer laminated core included in the area in the replaced transformer core multi-level model. In this way, the eddy current can be limited to a smaller area, so that the eddy current loss corresponding to each n-layer laminated core can be accurately determined. Furthermore, based on the eddy current loss results corresponding to multiple n-layer laminated cores, the eddy current loss results of the transformer core can be accurately determined. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the drawings required for use in the embodiments of the present application or related technical descriptions will be briefly introduced below. 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 creative work.

[0047] Figure 1 It is a schematic diagram of an application scenario of a method for determining eddy current loss of a transformer core provided in an embodiment of the present application;

[0048] Figure 2 It is a flow chart of a method for determining eddy current loss of a transformer core provided in an embodiment of the present application;

[0049] Figure 3 is a flow chart of another method for determining eddy current loss of a transformer core provided in an embodiment of the present application;

[0050] Figure 4 This is a schematic diagram of the overall geometric structure of a transformer core multi-level model provided by an embodiment of the present application;

[0051] Figure 5It is a partially enlarged schematic diagram of a multi-stage joint core model provided in an embodiment of the present application;

[0052] Figure 6 It is a structural schematic diagram of a device for determining eddy current loss of a transformer core provided in an embodiment of the present application;

[0053] Figure 7 It is a structural diagram of a computer device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0054] In order to make the purpose, technical solution and advantages of the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0055] The following introduces the application scenarios of the method for determining the eddy current loss of the transformer core provided in the embodiments of the present application.

[0056] See also Figure 1 , Figure 1 Schematic diagram of an application scenario of a method for determining eddy current loss of a transformer core provided in an embodiment of the present application. Figure 1 As shown, the computer device 101 ( Figure 1 In the figure, the computer device 101 is drawn as a terminal device for example) and the computer device 102, wherein the computer device 101 is a device for simulation calculation, and the computer device 102 is a device of the transformer manufacturer. Data can be transmitted between the computer device 101 and the computer device 102 through the network.

[0057] Among them, the computer device 101 can first obtain the drawings corresponding to the transformer core from the computer device 102, wherein the drawings include the size information of the transformer core. Afterwards, the computer device 101 can construct a multi-level model of the transformer core based on the acquired size information; construct an n-layer multi-level seam core model based on the size information of the multi-level seam core; n is a positive integer; use the n-layer multi-level seam core model to replace the corresponding area in the transformer core multi-level model to obtain the replaced transformer core multi-level model; determine the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-level model; the position of the n-layer laminated core is the same as the position of the n-layer multi-level seam core model; repeat the steps of constructing the n-layer multi-level seam core model based on the size of the multi-level seam core until all areas in the transformer core multi-level model are replaced, and the eddy current loss results corresponding to multiple n-layer laminated cores are obtained; based on the eddy current loss results corresponding to multiple n-layer laminated cores, determine the eddy current loss result of the transformer core. In this way, the computer device sequentially replaces the corresponding area in the transformer multi-level model with the n-layer multi-level seam core model, and calculates the flow loss of the n-layer laminated core included in the area in the replaced transformer core multi-level model. In this way, the eddy current can be limited to a smaller area, so that the eddy current loss corresponding to each n-layer laminated core can be accurately determined. Furthermore, based on the eddy current loss results corresponding to multiple n-layer laminated cores, the eddy current loss results of the transformer core can be accurately determined.

[0058] Optionally, both the computer device 101 and the computer device 102 may be terminal devices or servers. The terminal devices mentioned here may include but are not limited to: smart phones, tablet computers, laptop computers, desktop computers, smart watches, smart TVs, smart car terminals, etc. The server mentioned here may be an independent physical server, or a server cluster or distributed system composed of multiple physical servers.

[0059] See also Figure 2 , Figure 2 1 is a flow chart of a method for determining eddy current loss of a transformer core provided in an embodiment of the present application. The method can be executed by a computer device (for example, the above-mentioned computer device 101). Figure 2 As shown, the method for determining the transformer core eddy current loss may include but is not limited to the following steps:

[0060] S201. Construct a multi-level model of the transformer core.

[0061] Among them, the computer equipment can build a multi-level model of the transformer core in the simulation software.

[0062] S202: construct an n-layer multi-stage joint core model based on the size information of the multi-stage joint core.

[0063] Wherein, n is a positive integer.

[0064] Optionally, the dimension information of the multi-stage seam core may include but is not limited to the length and width of each stage of the core, and the window width and window height of the core of that stage, which are not limited here.

[0065] In an optional implementation, the computer device may construct the n-layer multi-level seam core model and the transformer core multi-level model in the same coordinate system. That is, after the transformer core multi-level model is constructed in one coordinate system, the computer device may construct the n-layer multi-level seam core model in the same coordinate system based on the size information of the multi-level seam core.

[0066] S203, using the n-layer multi-stage joint core model to replace the corresponding region in the transformer core multi-stage model, to obtain the replaced transformer core multi-stage model.

[0067] S204, determining the eddy current loss result corresponding to the n-layer laminated core in the multi-stage model of the transformer core after replacement.

[0068] The position of the n-layer laminated core is the same as that of the n-layer multi-stage joint core model.

[0069] S205, repeatedly executing the step of constructing an n-layer multi-stage seamed core model based on the size of the multi-stage seamed core, until all regions in the transformer core multi-stage model are replaced, and eddy current loss results corresponding to multiple n-layer laminated cores are obtained.

[0070] That is, after executing step S204, the computer device may repeatedly execute steps S202 to S204 until all regions in the transformer core multi-level model are replaced to obtain eddy current loss results corresponding to multiple n-layer laminated cores.

[0071] S206 , determining the eddy current loss result of the transformer core based on the eddy current loss results corresponding to the multiple n-layer laminated cores.

[0072] In an optional embodiment, a computer device determines the eddy current loss result of a transformer core based on the eddy current loss results corresponding to multiple n-layer laminated cores, which may include: adding the eddy current loss results corresponding to multiple n-layer laminated cores to obtain the eddy current loss result of the transformer core.

[0073] In an embodiment of the present application, a computer device can construct a multi-level model of a transformer core; construct an n-layer multi-level seam core model based on the size information of the multi-level seam core; n is a positive integer; use the n-layer multi-level seam core model to replace the corresponding area in the multi-level model of the transformer core to obtain the replaced multi-level model of the transformer core; determine the eddy current loss result corresponding to the n-layer laminated core in the replaced multi-level model of the transformer core; the position of the n-layer laminated core is the same as the position of the n-layer multi-level seam core model; repeat the steps of constructing the n-layer multi-level seam core model based on the size of the multi-level seam core until all areas in the multi-level model of the transformer core are replaced, and the eddy current loss results corresponding to multiple n-layer laminated cores are obtained; based on the eddy current loss results corresponding to multiple n-layer laminated cores, the eddy current loss results of the transformer core are determined. By adopting this method, the computer equipment sequentially replaces the corresponding area in the transformer multi-level model with the n-layer multi-level joint core model, and calculates the flow loss of the n-layer laminated core included in the area in the replaced transformer core multi-level model. In this way, the eddy current can be limited to a smaller area, so that the eddy current loss corresponding to each n-layer laminated core can be accurately determined. Furthermore, based on the eddy current loss results corresponding to multiple n-layer laminated cores, the eddy current loss results of the transformer core can be accurately determined.

[0074] See also Figure 3 , Figure 3 is a flow chart of another method for determining the eddy current loss of the transformer core provided by an embodiment of the present application. Figure 2 Compared with the method of determining transformer core eddy current losses shown in Figure 3 The method shown specifically describes how the computer device constructs a transformer core multi-level model and how to determine the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-level model. Figure 3 As shown, the method for determining the transformer core eddy current loss may include but is not limited to the following steps:

[0075] S301. Construct a model corresponding to each level of the transformer core based on the size information of each level of the transformer core.

[0076] The size information includes the length and width of the core of this stage and the window width and window height of the core of this stage.

[0077] For example, see Figure 4 , Figure 4 This is a schematic diagram of the overall geometric structure of a transformer core multi-level model provided in an embodiment of the present application. Figure 4 As shown, parts numbered 4, 5, and 6 represent the primary core respectively.

[0078] S302, superimposing the models corresponding to each level of the core to obtain a multi-level model of the transformer core.

[0079] join Figure 4 , Figure 4 It is a multi-level model of the transformer core obtained by superimposing the models corresponding to each level of the core by computer equipment.

[0080] S303: construct an n-layer multi-stage joint core model based on the size information of the multi-stage joint core.

[0081] Wherein, n is a positive integer.

[0082] See also Figure 5 , Figure 5 FIG. 1 is a partially enlarged schematic diagram of a multi-stage joint core model provided in an embodiment of the present application. Figure 5 As shown, serial number 1 represents a multi-stage core; serial number 2 represents a multi-stage joint core; and serial number 3 represents a winding.

[0083] S304, using the n-layer multi-stage joint core model to replace the corresponding region in the transformer core multi-stage model, to obtain the replaced transformer core multi-stage model.

[0084] S305, adding material properties to the core, winding and casing in the replaced transformer core multi-stage model respectively.

[0085] In an optional implementation, the material property value may be obtained by a computer device from a material library; or it may be customized, which is not limited here.

[0086] Since different materials have different physical properties, setting the correct material properties ensures that the simulation model can accurately describe the behavior of these materials under specific conditions, thereby ensuring the accuracy of the simulation results.

[0087] In an optional implementation, the computer device adds material attributes to the core, winding, and shell in the replaced transformer core multi-level model, respectively, which may include: adding silicon steel sheet material attributes to the core, adding pure copper material attributes to the winding, and adding steel material attributes to the shell in the replaced transformer core multi-level model. That is, the computer device may assign silicon steel sheet material to the core, pure copper material to the winding, and steel material to the shell in the replaced transformer core multi-level model.

[0088] Optionally, the silicon steel sheet material may be a silicon steel sheet material with a BH curve; the steel material may be a Q235 steel material.

[0089] Optionally, the computer device may also assign air material to the remaining solution domain in the replaced transformer core multi-level model.

[0090] S306, drawing a grid corresponding to the replaced transformer core multi-level model.

[0091] S307, determining the parameters of the solver, and based on the parameters of the solver, boundary conditions and grids, determining the eddy current loss results corresponding to the n-layer laminated core in the replaced transformer core multi-level model.

[0092] In an optional implementation, the boundary condition may include at least one of the following: the current of the winding is the rated current; the loss calculation node of the core is a preset loss calculation node.

[0093] In this implementation manner, before step S307, the computer device may also determine the rated current corresponding to the winding, and determine the loss calculation node corresponding to the core.

[0094] In an optional implementation, the parameters of the solver may include: the frequency of the solver is 50 Hz.

[0095] S308, repeatedly executing the step of constructing an n-layer multi-stage seamed core model based on the size of the multi-stage seamed core, until all regions in the transformer core multi-stage model are replaced, and eddy current loss results corresponding to multiple n-layer laminated cores are obtained.

[0096] That is, after executing step S307, the computer device repeatedly executes steps S303 to S307 until all regions in the transformer core multi-level model are replaced to obtain eddy current loss results corresponding to multiple n-layer laminated cores.

[0097] S309 , determining the eddy current loss result of the transformer core based on the eddy current loss results corresponding to the multiple n-layer laminated cores.

[0098] In an optional embodiment, a computer device determines the eddy current loss result of a transformer core based on the eddy current loss results corresponding to multiple n-layer laminated cores, which may include: adding the eddy current loss results corresponding to multiple n-layer laminated cores to obtain the eddy current loss result of the transformer core.

[0099] In an embodiment of the present application, a computer device can construct a model corresponding to each level of the transformer core based on the size information of each level of the transformer core; superimpose the models corresponding to each level of the core to obtain a multi-level model of the transformer core; construct an n-layer multi-level seam core model based on the size information of the multi-level seam core; use the n-layer multi-level seam core model to replace the corresponding area in the transformer core multi-level model to obtain the replaced transformer core multi-level model; add material properties to the core, winding and shell in the replaced transformer core multi-level model respectively; draw the grid corresponding to the replaced transformer core multi-level model; determine the parameters of the solver, and determine the eddy current loss results corresponding to the n-layer laminated core in the replaced transformer core multi-level model based on the parameters, boundary conditions and grid of the solver; repeat the steps of constructing the n-layer multi-level seam core model based on the size of the multi-level seam core until all areas in the transformer core multi-level model are replaced to obtain the eddy current loss results corresponding to multiple n-layer laminated cores; determine the eddy current loss results of the transformer core based on the eddy current loss results corresponding to multiple n-layer laminated cores. By adopting this method, the computer equipment sequentially replaces the corresponding area in the transformer multi-level model with the n-layer multi-level joint core model, and calculates the flow loss of the n-layer laminated core included in the area in the replaced transformer core multi-level model. In this way, the eddy current can be limited to a smaller area, so that the eddy current loss corresponding to each n-layer laminated core can be accurately determined. Furthermore, based on the eddy current loss results corresponding to multiple n-layer laminated cores, the eddy current loss results of the transformer core can be accurately determined.

[0100] It should be understood that, although the various steps in the flowcharts involved in the above-mentioned embodiments are displayed in sequence according to the indication of the arrows, these steps are not necessarily executed in sequence according to the order indicated by the arrows. Unless there is a clear explanation in this article, the execution of these steps does not have a strict order restriction, and these steps can be executed in other orders. Moreover, at least a part of the steps in the flowcharts involved in the above-mentioned embodiments can include multiple steps or multiple stages, and these steps or stages are not necessarily executed 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 part of the steps or stages in other steps.

[0101] Based on the same inventive concept, the embodiment of the present application also provides a device for determining the eddy current loss of the transformer core for implementing the method for determining the eddy current loss of the transformer core involved above. The implementation scheme for solving the problem provided by the device is similar to the implementation scheme recorded in the above method, so the specific limitations in one or more embodiments of the device for determining the eddy current loss of the transformer core provided below can refer to the limitations of the method for determining the eddy current loss of the transformer core above, and will not be repeated here.

[0102] See also Figure 6 , Figure 6 Schematic diagram of a device for determining eddy current loss of a transformer core provided in an embodiment of the present application. Figure 6 As shown, the device for determining the eddy current loss of the transformer core may include but is not limited to:

[0103] A construction module 601 is used to construct a transformer core multi-level model;

[0104] The construction module 601 is also used to construct an n-layer multi-level joint core model based on the size information of the multi-level joint core, where n is a positive integer;

[0105] Processing module 602, used to replace the corresponding area in the transformer core multi-level model with the n-layer multi-level seam core model to obtain the replaced transformer core multi-level model;

[0106] The determination module 603 is used to determine the eddy current loss result corresponding to the n-layer laminated core in the multi-level model of the transformer core after replacement; the position of the n-layer laminated core is the same as the position of the n-layer multi-level seam core model;

[0107] Processing module 602 is used to repeatedly execute the step of constructing an n-layer multi-level seam core model based on the size of the multi-level seam core until all regions in the transformer core multi-level model are replaced to obtain eddy current loss results corresponding to multiple n-layer laminated cores;

[0108] The determination module 603 is further configured to determine the eddy current loss result of the transformer core based on the eddy current loss results corresponding to the multiple n-layer laminated cores.

[0109] In one embodiment, when the construction module 601 is used to construct a multi-level model of a transformer core, it is specifically used to: construct a model corresponding to each level of the transformer core based on the size information of each level of the transformer core; the size information includes the length and width of the core at this level and the window width and window height of the core at this level; the models corresponding to each level of the core are superimposed to obtain a multi-level model of the transformer core.

[0110] In one embodiment, when the determination module 603 is used to determine the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-stage model, it is specifically used to: add material properties to the core, winding and shell in the replaced transformer core multi-stage model; draw the grid corresponding to the replaced transformer core multi-stage model; determine the parameters of the solver, and determine the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-stage model based on the parameters, boundary conditions and grid of the solver.

[0111] In one embodiment, when the determination module 603 is used to add material attributes to the core, winding and casing in the replaced transformer core multi-stage model, it is specifically used to: add silicon steel sheet material attributes to the core, add pure copper material attributes to the winding, and add steel material attributes to the casing in the replaced transformer core multi-stage model.

[0112] In one embodiment, the boundary condition includes at least one of the following: the current of the winding is the rated current; and the loss calculation node of the core is a preset loss calculation node.

[0113] In one embodiment, the determination module 603 is further used to determine the rated current corresponding to the winding; and to determine a preset loss calculation node corresponding to the core.

[0114] Each module in the above-mentioned device for determining the eddy current loss of the transformer core can be implemented in whole or in part by software, hardware and a combination thereof. Each of the above-mentioned modules can be embedded in or independent of the processor in the terminal device in the form of hardware, or can be stored in the memory in the terminal device in the form of software, so that the processor can call and execute the operations corresponding to each of the above modules.

[0115] In an exemplary embodiment, the present application provides a computer device, which may be a terminal device, and its internal structure diagram may be as follows: Figure 7As shown. The computer device includes a processor, a memory, an input / output interface, a communication interface, a display unit and an input device. The processor, the memory and the input / output interface are connected through a system bus, and the communication interface, the display unit and the input device are connected to the system bus through 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 an 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 the 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 an external device. The communication interface of the computer device is used to communicate with an external terminal in a wired or wireless manner, and the wireless manner can be implemented through WIFI, a mobile cellular network, near field communication (NFC) or other technologies. When the computer program is executed by the processor, a method for determining the eddy current loss of the transformer core is implemented. The display unit of the computer device is used to form a visually visible picture, which 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 shell, or an external keyboard, touchpad or mouse.

[0116] 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 those shown in the figure, or combine certain components, or have a different arrangement of components.

[0117] In an exemplary embodiment, the present application provides a computer device, including a memory and a processor, wherein a computer program is stored in the memory, and when the processor executes the computer program, the following steps are implemented:

[0118] Construct a multi-level model of the transformer core;

[0119] Based on the size information of the multi-level joint core, an n-layer multi-level joint core model is constructed; n is a positive integer;

[0120] Using the n-layer multi-stage joint core model to replace the corresponding area in the transformer core multi-stage model, to obtain the replaced transformer core multi-stage model;

[0121] Determine the eddy current loss result corresponding to the n-layer laminated core in the multi-stage model of the transformer core after replacement; the position of the n-layer laminated core is the same as that of the n-layer multi-stage joint core model;

[0122] Repeat the steps of constructing an n-layer multi-level seam core model based on the size of the multi-level seam core until all regions in the transformer core multi-level model are replaced, and eddy current loss results corresponding to multiple n-layer laminated cores are obtained;

[0123] Based on the eddy current loss results corresponding to the multiple n-layer laminated cores, the eddy current loss results of the transformer core are determined.

[0124] In one embodiment, when the processor executes a computer program to implement construction of a multi-level model of a transformer core, the following steps are specifically implemented: based on the size information of each level of the transformer core, a model corresponding to each level of the transformer core is constructed; the size information includes the length and width of the core at this level and the window width and window height of the core at this level; the models corresponding to each level of the core are superimposed to obtain a multi-level model of the transformer core.

[0125] In one embodiment, when a processor executes a computer program to determine the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-stage model, the following steps are specifically implemented: adding material properties to the core, winding and shell in the replaced transformer core multi-stage model respectively; drawing the mesh corresponding to the replaced transformer core multi-stage model; determining the parameters of the solver, and determining the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-stage model based on the parameters, boundary conditions and mesh of the solver.

[0126] In one embodiment, when the processor executes a computer program to respectively add material attributes to the core, winding and casing in the replaced transformer core multi-level model, the following steps are specifically implemented: adding silicon steel sheet material attributes to the core, adding pure copper material attributes to the winding, and adding steel material attributes to the casing in the replaced transformer core multi-level model.

[0127] In one embodiment, the boundary condition includes at least one of the following: the current of the winding is the rated current; and the loss calculation node of the core is a preset loss calculation node.

[0128] In one embodiment, the processor executes the computer program to further implement the following steps: determining the rated current corresponding to the winding; and determining a preset loss calculation node corresponding to the core.

[0129] In an exemplary embodiment, the present application provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the following steps are implemented:

[0130] Construct a multi-level model of the transformer core;

[0131] Based on the size information of the multi-level joint core, an n-layer multi-level joint core model is constructed; n is a positive integer;

[0132] Using the n-layer multi-stage joint core model to replace the corresponding area in the transformer core multi-stage model, to obtain the replaced transformer core multi-stage model;

[0133] Determine the eddy current loss result corresponding to the n-layer laminated core in the multi-stage model of the transformer core after replacement; the position of the n-layer laminated core is the same as that of the n-layer multi-stage joint core model;

[0134] Repeat the steps of constructing an n-layer multi-level seam core model based on the size of the multi-level seam core until all regions in the transformer core multi-level model are replaced, and eddy current loss results corresponding to multiple n-layer laminated cores are obtained;

[0135] Based on the eddy current loss results corresponding to the multiple n-layer laminated cores, the eddy current loss results of the transformer core are determined.

[0136] In one embodiment, when a computer program is executed by a processor to implement construction of a multi-level model of a transformer core, the following steps are specifically implemented: based on the size information of each level of the transformer core, a model corresponding to each level of the transformer core is constructed; the size information includes the length and width of the core at this level and the window width and window height of the core at this level; the models corresponding to each level of the core are superimposed to obtain a multi-level model of the transformer core.

[0137] In one embodiment, when a computer program is executed by a processor to determine the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-stage model, the following steps are specifically implemented: adding material properties to the core, winding and shell in the replaced transformer core multi-stage model respectively; drawing the mesh corresponding to the replaced transformer core multi-stage model; determining the parameters of the solver, and determining the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-stage model based on the parameters, boundary conditions and mesh of the solver.

[0138] In one embodiment, when a computer program is executed by a processor to implement adding material attributes to the core, winding and casing in the replaced transformer core multi-level model, the following steps are specifically implemented: adding silicon steel sheet material attributes to the core, adding pure copper material attributes to the winding, and adding steel material attributes to the casing in the replaced transformer core multi-level model.

[0139] In one embodiment, the boundary condition includes at least one of the following: the current of the winding is the rated current; and the loss calculation node of the core is a preset loss calculation node.

[0140] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented: determining the rated current corresponding to the winding; and determining a preset loss calculation node corresponding to the core.

[0141] In an exemplary embodiment, the present application provides a computer program product, including a computer program, which implements the following steps when executed by a processor:

[0142] Construct a multi-level model of the transformer core;

[0143] Based on the size information of the multi-level joint core, an n-layer multi-level joint core model is constructed; n is a positive integer;

[0144] Using the n-layer multi-stage joint core model to replace the corresponding area in the transformer core multi-stage model, to obtain the replaced transformer core multi-stage model;

[0145] Determine the eddy current loss result corresponding to the n-layer laminated core in the multi-stage model of the transformer core after replacement; the position of the n-layer laminated core is the same as that of the n-layer multi-stage joint core model;

[0146] Repeat the steps of constructing an n-layer multi-level seam core model based on the size of the multi-level seam core until all regions in the transformer core multi-level model are replaced, and eddy current loss results corresponding to multiple n-layer laminated cores are obtained;

[0147] Based on the eddy current loss results corresponding to the multiple n-layer laminated cores, the eddy current loss results of the transformer core are determined.

[0148] In one embodiment, when a computer program is executed by a processor to implement construction of a multi-level model of a transformer core, the following steps are specifically implemented: based on the size information of each level of the transformer core, a model corresponding to each level of the transformer core is constructed; the size information includes the length and width of the core at this level and the window width and window height of the core at this level; the models corresponding to each level of the core are superimposed to obtain a multi-level model of the transformer core.

[0149] In one embodiment, when a computer program is executed by a processor to determine the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-stage model, the following steps are specifically implemented: adding material properties to the core, winding and shell in the replaced transformer core multi-stage model respectively; drawing the mesh corresponding to the replaced transformer core multi-stage model; determining the parameters of the solver, and determining the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-stage model based on the parameters, boundary conditions and mesh of the solver.

[0150] In one embodiment, when a computer program is executed by a processor to implement adding material attributes to the core, winding and casing in the replaced transformer core multi-level model, the following steps are specifically implemented: adding silicon steel sheet material attributes to the core, adding pure copper material attributes to the winding, and adding steel material attributes to the casing in the replaced transformer core multi-level model.

[0151] In one embodiment, the boundary condition includes at least one of the following: the current of the winding is the rated current; and the loss calculation node of the core is a preset loss calculation node.

[0152] In one embodiment, when the computer program is executed by a processor, the following steps are also implemented: determining the rated current corresponding to the winding; and determining a preset loss calculation node corresponding to the core.

[0153] It should be noted that the data involved in this application (including but not limited to the size information of each level of the transformer core, the size information of the multi-level joint core, etc.) are all information and data authorized by the user or fully authorized by all parties, and the collection, use and processing of relevant data must comply with relevant regulations.

[0154] A person of ordinary skill in the art can understand that all or part of the processes in the above-mentioned embodiment method can be completed by instructing the relevant hardware through a computer program, and 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. Among them, any reference to the memory, database or other medium used in the embodiments provided in the present 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. As an illustration and not limitation, RAM can be in various forms, such as static random access memory (SRAM) or dynamic random access memory (DRAM). The database involved in each embodiment provided in this application may include at least one of a relational database and a non-relational database. Non-relational databases may include distributed databases based on blockchains, etc., but are not limited to this. The processor involved in each embodiment provided in this application may be a general-purpose processor, a central processing unit, a graphics processor, a digital signal processor, a programmable logic device, a data processing logic device based on quantum computing, an artificial intelligence (AI) processor, etc., but are not limited to this.

[0155] The technical features of the above embodiments may be combined arbitrarily. 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.

[0156] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A method for determining eddy current loss of transformer core, characterized in that: The method comprises: Construct a multi-level model of the transformer core; Based on the size information of the multi-stage joint core, an n-layer multi-stage joint core model is constructed, wherein n is a positive integer; Using the n-layer multi-stage joint core model to replace the corresponding area in the transformer core multi-stage model, to obtain the replaced transformer core multi-stage model; Determine the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-stage model; the position of the n-layer laminated core is the same as the position of the n-layer multi-stage seam core model; Repeat the steps of constructing an n-layer multi-stage seam core model based on the size of the multi-stage seam core until all regions in the transformer core multi-stage model are replaced, and eddy current loss results corresponding to the n-layer laminated cores are obtained; Based on the eddy current loss results corresponding to the plurality of n-layer laminated cores, the eddy current loss results of the transformer core are determined.

2. The method according to claim 1, characterized in that The construction of the transformer core multi-level model comprises: Based on the dimension information of each level of the transformer core, a model corresponding to each level of the transformer core is constructed; the dimension information includes the length and width of the core at this level and the window width and window height of the core at this level; The models corresponding to each level of the core are superimposed to obtain the multi-level model of the transformer core.

3. The method according to claim 1, characterized in that The step of determining the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-stage model includes: Adding material attributes to the core, winding and shell of the replaced transformer core multi-level model respectively; Draw a grid corresponding to the replaced transformer core multi-level model; The parameters of the solver are determined, and based on the parameters of the solver, the boundary conditions and the grid, the eddy current loss results corresponding to the n-layer laminated core in the replaced transformer core multi-level model are determined.

4. The method according to claim 3, characterized in that The adding of material attributes to the core, winding and shell in the replaced transformer core multi-level model respectively includes: The core of the replaced transformer core multi-level model is added with silicon steel sheet material attributes, the winding is added with pure copper material attributes, and the shell is added with steel material attributes.

5. The method according to claim 3, characterized in that: The boundary conditions include at least one of the following: The current of the winding is the rated current; The loss calculation node of the core is a preset loss calculation node.

6. The method according to claim 5, characterized in that The method further comprises: Determining the rated current corresponding to the winding; A preset loss calculation node corresponding to the core is determined.

7. A device for determining eddy current loss of transformer core, characterized in that: The device comprises: Building module for building multi-level model of transformer core; The construction module is also used to construct an n-layer multi-level seam core model based on the size information of the multi-level seam core; wherein n is a positive integer; A processing module, used to replace the corresponding area in the transformer core multi-level model with the n-layer multi-level seam core model to obtain the replaced transformer core multi-level model; A determination module, used to determine the eddy current loss result corresponding to the n-layer laminated core in the replaced transformer core multi-stage model; the position of the n-layer laminated core is the same as the position of the n-layer multi-stage joint core model; The processing module is used to repeatedly execute the step of constructing an n-layer multi-level seam core model based on the size of the multi-level seam core until all regions in the transformer core multi-level model are replaced to obtain eddy current loss results corresponding to the n-layer laminated cores; The determination module is further used to determine the eddy current loss result of the transformer core based on the eddy current loss results corresponding to the multiple n-layer laminated cores.

8. A computer device, characterized in that: The method comprises a memory and a processor, wherein the memory stores a computer program, and the processor implements the steps of the method according to any one of claims 1 to 6 when executing the computer program.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

10. A computer program product, comprising a computer program, characterized in that When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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