Parametric description and modeling method and device for transformer pancake winding

Abstract

The application relates to a transformer pie winding parameterization description and modeling method and device, computer equipment, a storage medium and a program product. The method comprises the following steps: acquiring at least one double-pie model, the acquiring step comprising the following steps: dividing a pie winding structure into a coil level, a wire pie level and a wire turn level, and acquiring three-level parameter data capable of describing the structure; constructing a wire turn curve track according to the data to acquire a wire turn curve model; constructing a wire pie model based on the wire turn curve model; constructing a wire turn arc track according to the data to acquire a first wire turn arc model for connecting two wire pie models, thereby obtaining a double-pie model; acquiring a second wire turn arc model according to the data for connecting at least one double-pie model, thereby obtaining a single-coil model; repeatedly executing the above steps to obtain at least one single-coil model; and constructing a transformer pie winding model by using the at least one single-coil model according to the data. The method can realize parameterization description and modeling of a transformer pie winding.

Description

Technical Field

[0001] This application relates to the field of digital design and simulation technology for power equipment, and in particular to a method, apparatus, computer equipment, computer-readable storage medium, and computer program product for parametric description and modeling of transformer pancake windings. Background Technology

[0002] As a core component of the power system, the performance of power transformers directly affects the security and stability of the power grid. In the planning, fault handling, and equipment optimization of power systems, the analysis of the electromagnetic characteristics, mechanical deformation, and thermal effects of the power transformer's disc windings all rely on high-precision simulation models.

[0003] However, there are two types of modeling methods in traditional technology. One type is to construct a three-dimensional solid model by measuring the actual geometric parameters of the winding and combining it with computer-aided design. However, this method relies on manual parameter calibration, has poor adaptability to complex structures, and is difficult to efficiently and reliably construct a high-precision model that can be used for complex simulations. The other type of method uses lumped parameter models or distributed parameter models to reflect electromagnetic characteristics by fitting frequency response analysis curves with experimental data or optimization algorithms. However, this type of model is difficult to directly relate to the physical structure of the winding, and the computational complexity of frequency-varying parameters is also high at high frequencies.

[0004] Therefore, there is an urgent need for a parametric description and modeling method for transformer pancake windings, so as to efficiently realize the modeling of high-precision power transformer pancake windings. Summary of the Invention

[0005] Therefore, it is necessary to provide a method, apparatus, computer equipment, computer-readable storage medium, and computer program product for parametric description and modeling of transformer pancake windings, addressing the aforementioned technical problems.

[0006] Firstly, this application provides a parametric description and modeling method for transformer pancake windings, including:

[0007] The process of obtaining at least one double-circuit pancake model includes the following steps: dividing the pancake winding structure of the transformer into coil level, pancake level, and turn level, and obtaining coil level parameter data, pancake level parameter data, and turn level parameter data that can describe the pancake winding structure of the transformer; constructing turn curve trajectories based on turn level parameter data and pancake level parameter data; obtaining at least one turn curve model based on the turn curve trajectory; constructing a positive pancake model and a negative pancake model based on at least one turn curve model; constructing turn arc trajectory based on pancake level parameter data; obtaining a first turn arc model based on the turn arc trajectory; and connecting the positive pancake model and the negative pancake model using the first turn arc model to obtain the double-circuit pancake model.

[0008] Based on the coil-level parameter data, obtain at least one second-line turn arc model; use at least one second-line turn arc model to connect at least one double-line disc model to obtain a single-coil model;

[0009] Repeat the steps of obtaining at least one double-coil model and obtaining a single-coil model to obtain at least one single-coil model. Based on the coil-level parameter data, construct a multi-coil model, which is a transformer pancake winding model.

[0010] In one embodiment, the transformer's disc winding includes at least one coil, the coil including at least one double-coil disc, the double-coil disc including a positive coil and a negative coil, and the coil disc including at least one turn using different winding methods; the turn-level parameter data includes: the number of single-phase coils, the number of phases, the spacing between the iron core main columns, the inner diameter of the coil, the outer diameter of the coil, the distance from the bottom of the coil to the upper surface of the lower yoke, the coil height, the number of coil discs, the spacing between coil discs, the height of the coil disc, and the number of taps; the coil-level parameter data includes: the winding code and the number of taps for different winding methods; the turn-level parameter data includes: the arrangement order, radial and axial dimensions, and material parameters within each coil space.

[0011] In one embodiment, the winding method includes continuous winding, tangled winding, and inner-screen winding; obtaining the winding code for different winding methods includes:

[0012] The winding code for continuous winding is obtained by using numbers to represent the conductor transposition method, the winding group of the parallel-wound conductor, and the number of parallel-wound conductors.

[0013] The winding code for inner-screen winding is obtained by using numbers to represent the main wire transposition method, the number of turns of the main wire, the number of main wires in parallel, the number of short-circuit discs of the screen wire, and the number of turns of the screen wire.

[0014] The winding code for tangled winding is obtained by using numbers to represent the number of interlacing, wire transposition method, number of tangled groups, number of turns of the current pancake group and the tangled group together, whether the tangled group is always wound in pairs, and the number of wires of the current pancake group and the reverse pancake group.

[0015] In one embodiment, a turn curve trajectory is constructed based on the turn-level parameter data and the turn-pie level parameter data; at least one turn curve model is obtained based on the turn curve trajectory, including:

[0016] Based on the turn arrangement order in the turn-level parameter data and the winding code and unwinding number in the pancake-level parameter data, the turn curve trajectory is constructed. The center, curve radius and number of turns of the turn curve trajectory all meet the preset conditions.

[0017] The cross section corresponding to the line-turn curve trajectory is swept along the trajectory to obtain at least one line-turn curve model.

[0018] In one embodiment, constructing the arc trajectory of the line turn based on the line-level parameter data includes:

[0019] Based on keywords such as conductor transposition method in the winding code of the coil level parameter data and the coil spacing in the coil level parameter data, the coordinates of the positive or negative coil model are corrected.

[0020] Based on the coordinates of the corrected positive or negative pie chart model, construct the arc trajectory of the line.

[0021] In one embodiment, at least one second-wire-turn arc model is obtained based on coil-level parameter data; at least one double-wire-panel model is connected using the at least one second-wire-turn arc model to obtain a single-coil model, including:

[0022] Based on the coil-level parameter data, correct the coordinates of at least one double-line pie model;

[0023] Construct the trajectory of the loop curve based on the coordinates of at least one bilinear pie model;

[0024] Sweep along the trajectory of the cross section corresponding to the arc trajectory of the line-turn to obtain at least one arc model of the line-turn;

[0025] A single-coil model is obtained by connecting at least one double-coil pancake model with at least one coil arc model.

[0026] Secondly, this application also provides a device for parametric description and modeling of transformer pancake windings, including:

[0027] An acquisition module is used to acquire at least one double-circuit pancake model. The steps for acquiring the double-circuit pancake model include: dividing the pancake winding structure of the transformer into coil level, pancake level, and turn level; sequentially acquiring coil level parameter data, pancake level parameter data, and turn level parameter data; constructing a turn curve trajectory based on the turn level parameter data and the pancake level parameter data; acquiring at least one turn curve model based on the turn curve trajectory; constructing a positive pancake model and a negative pancake model based on the at least one turn curve model; constructing a turn arc trajectory based on the pancake level parameter data; acquiring a first turn arc model based on the turn arc trajectory; and connecting the positive pancake model and the negative pancake model using the first turn arc model to obtain the double-circuit pancake model.

[0028] A connection module is used to obtain at least one second-line turn arc model based on the coil-level parameter data; and to connect the at least one second-line turn arc model to the at least one double-line disc model to obtain a single-coil model.

[0029] A construction module is used to repeatedly execute the steps of obtaining at least one double-wire pancake model and obtaining a single-coil model to obtain at least one single-coil model. Based on the coil-level parameter data, a multi-coil model is constructed, wherein the multi-coil model is a transformer pancake winding model.

[0030] Thirdly, this application also provides a computer device, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0031] The process of obtaining at least one double-circuit pancake model includes the following steps: dividing the pancake winding structure of the transformer into coil level, pancake level, and turn level; sequentially obtaining coil level parameter data, pancake level parameter data, and turn level parameter data that describe the pancake winding structure of the transformer; constructing turn curve trajectories based on turn level parameter data and pancake level parameter data; obtaining at least one turn curve model based on the turn curve trajectory; constructing a positive pancake model and a negative pancake model based on at least one turn curve model; constructing turn arc trajectories based on pancake level parameter data; obtaining a first turn arc model based on the turn arc trajectory; and connecting the positive pancake model and the negative pancake model using the first turn arc model to obtain the double-circuit pancake model.

[0032] Based on the coil-level parameter data, obtain at least one second-line turn arc model; use at least one second-line turn arc model to connect at least one double-line disc model to obtain a single-coil model;

[0033] Repeat the steps of obtaining at least one double-coil model and obtaining a single-coil model to obtain at least one single-coil model. Based on the coil-level parameter data, construct a multi-coil model, which is a transformer pancake winding model.

[0034] Fourthly, this application also provides a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, performs the following steps:

[0035] The process of obtaining at least one double-circuit pancake model includes the following steps: dividing the pancake winding structure of the transformer into coil level, pancake level, and turn level; sequentially obtaining coil level parameter data, pancake level parameter data, and turn level parameter data that describe the pancake winding structure of the transformer; constructing turn curve trajectories based on turn level parameter data and pancake level parameter data; obtaining at least one turn curve model based on the turn curve trajectory; constructing a positive pancake model and a negative pancake model based on at least one turn curve model; constructing turn arc trajectories based on pancake level parameter data; obtaining a first turn arc model based on the turn arc trajectory; and connecting the positive pancake model and the negative pancake model using the first turn arc model to obtain the double-circuit pancake model.

[0036] Based on the coil-level parameter data, obtain at least one second-line turn arc model; use at least one second-line turn arc model to connect at least one double-line disc model to obtain a single-coil model;

[0037] Repeat the steps of obtaining at least one double-coil model and obtaining a single-coil model to obtain at least one single-coil model. Based on the coil-level parameter data, construct a multi-coil model, which is a transformer pancake winding model.

[0038] Fifthly, this application also provides a computer program product, including a computer program that, when executed by a processor, performs the following steps:

[0039] The process of obtaining at least one double-circuit pancake model includes the following steps: dividing the pancake winding structure of the transformer into coil level, pancake level, and turn level; sequentially obtaining coil level parameter data, pancake level parameter data, and turn level parameter data that describe the pancake winding structure of the transformer; constructing turn curve trajectories based on turn level parameter data and pancake level parameter data; obtaining at least one turn curve model based on the turn curve trajectory; constructing a positive pancake model and a negative pancake model based on at least one turn curve model; constructing turn arc trajectories based on pancake level parameter data; obtaining a first turn arc model based on the turn arc trajectory; and connecting the positive pancake model and the negative pancake model using the first turn arc model to obtain the double-circuit pancake model.

[0040] Based on the coil-level parameter data, obtain at least one second-line turn arc model; use at least one second-line turn arc model to connect at least one double-line disc model to obtain a single-coil model;

[0041] Repeat the steps of obtaining at least one double-coil model and obtaining a single-coil model to obtain at least one single-coil model. Based on the coil-level parameter data, construct a multi-coil model, which is a transformer pancake winding model.

[0042] The aforementioned method, apparatus, computer equipment, computer-readable storage medium, and computer program product for parametric description and modeling of transformer pancake windings obtain at least one double-pancake model. The steps for obtaining the double-pancake model include: dividing the transformer's pancake winding structure into coil level, pancake level, and turn level, and obtaining coil level parameter data, pancake level parameter data, and turn level parameter data that can describe the transformer's pancake winding structure; constructing turn curve trajectories based on the turn level parameter data and pancake level parameter data; obtaining at least one turn curve model based on the turn curve trajectory; and constructing a positive pancake model and a negative pancake model based on the at least one turn curve model. Based on the pancake-level parameter data, a pancake-shaped arc trajectory is constructed. A first pancake-shaped arc model is obtained based on this trajectory. This model is then used to connect the positive and negative pancake models to obtain a double-pancake model. Based on the coil-level parameter data, at least one second pancake-shaped arc model is obtained. This second model is then used to connect at least one double-pancake model to obtain a single-coil model. The steps of obtaining at least one double-pancake model and the single-coil model are repeated to obtain at least one single-coil model. Based on the coil-level parameter data and the at least one single-coil model, a multi-coil model is constructed. This multi-coil model is a transformer pancake winding model. The above process of constructing the transformer pancake winding model involves hierarchically dividing the complex transformer pancake winding structure to construct the pancake-shaped curve trajectory and model. This makes the constructed transformer pancake winding model more realistically reflect the electromagnetic characteristics of the winding, improving the accuracy and reliability of the model and achieving a complete description and modeling of the transformer pancake winding. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of this application or related technologies, the drawings used in the description of the embodiments of this application or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a flowchart illustrating the parametric description and modeling method for a transformer disc winding in one embodiment;

[0045] Figure 2 This is an example diagram showing the arrangement order of each pancake space in the line-turn level parameters in one embodiment;

[0046] Figure 3 This is a flowchart illustrating the parametric description and modeling method for transformer disc windings in another embodiment;

[0047] Figure 4 This is a structural block diagram of a transformer disc winding parametric description and modeling device in one embodiment;

[0048] Figure 5 This is an internal structural diagram of a computer device in one embodiment. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0050] It should be noted that the terms "first," "second," etc., used in this application can be used to describe various elements, but these elements are not limited by these terms. These terms are only used to distinguish the first element from the second element. The terms "comprising" and "having," and any variations thereof, used in this application, are intended to cover non-exclusive inclusion. The term "multiple" used in this application refers to two or more. The term "and / or" used in this application refers to one of the embodiments, or any combination of multiple embodiments.

[0051] In one exemplary embodiment, such as Figure 1 As shown, a parametric description and modeling method for transformer disc windings is provided. Taking the application of this method to a terminal as an example, the terminal can be, but is not limited to, various personal computers, laptops, smartphones, tablets, drones, low-altitude aircraft, IoT devices, and portable wearable devices. IoT devices can be smart speakers, smart TVs, smart air conditioners, smart vehicle devices, projection devices, etc. Portable wearable devices can be smartwatches, smart bracelets, head-mounted devices, etc. Head-mounted devices can be virtual reality (VR) devices, augmented reality (AR) devices, smart glasses, etc. The method includes steps 102 to 106. Wherein:

[0052] Step 102: Obtain at least one double-circuit pancake model. The steps for obtaining the double-circuit pancake model include: dividing the pancake winding structure of the transformer into coil level, pancake level, and turn level, and obtaining coil level parameter data, pancake level parameter data, and turn level parameter data that can describe the pancake winding structure of the transformer; constructing turn curve trajectories based on turn level parameter data and pancake level parameter data; obtaining at least one turn curve model based on the turn curve trajectory; constructing a positive pancake model and a negative pancake model based on at least one turn curve model; constructing turn arc trajectory based on pancake level parameter data; obtaining a first turn arc model based on the turn arc trajectory; connecting the positive pancake model and the negative pancake model using the first turn arc model to obtain the double-circuit pancake model.

[0053] Among them, the disc winding is a structural form of transformer, referring to a winding formed by continuously winding conductors radially along the iron core into several flat coils, and then stacking these coils axially along the iron core. The double-coil model is a model formed by connecting a positive coil and a negative coil; the positive coil starts at the innermost coil and ends at the outermost coil; the negative coil starts at the outermost coil and ends at the innermost coil; in the double-coil model, the centers of each coil are coaxial, and the center coordinates are (0, 0, coil spacing) or (0, 0, 0). The coil curve trajectory is used to describe the distribution of conductor coils within the coil; the coil arc trajectory is used to describe the connection of conductors between coils; the coil curve model is a three-dimensional model formed by sweeping along the coil curve trajectory; the coil curve trajectory of one coil can form a coil curve model; the coil arc model is a three-dimensional model formed by sweeping along the coil arc trajectory. The coil-level parameter data is a set of parameter data that describes the coil-level structure of the pancake winding of a transformer; the wire-pancake-level parameter data is a set of parameter data that describes the coil-level structure of the pancake winding of a transformer; the wire-turn-level parameter data is a set of parameter data that describes the wire-turn-level structure of the pancake winding of a transformer. The first wire-turn arc model is used to connect the lead wire between the positive wire-pancake model and the negative wire-pancake model.

[0054] For example, the pancake winding of a transformer consists of at least one coil, which in turn consists of at least one double-coil pancake. The double-coil pancake consists of a positive coil and a negative coil. Each coil consists of at least one turn with different winding methods. To refine the description of the pancake winding, the structure of the transformer's pancake winding is divided into coil level, coil level, and turn level. Simultaneously, the following parameters are identified for the coil level: number of single-phase coils, number of phases, spacing between iron core columns, inner diameter of the coil, outer diameter of the coil, distance from the bottom of the coil to the upper surface of the lower yoke, coil height, number of coils, spacing between coils, coil height, and number of taps. The winding code and number of taps are identified for the coil level. The arrangement order, radial and axial dimensions, and material parameters within each coil space are identified for the turn level. The coil level, coil level, and turn level parameter data are obtained sequentially.

[0055] Further, based on the arrangement order within each pie space in the coil-level parameter data and the number of rolls and firing codes in the pie-level parameter data, a coil curve trajectory is constructed; the coil cross-section corresponding to the coil curve trajectory is swept along the trajectory to obtain at least one coil curve model; based on at least one coil curve model, a positive pie model and a negative pie model are constructed; based on keywords such as conductor transposition method in the winding code in the pie-level parameter data and the coil spacing in the coil-level parameter data, the center coordinates of the positive or negative pie model are changed, and a coil arc trajectory is constructed based on the changed center coordinates of the positive or negative pie model; the coil arc trajectory corresponding to the coil cross-section is swept along the trajectory to obtain a first coil arc model, and the conductor ends of the positive and negative pie models are connected using the first coil arc model to obtain a double pie model.

[0056] Step 104: Based on the coil-level parameter data, obtain at least one second-line turn arc model; use at least one second-line turn arc model to connect at least one double-line disc model to obtain a single-coil model.

[0057] The second-line arc model is used to connect the wire protrusions between the two double-line pie models.

[0058] For example, based on the coil inner diameter, coil outer diameter, distance from the bottom of the coil to the upper surface of the lower yoke, coil height, number of coil discs, and spacing between coil discs in the coil-level parameter data, the center coordinates of at least one double-coil disc model are changed. At least one coil arc trajectory is obtained based on the changed center coordinates of the at least one double-coil disc model. The cross-section of the coil corresponding to the at least one coil arc trajectory is swept along the trajectory to obtain at least one second coil arc model. A coil arc model is used to connect the wire ends between any two double-coil disc models. Finally, at least one coil arc model is used to connect at least one double-coil disc model to obtain a single-coil model.

[0059] Step 106: Repeat the steps of obtaining at least one double-wire pancake model and obtaining a single-coil model to obtain at least one single-coil model. Based on the coil-level parameter data, construct a multi-coil model, which is a transformer pancake winding model.

[0060] The number of single-coil models should be the same as the product of the number of single-phase coils and the number of phases. The number of double-coil models should be half the number of coils in the coil-level parameter data. A number of double-coil models equal to half the number of coils should be obtained, with half the number of coils being at least one. In multi-coil models, windings of the same phase share a common center, and the center distance between windings of non-same-phase coils is equal to the spacing between the main columns of the iron core.

[0061] For example, the step of obtaining at least one double-ply model is repeated until the number of double-ply models is the same as half the number of plywood in the coil-level parameter data, thus obtaining at least one double-ply model; based on at least one double-ply model, the step of obtaining a single coil model is repeated until the number of single coil models is the same as the product of the number of single-phase coils and the number of phases, thus obtaining at least one single coil model; according to the number of single-phase coils, the number of phases, and the spacing of the iron core main columns in the coil-level parameter data, a multi-coil model is constructed using at least one single coil model.

[0062] In the above-mentioned parametric description and modeling method for transformer pancake windings, at least one double-pancake model is obtained. The steps for obtaining the double-pancake model include: dividing the transformer's pancake winding structure into coil level, pancake level, and turn level, and obtaining coil level parameter data, pancake level parameter data, and turn level parameter data that can describe the transformer's pancake winding structure; constructing turn curve trajectories based on turn level parameter data and pancake level parameter data; obtaining at least one turn curve model based on the turn curve trajectory; constructing a positive pancake model and a negative pancake model based on at least one turn curve model; and constructing turn curve models based on pancake level parameter data. The process involves several steps: First, a first-turn arc model is obtained based on the arc trajectory of the turn. This first-turn arc model is then used to connect the positive and negative turn models to obtain a double-turn model. Based on coil-level parameter data, at least one second-turn arc model is obtained. This second-turn arc model is then connected to at least one double-turn model to obtain a single-coil model. The steps of obtaining at least one double-turn model and then the single-coil model are repeated to obtain at least one single-coil model. Based on the coil-level parameter data and at least one single-coil model, a multi-coil model is constructed, which is a transformer pancake winding model. This process constructs the transformer pancake winding model by hierarchically dividing the complex transformer pancake winding structure to build the turn curve trajectory and model. This makes the constructed transformer pancake winding model more realistically reflect the electromagnetic characteristics of the winding, improving the accuracy and reliability of the transformer pancake winding model and achieving a complete description and modeling of the transformer pancake winding.

[0063] In an exemplary embodiment, the transformer's disc winding includes at least one coil, the coil including at least one double-coil disc, the double-coil disc including a positive coil and a negative coil, and the coil disc including at least one turn of wire using different winding methods; the turn-level parameter data includes: the number of single-phase coils, the number of phases, the spacing between the iron core main columns, the inner diameter of the coil, the outer diameter of the coil, the distance from the bottom of the coil to the upper surface of the lower yoke, the coil height, the number of coil discs, the spacing between coil discs, the height of the coil disc, and the number of taps; the coil-level parameter data includes: the winding code and the number of taps unwinding for different winding methods; the turn-level parameter data includes: the arrangement order, radial and axial dimensions, and material parameters within each coil space.

[0064] Among them, the number of phases refers to the number of phases of the AC power system to which the transformer is designed to be connected; the number of single-phase coils is the total number of coils in each phase winding of the transformer; the core column spacing refers to the horizontal distance between the axes of the core columns of two adjacent phases; the coil inner diameter is the diameter of the inner cylindrical surface of the coil after winding, which is the minimum diameter that the winding can fit into the core column, and must be greater than the outer diameter of the core column to ensure sufficient insulation distance; the coil outer diameter refers to the diameter of the outer cylindrical surface of the coil after winding; the distance from the bottom of the coil to the upper surface of the lower yoke refers to the vertical distance from the bottom of the lowest coil to the upper surface of the lower yoke of the transformer; the coil height is the total axial height of the winding from the bottom of the lowest coil to the top of the highest coil; the coil spacing is the axial distance between two adjacent coils; the coil height is the axial height of a single coil; and the number of spans refers to the number of spans that each coil should be electrically divided into. The number of turns for different winding methods refers to the rule or sequence by which a conductor switches from one position to another when transitioning from one turn to the next in a coil with multiple parallel conductors.

[0065] Optionally, for continuous and inner-screen windings, the number of turns to be removed is:

[0066]

[0067] For tangled windings, the number of unwinding turns is:

[0068]

[0069] in, This represents the number of files rejected.

[0070] Furthermore, the turn-level parameter data should be based on Figure 2 The parameters for each coil level are given in a specific format. Each cell code represents a type of material, and the table from left to right corresponds to the material arrangement of the coil from the inside out. The first character of each cell code indicates the material type; there are four types of materials in the pie: main wire (w), screen wire (s), shaft oil channel (c), and filler (f). The second character of each cell code indicates the sub-type of that material, such as type 2 main wire (w2) and type 1 screen wire (s1). [The remaining text appears to be incomplete and requires further context.] Figure 2 Based on this, the corresponding radial and axial dimensions of the material, as well as the material parameters, should also be provided. Material parameters include relative permittivity, relative permeability, and conductivity. The turn-level parameter codes and the corresponding material parameters should correspond one-to-one as shown in the example table of turn-level parameter specifications in Table 1.

[0071] Table 1

[0072]

[0073] In this embodiment, by performing a fine-grained hierarchical division of the transformer pancake winding structure and constructing corresponding curve trajectories and models based on the parameter data of each level, not only is a precise description of the transformer pancake winding structure achieved, but the accuracy and reliability of the model are also significantly improved. This parametric description method can realistically reflect the electromagnetic characteristics of the winding, providing a powerful tool for the design, analysis, and optimization of transformers. Furthermore, its flexibility and versatility allow it to adapt to the modeling needs of pancake windings of different types and specifications, demonstrating broad application prospects.

[0074] In one embodiment, the winding method includes continuous winding, tangled winding, and inner-screen winding; obtaining the winding code for different winding methods includes: using numbers to represent the conductor transposition method, the winding group of parallel-wound conductors, and the number of parallel-wound conductors in continuous winding to obtain the winding code for continuous winding; using numbers to represent the main wire transposition method, the number of turns of parallel-wound main wires, the number of parallel-wound main wires, the number of short-circuited pancakes of screen wires, and the number of turns of screen wires in inner-screen winding to obtain the winding code for inner-screen winding; using numbers to represent the number of interlacing, conductor transposition method, number of tangled groups, the number of turns jointly wound by the pancake group and the tangled group, whether the tangled group is always wound in pairs, and the number of parallel-wound conductors of the pancake group and the reverse pancake group to obtain the winding code for tangled winding.

[0075] Within a single winding, at least one winding method can be used. Continuous winding refers to using one or more parallel conductors (using transposition techniques) to continuously wind one turn after another, starting from a single coil. After winding one coil, a transition wire is used to move to the next coil to continue winding until the entire winding is completed. Electrically, the turns and coils are simply connected in series. Internal shielding winding involves inserting non-open-circuit shielding wires that do not carry operating current into the conductors of a conventional continuous coil. These shielding wires are not connected to the conductors; the end of the shielding wire closest to the iron core post is suspended, while the end furthest from the iron core post is connected to the shielding wires of other coils. Twisted winding refers to using one or more parallel wires, starting from the first coil, winding at least one turn, then passing through a transition wire to the second coil to continue winding at least one turn, then passing through the transition wire back to the first coil to continue winding, and so on, repeating the sequence of first coil - second coil - first coil - second coil until the entire winding is completed.

[0076] Alternatively, the continuous winding code is:

[0077]

[0078] in, The number represents the transposition method of the conductor. If all conductors are transposed, then... Equal to the number of turns; The number of turns of the wire wound together; The number of wires wound together; Equal to the number of turns; These are preset symbols with no real meaning and can be replaced with other symbols.

[0079] Alternatively, the inner-screen winding code is:

[0080]

[0081] in, The numbers represent the main line transposition method. If all numbers are transposed, then... Equal to the number of turns; The number of turns to be fired for the main wire; The main line is wrapped around the number of loops; Equal to the number of turns wound; and These are preset symbols with no real meaning and can be replaced with other symbols. The number represents the number of screen line shorting pieces. For example, the number 2 indicates that two consecutive screen line pieces are shorted (i.e., pieces 1 and 2), and the number 4 indicates that two screen line pieces are shorted (i.e., pieces 1 and 4). This refers to the number of turns of the screen cable.

[0082] Alternatively, the tangled winding code is as follows:

[0083]

[0084] in, The number of flower arrangements indicates whether the current cake group and the conflicted group have flower arrangements. If there are no flower arrangements, then... If the value is 1, then if i turns are inserted... Let i+1; The numbers represent the main line transposition method. If all numbers are transposed, then... Equal to the number of turns; The number of entangled groups is generally 2, namely the original pie group and the reverse pie group; The number of turns to be wound together for this disc group and the tangled group; Equal to the number of turns wound; The number represents whether the tangled group is always wound in pairs, where 0 indicates a pair and 1 indicates the existence of a single tangled group or a reversed tangled group. The number of wires wound for this disc group and the reverse disc group; and These are preset symbols with no real meaning and can be replaced with other symbols.

[0085] In this embodiment, by defining continuous, inner-screen, and tangled coil winding codes respectively, complex winding structures such as the number of turns, transposition, number of turns, and interlacing can be accurately described using only 6 or fewer numbers. This makes the parametric description of transformer coil windings more accurate and standardized. This standardized description method not only facilitates engineers' understanding and operation but also provides a solid foundation for subsequent automated modeling and analysis. In practical applications, engineers only need to write winding codes according to established rules based on the actual winding situation to quickly and accurately describe the winding method of transformer coil windings. This innovative method greatly improves the efficiency of transformer design and analysis, providing strong technical support for the rapid development of the power industry.

[0086] In one embodiment, a turn curve trajectory is constructed based on the turn-level parameter data and the pancake-level parameter data; at least one turn curve model is obtained based on the turn curve trajectory, including: constructing the turn curve trajectory based on the turn arrangement order in the turn-level parameter data and the winding code and unwinding number in the pancake-level parameter data, wherein the center, curve radius, and number of turns of the turn curve trajectory all meet preset conditions; and sweeping the cross-section corresponding to the turn curve trajectory along the trajectory to obtain at least one turn curve model.

[0087] The preset conditions for the center, radius, and number of turns of the coil curve trajectory are as follows: for the same coil, the centers of each segment of the coil curve trajectory coincide, the number of turns is less than or equal to 1, and the radius of the curve gradually increases or decreases from the starting point according to the coil structure until the ending point. The distance by which the starting and ending points of the coil curve trajectory increase or decrease in amplitude is called the offset. Each segment of the coil curve trajectory has an offset.

[0088] Optionally, based on the radial width and axial height in the turn-level parameter data, the cross section corresponding to the turn curve trajectory is swept along the trajectory, and each turn curve trajectory corresponds to each turn curve model, thereby obtaining at least one turn curve model.

[0089] In this embodiment, a turn curve trajectory is constructed based on the turn arrangement order in the turn-level parameter data and the winding code and retraction number in the turn-plate-level parameter data. A turn curve model is then obtained based on this trajectory, achieving accurate simulation of the turn structure. The generated turn curve model accurately reflects the actual arrangement and connection of the turns in the winding. Furthermore, by sweeping the cross-section corresponding to the turn curve trajectory along the trajectory, a turn curve model matching the actual turn shape and size can be obtained, providing accurate basic data for subsequent winding modeling and analysis. This parametric modeling method not only improves the accuracy and efficiency of modeling but also provides strong support for the optimized design and performance analysis of transformers.

[0090] In one embodiment, constructing a coil-turn arc trajectory based on coil-level parameter data includes: correcting the coordinates of the positive or negative coil model based on keywords such as conductor transposition method in the winding code of the coil-level parameter data and the coil spacing in the coil-level parameter data; and constructing the coil-turn arc trajectory based on the corrected coordinates of the positive or negative coil model.

[0091] For example, based on keywords such as wire transposition method in the winding code of the coil level parameter data and the coil spacing in the coil level parameter data, the coordinates of the positive or negative coil model on the z-axis are corrected. Based on the corrected coordinates of the positive or negative coil model on the z-axis, a coil arc trajectory that can connect the positive or negative coil model is constructed.

[0092] In this embodiment, the coordinates of the positive or negative wire pancake model are corrected based on the keywords of the winding code in the wire pancake level parameter data and the wire pancake spacing in the coil level parameter data. The wire turn arc trajectory is constructed based on the corrected coordinates, providing a reliable connection basis for the double wire pancake model, realizing accurate planning of the wire turn connection path, and effectively solving the model docking error caused by the difference in winding method, ensuring that the constructed wire turn arc trajectory is highly consistent with the actual winding structure.

[0093] In one embodiment, obtaining at least one second-line-turn arc model based on coil-level parameter data; and connecting at least one double-line pie model using the at least one second-line-turn arc model to obtain a single-coil model includes: correcting the coordinates of at least one double-line pie model based on coil-level parameter data; constructing a line-turn curve trajectory based on the coordinates of the at least one double-line pie model; sweeping the cross-section corresponding to the line-turn arc trajectory along the trajectory to obtain at least one line-turn arc model; and connecting at least one double-line pie model using the at least one line-turn arc model to obtain a single-coil model.

[0094] For example, based on the coil inner diameter, coil outer diameter, distance from the bottom of the coil to the upper surface of the lower yoke, coil height, number of coil discs, and spacing of coil discs in the coil-level parameter data, while ensuring that the inner diameter, outer diameter, distance from the bottom of the coil to the upper surface of the lower yoke, coil height, number of coil discs, and spacing of coil discs are consistent, the coordinates of at least one double coil disc model on the z-axis are adjusted; a coil curve trajectory is constructed based on the coordinates of at least one double coil disc model, and the cross-section corresponding to the coil arc trajectory is swept along the trajectory to construct a three-dimensional coil entity with a two-dimensional curve. The length and width of the cross-section correspond to the radial width and axial height of the coil parameters, respectively, to obtain the coil arc model. The wire ends of two double coil disc models are connected using the coil arc model until all double coil disc models are connected in series to obtain a single coil model.

[0095] Furthermore, based on at least one single-coil model, the coordinates of at least one single-coil model are adjusted according to the number of single-phase coils, the number of phases, and the spacing between the iron core main columns in the coil-level parameter data to construct a multi-coil model. In this model, windings of the same phase share a common center, and the center distance between windings of non-same-phase coils is equal to the spacing between the iron core main columns.

[0096] In this embodiment, the coordinates of the double-circuit disc model are corrected according to the coil-level parameter data, and the coil curve trajectory is constructed based on the corrected coordinates to obtain the coil arc model. Finally, these models are used to connect the double-circuit disc model into a single coil model, thereby realizing accurate modeling of the single coil structure of the transformer.

[0097] Next reference Figure 3 The present invention will be illustrated by a specific embodiment of a method for parametric description and modeling of a transformer pancake winding.

[0098] The pancake winding of a transformer consists of at least one coil, which consists of at least one double-coil pancake. The double-coil pancake consists of a positive coil and a negative coil. The coil consists of at least one wire turn with different winding methods. In order to describe the pancake winding in detail, the structure of the pancake winding of the transformer is divided into coil level, coil level and wire turn level. The pancake winding of the transformer is parametrically described and modeled in three levels.

[0099] The following parameters are given for describing the coil-level parameters of a transformer disc winding: number of single-phase coils, number of phases, spacing between iron core main columns, inner diameter of coils, outer diameter of coils, distance from the bottom of the coil to the upper surface of the lower yoke, coil height, number of coils, spacing between coils, coil height, and number of taps.

[0100] The number of rollbacks and the firing code are given to describe the wire-plate level parameters of the transformer disc winding.

[0101] The winding methods include continuous winding, tangled winding, and inner screen winding; the burning code can use 6 or less numbers to accurately describe and handle complex winding structures such as the number of turns, transposition, number of turns, and interlacing.

[0102] The material arrangement sequence, radial and axial dimensions, and material parameters are given to describe the turn-level parameters of the transformer disc winding.

[0103] In summary, a three-level parametric description of the transformer's pancake winding—coil level, pancake level, and turn level—is achieved. Next, parametric modeling will be performed based on the provided parameters.

[0104] Based on the turn-level parameters, a curve trajectory is constructed, and a three-dimensional turn solid is formed by sweeping the turn cross-section. Turn modeling consists of two steps: first, constructing the curve trajectory; second, sweeping the turn cross-section to form a solid. There are two types of curve trajectories: planar spiral curves and connecting arcs. Planar spiral curves, or turn curve trajectories, are used to describe the distribution of turn wires within a pie. For the same pie, the centers of each turn curve trajectory coincide, the number of turns is less than or equal to 1, and the curve radius gradually increases or decreases from the starting point according to the pie structure until the endpoint. Connecting arcs, or turn arc trajectories, are used to describe the connection of wires between pie sections. It should be ensured that when connecting two curve endpoints, the turn arc trajectory is tangent to the curve at the endpoint, and the three-dimensional coordinates smoothly transition between the two endpoints. After each segment of the coil curve trajectory or coil arc trajectory is constructed, the corresponding cross section of the coil is swept along the trajectory to realize the construction of a three-dimensional coil entity from a two-dimensional curve. If the coil is wound with flat wire, the length and width of the cross section correspond to the radial width and axial height of the coil parameters, respectively. At this time, the coil-level modeling is completed.

[0105] The coil is constructed based on the number of rolls, the firing code, and the material arrangement order. Each turn of a single coil model has the same center, with center coordinates (0, 0, 0). Based on keywords such as the conductor transposition method in the winding code and the coil spacing parameter, the conductor ends of two coils are connected using a coil-arc model to form a double-coil model. At this point, the centers of each turn in the double-coil model are coaxial, with center coordinates (0, 0, coil spacing) or (0, 0, 0). This completes the coil-level modeling.

[0106] Construct single-coil and multi-coil models based on coil-level parameters. Determine the number of double-coil pie models to be obtained based on the coil-level parameters, and then repeat the above steps for obtaining double-coil pie models until a sufficient number of double-coil pie models are obtained. Stop repeating the process and proceed to the next step. Obtain at least one wire-turn arc model to connect with the at least one double-coil pie model to obtain a single-coil model.

[0107] The number of single-coil models to be obtained is determined based on the coil-level parameters. The process of obtaining single-coil models is then repeated until a sufficient number are acquired. At this point, the process stops, and the coordinates of the single-coil models are corrected. Finally, a multi-coil model is obtained, which is the complete transformer winding model that must be acquired. This completes the wire-pie level parametric modeling.

[0108] It should be understood that although the steps in the flowcharts of the embodiments described above are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some steps in the flowcharts of the embodiments described above may include multiple steps or multiple stages. These steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these steps or stages is not necessarily sequential, but can be performed alternately or in turn with other steps or at least some of the steps or stages in other steps. It is understood that the steps in different embodiments can be freely combined as needed, and all non-contradictory solutions formed by such combinations are within the scope of protection of this application.

[0109] Based on the same inventive concept, this application also provides a transformer pancake winding parameterization and modeling device for implementing the above-mentioned transformer pancake winding parameterization description and modeling method. The solution provided by this device is similar to the solution described in the above method. Therefore, the specific limitations of one or more transformer pancake winding parameterization description and modeling device embodiments provided below can be found in the limitations of the transformer pancake winding parameterization description and modeling method described above, and will not be repeated here.

[0110] In one exemplary embodiment, such as Figure 4 As shown, a parametric description and modeling device 400 for a transformer disc winding is provided, including: an acquisition module 402, a connection module 404, and a construction module 406, wherein:

[0111] The acquisition module 402 is used to acquire at least one double-circuit pancake model. The steps for acquiring the double-circuit pancake model include: dividing the pancake winding structure of the transformer into coil level, pancake level, and turn level, and acquiring coil level parameter data, pancake level parameter data, and turn level parameter data that can describe the pancake winding structure of the transformer; constructing turn curve trajectories based on turn level parameter data and pancake level parameter data; acquiring at least one turn curve model based on the turn curve trajectory; constructing a positive pancake model and a negative pancake model based on at least one turn curve model; constructing a turn arc trajectory based on pancake level parameter data; acquiring a first turn arc model based on the turn arc trajectory; and connecting the positive pancake model and the negative pancake model using the first turn arc model to obtain the double-circuit pancake model.

[0112] The connection module 404 is used to obtain at least one second-line turn arc model based on the coil-level parameter data; and to connect the at least one second-line turn arc model to the at least one double-line disc model to obtain a single-coil model.

[0113] The construction module 406 is used to repeatedly execute the steps of obtaining at least one double-wire pancake model and obtaining a single-coil model to obtain at least one single-coil model. Based on the coil-level parameter data, a multi-coil model is constructed based on at least one single-coil model. The multi-coil model is a transformer pancake winding model.

[0114] In one embodiment, the transformer's disc winding includes at least one coil, the coil including at least one double-coil disc, the double-coil disc including a positive coil and a negative coil, and the coil disc including at least one turn using different winding methods; the turn-level parameter data includes: the number of single-phase coils, the number of phases, the spacing between the iron core main columns, the inner diameter of the coil, the outer diameter of the coil, the distance from the bottom of the coil to the upper surface of the lower yoke, the coil height, the number of coil discs, the spacing between coil discs, the height of the coil disc, and the number of taps; the coil-level parameter data includes: the winding code and the number of taps for different winding methods; the turn-level parameter data includes: the arrangement order, radial and axial dimensions, and material parameters within each coil space.

[0115] In one embodiment, the winding method includes continuous winding, tangled winding, and inner screen winding; the acquisition module is further used to acquire the winding code of continuous winding by using numbers to represent the conductor transposition method, the winding group of parallel-wound conductors, and the number of parallel-wound conductors; to acquire the winding code of inner screen winding by using numbers to represent the main wire transposition method, the number of turns of parallel-wound main wires, the number of parallel-wound main wires, the number of short-circuited pancakes of screen wires, and the number of turns of screen wires; and to acquire the winding code of tangled winding by using numbers to represent the number of interlacing, conductor transposition method, number of tangled groups, the number of turns jointly wound by the pancake group and the tangled group, whether the tangled group is always wound in pairs, and the number of parallel-wound conductors of the pancake group and the reverse pancake group.

[0116] In one embodiment, the acquisition module is further configured to construct a turn curve trajectory based on the turn arrangement order in the turn-level parameter data and the winding code and unwinding number in the turn-level parameter data, wherein the center, curve radius and number of turns of the turn curve trajectory all meet preset conditions; and to sweep the cross section corresponding to the turn curve trajectory along the trajectory to acquire at least one turn curve model.

[0117] In one embodiment, the acquisition module is further configured to correct the coordinates of the positive or negative wire pancake model based on keywords such as wire transposition method in the winding code in the wire pancake level parameter data and the wire pancake spacing in the coil level parameter data; and to construct the wire turn arc trajectory based on the corrected coordinates of the positive or negative wire pancake model.

[0118] In one embodiment, the connection module is further configured to correct the coordinates of at least one double-circuit pie model based on coil-level parameter data; construct a coil curve trajectory based on the coordinates of at least one double-circuit pie model; sweep the cross-section corresponding to the coil arc trajectory along the trajectory to obtain at least one coil arc model; and connect at least one double-circuit pie model using at least one coil arc model to obtain a single-coil model.

[0119] Each module in the aforementioned parametric modeling device for transformer pancake windings can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the computer device's memory as software, so that the processor can call and execute the corresponding operations of each module.

[0120] In one exemplary embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 5 As shown, the computer device includes a processor, memory, input / output interfaces, a communication interface, a display unit, and an input device. The processor, memory, and input / output interfaces are connected via a system bus, and the communication interface, display unit, and input device are also connected to the system bus via the input / output interfaces. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs stored in the non-volatile storage media. The input / output interfaces are used for exchanging information between the processor and external devices. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, Near Field Communication (NFC), or other technologies. When executed by the processor, the computer program implements a parametric modeling method for transformer pancake windings. The display unit is used to create a visually visible image and can be a display screen, a projection device, or a virtual reality imaging device. The display screen can be an LCD screen or an e-ink screen. The input device of the computer device can be a touch layer covering the display screen, or buttons, trackballs, or touchpads set on the casing of the computer device, or external keyboards, touchpads, or mice, etc.

[0121] Those skilled in the art will understand that Figure 5The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.

[0122] In one exemplary embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the following steps:

[0123] The process of obtaining at least one double-circuit pancake model includes the following steps: dividing the pancake winding structure of the transformer into coil level, pancake level, and turn level, and obtaining coil level parameter data, pancake level parameter data, and turn level parameter data that can describe the pancake winding structure of the transformer; constructing turn curve trajectories based on turn level parameter data and pancake level parameter data; obtaining at least one turn curve model based on the turn curve trajectory; constructing a positive pancake model and a negative pancake model based on at least one turn curve model; constructing turn arc trajectory based on pancake level parameter data; obtaining a first turn arc model based on the turn arc trajectory; and connecting the positive pancake model and the negative pancake model using the first turn arc model to obtain the double-circuit pancake model.

[0124] Based on the coil-level parameter data, obtain at least one second-line turn arc model; use at least one second-line turn arc model to connect at least one double-line disc model to obtain a single-coil model;

[0125] Repeat the steps of obtaining at least one double-coil model and obtaining a single-coil model to obtain at least one single-coil model. Based on the coil-level parameter data, construct a multi-coil model, which is a transformer pancake winding model.

[0126] In one embodiment, when the processor executes the computer program, it further implements the following steps: using numbers to represent the wire transposition method of continuous winding, the winding group of parallel-wound wires, and the number of parallel-wound wires, to obtain the winding code of continuous winding; using numbers to represent the main wire transposition method of inner-screen winding, the number of turns of parallel-wound main wires, the number of parallel-wound main wires, the number of short-circuited pancakes of screen wires, and the number of turns of screen wires, to obtain the winding code of tangled winding; using numbers to represent the number of interlacing, wire transposition method, number of tangled groups, the number of turns jointly wound by the pancake group and the tangled group, whether the tangled group is always wound in pairs, and the number of parallel-wound wires of the pancake group and the reverse pancake group, to obtain the winding code of tangled winding.

[0127] In one embodiment, when the processor executes the computer program, it further performs the following steps: constructing a turn curve trajectory based on the turn arrangement order in the turn-level parameter data and the winding code and unwinding number in the turn-level parameter data, wherein the center, curve radius and number of turns of the turn curve trajectory all meet preset conditions; and sweeping the cross section corresponding to the turn curve trajectory along the trajectory to obtain at least one turn curve model.

[0128] In one embodiment, when the processor executes the computer program, it further performs the following steps: correcting the coordinates of the positive or negative wire pancake model based on keywords such as wire transposition method in the winding code in the wire pancake level parameter data and the wire pancake spacing in the coil level parameter data; and constructing the wire turn arc trajectory based on the corrected coordinates of the positive or negative wire pancake model.

[0129] In one embodiment, when the processor executes the computer program, it further performs the following steps: correcting the coordinates of at least one double-circuit pie model based on coil-level parameter data; constructing a coil curve trajectory based on the coordinates of at least one double-circuit pie model; sweeping the cross-section corresponding to the coil arc trajectory along the trajectory to obtain at least one coil arc model; and connecting at least one double-circuit pie model using at least one coil arc model to obtain a single-coil model.

[0130] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor:

[0131] The process of obtaining at least one double-circuit pancake model includes the following steps: dividing the pancake winding structure of the transformer into coil level, pancake level, and turn level, and obtaining coil level parameter data, pancake level parameter data, and turn level parameter data that can describe the pancake winding structure of the transformer; constructing turn curve trajectories based on turn level parameter data and pancake level parameter data; obtaining at least one turn curve model based on the turn curve trajectory; constructing a positive pancake model and a negative pancake model based on at least one turn curve model; constructing turn arc trajectory based on pancake level parameter data; obtaining a first turn arc model based on the turn arc trajectory; and connecting the positive pancake model and the negative pancake model using the first turn arc model to obtain the double-circuit pancake model.

[0132] Based on the coil-level parameter data, obtain at least one second-line turn arc model; use at least one second-line turn arc model to connect at least one double-line disc model to obtain a single-coil model;

[0133] Repeat the steps of obtaining at least one double-coil model and obtaining a single-coil model to obtain at least one single-coil model. Based on the coil-level parameter data, construct a multi-coil model, which is a transformer pancake winding model.

[0134] In one embodiment, when the computer program is executed by the processor, it further implements the following steps: obtaining the winding code for continuous winding by using numbers to represent the wire transposition method of continuous winding, the winding group of parallel winding, and the number of parallel windings of the wire; obtaining the winding code for inner-screen winding by using numbers to represent the main wire transposition method of inner-screen winding, the number of turns of parallel winding of the main wire, the number of parallel windings of the main wire, the number of short-circuited pancakes of the screen wire, and the number of turns of the screen wire; obtaining the winding code for twisted winding by using numbers to represent the number of interlacing, wire transposition method, number of tangled groups, the number of turns jointly wound by the pancake group and the tangled group, whether the tangled group is always wound in pairs, and the number of parallel windings of the wires of the pancake group and the reverse pancake group.

[0135] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: constructing a turn curve trajectory based on the turn arrangement order in the turn-level parameter data and the winding code and unwinding number in the turn-level parameter data, wherein the center, curve radius and number of turns of the turn curve trajectory all meet preset conditions; and sweeping the cross section corresponding to the turn curve trajectory along the trajectory to obtain at least one turn curve model.

[0136] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: correcting the coordinates of the positive or negative wire pancake model based on keywords such as wire transposition method in the winding code in the wire pancake level parameter data and the wire pancake spacing in the coil level parameter data; and constructing the wire turn arc trajectory based on the corrected coordinates of the positive or negative wire pancake model.

[0137] In one embodiment, the coordinates of at least one double-circuit pie model are corrected based on coil-level parameter data; a coil curve trajectory is constructed based on the coordinates of the at least one double-circuit pie model; the cross-section corresponding to the coil arc trajectory is swept along the trajectory to obtain at least one coil arc model; and at least one double-circuit pie model is connected using the at least one coil arc model to obtain a single-coil model.

[0138] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, performs the following steps:

[0139] The process of obtaining at least one double-circuit pancake model includes the following steps: dividing the pancake winding structure of the transformer into coil level, pancake level, and turn level, and obtaining coil level parameter data, pancake level parameter data, and turn level parameter data that can describe the pancake winding structure of the transformer; constructing turn curve trajectories based on turn level parameter data and pancake level parameter data; obtaining at least one turn curve model based on the turn curve trajectory; constructing a positive pancake model and a negative pancake model based on at least one turn curve model; constructing turn arc trajectory based on pancake level parameter data; obtaining a first turn arc model based on the turn arc trajectory; and connecting the positive pancake model and the negative pancake model using the first turn arc model to obtain the double-circuit pancake model.

[0140] Based on the coil-level parameter data, obtain at least one second-line turn arc model; use at least one second-line turn arc model to connect at least one double-line disc model to obtain a single-coil model;

[0141] Repeat the steps of obtaining at least one double-coil model and obtaining a single-coil model to obtain at least one single-coil model. Based on the coil-level parameter data, construct a multi-coil model, which is a transformer pancake winding model.

[0142] In one embodiment, when the computer program is executed by the processor, it further implements the following steps: obtaining the winding code for continuous winding by using numbers to represent the wire transposition method of continuous winding, the winding group of parallel winding, and the number of parallel windings of the wire; obtaining the winding code for inner-screen winding by using numbers to represent the main wire transposition method of inner-screen winding, the number of turns of parallel winding of the main wire, the number of parallel windings of the main wire, the number of short-circuited pancakes of the screen wire, and the number of turns of the screen wire; obtaining the winding code for twisted winding by using numbers to represent the number of interlacing, wire transposition method, number of tangled groups, the number of turns jointly wound by the pancake group and the tangled group, whether the tangled group is always wound in pairs, and the number of parallel windings of the wires of the pancake group and the reverse pancake group.

[0143] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: constructing a turn curve trajectory based on the turn arrangement order in the turn-level parameter data and the winding code and unwinding number in the turn-level parameter data, wherein the center, curve radius and number of turns of the turn curve trajectory all meet preset conditions; and sweeping the cross section corresponding to the turn curve trajectory along the trajectory to obtain at least one turn curve model.

[0144] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: correcting the coordinates of the positive or negative wire pancake model based on keywords such as wire transposition method in the winding code in the wire pancake level parameter data and the wire pancake spacing in the coil level parameter data; and constructing the wire turn arc trajectory based on the corrected coordinates of the positive or negative wire pancake model.

[0145] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: correcting the coordinates of at least one double-circuit pie model based on coil-level parameter data; constructing a coil curve trajectory based on the coordinates of at least one double-circuit pie model; sweeping the cross-section corresponding to the coil arc trajectory along the trajectory to obtain at least one coil arc model; and connecting at least one double-circuit pie model using at least one coil arc model to obtain a single-coil model.

[0146] Those skilled in the art will understand that all or part of the processes in the methods of the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium, and when executed, it can include the processes of the embodiments of the above methods. Any references to memory, databases, 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 many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, artificial intelligence (AI) processors, etc., and are not limited to these.

[0147] The technical features of the above embodiments can be combined in any way. For the sake of brevity, 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.

[0148] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.

Claims

1. A method for parametric description and modeling of transformer disc windings, characterized in that, The method includes: The process of obtaining at least one double-circuit pancake model includes: dividing the pancake winding structure of a transformer into coil level, pancake level, and turn level, and obtaining coil level parameter data, pancake level parameter data, and turn level parameter data that can describe the pancake winding structure of the transformer; constructing a turn curve trajectory based on the turn level parameter data and the pancake level parameter data; obtaining at least one turn curve model based on the turn curve trajectory; constructing a positive pancake model and a negative pancake model based on the at least one turn curve model; constructing a turn arc trajectory based on the pancake level parameter data; obtaining a first turn arc model based on the turn arc trajectory; and connecting the positive pancake model and the negative pancake model using the first turn arc model to obtain a double-circuit pancake model. Based on the coil-level parameter data, at least one second-line turn arc model is obtained; the at least one second-line turn arc model is used to connect the at least one double-line disc model to obtain a single-coil model; Repeat the steps of obtaining at least one double-coil model and obtaining a single-coil model to obtain at least one single-coil model. Based on the coil-level parameter data, construct a multi-coil model, which is a transformer pancake winding model.

2. The method according to claim 1, characterized in that, The transformer's disc winding includes at least one coil, the coil including at least one double-coil disc, the double-coil disc including a positive coil and a negative coil, and the coil disc including at least one turn using different winding methods; the turn-level parameter data includes: number of single-phase coils, number of phases, spacing between iron core main columns, inner diameter of coil, outer diameter of coil, distance from the bottom of coil to the upper surface of the lower yoke, coil height, number of coil discs, spacing between coil discs, coil height, and number of turns; the coil-level parameter data includes: winding codes and number of turns for different winding methods; the turn-level parameter data includes: the arrangement order, radial and axial dimensions, and material parameters within each coil space.

3. The method according to claim 2, characterized in that, The winding methods include continuous winding, tangled winding, and inner-screen winding; obtaining the winding codes for different winding methods includes: The winding code for continuous winding is obtained by using numbers to represent the conductor transposition method, the winding group of the parallel-wound conductor, and the number of parallel-wound conductors. The winding code for inner-screen winding is obtained by using numbers to represent the main wire transposition method, the number of turns of the main wire, the number of main wires in parallel, the number of short-circuit discs of the screen wire, and the number of turns of the screen wire. The winding code for tangled winding is obtained by using numbers to represent the number of interlacing, wire transposition method, number of tangled groups, number of turns of the current pancake group and the tangled group together, whether the tangled group is always wound in pairs, and the number of wires of the current pancake group and the reverse pancake group.

4. The method according to claim 1, characterized in that, The circuit curve trajectory is constructed based on the circuit-turn level parameter data and the circuit-panel level parameter data; At least one line-turn curve model is obtained based on the line-turn curve trajectory, including: Based on the turn arrangement order in the turn-level parameter data, and the winding code and unwinding number in the turn-level parameter data, a turn curve trajectory is constructed, wherein the center, curve radius and number of turns of the turn curve trajectory all meet preset conditions; The cross section corresponding to the curve trajectory is swept along the trajectory to obtain at least one curve model.

5. The method according to claim 1, characterized in that, The step of constructing the arc trajectory of the line based on the line-level parameter data includes: Based on the keywords of the conductor transposition method in the winding code of the coil level parameter data and the coil spacing in the coil level parameter data, the coordinates of the positive coil model or the negative coil model are corrected. Based on the coordinates of the corrected positive or negative pie chart model, a loop arc trajectory is constructed.

6. The method according to claim 1, characterized in that, The step is to obtain at least one second coil arc model based on the coil-level parameter data; By connecting the at least one second-wire arc model with the at least one double-wire disc model to obtain a single-coil model, including: Based on the coil-level parameter data, correct the coordinates of the at least one double-line pie model; Construct the loop curve trajectory based on the coordinates of the at least one double-line pie model; The cross section corresponding to the arc trajectory of the line-turn curve is swept along the trajectory to obtain at least one line-turn curve model; By connecting the at least one coil arc model with the at least one double-coil pancake model, a single coil model is obtained.

7. A parametric description and modeling device for transformer disc windings, characterized in that, The device includes: An acquisition module is used to acquire at least one double-circuit pancake model. The steps for acquiring the double-circuit pancake model include: dividing the pancake winding structure of the transformer into coil level, pancake level, and turn level; sequentially acquiring coil level parameter data, pancake level parameter data, and turn level parameter data; constructing turn curve trajectories based on turn level parameter data and pancake level parameter data; acquiring at least one turn curve model based on the turn curve trajectory; constructing a positive pancake model and a negative pancake model based on the at least one turn curve model; constructing a turn arc trajectory based on the pancake level parameter data; acquiring a first turn arc model based on the turn arc trajectory; and connecting the positive pancake model and the negative pancake model using the first turn arc model to obtain the double-circuit pancake model. The connection module is used to obtain at least one second-line turn arc model based on coil-level parameter data; and to connect at least one double-line disc model using at least one second-line turn arc model to obtain a single-coil model. The module is used to repeatedly execute the steps of obtaining at least one double-coil model and obtaining a single-coil model to obtain at least one single-coil model. Based on the coil-level parameter data, a multi-coil model is constructed, which is a transformer pancake winding model.

8. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the method according to any one of claims 1 to 6.

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

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

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