CN107368653A - The two dimensional finite element emulation mode and system of a kind of Magnetic Leakage Field of Transformer - Google Patents
The two dimensional finite element emulation mode and system of a kind of Magnetic Leakage Field of Transformer Download PDFInfo
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- CN107368653A CN107368653A CN201710597165.5A CN201710597165A CN107368653A CN 107368653 A CN107368653 A CN 107368653A CN 201710597165 A CN201710597165 A CN 201710597165A CN 107368653 A CN107368653 A CN 107368653A
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/20—Design optimisation, verification or simulation
- G06F30/23—Design optimisation, verification or simulation using finite element methods [FEM] or finite difference methods [FDM]
Abstract
This application discloses the two dimensional finite element emulation mode and system of a kind of Magnetic Leakage Field of Transformer, wherein method includes：The each internal structure of transformer is obtained, the three-dimensional finite element model of Magnetic Leakage Field of Transformer is established according to internal structure；Exciting current is applied to model and obtains distribution and the size of Magnetic Leakage Field of Transformer；The two-dimensional finite element model of Magnetic Leakage Field of Transformer is established according to internal structure；Apply exciting current and obtain the distribution of Magnetic Leakage Field of Transformer and size in two-dimensional finite element model；According to the distribution of the Magnetic Leakage Field of Transformer of threedimensional model two dimensional model corresponding with the position correspondence relation calculating threedimensional model of two dimensional model and size；Calculate the correction factor of exciting current in two dimensional model；The exciting current of two dimensional model is compensated according to correction factor, the distribution of Magnetic Leakage Field of Transformer and size in new two dimensional model is calculated.The technical scheme of the application can obtain distribution and the size of Magnetic Leakage Field of Transformer in accurate two-dimensional finite element model while saving and calculating with storage resource.
Description
Technical field
The application is related to transformer technology field, more particularly to a kind of two dimensional finite element emulation mode of Magnetic Leakage Field of Transformer
And system.
Background technology
Transformer has the critical function of shift voltage in power system, therefore acts on particularly significant.And with electricity
The capacity of Force system gradually increases, in the growth of the fortune main transformer time limit, the stability of Transformer Winding and the damaged condition of transformer
As the emphasis of association area research.And Magnetic Leakage Field of Transformer is to study Transformer Winding job stability and the weight of damaged condition
Will foundation.
In the prior art generally by being emulated to Magnetic Leakage Field of Transformer, to detect the stability of Transformer Winding and change
The damaged condition of depressor.With the continuous development of computer technology, the three-dimensional artificial mould of transformer is typically set up in the prior art
The Magnetic fluxleakage distribution situation of type research transformer.Specifically, the structure such as iron core, winding and folder by establishing inside transformer
Threedimensional model, assign the attribute of the parameter such as material, shape and annexation corresponding to each structure respectively, and further to transformation
Device winding sets the sense of current, applies exciting current by external circuit, so as to obtain Magnetic Leakage Field of Transformer by simulation software
Distribution and size, and then according to the distribution of Magnetic Leakage Field of Transformer and the job stability and damaged condition of size research transformer.
Although the three-dimensional simulation model of Magnetic Leakage Field of Transformer is relative to distribution of the two-dimensional simulation model to Magnetic Leakage Field of Transformer
Research is more accurate, however, the amount of calculation of the three-dimensional simulation model of transformer is larger, calculating try to achieve stray transformer flux field distribution and
Calculating overlong time needed for size, and EMS memory occupation is too high, exceeds well over two-dimensional simulation model.
The content of the invention
This application provides the two dimensional finite element emulation mode and system of a kind of Magnetic Leakage Field of Transformer, to solve prior art
The problem of three-dimensional emulation method of middle Magnetic Leakage Field of Transformer calculates overlong time, and EMS memory occupation is too high.
In a first aspect, this application provides a kind of two dimensional finite element emulation mode of Magnetic Leakage Field of Transformer, including：
Each internal structure of transformer is obtained, the three of Magnetic Leakage Field of Transformer is established according to each internal structure emulation
Tie up FEM model；
Exciting current is applied to the three-dimensional finite element model, transformer in the three-dimensional finite element model is calculated and leaks
The distribution in magnetic field and size；
The two-dimensional finite element model of Magnetic Leakage Field of Transformer is established according to the emulation of each internal structure of the transformer；
The exciting current is applied to the two-dimensional finite element model, transformation in the two-dimensional finite element model is calculated
The distribution of device stray field and size；
According to the three-dimensional finite element model and the position correspondence relation of the two-dimensional finite element model, the three-dimensional is calculated
Distribution and the size of the Magnetic Leakage Field of Transformer of two-dimensional finite element model are corresponded in FEM model；
According to the distribution for the Magnetic Leakage Field of Transformer that two-dimensional finite element model is corresponded in the three-dimensional finite element model and size,
Calculate the correction factor of exciting current in the two-dimensional finite element model；
Exciting current in the two-dimensional finite element model is compensated according to the correction factor, new two dimension, which is calculated, to be had
Limit the distribution of Magnetic Leakage Field of Transformer and size in meta-model.
It is described according to each internal structure with reference in a first aspect, in the first optional implementation of first aspect
The three-dimensional finite element model of Magnetic Leakage Field of Transformer is established in emulation, including：
The structural parameters of each internal structure of transformer are set, and the structural parameters include shape, size, material, number
Amount and annexation；
The three-dimensional simulation model of each internal structure of the transformer is established according to the structural parameters；
The three-dimensional simulation model of each internal structure is assembled according to the annexation of the inside transformer structure, is made
For the three-dimensional finite element model of the Magnetic Leakage Field of Transformer.
It is described to three-dimensional finite element model with reference in a first aspect, in second of optional implementation of first aspect
Apply exciting current, the distribution of Magnetic Leakage Field of Transformer and size in three-dimensional finite element model is calculated, including：
Preset the umber of turn of the transformer and the connected mode of each coil；
Apply the exciting current of predefined size to the winding of the transformer according to predetermined current direction, simulation obtains described
The close value of main air duct magnetic and Leakage flux distribution cloud atlas of transformer corresponding to exciting current；
According to the close value of the main air duct magnetic and Leakage flux distribution cloud atlas, the distribution of the Magnetic Leakage Field of Transformer and big is calculated
It is small.
It is described according to three-dimensional finite element mould with reference in a first aspect, in the third optional implementation of first aspect
The position correspondence relation of type and the two-dimensional finite element model, calculates and two dimensional finite element mould is corresponded in the three-dimensional finite element model
The distribution of the Magnetic Leakage Field of Transformer of type and size, including：
Section is done according to three-dimensional finite element model described in the position correspondence relation pair, obtains the three-dimensional finite element model
The transformer device structure of middle corresponding two-dimensional finite element model；
It is determined that the distribution of Magnetic Leakage Field of Transformer and size in the transformer device structure of corresponding two-dimensional finite element model.
Second aspect, present invention also provides a kind of two dimensional finite element analogue system of Magnetic Leakage Field of Transformer, including：
Three-dimensional finite element model establishes module, for obtaining each internal structure of transformer, according to each inside
Structure simulation establishes the three-dimensional finite element model of Magnetic Leakage Field of Transformer；
First stray field computing module, for applying exciting current to the three-dimensional finite element model, it is calculated described
The distribution of Magnetic Leakage Field of Transformer and size in three-dimensional finite element model；
Two-dimensional finite element model establishes module, for establishing transformer according to the emulation of each internal structure of the transformer
The two-dimensional finite element model of stray field；
Second stray field computing module, for applying the exciting current to the two-dimensional finite element model, it is calculated
The distribution of Magnetic Leakage Field of Transformer and size in the two-dimensional finite element model；
Three leakages magnetic field computing module, for the position according to the three-dimensional finite element model and the two-dimensional finite element model
Corresponding relation is put, calculates the distribution of the Magnetic Leakage Field of Transformer that two-dimensional finite element model is corresponded in the three-dimensional finite element model and big
It is small；
Correction factor computing module, for according to the transformation that two-dimensional finite element model is corresponded in the three-dimensional finite element model
The distribution of device stray field and size, calculate the correction factor of exciting current in the two-dimensional finite element model；
4th stray field computing module, for compensating the excitation in the two-dimensional finite element model according to the correction factor
Electric current, the distribution of Magnetic Leakage Field of Transformer and size in new two-dimensional finite element model is calculated.
With reference to second aspect, in the first optional implementation of second aspect, the three-dimensional finite element model is built
Formwork erection block, including：
Structural parameters set submodule, the structural parameters of each internal structure for setting transformer, the structure ginseng
Number includes shape, size, material, quantity and annexation；
Three-dimensional artificial module setting up submodule, for establishing each internal structure of the transformer according to the structural parameters
Three-dimensional simulation model；
Three-dimensional finite element model determination sub-module, for described in the annexation assembling according to the inside transformer structure
The three-dimensional simulation model of each internal structure, it is defined as the three-dimensional finite element model of the Magnetic Leakage Field of Transformer.
With reference to second aspect, in second of optional implementation of second aspect, the first leakage field field computation mould
Block, including：
Connected mode presets submodule, for presetting the umber of turn of the transformer and the connected mode of each coil；
Leakage field ASM, for applying swashing for predefined size to the winding of the transformer according to predetermined current direction
Electric current is encouraged, simulation obtains the close value of main air duct magnetic and Leakage flux distribution cloud atlas of transformer corresponding to the exciting current；
Stray field calculating sub module, for according to the close value of the main air duct magnetic and Leakage flux distribution cloud atlas, being calculated described
The distribution of Magnetic Leakage Field of Transformer and size.
With reference to second aspect, in the third optional implementation of second aspect, the three leakages magnetic field calculates mould
Block, including：
Transformer device structure determination sub-module, cut for the three-dimensional finite element model according to the position correspondence relation pair
Face, it is determined that obtaining corresponding to the transformer device structure of two-dimensional finite element model in the three-dimensional finite element model；
Stray field determination sub-module, for determining Magnetic Leakage Field of Transformer in the correspondingly transformer device structure of two-dimensional finite element model
Distribution and size.
The two dimensional finite element simulating scheme for the Magnetic Leakage Field of Transformer that the technical scheme of the application provides, according in transformer
Portion's structure establishes the three-dimensional finite element model of stray transformer flux, then applies exciting current, obtains in the three-dimensional finite element model
The distribution of Magnetic Leakage Field of Transformer and size；And Magnetic Leakage Field of Transformer in two-dimensional finite element model is calculated according to same method
Distribution and size；Exciting current is applied to the three-dimensional finite element model, transformation in the three-dimensional finite element model is calculated
The distribution of device stray field and size；Finally by the Magnetic Leakage Field of Transformer that two-dimensional finite element model is corresponded in three-dimensional finite element model
Distribution and size, the correction factor of exciting current in two-dimensional finite element model is calculated, it is former to pass through correction factor compensation
Exciting current in two-dimensional finite element model, so as to which point of Magnetic Leakage Field of Transformer in accurate two-dimensional finite element model be calculated
Cloth and size.The technical scheme of the application can obtain in accurate two-dimensional finite element model the distribution of Magnetic Leakage Field of Transformer and big
It is small, while save calculating and storage resource.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme of the application, letter will be made to the required accompanying drawing used in embodiment below
Singly introduce, it should be apparent that, for those of ordinary skills, without having to pay creative labor,
Other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is a kind of flow signal of the two dimensional finite element emulation mode for Magnetic Leakage Field of Transformer that the embodiment of the present application provides
Figure；
Fig. 2 is the flow chart that a kind of three-dimensional finite element model that embodiment illustrated in fig. 1 provides emulates method for building up；
Fig. 3 is the schematic flow sheet of the computational methods for the first Magnetic Leakage Field of Transformer that embodiment illustrated in fig. 1 provides；
Fig. 4 is the schematic flow sheet of the computational methods for second of Magnetic Leakage Field of Transformer that embodiment illustrated in fig. 1 provides；
Fig. 5 is a kind of structural representation of the two dimensional finite element analogue system for Magnetic Leakage Field of Transformer that the embodiment of the present application provides
Figure；
Fig. 6 is the structural representation that a kind of three-dimensional finite element model that embodiment illustrated in fig. 5 provides establishes module；
Fig. 7 is a kind of structural representation for first stray field computing module that embodiment illustrated in fig. 5 provides；
Fig. 8 is a kind of structural representation for three leakages magnetic field computing module that embodiment illustrated in fig. 6 provides.
Embodiment
Referring to Fig. 1, a kind of stream of the two dimensional finite element emulation mode of the Magnetic Leakage Field of Transformer provided for the embodiment of the present application
Journey schematic diagram.As shown in figure 1, the two dimensional finite element emulation mode for the Magnetic Leakage Field of Transformer that the embodiment of the present application provides is including following
Step：
S110：Each internal structure of transformer is obtained, Magnetic Leakage Field of Transformer is established according to the emulation of each internal structure
Three-dimensional finite element model.The internal structure of transformer includes the structures such as iron core, winding, folder, arm-tie and fuel tank, corresponding emulation
The three-dimensional finite element model of the Magnetic Leakage Field of Transformer of foundation also includes the three-dimensional finite element of iron core, winding, folder, arm-tie and fuel tank
Model.Wherein, arm-tie, folder and the isostructural stray field of fuel tank are also very important, and simulation result is had a great influence, and
The accuracy of stray field simulation analysis plays an important role to the correction factor of two dimension in three-dimensional finite element model, therefore, arm-tie,
Folder and the isostructural emulation of fuel tank be can not ignore.
As shown in Fig. 2 the step S110 in Fig. 1：The three-dimensional of Magnetic Leakage Field of Transformer is established according to the emulation of each internal structure
FEM model, specifically include following steps：
S111：The structural parameters of each internal structure of transformer are set, and structural parameters include shape, size, material, number
Amount and annexation.Specifically, the quantity of such as transformer core and the number of turn of winding.
S112：The three-dimensional simulation model of each internal structure of transformer is established according to structural parameters.
S113：The three-dimensional simulation model of each internal structure is assembled according to the annexation of inside transformer structure, as
The three-dimensional finite element model of Magnetic Leakage Field of Transformer.
Specifically, using 3 d modeling software, transformer core, winding and folder etc. are established respectively using structural parameters
The three-dimensional simulation model of structure, each three-dimensional simulation model is combined into by an entirety by the equipment function of software and imports three-dimensional
In finite element analysis software.And the structural parameters such as material are assigned to all parts, so as to obtain the Three-D limited of whole transformer
Meta-model.By setting the sense of current to winding, size, umber of turn and each coil of exciting current are set by external circuit
Connected mode, so as to obtain the close value of magnetic in main air duct (the space air channel i.e. between winding), to analyze stray field size, and lead to
The Leakage flux distribution crossed in extraction Leakage flux distribution cloud atlas research three-dimensional finite element model.
By the structural parameters for each internal structure for setting transformer, according to the structural parameters establish transformer it is each in
The three-dimensional simulation model of portion's structure, imitated so as to assemble the three-dimensional of each internal structure according to the annexation of inside transformer structure
True mode, as the three-dimensional finite element model of Magnetic Leakage Field of Transformer, it is capable of the transformer device structure of accurate simulating realistic, emulates transformation
Each factor of Magnetic fluxleakage distribution and size is influenceed in device.
S120：Exciting current is applied to three-dimensional finite element model, stray transformer flux in three-dimensional finite element model is calculated
The distribution of field and size.
To be stated in the presence of exciting current, the transformer in three-dimensional finite element model can produce a certain size stray field,
The size of the stray field is related to the size of exciting current.
Step S120：Exciting current is applied to three-dimensional finite element model, transformation in three-dimensional finite element model is calculated
The distribution of device stray field and size, specifically include following steps：
S121：The umber of turn of default transformer and the connected mode of each coil.
S122：Apply the exciting current of predefined size to the winding of transformer according to predetermined current direction, simulation is swashed
Encourage the close value of main air duct magnetic and Leakage flux distribution cloud atlas of transformer corresponding to electric current.
S123：According to the close value of main air duct magnetic and Leakage flux distribution cloud atlas, distribution and the size of Magnetic Leakage Field of Transformer is calculated.
Specifically, size, the umber of turn of exciting current by setting the sense of current to winding, can be set by external circuit
And the connected mode of each coil, so as to obtain the close value of magnetic of corresponding main air duct (the space air channel i.e. between winding), to divide
Stray field size is analysed, and by extracting the Leakage flux distribution in Leakage flux distribution cloud atlas research three-dimensional finite element model.
By preset transformer umber of turn and each coil connected mode, according to predetermined current direction to transformer around
Group applies the exciting current of predefined size, and simulation obtains the close value of main air duct magnetic and Leakage flux distribution of transformer corresponding to exciting current
Cloud atlas.The size of Magnetic Leakage Field of Transformer can be accurately obtained by the close value of main air duct magnetic, can be accurate by Leakage flux distribution cloud atlas
Obtain the distribution situation of Magnetic Leakage Field of Transformer.
S130：The two-dimensional finite element model of Magnetic Leakage Field of Transformer is established according to the emulation of each internal structure of transformer.
S140：Exciting current is applied to two-dimensional finite element model, stray transformer flux in two-dimensional finite element model is calculated
The distribution of field and size.
The emulation for establishing the specific steps and three-dimensional finite element model of the two-dimensional finite element model of Magnetic Leakage Field of Transformer is established
Step is similar.Each internal structure specific and by transformer, such as iron core, the structural parameters of winding, uses two dimension
Finite Element Analysis Modeling software establishes two-dimensional finite element model according to the emulation of the structural parameters of each internal structure, and to two dimension
The distribution of Magnetic Leakage Field of Transformer and big is calculated in two-dimensional finite element model in FEM model during applying exciting current
It is small.
S150：According to three-dimensional finite element model and the position correspondence relation of two-dimensional finite element model, three-dimensional finite element is calculated
Distribution and the size of the Magnetic Leakage Field of Transformer of two-dimensional finite element model are corresponded in model.
The Magnetic Leakage Field of Transformer essence or three-dimensional finite element mould of two-dimensional finite element model are corresponded in three-dimensional finite element model
The distribution of the Magnetic Leakage Field of Transformer in a face and size in type, therefore distribution and the size of the Magnetic Leakage Field of Transformer being calculated
It is more accurate relative to two-dimensional finite element model.
As shown in figure 4, step S150 is specific as follows：
S151：Section is done according to position correspondence relation pair three-dimensional finite element model, obtained corresponding in three-dimensional finite element model
The transformer device structure of two-dimensional finite element model.
S152：Determine to correspond to Magnetic Leakage Field of Transformer in the transformer device structure of two-dimensional finite element model in three-dimensional finite element model
Distribution and size.
The two-dimensional finite element model of Magnetic Leakage Field of Transformer can cut what is obtained as three-dimensional finite element model from a section
Model, therefore cut by the position correspondence relation pair three-dimensional finite element model of two-dimensional finite element model and three-dimensional finite element model
Face, so as to obtain corresponding to the transformer device structure of two-dimensional finite element model in three-dimensional finite element model, and then it can accurately determine
The distribution of Magnetic Leakage Field of Transformer and size in the transformer device structure of corresponding two-dimensional finite element model.
S160：According to the distribution for the Magnetic Leakage Field of Transformer that two-dimensional finite element model is corresponded in three-dimensional finite element model and greatly
It is small, calculate the correction factor of exciting current in two-dimensional finite element model.
Distribution and the size of the Magnetic Leakage Field of Transformer of two-dimensional finite element model are corresponded in three-dimensional finite element model, is had with two dimension
It is not fully identical to limit the distribution of Magnetic Leakage Field of Transformer and size in meta-model, and three-dimensional finite element model corresponds to two dimensional finite element
The distribution of the Magnetic Leakage Field of Transformer of model and size are more accurate, thus by the distribution of the Magnetic Leakage Field of Transformer and size and its
Corresponding exciting current, can obtain two-dimensional finite element model obtain the stray transformer flux distribution and size required for corresponding to
Theoretical exciting current, and amendment is made to the actual exciting current in former two-dimensional finite element model according to the theoretical exciting current,
Obtain correction factor.
S170：Exciting current in two-dimensional finite element model is compensated according to correction factor, new two-dimensional finite is calculated
The distribution of Magnetic Leakage Field of Transformer and size in meta-model.
The two dimensional finite element emulation mode for the Magnetic Leakage Field of Transformer that the technical scheme of the application provides, according in transformer
Portion's structure establishes the three-dimensional finite element model of stray transformer flux, then applies exciting current, obtains in the three-dimensional finite element model
The distribution of Magnetic Leakage Field of Transformer and size；And Magnetic Leakage Field of Transformer in two-dimensional finite element model is calculated according to same method
Distribution and size；Exciting current is applied to the three-dimensional finite element model, transformation in the three-dimensional finite element model is calculated
The distribution of device stray field and size；Finally by the Magnetic Leakage Field of Transformer that two-dimensional finite element model is corresponded in three-dimensional finite element model
Distribution and size, the correction factor of exciting current in two-dimensional finite element model is calculated, it is former to pass through correction factor compensation
Exciting current in two-dimensional finite element model, so as to which point of Magnetic Leakage Field of Transformer in accurate two-dimensional finite element model be calculated
Cloth and size.The technical scheme of the application can obtain in accurate two-dimensional finite element model the distribution of Magnetic Leakage Field of Transformer and big
It is small, while save calculating and storage resource.
Based on same application design, present invention also offers the implementation of the two dimensional finite element analogue system of Magnetic Leakage Field of Transformer
Example, because method corresponding to system is the two dimensional finite element emulation mode of the Magnetic Leakage Field of Transformer in the embodiment of the present invention, and
The principle that the system solves problem is similar to method, therefore the implementation of system may refer to the implementation of method, repeats part no longer
Repeat.
Fig. 5 is referred to, Fig. 5 is a kind of two dimensional finite element analogue system for Magnetic Leakage Field of Transformer that the embodiment of the present application provides
Structural representation, as shown in figure 5, the two dimensional finite element analogue system of the Magnetic Leakage Field of Transformer, including：
Three-dimensional finite element model establishes module 101, for obtaining each internal structure of transformer, according to each internal junction
Structure emulates the three-dimensional finite element model for establishing Magnetic Leakage Field of Transformer.
First stray field computing module 102, for applying exciting current to three-dimensional finite element model, three-dimensional, which is calculated, to be had
Limit the distribution of Magnetic Leakage Field of Transformer and size in meta-model.
Two-dimensional finite element model establishes module 103, for establishing transformer according to the emulation of each internal structure of transformer
The two-dimensional finite element model of stray field.
Second stray field computing module 104, for applying exciting current to two-dimensional finite element model, two dimension, which is calculated, to be had
Limit the distribution of Magnetic Leakage Field of Transformer and size in meta-model.
Three leakages magnetic field computing module 105, for the position pair according to three-dimensional finite element model and two-dimensional finite element model
It should be related to, calculate distribution and the size of the Magnetic Leakage Field of Transformer that two-dimensional finite element model is corresponded in three-dimensional finite element model.
Correction factor computing module 106, for according to the transformation that two-dimensional finite element model is corresponded in three-dimensional finite element model
The distribution of device stray field and size, calculate the correction factor of exciting current in two-dimensional finite element model.
Distribution and the size of the Magnetic Leakage Field of Transformer of two-dimensional finite element model are corresponded in three-dimensional finite element model, is had with two dimension
It is not fully identical to limit the distribution of Magnetic Leakage Field of Transformer and size in meta-model, and three-dimensional finite element model corresponds to two dimensional finite element
The distribution of the Magnetic Leakage Field of Transformer of model and size are more accurate, thus by the distribution of the Magnetic Leakage Field of Transformer and size and its
Corresponding exciting current, can obtain two-dimensional finite element model obtain the stray transformer flux distribution and size required for corresponding to
Theoretical exciting current, and amendment is made to the actual exciting current in former two-dimensional finite element model according to the theoretical exciting current,
Obtain correction factor.
4th stray field computing module 107, for compensating the exciting current in two-dimensional finite element model according to correction factor,
The distribution of Magnetic Leakage Field of Transformer and size in new two-dimensional finite element model is calculated.
The two dimensional finite element analogue system for the Magnetic Leakage Field of Transformer that the technical scheme of the application provides, according in transformer
Portion's structure establishes the three-dimensional finite element model of stray transformer flux, then applies exciting current, obtains in the three-dimensional finite element model
The distribution of Magnetic Leakage Field of Transformer and size；And Magnetic Leakage Field of Transformer in two-dimensional finite element model is calculated according to same method
Distribution and size；Exciting current is applied to the three-dimensional finite element model, transformation in the three-dimensional finite element model is calculated
The distribution of device stray field and size；Finally by the Magnetic Leakage Field of Transformer that two-dimensional finite element model is corresponded in three-dimensional finite element model
Distribution and size, the correction factor of exciting current in two-dimensional finite element model is calculated, it is former to pass through correction factor compensation
Exciting current in two-dimensional finite element model, so as to which point of Magnetic Leakage Field of Transformer in accurate two-dimensional finite element model be calculated
Cloth and size.The technical scheme of the application can obtain in accurate two-dimensional finite element model the distribution of Magnetic Leakage Field of Transformer and big
It is small, while save calculating and storage resource.
As shown in fig. 6, in the present embodiment, the three-dimensional finite element model of embodiment illustrated in fig. 5 establishes module 101, including：
Structural parameters set submodule 1011, the structural parameters of each internal structure for setting transformer, structure ginseng
Number includes shape, size, material, quantity and annexation.
Three-dimensional artificial module setting up submodule 1012, for establishing the three of each internal structure of transformer according to structural parameters
Tie up simulation model.
Three-dimensional finite element model determination sub-module 1013, it is each for the annexation assembling according to inside transformer structure
The three-dimensional simulation model of internal structure, it is defined as the three-dimensional finite element model of Magnetic Leakage Field of Transformer.
As shown in fig. 7, in the present embodiment, the first stray field computing module 102 in embodiment illustrated in fig. 5, including：
Connected mode presets submodule 1021, for presetting the umber of turn of transformer and the connected mode of each coil.
Leakage field ASM 1022, for applying swashing for predefined size to the winding of transformer according to predetermined current direction
Electric current is encouraged, simulation obtains the close value of main air duct magnetic and Leakage flux distribution cloud atlas of transformer corresponding to exciting current.
Stray field calculating sub module 1023, for according to the close value of main air duct magnetic and Leakage flux distribution cloud atlas, transformation to be calculated
The distribution of device stray field and size.
In the embodiment of three leakages magnetic field computing module as shown in Figure 8, the three leakages magnetic field computing module 105 in Fig. 5,
Including：
Transformer device structure determination sub-module 1051, for doing section according to position correspondence relation pair three-dimensional finite element model,
It is determined that obtain corresponding to the transformer device structure of two-dimensional finite element model in three-dimensional finite element model.
Stray field determination sub-module 1052, for determining that transformer leaks in the correspondingly transformer device structure of two-dimensional finite element model
The distribution in magnetic field and size.
In the specific implementation, the present invention also provides a kind of computer-readable storage medium, wherein, the computer-readable storage medium can store
There is program, the program may include the part or all of step in each embodiment of method of calling provided by the invention when performing.'s
Storage medium can be magnetic disc, CD, read-only memory (English：Read-only memory, referred to as：ROM) or at random deposit
Store up memory body (English：Random access memory, referred to as：RAM) etc..
It is required that those skilled in the art can be understood that the technology in the embodiment of the present invention can add by software
The mode of general hardware platform realize.Based on such understanding, the technical scheme in the embodiment of the present invention substantially or
Say that the part to be contributed to prior art can be embodied in the form of software product, the computer software product can be deposited
Storage is in storage medium, such as ROM/RAM, magnetic disc, CD, including some instructions are causing a computer equipment (can be with
Be personal computer, server, either network equipment etc.) perform some parts of each embodiment of the present invention or embodiment
Method.
In this specification between each embodiment identical similar part mutually referring to.Implement especially for system
For example, because it is substantially similar to embodiment of the method, so description is fairly simple, related part is referring in embodiment of the method
Explanation.
Invention described above embodiment is not intended to limit the scope of the present invention..
Claims (8)
- A kind of 1. two dimensional finite element emulation mode of Magnetic Leakage Field of Transformer, it is characterised in that including：Each internal structure of transformer is obtained, is had according to the three-dimensional that Magnetic Leakage Field of Transformer is established in each internal structure emulation Limit meta-model；Exciting current is applied to the three-dimensional finite element model, Magnetic Leakage Field of Transformer in the three-dimensional finite element model is calculated Distribution and size；The two-dimensional finite element model of Magnetic Leakage Field of Transformer is established according to the emulation of each internal structure of the transformer；The exciting current is applied to the two-dimensional finite element model, transformer in the two-dimensional finite element model is calculated and leaks The distribution in magnetic field and size；According to the three-dimensional finite element model and the position correspondence relation of the two-dimensional finite element model, the Three-D limited is calculated Distribution and the size of the Magnetic Leakage Field of Transformer of two-dimensional finite element model are corresponded in meta-model；According to the distribution for the Magnetic Leakage Field of Transformer that two-dimensional finite element model is corresponded in the three-dimensional finite element model and size, calculate The correction factor of exciting current in the two-dimensional finite element model；Exciting current in the two-dimensional finite element model is compensated according to the correction factor, new two dimensional finite element is calculated The distribution of Magnetic Leakage Field of Transformer and size in model.
- 2. according to the method for claim 1, it is characterised in that described that transformer leakage is established according to the emulation of each internal structure The three-dimensional finite element model in magnetic field, including：Set transformer each internal structure structural parameters, the structural parameters include shape, size, material, quantity and Annexation；The three-dimensional simulation model of each internal structure of the transformer is established according to the structural parameters；The three-dimensional simulation model of each internal structure is assembled according to the annexation of the inside transformer structure, as institute State the three-dimensional finite element model of Magnetic Leakage Field of Transformer.
- 3. according to the method for claim 1, it is characterised in that described to apply exciting current, meter to three-dimensional finite element model Calculation obtains the distribution of Magnetic Leakage Field of Transformer and size in three-dimensional finite element model, including：Preset the umber of turn of the transformer and the connected mode of each coil；Apply the exciting current of predefined size to the winding of the transformer according to predetermined current direction, simulation obtains the excitation The close value of main air duct magnetic and Leakage flux distribution cloud atlas of transformer corresponding to electric current；According to the close value of the main air duct magnetic and Leakage flux distribution cloud atlas, distribution and the size of the Magnetic Leakage Field of Transformer is calculated.
- 4. according to the method for claim 1, it is characterised in that described according to three-dimensional finite element model and the two-dimensional finite The position correspondence relation of meta-model, calculates the Magnetic Leakage Field of Transformer that two-dimensional finite element model is corresponded in the three-dimensional finite element model Distribution and size, including：Section is done according to three-dimensional finite element model described in the position correspondence relation pair, it is right in the three-dimensional finite element model to obtain Answer the transformer device structure of two-dimensional finite element model；It is determined that the distribution of Magnetic Leakage Field of Transformer and size in the transformer device structure of corresponding two-dimensional finite element model.
- A kind of 5. two dimensional finite element analogue system of Magnetic Leakage Field of Transformer, it is characterised in that including：Three-dimensional finite element model establishes module, for obtaining each internal structure of transformer, according to each internal structure The three-dimensional finite element model of Magnetic Leakage Field of Transformer is established in emulation；First stray field computing module, for applying exciting current to the three-dimensional finite element model, the three-dimensional is calculated The distribution of Magnetic Leakage Field of Transformer and size in FEM model；Two-dimensional finite element model establishes module, for establishing stray transformer flux according to the emulation of each internal structure of the transformer The two-dimensional finite element model of field；Second stray field computing module, for applying the exciting current to the two-dimensional finite element model, it is calculated described The distribution of Magnetic Leakage Field of Transformer and size in two-dimensional finite element model；Three leakages magnetic field computing module, for the position pair according to the three-dimensional finite element model and the two-dimensional finite element model It should be related to, calculate distribution and the size of the Magnetic Leakage Field of Transformer that two-dimensional finite element model is corresponded in the three-dimensional finite element model；Correction factor computing module, for being leaked according to the transformer that two-dimensional finite element model is corresponded in the three-dimensional finite element model The distribution in magnetic field and size, calculate the correction factor of exciting current in the two-dimensional finite element model；4th stray field computing module, for compensating the excitation electricity in the two-dimensional finite element model according to the correction factor Stream, is calculated the distribution of Magnetic Leakage Field of Transformer and size in new two-dimensional finite element model.
- 6. system according to claim 5, it is characterised in that the three-dimensional finite element model establishes module, including：Structural parameters set submodule, the structural parameters of each internal structure for setting transformer, the structural parameters bag Include shape, size, material, quantity and annexation；Three-dimensional artificial module setting up submodule, for establishing the three of each internal structure of the transformer according to the structural parameters Tie up simulation model；Three-dimensional finite element model determination sub-module, it is described each for the annexation assembling according to the inside transformer structure The three-dimensional simulation model of internal structure, it is defined as the three-dimensional finite element model of the Magnetic Leakage Field of Transformer.
- 7. system according to claim 5, it is characterised in that the first stray field computing module, including：Connected mode presets submodule, for presetting the umber of turn of the transformer and the connected mode of each coil；Leakage field ASM, for applying the excitation electricity of predefined size to the winding of the transformer according to predetermined current direction Stream, simulation obtain the close value of main air duct magnetic and Leakage flux distribution cloud atlas of transformer corresponding to the exciting current；Stray field calculating sub module, for according to the close value of the main air duct magnetic and Leakage flux distribution cloud atlas, the transformation to be calculated The distribution of device stray field and size.
- 8. system according to claim 5, it is characterised in that the three leakages magnetic field computing module, including：Transformer device structure determination sub-module, section is done for the three-dimensional finite element model according to the position correspondence relation pair, It is determined that obtain corresponding to the transformer device structure of two-dimensional finite element model in the three-dimensional finite element model；Stray field determination sub-module, for determining point of Magnetic Leakage Field of Transformer in the correspondingly transformer device structure of two-dimensional finite element model Cloth and size.
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| CN108414900A (en) * | 2018-03-08 | 2018-08-17 | 云南电网有限责任公司电力科学研究院 | A kind of method and system of detection partial discharge of transformer |
| CN110162892A (en) * | 2019-05-24 | 2019-08-23 | 重庆大学 | A kind of large synchronous compensator stator end leakage inductance calculation method |
| CN112417727A (en) * | 2020-11-20 | 2021-02-26 | 三峡大学 | High-frequency transformer leakage inductance parameter calculation method considering end effect |
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| CN113919095A (en) * | 2021-10-11 | 2022-01-11 | 广东电网有限责任公司广州供电局 | Dry-type hollow bridge arm reactor magnetic field protection method and device and protection fence |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108414900A (en) * | 2018-03-08 | 2018-08-17 | 云南电网有限责任公司电力科学研究院 | A kind of method and system of detection partial discharge of transformer |
| CN110162892A (en) * | 2019-05-24 | 2019-08-23 | 重庆大学 | A kind of large synchronous compensator stator end leakage inductance calculation method |
| CN112906254A (en) * | 2019-11-19 | 2021-06-04 | 内蒙古电力(集团)有限责任公司内蒙古电力科学研究院分公司 | Transformer winding leakage magnetic field simulation modeling method |
| CN112417727A (en) * | 2020-11-20 | 2021-02-26 | 三峡大学 | High-frequency transformer leakage inductance parameter calculation method considering end effect |
| CN112417727B (en) * | 2020-11-20 | 2022-05-06 | 三峡大学 | High-frequency transformer leakage inductance parameter calculation method considering end effect |
| CN113392560A (en) * | 2021-06-24 | 2021-09-14 | 西安西电变压器有限责任公司 | Transformer inlet capacitance calculation method and device |
| CN113392560B (en) * | 2021-06-24 | 2023-09-05 | 西安西电变压器有限责任公司 | Transformer inlet capacitance calculation method and device |
| CN113919095A (en) * | 2021-10-11 | 2022-01-11 | 广东电网有限责任公司广州供电局 | Dry-type hollow bridge arm reactor magnetic field protection method and device and protection fence |
| CN113919095B (en) * | 2021-10-11 | 2023-08-29 | 广东电网有限责任公司广州供电局 | Magnetic field protection method and device for dry type hollow bridge arm reactor and protection fence |
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