CN106055812A - Three-dimensional transient electromagnetic field numerical simulation analysis method and device - Google Patents
Three-dimensional transient electromagnetic field numerical simulation analysis method and device Download PDFInfo
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Abstract
The invention discloses a three-dimensional transient electromagnetic field numerical simulation analysis method and device. The three-dimensional transient electromagnetic field numerical simulation analysis method comprises the steps of building a three-dimensional geometrical model of an oil-immersed power transformer based on structure parameters of a three-phase winding, an iron core and an oil tank of the oil-immersed power transformer; performing grid dissection for the three-dimensional geometrical model by adopting a finite element method so as to obtain a three-dimensional geometrical grid model of the oil-immersed power transformer; and calculating a transient electromagnetic force suffered by each phase of the winding of the oil-immersed power transformer based on sinusoidal current respectively applied to the three phase windings in the three-dimensional geometrical grid model. According to the three-dimensional transient electromagnetic field numerical simulation analysis method and device, the disadvantages of two-dimensional electromagnetic field analysis for an extra/ultra high voltage oil-immersed power transformer in the prior art are solved.
Description
Technical field
The present invention relates to transformator electromagnetic field analysis field, particularly relate to a kind of extra-high voltage oil-immersed power transformer short
Line state Three dimensional transient simulation of electromagnetic field analyzes method and device.
Background technology
The safety of power system device and reliability play pivotal role to the stable operation of power system, and oil immersed type
Power transformer is an important power equipment in operation of power networks, it in electrical network electric energy transmission distributivity, stability and
The economy run plays an important role.Along with scientific and technical development, the progress of production technology and New materials applied to electrical engineering
Exploitation application, the property indices of oil-immersed power transformer constantly refreshes, and single-machine capacity is increasing.And along with change
Being substantially improved of depressor electric pressure, as the safety and stability fortune of the oil-immersed power transformer of one of power system main carriers
OK, the overall ability to ward off risks of electrical network it is related to.
When power system is short-circuited, transient state short-circuit current may produce huge electromagnetic force, thus causes machinery knot
The vibration of structure.Under the effect of vibration, there is oil flow surge in the oil as cooling medium in the mailbox sealed.Therefore, at electricity
During Force system is short-circuited, electromagnetic force plays vital effect.
Currently for the calculating of electromagnetic force, technology is to use Numerical Analysis methods more accurately.But, due to
Computer software and the restriction of hardware, for extra-high voltage (more than 110KV) oil-immersed power transformer, due to its overall dimensions relatively
Greatly, model internal structure is complicated, is difficult to directly set up model and carries out policy, generally uses the method simplified to carry out two-dimensional electromagnetic field
Analyze.But, the calculated result in two-dimensional electromagnetic field, limited to the reference significance of design high-power transformer, and due to letter
Change and assume too many, it is difficult to providing quantitative analysis to extra-high voltage oil-immersed power transformer.
Summary of the invention
Being directed to the problems referred to above, the present invention provides a kind of Three dimensional transient simulation of electromagnetic field to analyze method and device, uses
To solve super extra-high voltage oil-immersed power transformer is carried out by prior art the deficiency of two-dimensional electromagnetic field analysis.
To achieve these goals, according to the first aspect of the invention, it is provided that a kind of Three dimensional transient electromagnetic field Numerical-Mode
Quasi-analytical method, the method includes:
The structural parameters of three-phase windings, iron core and fuel tank according to oil-immersed power transformer, build described oil immersed type electricity
The 3-D geometric model of power transformator；
Use FInite Element that described 3-D geometric model is carried out mesh generation, obtain described oil-immersed power transformer
Three-dimensional geometry grid model；
According to respectively to the sinusoidal current applied on three-phase windings in described three-dimensional geometry grid model, calculate described oil immersion
Transient Electromagnetic power suffered by each phase winding of formula power transformer.
Preferably, the method also includes:
It is picture by the individual event high pressure short circuit in winding transient current Waveform storage of described oil-immersed power transformer, uses
Described picture is read out by picture catching instrument, calculates in the 3-D geometric model obtaining the oil-immersed power transformer stated
The material properties of oil-immersed power transformer.
Preferably, the method also includes:
By the Transient Electromagnetic power suffered by described oil-immersed power transformer winding, calculate and obtain the change of described oil-immersed type power
Magnetic distribution situation in depressor three dimensions in the short-circuit state；
Wherein, described magnetic distribution situation includes that described oil-immersed power transformer is at an arbitrary position or free routing
Field strength distribution.
Preferably, the method also includes:
By the Transient Electromagnetic power suffered by described oil-immersed power transformer winding, calculate and obtain the change of described oil-immersed type power
Depressor Transient Electromagnetic waste；
According to described oil-immersed power transformer Transient Electromagnetic waste, described oil-immersed power transformer is simulated
Analysis of heat transmission, it is thus achieved that the thermal source reference value of described oil-immersed power transformer.
Preferably, described according to respectively on three-phase windings in described three-dimensional geometry grid model apply sinusoidal current,
Calculate the Transient Electromagnetic power suffered by each phase winding of described oil-immersed power transformer, including:
Respectively to applying sinusoidal current on three-phase windings in described three-dimensional grid geometric model, it is thus achieved that described oil-immersed type power
The short-circuit transient mode of transformator；
According to default boundary condition, use FInite Element that maxwell equation group is carried out mathematics discrete calculation, it is thus achieved that
The magnetic density of spatial points and magnetic field intensity in described three-dimensional grid geometric model；
According to described magnetic density and described magnetic field intensity, calculate and obtain each phase winding of described oil-immersed power transformer
Suffered Transient Electromagnetic power.
According to the second aspect of the invention, it is provided that a kind of Three dimensional transient simulation of electromagnetic field analytical equipment, this device
Including:
First MBM, for the structural parameters of three-phase windings, iron core and fuel tank according to oil-immersed power transformer,
Build the 3-D geometric model of described oil-immersed power transformer；
Second MBM, is used for using FInite Element that described 3-D geometric model is carried out mesh generation, obtains described
The three-dimensional geometry grid model of oil-immersed power transformer；
First computing module, for according to respectively to the sine applied on three-phase windings in described three-dimensional geometry grid model
Electric current, calculates the Transient Electromagnetic power suffered by each phase winding of described oil-immersed power transformer.
Preferably, this device also includes:
Second computing module, for by the individual event high pressure short circuit in winding transient current ripple of described oil-immersed power transformer
Shape is stored as picture, uses picture catching instrument to be read out described picture, calculates and obtain the oil-immersed power transformer stated
3-D geometric model in the material properties of oil-immersed power transformer.
Preferably, this device also includes:
3rd computing module, for by the Transient Electromagnetic power suffered by described oil-immersed power transformer winding, calculating obtains
Obtain the magnetic distribution situation in described oil-immersed power transformer three dimensions in the short-circuit state；
Wherein, described magnetic distribution situation includes that described oil-immersed power transformer is at an arbitrary position or free routing
Field strength distribution.
Preferably, this device also includes:
4th computing module, for by the Transient Electromagnetic power suffered by described oil-immersed power transformer winding, calculating obtains
Obtain described oil-immersed power transformer Transient Electromagnetic waste；
First analyzes module, for according to described oil-immersed power transformer Transient Electromagnetic waste, to described oil immersed type
Power transformer is simulated analysis of heat transmission, it is thus achieved that the thermal source reference value of described oil-immersed power transformer.
Preferably, described first computing module includes:
First acquiring unit, is used for respectively to applying sinusoidal current on three-phase windings in described three-dimensional grid geometric model,
Obtain the short-circuit transient mode of described oil-immersed power transformer；
First computing unit, for according to the boundary condition preset, uses FInite Element to carry out maxwell equation group
Mathematics discrete calculation, it is thus achieved that the magnetic density of spatial points and magnetic field intensity in described three-dimensional grid geometric model；
Second computing unit, for according to described magnetic density and described magnetic field intensity, calculates and obtains described oil immersed type
Transient Electromagnetic power suffered by each phase winding of power transformer.
Compared to prior art, the present invention constructs the 3-D geometric model of oil-immersed power transformer, and to described three
Dimension geometric model is analyzed and calculates, it is thus achieved that the Transient Electromagnetic power suffered by each phase winding of oil-immersed power transformer, solves
Super extra-high voltage oil-immersed power transformer is carried out the deficiency of two-dimensional electromagnetic field analysis by prior art.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Inventive embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to
The accompanying drawing provided obtains other accompanying drawing.
Fig. 1 analyzes the flow process signal of method for a kind of Three dimensional transient simulation of electromagnetic field that the embodiment of the present invention one provides
Figure；
Fig. 2 is the second order tetrahedral grid schematic diagram in the finite element theory of offer in the embodiment of the present invention one；
Fig. 3 is the concrete schematic flow sheet calculated in S13 step shown in Fig. 1 of the embodiment of the present invention one correspondence；
The structural representation of the Three dimensional transient Numerical Calculation of Electromagnetic Field device that Fig. 4 provides for the embodiment of the present invention three.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Describe, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments wholely.Based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under not making creative work premise
Embodiment, broadly falls into the scope of protection of the invention.
Term " first " in the specification and claims book of the present invention and above-mentioned accompanying drawing and " second " etc. are for district
Not different object rather than be used for describing specific order.In addition term " includes " and " having " and their any deformation,
It is intended to cover non-exclusive comprising.Such as contain series of steps or the process of unit, method, system, product or set
For not being set in the step or unit listed, but step or the unit do not listed can be included.
Embodiment one
See the flow process signal of a kind of Three dimensional transient Numerical Aanlysis Methods of Electromagnetic Field that Fig. 1 provides for the embodiment of the present invention one
Figure, the method includes step:
S11, the structural parameters of three-phase windings, iron core and fuel tank according to oil-immersed power transformer, build described oil immersion
After the 3-D geometric model of formula power transformer, perform S12；
S12, employing FInite Element carry out mesh generation to described 3-D geometric model, obtain described oil-immersed type power transformation
After the three-dimensional geometry grid model of device, perform S13；
S13, according to respectively to the sinusoidal current applied on three-phase windings in described three-dimensional geometry grid model, calculate described
Transient Electromagnetic power suffered by each phase winding of oil-immersed power transformer.
Wherein, in step s 11, the 3-D geometric model of oil-immersed power transformer have employed Maxwell software building,
Specially Maxwell carries primitive and enters the structural parameters of three-phase windings, iron core and the fuel tank of described oil-immersed power transformer
Row is analyzed, and sets up 3-D geometric model；During building 3-D geometric model, owing to whole Unified Model is by actuating coil
In being considered in, analyzing and simplified model, the assumed condition of simplification has:
During whole three-dimensional several model modeling, local detail is simplified；
The indefinite place of model structure parameter is by empirical modeling；
Core material permeance curve and loss characteristic curve are by providing picture information interpreting blueprints described point to obtain；
Transformator single-phase high pressure short circuit transient current by provide picture information interpreting blueprints described point encouraged；
In addition to short-circuit single-phase winding energization, remaining driving source is all considered sinusoidal variations in time；
Every equal levels winding does simplification summation when result is extracted process.
The assumed condition of above-mentioned simplification is the preferred assumed condition that the present invention enumerates listed by technology needs, but also
Do not represent the assumed condition of whole simplification.
In step s 12, use FInite Element that described 3-D geometric model is carried out mesh generation, particularly as follows:
Use Maxwell software, based on FInite Element, 3-D geometric model carries out mesh generation, model facetization grid amount
About 1,500,000, and the three-dimensional grid subdivision unit that Maxwell is used is tetrahedron the most stable in finite element theory
Two-order unit, sees the second order tetrahedral grid schematic diagram in the finite element theory provided in Fig. 2 embodiment of the present invention one, the most often
Individual grid except using its four summits in addition to node, the most also Mei Tiaoleng center is also served as its calculate node, each grid
Have ten nodes.Wherein, FInite Element is by whole domain discretization, is divided into many little regions, referred to as " single
Unit " or " finite element ".
In step s 13, according to respectively on three-phase windings in described three-dimensional geometry grid model apply sinusoidal current,
Calculate the Transient Electromagnetic power suffered by each phase winding of described oil-immersed power transformer, specifically include:
S31, respectively on three-phase windings in described three-dimensional grid geometric model apply sinusoidal current, it is thus achieved that described oil immersed type
The short-circuit transient mode of power transformer；
The boundary condition that S32, basis are preset, uses FInite Element that maxwell equation group is carried out mathematics discrete calculation,
Obtain magnetic density and the magnetic field intensity of spatial points in described three-dimensional grid geometric model；
S33, according to described magnetic density and described magnetic field intensity, calculate and obtain each phase of described oil-immersed power transformer
Transient Electromagnetic power suffered by winding.
Concrete, in step S31, in Three dimensional transient magnetic field, voltage source or current source can be called and swash as model
Encouraging source, in an embodiment of the present invention, the described high, medium and low current voltage of oil-immersed power transformer three-phase windings is 109.9/
599.8/2200A (transformator nameplate data parameters), wherein, plays pressure regulation effect during the work of middle pressure winding, and voltage regulation coil is not in work
Make state.Operating mode is single-phase height, middle pressure short circuit in winding, and during calculating, pressure short circuit in winding transient process high with A phase, middle carries out electromagnetism wink
State is analyzed.The design parameter that preferred each phase winding electric current applies in the embodiment of the present invention one arranges and see table 1.
Table 1 oil-immersed power transformer each phase winding electric current
Wherein, ikFor short circuit transient current.
In step s 32, calculated by Maxwell software, and in Maxwell calculates, be the default boundary of system
Condition, it is not necessary to user specifies.Maxwell software magnetic FEM computational analysis is utilized to meet following Maxwell equation:
B=μ H (1-3)
On the basis of formula (1-1) to formula (1-3), two identities can be constructed, such as formula (1-4) and formula (1-5) institute
Show:
Wherein, B is magnetic density, and H is magnetic field intensity；
In Maxwell, above-mentioned differential equation employing Finite Element Method is carried out mathematics discrete calculation, acquisition can be calculated
Magnetic density B of spatial points and the distribution of magnetic field intensity H in described three-dimensional grid geometric model.
Technical scheme disclosed in one according to embodiments of the present invention, by setting up three-dimensional to described oil-immersed power transformer
Geometric model, and model a few to described three-dimensional carry out mesh generation, obtains three-dimensional geometry grid model, and preferably by
Maxwell calculates the Transient Electromagnetic power obtained suffered by each phase winding of described oil-immersed power transformer.Solve in prior art
Super extra-high voltage oil-immersed power transformer is carried out the deficiency of two-dimensional electromagnetic field analysis.
Embodiment two
The detailed process of S11 to the S13 step described in the reference embodiment of the present invention one and Fig. 1, does not repeats,
Further, the embodiment of the present invention two may include steps of:
It is picture by the individual event high pressure short circuit in winding transient current Waveform storage of described oil-immersed power transformer, uses
Described picture is read out by picture catching instrument, calculates in the 3-D geometric model obtaining the oil-immersed power transformer stated
The material properties of oil-immersed power transformer；
Wherein, described picture catching instrument is the instrument that Maxwell software carries, and can directly read in electronic pictures
Curve.
Meanwhile, the embodiment of the present invention two may include steps of:
By the Transient Electromagnetic power suffered by described oil-immersed power transformer winding, calculate and obtain the change of described oil-immersed type power
Magnetic distribution situation in depressor three dimensions in the short-circuit state；
Wherein, described magnetic distribution situation includes that described oil-immersed power transformer is at an arbitrary position or free routing
Field strength distribution.
Meanwhile, the embodiment of the present invention two may include steps of:
By the Transient Electromagnetic power suffered by described oil-immersed power transformer winding, calculate and obtain the change of described oil-immersed type power
Depressor Transient Electromagnetic waste；
According to described oil-immersed power transformer Transient Electromagnetic waste, described oil-immersed power transformer is simulated
Analysis of heat transmission, it is thus achieved that the thermal source reference value of described oil-immersed power transformer.
Wherein, described calculating process all preferably Maxwell software completes, when obtaining described oil-immersed power transformer
Thermal source reference value, can be further by the analysis of heat transmission of software analogue transformer, it is to avoid described transformator rises too because of temperature
Lost efficacy greatly or occurred abnormal.
By the description of the detailed description of the invention in the embodiment of the present invention two, obtain described oil-immersed type power transformation calculating
After Transient Electromagnetic power suffered by device winding, the 3-D geometric model obtaining the oil-immersed power transformer stated can be calculated further
In the material properties of oil-immersed power transformer；Calculate and obtain described oil-immersed power transformer three-dimensional space in the short-circuit state
Magnetic distribution situation between；Obtain the thermal source reference value of described oil-immersed power transformer.Thus solve short-circuit condition
The reading manner of short circuit current and the extracting mode of material parameter；And by magnetic distribution situation, change can be directly acquainted with
Whether depressor field intensity in the short-circuit state meets design requirement, and then can change the design of transformator；By simulation is become
The heat radiation molecule of depressor, has safely provided guarantee for transformator.
Embodiment three
Corresponding with the Three dimensional transient Numerical Aanlysis Methods of Electromagnetic Field disclosed in the embodiment of the present invention one and embodiment two, this
Inventive embodiment three additionally provides a kind of Three dimensional transient Numerical Calculation of Electromagnetic Field device, and seeing Fig. 4 is the embodiment of the present invention three
The structural representation of the Three dimensional transient Numerical Calculation of Electromagnetic Field device provided, this device specifically includes:
First MBM 401, for the structure ginseng of three-phase windings, iron core and fuel tank according to oil-immersed power transformer
Number, builds the 3-D geometric model of described oil-immersed power transformer；
Second MBM 402, is used for using FInite Element that described 3-D geometric model is carried out mesh generation, obtains institute
State the three-dimensional geometry grid model of oil-immersed power transformer；
First computing module 403, for according to respectively to applying on three-phase windings in described three-dimensional geometry grid model
Sinusoidal current, calculates the Transient Electromagnetic power suffered by each phase winding of described oil-immersed power transformer.
Accordingly, this device also includes:
Second computing module 404, for by the individual event high pressure short circuit in winding transient state electricity of described oil-immersed power transformer
Stream Waveform storage is picture, uses picture catching instrument to be read out described picture, calculates and obtains the oil-immersed type power change stated
The material properties of the oil-immersed power transformer in the 3-D geometric model of depressor.
Accordingly, this device also includes:
3rd computing module 405, for by the Transient Electromagnetic power suffered by described oil-immersed power transformer winding, calculates
Obtain the magnetic distribution situation in described oil-immersed power transformer three dimensions in the short-circuit state；
Wherein, described magnetic distribution situation includes that described oil-immersed power transformer is at an arbitrary position or free routing
Field strength distribution.
Accordingly, this device also includes:
4th computing module 406, for by the Transient Electromagnetic power suffered by described oil-immersed power transformer winding, calculates
Obtain described oil-immersed power transformer Transient Electromagnetic waste；
First analyzes module 407, for according to described oil-immersed power transformer Transient Electromagnetic waste, to described oil immersion
Formula power transformer is simulated analysis of heat transmission, it is thus achieved that the thermal source reference value of described oil-immersed power transformer.
Concrete, described first computing module 403 includes:
First acquiring unit 4031, for respectively to applying sinusoidal electricity on three-phase windings in described three-dimensional grid geometric model
Stream, it is thus achieved that the short-circuit transient mode of described oil-immersed power transformer；
First computing unit 4032, for according to the boundary condition preset, uses FInite Element to maxwell equation group
Carry out mathematics discrete calculation, it is thus achieved that the magnetic density of spatial points and magnetic field intensity in described three-dimensional grid geometric model；
Second computing unit 4033, for according to described magnetic density and described magnetic field intensity, calculates and obtains described oil
Transient Electromagnetic power suffered by each phase winding of immersion power transformer.
In the embodiment of the present invention three, determine the three-dimensional geometry mould of described oil-filled transformer according to the first MBM
Type, determines the three-dimensional geometry grid model of described oil-immersed power transformer according to the second MBM, and according to the first meter
Calculate module and finally calculate the Transient Electromagnetic power obtained suffered by each phase winding of described oil-immersed power transformer.Thus solve existing
Super extra-high voltage oil-immersed power transformer is carried out the deficiency of two-dimensional electromagnetic field analysis by technology.
In an embodiment of the present invention, preferred hardware condition is four central processing units, and 128G internal memory, at development environment
In, described central processor CPU preferred Intel Xeon E5-4620, dominant frequency 2.2GHz, and use four CPU, each CPU
Having eight cores, internal memory 128GB, solid-state hard disk SSD is 256GB, selects two hard disks, and each hard disk 2TB, video card is preferred
NVIDIA Quadro K400；In running environment, described central processor CPU preferred Intel Xeon E5-4620, dominant frequency
2.2GHz, and use four CPU, each CPU to have eight cores, the minimum 32GB of internal memory, the minimum 100GB of hard-disk capacity,
Video card preferred NVIDIA Quadro.Preferably software environment is, operating system preferred Windows Server 2008 system and
Above version, described Modeling Calculation software preferred ANSYS Maxwell 3D V17.0, programming language uses C#.
Described above to the disclosed embodiments, makes professional and technical personnel in the field be capable of or uses the present invention.
Multiple amendment to these embodiments will be apparent from for those skilled in the art, as defined herein
General Principle can realize without departing from the spirit or scope of the present invention in other embodiments.Therefore, the present invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and principles disclosed herein and features of novelty phase one
The widest scope caused.
Claims (10)
1. a Three dimensional transient simulation of electromagnetic field analyzes method, it is characterised in that the method includes:
The structural parameters of three-phase windings, iron core and fuel tank according to oil-immersed power transformer, build described oil-immersed type power and become
The 3-D geometric model of depressor；
Use FInite Element that described 3-D geometric model is carried out mesh generation, obtain the three-dimensional of described oil-immersed power transformer
Geometric mesh model；
According to respectively to the sinusoidal current applied on three-phase windings in described three-dimensional geometry grid model, calculate described oil immersed type electricity
Transient Electromagnetic power suffered by each phase winding of power transformator.
Method the most according to claim 1, it is characterised in that the method also includes:
It is picture by the individual event high pressure short circuit in winding transient current Waveform storage of described oil-immersed power transformer, uses image
Described picture is read out by trap tool, calculates the oil immersion in the 3-D geometric model obtaining the oil-immersed power transformer stated
The material properties of formula power transformer.
Method the most according to claim 1, it is characterised in that the method also includes:
By the Transient Electromagnetic power suffered by described oil-immersed power transformer winding, calculate and obtain described oil-immersed power transformer
Magnetic distribution situation in three dimensions in the short-circuit state；
Wherein, described magnetic distribution situation includes that described oil-immersed power transformer is at an arbitrary position or the field intensity of free routing
Distribution.
Method the most according to claim 1, it is characterised in that the method also includes:
By the Transient Electromagnetic power suffered by described oil-immersed power transformer winding, calculate and obtain described oil-immersed power transformer
Transient Electromagnetic waste；
According to described oil-immersed power transformer Transient Electromagnetic waste, described oil-immersed power transformer is simulated heat radiation
Analyze, it is thus achieved that the thermal source reference value of described oil-immersed power transformer.
Method the most according to claim 1, it is characterised in that described according to respectively in described three-dimensional geometry grid model
The sinusoidal current applied on three-phase windings, calculates the Transient Electromagnetic power suffered by each phase winding of described oil-immersed power transformer, bag
Include:
Respectively to applying sinusoidal current on three-phase windings in described three-dimensional grid geometric model, it is thus achieved that described oil-immersed type power transformation
The short-circuit transient mode of device；
According to default boundary condition, use FInite Element that maxwell equation group is carried out mathematics discrete calculation, it is thus achieved that described
The magnetic density of spatial points and magnetic field intensity in three-dimensional grid geometric model；
According to described magnetic density and described magnetic field intensity, calculate and obtain suffered by each phase winding of described oil-immersed power transformer
Transient Electromagnetic power.
6. a Three dimensional transient simulation of electromagnetic field analytical equipment, it is characterised in that this device includes:
First MBM, for the structural parameters of three-phase windings, iron core and fuel tank according to oil-immersed power transformer, builds
The 3-D geometric model of described oil-immersed power transformer；
Second MBM, is used for using FInite Element that described 3-D geometric model is carried out mesh generation, obtains described oil immersion
The three-dimensional geometry grid model of formula power transformer；
First computing module, for according to respectively to the sinusoidal electricity applied on three-phase windings in described three-dimensional geometry grid model
Stream, calculates the Transient Electromagnetic power suffered by each phase winding of described oil-immersed power transformer.
Device the most according to claim 6, it is characterised in that this device also includes:
Second computing module, for depositing the individual event high pressure short circuit in winding transient current waveform of described oil-immersed power transformer
Storage is picture, uses picture catching instrument to be read out described picture, calculates and obtain the three of the oil-immersed power transformer stated
The material properties of the oil-immersed power transformer in dimension geometric model.
Device the most according to claim 6, it is characterised in that this device also includes:
3rd computing module, for by the Transient Electromagnetic power suffered by described oil-immersed power transformer winding, calculates and obtains institute
State the magnetic distribution situation in oil-immersed power transformer three dimensions in the short-circuit state；
Wherein, described magnetic distribution situation includes that described oil-immersed power transformer is at an arbitrary position or the field intensity of free routing
Distribution.
Device the most according to claim 6, it is characterised in that this device also includes:
4th computing module, for by the Transient Electromagnetic power suffered by described oil-immersed power transformer winding, calculates and obtains institute
State oil-immersed power transformer Transient Electromagnetic waste；
First analyzes module, for according to described oil-immersed power transformer Transient Electromagnetic waste, to described oil-immersed type power
Transformator is simulated analysis of heat transmission, it is thus achieved that the thermal source reference value of described oil-immersed power transformer.
Device the most according to claim 6, it is characterised in that described first computing module includes:
First acquiring unit, for respectively to applying sinusoidal current on three-phase windings in described three-dimensional grid geometric model, it is thus achieved that
The short-circuit transient mode of described oil-immersed power transformer；
First computing unit, for according to the boundary condition preset, uses FInite Element that maxwell equation group is carried out mathematics
Discrete calculation, it is thus achieved that the magnetic density of spatial points and magnetic field intensity in described three-dimensional grid geometric model；
Second computing unit, for according to described magnetic density and described magnetic field intensity, calculates and obtains described oil-immersed type power
Transient Electromagnetic power suffered by each phase winding of transformator.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106202834A (en) * | 2016-08-11 | 2016-12-07 | 广东电网有限责任公司电力科学研究院 | The computational methods of a kind of three-phase transformer oil stream motion and device |
| CN107194061A (en) * | 2017-05-19 | 2017-09-22 | 广东电网有限责任公司电力科学研究院 | 110kV oil-filled transformers structure, fluid multiple physical field method for numerical simulation and system |
| CN107194060A (en) * | 2017-05-19 | 2017-09-22 | 广东电网有限责任公司电力科学研究院 | 220kV oil-filled transformers structure, fluid multiple physical field method for numerical simulation and system |
| CN107301301A (en) * | 2017-07-06 | 2017-10-27 | 上海无线电设备研究所 | A kind of building method of magnetic loss type contracting than absorbing material |
| CN107423528A (en) * | 2017-08-29 | 2017-12-01 | 广东电网有限责任公司电力科学研究院 | A kind of Winding in Power Transformer short circuit transient state force analysis method and device |
| CN111753449A (en) * | 2020-06-16 | 2020-10-09 | 国网山东省电力公司威海供电公司 | Simulation method for acquiring hot spot temperatures of power transformer under different working conditions |
| CN117452081A (en) * | 2023-12-26 | 2024-01-26 | 国网天津市电力公司营销服务中心 | Electromagnetic interference calculation method and device, storage medium and electronic terminal |
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| CN106202834A (en) * | 2016-08-11 | 2016-12-07 | 广东电网有限责任公司电力科学研究院 | The computational methods of a kind of three-phase transformer oil stream motion and device |
| CN107194061A (en) * | 2017-05-19 | 2017-09-22 | 广东电网有限责任公司电力科学研究院 | 110kV oil-filled transformers structure, fluid multiple physical field method for numerical simulation and system |
| CN107194060A (en) * | 2017-05-19 | 2017-09-22 | 广东电网有限责任公司电力科学研究院 | 220kV oil-filled transformers structure, fluid multiple physical field method for numerical simulation and system |
| CN107301301A (en) * | 2017-07-06 | 2017-10-27 | 上海无线电设备研究所 | A kind of building method of magnetic loss type contracting than absorbing material |
| CN107301301B (en) * | 2017-07-06 | 2020-12-22 | 上海无线电设备研究所 | Construction method of magnetic loss type shrinkage ratio wave-absorbing material |
| CN107423528A (en) * | 2017-08-29 | 2017-12-01 | 广东电网有限责任公司电力科学研究院 | A kind of Winding in Power Transformer short circuit transient state force analysis method and device |
| CN111753449A (en) * | 2020-06-16 | 2020-10-09 | 国网山东省电力公司威海供电公司 | Simulation method for acquiring hot spot temperatures of power transformer under different working conditions |
| CN117452081A (en) * | 2023-12-26 | 2024-01-26 | 国网天津市电力公司营销服务中心 | Electromagnetic interference calculation method and device, storage medium and electronic terminal |
| CN117452081B (en) * | 2023-12-26 | 2024-04-30 | 国网天津市电力公司营销服务中心 | Electromagnetic interference calculation method and device, storage medium and electronic terminal |
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