CN110245437A - A kind of emulation mode, device, equipment and the medium of the insulation system of outgoing line device - Google Patents
A kind of emulation mode, device, equipment and the medium of the insulation system of outgoing line device Download PDFInfo
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Abstract
The invention discloses emulation mode, device, equipment and the computer readable storage mediums of a kind of insulation system of transformer outgoing line device, including presetting the physical environment of electric field and temperature field and the insulation system model of outgoing line device；Insulation system model is subjected to grid dividing using FInite Element, obtains several finite elements；Determine the temperature of electric field strength and each finite elements in temperature field of each finite elements in the electric field；Using the electric field strength and temperature of each finite elements, and combination conductivity theory formula determines the conductivity of each finite elements, so that the insulation performance to insulation system model is assessed.The influence of electric field strength and temperature for the conductivity of outgoing line device insulation system is considered simultaneously, obtained conductivity is closer to the true conductivity of insulation system, the reliability for the insulation system conductivity determined is improved, staff is preferable by the insulation performance for the insulation system that the conductivity designs.
Description
Technical field
The present invention relates to field transformers, more particularly to a kind of emulation mode of the insulation system of outgoing line device, this hair
Simulator, equipment and the computer readable storage medium of a kind of bright insulation system for further relating to outgoing line device.
Background technique
The outgoing line device of transformer includes balance pipe, voltage equalizing ball and the insulation for being coated on balance pipe and voltage equalizing ball surface
Structure, the quality of the insulation performance of the insulation system of outgoing line device directly affect the performance of outgoing line device, and conventional method is being counted
Using conductivity as the evaluation index of insulation performance when calculating insulation performance, but electric field strength is only only accounted for for conductivity
It influences, the conductivity for the insulation system determined is less reliable, so as to cause the insulation knot designed by the conductivity
The insulation performance of structure is poor.
Therefore, how to provide a kind of scheme of solution above-mentioned technical problem is that those skilled in the art need to solve at present
Problem.
Summary of the invention
The object of the present invention is to provide a kind of emulation mode of the insulation system of outgoing line device, the insulation determined is improved
The reliability of structure conductivity, the insulation performance of the insulation system that staff designs by the reliable conductivity compared with
It is good；It is a further object of the present invention to provide a kind of simulator of the insulation system of outgoing line device, equipment and computer-readable deposit
Storage media, improves the reliability for the insulation system conductivity determined, staff designs by the reliable conductivity
The insulation performance of the insulation system come is preferable.
In order to solve the above technical problems, the present invention provides a kind of emulation sides of the insulation system of transformer outgoing line device
Method, comprising:
Preset the physical environment of electric field and temperature field and the insulation system model of outgoing line device；
The insulation system model is subjected to grid dividing using FInite Element, obtains several finite elements；
Determine electric field strength and each finite elements of each finite elements in the electric field in institute
State the temperature in temperature field；
Using the electric field strength and temperature of each finite elements, and it is each to combine conductivity theory formula to determine
The conductivity of the finite elements, so that the insulation performance to the insulation system model is assessed.
Preferably, the electric field strength for determining each finite elements in the electric field specifically:
In conjunction with the material properties of each finite elements, electricity of each finite elements in the electric field is determined
Field intensity.
Preferably, the temperature for determining each finite elements in the temperature field specifically:
In conjunction with the joule heat that the leakage current in transformer generates, determine each finite elements in the temperature
Temperature in.
Preferably, which is applied to ANSYS emulation platform.
Preferably, the electric field strength and temperature using each finite elements, and combine conductivity theory public
After formula determines the conductivity of each finite elements, the emulation mode further include:
By the number of iterations plus one；
Judge whether the number of iterations reaches preset threshold；
If it is not, then return step: determining electric field strength of each finite elements in the electric field and each
Temperature of the finite elements in the temperature field；
The then electric field strength and temperature using each finite elements, and conductivity theory formula is combined to determine
The conductivity of each finite elements out specifically:
Using the electric field strength and temperature of each finite elements, and combine conductivity theory formula to last iteration
The conductivity for each finite elements determined is modified.
Preferably, the preset threshold is not more than 30.
In order to solve the above technical problems, the present invention also provides a kind of emulation of the insulation system of transformer outgoing line device dresses
It sets, comprising:
Presetting module, for presetting the physical environment of electric field and temperature field and the insulation system mould of outgoing line device
Type；
Division module, for the insulation system model to be carried out grid dividing using FInite Element, obtaining several has
Limit unit；
First determining module, for determining electric field strength of each finite elements in the electric field and each
Temperature of the finite elements in the temperature field；
Second determining module for the electric field strength and temperature using each finite elements, and combines conductivity
Theoretical formula determines the conductivity of each finite elements, so that the insulation performance to the insulation system model is commented
Estimate.
Preferably, the electric field strength for determining each finite elements in the electric field specifically:
In conjunction with the material properties of each finite elements, electricity of each finite elements in the electric field is determined
Field intensity.
In order to solve the above technical problems, the present invention also provides a kind of emulation of the insulation system of transformer outgoing line device to set
It is standby, comprising:
Memory, for storing computer program；
Processor realizes the insulation of the as above any one transformer outgoing line device when for executing the computer program
The step of emulation mode of structure.
In order to solve the above technical problems, the computer can the present invention also provides a kind of computer readable storage medium
It reads to be stored with computer program on storage medium, the as above any one change is realized when the computer program is executed by processor
The step of emulation mode of the insulation system of depressor outgoing line device.
The present invention provides a kind of emulation modes of the insulation system of transformer outgoing line device, including preset electric field with
And temperature field physical environment and outgoing line device insulation system model；Insulation system model is subjected to net using FInite Element
Lattice divide, and obtain several finite elements；Determine each finite elements electric field strength in the electric field and each limited list
Temperature of the member in temperature field；Using the electric field strength and temperature of each finite elements, and combine conductivity theory formula true
The conductivity of each finite elements is made, so that the insulation performance to insulation system model is assessed.
As it can be seen that electric field strength and temperature can be considered simultaneously for the conductance of outgoing line device insulation system in the application
The influence of rate, the conductivity obtained in such cases improve the insulation determined closer to the true conductivity of insulation system
The reliability of structure conductivity, the insulation performance of the insulation system that staff designs by the reliable conductivity compared with
It is good.
The present invention also provides a kind of simulators of the insulation system of transformer outgoing line device, equipment and computer-readable
Storage medium.
Detailed description of the invention
It to describe the technical solutions in the embodiments of the present invention more clearly, below will be to institute in the prior art and embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings.
Fig. 1 is a kind of flow diagram of the emulation mode of the insulation system of transformer outgoing line device provided by the invention；
Fig. 2 is a kind of structural schematic diagram of the simulator of the insulation system of transformer outgoing line device provided by the invention；
Fig. 3 is a kind of structural schematic diagram of the emulator of the insulation system of transformer outgoing line device provided by the invention.
Specific embodiment
Core of the invention is to provide a kind of emulation mode of the insulation system of outgoing line device, improves the insulation determined
The reliability of structure conductivity, the insulation performance of the insulation system that staff designs by the reliable conductivity compared with
It is good；Another core of the invention is to provide the simulator of the insulation system of outgoing line device a kind of, equipment and computer-readable deposits
Storage media, improves the reliability for the insulation system conductivity determined, staff designs by the reliable conductivity
The insulation performance of the insulation system come is preferable.
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
Every other embodiment obtained without making creative work, shall fall within the protection scope of the present invention.
Referring to FIG. 1, Fig. 1 is a kind of stream of the emulation mode of the insulation system of transformer outgoing line device provided by the invention
Journey schematic diagram, comprising:
Step S1: the physical environment of electric field and temperature field and the insulation system model of outgoing line device are preset；
Specifically, electric field and the physical environment in temperature field can simulate the insulation system of true transformer outgoing line device
Locating electric field and temperature field, can be the physical environment of a dynamic change.
Specifically, research object when insulation system model is emulation experiment, Simulating Test Study be one absolutely
The insulation performance of edge structural model carries out analysis assessment to the conductivity of the insulation system model.
Wherein, insulation system model targeted when each emulation experiment can be different, by comparing multiple insulation systems
The insulation performance assessment result of model can determine that insulation performance one of more preferably, to have devised with good insulation
The insulation system of performance.
Wherein, the insulation system of outgoing line device is the special cardboard of multilayer, and is in step-like arrangement.Insulation system can be specific
The voltage equalizing ball clad and multilayer speciality cardboard of the special cardboard composition of straight type barrier, multilayer including the special cardboard composition of multilayer
Between transformer oil clearance, the big oil clearance in power transformer enclosure effectively can be divided into small oil gap, can effectively prevented by outgoing line device
The only formation of impurity foot bridge, to improve the dielectric strength of oil clearance.
Specifically, the physical environment and insulation system model that set in step S1 can lay a solid foundation for subsequent step.
Step S2: insulation system model is subjected to grid dividing using FInite Element, obtains several finite elements；
Specifically, grid dividing is carried out to insulation system using FInite Element in the embodiment of the present invention, it is several to obtain
A finite elements can analyze insulation system with more refining, to make by carrying out research calculating to each finite elements
The insulation performance assessment result that the insulation system come must be finally determined is more accurate reliable.
Wherein, the particular number of finite elements can determine according to the size of grid dividing and the size of insulation system model
Fixed, the embodiment of the present invention is it is not limited here.
Step S3: determine each finite elements electric field strength in the electric field and each finite elements in temperature field
Temperature；
Specifically, by the resolving to the electric field and temperature field that define in above-mentioned steps, it can determine each have
The electric field strength of unit in the electric field and the temperature in temperature field are limited, by applicant's the study found that insulation system
Conductivity is not only influenced by electric field strength, is also affected by temperature, and both has non-linear relation with conductivity, this
In inventive embodiments can the influence by electric field strength and temperature for conductivity consider simultaneously, more comprehensively and synthetically examine
The influence factor for having considered insulation system conductivity is conducive to the accuracy for improving insulation performance assessment result.
Wherein, due to the scrambling and electric field of insulation system model and the uneven distribution in temperature field, may
Lead to the difference of the electric field strength of various pieces and temperature in insulation system model, therefore ties insulation in the embodiment of the present invention
Structure model partition is calculated for several finite elements and is more of practical significance.
Step S4: it is determined using the electric field strength and temperature of each finite elements, and in conjunction with conductivity theory formula
The conductivity of each finite elements, so that the insulation performance to insulation system model is assessed.
Specifically, in the embodiment of the present invention be directed to each finite elements, the electric field strength obtained in conjunction with step before and
Temperature, by conductivity theory formula calculate corresponding electric field strength and at a temperature of, the conductivity of the finite elements, true
After the conductivity for making each finite elements, the conductivity of each finite elements can be integrated, to predetermined insulation
The insulation performance of structural model is assessed.
The present invention provides a kind of emulation modes of the insulation system of transformer outgoing line device, including preset electric field with
And temperature field physical environment and outgoing line device insulation system model；Insulation system model is subjected to net using FInite Element
Lattice divide, and obtain several finite elements；Determine each finite elements electric field strength in the electric field and each limited list
Temperature of the member in temperature field；Using the electric field strength and temperature of each finite elements, and combine conductivity theory formula true
The conductivity of each finite elements is made, so that the insulation performance to insulation system model is assessed.
As it can be seen that electric field strength and temperature can be considered simultaneously for the conductance of outgoing line device insulation system in the application
The influence of rate, the conductivity obtained in such cases improve the insulation determined closer to the true conductivity of insulation system
The reliability of structure conductivity, the insulation performance of the insulation system that staff designs by the reliable conductivity compared with
It is good.
On the basis of the above embodiments:
Embodiment as one preferred determines the electric field strength of each finite elements in the electric field specifically:
In conjunction with the material properties of each finite elements, the electric field strength of each finite elements in the electric field is determined.
Specifically, in view of electric field strength may be subjected to the influence of the material properties of insulation system, therefore can combine
The material properties of each finite elements, to determine that the electric field strength of each finite elements in the electric field, such mode are determined
Each finite elements electric field strength due to consideration that the influences of material properties, therefore it is more accurate, facilitate deciding on electricity
Influence of the field intensity for insulation system conductivity.
Embodiment as one preferred determines temperature of each finite elements in temperature field specifically:
In conjunction with the joule heat that the leakage current in transformer generates, temperature of each finite elements in temperature field is determined
Degree.
Specifically, there may be leakage currents in insulation system, originally since transformer is under the action of DC Steady electric field
The joule heat as caused by leakage current can be introduced into the temperature computation of each finite elements in inventive embodiments, consideration
Factor is more comprehensive, therefore the temperature value of each finite elements obtained is more bonded reality.
Wherein it is determined that out after the more accurate temperature value of each finite elements it can be analyzed using accurately temperature value
Relationship between conductivity is conducive to determine the true conductivity of insulation system, so as to preferably to the exhausted of insulation system
Edge performance is assessed.
Wherein, transformer outgoing line device thermal self-restraint stress can be located near centre pilot, and under DC voltage effect,
High field intensity region is located in insulating board, and transformer oil clearance midfield is lower by force.
Embodiment as one preferred, the emulation mode are applied to ANSYS emulation platform.
Specifically, by ANSYS simulation software computing platform in the embodiment of the present invention, using its distinctive APDL (ANSYS
Parametric Design Language) Parametric Design Language worked out be suitable for big field domain/multimedium and topological structure
The steady-state field and temperature field iterative calculation method of complicated insulation system pass through APDL script language calling ANSYS software electric heating
The two-dimensional axial symmetric FEM calculation of field module kernel progress outgoing line device, high stability, accuracy are higher.
Certainly, other than ANSYS emulation platform, the emulation mode in the embodiment of the present invention can also be applied to other types
Emulation platform, the embodiment of the present invention is it is not limited here.
Embodiment as one preferred using the electric field strength and temperature of each finite elements, and combines conductivity
After theoretical formula determines the conductivity of each finite elements, the emulation mode further include:
By the number of iterations plus one；
Judge whether the number of iterations reaches preset threshold；
If it is not, then return step: determining each finite elements electric field strength in the electric field and each finite elements
Temperature in temperature field；
The electric field strength and temperature of each finite elements are then utilized, and determines each have in conjunction with conductivity theory formula
Limit the conductivity of unit specifically:
Using the electric field strength and temperature of each finite elements, and conductivity theory formula is combined to determine last iteration
The conductivity of each finite elements out is modified.
Specifically, in view of preset electric field and temperature field can be dynamic, and insulation system is when long
The electric field of interior dynamic change and the conductivity under temperature field may more be bonded reality, can be to electricity in the embodiment of the present invention
The non-linear relation of field intensity and temperature and conductivity carries out successive ignition, after obtaining conductivity every time, can will change
Generation number adds one, and until the number of iterations reaches preset threshold, iterated revision repeatedly otherwise can be carried out to conductivity, with
Just the electric field of dynamic change and the conductivity under temperature field in long-time are obtained.
Wherein, preset threshold can independently be set, and the embodiment of the present invention is it is not limited here.
Embodiment as one preferred, preset threshold are not more than 30.
Specifically, the preset threshold being empirically derived can be set to the numerical value no more than 30, in such cases can
It effectively calculates and is more bonded actual conductivity, and be unlikely to carry out excessive the number of iterations, to cause computing resource
Waste.
Specifically, preset threshold can be set to 25 etc., the embodiment of the present invention is it is not limited here.
Certainly, preset threshold may be set to be the numerical value greater than 30, and the embodiment of the present invention is it is not limited here.
Specifically, can be verified to the convergence of the emulation mode of the insulation system in the embodiment of the present invention, straight
Type barrier, voltage equalizing ball clad respectively choose 1 finite element unit in transformer oil clearance as observation object, and number is respectively
16435,12956,33372.It is evaluated and is referred to using the electric field strength, resistivity, temperature value of each unit as Algorithm Convergence respectively
Mark is verified, and wherein electric field strength, resistivity are carried out by the actual value of 30 iteration divided by the maximum value in 30 iteration
Normalized, temperature value are practical calculated value.The result shows that there is vibration in electric field strength in preceding 10 iterative process
Phenomenon is swung, is then tended towards stability.Monotone variation characteristic is presented with the number of iterations in preceding 5 step in resistivity, then tends towards stability.Temperature
Value is held essentially constant in 30 iteration, it was demonstrated that the variation of the dielectric joule heat as caused by insulating materials change in resistance
It is smaller.Calculated result show propose based on ANSYS/APDL language iterative calculation method better astringency.
Referring to FIG. 2, Fig. 2 is a kind of knot of the simulator of the insulation system of transformer outgoing line device provided by the invention
Structure schematic diagram, comprising:
Presetting module 1, for presetting the physical environment of electric field and temperature field and the insulation system of outgoing line device
Model；
Division module 2 obtains several limited lists for insulation system model to be carried out grid dividing using FInite Element
Member；
First determining module 3, for determining each finite elements electric field strength in the electric field and each limited list
Temperature of the member in temperature field；
Second determining module 4 for the electric field strength and temperature using each finite elements, and combines conductivity theory
Formula determines the conductivity of each finite elements, so that the insulation performance to insulation system model is assessed.
Embodiment as one preferred determines the electric field strength of each finite elements in the electric field specifically:
In conjunction with the material properties of each finite elements, the electric field strength of each finite elements in the electric field is determined.
The introduction of the simulator of the insulation system of transformer outgoing line device provided in an embodiment of the present invention is please referred to
The embodiment of the emulation mode of the insulation system of aforementioned transformer outgoing line device, details are not described herein for the embodiment of the present invention.
Referring to FIG. 3, Fig. 3 is a kind of knot of the emulator of the insulation system of transformer outgoing line device provided by the invention
Structure schematic diagram, comprising:
Memory 5, for storing computer program；
Processor 6 realizes the insulation system of transformer outgoing line device any one of as above when for executing computer program
The step of emulation mode.
The introduction of the emulator of the insulation system of transformer outgoing line device provided in an embodiment of the present invention is please referred to
The embodiment of the emulation mode of the insulation system of aforementioned transformer outgoing line device, details are not described herein for the embodiment of the present invention.
In order to solve the above technical problems, the present invention also provides a kind of computer readable storage medium, it is computer-readable to deposit
It is stored with computer program on storage media, as above any one transformer outgoing line device is realized when computer program is executed by processor
Insulation system emulation mode the step of.
The introduction of the computer readable storage medium of transformer outgoing line device provided in an embodiment of the present invention is please referred to
The embodiment of the emulation mode of the insulation system of aforementioned transformer outgoing line device, details are not described herein for the embodiment of the present invention.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
It should also be noted that, in the present specification, relational terms such as first and second and the like be used merely to by
One entity or operation are distinguished with another entity or operation, without necessarily requiring or implying these entities or operation
Between there are any actual relationship or orders.Moreover, the terms "include", "comprise" or its any other variant meaning
Covering non-exclusive inclusion, so that the process, method, article or equipment for including a series of elements not only includes that
A little elements, but also including other elements that are not explicitly listed, or further include for this process, method, article or
The intrinsic element of equipment.In the absence of more restrictions, the element limited by sentence "including a ...", is not arranged
Except there is also other identical elements in the process, method, article or equipment for including the element.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (10)
1. a kind of emulation mode of the insulation system of transformer outgoing line device characterized by comprising
Preset the physical environment of electric field and temperature field and the insulation system model of outgoing line device；
The insulation system model is subjected to grid dividing using FInite Element, obtains several finite elements；
Determine electric field strength and each finite elements of each finite elements in the electric field in the temperature
Spend the temperature in field；
Using the electric field strength and temperature of each finite elements, and in conjunction with conductivity theory formula determine it is each described in
The conductivity of finite elements, so that the insulation performance to the insulation system model is assessed.
2. the emulation mode of the insulation system of transformer outgoing line device according to claim 1, which is characterized in that described true
Make electric field strength of each finite elements in the electric field specifically:
In conjunction with the material properties of each finite elements, electric-field strength of each finite elements in the electric field is determined
Degree.
3. the emulation mode of the insulation system of transformer outgoing line device according to claim 2, which is characterized in that described true
Make temperature of each finite elements in the temperature field specifically:
In conjunction with the joule heat that the leakage current in transformer generates, determine each finite elements in the temperature field
Temperature.
4. the emulation mode of the insulation system of transformer outgoing line device according to claim 1, which is characterized in that the emulation
Method is applied to ANSYS emulation platform.
5. the emulation mode of the insulation system of transformer outgoing line device according to any one of claims 1 to 4, feature exist
In, the electric field strength and temperature using each finite elements, and it is each to combine conductivity theory formula to determine
After the conductivity of the finite elements, the emulation mode further include:
By the number of iterations plus one；
Judge whether the number of iterations reaches preset threshold；
If it is not, then return step: determining electric field strength of each finite elements in the electric field and each described
Temperature of the finite elements in the temperature field；
The then electric field strength and temperature using each finite elements, and determined respectively in conjunction with conductivity theory formula
The conductivity of a finite elements specifically:
Using the electric field strength and temperature of each finite elements, and conductivity theory formula is combined to determine last iteration
The conductivity of each finite elements out is modified.
6. the emulation mode of the insulation system of transformer outgoing line device according to claim 5, which is characterized in that described pre-
If threshold value is not more than 30.
7. a kind of simulator of the insulation system of transformer outgoing line device characterized by comprising
Presetting module, for presetting the physical environment of electric field and temperature field and the insulation system model of outgoing line device；
Division module obtains several limited lists for the insulation system model to be carried out grid dividing using FInite Element
Member；
First determining module, for determining electric field strength of each finite elements in the electric field and each described
Temperature of the finite elements in the temperature field；
Second determining module for the electric field strength and temperature using each finite elements, and combines conductivity theory
Formula determines the conductivity of each finite elements, so that the insulation performance to the insulation system model is assessed.
8. the simulator of the insulation system of transformer outgoing line device according to claim 7, which is characterized in that described true
Make electric field strength of each finite elements in the electric field specifically:
In conjunction with the material properties of each finite elements, electric-field strength of each finite elements in the electric field is determined
Degree.
9. a kind of emulator of the insulation system of transformer outgoing line device characterized by comprising
Memory, for storing computer program；
Processor realizes the transformer outgoing line device as described in any one of claim 1 to 6 when for executing the computer program
Insulation system emulation mode the step of.
10. a kind of computer readable storage medium, which is characterized in that be stored with computer on the computer readable storage medium
Program, realizing the transformer outgoing line device as described in any one of claim 1 to 6 when the computer program is executed by processor
The step of emulation mode of insulation system.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114779030A (en) * | 2022-06-17 | 2022-07-22 | 中国电力科学研究院有限公司 | Method and system for determining insulation strength of transformer wire outlet device |
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| 张施令等: "换流变压器出线装置非线性电场模拟及其绝缘结构优化", 《高电压技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114779030A (en) * | 2022-06-17 | 2022-07-22 | 中国电力科学研究院有限公司 | Method and system for determining insulation strength of transformer wire outlet device |
| CN114779030B (en) * | 2022-06-17 | 2022-09-02 | 中国电力科学研究院有限公司 | Method and system for determining insulation strength of transformer wire outlet device |
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