CN109408878A - Implementation method, device, equipment and the medium of field circuit method - Google Patents
Implementation method, device, equipment and the medium of field circuit method Download PDFInfo
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- CN109408878A CN109408878A CN201811081464.4A CN201811081464A CN109408878A CN 109408878 A CN109408878 A CN 109408878A CN 201811081464 A CN201811081464 A CN 201811081464A CN 109408878 A CN109408878 A CN 109408878A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- 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]
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F30/00—Computer-aided design [CAD]
- G06F30/30—Circuit design
- G06F30/36—Circuit design at the analogue level
- G06F30/367—Design verification, e.g. using simulation, simulation program with integrated circuit emphasis [SPICE], direct methods or relaxation methods
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/40—Arrangements for reducing harmonics
Abstract
The invention discloses the implementation methods of a field circuit method, the Arc Modelling of breaker in circuit model and the harmonic circuit including obtaining harmonic circuit；Wherein, the harmonic circuit is the circuit of input harmonics excitation；According to preset duration and step-length, the arc current in the component parameter and the component parameter of the circuit model of initial time is obtained；Wherein, the component parameter includes the voltage and electric current of component；According to the arc current and initial arc impedance, the arc voltage of the Arc Modelling in the step-length is obtained；The arc impedance is updated according to the arc voltage and the arc current；The arc current in the component parameter and the component parameter is updated according to the component parameter and the updated arc impedance based on the circuit model, until iteration reaches preset iterative steps, realizes field circuit method.
Description
Technical field
The present invention relates to field of power system more particularly to the implementation method of field circuit method, device, equipment and media.
Background technique
Current converter employed in D.C. high voltage transmission is a kind of typical non-linear electronic devices, it is transmitted in electric energy
During can be in the various harmonic waves of the alternating current-direct current side that the change of current becomes generation, including characteristic harmonics, uncharacteristic harmonics.Harmonic wave is to breaker
Type selecting and safe and stable operation have important influence, because system is there are harmonic wave, the electric current for causing breaker to cut-off is not sinusoidal
Waveform, di/dt influence between contact the medium recovery strength between the amplitude and change rate and contact of restoring voltage.If restoring electricity
Pressure amplitude value is raised, too big more than the medium recovery strength between contact, or recovery voltage change ratio, strong more than the insulation between contact
The resume speed after blow-out is spent, fracture can be resumed voltage breakdown, and electric arc can restrike, and lead to switching or failure of interruption, seriously
When will lead to the power outage of circuit breaker failure or power grid and occur.
Since the last century 90's, domestic and foreign scholars expand a large amount of research work for electric arc emulation.In recent years,
With popularizing for business software, on the basis of theoretical research, magnetohydrodynamics method, which has begun, is applied to SF6 breaker
It in the optimization of actual product spout structure, is emulated at present about electric arc, especially in the field road connection for realizing that circuit and electric arc are cut-off
It closes in coupling Simulation research, the AC or DC source applied is static power source, does not consider the system of entire transmission system
Influence of the parameter to electric arc input current, especially system are there are under harmonic wave, and harmonic wave influences whether system parameter, and then system is joined
Number influences electric arc input current, can have error in the road combined coupling Simulation research in field for causing electric arc and electric arc to cut-off.
Summary of the invention
In view of the above-mentioned problems, can join in view of system the purpose of the present invention is to provide the implementation method of a field circuit method
Number, accurately realizes field circuit method.
In a first aspect, the present invention provides the implementation methods of a field circuit method, comprising:
Obtain the Arc Modelling of breaker in the circuit model and the harmonic circuit of harmonic circuit；Wherein, the harmonic wave
Circuit is the circuit of input harmonics excitation；
According to preset duration and step-length, the component parameter and first device of the circuit model of initial time are obtained
Arc current in part parameter；Wherein, the component parameter includes the voltage and electric current of component；
According to the arc current and initial arc impedance, the arc voltage of the Arc Modelling in the step-length is obtained；
The arc impedance is updated according to the arc voltage and the arc current；
The member is updated according to the component parameter and the updated arc impedance based on the circuit model
Arc current in device parameters and the component parameter, until iteration reaches preset iterative steps.
It is described according to preset duration and step-length in the first possible implementation of first aspect, when obtaining initial
Arc current in the component parameter and the component parameter of the circuit model carved；Wherein, the component parameter
Voltage including component includes: with electric current
According to preset duration and step-length, the circuit mould for obtaining the different initial times in the preset duration is calculated
Component parameter in type；
Using the breaker initial arcing moment as initial time, component ginseng in the corresponding circuit model is obtained
Arc current in the several and component parameter.
The possible implementation of with reference to first aspect the first, in second of possible implementation of first aspect, institute
It states to be calculated according to preset duration and step-length and obtains in the preset duration first device in the circuit model of different initial times
Part parameter includes:
Obtain default impedance；
According to the preset duration, step-length and impedance, the institute for obtaining different initial times in the preset duration is calculated
State component parameter in circuit model.
In the third possible implementation of first aspect, the Arc Modelling is according to finite element analysis, to quality
What conservation equation, momentum conservation equation, energy equation and Maxwell equation simultaneous solution obtained.
In the 4th kind of possible implementation of first aspect, further includes: by the component parameter of the circuit model,
Arc current and the arc impedance in the component parameter are stored in preset file.
Second aspect, the present invention also provides the realization devices of a field circuit method, comprising:
Model obtains module, the electric arc mould of breaker in the circuit model and the harmonic circuit for obtaining harmonic circuit
Type；Wherein, the harmonic circuit is the circuit of input harmonics excitation；
Electric current obtains module, for obtaining the member of the circuit model of initial time according to preset duration and step-length
Arc current in device parameters and the component parameter；Wherein, the component parameter includes the voltage and electricity of component
Stream；
Arc voltage obtains module, for obtaining institute in the step-length according to the arc current and initial arc impedance
State the arc voltage of Arc Modelling；
Arc impedance obtains module, for updating the arc impedance according to the arc voltage and the arc current；
Update module is hindered for being based on the circuit model according to the component parameter and the updated electric arc
It is anti-, the arc current in the component parameter and the component parameter is updated, until iteration reaches preset iterative steps.
In the first possible implementation of second aspect, the electric current obtains module and includes:
Parameter calculation unit, for it is first to calculate the difference obtained in the preset duration according to preset duration and step-length
Component parameter in the circuit model at moment beginning；
Electric current acquiring unit, it is corresponding described for obtaining using the breaker initial arcing moment as initial time
Arc current in circuit model in component parameter and the component parameter.
In conjunction with the first possible implementation of second aspect, in second of possible implementation of second aspect, institute
Stating parameter calculation unit includes:
Obtain default impedance；
According to the preset duration, step-length and impedance, the institute for obtaining different initial times in the preset duration is calculated
State component parameter in circuit model.
The third aspect, the embodiment of the invention also provides the realization equipment of a field circuit method, including processor, memory with
And the computer program executed by the processor is stored in the memory and is configured as, described in the processor execution
The implementation method of the field circuit method as described in any of the above-described one is realized when computer program.
Fourth aspect, it is described computer-readable to deposit the embodiment of the invention also provides a kind of computer readable storage medium
Storage media includes the computer program of storage, wherein controls the computer-readable storage in computer program operation
Equipment where medium executes the implementation method of field circuit method described in above-mentioned any one.
One technical solution of above-mentioned technical proposal, which has the advantages that, obtains the circuit model of harmonic circuit and described humorous
The Arc Modelling of breaker in wave circuit；Wherein, the harmonic circuit is the circuit of input harmonics excitation；According to preset duration
With step-length, the arc current in the component parameter and the component parameter of the circuit model of initial time is obtained；Its
In, the component parameter includes the voltage and electric current of component；According to the arc current and initial arc impedance, institute is obtained
State the arc voltage of the Arc Modelling in step-length；The electric arc is updated according to the arc voltage and the arc current to hinder
It is anti-；The component ginseng is updated according to the component parameter and the updated arc impedance based on the circuit model
Arc current in the several and component parameter, until iteration reaches preset iterative steps.It considers under harmonic excitation
Influence to circuit parameter obtains the circuit model under harmonic excitation, by the calling and calculating between the parameter of two models,
Realize field circuit method.
Detailed description of the invention
Fig. 1 is the schematic diagram of the realization equipment for the field circuit method that the embodiment of the present invention one provides；
Fig. 2 is the flow diagram of the implementation method of a field circuit method provided by Embodiment 2 of the present invention；
Fig. 3 is the physical process schematic diagram in arc-plasma provided by Embodiment 2 of the present invention；
Fig. 4 is circuit topological structure schematic diagram provided by Embodiment 2 of the present invention；
Fig. 5 is the structural schematic diagram of the realization device for the field circuit method that third embodiment of the invention provides.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Those skilled in the art will appreciate that the present invention can be implemented as equipment, method or computer program product.
Therefore, the present disclosure may be embodied in the following forms, it may be assumed that can be complete hardware, be also possible to complete software (including
Firmware, resident software, microcode etc.), it can also be the form that hardware and software combines, referred to generally herein as " circuit ", " mould
Block " or " system ".In addition, in some embodiments, the present invention is also implemented as in one or more computer-readable mediums
In computer program product form, include computer-readable program code in the computer-readable medium.
It can be using any combination of one or more computer-readable media.Computer-readable medium can be calculating
Machine readable signal medium or computer readable storage medium.Computer readable storage medium for example can be --- but it is unlimited
In system, device or the device of --- electricity, magnetic, optical, electromagnetic, infrared ray or semiconductor, or any above combination.It calculates
The more specific example (non exhaustive list) of machine readable storage medium storing program for executing includes: electrical connection with one or more conducting wires, just
Taking formula computer disk, hard disk, random access memory (RAM), read-only memory (ROM), erasable type may be programmed read-only storage
Device (EPROM or flash memory), optical fiber, portable compact disc read-only memory (CD-ROM), light storage device, magnetic memory device,
Or above-mentioned any appropriate combination.In this document, computer readable storage medium can be it is any include or storage journey
The tangible medium of sequence, the program can be commanded execution system, device or device use or in connection.
Computer-readable signal media may include in a base band or as carrier wave a part propagate data-signal,
Wherein carry computer-readable program code.The data-signal of this propagation can take various forms, including --- but
It is not limited to --- electromagnetic signal, optical signal or above-mentioned any appropriate combination.Computer-readable signal media can also be
Any computer-readable medium other than computer readable storage medium, which can send, propagate or
Transmission is for by the use of instruction execution system, device or device or program in connection.
The program code for including on computer-readable medium can transmit with any suitable medium, including --- but it is unlimited
In --- wireless, electric wire, optical cable, RF etc. or above-mentioned any appropriate combination.
The computer for executing operation of the present invention can be write with one or more programming languages or combinations thereof
Program code, described program design language include object oriented program language-such as Java, Smalltalk, C++,
It further include conventional procedural programming language-such as " C " language or similar programming language.Program code can be with
It fully executes, partly execute on the user computer on the user computer, being executed as an independent software package, portion
Divide and partially executes or executed on a remote computer or server completely on the remote computer on the user computer.?
Be related in the situation of remote computer, remote computer can pass through the network of any kind --- including local area network (LAN) or
Wide area network (WAN)-be connected to subscriber computer, or, it may be connected to outer computer (such as mentioned using Internet service
It is connected for quotient by internet).
Below with reference to the method for the embodiment of the present invention, the flow chart of equipment (system) and computer program product and/or
The block diagram description present invention.It should be appreciated that each box in each box and flowchart and or block diagram of flowchart and or block diagram
Combination, can be realized by computer program instructions.These computer program instructions can be supplied to general purpose computer, dedicated
The processor of computer or other programmable data processing units, to produce a kind of virtual machine, these computer programs refer to
It enables and being executed by computer or other programmable data processing units, produced in the box in implementation flow chart and/or block diagram
The device of defined function/operation.
These computer program instructions can also be stored in can make computer or other programmable data processing units
In computer-readable medium operate in a specific manner, in this way, the instruction of storage in computer-readable medium just produces one
The manufacture of function/operation command device specified in a box including in implementation flow chart and/or block diagram
(manufacture)。
Computer program instructions can also be loaded into computer, other programmable data processing units or other equipment
On, so that series of operation steps are executed in computer, other programmable data processing units or other equipment, in terms of generating
The process that calculation machine is realized, so that the instruction executed on a computer or other programmable device is capable of providing implementation flow chart
And/or function/operation process specified in the box in block diagram.
Embodiment one
Referring to Figure 1, Fig. 1 is the schematic diagram of the realization equipment for the field circuit method that the embodiment of the present invention one provides, for holding
The implementation method of row field circuit method provided in an embodiment of the present invention, as shown in Figure 1, the realization equipment of the field circuit method include: to
A few processor 11, such as CPU, at least one network interface 14 or other users interface 13, memory 15, at least one
Communication bus 12, communication bus 12 is for realizing the connection communication between these components.Wherein, user interface 13 optionally can be with
Including USB interface and other standards interface, wireline interface.Network interface 14 optionally may include Wi-Fi interface and its
His wireless interface.Memory 15 may include high speed RAM memory, it is also possible to further include non-labile memory (non-
Volatilememory), a for example, at least magnetic disk storage.Memory 15 optionally may include at least one and be located remotely from
The storage device of aforementioned processor 11.
In some embodiments, memory 15 stores following element, executable modules or data structures, or
Their subset or their superset:
Operating system 151 includes various system programs, for realizing various basic businesses and hardware based of processing
Business；
Program 152.
Specifically, processor 11 executes field described in following embodiments for calling the program 152 stored in memory 15
The implementation method of road coupling.
Alleged processor can be central processing unit (Central Processing Unit, CPU), can also be it
His general processor, digital signal processor (Digital Signal Processor, DSP), specific integrated circuit
(Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components etc..General processor can be microprocessor or the processor is also possible to any conventional processor
Deng the processor is the control centre of the implementation method of the field circuit method, utilizes the entire institute of various interfaces and connection
State the various pieces of the implementation method of field circuit method.
The memory can be used for storing the computer program and/or module, and the processor is by operation or executes
Computer program in the memory and/or module are stored, and calls the data being stored in memory, realizes field road
The various functions of the electronic device of the realization of coupling.The memory can mainly include storing program area and storage data area,
In, storing program area can application program needed for storage program area, at least one function (such as sound-playing function, text
Conversion function etc.) etc.；Storage data area can store that (for example audio data, text disappear according to the created data that use of mobile phone
Cease data etc.) etc..In addition, memory may include high-speed random access memory, it can also include nonvolatile memory, example
Such as hard disk, memory, plug-in type hard disk, intelligent memory card (Smart Media Card, SMC), secure digital (Secure
Digital, SD) card, flash card (Flash Card), at least one disk memory, flush memory device or other volatibility are solid
State memory device.
Wherein, if the module that the realization of the field circuit method integrates is realized in the form of SFU software functional unit and as only
Vertical product when selling or using, can store in a computer readable storage medium.Based on this understanding, this hair
All or part of the process in bright realization above-described embodiment method, can also be instructed by computer program relevant hardware come
It completes, the computer program can be stored in a computer readable storage medium, and the computer program is by processor
When execution, it can be achieved that the step of above-mentioned each embodiment of the method.Wherein, the computer program includes computer program code,
The computer program code can be source code form, object identification code form, executable file or certain intermediate forms etc..Institute
State computer-readable medium may include: can carry the computer program code any entity or device, recording medium,
USB flash disk, mobile hard disk, magnetic disk, CD, computer storage, read-only memory (ROM, Read-Only Memory), arbitrary access
Memory (RAM, Random Access Memory), electric carrier signal, telecommunication signal and software distribution medium etc..It needs
It is bright, the content that the computer-readable medium includes can according in jurisdiction make laws and patent practice requirement into
Row increase and decrease appropriate, such as do not include electric load according to legislation and patent practice, computer-readable medium in certain jurisdictions
Wave signal and telecommunication signal.
Below with reference to accompanying drawings come describe the embodiment of the present invention field circuit method realization method.
Embodiment two
Fig. 2 is the flow diagram of the realization of a field circuit method provided by Embodiment 2 of the present invention.
The method of the realization of one field circuit method, comprising the following steps:
S11, the Arc Modelling for obtaining breaker in the circuit model and the harmonic circuit of harmonic circuit；Wherein, described
Harmonic circuit is the circuit of input harmonics excitation；
S12, according to preset duration and step-length, obtain the component parameter of the circuit model of initial time and described
Arc current in component parameter；Wherein, the component parameter includes the voltage and electric current of component；
S13, according to the arc current and initial arc impedance, obtain the electric arc electricity of the Arc Modelling in the step-length
Pressure；
S14, the arc impedance is updated according to the arc voltage and the arc current；
S15, it is based on the circuit model, according to the component parameter and the updated arc impedance, updates institute
The arc current in component parameter and the component parameter is stated, until iteration reaches preset iterative steps.
In embodiments of the present invention, Yao Shixian field circuit method needs first to establish Arc Modelling and circuit model.
In embodiments of the present invention, iteration is to repeat the activity of feedback procedure, and purpose is typically to approaching required mesh
Mark or result.The repetition of process is known as primary " iteration " each time, and the result that iteration obtains each time can be as next time
The initial value of iteration.A series of calculation steps are repeated, the process of subsequent amount is successively found out from the amount of front.This process
Each time as a result, being obtained by implementing identical calculation step to a preceding acquired results.In Arc Modelling and circuit mould
The parameter of type terminates after all updating completion for an iteration.
Preferably, the Arc Modelling is according to finite element analysis, to mass-conservation equation, momentum conservation equation, energy
What equation and Maxwell equation simultaneous solution obtained.
The foundation of Arc Modelling is explained in detail below:
In the contact opening procedure of breaker, the gas of high-temperature electric conduction will form between contact, i.e. our electricity for often saying
Arc plasma.There is temperature field, airflow field, electric and magnetic fields in arc-plasma, wherein temperature field, airflow field, electricity
It is intercoupled between field and the mathematical expression equation group in each of magnetic field by relevant parameter, coupled relation is as shown in Figure 3.
The temperature field of electric arc and intercoupling for airflow field are mainly realized by the influence to physical parameter and energy transport process.Electricity
The temperature field of arc and electric field mainly pass through Joule heat and conductivity intercouples.Lorentz force caused by electromagnetic field can be to electricity
Arc gas airflow field generation effect, and directly take part in as body force the calculating of the equation of momentum, it is thus achieved that electromagnetic field and
The coupling of airflow field.In addition, having to consider that contact moves in the calculating of electric arc to consider the different influences for cut-offfing speed
Dynamic bring zoning variation, to realize contact motion process and Arc temperature, airflow field, the coupling between electric and magnetic fields
It closes.
Inventor find in Fig. 3 shown in physical process can be described by magneto-hydrodynamic equations, and the magnetic current
It mainly include three hydromechanical fundamental equations and electromagnetic field equation in body dynamics equation.
Wherein, magneto-hydrodynamic equations include mass-conservation equation, momentum conservation equation and conservation of energy side as follows
Journey.
Mass-conservation equation:
Magneto-hydrodynamic equations equation form in the fluid of any kind is identical.ρ indicates gas density, u in formula (1)
Indicate the velocity vector of fluid.First item in formulaIt changes with time for quality, Section 2Draw for gas flowing
The mass change risen, quality keeps conservation under the two collective effect.
Momentum conservation equation:
P indicates that gas pressure, τ indicate that tensor, j indicate current density vectors in formula (2), and B is magnetic flux density.For dynamic
Measure conservation equation, formula (2) left sideWithThe time-varying process and convection process of momentum are respectively described, it is public
On the right side of formula (2)WithIt respectively describes fluid layer longitudinal direction pressure distribution bring momentum change and fluid viscous causes
Cross shear bring variation.It should be noted that in electric arc magnetic fluid, need to consider fluid in electromagnetic field by
Lorentz lorentz in, i.e. formula (2) last
Energy equation:
K indicates thermal conductivity in formula (3)；T is fluid temperature (F.T.)；E is energy, and energy contains the interior of fluid and can and move
Can, for the interior energy of fluid, wherein important group becomes enthalpy, and the calculating of enthalpy exists in electric arc compared to room temperature fluid
Very big difference.Because, there are a large amount of chemical reaction, the composition of gas has no longer been single SF6 gas in internal arctube,
But it is made of a large amount of atom, molecule and charged particle, therefore the calculating of enthalpy is by formula (5) table of above-mentioned energy equation
Show, main includes translation enthalpy (translational energy of every kind of particle at a certain temperature), internal enthalpy (the energy fraction of every kind of particle oneself
The energy that cloth is formed) and the enthalpy of formation (energy that every kind of particle is formed after chemically reacting).In formula (5), ZjTable
Show the partition function of particle j, which characterizes the distribution of the different energy levels of particle j, can obtain from document, and the present invention is herein not
It repeats, YjIndicate the mass fraction of particle j.
On the left of formula (3) equally by when variableAnd convective termIt constitutes.On the right side of formula (3)Indicate the heat transfer process of internal arctube,Indicate the frictional heat generation bring energy variation of fluid interlayer.Formula (3)
Last two of right side is respectively as follows: P specifically for electric arc fluidradFor the violent radiation dissipation of the photo-thermal effect bring of electric arc, σ
E2Joule heat input under the function of current.
The electromagnetic field equation, that is, the Maxwell equation, Maxwell equation:
In above-mentioned formula,For magnetic flux density vector/T,For current density vectors/Am-3,For electric field vector/
V·m-1,It is conductivity/sm for potential/V, σ-1, μ0For vacuum relative permeability, value 1, ArAnd AzIt is magnetic vector potential in diameter
To the component with axial direction.
In embodiments of the present invention, according to finite element analysis, the above-mentioned mass-conservation equation of simultaneous, momentum conservation equation, energy
Amount conservation equation and Maxwell equation can solve to obtain circuit breaker electric arc property, and then obtain Arc Modelling.
The foundation of circuit model is explained in detail below, is realized in ANSYS Multiphysics module using anysy command stream
Automatic foundation, solution and the data storage of circuit model, wherein the ANSYS Multiphysics module is imitative for multiple physical field
True module, illustratively, referring to fig. 4, V1, V2 are respectively power frequency and harmonic voltage source to the circuit model of foundation, and R5, R6 are respectively
The fracture resistance of double-fracture, C3 and C4 are fracture shunt capacitance, and R3 and R4 are the impedance of fracture arcing, and R2 is the resistance of breaker pillar
It is anti-, it is filter in red block.1e is arranged in R3 and R4 initial impedance value-5, i.e. on state utilizes the multiple physical field to emulate mould
Anysy order stream calculation in block solves the component parameter of the circuit model and flows through the arc current of breaker.
Preferably, described according to preset duration and step-length, obtain the component ginseng of the circuit model of initial time
Arc current in the several and component parameter；Wherein, the component parameter includes the voltage of component and electric current includes:
According to preset duration and step-length, the circuit mould for obtaining the different initial times in the preset duration is calculated
Component parameter in type；
Using the breaker initial arcing moment as initial time, component ginseng in the corresponding circuit model is obtained
Arc current in the several and component parameter.
Further, described according to preset duration and step-length, it calculates and obtains different initial times in the preset duration
The circuit model in component parameter include:
Obtain default impedance；
According to the preset duration, step-length and impedance, the institute for obtaining different initial times in the preset duration is calculated
State component parameter in circuit model.
Further, further includes: by the arc current in the component parameter of the circuit model, the component parameter
It is stored in preset file with the arc impedance.
It should be noted that the material calculation one of step-length and the Arc Modelling that the multiple physical field emulation module calculates
It causes, control time step is unanimously the mutual iterative calculation in order to realize Simulation of Arc Models and circuit-model simulation, reaches same
When the purpose that calculates.
Specifically, first obtaining circuit system locating for the Arc Modelling and the breaker of the breaker to be studied
Circuit model establishes the Arc Modelling in Fluent software, establishes circuit model in the multiple physical field emulation module,
It calls the anysy command stream in the multiple physical field emulation module that can realize that circuit model is established, gives the circuit model
One default impedance, input harmonics excitation under the circuit model is emulated, according to the preset duration, step-length with
The default impedance calculates and obtains in the preset duration component parameter in the circuit model of different initial times, adjusts
It can realize that circuit model solves with the anysy command stream in the multiple physical field emulation module, obtain with the breaker
The initial arcing moment is as the electric arc in component parameter Q0 and the component parameter in the circuit model of initial time
Electric current A0 inputs the arc current A0 in the initial arcing moment corresponding component parameter Q0 and the component parameter
To storing in preset file, for example, the component parameter Q0 and the arc current A0 be added separately to 1.txt and
In current_1.txt file, it can also be added in same file, in the calculating of subsequent circuit model, the ANSYS
After Multiphysics module completes the solution in a time step every time, it will automatically by the component parameter at this moment and
Arc current is updated in 1.txt and current_1.txt file.When arc process is cut-off in the Fluent software calculating, just
Beginningization arc impedance R0 reads corresponding arc current A0 of the initial arcing moment, that is, calls the current_1.txt text
The initial arc current value A0 is inputted the Arc Modelling of the breaker by the current value in part, simulates the breaker touching
Head opening procedure also can be used Dynamic mesh and simulate the contact of breaker opening procedure, meter to obtain arc voltage V0
It calculates the step-length and obtains the arc voltage V0 after convergence, the arc voltage V0 is corresponding with the initial arcing moment
The ratio calculation of arc current A0 obtains new arc impedance R1, updates the arc impedance R1 and stores to preset file
In, the arc impedance R1 can be updated storage into 1.txt file, in subsequent calculating, it will automatically by the electric arc
Impedance, which is updated, to be stored into the default file, starts the ANSYS Multiphysics module automatically by program,
Such as the ANSYS Multiphysics module, the ANSYS can be started by " 123.bat " in calling system
Multiphysics module call component parameter Q0 in the 1.txt and it is updated after arc impedance R1, according to described
The component parameter Q0 and updated arc impedance R1, the circuit model carry out simulation calculation, update the component
Arc current A0 in parameter Q0 and the component parameter obtains the electric arc in new component parameter Q1 and component parameter
Electric current A1 detects that current iteration does not reach preset iterative steps, and the Arc Modelling in the Fluent software is read
Updated arc current A1 in the current_1.txt file, and read updated arc impedance in the 1.txt
R1, and arc voltage calculating is carried out according to the arc impedance R1 after updating in the arc current A1 and previous step iteration, it obtains
To updated arc voltage V1, the arc impedance is updated according to the arc voltage V1 and the arc current A1 that are calculated
R1 obtains new arc impedance R2, the circuit model is based on, according to the component parameter Q1 and the updated electric arc
Impedance R2 updates the arc current A1 in the component parameter Q1 and the component parameter, obtains new component parameter
Arc current A2 in Q2 and component parameter realizes Fluent and ANSYS until iteration reaches preset iterative steps
The calculating that iterates of two modules of Multiphysics, and then realize field circuit method calculating.
Implement the present embodiment to have the following beneficial effects:
The Arc Modelling of breaker in the circuit model and the harmonic circuit of harmonic circuit is obtained first；Wherein, described
Harmonic circuit is the circuit of input harmonics excitation；According to preset duration and step-length, the circuit model of initial time is obtained
Component parameter and the component parameter in arc current；Wherein, the component parameter includes the voltage of component
With electric current；According to the arc current and initial arc impedance, the arc voltage of the Arc Modelling in the step-length is obtained；Root
The arc impedance is updated according to the arc voltage and the arc current；Based on the circuit model, according to the component
Parameter and the updated arc impedance, update the arc current in the component parameter and the component parameter, directly
Reach preset iterative steps to iteration.The influence to circuit parameter under harmonic excitation is considered, is obtained under harmonic excitation
Circuit model realizes field circuit method by the calling and calculating between the parameter of two models.
Embodiment three
Referring to the structural schematic diagram of the realization device of Fig. 5, third embodiment of the invention field circuit method provided；
The realization device of one field circuit method, comprising:
Model obtains module 31, the electric arc of breaker in the circuit model and the harmonic circuit for obtaining harmonic circuit
Model；Wherein, the harmonic circuit is the circuit of input harmonics excitation；
Electric current obtains module 32, for obtaining the circuit model of initial time according to preset duration and step-length
Arc current in component parameter and the component parameter；Wherein, the component parameter include component voltage with
Electric current；
Arc voltage obtains module 33, for obtaining in the step-length according to the arc current and initial arc impedance
The arc voltage of the Arc Modelling；
Arc impedance obtains module 34, hinders for updating the electric arc according to the arc voltage and the arc current
It is anti-；
Update module 35, for being based on the circuit model, according to the component parameter and the updated electric arc
Impedance updates the arc current in the component parameter and the component parameter, until iteration reaches preset iteration step
Number.
Preferably, the electric current acquisition module 32 includes:
Parameter calculation unit, for it is first to calculate the difference obtained in the preset duration according to preset duration and step-length
Component parameter in the circuit model at moment beginning；
Electric current acquiring unit, it is corresponding described for obtaining using the breaker initial arcing moment as initial time
Arc current in circuit model in component parameter and the component parameter.
Preferably, the parameter calculation unit includes:
Obtain default impedance；
According to the preset duration, step-length and impedance, the institute for obtaining different initial times in the preset duration is calculated
State component parameter in circuit model.
Preferably, the Arc Modelling is according to finite element analysis, to mass-conservation equation, momentum conservation equation, energy
What equation and Maxwell equation simultaneous solution obtained.
Preferably, further includes: by the component parameter of the circuit model, the component parameter arc current and
The arc impedance is stored in preset file.
Implement the present embodiment to have the following beneficial effects:
Obtain the Arc Modelling of breaker in the circuit model and the harmonic circuit of harmonic circuit；Wherein, the harmonic wave
Circuit is the circuit of input harmonics excitation；According to preset duration and step-length, the member of the circuit model of initial time is obtained
Arc current in device parameters and the component parameter；Wherein, the component parameter includes the voltage and electricity of component
Stream；According to the arc current and initial arc impedance, the arc voltage of the Arc Modelling in the step-length is obtained；According to institute
It states arc voltage and the arc current updates the arc impedance；Based on the circuit model, according to the component parameter
With the updated arc impedance, the arc current in the component parameter and the component parameter is updated, until repeatedly
In generation, reaches preset iterative steps.The influence to circuit parameter under harmonic excitation is considered, the circuit under harmonic excitation is obtained
Model realizes field circuit method by the calling and calculating between the parameter of two models.
It should be noted that the apparatus embodiments described above are merely exemplary, wherein described be used as separation unit
The unit of explanation may or may not be physically separated, and component shown as a unit can be or can also be with
It is not physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to actual
It needs that some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.In addition, device provided by the invention
In embodiment attached drawing, the connection relationship between module indicate between them have communication connection, specifically can be implemented as one or
A plurality of communication bus or signal wire.Those of ordinary skill in the art are without creative efforts, it can understand
And implement.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
It should be noted that in the above-described embodiments, all emphasizing particularly on different fields to the description of each embodiment, in some embodiment
In the part that is not described in, reference can be made to the related descriptions of other embodiments.Secondly, those skilled in the art should also know
It knows, the embodiments described in the specification are all preferred embodiments, and related movement and simulation must be that the present invention must
Must.
Claims (10)
1. a kind of implementation method of field circuit method characterized by comprising
Obtain the Arc Modelling of breaker in the circuit model and the harmonic circuit of harmonic circuit；Wherein, the harmonic circuit
For the circuit of input harmonics excitation；
According to preset duration and step-length, the component parameter and component ginseng of the circuit model of initial time are obtained
Arc current in number；Wherein, the component parameter includes the voltage and electric current of component；
According to the arc current and initial arc impedance, the arc voltage of the Arc Modelling in the step-length is obtained；
The arc impedance is updated according to the arc voltage and the arc current；
The component is updated according to the component parameter and the updated arc impedance based on the circuit model
Arc current in parameter and the component parameter, until iteration reaches preset iterative steps.
2. the implementation method of field circuit method according to claim 1, which is characterized in that described according to preset duration and step
It is long, obtain the arc current in the component parameter and the component parameter of the circuit model of initial time；Wherein, institute
State that component parameter includes the voltage of component and electric current includes:
According to preset duration and step-length, calculate in the circuit model for obtaining the different initial times in the preset duration
Component parameter；
Using the breaker initial arcing moment as initial time, obtain in the corresponding circuit model component parameter and
Arc current in the component parameter.
3. the implementation method of field circuit method according to claim 2, which is characterized in that described according to preset duration and step
Long, component parameter includes: in the circuit model of different initial times in the calculating acquisition preset duration
Obtain default impedance；
According to the preset duration, step-length and impedance, the electricity for obtaining different initial times in the preset duration is calculated
Component parameter in the model of road.
4. the implementation method of field circuit method according to claim 1, which is characterized in that the Arc Modelling is according to limited
Meta analysis obtains mass-conservation equation, momentum conservation equation, energy equation and Maxwell equation simultaneous solution.
5. the implementation method of field circuit method according to claim 1, which is characterized in that further include: by the circuit model
Component parameter, the arc current in the component parameter and the arc impedance be stored in preset file.
6. the realization device of a field circuit method characterized by comprising
Model obtains module, the Arc Modelling of breaker in the circuit model and the harmonic circuit for obtaining harmonic circuit；
Wherein, the harmonic circuit is the circuit of input harmonics excitation；
Electric current obtains module, for obtaining the component of the circuit model of initial time according to preset duration and step-length
Arc current in parameter and the component parameter；Wherein, the component parameter includes the voltage and electric current of component；
Arc voltage obtains module, for obtaining the electricity in the step-length according to the arc current and initial arc impedance
The arc voltage of arc model；
Arc impedance obtains module, for updating the arc impedance according to the arc voltage and the arc current；
Update module, for being based on the circuit model, according to the component parameter and the updated arc impedance, more
Arc current in the new component parameter and the component parameter, until iteration reaches preset iterative steps.
7. the realization device of field circuit method according to claim 6, which is characterized in that the electric current obtains module and includes:
Parameter calculation unit, for according to preset duration and step-length, calculate the difference obtained in the preset duration it is initial when
Component parameter in the circuit model carved；
Electric current acquiring unit, for obtaining the corresponding circuit using the breaker initial arcing moment as initial time
Arc current in model in component parameter and the component parameter.
8. the realization device of field circuit method according to claim 6, which is characterized in that the parameter calculation unit includes:
Obtain default impedance；
According to the preset duration, step-length and impedance, the electricity for obtaining different initial times in the preset duration is calculated
Component parameter in the model of road.
9. the realization equipment of a field circuit method, including processor, memory and storage in the memory and are configured as
The computer program executed by the processor, the processor realize such as claim 1 to 5 when executing the computer program
Any one of described in field circuit method implementation method.
10. a kind of computer readable storage medium, which is characterized in that the computer readable storage medium includes the calculating of storage
Machine program, wherein equipment where controlling the computer readable storage medium in computer program operation is executed as weighed
Benefit require any one of 1 to 5 described in field circuit method implementation method.
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