CN109270443A - A kind of fast transient overvoltage overall process efficient emulation system and emulation mode - Google Patents
A kind of fast transient overvoltage overall process efficient emulation system and emulation mode Download PDFInfo
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- CN109270443A CN109270443A CN201810974320.5A CN201810974320A CN109270443A CN 109270443 A CN109270443 A CN 109270443A CN 201810974320 A CN201810974320 A CN 201810974320A CN 109270443 A CN109270443 A CN 109270443A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
- G01R31/3271—Testing of circuit interrupters, switches or circuit-breakers of high voltage or medium voltage devices
- G01R31/3272—Apparatus, systems or circuits therefor
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Abstract
A kind of fast transient overvoltage overall process efficient emulation system and emulation mode, belong to Hyper-Voltage of Power Systems emulational computation field.It is characterized by comprising main control module and sequentially connected data input module, stable state computing module, breakdown judgment module, Transient calculation module breath arc judgment module, switching process module and data memory modules.Further include following steps: step a inputs primary data；Step b carries out stable state calculating；Step c judges whether to puncture；Step d carries out Transient calculation；Step e, judge high-frequency current whether zero passage；Step f, single combustive terminate, and calculate arcing number；Whether step g, switching process terminate；Step h terminates.In this fast transient overvoltage overall process efficient emulation system and emulation mode, by setting Transient calculation module and stable state computing module, simulation process is divided into stable state calculating and Transient calculation two parts, keeps simulation result more accurate.
Description
Technical field
A kind of fast transient overvoltage overall process efficient emulation system and emulation mode belong to Hyper-Voltage of Power Systems emulation
Computing technique field.
Background technique
Gas-insulated switchgear (Gas Insulated Switch-gear, GIS) is because it is with easy to maintain, structure
Compact, the advantages that occupied area is small, super-pressure in the power system, extra-high voltage system have obtained large-scale application.Become in GIS
In power station, fast transient overvoltage (Very Fast Transient Over-voltage, VFTO) mainly by breaker, every
It leaves pass and earthing switch operation generates, the main reason for wherein isolator operation is its generation, as shown in Figure 3.Quickly
Transient overvoltage is very big to gas-insulated switchgear and coupled electrical equipment threat, is that Recent study personnel are universal
The problem of research.
It is in the past primary electric in isolator operation to typically only considering when fast transient overvoltage simulation calculation
Arc burning generates the scene of fast transient overvoltage, and disconnecting switch entirely acts the fast transient overvoltage feelings generated in overall process
Condition can not be obtained by an arcing process to emulate, therefore propose a kind of side of fast transient overvoltage overall process efficient emulation
Method and system have important theory significance and practical value for the in-depth research of fast transient overvoltage characteristic.
Summary of the invention
The technical problem to be solved by the present invention is overcoming the deficiencies of the prior art and provide a kind of by setting Transient calculation
Simulation process is divided into stable state calculating and Transient calculation two parts, makes simulation result more by module and stable state computing module
Accurate fast transient overvoltage overall process efficient emulation system and emulation mode.
The technical solution adopted by the present invention to solve the technical problems is: the fast transient overvoltage overall process efficient emulation
System, it is characterised in that: including main control module and sequentially connected data input module, stable state computing module, breakdown judgement
Module, Transient calculation module breath arc judgment module and switching process module, wherein data input module, stable state computing module with
And the output end of Transient calculation module is connected with the input terminal of main control module, the output end of main control module calculates mould with stable state respectively
Block, breakdown judgment module, Transient calculation module cease arc judgment module and the input terminal of switching process module is connected, breakdown judgement
The output end of module is also connected with the input terminal of stable state computing module, cease arc judgment module output end also with Transient calculation module
Input terminal be connected；It is additionally provided with data memory module, the output end of numerical control module is connected with the input terminal of data memory module.
Preferably, be additionally provided with artificial intelligence modified module, the output end of artificial intelligence modified module respectively with it is described
Stable state computing module and Transient calculation module are connected, the input terminal phase of the output end and artificial intelligence modified module of main control module
Even.
Preferably, simulation result output module, the output end of the main control module and data memory module are additionally provided with
It is connected with the input terminal of simulation result output module.
Preferably, the stable state computing module calculates mould using the stable state in disconnecting switch action process when arc extinction
Type.
Preferably, the stable state computation model includes power supply, source side bus model, load-side bus model and π
Type lead model.
Preferably, the stable state computation model includes power supply, power supply side bus and load-side bus model and π type lead
Model.
Preferably, the Transient calculation module uses electrical-magnetic model.
Preferably, the electrical-magnetic model includes disconnecting switch model, transformer model, the GIS of uniform transmission line
Bus model, arrester model and inlet cannula model, wherein disconnecting switch model includes fracture direct-to-ground capacitance, capacitor between fracture
With arcing resistance.
A kind of emulation mode realized using fast transient overvoltage overall process efficient emulation system, it is characterised in that: packet
Include following steps:
Step a, input calculates the primary data needed when being calculated by data input module；
Step b carries out stable state calculating by main control module calls stable state computing module, and the steady state data being calculated is by stable state
Computing module is sent into main control module, then data memory module is written by main control module；
Step c judges whether contact gap punctures according to Criterion of breakdown by main control module calls breakdown judgment module, if touching
Head gap is breakdown, carries out step d, the return step b if not puncturing；
Step d carries out Transient calculation by main control module calls Transient calculation module, and the Temporal Data being calculated is by transient state
Computing module is sent into main control module, then data memory module is written by main control module；
Step e judges whether electric arc extinguishes according to arcing criterion by main control module calls breath arc judgment module, if electric arc
It has been extinguished that, execute step f, the return step d if not extinguishing；
Step f, after arc extinction, single combustive terminates, and judges arcing number by arcing judgment module；
Whether step g is terminated by the switching process that main control module calls switching process module detection and isolation switchs, if
Terminated, executes step h, if not yet terminated, return step b；
Step h, simulation process terminate and export to simulation result.
Preferably, when carrying out the step b, when carrying out the calculating of first time stable state, design conditions depend on data
The primary data of input module input, when carrying out the cycle calculations of steady state data, design conditions are by artificial intelligence modified module
It modifies to obtain according to the result that last stable state calculates；
When carrying out the step d, the design conditions of Transient calculation are by artificial intelligence modified module according to last temporary
The result that state calculates modifies to obtain.
Compared with prior art, the present invention has the beneficial effects that
In this fast transient overvoltage overall process efficient emulation system and emulation mode, by the way that Transient calculation module is arranged
With stable state computing module, simulation process is divided into stable state calculating and Transient calculation two parts, different simulation step lengths is respectively adopted,
And simulation model, design conditions different with when arc burning when arc extinction are fully taken into account, make simulation result more
It is accurate, different step-lengths are respectively adopted in two parts, solve because long using the time is calculated caused by small step-length in stable state calculating process,
Reduce EMS memory occupation simultaneously.
1, this fast transient overvoltage overall process efficient emulation system and emulation mode and a traditional arcing process produce
Raw single fast transient overvoltage waveform is compared, and fast transient overvoltage whole process simulation is able to reflect a preceding arc burning
Influence of the residual charge of generation to fast transient overvoltage waveform next time, while fast transient overvoltage can also be calculated and hit
Wear the statistical properties such as number.
2, by setting data memory module, all data of simulation process all be stored ins in data memory module, are convenient for pair
Data are called and analyze.
3, by establish different modules and the main control module by being realized by MATLAB program respectively to modules into
Row calls, and be automatically performed entire simulation process can, easy to operate, improves the efficiency of research work, reduces human error.
Detailed description of the invention
Fig. 1 is fast transient overvoltage overall process efficient emulation system structure diagram.
Fig. 2 is fast transient overvoltage overall process high efficiency simulating method flow chart.
Fig. 3 is that the movement of prior art disconnecting switch generates fast transient overvoltage schematic diagram.
Specific embodiment
Fig. 1~2 are highly preferred embodiment of the present invention, and 1~2 the present invention will be further described with reference to the accompanying drawing.
As shown in Figure 1, a kind of fast transient overvoltage overall process efficient emulation system (hereinafter referred to as analogue system), including
Main control module, stable state computing module, breakdown judgment module, Transient calculation module, breath arc judgment module, is opened data input module
Close procedure module, artificial intelligence modified module, data memory module and simulation result output module.Wherein data input mould
Block, stable state computing module, breakdown judgment module, Transient calculation module, breath arc judgment module, switching process module are sequentially connected.
In this analogue system, main control module is by MATLAB software realization.
Wherein the output end of main control module simultaneously with stable state computing module, breakdown judgment module, Transient calculation module, breath arc
Judgment module and the input terminal of switching process module are connected, to stable state computing module, breakdown judgment module, Transient calculation mould
Block, breath arc judgment module and switching process module are called, and wherein stable state computing module and Transient calculation module is defeated
Outlet is connected with the input terminal of main control module, and the data being calculated are sent into main control module.Puncture the output end of judgment module
It is connected simultaneously with the input terminal of stable state computing module, breath arc judgment module is connected with the input terminal of Transient calculation module simultaneously.
The output end of main control module is also modified with data memory module, simulation result output module and artificial intelligence respectively
The input terminal of module is connected, and the output end of data-storage module is connected with the input terminal of simulation result output module, artificial intelligence
The output end of modified module is also connected with the input terminal of stable state computing module and Transient calculation module respectively.
Data input module is used to input the parameter including each model in GIS, the voltage of power supply, and simulation step length etc. is various
Primary data.
Stable state computing module for calculating stable state calculating section in disconnecting switch action process, adopt when calculating by stable state
With the stable state computation model in disconnecting switch action process when arc extinction, material calculation is 1 μ s, using larger step size.Mainly
Voltage difference (i.e. recovery voltage) of the content of calculating between disconnecting switch both ends:
In formula, UmIndicate that source side voltage, w indicate the angular frequency of source side voltage,When indicating switch contact setting in motion
The phase of source side voltage, UL(t) the bus residual voltage of load side when a preceding arc extinction is indicated.
Stable state computation model includes power supply, power supply side bus and load-side bus model and π type lead model.
Transient calculation module is for calculating Transient calculation part in disconnecting switch action process, using electricity when calculating
Magnetic transient Model, for reflecting the arcing process for generating fast transient overvoltage, simulation model includes lumped parameter model and divides
Cloth parameter model, wherein material calculation is 1ns.The main contents that Transient calculation module calculates are the voltage at disconnecting switch both ends
Difference, the waveform and amplitude of the fast transient overvoltage that in GIS device and transformer inlet generates in arcing.Electro-magnetic transient mould
Type includes disconnecting switch model, transformer model, the GIS bus model of uniform transmission line, arrester model and inlet cannula mould
Type, and wherein disconnecting switch model includes fracture direct-to-ground capacitance, capacitor and arcing resistance between fracture, is reflected between isolation switch contact
Gap variation characteristic and electric arc variation characteristic.
Artificial intelligence modified module is used to calculate the stable state of next step according to the calculated result of previous step and Transient calculation
Design conditions modify, complete the transmitting of data.
Data memory module be used for stable state each time calculate as a result, the result of Transient calculation and the result of logic judgment
It is stored.
The data that simulation result output module is used to be stored according to data memory module are integrated and are analyzed to data, so
After export simulation result.
Whether breakdown judgment module is used to when carrying out arc through judgement, rise to arc through occurs judging
Arc criterion are as follows: the recovery voltage > breakdown voltage in arc gap, it may be assumed that Δ U > Uo, SF6 gas breakdown voltage are as follows:
Uo=88.5 δ d+0.38
In formula, δ is air relative density, and d is the distance of two interpolars, unit cm；
Whether breath arc judgment module is used for ceasing arc and judging, arcing extinguishes arc extinction criterion in judgement are as follows: high frequency
Whether electric current is zero.
The judgment basis of switching process module is disconnecting switch actuation time, and whether disconnecting switch movement is completed.
As shown in Fig. 2, fast transient overvoltage overall process high efficiency simulating method, includes the following steps:
Step 1001, start.
Step 1002, primary data is inputted；
The primary data needed when calculating is inputted when being calculated by data input module；
Primary data includes the parameter of each model in GIS, the voltage of power supply, simulation step length.
Step 1003, stable state calculating is carried out；
Stable state calculating is carried out by main control module calls stable state computing module, the steady state data being calculated calculates mould by stable state
Block is sent into main control module, then data memory module is written by main control module.
Carry out first time stable state calculate when, design conditions depend on data input module input primary data, into
When the cycle calculations of row steady state data, design conditions are carried out by artificial intelligence modified module according to the result that last stable state calculates
Modification obtains.
Step 1004, judge whether to puncture；
Judge whether contact gap punctures according to Criterion of breakdown by main control module calls breakdown judgment module, if contact gap
It is breakdown, step 1005 is carried out, return step 1003 if not puncturing.
Step 1005, Transient calculation is carried out；
Transient calculation is carried out by main control module calls Transient calculation module, the Temporal Data being calculated is by Transient calculation mould
Block is sent into main control module, then data memory module is written by main control module.
The design conditions of Transient calculation are modified by artificial intelligence modified module according to the result of last Transient calculation
It obtains.
Step 1006, judge high-frequency current whether zero passage；
Judge whether electric arc extinguishes according to arcing criterion by main control module calls breath arc judgment module, if electric arc has been put out
It goes out, executes step 1007, return step 1005 if not extinguishing.
Step 1007, single combustive terminates, and calculates arcing number；
After arc extinction, single combustive terminates, and judges arcing number by arcing judgment module.
Step 1008, whether switching process terminates；
Whether terminated by the switching process that main control module calls switching process module detection and isolation switchs, if tied
Beam executes step 1009, if not yet terminated, return step 1003.
Step 1009, terminate,
Simulation process terminates, and is exported by simulation result output module to simulation result.
The simulation result of output includes that the fast transient overvoltage that the whole process of disconnecting switch movement generates emulates wave
Shape, disconnecting switch movement during the entire process of fast transient overvoltage number of restriking, and every time restrike generation it is quick temporarily
Waveform, extreme value and the spectrogram of state overvoltage.
The above described is only a preferred embodiment of the present invention, being not that the invention has other forms of limitations, appoint
What those skilled in the art changed or be modified as possibly also with the technology contents of the disclosure above equivalent variations etc.
Imitate embodiment.But without departing from the technical solutions of the present invention, according to the technical essence of the invention to above embodiments institute
Any simple modification, equivalent variations and the remodeling made, still fall within the protection scope of technical solution of the present invention.
Claims (9)
1. a kind of fast transient overvoltage overall process efficient emulation system, it is characterised in that: including main control module and successively connect
Data input module, stable state computing module, breakdown judgment module, Transient calculation module, breath arc judgment module and the switch connect
Procedure module, wherein data input module, the output end of stable state computing module and Transient calculation module and main control module is defeated
Enter end to be connected, the output end of main control module judges with stable state computing module, breakdown judgment module, Transient calculation module breath arc respectively
The input terminal of module and switching process module is connected, and punctures input terminal of the output end of judgment module also with stable state computing module
It is connected, the output end of breath arc judgment module is also connected with the input terminal of Transient calculation module；It is additionally provided with data memory module, number
The output end of control module is connected with the input terminal of data memory module.
2. fast transient overvoltage overall process efficient emulation system according to claim 1, it is characterised in that: be additionally provided with
Artificial intelligence modified module, the output end of artificial intelligence modified module respectively with the stable state computing module and Transient calculation
Module is connected, and the output end of main control module is connected with the input terminal of artificial intelligence modified module.
3. fast transient overvoltage overall process efficient emulation system according to claim 1, it is characterised in that: be additionally provided with
The input of the output end and simulation result output module of simulation result output module, the main control module and data memory module
End is connected.
4. fast transient overvoltage overall process efficient emulation system according to claim 1, it is characterised in that: described is steady
State computing module is using the stable state computation model in disconnecting switch action process when arc extinction.
5. fast transient overvoltage overall process efficient emulation system according to claim 4, it is characterised in that: described is steady
State computation model includes power supply, source side bus model, load-side bus model and π type lead model.
6. fast transient overvoltage overall process efficient emulation system according to claim 1, it is characterised in that: described is temporary
State computing module uses electrical-magnetic model.
7. fast transient overvoltage overall process efficient emulation system according to claim 6, it is characterised in that: the electricity
Magnetic transient Model includes disconnecting switch model, transformer model, the GIS bus model of uniform transmission line, arrester model and is entered
Muzzle tube model, wherein disconnecting switch model includes fracture direct-to-ground capacitance, capacitor and arcing resistance between fracture.
8. the emulation realized using the described in any item fast transient overvoltage overall process efficient emulation systems of claim 1~7
Method, characterized by the following steps:
Step a, input calculates the primary data needed when being calculated by data input module；
Step b carries out stable state calculating by main control module calls stable state computing module, and the steady state data being calculated is calculated by stable state
Module is sent into main control module, then data memory module is written by main control module；
Step c judges whether contact gap punctures according to Criterion of breakdown by main control module calls breakdown judgment module, if between contact
Gap is breakdown, carries out step d, the return step b if not puncturing；
Step d carries out Transient calculation by main control module calls Transient calculation module, and the Temporal Data being calculated is by Transient calculation
Module is sent into main control module, then data memory module is written by main control module；
Step e judges whether electric arc extinguishes according to arcing criterion by main control module calls breath arc judgment module, if electric arc is
Extinguish, executes step f, the return step d if not extinguishing；
Step f, after arc extinction, single combustive terminates, and judges arcing number by arcing judgment module；
Whether step g is terminated by the switching process that main control module calls switching process module detection and isolation switchs, if tied
Beam executes step h, if not yet terminated, return step b；
Step h, simulation process terminate and export to simulation result.
9. fast transient overvoltage overall process high efficiency simulating method according to claim 8, it is characterised in that: carrying out institute
When the step b stated, when carrying out the calculating of first time stable state, design conditions depend on the primary data of data input module input,
When carrying out the cycle calculations of steady state data, result that design conditions are calculated by artificial intelligence modified module according to last stable state
It modifies to obtain；
When carrying out the step d, the design conditions of Transient calculation are by artificial intelligence modified module according to last transient state meter
The result of calculation modifies to obtain.
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