CN107291981A - The emulation mode and device of transmission line of electricity - Google Patents
The emulation mode and device of transmission line of electricity Download PDFInfo
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- CN107291981A CN107291981A CN201710347972.1A CN201710347972A CN107291981A CN 107291981 A CN107291981 A CN 107291981A CN 201710347972 A CN201710347972 A CN 201710347972A CN 107291981 A CN107291981 A CN 107291981A
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
- G06Q50/00—Systems or methods specially adapted for specific business sectors, e.g. utilities or tourism
- G06Q50/06—Electricity, gas or water supply
Abstract
The invention discloses a kind of emulation mode of transmission line of electricity and device.Wherein, this method includes：Determine the type loaded in transmission line of electricity；Type according to load determines the circuit model of the discrete time-domain of transmission line of electricity；Determine the current-voltage correlation formula of circuit model；Current-voltage correlation formula is emulated by simulation algorithm, the simulation result of transmission line of electricity is obtained.The present invention solve transmission line of electricity in correlation technique simulation result can not accurately reflect transmission line of electricity actual result technical problem.
Description
Technical field
The present invention relates to emulation field, in particular to the emulation mode and device of a kind of transmission line of electricity.
Background technology
As society is to the growth of energy demand and the progress of generation technology, electric power networks topological system becomes more and more multiple
Miscellaneous, operation difficulty is also increasing.Power system constantly expands, and high pressure remote distance power system also gradually increases, and high-tension electricity
Force system has a very wide distribution, and that passes through is regional with a varied topography, if it is possible to quickly and accurately system is emulated, just can be from
Safe operation of the technological layer to power network provides reliable support, with huge social and economic benefit.Therefore power system
Analysis and emulation technology become the indispensable instrument of process and the hands such as Power System Planning, design, operation, analysis and transformation
Section.
There are a variety of simulation softwares in the prior art for solving power system, for example, any contain can be emulated
There is the ATP emulation of the circuit of the original papers such as (three-phase) power supply, resistance, electric capacity, inductance, switch, transformer, long-distance transmission line composition soft
Part.Because all Development of Simulation Software are all in discrete time-domain, with discrete interval, (time step Δ t) is emulated, no
Transient process can continuously be emulated.Therefore the truncated error produced can build up effect, cause final simulation result to deviate
How actual value, determine the simulation model of transmission line of electricity so that the simulation result of power system more accurately turns into the skill for needing to solve
Art problem.
For transmission line of electricity in correlation technique simulation result can not accurately reflect transmission line of electricity actual result technology
Problem, not yet proposes effective solution at present.
The content of the invention
It is defeated in correlation technique at least to solve the embodiments of the invention provide a kind of emulation mode of transmission line of electricity and device
The simulation result of electric line can not accurately reflect the technical problem of the actual result of transmission line of electricity.
One side according to embodiments of the present invention includes there is provided a kind of emulation mode of transmission line of electricity, this method：Really
Determine the type loaded in transmission line of electricity；Type according to load determines the circuit model of the discrete time-domain of transmission line of electricity；It is determined that electric
The current-voltage correlation formula of road model；Current-voltage correlation formula is emulated by simulation algorithm, the imitative of transmission line of electricity is obtained
True result.
Further, it is determined that the current-voltage correlation formula of circuit model includes：Load to each node in circuit model is entered
Row analysis obtains modal equation；The electricity of circuit model is determined based on the recurrence relation of each current source in circuit model and modal equation
Flow voltage relationship.
Further, current-voltage correlation formula is emulated by simulation algorithm, obtains the simulation result of transmission line of electricity
Including：Transient emulation condition is determined, wherein, transient emulation condition includes time step；Current Voltage is closed by simulation algorithm
It is that formula is emulated under default simulated conditions, obtains the transient current waveform of each node and/or transient state electricity in circuit model
Corrugating.
Further, current-voltage correlation formula is emulated by simulation algorithm, obtains the simulation result of transmission line of electricity
Including：Current-voltage correlation formula is emulated by different simulation algorithms, the emulation knot obtained to different simulation algorithms
Fruit is contrasted；The degree of accuracy of circuit model is determined according to comparing result.
Another aspect according to embodiments of the present invention, additionally provides a kind of simulator of transmission line of electricity, and the device includes：
First determining unit, for determining the type loaded in transmission line of electricity；Second determining unit, is determined for the type according to load
The circuit model of the discrete time-domain of transmission line of electricity；3rd determining unit, the current-voltage correlation formula for determining circuit model；It is imitative
True unit, for being emulated by simulation algorithm to current-voltage correlation formula, obtains the simulation result of transmission line of electricity.
Further, the first determining unit includes：Analysis module, is divided for the load to each node in circuit model
Analysis obtains modal equation；First determining module, for true based on the recurrence relation of each current source in circuit model and modal equation
Determine the current-voltage correlation formula of circuit model.
Further, simulation unit includes：Second determining module, for determining transient emulation condition, wherein, transient emulation
Condition includes time step；Emulation module, for being entered by simulation algorithm to current-voltage correlation formula under default simulated conditions
Row emulation, obtains the transient current waveform and/or transient voltage waveform of each node in circuit model.
Further, simulation unit includes：Contrast module, for by different simulation algorithms to current-voltage correlation formula
Emulated, the simulation result that different simulation algorithms is obtained is contrasted；3rd determining module, for according to comparing result
Determine circuit model the degree of accuracy,
Other side according to embodiments of the present invention, additionally provides a kind of storage medium, and the storage medium includes storage
Program, wherein, when program is run control storage medium where equipment perform the present invention transmission line of electricity emulation mode.
Other side according to embodiments of the present invention, additionally provides a kind of processor, and the processor is used for operation program,
Wherein, the emulation mode of the transmission line of electricity of the present invention is performed when program is run.
In embodiments of the present invention, by determining the type loaded in transmission line of electricity；Type according to load determines transmission of electricity
The circuit model of the discrete time-domain of circuit；Determine the current-voltage correlation formula of circuit model；By simulation algorithm to Current Voltage
Relational expression is emulated, and obtains the simulation result of transmission line of electricity, and the simulation result for solving transmission line of electricity in correlation technique can not
The technical problem of the actual result of transmission line of electricity is accurately reflected, and then realizing enables the simulation result of transmission line of electricity accurately anti-
Reflect the technique effect of the actual result of transmission line of electricity.
Brief description of the drawings
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, this hair
Bright schematic description and description is used to explain the present invention, does not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 is a kind of flow chart of the emulation mode of optional transmission line of electricity according to embodiments of the present invention；
Fig. 2 is a kind of schematic diagram of the discrete time-domain model of optional transmission line of electricity according to embodiments of the present invention；
Fig. 3 a are a kind of continued time domain moulds of optional transmission line of electricity with inductive load according to embodiments of the present invention
The schematic diagram of type and discrete time-domain model conversion；
Fig. 3 b are a kind of continued time domain moulds of optional transmission line of electricity with capacitive load according to embodiments of the present invention
The schematic diagram of type and discrete time-domain model conversion；
Fig. 4 a are a kind of schematic diagrames of optional AC electric power systems containing inductive load according to embodiments of the present invention；
Fig. 4 b are a kind of schematic diagrames of optional AC electric power systems containing capacitive load according to embodiments of the present invention；
Fig. 4 c are a kind of schematic diagrames of optional direct current power system containing inductive load according to embodiments of the present invention；
Fig. 4 d are a kind of schematic diagrames of optional direct current power system containing capacitive load according to embodiments of the present invention；
Fig. 5 a are a kind of discrete time-domain moulds of optional transmission line of electricity containing inductive load according to embodiments of the present invention
The schematic diagram of type circuit；
Fig. 5 b are a kind of discrete time-domain moulds of optional transmission line of electricity containing capacitive load according to embodiments of the present invention
The schematic diagram of type circuit；
Fig. 6 a are K and M two in a kind of optional AC electric power systems containing inductive load according to embodiments of the present invention
Node transient voltage waveform diagram；
Fig. 6 b are the electric currents in a kind of optional AC electric power systems containing inductive load according to embodiments of the present invention
Waveform diagram；
Fig. 6 c are K and M in another optional AC electric power systems containing inductive load according to embodiments of the present invention
Two node transient voltage waveform diagrams；
Fig. 6 d are the electricity in another optional AC electric power systems containing inductive load according to embodiments of the present invention
Flow waveform diagram；
Fig. 7 a are K and M two in a kind of optional AC electric power systems containing capacitive load according to embodiments of the present invention
Node transient voltage waveform diagram；
Fig. 7 b are the electric currents in a kind of optional AC electric power systems containing capacitive load according to embodiments of the present invention
Waveform diagram；
Fig. 7 c are K and M in another optional AC electric power systems containing capacitive load according to embodiments of the present invention
Two node transient voltage waveform diagrams；
Fig. 7 d are the electricity in another optional AC electric power systems containing capacitive load according to embodiments of the present invention
Flow waveform diagram；
Fig. 8 a are K and M two in a kind of optional direct current power system containing inductive load according to embodiments of the present invention
Node transient voltage waveform diagram；
Fig. 8 b are the electric currents in a kind of optional direct current power system containing inductive load according to embodiments of the present invention
Waveform diagram；
Fig. 8 c are K and M in another optional direct current power system containing inductive load according to embodiments of the present invention
Two node transient voltage waveform diagrams；
Fig. 8 d are the electricity in another optional direct current power system containing inductive load according to embodiments of the present invention
Flow waveform diagram；
Fig. 9 a are K and M two in a kind of optional direct current power system containing capacitive load according to embodiments of the present invention
Node transient voltage waveform diagram；
Fig. 9 b are the electric currents in a kind of optional direct current power system containing capacitive load according to embodiments of the present invention
Waveform diagram；
Fig. 9 c are K and M in another optional direct current power system containing capacitive load according to embodiments of the present invention
Two node transient voltage waveform diagrams；
Fig. 9 d are the electricity in another optional direct current power system containing capacitive load according to embodiments of the present invention
Flow waveform diagram；
Figure 10 a are that a kind of the in kind of the optional AC electric power systems containing inductive load according to embodiments of the present invention connects
Connect schematic diagram；
Figure 10 b are that a kind of the in kind of the optional AC electric power systems containing capacitive load according to embodiments of the present invention connects
Connect schematic diagram；
Figure 10 c are that a kind of the in kind of the optional direct current power system containing inductive load according to embodiments of the present invention connects
Connect schematic diagram；
Figure 10 d are that a kind of the in kind of the optional direct current power system containing capacitive load according to embodiments of the present invention connects
Connect schematic diagram；
Figure 11 is a kind of schematic diagram of the simulator of optional transmission line of electricity according to embodiments of the present invention.
Embodiment
In order that those skilled in the art more fully understand the present invention program, below in conjunction with the embodiment of the present invention
Accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only
The embodiment of a part of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ordinary skill people
The every other embodiment that member is obtained under the premise of creative work is not made, should all belong to the model that the present invention is protected
Enclose.
It should be noted that term " first " in description and claims of this specification and above-mentioned accompanying drawing, "
Two " etc. be for distinguishing similar object, without for describing specific order or precedence.It should be appreciated that so using
Data can exchange in the appropriate case, so as to embodiments of the invention described herein can with except illustrating herein or
Order beyond those of description is implemented.In addition, term " comprising " and " having " and their any deformation, it is intended that cover
Lid is non-exclusive to be included, for example, the process, method, system, product or the equipment that contain series of steps or unit are not necessarily limited to
Those steps or unit clearly listed, but may include not list clearly or for these processes, method, product
Or the intrinsic other steps of equipment or unit.
This application provides a kind of embodiment of the emulation mode of transmission line of electricity.
Fig. 1 is a kind of flow chart of the emulation mode of optional transmission line of electricity according to embodiments of the present invention, such as Fig. 1 institutes
Show, this method comprises the following steps：
Step S101, determines the type loaded in transmission line of electricity：
When being emulated to transmission line of electricity, it is necessary to be modeled to transmission line of electricity, before modeling, it is thus necessary to determine that transmission of electricity
Loadtype in circuit, the load in transmission line of electricity is probably capacitive load or inductive load, is carried out to transmission line of electricity
During modeling, the model that different loadtypes is set up is differed.
Step S102, the type according to load determines the circuit model of the discrete time-domain of transmission line of electricity：
It is determined that after the type loaded in transmission line of electricity, the type according to load determines the discrete time-domain of transmission line of electricity
Circuit model.Emulation mode generally can not transmission line simulation continuous state, it is necessary to which transmission line simulation is under discrete time-domain
State, accordingly, it would be desirable to which the type according to load determines the circuit model of the discrete time-domain of transmission line of electricity.
Step S103, determines the current-voltage correlation formula of circuit model：
After the circuit model of discrete time-domain of transmission line of electricity is determined according to the type of load, the electricity of circuit model is determined
Flow voltage relationship.The current-voltage correlation formula of circuit model being capable of counting circuit model different nodes under the conditions of different parameters
Current parameters, voltage parameter.
Optionally, determining the current-voltage correlation formula of circuit model includes：Load to each node in circuit model is carried out
Analysis obtains modal equation；The electric current of circuit model is determined based on the recurrence relation of each current source in circuit model and modal equation
Voltage relationship.
Step S104, is emulated by simulation algorithm to current-voltage correlation formula, obtains the simulation result of transmission line of electricity.
It is determined that after the current-voltage correlation formula of circuit model, being imitated by simulation algorithm current-voltage correlation formula
Very, the simulation result of transmission line of electricity is obtained.
Current-voltage correlation formula is emulated by simulation algorithm it needs to be determined that simulated conditions, it is determined that transmission line of electricity
After the circuit model of discrete time-domain, the transient emulation condition of circuit model is determined, wherein, when transient emulation condition at least includes
Between step-length, it is determined that after transient emulation condition, current-voltage correlation formula is entered under default simulated conditions by simulation algorithm
Row emulation, obtains the transient current waveform and/or transient voltage waveform of each node in circuit model.
Optionally, current-voltage correlation formula can also be emulated by different simulation algorithms, for example, passing through first
That is emulated to current-voltage correlation formula for kind of simulation algorithm and second simulation algorithm, and what different simulation algorithms was obtained imitates
True result is contrasted, and the degree of accuracy of circuit model is determined according to comparing result.
The embodiment is by determining the type loaded in transmission line of electricity；Type according to load determines the discrete of transmission line of electricity
The circuit model of time domain；Determine the current-voltage correlation formula of circuit model；Current-voltage correlation formula is carried out by simulation algorithm
Emulation, obtain the simulation result of transmission line of electricity, solve the simulation result of transmission line of electricity in correlation technique can not accurately reflect it is defeated
The technical problem of the actual result of electric line, and then realizing enables the simulation result of transmission line of electricity to accurately reflect transmission line of electricity
Actual result technique effect.
Below by taking concrete application scene as an example, the specific steps of the emulation mode of the transmission line of electricity provided above-described embodiment
Illustrate.
Fig. 2 show the conversion regime of long-distance transmission circuit discrete time-domain precircuit, wherein, K and the node on behalf of M two
The node at long-distance transmission circuit two ends.K points apart from output end closer to.Wherein ZoIt is the characteristic impedance of long-distance transmission line.Ikm(t-τ)
And Imk(t- τ), which is represented, can produce the current source of delay effect.
Loadtype in power system can be inductive load or capacitive load, and it is negative that Fig. 3 a show perception
In the conversion regime of the discrete time-domain precircuit of load, Fig. 3 a left figure be in continued time domain model circuit diagram, Fig. 3 a right figure be from
Dissipate Model in Time Domain circuit diagram.In the discrete time-domain model of inductive load, current source hLIt is relevant with time step, and with one
Resistance is 2L/△T impedance is in parallel.Wherein：△T is exactly the time step of discrete time-domain；Fig. 3 b show the discrete of capacitive load
Left figure is that right figure is discrete time-domain mould in continued time domain model circuit diagram, Fig. 3 b in the conversion regime of Model in Time Domain circuit, Fig. 3 b
Type circuit diagram.In the discrete time-domain model of capacitive load, current source hCIt is relevant with time step, and be organized as with one△
T/2C impedance is in parallel.Wherein：△T is the time step of discrete time-domain.
If power system is powered by an AC power, it is necessary to obtain the system in 0-20ms time ranges, K and M
The transient voltage of two nodes and the transient current oscillogram for flowing through inductor.
AC electric power systems containing inductive load as shown in fig. 4 a, such as Fig. 4 b of the AC electric power systems containing capacitive load
It is shown, the direct current power system containing inductive load as illustrated in fig. 4 c, such as Fig. 4 d institutes of the direct current power system containing capacitive load
Show.
Assuming that AC system is powered by an AC power, simulated conditions are to need to obtain the system in 0-20ms time models
In enclosing, the transient voltage oscillogram of K and the nodes of M two.There is a load between AC power and long-distance transmission line, its resistance is Z0
(ohms).It is preferable long-distance transmission line between node K and node M, the parameter existed includes its feature resistance ZC, and during delay
Between τ.Inductor is connected at node M, its size is L=100mH.To calculate voltage transient image, time step is set to
0.1ms.According to long-distance transmission circuit and the transfer principle of the discrete time-domain precircuit of inductive load, the discrete time-domain of the system
Precircuit as shown in Figure 5 a, should according to long-distance transmission circuit and the transfer principle of the discrete time-domain precircuit of capacitive load
The discrete time-domain precircuit of system as shown in Figure 5 b, K node in the AC electric power systems containing inductive load and capacitive load,
M nodes are corresponding with Fig. 5 a, Fig. 5 b interior joints position.
Assuming that straight-flow system is powered by a dc source, simulated conditions are to need to obtain the system in 0-10ms time models
In enclosing, the transient voltage oscillogram of K and the nodes of M two.There is a load between dc source and long-distance transmission line, its resistance is Z0
(ohms).It is preferable long-distance transmission line between node K and node M, the parameter existed includes its feature resistance ZC, and during delay
Between τ.Inductor is connected at node M, its size is L=100mH.To calculate voltage transient image, time step is set to
0.1ms.According to long-distance transmission circuit and the transfer principle of the discrete time-domain precircuit of inductive load, the discrete time-domain of the system
Precircuit as shown in Figure 5 a, should according to long-distance transmission circuit and the transfer principle of the discrete time-domain precircuit of capacitive load
The discrete time-domain precircuit of system as shown in Figure 5 b, K node in the direct current power system containing inductive load and capacitive load,
M nodes are corresponding with Fig. 5 a, Fig. 5 b interior joints position.
The recurrence relation of current source is as follows in discrete model circuit containing inductive load：
According to Fig. 5 a current relationship, it can obtain：
According to two node K and M in the equivalent circuit diagram of discrete time-domain model, modal equation is enumerated：
It is admittance matrix.In admittance matrix the size of each element be two subscript nodes between connect
Connect the inverse of impedance value.Therefore, equation (5) is changed to：
Wherein：ZL=2L/△t
V can obtain according to matrix operation ruleKAnd V (t)M(t) expression formula.
By MATLAB software programming algorithm routines, and finally give node K and M transient voltage oscillogram, Yi Jiliu
Transient current oscillogram through inductor.Programming principle is exactly according to publicity (1)-(8).If the voltage of ac current source is
110kV, the feature resistance Z of long-distance transmission lineC=500 Ω, time delay is τ=1.0ms, time step△T=0.1ms, reactance
Device L=100mH.Resistance Z is loaded between AC power and long-distance transmission line0For variable.So, its transient voltage and current waveform
Figure is exactly parameter Z0Function.Program is as follows：
The program is one independent variable function of definition, the independent variable parameter Z different by inputting0, finally give node K and
M voltage transient image, and flow through the transient current oscillogram of inductor.If impedance Z0=100 Ω, it is necessary to emulate voltage and
Current waveform figure, it is only necessary to parameter value is inserted into SQL position, i.e.,：
trans_AL(100)
Obtain in the AC electric power systems containing inductive load K and the node transient voltage oscillograms of M two as shown in Figure 6 a, with
And flow through the current waveform figure of inductor as shown in Figure 6 b.Change independent variable Z0.Work as Z0During=1000 Ω, in MATLAB softwares
Trans_AL (1000) is inputted, K and the node transient voltage oscillograms of M two under the load condition is obtained as fig. 6 c, flows through
The current temporary state oscillogram of inductor is as shown in fig 6d.
The recurrence relation of current source is as follows in discrete model circuit containing capacitive load：
According to Fig. 5 b current relationship, it can obtain：
The process for enumerating node K and M equation is similar to the process in the above-mentioned discrete model circuit containing inductive load,
It will not be repeated here, enumerate after equation, V can be obtainedKAnd V (t)M(t) expression formula, then passes through MATLAB software programmings
Algorithm routine, and node K and M transient voltage oscillogram are finally given, and the transient current oscillogram of capacitor is flowed through, obtain
Into the AC electric power systems containing capacitive load in impedance Z02 transient voltage oscillograms of K and M such as Fig. 7 a institutes during=500 Ω
Show, the current waveform figure of capacitor is flowed through as shown in Figure 7b, in impedance Z02 transient voltage oscillograms of K and M during=5000 Ω
As shown in Figure 7 c, the current waveform figure of capacitor is flowed through as shown in figure 7d.
The Current Voltage of direct current power system containing inductive load and the direct current power system containing capacitive load is closed
Be formula determination process it is similar to the above process, will not be repeated here, obtain the direct current power system containing inductive load resistance
Anti- Z02 transient voltage oscillograms of K and M as shown in Figure 8 a, flow through current waveform figure such as Fig. 8 b institutes of capacitor during=50 Ω
Show, in impedance Z02 transient voltage oscillograms of K and M as shown in Figure 8 c, flow through the current waveform figure of capacitor such as during=500 Ω
Shown in Fig. 8 d；Direct current power system containing capacitive load is in impedance Z02 transient voltage oscillograms of K and M are such as during=500 Ω
Shown in Fig. 9 a, the current waveform figure of capacitor is flowed through as shown in figure 9b, in impedance Z02 transient voltages of K and M during=5000 Ω
Oscillogram as is shown in fig. 9 c, flows through the current waveform figure of capacitor as shown in figure 9d.
Although however, transient state curve can be obtained by the method for MATLAB software programmings, obtained song can not be verified
Whether line image is correct.Next, identical process is emulated by ATPDraw softwares, the process is simulated again.
In kind connection figure of the AC electric power systems containing inductive load under ATPDraw states as shown in Figure 10 a, contains capacitive load
In kind connection figure of the AC electric power systems under ATPDraw states as shown in fig. lob, the direct current power system containing inductive load
As shown in figure l0c, the direct current power system containing capacitive load is in ATPDraw for the connection figure in kind united under ATPDraw states
Connection figure in kind under state is as shown in fig. 10d.
Exemplified by being emulated to the AC electric power systems containing inductive load by ATPDraw softwares, according to Fig. 5 a institutes
The practical circuit diagram shown, carries out connection in kind by ATPDraw softwares and carries out transient process simulation, as shown in Figure 10 a.Alternating current
Potential source is directly connected to a controlling switch, if switch-closed time is t=0ms.Connection load Z between power supply and node K0, remotely
Power transmission line is realized by element LINEZ.There is inductor L between node M and earth terminal.Needing the K and M of measurement transient voltage
, place voltage probe at 2 points, and current probe is connected in the position for flowing through inductor, to carry out IMAQ simulation.Will be right
The parameter position of counter element in the parameter input emulating image answered, the parameter setting of long-distance transmission line is characterized resistance
500ohms, time delay 0.001s, obtain final transient state curve identical with the curve shown in Fig. 6 a~Fig. 6 d.By to two
The simulation waveform image contrast that simulation algorithm is obtained is planted, is emulated by the image of MATLAB theoretical calculations and by ATPDraw
The image arrived, the shape of oscillogram or numerical value that two kinds of simulation algorithms of contrast are obtained, determine respectively two kinds of simulation algorithms relative to
Another reference accuracy rate of simulation algorithm.
The method that the embodiment is provided can be emulated quickly and accurately to system, can be from technological layer to power network
Safe operation provides reliable support, with huge social and economic benefit, and the achievement is the premise in zero investment, zero cost
Under the conditions of, power system transient simulation and simulation are realized by two kinds of means, simulated effect and function are compared to BPA emulation
Technology, advantage becomes apparent.And emulation technology serves vital effect in support electric power netting safe running.Therefore, originally
Inventing the potential profit brought for enterprise can not despise.Two kinds of emulated computation methods that the present invention is introduced, its result is not only
Checking is errorless, and its principle can realize the simulation calculation of more large scale electric network.The simulation electrical power system transient mistake of this science
The method of journey, its calculating speed is fast, and accuracy is high, and flexibility is strong, is favorably improved intellectuality and the Automated water of operation of power networks
It is flat, provide reliable support to the safe operation of power network from technological layer.
It should be noted that accompanying drawing flow chart though it is shown that logical order, but in some cases, can be with
Shown or described step is performed different from order herein.
Present invention also provides a kind of embodiment of the simulator of transmission line of electricity.
Figure 11 is a kind of schematic diagram of the simulator of optional transmission line of electricity according to embodiments of the present invention, such as Figure 11 institutes
Show, the device includes the first determining unit 10, the second determining unit 20, the 3rd determining unit 30 and simulation unit 40.Wherein,
One determining unit, for determining the type loaded in transmission line of electricity；Second determining unit, is determined defeated for the type according to load
The circuit model of the discrete time-domain of electric line；3rd determining unit, the current-voltage correlation formula for determining circuit model；Emulation
Unit, for being emulated by simulation algorithm to current-voltage correlation formula, obtains the simulation result of transmission line of electricity.
The embodiment is by the first determining unit, for determining the type loaded in transmission line of electricity；Second determining unit, is used
The circuit model of the discrete time-domain of transmission line of electricity is determined in the type according to load；3rd determining unit, for determining circuit mould
The current-voltage correlation formula of type；Simulation unit, for being emulated by simulation algorithm to current-voltage correlation formula, is transmitted electricity
The simulation result of circuit, the actual knot of transmission line of electricity can not be accurately reflected by solving the simulation result of transmission line of electricity in correlation technique
The technical problem of fruit, so realize enable transmission line of electricity simulation result accurately reflect transmission line of electricity actual result skill
Art effect.
Further, the first determining unit includes：Analysis module, is divided for the load to each node in circuit model
Analysis obtains modal equation；First determining module, for true based on the recurrence relation of each current source in circuit model and modal equation
Determine the current-voltage correlation formula of circuit model.
Further, simulation unit includes：Second determining module, for determining transient emulation condition, wherein, transient emulation
Condition includes time step；Emulation module, for being entered by simulation algorithm to current-voltage correlation formula under default simulated conditions
Row emulation, obtains the transient current waveform and/or transient voltage waveform of each node in circuit model.
Further, simulation unit includes：Contrast module, for by different simulation algorithms to current-voltage correlation formula
Emulated, the simulation result that different simulation algorithms is obtained is contrasted；3rd determining module, for according to comparing result
Determine circuit model the degree of accuracy,.
Above-mentioned device can include processor and memory, and said units can be stored in storage as program unit
In device, corresponding function is realized by the said procedure unit of computing device storage in memory.
Memory potentially includes the volatile memory in computer-readable medium, random access memory (RAM) and/
Or the form, such as read-only storage (ROM) or flash memory (flash RAM) such as Nonvolatile memory, memory is deposited including at least one
Store up chip.
The order of above-mentioned the embodiment of the present application does not represent the quality of embodiment.
In above-described embodiment of the application, the description to each embodiment all emphasizes particularly on different fields, and does not have in some embodiment
The part of detailed description, may refer to the associated description of other embodiment.In several embodiments provided herein, it should be appreciated that
Arrive, disclosed technology contents can be realized by another way.
Wherein, device embodiment described above is only schematical, such as division of described unit, can be one
Kind of division of logic function, can there is other dividing mode when actually realizing, such as multiple units or component can combine or
Another system is desirably integrated into, or some features can be ignored, or do not perform.It is another, it is shown or discussed it is mutual it
Between coupling or direct-coupling or communication connection can be the INDIRECT COUPLING or communication link of unit or module by some interfaces
Connect, can be electrical or other forms.
In addition, each functional unit in the application each embodiment can be integrated in a processing unit, can also
That unit is individually physically present, can also two or more units it is integrated in a unit.Above-mentioned integrated list
Member can both be realized in the form of hardware, it would however also be possible to employ the form of SFU software functional unit is realized.
If the integrated unit is realized using in the form of SFU software functional unit and as independent production marketing or used
When, it can be stored in a computer read/write memory medium.Understood based on such, the technical scheme of the application is substantially
The part contributed in other words to prior art or all or part of the technical scheme can be in the form of software products
Embody, the computer software product is stored in a storage medium, including some instructions are to cause a computer
Equipment (can for personal computer, server or network equipment etc.) perform the application each embodiment methods described whole or
Part steps.And foregoing storage medium includes：USB flash disk, read-only storage (ROM, Read-Only Memory), arbitrary access are deposited
Reservoir (RAM, Random Access Memory), mobile hard disk, magnetic disc or CD etc. are various can be with store program codes
Medium.
Described above is only the preferred embodiment of the application, it is noted that for the ordinary skill people of the art
For member, on the premise of the application principle is not departed from, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as the protection domain of the application.
Claims (10)
1. a kind of emulation mode of transmission line of electricity, it is characterised in that including：
Determine the type loaded in transmission line of electricity；
Type according to the load determines the circuit model of the discrete time-domain of the transmission line of electricity；
Determine the current-voltage correlation formula of the circuit model；
The current-voltage correlation formula is emulated by simulation algorithm, the simulation result of the transmission line of electricity is obtained.
2. according to the method described in claim 1, it is characterised in that determine the current-voltage correlation formula bag of the circuit model
Include：
Load to each node in the circuit model analyze obtaining modal equation；
Recurrence relation based on each current source in the circuit model determines the electric current of the circuit model with the modal equation
Voltage relationship.
3. according to the method described in claim 1, it is characterised in that the current-voltage correlation formula is carried out by simulation algorithm
Emulation, obtaining the simulation result of the transmission line of electricity includes：
Transient emulation condition is determined, wherein, the transient emulation condition includes time step；
The current-voltage correlation formula is emulated under the default simulated conditions by simulation algorithm, the circuit is obtained
The transient current waveform and/or transient voltage waveform of each node in model.
4. according to the method described in claim 1, it is characterised in that the current-voltage correlation formula is carried out by simulation algorithm
Emulation, obtaining the simulation result of the transmission line of electricity includes：
The current-voltage correlation formula is emulated by different simulation algorithms, the emulation obtained to different simulation algorithms
As a result contrasted；
The degree of accuracy of the circuit model is determined according to comparing result.
5. a kind of simulator of transmission line of electricity, it is characterised in that including：
First determining unit, for determining the type loaded in transmission line of electricity；
Second determining unit, the circuit model of the discrete time-domain of the transmission line of electricity is determined for the type according to the load；
3rd determining unit, the current-voltage correlation formula for determining the circuit model；
Simulation unit, for being emulated by simulation algorithm to the current-voltage correlation formula, obtains the transmission line of electricity
Simulation result.
6. device according to claim 5, it is characterised in that first determining unit includes：
Analysis module, for the load to each node in the circuit model analyze obtaining modal equation；
First determining module, institute is determined for the recurrence relation based on each current source in the circuit model and the modal equation
State the current-voltage correlation formula of circuit model.
7. device according to claim 5, it is characterised in that the simulation unit includes：
Second determining module, for determining transient emulation condition, wherein, the transient emulation condition includes time step；
Emulation module, for being imitated by simulation algorithm under the default simulated conditions the current-voltage correlation formula
Very, the transient current waveform and/or transient voltage waveform of each node in the circuit model are obtained.
8. device according to claim 5, it is characterised in that the simulation unit includes：
Contrast module, for being emulated by different simulation algorithms to the current-voltage correlation formula, to different emulation
The simulation result that algorithm is obtained is contrasted；
3rd determining module, the degree of accuracy for determining the circuit model according to comparing result.
9. a kind of storage medium, it is characterised in that the storage medium includes the program of storage, wherein, in described program operation
When control the storage medium where equipment perform claim require the emulation mode of the transmission line of electricity described in 1 to 4 any one.
10. a kind of processor, it is characterised in that the processor is used for operation program, wherein, right of execution when described program is run
Profit requires the emulation mode of the transmission line of electricity described in 1 to 4 any one.
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| CN113592107A (en) * | 2021-07-19 | 2021-11-02 | 广东电网能源发展有限公司 | Bypass simulation method and system of power transmission line, intelligent terminal and storage medium |
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