CN109635360A - Lightning Strike Risk Evaluation method and device based on cascade emulation - Google Patents
Lightning Strike Risk Evaluation method and device based on cascade emulation Download PDFInfo
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Abstract
The present invention provides a kind of Lightning Strike Risk Evaluation method and device based on cascade emulation.This method comprises: the three-dimensional electric field model and two-dimensional circuit model of building target area；It in the three-dimensional electric field mode input electromagnetic field simulation software, will obtain under predetermined lightning stroke energy, the magnetic distribution in three-dimensional electric field model；Transient pulse waveform is converted by the magnetic distribution；By in the two-dimensional circuit mode input circuit simulating software, using the transient pulse waveform as energy source, circuit response message is obtained；And Lightning Strike Risk Evaluation is carried out to the target area by the circuit response message.This disclosure relates to based on cascade emulation Lightning Strike Risk Evaluation method and device, can from multiple angles for lightning stroke analyze, improve distribution network reliability.
Description
Technical field
The present invention relates to computer information processing fields, in particular to a kind of thunderbolt risk based on cascade emulation
Appraisal procedure and device.
Background technique
10kV, 35kV medium-voltage distribution circuit are that China distribution face is most wide, directly distribute the network of electric energy to users, by
In its netted line construction, the reasons such as dielectric level is low are limited to, damage to crops caused by thunder problem is all very prominent all the time.Distribution line
For failure substantially as caused by lightening hazard, caused trip-out rate nearly reaches the 2/3 or more of route whole trip-out rate.
Route lightening hazard takes place frequently, and large area trips so that some substations distribution line in lightening activity is caused all to finish.
So the main reason for damage to crops caused by thunder is distribution network reliability decline.It is damaged caused by every year because of route lightening hazard to national economy
It loses and is up to over ten billion Yuan RMB.It would therefore be highly desirable to carry out the further investigation to medium-voltage distribution circuit lightning protection key technology, mention
High distribution network reliability, torsion lightening hazard cause the situation of huge loss to national economy.
Currently, being both at home and abroad jejune in the lightning protection research field of distribution line.To find out its cause, being that power distribution network is anti-
Thunder measure is few, relies primarily on protection of arrester, and low pressure fills surge protection, this not can effectively prevent the route thunder of responsible consumer
Tripping is hit, electrical equipment and microelectronic device are broken.In addition, since power distribution network distribution face is wider, for extreme terrain and gas
The influence of thunder activity law, thunder and lightning to power grid as under the conditions of makes clear of completely not yet, does not set up perfect match
Electric network thunderstorm damage risk assessment and hierarchy system.These problems all cause the technical stagnation of lightning-strike effectiveness analysis aspect.
Therefore, it is necessary to a kind of new Lightning Strike Risk Evaluation method and devices based on cascade emulation.
Above- mentioned information are only used for reinforcing the understanding to the background of the disclosure, therefore it disclosed in the background technology part
It may include the information not constituted to the prior art known to persons of ordinary skill in the art.
Summary of the invention
In view of this, the present invention, which discloses, provides a kind of Lightning Strike Risk Evaluation method and device based on cascade emulation, it can
Lightning stroke is analyzed from multiple angles, improves distribution network reliability.
Other characteristics and advantages of the disclosure will be apparent from by the following detailed description, or partially by the disclosure
Practice and acquistion.
According to the one side of the disclosure, a kind of Lightning Strike Risk Evaluation method based on cascade emulation is proposed, this method comprises:
Construct the three-dimensional electric field model and two-dimensional circuit model of target area；By the three-dimensional electric field mode input electromagnetic field simulation software
In, it obtains under predetermined lightning stroke energy, the magnetic distribution in three-dimensional electric field model；Transient state is converted by the magnetic distribution
Impulse waveform；By in the two-dimensional circuit mode input circuit simulating software, using the transient pulse waveform as energy source, obtain
Sense circuit response message；And Lightning Strike Risk Evaluation is carried out to the target area by the circuit response message.
In a kind of exemplary embodiment of the disclosure, the three-dimensional electric field model and two-dimensional circuit model of target area are constructed
It include: the three-dimensional electric field model that the target area is constructed by automatic computing engine Autocad；With or set by electronics
The two-dimensional circuit model of target area described in the Automation Design software building is counted, the two-dimensional circuit model is analog circuit mould
Type.
In a kind of exemplary embodiment of the disclosure, by the three-dimensional electric field mode input electromagnetic field simulation software,
It obtains under predetermined lightning stroke energy, the magnetic distribution in three-dimensional electric field model includes: according to the history of target area lightning stroke number
Make a reservation for lightning stroke energy according to determining；By in the three-dimensional electric field mode input electromagnetic field simulation software, by the predetermined lightning stroke energy
Electromagnetic-field simulation calculating is carried out as emulation trigger source；And acquisition table after calculating in the three-dimensional electric field model
Face magnetic distribution.
In a kind of exemplary embodiment of the disclosure, the electromagnetic field simulation software includes: CST, HFSS, and
FEKO。
In a kind of exemplary embodiment of the disclosure, converting transient pulse waveform for the magnetic distribution includes:
Transient pulse waveform is converted by the magnetic distribution by way of extracting equivalent circuit.
In a kind of exemplary embodiment of the disclosure, by the two-dimensional circuit mode input circuit simulating software, incite somebody to action
For the transient pulse waveform as energy source, obtaining circuit response message includes: to imitate the two-dimensional circuit mode input circuit
In true software, using the transient pulse waveform as equivalent current source, carries out emulation and obtain circuit response message；With or
By in the two-dimensional circuit mode input circuit simulating software, using the transient pulse waveform as equivalent voltage source, imitated
It is true to obtain circuit response message.
In a kind of exemplary embodiment of the disclosure, the circuit simulating software includes: Cadence, Matlab, and
Pspice。
In a kind of exemplary embodiment of the disclosure, thunder is carried out to the target area by the circuit response message
Shooting risk evaluating includes: the lightning stroke weak spot determined in the target area by the circuit response message.
In a kind of exemplary embodiment of the disclosure, thunder is carried out to the target area by the circuit response message
Shooting risk evaluating includes: to determine the general of single-phase earthing in the target area and phase fault by the circuit response message
Rate.
According to the one side of the disclosure, propose that a kind of Lightning Strike Risk Evaluation device based on cascade emulation, the device include:
Model module, for constructing the three-dimensional electric field model and two-dimensional circuit model of target area；Three-dimensional electric field module, being used for will be described
It in three-dimensional electric field mode input electromagnetic field simulation software, obtains under predetermined lightning stroke energy, the electromagnetic field in three-dimensional electric field model
Distribution；Conversion module, for converting transient pulse waveform for the magnetic distribution；Two-dimensional circuit module, being used for will be described
In two-dimensional circuit mode input circuit simulating software, using the transient pulse waveform as energy source, circuit response message is obtained；
And risk evaluation module, for carrying out Lightning Strike Risk Evaluation to the target area by the circuit response message.
According to the one side of the disclosure, a kind of electronic equipment is proposed, which includes: one or more processors；
Storage device, for storing one or more programs；When one or more programs are executed by one or more processors, so that one
A or multiple processors realize such as methodology above.
According to the one side of the disclosure, it proposes a kind of computer-readable medium, is stored thereon with computer program, the program
Method as mentioned in the above is realized when being executed by processor.
According to the Lightning Strike Risk Evaluation method and device based on cascade emulation of the disclosure, by cascade mode, respectively
Combine from electromagnetic field with the angle of circuit and simulation analysis is carried out to lightning-strike effectiveness, and is carried out by emulation data to thunderbolt risk
The mode of assessment can analyze lightning stroke from multiple angles, improve distribution network reliability.
It should be understood that the above general description and the following detailed description are merely exemplary, this can not be limited
It is open.
Detailed description of the invention
Its example embodiment is described in detail by referring to accompanying drawing, above and other target, feature and the advantage of the disclosure will
It becomes more fully apparent.Drawings discussed below is only some embodiments of the present disclosure, for the ordinary skill of this field
For personnel, without creative efforts, it is also possible to obtain other drawings based on these drawings.
Fig. 1 is a kind of Lightning Strike Risk Evaluation method and device based on cascade emulation shown according to an exemplary embodiment
System block diagram.
Fig. 2 is a kind of process of Lightning Strike Risk Evaluation method based on cascade emulation shown according to an exemplary embodiment
Figure.
Fig. 3 is a kind of showing for the Lightning Strike Risk Evaluation method based on cascade emulation shown according to another exemplary embodiment
It is intended to.
Fig. 4 is a kind of frame of Lightning Strike Risk Evaluation device based on cascade emulation shown according to an exemplary embodiment
Figure.
Fig. 5 is the block diagram of a kind of electronic equipment shown according to an exemplary embodiment.
Fig. 6 is that a kind of computer readable storage medium schematic diagram is shown according to an exemplary embodiment.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be real in a variety of forms
It applies, and is not understood as limited to embodiment set forth herein；On the contrary, thesing embodiments are provided so that the disclosure will be comprehensively and complete
It is whole, and the design of example embodiment is comprehensively communicated to those skilled in the art.Identical appended drawing reference indicates in figure
Same or similar part, thus repetition thereof will be omitted.
In addition, described feature, structure or characteristic can be incorporated in one or more implementations in any suitable manner
In example.In the following description, many details are provided to provide and fully understand to embodiment of the disclosure.However,
It will be appreciated by persons skilled in the art that can with technical solution of the disclosure without one or more in specific detail,
Or it can be using other methods, constituent element, device, step etc..In other cases, it is not shown in detail or describes known side
Method, device, realization or operation are to avoid fuzzy all aspects of this disclosure.
Block diagram shown in the drawings is only functional entity, not necessarily must be corresponding with physically separate entity.
I.e., it is possible to realize these functional entitys using software form, or realized in one or more hardware modules or integrated circuit
These functional entitys, or these functional entitys are realized in heterogeneous networks and/or processor device and/or microcontroller device.
Flow chart shown in the drawings is merely illustrative, it is not necessary to including all content and operation/step,
It is not required to execute by described sequence.For example, some operation/steps can also decompose, and some operation/steps can close
And or part merge, therefore the sequence actually executed is possible to change according to the actual situation.
It should be understood that although herein various assemblies may be described using term first, second, third, etc., these groups
Part should not be limited by these terms.These terms are to distinguish a component and another component.Therefore, first group be discussed herein below
Part can be described as the second component without departing from the teaching of disclosure concept.As used herein, term " and/or " include associated
All combinations for listing any of project and one or more.
It will be understood by those skilled in the art that attached drawing is the schematic diagram of example embodiment, module or process in attached drawing
Necessary to not necessarily implementing the disclosure, therefore it cannot be used for the protection scope of the limitation disclosure.
Power distribution network dielectric level is low, and lightening hazard occurs frequently, to be affected to power distribution network, as people are to power train
The requirement for power supply reliability of uniting is higher and higher, also higher and higher to the attention degree of electric system lightning protection.To reduce damage to crops caused by thunder
Accident, improves power supply reliability, and more new technologies, new material are constantly widely used in power train by domestic and foreign scholars
System.Since the Japanese scholars sixties in last century find zinc oxide pressure-sensitive characteristic, the metal with excellent C-V characteristic is aoxidized
Zinc resistor disc and metal oxide arrester develop rapidly.Domestic expert begins one's study from the 60 to 70's of last century
Zinc-oxide piezoresistor characteristic, and Yu Qishi has carried out a large amount of scientific research element task, first metal zinc oxide lightning arrester
Using on the 10kV route that continent area is raved in Hainan.It is advanced that the eighties metal zinc oxide lightning arrester by two ministries and commissions is accredited as the world
Level, then domestic Zinc-Oxide Arrester manufacturing industry starts to grow rapidly.
For the research of transmission line of electricity lightning protection theory and protective device, it is clear that both at home and abroad in the thunder and lightning of distribution line
Protective Research field is jejune.To find out its cause, being that power distribution network lightning protection measures are few, protection of arrester, low pressure are relied primarily on
Surge protection is filled, this not can effectively prevent the transmission line caused by lightning strike of responsible consumer, breaks electrical equipment and microelectronic device.Oxygen
The advantages of changing zinc arrester is it will be evident that still there is also disadvantage, and operation voltage and residual voltage parameter fix, is easy to aging, rapid wear
Bad and operating cost is high, other than necessary periodic maintenance and replacement, can not achieve the differentiation and essence of power distribution network and equipment at all
Refine requirement of shelter.In addition, being advised since power distribution network distribution face is wider for the lightening activity under extreme terrain and meteorological condition
Rule, influence of the thunder and lightning to power grid make clear of completely not yet, do not set up perfect power distribution network damage to crops caused by thunder risk assessment and divide
Grade system.Currently, China is also useless in terms of power distribution network lightning protection to form unified standard, some distribution lines and substation are used
Incorrect lightning protection measures or lightning protection device, can not play the effect of lightning protection, anti-tripping effectively not only, rise instead
Draw Lei Zuoyong to opposite, causes more serious lightening hazard；There are also some substations, and lightning flashover rate, recognizes in order to prevent
For the dielectric level for improving route, so lightning flashover rate improves, but consequent is that dielectric level height is led
It causes lightning surge that can not release, after invading substation along route, breaks the controller switching equipment of responsible consumer or be transmitted to low pressure
Break low pressure microelectronic device in side.All there are many distribution transformer, arrester, insulator, conducting wires etc. every year broken by thunder or
The lightening hazards such as broken string occur, this also exactly illustrates vulnerability of the China in terms of power distribution network protection.
Scientific research institution, American-European countries relies on its advanced scientific and technological level, to the origin cause of formation of thunder and lightning, generation, development and to power grid
Effect study it is very deep.The U.S., France and the former Soviet Union have all formd complete theoretical system, also grind in power grid lightning protection
Study carefully and many perfect, mature lightning protection measures, especially in direct lightning strike protection and route incoming wave.Japan due to being island country,
Lightening activity is strong, has conducted extensive research to power grid lightning protection, especially in arrester development, in addition to developing various routines
Power station type Zinc-Oxide Arrester outside, also develop arrester and portable protective gaps for electric line emphatically, and in electricity
Advanced international standard is on net shocking preventing technology.But the developed countries such as America and Europe still seem not in terms of power distribution network differentiated lightning protection
Foot lacks the protective device to controller switching equipment, and the ability for causing its power grid to resist accident is also weaker.
Due to the exploitation of otherness and simulation software of the induced overvoltage on three-phase distribution route of lightning stroke, because of induction
The transient characterisitics of lightning overvoltage have biggish complexity and randomness, and mathematical modeling is difficult to accomplish and true lightning performance
It is fully equivalent, so, in the disclosure, combine multiple actual experiment data to carry out modified mode repeatedly by emulation data,
Lightning stroke simulation software at night reaches and distribution line lightning stroke is greatly reduced to be analyzed by the lightning stroke simulation software lightning-strike effectiveness
Trip-out rate improves the purpose of operational reliability.
Below with reference to specific embodiment, the detailed content of the application is described.
Fig. 1 is a kind of Lightning Strike Risk Evaluation method and device based on cascade emulation shown according to an exemplary embodiment
System block diagram.
As shown in Figure 1, system architecture 100 may include terminal device 101,102,103, network 104 and server 105.
Network 104 between terminal device 101,102,103 and server 105 to provide the medium of communication link.Network 104 can be with
Including various connection types, such as wired, wireless communication link or fiber optic cables etc..
User can be used terminal device 101,102,103 and be interacted by network 104 with server 105, to receive or send out
Send message etc..Various telecommunication customer end applications, such as the application of shopping class, net can be installed on terminal device 101,102,103
The application of page browsing device, searching class application, instant messaging tools, mailbox client, social platform software etc..
Terminal device 101,102,103 can be the various electronic equipments with display screen and supported web page browsing, packet
Include but be not limited to smart phone, tablet computer, pocket computer on knee and desktop computer etc..
Server 105 can be to provide the server of various services, such as utilize terminal device 101,102,103 to user
The target object for the risk analysis of being carried out provides the server that background analysis is supported.Server 105 can be to the mesh received
Mark object carries out the processing such as analyzing, and processing result (risk assessment data) is fed back to terminal device.
Server 105 can for example construct the three-dimensional electric field model and two-dimensional circuit model of target area；Server 105 can example
As will be described in three-dimensional electric field mode input electromagnetic field simulation software, obtain under predetermined lightning stroke energy, in three-dimensional electric field model
Magnetic distribution；Server 105 for example can convert transient pulse waveform for the magnetic distribution；Server 105 can example
As will be described in two-dimensional circuit mode input circuit simulating software, using the transient pulse waveform as energy source, circuit is obtained
Response message；Server 105 for example can carry out Lightning Strike Risk Evaluation to the target area by the circuit response message.
Server 105 can be the server of an entity, also may be, for example, multiple server compositions, needs to illustrate
It is that the Lightning Strike Risk Evaluation method based on cascade emulation provided by the embodiment of the present disclosure can be executed by server 105, accordingly
Ground, the Lightning Strike Risk Evaluation device based on cascade emulation can be set in server 105.
Fig. 2 is a kind of process of Lightning Strike Risk Evaluation method based on cascade emulation shown according to an exemplary embodiment
Figure.Lightning Strike Risk Evaluation method 20 based on cascade emulation includes at least step S202 to S208.
As shown in Fig. 2, constructing the three-dimensional electric field model and two-dimensional circuit model of target area in S202.
Wherein, the three-dimensional electric field model and two-dimensional circuit model for constructing target area include: to be assisted by automatic computing engine
Design software constructs the three-dimensional electric field model of the target area；With or by electric design automation design software construct institute
The two-dimensional circuit model of target area is stated, the two-dimensional circuit model is analog circuit model.
Wherein, automatic computing engine Autocad includes: AutoCAD software, electric design automation design software packet
Include Cadence.
In S204, in the three-dimensional electric field mode input electromagnetic field simulation software, it will obtain under predetermined lightning stroke energy,
Magnetic distribution in three-dimensional electric field model.
In one embodiment, it in the three-dimensional electric field mode input electromagnetic field simulation software, will obtain in predetermined lightning stroke
Under energy, the magnetic distribution in three-dimensional electric field model includes: to determine predetermined lightning stroke according to the history of target area lightning stroke data
Energy；By in the three-dimensional electric field mode input electromagnetic field simulation software, using the predetermined lightning stroke energy as emulation trigger source
Carry out electromagnetic-field simulation calculating；And acquisition surface magnetic distribution after calculating in the three-dimensional electric field model.
Wherein, the electromagnetic field simulation software includes: CST, HFSS and ADS.
Wherein, CST, 3 D electromagnetic field simulation software.CST is to design work towards 3D electromagnetism, circuit, temperature and structural stress
A professional Simulating software package comprehensively, accurate, integrated level is high of Cheng Shi.Comprising eight studio softwares, it is integrated in same
In one user interface, complete system-level and component-level numerical simulation is provided for user and is optimized.Software covers entire electromagnetism frequency
Section, provides complete time domain and frequency domain full-wave electromagnetic algorithm and high frequency algorithm.Typical case include electromagnetic compatibility, antenna/RCS,
High speed interconnection SI/EMI/PI/ figures, mobile phone, nuclear magnetic resonance, electric vacuum tube, particle accelerator, High-Power Microwave, nonlinear opticals
All kinds of collaborative simulations such as, electrical, field road, electromagnetism-temperature and temperature-deformation.
Wherein, HFSS is the 3 D electromagnetic simulation software that Ansoft company releases, at present by ANSYS corporate buyout；It is
First commercialized three-dimensional structure electromagnetic field simulation software in the world, the work of industry generally acknowledged 3 D electromagnetic field design and analysis
Industry standard.HFSS provides succinct intuitive user's design interface, the field of precision adaptive solves device, possesses unprecedented electrical property point
The powerful preprocessor of analysis ability can calculate the S parameter and full-wave electromagnetic field of arbitrary shape three-dimensional passive structures.HFSS is soft
Part possesses powerful Antenna Design function, it can calculate antenna parameter, such as gain, directionality, far-field pattern section, far field
3D figure and three dB bandwidth；Draw polarization characteristic, including spherical field component, circular polarisation field component, Ludwig third define field component and
Axis ratio.HFSS covers all links of high-frequency design.
Wherein, FEKO software is a powerful three-dimensional full-wave electromagnetic simulation software under EMSS house flag.FEKO method
Make it possible Accurate Analysis TV university problem.FEKO supports finite element method (FEM), and MLFMM is mixed with FEM and is asked
Solution, MLFMM+FEM hybrid algorithm can solve the electrically large sizes problem of non-uniform dielectric containing height.
Can be determined according to the different characteristic of target area selects different simulation softwares to be calculated, can be for example, emulation room
When the target objects such as the cable of the electrically large sizes in external environment or the lightning rod being mounted in high building, the time domains such as CST can be passed through
Electromagnetic field simulation software carries out simulation analysis；And in the scene of the lightning protection or substation facilities that emulate such as electric substation, it can lead to
The softwares such as HFSS are crossed to be emulated.
In S206, transient pulse waveform is converted by the magnetic distribution.It can be by way of extracting equivalent circuit
Transient pulse waveform is converted by the magnetic distribution.
It specifically can be for example, converting transient current waveform for the magnetic distribution by way of extracting equivalent circuit；
It can also be for example, converting transient voltage waveform for the magnetic distribution by way of extracting equivalent circuit.
In S208, by the two-dimensional circuit mode input circuit simulating software, using the transient pulse waveform as
Energy source obtains circuit response message.
In one embodiment, by the two-dimensional circuit mode input circuit simulating software, by the transient pulse wave
Shape carries out emulation and obtains circuit response message as equivalent current source.
In one embodiment, by the two-dimensional circuit mode input circuit simulating software, by the transient pulse wave
Shape carries out emulation and obtains circuit response message as equivalent voltage source.
The circuit simulating software includes: Cadence, Matlab and Pspice.
Wherein, Cadence system interconnection platform can be across integrated circuit, encapsulation and PCB collaborative design high-performance interconnection.It answers
With the collaborative design method of platform, engineer can optimize rapidly between I/O buffer and across integrated circuit, encapsulation and PCB
System interconnection.This method is avoided that hardware does over again and reduces hardware cost and shorten the design cycle.The Allegro of Constraints driven flows
Journey includes Premium Features for designing capture, signal integrity and physics realization.Since it also obtains Cadence Encounter
With the support of Virtuoso platform, Allegro collaborative design method efficiently to design chain collaboration and becomes a reality.
Wherein, PSPICE software has the function of powerful circuit diagram drafting, breadboardin copying, symplectic algorithm function
It can be inputted to graphically with component symbol making function, carry out channel check automatically, generate chart, simulation and calculating electricity
Road.Its purposes is very extensive, can be not only used for circuit analysis and optimization design, it may also be used for electronic circuit, circuit and letter
Computer-assisted instruction number with the courses such as system.It is used cooperatively with printing version design software, it is automatic to can also be achieved Electronic Design
Change.
In S210, Lightning Strike Risk Evaluation is carried out to the target area by the circuit response message.
In one embodiment, the lightning stroke weak spot in the target area is determined by the circuit response message.?
In one embodiment, although can for example, power distribution network lightning stroke probability of sustained arc mechanism, lightning current amplitude is big, wavelength it is short (100 μ s are left,
It is right), protection act value is not achieved, can't make route hopscotch, the reason of line tripping be under the action of power grid power-frequency voltage,
It is single-phase in this way to puncture over the ground along the power frequency continued flow that the channel punctured by thunder and lightning is flowed through, this electric current with regard to electric network capacitance and current,
Claim power frequency continued flow.
The probability of stable power frequency short circuit current can be established after insulator lightning stroke flashover, arc is built in the lightning stroke of referred to as power distribution network
Rate, it is related with the size of power frequency short circuit current, to see whether it is greater than the blow-out critical value of power grid, if single-line to ground fault
Electric current IjdIt is smaller, it is less than blow-out critical value Ilj(10kv power grid is 11.4A), since dielectric strength is restored quickly, it is difficult to hit again
It wears, so temporary blow-out can be changed into permanent blow-out；When electric current is larger, and earth current flows through zero point each time, electric arc
There will be a temporary extinguishing, when restoring there is it will happen again to puncture over the ground when voltage is more than its recovery strength, when comparing
When big, the time of this temporary extinguishing is insignificant, it is believed that electric arc is stable burning, it is established that stable ground connection is short
Road electric arc.Probability of sustained arc η is related with the average field intensity E in power frequency arc road, also with the instantaneous value of flashover moment power-frequency voltage and
Go the condition of dissociation related.
According to experiment and operating experience, η: η=4.5E can be calculated as follows0.75- 14 (%), wherein E is insulator chain
Average running voltage (virtual value) gradient, kV/m.To system with effectively earthed neutralTo neutral non-effective grounding
System, single-phase flashover will not cause to trip, and only just will cause alternate flashover after the second phase conductor flashover and trip, thereforeWherein ueFor route voltage rating (virtual value), kV；l1For insulator chain length, m；l2For wooden cross arm route
Wire spacing, m, to cross-arm and armored concrete cross-arm route, l2=0.
The lightning stroke weak spot in the target area is determined by the circuit response message, to matching in a specific region
The thunder that the electric line research position that thunderstorm point occurs in lightening activity occurs at a distance from distribution line and in distribution line
Failure is hit, calculates the lightning surge width that distribution line generates according to lightning induced voltage software for calculation is generated on distribution line
Whether value, resistance to thunder level and the lightning protection measures for assessing distribution line route are reliable, if there are insulation weak-points, are differentiated lightning protection
Foundation is provided.
In one embodiment, single-phase earthing in the target area and alternate is determined by the circuit response message
The probability of short circuit.
In another embodiment, power distribution network single-phase earthing can't cause line tripping, because distribution line is usually not
If zero-sequenceprotection, power distribution network can be run 2 hours with singlephase earth fault, and the insulation that electric arc sustained combustion dissociates air can be by list
Mutually ground connection development is phase fault, makes line tripping, and the insulation that can also destroy insulator keeps line insulator generation permanent
Fault point；If power frequency continued flow is bigger after breakdown, lasting ground arc will make air that hot free and photoionization occur, can wave
And the multi circuit transmission lines joint used, since the distance between each circuit for joint using is smaller, then the free of electric arc can involve
To other circuits, causes the multiloop joint used that short circuit accident occurs, multi circuit transmission lines will be will cause when serious while being tripped,
The strong influence power supply reliability of distribution line.
In another embodiment, some mountain area distribution line shaft towers, since soil resistivity is very high, by connecing for shaft tower
Ground resistance drop to the permissible value (10 Ω) of regulation or less be it is very difficult, needed at this time from the angle research of lightning protection safety impact
Optimization method and device improves the local assault characteristic of grounding-for-lightning device, strengthens the diffusion of lightning current, improves ground connection Denso
The impact Potential distribution and field distribution set reduce the impulse earthed resistance of grounding-for-lightning device, and it is dynamic to reduce lightning protection device
The lightning surge that protected device is acted on after work reaches effective lightning protection effect.
According to the Lightning Strike Risk Evaluation method based on cascade emulation of the disclosure, by cascade mode, respectively from electromagnetism
Field, which is combined with the angle of circuit, carries out simulation analysis to lightning-strike effectiveness, and is being assessed by emulating data thunderbolt risk
Mode can analyze lightning stroke from multiple angles, improve distribution network reliability.
It will be clearly understood that the present disclosure describes how to form and use particular example, but the principle of the disclosure is not limited to
These exemplary any details.On the contrary, the introduction based on disclosure disclosure, these principles can be applied to many other
Embodiment.
Fig. 3 is a kind of showing for the Lightning Strike Risk Evaluation method based on cascade emulation shown according to another exemplary embodiment
It is intended to.Fig. 3 describes the simulation result of lightning-strike effectiveness analysis method by schematic diagram.The three-dimensional electric field of target area is constructed first
Model and two-dimensional circuit model；Then it in the three-dimensional electric field mode input electromagnetic field simulation software, will obtain in predetermined lightning stroke
Magnetic distribution under energy, in three-dimensional electric field model；In turn, transient pulse waveform is converted by the magnetic distribution；So
Afterwards by the two-dimensional circuit mode input circuit simulating software, using the transient pulse waveform as energy source, circuit is obtained
Response message；And Lightning Strike Risk Evaluation is carried out to the target area by the circuit response message.
It, can be successively research in project research process according to the Lightning Strike Risk Evaluation method based on cascade emulation of the disclosure
Achievement is implemented in pilot route, and distribution line tripping rate with lightning strike has been greatly reduced, and tripping rate with lightning strike can be made to reduce by 50%, made
Controller switching equipment broken by lightning rate reduces by 80%, to the loss of reduction national economy and improves company's interest and mentions for distribution network construction
For the technical standard of more practicability and effectiveness specification, to construction smart grid and sturdy power grid, all there is far reaching significance.
It will be appreciated by those skilled in the art that realizing that all or part of the steps of above-described embodiment is implemented as being executed by CPU
Computer program.When the computer program is executed by CPU, above-mentioned function defined by the above method that the disclosure provides is executed
Energy.The program can store in a kind of computer readable storage medium, which can be read-only memory, magnetic
Disk or CD etc..
Further, it should be noted that above-mentioned attached drawing is only the place according to included by the method for disclosure exemplary embodiment
Reason schematically illustrates, rather than limits purpose.It can be readily appreciated that above-mentioned processing shown in the drawings is not indicated or is limited at these
The time sequencing of reason.In addition, be also easy to understand, these processing, which can be, for example either synchronously or asynchronously to be executed in multiple modules.
Following is embodiment of the present disclosure, can be used for executing embodiments of the present disclosure.It is real for disclosure device
Undisclosed details in example is applied, embodiments of the present disclosure is please referred to.
Fig. 4 is a kind of frame of Lightning Strike Risk Evaluation device based on cascade emulation shown according to an exemplary embodiment
Figure.Lightning Strike Risk Evaluation device 40 based on cascade emulation includes: model module 402, three-dimensional electric field module 404, conversion module
406, two-dimensional circuit module 408 and risk evaluation module 410.
Model module 402 is used to construct the three-dimensional electric field model and two-dimensional circuit model of target area；Wherein, target is constructed
The three-dimensional electric field model and two-dimensional circuit model in region include: to construct the target area by automatic computing engine Autocad
The three-dimensional electric field model in domain；With or construct by electric design automation design software the two-dimensional circuit mould of the target area
Type, the two-dimensional circuit model are analog circuit model.
Three-dimensional electric field module 404 is used to obtain in the three-dimensional electric field mode input electromagnetic field simulation software predetermined
It is struck by lightning under energy, the magnetic distribution in three-dimensional electric field model；In one embodiment, by the three-dimensional electric field mode input electricity
In magnetic field simulation software, obtain under predetermined lightning stroke energy, the magnetic distribution in three-dimensional electric field model includes: according to target area
The history lightning stroke data in domain determine predetermined lightning stroke energy；By in the three-dimensional electric field mode input electromagnetic field simulation software, by institute
Predetermined lightning stroke energy is stated as emulation trigger source and carries out electromagnetic-field simulation calculating；And in the three-dimensional electric field after calculating
Acquisition surface magnetic distribution in model.
Conversion module 406 is used to convert transient pulse waveform for the magnetic distribution；
Two-dimensional circuit module 408 is used for by the two-dimensional circuit mode input circuit simulating software, by the transient state arteries and veins
Waveform is rushed as energy source, obtains circuit response message；In one embodiment, the two-dimensional circuit mode input circuit is imitated
In true software, using the transient pulse waveform as equivalent current source, carries out emulation and obtain circuit response message.
In one embodiment, by the two-dimensional circuit mode input circuit simulating software, by the transient pulse wave
Shape carries out emulation and obtains circuit response message as equivalent voltage source.
Risk evaluation module 410 is used to comment target area progress thunderbolt risk by the circuit response message
Estimate.The lightning stroke weak spot in the target area can be determined by the circuit response message.It can also be responded by the circuit
Information determines the probability of single-phase earthing and phase fault in the target area.
According to the Lightning Strike Risk Evaluation device based on cascade emulation of the disclosure, by cascade mode, respectively from electromagnetism
Field, which is combined with the angle of circuit, carries out simulation analysis to lightning-strike effectiveness, and is being assessed by emulating data thunderbolt risk
Mode can analyze lightning stroke from multiple angles, improve distribution network reliability.
Fig. 5 is the block diagram of a kind of electronic equipment shown according to an exemplary embodiment.
The electronic equipment 200 of this embodiment according to the disclosure is described referring to Fig. 5.The electronics that Fig. 5 is shown
Equipment 200 is only an example, should not function to the embodiment of the present disclosure and use scope bring any restrictions.
As shown in figure 5, electronic equipment 200 is showed in the form of universal computing device.The component of electronic equipment 200 can wrap
It includes but is not limited to: at least one processing unit 210, at least one storage unit 220, (including the storage of the different system components of connection
Unit 220 and processing unit 210) bus 230, display unit 240 etc..
Wherein, the storage unit is stored with program code, and said program code can be held by the processing unit 210
Row, so that the processing unit 210 executes described in this specification above-mentioned electronic prescription circulation processing method part according to this
The step of disclosing various illustrative embodiments.For example, the processing unit 210 can execute step as shown in Figure 2.
The storage unit 220 may include the readable medium of volatile memory cell form, such as random access memory
Unit (RAM) 2201 and/or cache memory unit 2202 can further include read-only memory unit (ROM) 2203.
The storage unit 220 can also include program/practical work with one group of (at least one) program module 2205
Tool 2204, such program module 2205 includes but is not limited to: operating system, one or more application program, other programs
It may include the realization of network environment in module and program data, each of these examples or certain combination.
Bus 230 can be to indicate one of a few class bus structures or a variety of, including storage unit bus or storage
Cell controller, peripheral bus, graphics acceleration port, processing unit use any bus structures in a variety of bus structures
Local bus.
Electronic equipment 200 can also be with one or more external equipments 300 (such as keyboard, sensing equipment, bluetooth equipment
Deng) communication, can also be enabled a user to one or more equipment interact with the electronic equipment 200 communicate, and/or with make
Any equipment (such as the router, modulation /demodulation that the electronic equipment 200 can be communicated with one or more of the other calculating equipment
Device etc.) communication.This communication can be carried out by input/output (I/O) interface 250.Also, electronic equipment 200 can be with
By network adapter 260 and one or more network (such as local area network (LAN), wide area network (WAN) and/or public network,
Such as internet) communication.Network adapter 260 can be communicated by bus 230 with other modules of electronic equipment 200.It should
Understand, although not shown in the drawings, other hardware and/or software module can be used in conjunction with electronic equipment 200, including but unlimited
In: microcode, device driver, redundant processing unit, external disk drive array, RAID system, tape drive and number
According to backup storage system etc..
Through the above description of the embodiments, those skilled in the art is it can be readily appreciated that example described herein is implemented
Mode can also be realized by software realization in such a way that software is in conjunction with necessary hardware.Therefore, according to the disclosure
The technical solution of embodiment can be embodied in the form of software products, which can store non-volatile at one
Property storage medium (can be CD-ROM, USB flash disk, mobile hard disk etc.) in or network on, including some instructions are so that a calculating
Equipment (can be personal computer, server or network equipment etc.) executes the above method according to disclosure embodiment.
Fig. 6 schematically shows a kind of computer readable storage medium schematic diagram in disclosure exemplary embodiment.
Refering to what is shown in Fig. 6, describing the program product for realizing the above method according to embodiment of the present disclosure
400, can using portable compact disc read only memory (CD-ROM) and including program code, and can in terminal device,
Such as it is run on PC.However, the program product of the disclosure is without being limited thereto, in this document, readable storage medium storing program for executing can be with
To be any include or the tangible medium of storage program, the program can be commanded execution system, device or device use or
It is in connection.
Described program product can be using any combination of one or more readable mediums.Readable medium can be readable letter
Number medium or readable storage medium storing program for executing.Readable storage medium storing program for executing for example can be but be not limited to electricity, magnetic, optical, electromagnetic, infrared ray or
System, device or the device of semiconductor, or any above combination.The more specific example of readable storage medium storing program for executing is (non exhaustive
List) include: electrical connection with one or more conducting wires, portable disc, hard disk, random access memory (RAM), read-only
Memory (ROM), erasable programmable read only memory (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.
The computer readable storage medium may include in a base band or the data as the propagation of carrier wave a part are believed
Number, wherein carrying readable program code.The data-signal of this propagation can take various forms, including but not limited to electromagnetism
Signal, optical signal or above-mentioned any appropriate combination.Readable storage medium storing program for executing can also be any other than readable storage medium storing program for executing
Readable medium, the readable medium can send, propagate or transmit for by instruction execution system, device or device use or
Person's program in connection.The program code for including on readable storage medium storing program for executing can transmit with any suitable medium, packet
Include but be not limited to wireless, wired, optical cable, RF etc. or above-mentioned any appropriate combination.
Can with any combination of one or more programming languages come write for execute the disclosure operation program
Code, described program design language include object oriented program language-Java, C++ etc., further include conventional
Procedural programming language-such as " C " language or similar programming language.Program code can be fully in user
It calculates and executes in equipment, partly executes on a user device, being executed as an independent software package, partially in user's calculating
Upper side point is executed on a remote computing or is executed in remote computing device or server completely.It is being related to far
Journey calculates in the situation of equipment, and remote computing device can pass through the network of any kind, including local area network (LAN) or wide area network
(WAN), it is connected to user calculating equipment, or, it may be connected to external computing device (such as utilize ISP
To be connected by internet).
Above-mentioned computer-readable medium carries one or more program, when said one or multiple programs are by one
When the equipment executes, so that the computer-readable medium implements function such as: constructing the three-dimensional electric field model and two of target area
Tie up circuit model；It in the three-dimensional electric field mode input electromagnetic field simulation software, will obtain under predetermined lightning stroke energy, three-dimensional electricity
Magnetic distribution in field model；Transient pulse waveform is converted by the magnetic distribution；The two-dimensional circuit model is defeated
Enter in circuit simulating software, using the transient pulse waveform as energy source, obtains circuit response message；And pass through the electricity
Road response message carries out Lightning Strike Risk Evaluation to the target area.
It will be appreciated by those skilled in the art that above-mentioned each module can be distributed in device according to the description of embodiment, it can also
Uniquely it is different from one or more devices of the present embodiment with carrying out corresponding change.The module of above-described embodiment can be merged into
One module, can also be further split into multiple submodule.
By the description of above embodiment, those skilled in the art is it can be readily appreciated that example embodiment described herein
It can also be realized in such a way that software is in conjunction with necessary hardware by software realization.Therefore, implemented according to the disclosure
The technical solution of example can be embodied in the form of software products, which can store in a non-volatile memories
In medium (can be CD-ROM, USB flash disk, mobile hard disk etc.) or on network, including some instructions are so that a calculating equipment (can
To be personal computer, server, mobile terminal or network equipment etc.) it executes according to the method for the embodiment of the present disclosure.
Claims (10)
1. a kind of Lightning Strike Risk Evaluation method based on cascade emulation characterized by comprising
Construct the three-dimensional electric field model and two-dimensional circuit model of target area；
It in the three-dimensional electric field mode input electromagnetic field simulation software, will obtain under predetermined lightning stroke energy, three-dimensional electric field model
In magnetic distribution；
Transient pulse waveform is converted by the magnetic distribution；
By in the two-dimensional circuit mode input circuit simulating software, using the transient pulse waveform as energy source, electricity is obtained
Road response message；And
Lightning Strike Risk Evaluation is carried out to the target area by the circuit response message.
2. the method as described in claim 1, which is characterized in that construct the three-dimensional electric field model and two-dimensional circuit mould of target area
Type includes:
The three-dimensional electric field model of the target area is constructed by automatic computing engine Autocad；With or
The two-dimensional circuit model of the target area, the two-dimensional circuit model are constructed by electric design automation design software
For analog circuit model.
3. the method as described in claim 1, which is characterized in that by the three-dimensional electric field mode input electromagnetic field simulation software
In, it obtains under predetermined lightning stroke energy, the magnetic distribution in three-dimensional electric field model includes:
Being struck by lightning according to the history of target area, data are determining to make a reservation for lightning stroke energy；
By in the three-dimensional electric field mode input electromagnetic field simulation software, using the predetermined lightning stroke energy as emulation trigger source into
Row electromagnetic-field simulation calculates；And
Acquisition surface magnetic distribution after calculating in the three-dimensional electric field model.
4. method as claimed in claim 3, which is characterized in that the electromagnetic field simulation software includes:
CST, HFSS and FEKO.
5. the method as described in claim 1, which is characterized in that convert transient pulse waveform packet for the magnetic distribution
It includes:
Transient pulse waveform is converted by the magnetic distribution by way of extracting equivalent circuit.
6. the method as described in claim 1, which is characterized in that by the two-dimensional circuit mode input circuit simulating software,
Using the transient pulse waveform as energy source, obtaining circuit response message includes:
By in the two-dimensional circuit mode input circuit simulating software, using the transient pulse waveform as equivalent current source, into
Row emulation obtains circuit response message；With or
By in the two-dimensional circuit mode input circuit simulating software, using the transient pulse waveform as equivalent voltage source, into
Row emulation obtains circuit response message.
7. method as claimed in claim 6, which is characterized in that the circuit simulating software includes:
Cadence, Matlab and Pspice.
8. the method as described in claim 1, which is characterized in that carried out by the circuit response message to the target area
Lightning Strike Risk Evaluation includes:
The lightning stroke weak spot in the target area is determined by the circuit response message.
9. the method as described in claim 1, which is characterized in that carried out by the circuit response message to the target area
Lightning Strike Risk Evaluation includes:
The probability of the single-phase earthing and phase fault in the target area is determined by the circuit response message.
10. a kind of Lightning Strike Risk Evaluation device based on cascade emulation characterized by comprising
Model module, for constructing the three-dimensional electric field model and two-dimensional circuit model of target area；
Three-dimensional electric field module, in the three-dimensional electric field mode input electromagnetic field simulation software, will obtain in predetermined lightning stroke energy
Magnetic distribution under amount, in three-dimensional electric field model；
Conversion module, for converting transient pulse waveform for the magnetic distribution；
Two-dimensional circuit module, for by the two-dimensional circuit mode input circuit simulating software, by the transient pulse waveform
As energy source, circuit response message is obtained；And
Risk evaluation module, for carrying out Lightning Strike Risk Evaluation to the target area by the circuit response message.
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| CN110516397A (en) * | 2019-09-02 | 2019-11-29 | 南华大学 | A kind of emulation mode and system of thunder and lightning electromagnetic environment |
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