CN109388867A - A kind of appraisal procedure and device of HVDC converter substation electromagnetic interference - Google Patents
A kind of appraisal procedure and device of HVDC converter substation electromagnetic interference Download PDFInfo
- Publication number
- CN109388867A CN109388867A CN201811114007.0A CN201811114007A CN109388867A CN 109388867 A CN109388867 A CN 109388867A CN 201811114007 A CN201811114007 A CN 201811114007A CN 109388867 A CN109388867 A CN 109388867A
- Authority
- CN
- China
- Prior art keywords
- radiation
- dipole
- electric field
- considering
- soil
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Computer Hardware Design (AREA)
- Evolutionary Computation (AREA)
- Geometry (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses the appraisal procedures and device of a kind of HVDC converter substation electromagnetic interference, comprising: is configured according to soil conductivity parameter to preset model, obtains the dipole radiation computation model for considering the earth factor；Wherein, the soil conductivity parameter is soil region conductivity and soil region dielectric constant；Simulation calculation is carried out to electromagnetic radiation attenuation characteristic using the dipole radiation computation model for considering the earth factor, determine radio interference limit value and its corresponding protective range, using the dipole radiation computation model for considering the earth factor, it can effectively solve in the prior art since free space dipole model does not consider the problems of that influence of the earth to attenuation causes error on electromagnetic interference and its protective range to calculating, the influence of converter station electromagnetic interference can be effectively reduced, and a kind of effective method is provided to study the calculating of electromagnetic radiation attenuation characteristic.
Description
Technical field
The present invention relates to commenting for technical field of direct current power transmission more particularly to a kind of HVDC converter substation electromagnetic interference
Estimate method and apparatus.
Background technique
As the development and flexible control ability, HVDC Transmission Technology of device for high-power power electronic are widely used in
Remote large capacity power transmission and new energy access.Due to the quick-speed turning on-off characteristic of thyristor device, HVDC converter substation electromagnetism
Radiation characteristic and limit value require more previous ac transmission to have apparent difference.
DC converter station frequency of electromagnetic radiation range is wider compared with AC Substation.The electricity of ac high-voltage electric power equipment or facility
Magnetic radiation interference mostlys come from corona.The prior art more completely covers the research of this aspect, and especially IEC electromagnetism is simultaneous
18 series standard of CISPR of appearance committee publication.The limit value for proposing substation's peripheral electromagnetic field of the series standard system is wanted
It asks and process of measurement is used as using 0.5MHz and is referred to according to alternating current equipment or the spectral characteristic of line corona generation electromagnetic radiation
Frequency is to measure radio interference level.For high-voltage convertor station, due to the on state characteristic of power current inverter, with single-frequency
Point to radio interference carry out assessment be it is inadequate, need to may impacted entire frequency range (usually 0.15MHz~
30MHz) it is scanned.
The range attenuation characteristic of electromagnetic radiation is to determine the important prerequisite of radiation limit value and protection scope.Electromagnetic interference limit value
Generally it is made of specific limit value and measurement apart from two parts.Limit of interference at radio receiver position is explicitly defined
When, according to the specific limit value at measurement position, protection distance is determined with the variation relation of distance by electromagnetic radiation, protection away from
The interference level that may be subject to from the radio receiver at place need to meet receiver requirement allowable.Therefore, different type is radiated
The range attenuation characteristic for the electromagnetic radiation that source generates, which carries out research, to have great importance.Currently, generalling use two kinds simply
Model prediction electromagnetic radiation attenuation characteristic: dual-beam model (two-beam model) and free space dipole model.
Wherein, dual-beam model is based on point source far-field radiation feature, will greatly be considered as mirror reflection plane, several by optics
What method calculates the radiant power of location of interest.The disadvantages of this method is that only accounting for the variation of the fixed space position quantity of electric charge produces
Raw electromagnetic radiation has ignored the influence of the mobile i.e. electric current of charge space.
Free space dipole model, which is based on any radiation source in reality, all can mathematically be abstracted as finite quantity dipole
Spatial distribution combine this premise.The shortcomings that free space dipole model, is not consider the earth to the shadow of attenuation
It rings, causes to generate error on electromagnetic interference and its protective range.
Summary of the invention
The embodiment of the present invention provides the appraisal procedure and device of a kind of HVDC converter substation electromagnetic interference, can be effective
It solves in the prior art since free space dipole model does not consider influence of the earth to attenuation to electromagnetic interference
And its problem of error is caused on protective range, the influence of converter station electromagnetic interference can be effectively reduced.
One embodiment of the invention provides a kind of appraisal procedure of HVDC converter substation electromagnetic interference, comprising:
Preset model is configured according to soil conductivity parameter, obtains considering that the dipole radiation of the earth factor calculates
Model；Wherein, the soil conductivity parameter is soil region conductivity and soil region dielectric constant；
Emulation meter is carried out to electromagnetic radiation attenuation characteristic using the dipole radiation computation model for considering the earth factor
It calculates, determines radio interference limit value and its corresponding protective range.
As an improvement of the above scheme, described that preset model is configured according to soil conductivity parameter, considered
The dipole radiation computation model of the earth factor, specifically:
Obtain considering the dipole radiation computation model of the earth factor according to the following formula:
Wherein, E (R) is electric field strength of the electric dipole in radiated electric field, and Idl is electric dipole, and ω is angular frequency, λ
For wavelength, Ne0λFor longitudinal polarization Vector eigen function, ε 0 is air section dielectric constant, u0For area of space magnetic conductivity, ε is
The soil region conductivity, σ are the soil region dielectric constant, and Z0 is electric dipole radiation height；
As an improvement of the above scheme, the dipole radiation computation model using the consideration the earth factor is to electromagnetism
Radiation attenuation characteristics carry out simulation calculation, determine radio interference limit value and its corresponding protective range, comprising:
Several preset levels distance and several predeterminated frequencies are inputted into the dipole radiation for considering the earth factor
Computation model carries out simulation calculation, obtains under different frequency radiation field intensity with horizontal distance change curve；Wherein, it is described it is horizontal away from
In for radiated electric field with a distance from preset observation point to radiation source；
According to radiation field intensity under the different frequency with horizontal distance change curve, two under the frequency of will acquire one
The corresponding radiation field intensity of horizontal distance carries out difference calculating, obtains the first intensity of radiation electric field attenuation amplitude；
The first intensity of radiation electric field attenuation amplitude and electromagnetic interference standard limit are subjected to difference calculating, obtain first
Radio interference limit value and its corresponding protective range.
As an improvement of the above scheme, the method also includes:
According to radiation field intensity under the different frequency with horizontal distance change curve, under the horizontal distance of will acquire one
The corresponding radiation field intensity of two frequencies carries out difference calculating, obtains the second intensity of radiation electric field attenuation amplitude；
The second intensity of radiation electric field attenuation amplitude and electromagnetic interference standard limit are subjected to difference calculating, obtain second
Radio interference limit value and its corresponding protective range.
Another embodiment of the present invention correspondence provides a kind of assessment device of HVDC converter substation electromagnetic interference, wraps
It includes:
Model construction module, for being configured according to soil conductivity parameter to preset model, obtain considering the earth because
The dipole radiation computation model of element；Wherein, the soil conductivity parameter is that soil region conductivity and soil region dielectric are normal
Number；
Simulation Calculation, for being declined using the dipole radiation computation model for considering the earth factor to electromagnetic radiation
Subtract characteristic and carry out simulation calculation, determines radio interference limit value and its corresponding protective range.
As an improvement of the above scheme, the model construction module sets preset model according to soil conductivity parameter
It sets, obtains the dipole radiation computation model for considering the earth factor；Wherein, the soil conductivity parameter is soil region conductivity
With soil region dielectric constant, specifically include:
Obtain considering the dipole radiation computation model of the earth factor according to the following formula:
Wherein, E (R) is electric field strength of the electric dipole in radiated electric field, and Idl is electric dipole, and ω is angular frequency, λ
For wavelength, Ne0λFor longitudinal polarization Vector eigen function, ε0For air section dielectric constant, u0For area of space magnetic conductivity, ε is institute
Soil region conductivity is stated, σ is the soil region dielectric constant, Z0For electric dipole radiation height；
As an improvement of the above scheme, the Simulation Calculation is using the dipole radiation meter for considering the earth factor
It calculates model and simulation calculation is carried out to electromagnetic radiation attenuation characteristic, determine radio interference limit value and its corresponding protective range, wrap
It includes:
Several preset levels distance and several predeterminated frequencies are inputted into the dipole radiation for considering the earth factor
Computation model carries out simulation calculation, obtains under different frequency radiation field intensity with horizontal distance change curve；Wherein, it is described it is horizontal away from
In for radiated electric field with a distance from preset observation point to radiation source；
According to radiation field intensity under the different frequency with horizontal distance change curve, two under the frequency of will acquire one
The corresponding radiation field intensity of horizontal distance carries out difference calculating, obtains the first intensity of radiation electric field attenuation amplitude；
The first intensity of radiation electric field attenuation amplitude and electromagnetic interference standard limit are subjected to difference calculating, obtain first
Radio interference limit value and its corresponding protective range.
As an improvement of the above scheme, the Simulation Calculation further include:
According to radiation field intensity under the different frequency with horizontal distance change curve, under the horizontal distance of will acquire one
The corresponding radiation field intensity of two frequencies carries out difference calculating, obtains the second intensity of radiation electric field attenuation amplitude；
The second intensity of radiation electric field attenuation amplitude and electromagnetic interference standard limit are subjected to difference calculating, obtain second
Radio interference limit value and its corresponding protective range.
Another embodiment of the present invention provides a kind of assessment devices of HVDC converter substation electromagnetic interference, including place
It manages device, memory and storage in the memory and is configured as the computer program executed by the processor, it is described
Processor realizes HVDC converter substation electromagnetic interference described in foregoing invention embodiment when executing the computer program
Appraisal procedure.
Another embodiment of the present invention provides a kind of storage medium, the computer readable storage medium includes the meter of storage
Calculation machine program, wherein control equipment where the computer readable storage medium in computer program operation and execute
State the appraisal procedure of HVDC converter substation electromagnetic interference described in inventive embodiments.
Compared with prior art, the embodiment of the present invention discloses a kind of assessment side of HVDC converter substation electromagnetic interference
Method and device are configured preset model according to soil conductivity parameter, obtain the dipole radiation meter for considering the earth factor
Calculate model, wherein the soil conductivity parameter is soil region conductivity and soil region dielectric constant, is considered greatly using described
The dipole radiation computation model of ground factor to electromagnetic radiation attenuation characteristic carry out simulation calculation, determine radio interference limit value and
Its corresponding protective range, using consider the earth factor dipole radiation computation model, can effectively solve in the prior art by
Do not consider influence of the earth to attenuation to reckoning electromagnetic interference and its protective range in free space dipole model
On the problem of causing error, the influence of converter station electromagnetic interference can be effectively reduced, and special for research electromagnetic radiation decaying
The calculating of property provides a kind of effective method.
Detailed description of the invention
Fig. 1 is a kind of stream of the appraisal procedure for HVDC converter substation electromagnetic interference that one embodiment of the invention provides
Journey schematic diagram；
Fig. 2 is the dipole radiation computation model schematic diagram of the considerations of one embodiment of the invention provides the earth factor；
Radiation field intensity becomes with horizontal distance under the different frequency of the considerations of Fig. 3 is one embodiment of the invention offer the earth factor
Change curve graph；
Fig. 4 is that the earth that one embodiment of the invention provides is radiation field intensity under the different frequency of perfact conductor situation with level
Distance change curve graph；
Fig. 5 be one embodiment of the invention provide different frequency under dipole radiation height to electromagnetic radiation attenuation characteristic
Influence curve figure；
Fig. 6 is radio interference limit graph figure of the different level of one embodiment of the invention offer under；
Fig. 7 is a kind of knot of the assessment device for HVDC converter substation electromagnetic interference that one embodiment of the invention provides
Structure schematic diagram.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
It is a kind of assessment side for HVDC converter substation electromagnetic interference that one embodiment of the invention provides referring to Fig. 1
The flow diagram of method, comprising:
S11, preset model is configured according to soil conductivity parameter, obtains the dipole radiation for considering the earth factor
Computation model；Wherein, the soil conductivity parameter is soil region conductivity and soil region dielectric constant.
Preferably, the present embodiment uses FEKO electromagnetic field simulation software, establishes the dipole influenced comprising horizontal the earth
Computation model is radiated, simulation calculation has been carried out to the terrestrial surface radiation electromagnetic field in 10Hz-600MHz frequency range.
It referring to fig. 2, is the dipole radiation computation model schematic diagram of the considerations of one embodiment of the invention provides the earth factor,
Include: ρ axis top half region (i.e. 0 region z >) be air section；ρ axis lower half portion region (i.e. 0 region z <) is soil
Region；Plane (i.e. z=0) where ρ axis is air section and soil region interface, and P is observation point position in air section,
Corresponding position vector is R, and the horizontal distance apart from radiation source is D.
Preferably, step S11 specifically:
Obtain considering the dipole radiation computation model of the earth factor according to the following formula:
Wherein, E (R) is electric field strength of the electric dipole in radiated electric field, and Idl is electric dipole, and ω is angular frequency, λ
For wavelength, Ne0λFor longitudinal polarization Vector eigen function, ε0For air section dielectric constant, u0For area of space magnetic conductivity, ε is institute
Soil region conductivity is stated, σ is the soil region dielectric constant, Z0For electric dipole radiation height；
For example, the soil conductivity parameter value ε=15, σ=0.01S/m.
S12, electromagnetic radiation attenuation characteristic is imitated using the dipole radiation computation model for considering the earth factor
It is true to calculate, determine radio interference limit value and its corresponding protective range.
Preferably, several preset levels distance and several predeterminated frequencies are inputted into the dipole for considering the earth factor
Son radiation computation model carries out simulation calculation, obtains under different frequency radiation field intensity with horizontal distance change curve.
Wherein, the horizontal distance be radiated electric field in preset observation point P to radiation source distance.
Referring to Fig. 3, be the considerations of one embodiment of the invention provides the earth factor different frequency under radiation field intensity with level
Distance change curve graph, including using horizontal distance D as x-axis, intensity of radiation electric field E is y-axis, the radiation electric field strength under different frequency
Spend change curve；Wherein, which includes 10Hz, 100kHz, 1.2MHz, 30MHz, 100MHz, 600MHz.
Preferably, under the different frequency radiation field intensity with horizontal distance change curve radiated electric field height Z0=
1m, the soil conductivity parameter are ε=15, σ=0.01S/m.
In an alternative embodiment, see Fig. 3, song is changed with horizontal distance according to radiation field intensity under the different frequency
Line, the corresponding radiation field intensity of two different horizontal distances carries out difference calculating under the frequency of will acquire one, obtains first
Intensity of radiation electric field attenuation amplitude；
The first intensity of radiation electric field attenuation amplitude and electromagnetic interference standard limit are subjected to difference calculating, obtain first
Radio interference limit value and its corresponding protective range.
In an alternative embodiment, see Fig. 3, song is changed with horizontal distance according to radiation field intensity under the different frequency
Line, the corresponding radiation field intensity of two different frequencies carries out difference calculating under the horizontal distance of will acquire one, obtains second
Intensity of radiation electric field attenuation amplitude；
The second intensity of radiation electric field attenuation amplitude and electromagnetic interference standard limit are subjected to difference calculating, obtain second
Radio interference limit value and its corresponding protective range.
In another preferred embodiment, on the basis of the above embodiments, electric dipole radiation height Z0Value is in 1m-
In the range of 20m, electromagnetic radiation attenuation characteristic of frequency value in the range of 10Hz-600MHz.
Referring to fig. 4, be one embodiment of the invention provide the earth be perfact conductor situation different frequency under radiation field intensity
With horizontal distance change curve, including using horizontal distance D as x-axis, intensity of radiation electric field E is y-axis, electric dipole radiation height
Z0=1m, horizontal distance D value in the range of 1m-20m simulated radiation electric field strength with horizontal distance attenuation curve.
It is understood that, in near-field region, radiated electric field decaying is very fast when with perfact conductor plane simulation the earth；
In far-field region, radiated electric field decaying is slower, decays substantially by 1/D rule.For 100kHz, 1.2MHz, 0/2 π of λ is corresponding horizontal
Distance about 480m and 40m；For 10Hz, near field range calculated value is 477km, more than 10km；When frequency is more than 10MHz,
Near-field region corresponds to horizontal distance no more than 5m.
It is understood that very fast in the decaying of near-field region radiated electric field, the high-order term of 1/D plays a major role；In far field
Area radiation electric field is decayed by 1/D rule.
Wherein, as D > λ0When/2 π, observation point is in far field region, as D < λ0When/2 π, observation point is in near-field region；
λ0For free space wavelength.
Further, comparison diagram 3 and Fig. 4, for 10Hz, 100kHz, 1.2MHz, typical soil parameter and perfact conductor are flat
Face calculated result is similar, trend having the same；For 30MHz, 100MHz, 600MHz, response curve is between in 1/D in Fig. 3
And 1/D2Between, decay faster in the case of more satisfactory conductor the earth.Therefore, soil parameters has obvious shadow to radiated electric field decaying
It rings, when especially frequency is higher.
It is understood that soil parameters has a certain impact to the attenuation characteristic of ground field strength, especially frequency compared with
Gao Shi.Dipole source terrain clearance is affected in distribution character of the near-field region to radiated electric field, in far-field region, declines
It is insensitive to the variation of radiation source terrain clearance to subtract trend.
Preferably, according to practical terrestrial soil characteristic, the earth canonical parameter value is ε=15, σ in Research in electromagnetic radiation
=0.01S/m.
In an alternative embodiment, according to above-mentioned the earth canonical parameter, electric dipole radiation height Z0Value difference
When for 1m, 3m, 5m, 8m, 15m, 20m, declined using the dipole radiation computation model for considering the earth factor to electromagnetic radiation
Subtract characteristic and carry out simulation calculation, obtains influence of the dipole radiation source height to electromagnetic radiation attenuation characteristic.
It is that dipole radiation height decays to electromagnetic radiation under the different frequency that one embodiment of the invention provides referring to Fig. 5
The influence curve figure of characteristic, using horizontal distance D as x-axis, intensity of radiation electric field E be y-axis, simulated radiation electric field strength with level away from
From attenuation curve, including Fig. 5 (a) be under 100kHz dipole radiation height to the influence curve of electromagnetic radiation attenuation characteristic
Figure, Fig. 5 (b) are that dipole radiation height is 30MHz to influence curve figure, Fig. 5 (c) of electromagnetic radiation attenuation characteristic under 1.2MHz
Lower dipole radiation height is dipole radiation height under 100MHz to influence curve figure, Fig. 5 (d) of electromagnetic radiation attenuation characteristic
To the influence curve figure of electromagnetic radiation attenuation characteristic；Wherein, electric dipole radiation height Z0Value be respectively 1m, 3m, 5m, 8m,
15m、20m。
As shown in Figure 5, near field range, dipole source terrain clearance is bigger to being distributed with for radiated electric field
It influences, frequency is lower, influences to be more obvious；In far-field range, radiated electric field attenuation trend is insensitive to radiation source height.Work as frequency
Lower than 100MHz, horizontal distance is greater than within the scope of 100m, and radiation source height changes in 1m-20m influences very little to field decay.
In an alternative embodiment, step S12 specifically:
It is radio interference limit graph figure of the different level of one embodiment of the invention offer under, packet referring to Fig. 6
Include dipole radiation height Z0=1m, ε=15, σ=0.01S/m, and using frequency as x-axis, it is y with radio interference field strength limit value
Axis is emulated.
Preferably, such as Fig. 6, by taking 1.2MHz frequency as an example.According to Fig. 3, the curve for 1.2MHz is in horizontal distance D
Intensity of radiation electric field at 450m and 1000m is respectively -102.0dB and -108.9dB, carries out difference calculating, obtains radiated electric field
Strength retrogression's amplitude is (- 102.0dB)-(- 108.9dB)=6.9dB.
Preferably, domestic extra-high voltage and high voltage DC engineering mainly control electromagnetic interference limit value according to DL/T 275, i.e.,
Radio interference level in all frequencies within 0.5MHz-20MHz at converter station 450m is no more than 40dB μ V/m.It is right
Fair in recipient position uses limit of interference, and without unified international standard within the scope of 150kHz-30MHz, GIGRE exists
After comprehensive requirement all over the world, gives the fair of the radio receiver of the frequency range and use limit of interference curve.
Further, limit of interference is 40dB μ V/m (see in Fig. 6 under 1.2MHz frequency at 450m in DL/T 275
point01).The attenuation amplitude that limit of interference at 450m subtracts 6.9dB be can be obtained into corresponding radio interference limit at 1000m
Value 40dB μ V/m-6.9dB=33.1dB μ V/m (see point02 in Fig. 6).
Wherein, see that dotted line is GIGRE receiver limit value in Fig. 6.
When carrying out limit value requirement to interference source and receiver according to DL/T 275 and GIGRE respectively, radio interference protection
Range is being greater than at 1.7km, i.e., the radio interference that the radio receiver apart from interference source horizontal distance 1.7km or more is subject to
No more than GIGRE recommendation.
Preferably, within 0.5MHz-20MHz all frequencies and different distance repeat the process, can be obtained not
Radio interference limit value under same distance, and then determine radio interference protective range.
It is a kind of assessment dress for HVDC converter substation electromagnetic interference that one embodiment of the invention provides referring to Fig. 7
The structural schematic diagram set, comprising:
Model construction module 1, for being configured according to soil conductivity parameter to preset model, obtain considering the earth because
The dipole radiation computation model of element；Wherein, the soil conductivity parameter is that soil region conductivity and soil region dielectric are normal
Number；
Simulation Calculation 2, for the dipole radiation computation model using the consideration the earth factor to electromagnetic radiation
Attenuation characteristic carries out simulation calculation, determines radio interference limit value and its corresponding protective range.
In an alternative embodiment, the model construction module 1 includes:
Modeling unit, for obtaining considering the dipole radiation computation model of the earth factor according to the following formula:
Wherein, E (R) is electric field strength of the electric dipole in radiated electric field, and Idl is electric dipole, and ω is angular frequency, λ
For wavelength, Ne0λFor longitudinal polarization Vector eigen function, ε0For air section dielectric constant, u0For area of space magnetic conductivity, ε is institute
Soil region conductivity is stated, σ is the soil region dielectric constant, Z0For electric dipole radiation height；
In an alternative embodiment, the model construction module 2 includes:
Electromagnetic radiation attenuation characteristic computing unit, for inputting several preset levels distance and several predeterminated frequencies
The dipole radiation computation model for considering the earth factor carries out simulation calculation, obtains under different frequency radiation field intensity with level
Distance change curve；Wherein, the horizontal distance be radiated electric field in preset observation point to radiation source distance；
First intensity of radiation electric field attenuation amplitude computing unit is used for according to radiation field intensity under the different frequency with level
Distance change curve, the corresponding radiation field intensity of two horizontal distances carries out difference calculating under the frequency of will acquire one, obtains
First intensity of radiation electric field attenuation amplitude；
First radio interference limit value computing unit, for doing the first intensity of radiation electric field attenuation amplitude with electromagnetism
It disturbs standard limit and carries out difference calculating, obtain the first radio interference limit value and its corresponding protective range.
In an alternative embodiment, the model construction module 2 further include:
Second intensity of radiation electric field attenuation amplitude computing unit is used for according to radiation field intensity under the different frequency with level
Distance change curve, the corresponding radiation field intensity of two frequencies carries out difference calculating under the horizontal distance of will acquire one, obtains
Second intensity of radiation electric field attenuation amplitude；
Second radio interference limit value computing unit, for doing the second intensity of radiation electric field attenuation amplitude with electromagnetism
It disturbs standard limit and carries out difference calculating, obtain the second radio interference limit value and its corresponding protective range.
Another embodiment of the present invention provides a kind of assessment devices of HVDC converter substation electromagnetic interference, including place
It manages device, memory and storage in the memory and is configured as the computer program by running on the processor, institute
State HVDC converter substation electromagnetic interference described in realizing any of the above one when processor runs the computer program
Appraisal procedure.
Another embodiment of the present invention provides a kind of computer readable storage medium, the computer readable storage medium packet
Include the computer program of storage, wherein where controlling the computer readable storage medium in computer program operation
The appraisal procedure of HVDC converter substation electromagnetic interference described in equipment execution any of the above one.
Alleged processor can be central processing unit (Central Processing Unit, CPU), can also be it
His general processor, digital signal processor (Digital Signal Processor, DSP), specific integrated circuit
(Application Specific Integrated Circuit, ASIC), ready-made programmable gate array (Field-
Programmable Gate Array, FPGA) either other programmable logic device, discrete gate or transistor logic,
Discrete hardware components etc..General processor can be microprocessor or the processor is also possible to any conventional processor
It is the control centre of the assessment device of the HVDC converter substation electromagnetic interference Deng, the processor, is connect using various
The various pieces of mouth and the assessment device of the entire HVDC converter substation electromagnetic interference of connection.
The memory can be used for storing the computer program and/or module, and the processor is by operation or executes
Computer program in the memory and/or module are stored, and calls the data being stored in memory, described in realization
The various functions of the assessment device of HVDC converter substation electromagnetic interference.The memory can mainly include storing program area
The storage data area and, wherein storing program area can (such as the sound of application program needed for storage program area, at least one function
Sound playing function, image player function etc.) etc.；Storage data area can store according to mobile phone use created data (such as
Audio data, phone directory etc.) etc..In addition, memory may include high-speed random access memory, it can also include non-volatile
Memory, such as hard disk, memory, plug-in type hard disk, intelligent memory card (Smart Media Card, SMC), secure digital
(Secure Digital, SD) card, flash card (Flash Card), at least one disk memory, flush memory device or other
Volatile solid-state part.
Wherein, if the HVDC converter substation electromagnetic interference assesses the integrated module/unit of device with soft
The form of part functional unit realizes and when sold or used as an independent product, can store and computer-readable deposits at one
In storage media.Based on this understanding, the present invention realizes all or part of the process in above-described embodiment method, can also pass through
Computer program is completed to instruct relevant hardware, and the computer program can be stored in a computer readable storage medium
In, the computer program is when being executed by processor, it can be achieved that the step of above-mentioned each embodiment of the method.Wherein, the calculating
Machine program includes computer program code, and the computer program code can be source code form, object identification code form, can hold
Style of writing part or certain intermediate forms etc..The computer-readable medium may include: that can carry the computer program code
Any entity or device, recording medium, USB flash disk, mobile hard disk, magnetic disk, CD, computer storage, read-only memory (ROM,
Read-Only Memory), random access memory (RAM, Random Access Memory), electric carrier signal, telecommunications letter
Number and software distribution medium etc..It should be noted that the content that the computer-readable medium includes can be managed according to the administration of justice
Local legislation and the requirement of patent practice carry out increase and decrease appropriate, such as in certain jurisdictions, according to legislation and patent
Practice, computer-readable medium does not include electric carrier signal and telecommunication signal.
It should be noted that the apparatus embodiments described above are merely exemplary, wherein described be used as separation unit
The unit of explanation may or may not be physically separated, and component shown as a unit can be or can also be with
It is not physical unit, it can it is in one place, or may be distributed over multiple network units.It can be according to actual
It needs that some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.In addition, device provided by the invention
In embodiment attached drawing, the connection relationship between module indicate between them have communication connection, specifically can be implemented as one or
A plurality of communication bus or signal wire.Those of ordinary skill in the art are without creative efforts, it can understand
And implement.
The above is a preferred embodiment of the present invention, it is noted that for those skilled in the art
For, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (10)
1. a kind of appraisal procedure of HVDC converter substation electromagnetic interference characterized by comprising
Preset model is configured according to soil conductivity parameter, obtains considering that the dipole radiation of the earth factor calculates mould
Type；Wherein, the soil conductivity parameter is soil region conductivity and soil region dielectric constant；
Simulation calculation is carried out to electromagnetic radiation attenuation characteristic using the dipole radiation computation model for considering the earth factor, really
Determine radio interference limit value and its corresponding protective range.
2. the appraisal procedure of HVDC converter substation electromagnetic interference as described in claim 1, which is characterized in that described
Preset model is configured according to soil conductivity parameter, obtains the dipole radiation computation model for considering the earth factor, specifically
Are as follows:
Obtain considering the dipole radiation computation model of the earth factor according to formula (1):
Wherein, E (R) is electric field strength of the electric dipole in radiated electric field, and Idl is electric dipole, and ω is angular frequency, and λ is wave
It is long, Ne0λFor longitudinal polarization Vector eigen function, ε0For air section dielectric constant, u0For area of space magnetic conductivity, ε is the soil
Earth region conductivity, σ are the soil region dielectric constant, Z0For electric dipole radiation height；
3. the appraisal procedure of HVDC converter substation electromagnetic interference as described in claim 1, which is characterized in that described to adopt
Simulation calculation is carried out to electromagnetic radiation attenuation characteristic with the dipole radiation computation model for considering the earth factor, is determined wireless
Electrical interference limit value and its corresponding protective range, comprising:
Several preset levels distance and several predeterminated frequencies are inputted the dipole radiation for considering the earth factor to calculate
Model carries out simulation calculation, obtains under different frequency radiation field intensity with horizontal distance change curve；Wherein, the horizontal distance is
Distance of the preset observation point to radiation source in radiated electric field；
According to radiation field intensity under the different frequency with horizontal distance change curve, two levels under the frequency of will acquire one
Difference calculating is carried out apart from corresponding radiation field intensity, obtains the first intensity of radiation electric field attenuation amplitude；
The first intensity of radiation electric field attenuation amplitude and electromagnetic interference standard limit are subjected to difference calculating, it is wireless to obtain first
Electrical interference limit value and its corresponding protective range.
4. the appraisal procedure of HVDC converter substation electromagnetic interference as claimed in claim 3, which is characterized in that the side
Method further include:
According to radiation field intensity under the different frequency with horizontal distance change curve, two under the horizontal distance of will acquire one
The corresponding radiation field intensity of frequency carries out difference calculating, obtains the second intensity of radiation electric field attenuation amplitude；
The second intensity of radiation electric field attenuation amplitude and electromagnetic interference standard limit are subjected to difference calculating, it is wireless to obtain second
Electrical interference limit value and its corresponding protective range.
5. a kind of assessment device of HVDC converter substation electromagnetic interference characterized by comprising
Model construction module obtains considering the earth factor for being configured preset model according to soil conductivity parameter
Dipole radiation computation model；Wherein, the soil conductivity parameter is soil region conductivity and soil region dielectric constant；
Simulation Calculation, it is special for being decayed using the dipole radiation computation model for considering the earth factor to electromagnetic radiation
Property carry out simulation calculation, determine radio interference limit value and its corresponding protective range.
6. the computing device of HVDC converter substation electromagnetic radiation attenuation characteristic as claimed in claim 5, which is characterized in that institute
It states model construction module and preset model is configured according to soil conductivity parameter, obtain the dipole spoke for considering the earth factor
Penetrate computation model；Wherein, the soil conductivity parameter is soil region conductivity and soil region dielectric constant, is specifically included:
Obtain considering the dipole radiation computation model of the earth factor according to formula (2):
Wherein, E (R) is electric field strength of the electric dipole in radiated electric field, and Idl is electric dipole, and ω is angular frequency, and λ is wave
It is long, Ne0λFor longitudinal polarization Vector eigen function, ε 0 is air section dielectric constant, u0For area of space magnetic conductivity, ε is described
Soil region conductivity, σ are the soil region dielectric constant, and Z0 is electric dipole radiation height；
7. the computing device of HVDC converter substation electromagnetic radiation attenuation characteristic as claimed in claim 5, which is characterized in that institute
Simulation Calculation is stated to carry out electromagnetic radiation attenuation characteristic using the dipole radiation computation model for considering the earth factor
Simulation calculation determines radio interference limit value and its corresponding protective range, comprising:
Several preset levels distance and several predeterminated frequencies are inputted the dipole radiation for considering the earth factor to calculate
Model carries out simulation calculation, obtains under different frequency radiation field intensity with horizontal distance change curve；Wherein, the horizontal distance is
Distance of the preset observation point to radiation source in radiated electric field；
According to radiation field intensity under the different frequency with horizontal distance change curve, two levels under the frequency of will acquire one
Difference calculating is carried out apart from corresponding radiation field intensity, obtains the first intensity of radiation electric field attenuation amplitude；
The first intensity of radiation electric field attenuation amplitude and electromagnetic interference standard limit are subjected to difference calculating, it is wireless to obtain first
Electrical interference limit value and its corresponding protective range.
8. the computing device of HVDC converter substation electromagnetic radiation attenuation characteristic as claimed in claim 7, which is characterized in that institute
State Simulation Calculation further include:
According to radiation field intensity under the different frequency with horizontal distance change curve, two under the horizontal distance of will acquire one
The corresponding radiation field intensity of frequency carries out difference calculating, obtains the second intensity of radiation electric field attenuation amplitude；
The second intensity of radiation electric field attenuation amplitude and electromagnetic interference standard limit are subjected to difference calculating, it is wireless to obtain second
Electrical interference limit value and its corresponding protective range.
9. a kind of assessment device of HVDC converter substation electromagnetic interference, including processor, memory and it is stored in institute
The computer program executed by the processor is stated in memory and is configured as, the processor executes the computer program
The appraisal procedure of HVDC converter substation electromagnetic interference of the Shi Shixian as described in any one of Claims 1-4.
10. a kind of computer readable storage medium, which is characterized in that the computer readable storage medium includes the calculating of storage
Machine program, wherein equipment where controlling the computer readable storage medium in computer program operation is executed as weighed
Benefit require any one of 1 to 4 described in HVDC converter substation electromagnetic interference appraisal procedure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811114007.0A CN109388867B (en) | 2018-09-25 | 2018-09-25 | Method and device for evaluating electromagnetic radiation interference of high-voltage direct-current converter station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811114007.0A CN109388867B (en) | 2018-09-25 | 2018-09-25 | Method and device for evaluating electromagnetic radiation interference of high-voltage direct-current converter station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109388867A true CN109388867A (en) | 2019-02-26 |
| CN109388867B CN109388867B (en) | 2023-05-19 |
Family
ID=65418858
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811114007.0A Active CN109388867B (en) | 2018-09-25 | 2018-09-25 | Method and device for evaluating electromagnetic radiation interference of high-voltage direct-current converter station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109388867B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114089048A (en) * | 2021-11-18 | 2022-02-25 | 中国电力科学研究院有限公司 | Transformer substation high-frequency electromagnetic radiation testing method, device, equipment and medium |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995024663A1 (en) * | 1994-03-11 | 1995-09-14 | Baker Hughes Incorporated | A borehole measurement system employing electromagnetic wave propagation |
| CN101438176A (en) * | 2006-05-04 | 2009-05-20 | 埃克森美孚上游研究公司 | Time lapse analysis with electromagnetic data |
| CN101583886A (en) * | 2006-12-07 | 2009-11-18 | 韦伊赛莱公共有限公司 | Method and system for soil moisture estimation |
| US20100324826A1 (en) * | 2007-12-28 | 2010-12-23 | Luling Martin G | Determination of complex dielectric constants from electromagnetic propagation measurements |
| US20160187524A1 (en) * | 2014-12-29 | 2016-06-30 | Avraham Suhami | Method and apparatus for mapping the underground soil |
-
2018
- 2018-09-25 CN CN201811114007.0A patent/CN109388867B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995024663A1 (en) * | 1994-03-11 | 1995-09-14 | Baker Hughes Incorporated | A borehole measurement system employing electromagnetic wave propagation |
| CN101438176A (en) * | 2006-05-04 | 2009-05-20 | 埃克森美孚上游研究公司 | Time lapse analysis with electromagnetic data |
| CN101583886A (en) * | 2006-12-07 | 2009-11-18 | 韦伊赛莱公共有限公司 | Method and system for soil moisture estimation |
| US20100324826A1 (en) * | 2007-12-28 | 2010-12-23 | Luling Martin G | Determination of complex dielectric constants from electromagnetic propagation measurements |
| US20160187524A1 (en) * | 2014-12-29 | 2016-06-30 | Avraham Suhami | Method and apparatus for mapping the underground soil |
Non-Patent Citations (5)
| Title |
|---|
| 刘亚军等: "地下远距离通信系统传播信号监测仿真", 《计算机仿真》 * |
| 庞瑜: "单层土壤模型电阻率对雷电辐射电磁场影响的分析", 《中国科技信息》 * |
| 张明霞等: "水平多层土壤对雷电定量精度的影响", 《高电压技术》 * |
| 景弘等: "基于时域差分法的雷击回击通道周围空间电磁场研究", 《电瓷避雷器》 * |
| 赵志斌等: "混合路径土壤对雷电辐射磁场的影响分析", 《高电压技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114089048A (en) * | 2021-11-18 | 2022-02-25 | 中国电力科学研究院有限公司 | Transformer substation high-frequency electromagnetic radiation testing method, device, equipment and medium |
| CN114089048B (en) * | 2021-11-18 | 2023-12-29 | 中国电力科学研究院有限公司 | Method, device, equipment and medium for testing high-frequency electromagnetic radiation of transformer substation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109388867B (en) | 2023-05-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| De Conti et al. | Revision, extension, and validation of Jordan's formula to calculate the surge impedance of vertical conductors | |
| Regue et al. | A genetic algorithm based method for source identification and far-field radiated emissions prediction from near-field measurements for PCB characterization | |
| Toftgard et al. | Effects on portable antennas of the presence of a person | |
| Noda et al. | Thin wire representation in finite difference time domain surge simulation | |
| Araneo et al. | Time-domain analysis of building shielding against lightning electromagnetic fields | |
| Radchenko et al. | Transfer function method for predicting the emissions in a CISPR-25 test-setup | |
| CN111062153A (en) | Dry-type air-core reactor magnetic field analysis method and device and storage medium | |
| Keshtkar et al. | Improving the accuracy of impedance calculation for distribution power system | |
| Silveira et al. | Evaluation of lightning-induced voltages over a lossy ground by the hybrid electromagnetic model | |
| Qi et al. | Time-domain PEEC transient analysis for a wire structure above the perfectly conducting ground with the incident field from a distant lightning channel | |
| CN109388867A (en) | A kind of appraisal procedure and device of HVDC converter substation electromagnetic interference | |
| CN110082612A (en) | Ultra-high/extra-high voltage converter station DC fields Electric Field Simulation method, apparatus and storage medium | |
| CN112035967A (en) | Method and device for simulating no-load exciting current of transformer under direct-current magnetic biasing working condition | |
| Mackowiak et al. | A statistical analysis of the influence of the human body on the radiation pattern of wearable antennas | |
| Abd-Alhameed et al. | Computation of specific absorption rate in the human body due to base-station antennas using a hybrid formulation | |
| Sun et al. | Calculation of electromagnetic radiation of VSC-HVDC converter system | |
| Heidler et al. | Field enhancement by lightning strikes to tall tower versus lightning strikes to flat ground | |
| CN111710025A (en) | Method and system for determining electric field intensity of line on-line monitoring equipment | |
| Obiekezie et al. | Complex locations of equivalent dipoles for improved characterization of radiated emissions | |
| Stracqualursi et al. | On the transient analysis of towers: A revised theory based on Sommerfeld-Goubau wave | |
| Ramli et al. | Hybrid computational scheme for antenna-human body interaction | |
| Pula et al. | Analysis of shielding effectiveness of a faraday cage for high voltage laboratory | |
| Rašić et al. | A simplified analytical model for human exposure to electromagnetic radiation of HF wireless power transmitter | |
| CN112036005A (en) | Method and device for calculating lightning induction voltage | |
| CN116882219B (en) | Field line coupling method based on DGTD and FDTD |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |