CN113804980B - Method, device, equipment and storage medium for determining radio interference of power transmission line - Google Patents
Method, device, equipment and storage medium for determining radio interference of power transmission line Download PDFInfo
- Publication number
- CN113804980B CN113804980B CN202111062590.7A CN202111062590A CN113804980B CN 113804980 B CN113804980 B CN 113804980B CN 202111062590 A CN202111062590 A CN 202111062590A CN 113804980 B CN113804980 B CN 113804980B
- Authority
- CN
- China
- Prior art keywords
- radio interference
- transmission line
- interference value
- power transmission
- value
- 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.)
- Active
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 118
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000004020 conductor Substances 0.000 claims abstract description 55
- 238000013461 design Methods 0.000 claims abstract description 55
- 238000004364 calculation method Methods 0.000 claims description 20
- 238000010586 diagram Methods 0.000 claims description 7
- 238000012545 processing Methods 0.000 claims description 6
- 238000004590 computer program Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- XOFYZVNMUHMLCC-ZPOLXVRWSA-N prednisone Chemical compound O=C1C=C[C@]2(C)[C@H]3C(=O)C[C@](C)([C@@](CC4)(O)C(=O)CO)[C@@H]4[C@@H]3CCC2=C1 XOFYZVNMUHMLCC-ZPOLXVRWSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
- G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
- G01R29/0871—Complete apparatus or systems; circuits, e.g. receivers or amplifiers
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/001—Measuring interference from external sources to, or emission from, the device under test, e.g. EMC, EMI, EMP or ESD testing
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Monitoring And Testing Of Transmission In General (AREA)
- Supply And Distribution Of Alternating Current (AREA)
Abstract
The invention discloses a method, a device, equipment and a storage medium for determining radio interference of a power transmission line, wherein the method comprises the following steps: acquiring design parameters and operation parameters of a power transmission line; respectively calculating a first radio interference value at different frequencies and a second radio interference value at different heights according to the design parameters and the operation parameters; obtaining a target conductor of the power transmission line according to the design parameters and the operation parameters, setting one point in the target conductor as a circle center, and setting N as a radius to obtain an outer contour line of the target conductor; calculating a radio interference value of the outer contour line under a preset frequency to obtain a third radio interference value; and determining the radio interference distribution characteristic of the power transmission line according to the first radio interference value, the second radio interference value and the third radio interference value. By the method, the radio interference values under various conditions can be obtained, and the radio interference distribution characteristics of the power transmission line can be more accurately determined by combining the obtained radio interference values under various conditions.
Description
Technical Field
The invention relates to the technical field of electromagnetic compatibility of high-voltage power transmission and transformation engineering, in particular to a method, a device, equipment and a storage medium for determining radio interference of a power transmission line.
Background
The high-voltage transmission line is generally suspended on a line tower at intervals by adopting three-phase wires, when the wires transmit high-voltage current, corona discharge is inevitably generated at various connection points, so that high-frequency electromagnetic waves are radiated to surrounding space, the frequency of the high-frequency electromagnetic waves is mainly concentrated at 0.15 MHz-30 MHz, and the highest frequency can reach 1GHz, and the influence on radio communication in similar frequency bands can be caused; on the other hand, radio interference generated by corona discharge is also one of the components of the electromagnetic environment of the high-voltage transmission line, and the development of radio interference calculation has great significance for the development of the transmission technology.
At present, the calculation of the radio interference of the power transmission line is often subjected to the influence of the randomness factors such as the meteorological factors, the running conditions of the wires and the like, and particularly, when the power transmission line has the defects of aging, strand breakage, serious corrosion and the like, the high-frequency electromagnetic field generated by the line can be correspondingly changed, so that the accuracy of the calculation result is lower. Therefore, accurately calculating the radio interference distribution characteristics of the transmission line is an important technical problem to be considered for the design of the high-voltage transmission line.
Disclosure of Invention
In view of the above technical problems, the present invention provides a method, an apparatus, a device, and a storage medium for determining radio interference of a power transmission line, which can comprehensively obtain more accurate radio interference distribution characteristics of the power transmission line by calculating radio interference values under various conditions.
In a first aspect, the present invention provides a method for determining radio interference of a power transmission line, including:
acquiring design parameters and operation parameters of a power transmission line;
respectively calculating a first radio interference value at different frequencies and a second radio interference value at different heights according to the design parameter and the operation parameter;
obtaining a target conductor of the power transmission line according to the design parameters and the operation parameters, setting one point in the target conductor as a circle center, and setting N as a radius to obtain an outer contour line of the target conductor; wherein N is a non-zero natural number;
calculating a radio interference value of the outer contour line under a preset frequency to obtain a third radio interference value;
and determining the radio interference distribution characteristic of the power transmission line according to the first radio interference value, the second radio interference value and the third radio interference value.
Optionally, the first radio interference value, the second radio interference value and the third radio interference value are calculated by the international radio interference special committee CISPR empirical formula.
Optionally, the radio interference distribution characteristic includes: maximum radio interference value and radio interference attenuation characteristics.
Optionally, the determining the radio interference distribution characteristic of the power transmission line according to the first radio interference value, the second radio interference value and the third radio interference value specifically includes:
drawing a first radio interference profile, a second radio interference profile and a third radio interference profile, respectively, based on the first radio interference value, the second radio interference value and the third radio interference value;
and obtaining the maximum radio interference value and the radio interference attenuation characteristic of the power transmission line according to the first radio interference distribution curve, the second radio interference distribution curve and the third radio interference distribution curve.
Optionally, the obtaining the target conductor of the power transmission line according to the design parameter and the operation parameter specifically includes:
determining a spatial position of each wire in the transmission line based on the design parameters and the operating parameters;
and determining the outermost wire, the highest wire and the lowest wire of the power transmission line according to the spatial positions of the wires.
Optionally, the design parameters of the power transmission line include: tower design parameters and wire design parameters; the tower design parameters comprise basic load corresponding to the maximum calling height, a basic acting force design value, a tower head clearance circle diagram and a tower command diagram; the wire design parameters comprise the model numbers, parameters, tension and hanging point positions of the wires and the ground wires.
Optionally, the operation parameters of the power transmission line include: the number of split conductors, the conductor radius, the split conductor radius and the lowest phase conductor height.
In a second aspect, the present invention provides a transmission line radio interference determination device, including:
the acquisition module is used for acquiring design parameters and operation parameters of the power transmission line;
a first calculation module for calculating a first radio interference value at different frequencies and a second radio interference value at different heights, respectively, according to the design parameter and the operation parameter;
the second calculation module is used for obtaining a target conductor of the power transmission line according to the design parameters and the operation parameters, setting one point in the target conductor as a circle center, and obtaining an outer contour line of the target conductor with N as a radius; wherein N is a non-zero natural number; calculating a radio interference value of the outer contour line under a preset frequency to obtain a third radio interference value;
and the determining module is used for determining the radio interference distribution characteristic of the power transmission line according to the first radio interference value, the second radio interference value and the third radio interference value.
Optionally, the transmission line radio interference determination means calculates the first radio interference value, the second radio interference value, and the third radio interference value by the international radio interference special committee CISPR empirical formula method.
In a third aspect, the present invention provides a data processing apparatus comprising a processor coupled to a memory, the memory storing a program, the program being executable by the processor to cause the data processing apparatus to perform the transmission line radio interference determination method of the first aspect.
In a fourth aspect, the present invention also provides a computer readable storage medium storing a computer program which, when run on a computer, causes the computer to perform the transmission line radio interference determination method of the first aspect.
Compared with the prior art, the embodiment of the invention has the beneficial effects that at least one of the following points is adopted:
according to the obtained design parameters and operation parameters of the power transmission line, radio interference values at different frequencies and different heights are calculated respectively, and a first radio interference distribution rule at a fixed height and different frequency bands and a second radio interference distribution rule at a fixed frequency band and different heights are obtained; meanwhile, determining an outer contour line of the power transmission line based on the design parameters and the operation parameters, and calculating a radio interference value under the outer contour line to obtain a third radio interference distribution rule of the tower outer contour line; the first radio interference distribution rule, the second radio interference distribution rule and the third radio interference distribution rule can be integrated to more accurately determine the radio interference distribution characteristics of the power transmission line, theoretical data support is provided for high-frequency characteristic electromagnetic interference of the power transmission line, and effective guidance is provided for accurately judging defects such as wire strand breakage, serious corrosion and the like.
Drawings
In order to more clearly illustrate the technical solutions of the present invention, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic flow chart of a method for determining radio interference of a power transmission line according to an embodiment of the present invention;
fig. 2 is a block diagram of a transmission line radio interference determination device according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As an important component of the power system, the power transmission line bears the task of transmitting and distributing electric energy, and the existing power transmission line mainly comprises an overhead line and a cable line.
The power transmission lines are classified into alternating current power transmission lines and direct current power transmission lines according to electric energy properties; the power transmission lines and the distribution lines are classified according to voltage classes, and at present, the voltage classes of the power transmission lines in China mainly comprise 35kV, 60kV, 110kV, 154kV, 220kV, 330kV, 500kV, 1000kV alternating current, +/-500 kV and +/-800 kV direct current.
The invention is mainly applied to the calculation of the radio interference of the transmission line below 500kV, and particularly as shown in fig. 1, the method for determining the radio interference of the transmission line provided by one embodiment of the invention comprises the following steps:
s1: and obtaining design parameters and operation parameters of the power transmission line.
In this embodiment, the design parameters of the power transmission line include a tower design parameter and a wire design parameter, where the wire design parameter is a design parameter of a conductive wire.
The tower of the power transmission line is a general name of an electric pole and an iron tower, and is used for supporting wires and lightning conductors so as to keep certain safety distances among the wires, between the wires and the ground and between the wires and crossing objects; typical tower types of towers include 500kV single-loop tower type, 500kV same-tower double-loop tower type, 500kV/220kV same-tower four-loop tower type and 500kV same-tower four-loop tower type.
In the embodiment, a 500kV single-loop tower type tower is selected as an example, and tower design parameters such as tower type use conditions, basic load corresponding to maximum call height, basic acting force design values, tower head clearance circle diagrams and tower commander diagrams are obtained based on a tower type design manual of the tower.
In this embodiment, the design parameters of the conductive wire and the ground wire include information such as model numbers, parameters, tension, hanging point positions, and the like of the conductive wire and the ground wire of the power transmission line.
In the transmission line, the lead is an element for conducting current and transmitting electric energy, and the ground wire can reduce the probability of lightning striking the lead, improve the lightning-resistant level, reduce the lightning strike tripping times and ensure the safe power transmission of the transmission line. Normally, the ground wire is not insulated from the tower, but is directly erected on top of the tower and is connected to the grounding device through the tower or the ground down-conductor. In the embodiment, the power transmission line adopts an overhead bare conductor, and the conductor adopts a steel-cored aluminum stranded wire, one wire for each phase and three phases.
In the power transmission line, the operation parameters of the power transmission circuit are obtained according to the actual field operation condition of the power transmission line, and specifically include information such as the number of split conductors, the radius of the split conductors, the height of the lowest phase conductors and the like.
S2: according to the design parameter and the operation parameter, respectively calculating a first radio interference value at different frequencies and a second radio interference value at different heights.
Specifically, according to three parts of information of a ground wire design parameter, a tower type design parameter and an operation parameter of a power transmission circuit, a three-phase single-loop power transmission line radio interference calculation model is constructed, wherein the model is specifically constructed by adopting an international radio interference special Committee (CISPR) (International Special Committee on Radio Interference, CISPR) empirical formula, and the international radio interference special committee CISPR empirical formula is specifically:
wherein E is i Representing the linear distance D from the ith phase conductor i Radio interference field strength at (mu V/m) in dB; g maxi Representing the maximum surface potential gradient of the ith phase conductor, wherein the unit is kV/cm; r is (r) i The radius of the subconductors of the ith phase conductor is expressed in cm; r is (r) i One of the wire design parameters; d (D) i Represents the linear distance from the ith phase conductor to the preset reference point Q, and the unit is m and D i The specific calculation of (2) is as follows;
in the formula, h i The height to the ground of the ith phase conductor, which is usually the height of the lowest point of sag, can be obtained by combining the design parameters of the pole tower and the operation parameters of the power transmission line; x is x i Representing the projection distance from the Q point to the ith phase conductor, and can be arranged through a pole towerAnd obtaining the counting parameters.
In this embodiment, the preset reference point Q may be a point with a height of 2 meters from the ground.
Maximum surface potential gradient g for each phase conductor in transmission line radio interference calculation model max In this embodiment, a mirror image method is adopted to perform calculation so as to obtain a potential coefficient matrix P of the transmission line conductor.
Specifically, for each element in the transmission line conductor potential coefficient matrix P, there are:
wherein (1)>
Wherein r is eq Representing equivalent radius, wherein the unit is m; r represents the radius of the split conductor and is expressed as m; r represents the radius of the subconductors, and the unit is m; n represents the number of split wires; h represents the average height of the wire, and the unit is m; d' ij And d ij The position of the wire hanging point can be calculated; epsilon 0 The dielectric constant was represented by a value of (8.85X10-12) F/m.
Parameter r eq R and R are parameters in the design parameters of the wire; the parameters n and h are both parameters of the operating parameters.
After the potential coefficient matrix P of the transmission line wire is calculated, the average potential gradient g of the surface of the wire is calculated by combining the rated phase voltage U of the transmission line avr ：
q＝P -1 U
Thus, the maximum potential gradient of the wire surface is expressed as: g avrmax ＝g avr [1+(n-1)r/R]。
For the radio interference field intensity of the three-phase power transmission line, the radio interference field intensity of each phase under 0.5MHz can be obtained through the power transmission line radio interference calculation model, and the maximum radio interference field intensity of one phase is defined as the final radio interference field intensity of the three-phase power transmission line.
In practical power transmission engineering, the transmission capacity of 220kV and above lines is large, and in order to reduce corona loss and corona interference, phase-split wires are often adopted, namely: each phase adopts two or more wires, and the split wires can be used for conveying larger electric energy, so that the loss of the electric energy is less, and the vibration-proof performance is good. It should be noted that, the method for calculating the radio interference value of the power transmission line provided by the embodiment of the invention is applied to a line with the split conductor number not greater than 4.
In one embodiment, for the multi-loop line erected on the same tower, the radio interference field intensity of each phase of wire can be obtained through calculation of the radio interference calculation model of the power transmission line, and then the radio interference field intensities generated by the same phase of wire are geometrically added to form superimposed radio interference field intensities Ea, eb and Ec of the three-phase power transmission line.
In the above embodiment, the radio interference value at 0.5MHz is solved by using the constructed transmission line radio interference calculation model, and the radio interference field intensity at other different frequencies can be obtained by calculating the increment of the radio interference field intensity at that frequency relative to the radio interference field intensity at 0.5 MHz.
Specifically, when the measured frequency is in the range of 0.15 to 30MHz and is not 0.5MHz, the radio interference field strength delta E between the measured frequency and 0.5MHz is calculated by the following formula:
where ΔE is in decibels (dB); f represents frequency in megahertz (MHz).
In this embodiment, a preset reference point Q is taken as a reference point, and 12 typical measurement frequency bands of the transmission line during field test are selected, wherein the typical measurement frequency bands are 0.15MHz, 0.5MHz, 1MHz, 2MHz, 3MHz, 4MHz, 5MHz, 10MHz, 15MHz, 20MHz, 25MHz and 30MHz, the transmission line radio interference field intensity under each frequency band is calculated respectively, so as to obtain first radio interference values of different frequency bands under a fixed height, and a distribution curve of the first radio interference values along with the change of distance is drawn according to the solved first radio interference values.
Meanwhile, in the embodiment, the radio interference value of the transmission line is calculated every 1 meter at intervals within the range of 5-25 m from the ground by taking 0.5MHz as a typical frequency to obtain second radio interference values of different heights under 0.5 MHz; and drawing a distribution curve of the second radio interference value with the change of the distance at the typical frequency according to the solved second radio interference value.
When the distance between the lowest phase conductor of the tower and the ground is less than 30m, the limiting range of the height value is adjusted as follows: the lowest point is 5m away from the ground, the highest point is 5m away from the lowest phase conductor, and the range between the two points is the range.
S3: obtaining a target conductor of the power transmission line according to the design parameters and the operation parameters, setting one point in the target conductor as a circle center, and setting N as a radius to obtain an outer contour line of the target conductor; wherein N is a non-zero natural number; and calculating the radio interference value of the outer contour line under the preset frequency to obtain a third radio interference value.
Specifically, the target conductor includes an outermost conductor, a highest position conductor, and a lowest position conductor.
In the embodiment, selecting one target point on the outermost wire, the highest wire position and the lowest wire respectively, and determining outer contour lines corresponding to the three target wires by taking the point as a circle center and taking N as a radius; specifically, the value of N is 8 meters.
And calculating a radio interference value under the outer contour line based on the projection distance from the circle center to the corresponding wire by taking 0.5MHz as a typical frequency to obtain a third radio interference value, and drawing a distribution curve of the third radio interference value of the tower outer contour line along with the change of the distance according to the obtained third radio interference value.
Specifically, the outermost, highest and lowest positions are relative positions of the wire and the tower, and the "outer" represents the direction in which the wire is far from the tower.
S4: and determining the radio interference distribution characteristic of the power transmission line according to the first radio interference value, the second radio interference value and the third radio interference value.
In this embodiment, the radio interference distribution characteristics include a maximum radio interference value and a radio interference attenuation characteristic, and after the first radio interference distribution curve, the second radio interference distribution curve, and the third radio interference distribution curve are obtained through the above steps, the maximum radio interference value and the radio interference attenuation characteristic of the power transmission line are obtained according to the distribution rules of the three types of curves.
According to the method and the device for determining the radio interference of the power transmission line, provided by the invention, the first radio interference distribution rule under the fixed height and different frequency bands and the second radio interference distribution rule under the fixed frequency bands and different heights are obtained by respectively calculating the radio interference values under different frequencies and different heights; meanwhile, determining an outer contour line of the power transmission line based on design parameters and operation parameters of the power transmission line, and calculating a radio interference value under the outer contour line to obtain a third radio interference distribution rule of the tower outer contour line; finally, the first radio interference distribution rule, the second radio interference distribution rule and the third radio interference distribution rule are integrated, so that the radio interference distribution characteristics of the power transmission line are more accurately determined, theoretical data support is provided for high-frequency characteristic electromagnetic interference of the power transmission line, and effective guidance is provided for accurately judging defects such as wire strand breakage and serious corrosion.
In a second aspect, an embodiment of the present invention provides a transmission line radio interference determining apparatus, including an acquisition module 101, a first calculation module 102, a second calculation module 103, and a determination module 104.
The acquisition module 101 is configured to acquire design parameters and operation parameters of the power transmission line.
The first calculation module 102 is configured to calculate a first radio interference value at different frequencies and a second radio interference value at different heights according to the design parameter and the operation parameter, respectively.
The second calculation module 103 is configured to obtain a target conductor of the power transmission line according to the design parameter and the operation parameter, set a point in the target conductor as a circle center, and N as a radius, to obtain an outer contour line of the target conductor; wherein N is a non-zero natural number; and calculating the radio interference value of the outer contour line under the preset frequency to obtain a third radio interference value.
The determining module 104 is configured to determine a radio interference distribution characteristic of the power transmission line according to the first radio interference value, the second radio interference value and the third radio interference value.
The content of the information interaction and the execution process of each module in the device is based on the same concept as the method embodiment of the present invention, and the specific content can be referred to the description in the method embodiment of the first aspect of the present invention, which is not repeated here.
In a third aspect, the present invention provides a data processing apparatus comprising a processor coupled to a memory, the memory storing a program, the program being executable by the processor to cause the data processing apparatus to perform the transmission line radio interference determination method of the first aspect.
In a fourth aspect, the present invention also provides a computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a transmission line radio interference determination method as described in the first aspect above.
Those skilled in the art will appreciate that implementing all or part of the above-described methods in accordance with the embodiments may be accomplished by way of a computer program stored on a computer-readable storage medium, which when executed, may comprise the steps of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), or the like.
While the foregoing is directed to the preferred embodiments of the present invention, it will be appreciated by those skilled in the art that changes and modifications may be made without departing from the principles of the invention, such changes and modifications are also intended to be within the scope of the invention.
Claims (10)
1. A transmission line radio interference determination method, comprising:
acquiring design parameters and operation parameters of a power transmission line;
respectively calculating a first radio interference value at different frequencies and a second radio interference value at different heights according to the design parameter and the operation parameter;
obtaining a target conductor of the power transmission line according to the design parameters and the operation parameters, setting one point in the target conductor as a circle center, and setting N as a radius to obtain an outer contour line of the target conductor; wherein N is a non-zero natural number;
calculating a radio interference value of the outer contour line under a preset frequency to obtain a third radio interference value;
and determining the radio interference distribution characteristic of the power transmission line according to the first radio interference value, the second radio interference value and the third radio interference value.
2. The transmission line radio interference determination method according to claim 1, wherein,
the first radio interference value, the second radio interference value and the third radio interference value are calculated by the international radio interference special committee CISPR empirical formula.
3. The method according to claim 1, wherein the determining the radio interference distribution characteristic of the power transmission line according to the first radio interference value, the second radio interference value and the third radio interference value is specifically:
drawing a first radio interference profile, a second radio interference profile and a third radio interference profile, respectively, based on the first radio interference value, the second radio interference value and the third radio interference value; and obtaining the maximum radio interference value and the radio interference attenuation characteristic of the power transmission line according to the first radio interference distribution curve, the second radio interference distribution curve and the third radio interference distribution curve.
4. The transmission line radio interference determination method according to claim 1, wherein,
the target conductor of the power transmission line is obtained according to the design parameters and the operation parameters, specifically:
determining a spatial position of each wire in the transmission line based on the design parameters and the operating parameters;
and determining the outermost wire, the highest wire and the lowest wire of the power transmission line according to the spatial positions of the wires.
5. The transmission line radio interference determination method according to claim 1, wherein the design parameters of the transmission line include:
tower design parameters and wire design parameters; wherein,,
the tower design parameters comprise basic load corresponding to the maximum call height, a basic acting force design value, a tower head clearance circle diagram and a tower command diagram;
the wire design parameters comprise the model numbers, parameters, tension and hanging point positions of the wires and the ground wires.
6. The transmission line radio interference determination method according to claim 1, wherein the operation parameters of the transmission line include:
the number of split conductors, the conductor radius, the split conductor radius and the lowest phase conductor height.
7. A transmission line radio interference determination apparatus, characterized by comprising:
the acquisition module is used for acquiring design parameters and operation parameters of the power transmission line;
a first calculation module for calculating a first radio interference value at different frequencies and a second radio interference value at different heights, respectively, according to the design parameter and the operation parameter;
the second calculation module is used for obtaining a target conductor of the power transmission line according to the design parameters and the operation parameters, setting one point in the target conductor as a circle center, and obtaining an outer contour line of the target conductor with N as a radius; wherein N is a non-zero natural number; calculating a radio interference value of the outer contour line under a preset frequency to obtain a third radio interference value;
and the determining module is used for determining the radio interference distribution characteristic of the power transmission line according to the first radio interference value, the second radio interference value and the third radio interference value.
8. The transmission line radio interference determination device according to claim 7, wherein the first radio interference value, the second radio interference value, and the third radio interference value are calculated by the international radio interference special committee CISPR empirical formula.
9. A data processing apparatus, comprising:
a processor coupled to a memory, the memory storing a program that is executed by the processor to cause the data processing apparatus to perform the transmission line radio interference determination method according to any one of claims 1 to 6.
10. A computer-readable storage medium comprising,
the computer readable storage medium stores a computer program which, when run on a computer, causes the computer to perform the transmission line radio interference determination method as claimed in any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111062590.7A CN113804980B (en) | 2021-09-10 | 2021-09-10 | Method, device, equipment and storage medium for determining radio interference of power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111062590.7A CN113804980B (en) | 2021-09-10 | 2021-09-10 | Method, device, equipment and storage medium for determining radio interference of power transmission line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113804980A CN113804980A (en) | 2021-12-17 |
| CN113804980B true CN113804980B (en) | 2023-07-21 |
Family
ID=78940746
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111062590.7A Active CN113804980B (en) | 2021-09-10 | 2021-09-10 | Method, device, equipment and storage medium for determining radio interference of power transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113804980B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508070A (en) * | 2011-11-03 | 2012-06-20 | 国网电力科学研究院 | Method for ensuring radio inference of transmission line |
| CN104793065A (en) * | 2014-01-17 | 2015-07-22 | 国家电网公司 | Method of determining radio interference in AC transmission line crossed erection region |
| CN105676027A (en) * | 2016-01-12 | 2016-06-15 | 中国电力科学研究院 | Actual UHV DC line radio interference obtaining method |
| CN108205088A (en) * | 2017-12-25 | 2018-06-26 | 重庆大学 | A kind of parallel radio interference of high voltage ac/dc circuit calculates and optimization method |
| CN110082621A (en) * | 2019-05-07 | 2019-08-02 | 北京航空航天大学 | A kind of radio interference indirect gain method |
| CN110927484A (en) * | 2019-11-15 | 2020-03-27 | 国网江西省电力有限公司电力科学研究院 | Alternating current transmission line radio interference three-dimensional distribution calculation method and system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110850180A (en) * | 2019-10-31 | 2020-02-28 | 国网江苏省电力有限公司南京供电分公司 | Method for calculating radio interference borne by communication equipment mounted on electric power tower |
-
2021
- 2021-09-10 CN CN202111062590.7A patent/CN113804980B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102508070A (en) * | 2011-11-03 | 2012-06-20 | 国网电力科学研究院 | Method for ensuring radio inference of transmission line |
| CN104793065A (en) * | 2014-01-17 | 2015-07-22 | 国家电网公司 | Method of determining radio interference in AC transmission line crossed erection region |
| CN105676027A (en) * | 2016-01-12 | 2016-06-15 | 中国电力科学研究院 | Actual UHV DC line radio interference obtaining method |
| CN108205088A (en) * | 2017-12-25 | 2018-06-26 | 重庆大学 | A kind of parallel radio interference of high voltage ac/dc circuit calculates and optimization method |
| CN110082621A (en) * | 2019-05-07 | 2019-08-02 | 北京航空航天大学 | A kind of radio interference indirect gain method |
| CN110927484A (en) * | 2019-11-15 | 2020-03-27 | 国网江西省电力有限公司电力科学研究院 | Alternating current transmission line radio interference three-dimensional distribution calculation method and system |
Non-Patent Citations (2)
| Title |
|---|
| 交流输电线路的无线电干扰计算方法;庄池杰 等;电网技术;第32卷(第02期);第56-60页 * |
| 超高压交流输电线路的无线电干扰计算;肖阶平 等;电气技术(第04期);第49-52、58页 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113804980A (en) | 2021-12-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Okabe et al. | Discussion on standard waveform in the lightning impulse voltage test | |
| Okabe et al. | Development of high frequency circuit model for oil-immersed power transformers and its application for lightning surge analysis | |
| Okabe et al. | Analysis of aspects of lightning strokes to large-sized transmission lines | |
| Martinez-Velasco et al. | Overhead lines | |
| JPH08509854A (en) | Shielded high voltage overhead power line | |
| Mahdiraji | Investigation of overvoltages caused by lightning strikes on transmission lines and GIS substation equipment | |
| CN113804980B (en) | Method, device, equipment and storage medium for determining radio interference of power transmission line | |
| Esmeraldo et al. | A proposed design for the new Furnas 500 kV transmission lines-the High Surge Impedance Loading Line | |
| He et al. | Radio interference performance of HVAC conductor bundles at high-altitude location: measured data analysis and altitude correction | |
| CN111814355B (en) | High-voltage transmission line lightning shielding failure protection method and device and terminal equipment | |
| Xie et al. | Experimental investigation of discharge path selectivity of a long air gap containing a floating conductor | |
| Martinez-Velasco | Parameter determination for electromagnetic transient analysis in power systems | |
| CN113376478A (en) | Power transmission line lightning stroke or short circuit fault positioning method based on edge detection | |
| CN110307898B (en) | Method and device for calculating noise below high-voltage direct-current line by adopting molded lines | |
| Palone et al. | Field measurements and model comparison for a very long submarine HV AC three-core cable | |
| CN116735979A (en) | Three-core alternating current submarine cable armor loss measurement method | |
| US7923640B2 (en) | High current cable | |
| Kharlamov et al. | Characteristics of PLC channels over high voltage power cables and mixed cable-overhead high voltage power lines | |
| Zhang et al. | Study on High-Altitude Electromagnetic Pulse Protection Technology of Underground Nuclear Power Plant Generator | |
| CN115291057A (en) | Multi-loop high-voltage cable fault calculation method and device, electronic equipment and medium | |
| Cui et al. | Research on Lightning Current Shunting Characteristics Between Tower and Ground Wires Based on Field Test and Numerical Simulation | |
| Du et al. | Experimental investigation into harmonic impedance of low-voltage cables | |
| Kocewiak et al. | Wind power plant transmission system modelling for harmonic propagation and small-signal stability analysis | |
| Kocewiak et al. | Impact of cable impedance modelling assumptions on harmonic losses in offshore wind power plants | |
| CN116520196B (en) | On-line monitoring method for turn-to-turn short circuit fault of dry type air-core reactor |
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 |