CN108009312A - A kind of conductor configurations method and system for reducing high voltage direct current split conductor surface field - Google Patents
A kind of conductor configurations method and system for reducing high voltage direct current split conductor surface field Download PDFInfo
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Abstract
The invention discloses it is a kind of reduce high voltage direct current split conductor surface field conductor configurations method, the described method includes：Determine the arrangement mode of the radical of sub-conductor and the sub-conductor in high voltage direct current split conductor；Select in the split conductor sub-conductor of surface electric field intensity maximum and therewith symmetrical sub-conductor as more heavy in section sub-conductor；The base radius of default more heavy in section sub-conductor, and the base radius is stepped up, obtain the radius of multiple more heavy in section sub-conductors；According to the radius of the multiple heavy in section sub-conductor, the physical model of corresponding bipolar conductor analog line is established；According to the physical model, the maximum and and minimum value of sub-conductor maximum surface electric field intensity in the split conductor are calculated；Calculate the ratio of the maxima and minima of maximum surface electric field intensity in the split conductor, the radius of the ratio corresponding more heavy in section sub-conductor when minimum, as the radius of the more heavy in section sub-conductor configured in the sub-conductor.
Description
Technical field
The present invention relates to high-voltage dc transmission Power-line technology field, more specifically, a kind of reduce high voltage direct current split conductor table
The conductor configurations method and system of face electric field.
Background technology
To meet China's long-distance and large-capacity power transmission needs, State Grid Corporation of China studies and built up Burner zone-Shanghai,
A plurality of ± 800kV the extra-high voltage direct-current transmission engineerings such as silk screen-southern Jiangsu, Hami-Zhengzhou, when D.C. high voltage transmission, divide wire table
Face generally there are light current and swoon, and when corona discharge occurs, can produce audible noise, radio interference, total electric field and ion stream
Deng surrounding enviroment being caused with harmful effect, therefore the raising of transmission voltage grade proposes corona effect control the skill of higher
Art requirement.The main factor for influencing conductor corona electric discharge is conductive line surfaces field strength, and the division of D.C. high voltage transmission generally use is led
Line reduces conductive line surfaces field strength.Corona loss is the energy loss that conducting wire produces in corona discharge process, in Resources for construction
Today of conservation-minded society, the conductive line surfaces field strength for studying transmission line of electricity have weight to improving leads of ultra-high voltage power transmission lines configuration
Want meaning.
Each sub-conductor of prior art conventional high-pressure direct current transportation conducting wire is same model with section, the spacing between sub-conductor
Equal, each sub-conductor locus difference causes direct-to-ground capacitance and leads line capacitance difference, in addition the phase interaction between each sub-conductor
With causing the different skewness of surface electric field intensity size of every root conducting wire, closer to another polar conductor and position on the lower side
The surface electric field intensity of sub-conductor is maximum, and the surface electric field intensity of other sub-conductors is smaller；The surface electric field intensity skewness of each sub-conductor.At present
Divide radical by increasing conducting wire mostly both at home and abroad, the method in the whole sub-conductor sections of increase is come in fact to reduce conductive line surfaces field strength
Total electric field, radio interference and the audible noise for now reducing hvdc transmission line are horizontal.The conductor configurations method of present technology,
Some need not all using big conducting wire with regard to that can meet the area of environmental requirement, due to the use of heavy in section sub-conductor, because
This improves the material cost for setting split conductor, and the requirement to the load-bearing capacity of circuit tower is also higher, while and unresolved son
The problem of surface electric field intensity skewness of conducting wire.
Therefore, it is necessary to a kind of technology, by the configuration to sub-conductor in high voltage direct current split conductor, reduces heavy in section son
The material cost of conducting wire, while solve the problems, such as the surface electric field intensity skewness of sub-conductor.
The content of the invention
This application provides it is a kind of reduce high voltage direct current split conductor surface field conductor configurations method, with solve how
To the allocation problem of sub-conductor in high voltage direct current split conductor.
To solve the above-mentioned problems, the present invention provides a kind of conductor configurations of low high voltage direct current split conductor surface field
Method, the described method includes：
Determine the arrangement mode of the radical of sub-conductor and the sub-conductor in high voltage direct current split conductor；
Select in the split conductor sub-conductor of surface electric field intensity maximum and therewith symmetrical sub-conductor as more heavy in section
Sub-conductor；
The base radius of default more heavy in section sub-conductor, and the base radius is stepped up, acquisition is multiple more
The radius of heavy in section sub-conductor；
According to the radius of the multiple more heavy in section sub-conductor, the physics mould of corresponding bipolar conductor analog line is established
Type；
According to the physical model, the maximum and minimum of sub-conductor maximum surface electric field intensity in the split conductor are calculated
Value；
The ratio of the maxima and minima of sub-conductor maximum surface electric field intensity in the split conductor is calculated, the ratio is most
The radius of hour corresponding more heavy in section sub-conductor, as the more heavy in section sub-conductor configured in the sub-conductor
Radius.
Preferably, molecular wire is more heavy in section sub-conductor in the middle part of the sub-conductor, more heavy in section sub-conductor
Arrangement mode to be symmetrical.
Preferably, the method for calculating maximum surface electric field intensity and the minimal surface field strength per root conducting wire includes：
Gradually image method, FInite Element or Analogue charge method, approximate formula method.
Preferably, when the radical of the sub-conductor in the split conductor is 8, by positive electrode surface field strength in the sub-conductor
The sub-conductor of maximum sub-conductor and therewith symmetrical sub-conductor and negative terminal surface field strength maximum and symmetrical sub-conductor is done therewith
For more heavy in section sub-conductor.
Preferably, when the radical of the sub-conductor in the split conductor is 8, the radius of more heavy in section sub-conductor
For 1.02 times of non-more heavy in section sub-conductor radius.
Preferably, the radius of more heavy in section sub-conductor and the radius ratio of non-more heavy in section sub-conductor are no more than
1.1。
Based on another aspect of the present invention, there is provided a kind of conductor configurations system for reducing high voltage direct current split conductor surface field
System, the system comprises：
Arrangement units, determine the arrangement mode of the radical of sub-conductor and the sub-conductor in high voltage direct current split conductor；
Selecting unit, for selecting to use in the split conductor in the sub-conductor of surface electric field intensity maximum and symmetrical therewith
Sub-conductor is as more heavy in section sub-conductor；
Default unit, for the base radius of default more heavy in section sub-conductor, and is stepped up the basis half
Footpath, obtains the radius of multiple more heavy in section sub-conductors；
Unit is established, for the radius according to the multiple more heavy in section sub-conductor, establishes corresponding bipolar conductor mould
Intend the physical model of circuit；
First computing unit, for according to the physical model, calculating sub-conductor maximum surface field in the split conductor
Strong maximum and minimum value；
Second computing unit, for calculating the maxima and minima of sub-conductor maximum surface electric field intensity in the split conductor
Ratio, the radius of the ratio corresponding more heavy in section sub-conductor when minimum, as what is configured in the sub-conductor
The radius of more heavy in section sub-conductor more heavy in section bigger section.
Preferably, molecular wire is more heavy in section sub-conductor in the middle part of the sub-conductor, more heavy in section sub-conductor
Arrangement mode to be symmetrical.
Preferably, first computing unit is additionally operable to, it is described calculate the maximum surface electric field intensity per root conducting wire and
The method of minimal surface field strength includes：Gradually image method, FInite Element or Analogue charge method, approximate formula method.
Preferably, the arrangement units are additionally operable to, when the radical of the sub-conductor in the split conductor is 8, by described in
The sub-conductor of positive electrode surface field strength maximum and symmetrical sub-conductor and the sub-conductor of negative terminal surface field strength maximum therewith in sub-conductor
Symmetrical sub-conductor is as more heavy in section sub-conductor therewith.
Preferably, the default unit is additionally operable to, when the sub-conductor in the split conductor radical be 8 when, it is described more
The radius of heavy in section sub-conductor is 1.02 times of non-more heavy in section sub-conductor radius.
Preferably, the default unit is additionally operable to, the radius of more heavy in section sub-conductor and non-more heavy in section son
The radius ratio of conducting wire is no more than 1.1.
Technical scheme, gives a kind of conductor configurations side for reducing high voltage direct current split conductor surface field
Method, technical scheme optimize split conductor surface electric field intensity by local using more heavy in section sub-conductor, and conventional etc.
Section split conductor is compared, and can under equal conditions reduce Master Cost, while can reduce the corona discharge degree of transmission pressure,
Optimize the harmony of each sub-conductor surface electric field intensity, be the line of hvdc transmission line so as to optimize the electromagnetic environment on circuit periphery
Road design provides the configuration parameter of split conductor.
Brief description of the drawings
By reference to the following drawings, the illustrative embodiments of the present invention can be more fully understood by：
Fig. 1 is the conductor configurations side according to a kind of reduction high voltage direct current split conductor surface field of embodiment of the present invention
Method flow chart；
Fig. 2, which is, divides cutting for conductor configurations when according to a kind of split conductor sub-conductor radical of embodiment of the present invention being 8
Face schematic diagram；
Fig. 3 is when according to a kind of split conductor sub-conductor radical of embodiment of the present invention being 8, and bigger is cut in split conductor
When the base radius of the sub-conductor in face is 18.1mm, the maximum of the maximum surface electric field intensity of each sub-conductor and the ratio of minimum value with
Functional relation schematic diagram between split conductor major and minor axis ratio value；
Fig. 4 is when according to a kind of split conductor sub-conductor radical of embodiment of the present invention being 8, heavy in section in split conductor
The base radius of sub-conductor when being 18.1mm, the surface electric field intensity contrast distribution figure of each sub-conductor in split conductor；And
Fig. 5 is the conductor configurations system according to a kind of reduction high voltage direct current split conductor surface field of embodiment of the present invention
System structure chart.
Embodiment
The illustrative embodiments of the present invention are introduced referring now to attached drawing, however, the present invention can use many different shapes
Formula is implemented, and is not limited to the embodiment described herein, there is provided these embodiments are to disclose at large and fully
The present invention, and fully pass on the scope of the present invention to person of ordinary skill in the field.Show for what is be illustrated in the accompanying drawings
Term in example property embodiment is not limitation of the invention.In the accompanying drawings, identical cells/elements use identical attached
Icon is remembered.
Unless otherwise indicated, term (including scientific and technical terminology) used herein has person of ordinary skill in the field
It is common to understand implication.Further it will be understood that the term limited with usually used dictionary, be appreciated that and its
The linguistic context of association area has consistent implication, and is not construed as Utopian or overly formal meaning.
Fig. 1 is the conductor configurations side according to a kind of reduction high voltage direct current split conductor surface field of embodiment of the present invention
Method flow chart.Embodiments of the present invention, give a kind of conductor configurations side for reducing high voltage direct current split conductor surface field
Method, the sub-conductor in application are divided into more heavy in section heavy in section sub-conductor of sub-conductor and Fei Geng.Local sub-conductor in the application
Using more heavy in section sub-conductor, another part uses non-more heavy in section sub-conductor.Embodiments of the present invention pass through part
Split conductor surface electric field intensity is optimized using more heavy in section sub-conductor.As shown in Figure 1, a kind of reduce high voltage direct current split conductor table
The conductor configurations method 100 of face electric field is since step 101：
Preferably, in step 101：Determine the arrangement side of the radical of sub-conductor and sub-conductor in high voltage direct current split conductor
Formula.
Preferably, the arrangement spacing of the sub-conductor in split conductor is equal.
Preferably, in step 102：Select to use in split conductor in the sub-conductor of surface electric field intensity maximum and symmetrical therewith
Sub-conductor is as more heavy in section sub-conductor.The application considers sub-conductor according to the whole machine balancing of aerial split conductor
Maximum surface electric field intensity position is mainly distributed both ends and on the sub-conductor of ground and cathode conductor side, and more heavy in section son is led
Line is mainly used in the sub-conductor of surface electric field intensity maximum and therewith on the sub-conductor of symmetrical sub-conductor or bottommost.
Preferably, when the radical of the sub-conductor in split conductor is 8, by two of positive electrode surface field strength maximum in sub-conductor
Root conducting wire and therewith symmetrical two roots conducting wire and two root conducting wires of negative terminal surface field strength maximum and symmetrical two therewith
Sub-conductor is as more heavy in section sub-conductor.In the application, when the approximate number of the sub-conductor in split conductor is 8,8 roots are selected
Positive electrode surface field strength is maximum in conducting wire two and therewith symmetrical two amount to 4 root conducting wires and anode is led for symmetrical 4 therewith
Line is as more heavy in section sub-conductor.
According to the whole machine balancing of aerial split conductor in the application, while consider sub-conductor maximum surface electric field intensity position master
It is distributed both ends and on the sub-conductor of ground and cathode conductor side, more heavy in section sub-conductor is mainly used in surface field
Strong maximum two root conducting wires and therewith on symmetrical two roots conducting wire.
Preferably, when the radical of the sub-conductor in split conductor is 8, the radius of more heavy in section sub-conductor is non-bigger
1.02 times of the sub-conductor radius in section.
Conducting wire when preferably, such as 1.02 times of radiuses is not national standard conducting wire, can selection criteria system of wires nearby.
In the application, as wire radius 18.1mm (the sub-conductor sectional area 720mm used2) led for basic conducting wire, division
When line sub-conductor radical is 8, the optimal theoretical value of local big wire radius：18.4mm, local big wire radius increase 2%；
In the application, as wire radius 19.2mm (the sub-conductor sectional area 800mm used2) led for basic conducting wire, division
When line sub-conductor radical is 8, local more heavy in section optimal theoretical value of sub-conductor radius：19.5mm, it is local more heavy in section
Sub-conductor radius increase 2%；
In the application, as wire radius 20.3mm (the sub-conductor sectional area 900mm used2) led for basic conducting wire, division
When line sub-conductor radical is 8, local more heavy in section optimal theoretical value of sub-conductor radius：20.6mm, local big wire radius
Increase 1.4%；
In the application, as wire radius 21.05mm (the sub-conductor sectional area 1000mm used2) it is basic conducting wire, divide
When conducting wire sub-conductor radical is 8, local more heavy in section optimal theoretical value of sub-conductor radius：21.3mm, local more heavy in section
Sub-conductor radius increase 1.17%；
Preferably, the radius of more heavy in section sub-conductor and the radius ratio of non-more heavy in section sub-conductor are no more than 1.1 times.
In the application, when high voltage direct current split conductor locally uses more heavy in section sub-conductor, local more heavy in section sub-conductor is in work
Only increase a certain proportion of radius in journey.
Preferably, molecular wire is more heavy in section sub-conductor in the middle part of sub-conductor, the arrangement side of more heavy in section sub-conductor
Formula is symmetrical.In the application, according to the difference of each sub-conductor arrangement mode, such as bottommost in monopole conductor spread pattern
There is 1 conducting wire, large-section lead can be 1 in single polarity.Because HVDC transmission line divides positive and negative anodes, it is typically all
Even number root.
In the application, local more heavy in section sub-conductor is part use in HVDC Transmission line and is symmetrically to use
's.
Preferably, in step 103：The base radius of more heavy in section sub-conductor is preset, and is stepped up base radius, is obtained
Take the radius of multiple more heavy in section sub-conductors.
The application, using a kind of wire radius of cross-sectional shape as basic radius, incrementally increases the part more heavy in section of use
Sub-conductor radius, establish corresponding bipolar conductor artificial line respectively according to different local more heavy in section sub-conductor radiuses
The physical model on road.
Preferably, being incremented by for local more heavy in section sub-conductor radius is equally spaced or unequal interval.
Preferably, in step 104：According to the radius of multiple more heavy in section sub-conductors, corresponding bipolar conductor mould is established
Intend the physical model of circuit.
Preferably, in step 105：According to physical model, the maximum of sub-conductor maximum surface electric field intensity in split conductor is calculated
Value and minimum value.
In the application, calculate includes per the method for the maximum surface electric field intensity of root conducting wire：Gradually image method, FInite Element,
Analogue charge method, approximate formula method etc..In the application, the maximum surface electric field intensity of the sub-conductor in split conductor is calculated, by more
The maximum surface electric field intensity of sub-conductor is ranked up, and selects the maximum and minimum value of more root conducting wire maximum field strengths.
Preferably, in step 106：Calculate the ratio of the maxima and minima of sub-conductor maximum surface electric field intensity in split conductor
Value, the radius of corresponding more heavy in section sub-conductor when ratio is minimum, as the more heavy in section sub-conductor configured in sub-conductor
Radius.
In the application, the maximum surface electric field intensity of every root conducting wire under each physical model of comparative analysis, calculates each son and leads
The ratio of the maxima and minima of line maximum surface electric field intensity, when ratio is minimum for this in physical model using part bigger
Theoretical the best time of the sub-conductor in section.The application is by the radius value of the local more heavy in section sub-conductor of the theory and actual work
The diameter of wire contrast used in journey, is using local more heavy in section sub-conductor with the immediate actual wire of theoretical optimal value
Optimal conducting wire.
Fig. 2, which is, divides cutting for conductor configurations when according to a kind of split conductor sub-conductor radical of embodiment of the present invention being 8
Face schematic diagram, as shown in Fig. 2, more heavy in section sub-conductor is mainly used in two root conducting wire of bottom.More heavy in section is removed to lead
Remaining non-more heavy in section sub-conductor outside line, radius is consistent with model.
Fig. 3 is when according to a kind of split conductor sub-conductor radical of embodiment of the present invention being 8, and bigger is cut in split conductor
When the base radius of the sub-conductor in face is 18.1mm, the maximum of the maximum surface electric field intensity of each sub-conductor and the ratio of minimum value with
Functional relation schematic diagram between split conductor major and minor axis ratio value.As shown in figure 3, when the wire radius 18.1mm (sons used
Sectional area of wire 720mm2) it is basic conducting wire, when split conductor sub-conductor radical is 8, each sub-conductor maximum surface electric field intensity is maximum
Value and the function relation figure between the ratio and split conductor major and minor axis ratio value of minimum value.The horizontal seat of function relation figure in Fig. 3
Local big wire radius value is designated as, function relation figure ordinate is the maximum and minimum value of each sub-conductor maximum surface electric field intensity
Ratio.As shown in figure 3, become larger with the major and minor axis ratio value of abscissa, the reduction of first walking unhurriedly of the ratio of ordinate is delayed again
Step increase finally significantly increase, when the sub-conductor radius in local bigger section is 18.9mm, maximum surface electric field intensity maximum with
The ratio of minimum value obtains minimum value, i.e., obtains optimal configuration method at this time.Wherein, sub-conductor surface electric field intensity refers to that single son is led
The maximum of line surface electric field intensity.
Fig. 4 is when according to a kind of split conductor sub-conductor radical of embodiment of the present invention being 8, and bigger is cut in split conductor
When the base radius of the sub-conductor in face is 18.1mm, the surface electric field intensity contrast distribution figure of each sub-conductor in split conductor.Such as Fig. 4 institutes
Show, as wire radius 18.1mm (the sub-conductor sectional area 720mm used2) it is basic conducting wire, split conductor sub-conductor radical is 8
When, the surface electric field intensity contrast distribution of each sub-conductor of split conductor；Each sub-conductor surface field in two kinds of different conductor radius drags
Strong correction data is as shown in Figure 4.
Fig. 5 is the conductor configurations system according to a kind of reduction high voltage direct current split conductor surface field of embodiment of the present invention
System structure chart.As shown in figure 5, a kind of conductor configurations system 500 for reducing high voltage direct current split conductor surface field includes：
Arrangement units 501, determine the arrangement mode of the radical of sub-conductor and sub-conductor in high voltage direct current split conductor.
Preferably, arrangement units 501 are additionally operable to, and the arrangement spacing of the sub-conductor in split conductor is equal.
Preferably, arrangement units 501 are additionally operable to, when the sub-conductor in split conductor radical be 8 when, by sub-conductor just
The sub-conductor of the sub-conductor of pole surface electric field intensity maximum and therewith symmetrical sub-conductor and negative terminal surface field strength maximum and symmetrical therewith
Sub-conductor as more heavy in section sub-conductor.
Selecting unit 502, for selecting to use in split conductor in the sub-conductor of surface electric field intensity maximum and symmetrical therewith
Sub-conductor is as more heavy in section sub-conductor.
Preferably, molecular wire is more heavy in section sub-conductor in the middle part of sub-conductor, the arrangement side of more heavy in section sub-conductor
Formula is symmetrical.
Default unit 503, for presetting the base radius of more heavy in section sub-conductor, and is stepped up base radius, obtains
Take the radius of multiple more heavy in section sub-conductors.
Preferably, unit 503 is preset to be additionally operable to, when the radical of the sub-conductor in split conductor is 8, more heavy in section son
The radius of conducting wire is 1.02 times of non-more heavy in section sub-conductor radius.
Preferably, preset unit 503 to be additionally operable to, the radius of more heavy in section sub-conductor and non-more heavy in section sub-conductor
Radius ratio is no more than 1.1 times.
Unit 504 is established, for the radius according to multiple more heavy in section sub-conductors, establishes corresponding bipolar conductor simulation
The physical model of circuit.
First computing unit 505, for according to physical model, calculating sub-conductor maximum surface electric field intensity in the split conductor
Maximum and minimum value.
Preferably, the first computing unit 505 is additionally operable to, and calculate includes per the method for the maximum surface electric field intensity of root conducting wire：
Gradually image method, FInite Element or Analogue charge method, approximate formula method.
Second computing unit 506, for calculating the maxima and minima of sub-conductor maximum surface electric field intensity in split conductor
Ratio, the radius of corresponding more heavy in section sub-conductor when ratio is minimum, as the more heavy in section son configured in sub-conductor
The radius of conducting wire.
A kind of conductor configurations system 500 of reduction high voltage direct current split conductor surface field of embodiment of the present invention and sheet
A kind of conductor configurations method 100 of reduction high voltage direct current split conductor surface field of invention embodiment is corresponding, herein not
Repeated again.
Embodiments of the present invention optimize split conductor surface electric field intensity by local using heavy in section sub-conductor, with routine
Cross-section split conductor is compared, and can under equal conditions reduce Master Cost, while can reduce the corona discharge journey of transmission pressure
Degree, optimizes the harmony of each sub-conductor surface electric field intensity, is hvdc transmission line so as to optimize the electromagnetic environment on circuit periphery
Circuit design provides the configuration parameter of split conductor.
By reference to a small amount of embodiment, the invention has been described.However, it is known in those skilled in the art, as
What subsidiary Patent right requirement was limited, except the present invention other embodiments disclosed above equally fall the present invention's
In the range of.
Normally, all terms used in the claims are all solved according to them in the common meaning of technical field
Release, unless in addition clearly being defined wherein.All references " one/described/be somebody's turn to do [device, component etc.] " are all opened ground
At least one example being construed in described device, component etc., unless otherwise expressly specified.Any method disclosed herein
Step need not all be run with disclosed accurately order, unless explicitly stated otherwise.
Claims (12)
1. a kind of conductor configurations method for reducing high voltage direct current split conductor surface field, the described method includes：
Determine the arrangement mode of the radical of sub-conductor and the sub-conductor in high voltage direct current split conductor；
Select in the split conductor sub-conductor of surface electric field intensity maximum and therewith symmetrical sub-conductor as more heavy in section son
Conducting wire；
The base radius of default more heavy in section sub-conductor, and the base radius is stepped up, obtain multiple biggers and cut
The radius of the sub-conductor in face；
According to the radius of the multiple more heavy in section sub-conductor, the physical model of corresponding bipolar conductor analog line is established；
According to the physical model, the maximum and minimum value of sub-conductor maximum surface electric field intensity in the split conductor are calculated；
The ratio of the maxima and minima of sub-conductor maximum surface electric field intensity in the split conductor is calculated, when the ratio is minimum
The radius of corresponding more heavy in section sub-conductor, as the half of the more heavy in section sub-conductor configured in the sub-conductor
Footpath.
2. the method according to claim 1, sub-conductor middle part molecular wire is more heavy in section sub-conductor, and the bigger is cut
The arrangement mode of the sub-conductor in face is symmetrical.
3. according to the method described in claim 1, the method for calculating the maximum surface electric field intensity per root conducting wire includes：
Gradually image method, FInite Element, Analogue charge method, approximate formula method.
4. according to the method described in claim 1, when the radical of the sub-conductor in the split conductor is 8, the son is led
In line the sub-conductor of positive electrode surface field strength maximum and therewith the sub-conductor of symmetrical sub-conductor and negative terminal surface field strength maximum and with
Symmetrical sub-conductor as more heavy in section sub-conductor.
5. according to the method described in claim 1, when the radical of the sub-conductor in the split conductor is 8, the bigger is cut
The radius of the sub-conductor in face is 1.02 times of non-more heavy in section sub-conductor radius.
6. according to the method described in claim 1, the radius of more heavy in section sub-conductor and non-more heavy in section sub-conductor
Radius ratio be no more than 1.1.
7. a kind of conductor configurations system for reducing high voltage direct current split conductor surface field, the system comprises：
Arrangement units, determine the arrangement mode of the radical of sub-conductor and the sub-conductor in high voltage direct current split conductor；
Selecting unit, for select in the split conductor using surface electric field intensity maximum sub-conductor and symmetrical son is led therewith
Line is as more heavy in section sub-conductor；
Default unit, for the base radius of default more heavy in section sub-conductor, and is stepped up the base radius, obtains
Take the radius of multiple more heavy in section sub-conductors；
Unit is established, for the radius according to the multiple more heavy in section sub-conductor, establishes corresponding bipolar conductor artificial line
The physical model on road；
First computing unit, for according to the physical model, calculating sub-conductor maximum surface electric field intensity in the split conductor
Maximum and minimum value；
Second computing unit, for calculating the ratio of the maxima and minima of sub-conductor maximum surface electric field intensity in the split conductor
Value, the radius of the ratio corresponding more heavy in section sub-conductor when minimum, as the bigger configured in the sub-conductor
The radius of the sub-conductor in section more heavy in section bigger section.
8. system according to claim 7, sub-conductor middle part molecular wire is more heavy in section sub-conductor, and the bigger is cut
The arrangement mode of the sub-conductor in face is symmetrical.
9. system according to claim 7, first computing unit is additionally operable to, described to calculate the maximum per root conducting wire
The method of surface electric field intensity includes：Gradually image method, FInite Element, Analogue charge method, approximate formula method.
10. system according to claim 7, the arrangement units are additionally operable to, when the radical of the sub-conductor in the split conductor
For 8 when, by the sub-conductor of positive electrode surface field strength maximum in the sub-conductor and symmetrical sub-conductor and negative terminal surface field strength therewith
The sub-conductor of maximum and therewith symmetrical sub-conductor are as more heavy in section sub-conductor.
11. system according to claim 7, the default unit is additionally operable to, when the radical of the sub-conductor in the split conductor
For 8 when, the radius of more heavy in section sub-conductor is 1.02 times of non-more heavy in section sub-conductor radius.
12. system according to claim 7, the default unit is additionally operable to, the radius of more heavy in section sub-conductor with it is non-
The radius ratio of more heavy in section sub-conductor is no more than 1.1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711059955.4A CN108009312B (en) | 2017-11-01 | 2017-11-01 | Conductor configuration method and system for reducing surface electric field of high-voltage direct-current split conductor |
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| CN111651863A (en) * | 2020-05-12 | 2020-09-11 | 南方电网科学研究院有限责任公司 | Overhead transmission line design method and system based on split conductor equivalent radius |
| CN111697525A (en) * | 2020-04-30 | 2020-09-22 | 中国电力科学研究院有限公司 | High-voltage split tube bus spacer corona discharge control method and system |
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| CN111651863A (en) * | 2020-05-12 | 2020-09-11 | 南方电网科学研究院有限责任公司 | Overhead transmission line design method and system based on split conductor equivalent radius |
| CN111651863B (en) * | 2020-05-12 | 2023-03-14 | 南方电网科学研究院有限责任公司 | Overhead transmission line design method and system based on split conductor equivalent radius |
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