CN204680405U - 800kV and above UHV transmission twisted wire - Google Patents
800kV and above UHV transmission twisted wire Download PDFInfo
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- CN204680405U CN204680405U CN201520419849.2U CN201520419849U CN204680405U CN 204680405 U CN204680405 U CN 204680405U CN 201520419849 U CN201520419849 U CN 201520419849U CN 204680405 U CN204680405 U CN 204680405U
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B9/00—Power cables
- H01B9/008—Power cables for overhead application
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Abstract
The utility model discloses a kind of 800kV and above UHV transmission twisted wire, comprises the tension unit that is positioned at center and stranded the first duralumin conductive layer in tension unit outer surface, the second duralumin conductive layer, the first trapezoidal conductive layer and the second trapezoidal conductive layer successively; Described first trapezoidal conductive layer forms by 19 ~ 21 first trapezoidal aluminium single lines are stranded, to be that the second trapezoidal aluminium single line of isosceles trapezoid is stranded by 24 ~ 26 cross sections form second trapezoidal conductive layer, all having a cross section in described first trapezoidal aluminium single line, the second trapezoidal aluminium single line is circular copper conductor, described tension unit comprises the aluminium lamination by the stranded circular steel twisted wire of some steel wires and coated circular steel twisted wire outer surface, is filled with polyester gluing filling part in described aluminium lamination between some steel wires.The utility model reduces the effect of the AC impedance (resistance) that high order harmonic component produces, and under the prerequisite not improving cross section, improves transmission line capability, original corridor does not change steel tower substantially, reach increase-volume 68%, ampacity is large, quality is light, sag characteristic is good, extend the useful life of circuit.
Description
Technical field
The utility model relates to a kind of transmission pressure, particularly relates to a kind of 800kV and above UHV transmission twisted wire.
Background technology
Chinese national economy continues rapid growth to the demand of electric power in continuous increase, according to the planning of Guo Wang Construction Company Limited, will focus the consruction in recent years ± 800kV and above extra high voltage direct current transmission line.Transmission line construction, need more large-section lead but do not wish wire by wind impact strengthen.We design existing large cross section for this reason, have the extraordinary electric power conveying electricity wire reducing windage.Traditional wire, its single line structure is made up of circular single line, very large by high altitude wind effect after single line is stranded, causes wire to be subject to very large wind-force effect, overhead line structures are also subject to great wind-force effect, for the wire that cross section is little, its effect performance is not clearly, but for the wire of cross section more than 1000, due to this defect, cause the requirement that can not meet the transmission of modern power network large-capacity power, therefore need to develop a kind of novel wire, to meet the needs of China's power industry development.
Summary of the invention
The utility model provides a kind of 800kV and above UHV transmission twisted wire, this 800kV and above UHV transmission twisted wire reduce the effect of the AC impedance (resistance) that high order harmonic component produces, under the prerequisite not improving cross section, improve transmission line capability, original corridor does not change steel tower substantially, reaches increase-volume 68%, ampacity is large, quality is light, sag characteristic is good, extend the useful life of circuit, meet the requirement of modern power network large-capacity power transmission.
For achieving the above object, the technical solution adopted in the utility model is: a kind of 800kV and above UHV transmission twisted wire, comprise the tension unit that is positioned at center and stranded the first duralumin conductive layer in tension unit outer surface, the second duralumin conductive layer, the first trapezoidal conductive layer and the second trapezoidal conductive layer successively, described first trapezoidal conductive layer is positioned at the second duralumin conductive layer outer surface, and described second trapezoidal conductive layer is positioned at the first trapezoidal conductive layer outer surface;
Described tension unit comprises the aluminium lamination by the stranded circular steel twisted wire of some steel wires and coated circular steel twisted wire outer surface, is filled with polyester gluing filling part in described aluminium lamination between some steel wires;
To be that circular the first circular aluminum single line is stranded by 10 ~ 14 cross sections form described first duralumin conductive layer, and to be that circular the second circular aluminum single line is stranded by 16 ~ 20 cross sections form described second duralumin conductive layer;
To be that the first trapezoidal aluminium single line of isosceles trapezoid is stranded by 19 ~ 21 cross sections form described first trapezoidal conductive layer, to be that the second trapezoidal aluminium single line of isosceles trapezoid is stranded by 24 ~ 26 cross sections form second trapezoidal conductive layer, all having a cross section in described first trapezoidal aluminium single line, the second trapezoidal aluminium single line is circular copper conductor, the sectional area of this copper conductor be the first trapezoidal aluminium single line, the second trapezoidal aluminium single line sectional area 35 ~ 45%.
The technical scheme improved further in technique scheme is as follows:
1., in such scheme, the area of section of described tension unit accounts for the total cross-sectional area 9 ~ 12% of falling blast wire.
2. in such scheme, in described first duralumin conductive layer, the first circular aluminum single line direction of lay is dextrad, and in described second duralumin conductive layer, the second circular aluminum single line direction of lay is left-hand.
3., in such scheme, the thickness of described aluminium lamination is 0.1 ~ 0.4mm; Described gauge of wire is 10mm ~ 15mm.
Because technique scheme is used, the utility model compared with prior art has following advantages:
1. the utility model 800kV and above UHV transmission twisted wire, its first trapezoidal conductive layer is positioned at the second duralumin conductive layer outer surface, described second trapezoidal conductive layer is positioned at the first trapezoidal conductive layer outer surface, first trapezoidal aluminium single line, all having a cross section in second trapezoidal aluminium single line is circular copper conductor, the sectional area of this copper conductor is the first trapezoidal aluminium single line, 35 ~ 45% of the sectional area of the second trapezoidal aluminium single line, circular copper conductor is provided with in the trapezoidal aluminium single line that cross section is isosceles trapezoid, reduce the effect of the AC impedance (resistance) that high order harmonic component produces, under the prerequisite not improving cross section, improve transmission line capability, original corridor does not change steel tower substantially, reach increase-volume 68%, ampacity is large, quality is light, sag characteristic is good, extend the useful life of circuit, meet the requirement of modern power network large-capacity power transmission.
2. the utility model 800kV and above UHV transmission twisted wire, it comprises the tension unit that is positioned at center and stranded in the first duralumin conductive layer of tension unit outer surface successively, second duralumin conductive layer, first trapezoidal conductive layer and the second trapezoidal conductive layer, to be that circular the first circular aluminum single line is stranded by 10 ~ 14 cross sections form first duralumin conductive layer, to be that circular the second circular aluminum single line is stranded by 16 ~ 20 cross sections form described second duralumin conductive layer, described first trapezoidal conductive layer forms by 19 ~ 21 first trapezoidal aluminium single lines are stranded, second trapezoidal conductive layer by 24 ~ 26 cross sections be the second trapezoidal aluminium single line of isosceles trapezoid stranded and, the wire that design is produced is extremely tight, space availability ratio is up to 93%, smooth surface, not concavo-convex, make wire windward surface area greatly reduce, produce and reduce wind effects.
3. the utility model 800kV and above UHV transmission twisted wire, its tension unit comprises the aluminium lamination by the stranded circular steel twisted wire of some steel wires and coated circular steel twisted wire outer surface, polyester gluing filling part is filled with in described aluminium lamination between some steel wires, make stranded tension unit rounding, also be conducive to fixing twisting pitch, ensure that the advantage keeping bending diameter little for a long time.
Accompanying drawing explanation
Accompanying drawing 1 is the utility model 800kV and above UHV transmission twisted wire structural representation.
In above accompanying drawing: 1, tension unit; 2, the first duralumin conductive layer; 21, the first circular aluminum single line; 3, the second duralumin conductive layer; 31, the second circular aluminum single line; 4, the first trapezoidal conductive layer; 41, the first trapezoidal aluminium single line; 5, the second trapezoidal conductive layer; 51, the second trapezoidal aluminium single line; 6, steel wire; 7, circular steel twisted wire; 8, aluminium lamination; 9, polyester gluing filling part; 10, copper conductor.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further described:
Embodiment 1: a kind of 800kV and above UHV transmission twisted wire, comprise the tension unit 1 that is positioned at center and stranded in the first duralumin conductive layer 2, second duralumin conductive layer 3, first trapezoidal conductive layer 4 and the second trapezoidal conductive layer 5 of tension unit 1 outer surface successively, described first trapezoidal conductive layer 4 is positioned at the second duralumin conductive layer 3 outer surface, and described second trapezoidal conductive layer 5 is positioned at the first trapezoidal conductive layer 4 outer surface;
Described tension unit 1 comprises the aluminium lamination 8 by the stranded circular steel twisted wire 7 of some steel wires 6 and coated circular steel twisted wire 7 outer surface, is filled with polyester gluing filling part 9 in described aluminium lamination 8 between some steel wires 6;
To be that circular the first circular aluminum single line 21 is stranded by 10 ~ 14 cross sections form described first duralumin conductive layer 2, and to be that circular the second circular aluminum single line 31 is stranded by 16 ~ 20 cross sections form described second duralumin conductive layer 3;
To be that the first trapezoidal aluminium single line 41 of isosceles trapezoid is stranded by 19 ~ 21 cross sections form described first trapezoidal conductive layer 4, to be that the second trapezoidal aluminium single line 51 of isosceles trapezoid is stranded by 24 ~ 26 cross sections form second trapezoidal conductive layer 5, all having a cross section in the trapezoidal aluminium single line 51 of described first trapezoidal aluminium single line 41, second is circular copper conductor 10, and the sectional area of this copper conductor 10 is 35 ~ 45% of the sectional area of the trapezoidal aluminium single line 51 of the first trapezoidal aluminium single line 41, second.
The area of section of above-mentioned tension unit 1 accounts for the total cross-sectional area 9% of falling blast wire.
In above-mentioned first duralumin conductive layer 2, the first circular aluminum single line 21 direction of lay is dextrad, and in described second duralumin conductive layer 3, the second circular aluminum single line 31 direction of lay is left-hand.
The thickness of above-mentioned aluminium lamination 8 is 0.15mm; The diameter of described steel wire 6 is 12mm.
Embodiment 2: a kind of 800kV and above UHV transmission twisted wire, comprise the tension unit 1 that is positioned at center and stranded in the first duralumin conductive layer 2, second duralumin conductive layer 3, first trapezoidal conductive layer 4 and the second trapezoidal conductive layer 5 of tension unit 1 outer surface successively, described first trapezoidal conductive layer 4 is positioned at the second duralumin conductive layer 3 outer surface, and described second trapezoidal conductive layer 5 is positioned at the first trapezoidal conductive layer 4 outer surface;
Described tension unit 1 comprises the aluminium lamination 8 by the stranded circular steel twisted wire 7 of some steel wires 6 and coated circular steel twisted wire 7 outer surface, is filled with polyester gluing filling part 9 in described aluminium lamination 8 between some steel wires 6;
To be that circular the first circular aluminum single line 21 is stranded by 10 ~ 14 cross sections form described first duralumin conductive layer 2, and to be that circular the second circular aluminum single line 31 is stranded by 16 ~ 20 cross sections form described second duralumin conductive layer 3;
To be that the first trapezoidal aluminium single line 41 of isosceles trapezoid is stranded by 19 ~ 21 cross sections form described first trapezoidal conductive layer 4, to be that the second trapezoidal aluminium single line 51 of isosceles trapezoid is stranded by 24 ~ 26 cross sections form second trapezoidal conductive layer 5, all having a cross section in the trapezoidal aluminium single line 51 of described first trapezoidal aluminium single line 41, second is circular copper conductor 10, and the sectional area of this copper conductor 10 is 35 ~ 45% of the sectional area of the trapezoidal aluminium single line 51 of the first trapezoidal aluminium single line 41, second.
The area of section of above-mentioned tension unit 1 accounts for the total cross-sectional area 11% of falling blast wire.
In above-mentioned first duralumin conductive layer 2, the first circular aluminum single line 21 direction of lay is dextrad, and in described second duralumin conductive layer 3, the second circular aluminum single line 31 direction of lay is left-hand.
The thickness of above-mentioned aluminium lamination 8 is 0.35mm; The diameter of described steel wire 6 is 14mm.
When adopting above-mentioned 800kV and above UHV transmission twisted wire, it reduces the effect of the AC impedance (resistance) that high order harmonic component produces, under the prerequisite not improving cross section, improve transmission line capability, original corridor does not change steel tower substantially, reaches increase-volume 68%, ampacity is large, quality is light, sag characteristic is good, extend the useful life of circuit, meet the requirement of modern power network large-capacity power transmission; Secondly, the wire that design is produced is extremely tight, and space availability ratio is up to 93%, and smooth surface, does not have concavo-convex, make wire windward surface area greatly reduce, produce and reduce wind effects.
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection range of the present utility model with this.All equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed within protection range of the present utility model.
Claims (4)
1. a 800kV and above UHV transmission twisted wire, it is characterized in that: comprise the tension unit (1) that is positioned at center and stranded the first duralumin conductive layer (2) in tension unit (1) outer surface, the second duralumin conductive layer (3), the first trapezoidal conductive layer (4) and the second trapezoidal conductive layer (5) successively, described first trapezoidal conductive layer (4) is positioned at the second duralumin conductive layer (3) outer surface, and described second trapezoidal conductive layer (5) is positioned at the first trapezoidal conductive layer (4) outer surface;
Described tension unit (1) comprises the aluminium lamination (8) by the stranded circular steel twisted wire (7) of some steel wires (6) and coated circular steel twisted wire (7) outer surface, is positioned between some steel wires (6) and is filled with polyester gluing filling part (9) in described aluminium lamination (8);
To be that circular the first circular aluminum single line (21) is stranded by 10 ~ 14 cross sections form described first duralumin conductive layer (2), and to be that circular the second circular aluminum single line (31) is stranded by 16 ~ 20 cross sections form described second duralumin conductive layer (3);
To be that the first trapezoidal aluminium single line (41) of isosceles trapezoid is stranded by 19 ~ 21 cross sections form described first trapezoidal conductive layer (4), to be that the second trapezoidal aluminium single line (51) of isosceles trapezoid is stranded by 24 ~ 26 cross sections form second trapezoidal conductive layer (5), all having a cross section in described first trapezoidal aluminium single line (41), the second trapezoidal aluminium single line (51) is circular copper conductor (10), the sectional area of this copper conductor (10) be the first trapezoidal aluminium single line (41), the second trapezoidal aluminium single line (51) sectional area 35 ~ 45%.
2. 800kV according to claim 1 and above UHV transmission twisted wire, is characterized in that: the area of section of described tension unit (1) accounts for the total cross-sectional area 9 ~ 12% of falling blast wire.
3. 800kV according to claim 1 and above UHV transmission twisted wire, it is characterized in that: in described first duralumin conductive layer (2), the first circular aluminum single line (21) direction of lay is dextrad, in described second duralumin conductive layer (3), the second circular aluminum single line (31) direction of lay is left-hand.
4. 800kV according to claim 1 and above UHV transmission twisted wire, is characterized in that: the thickness of described aluminium lamination (8) is 0.1 ~ 0.4mm; The diameter of described steel wire (6) is 10mm ~ 15mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520419849.2U CN204680405U (en) | 2015-06-17 | 2015-06-17 | 800kV and above UHV transmission twisted wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520419849.2U CN204680405U (en) | 2015-06-17 | 2015-06-17 | 800kV and above UHV transmission twisted wire |
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| Publication Number | Publication Date |
|---|---|
| CN204680405U true CN204680405U (en) | 2015-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520419849.2U Active CN204680405U (en) | 2015-06-17 | 2015-06-17 | 800kV and above UHV transmission twisted wire |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108565062A (en) * | 2018-03-13 | 2018-09-21 | 南方电网科学研究院有限责任公司 | High-voltage direct-current transmission conductor |
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2015
- 2015-06-17 CN CN201520419849.2U patent/CN204680405U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108565062A (en) * | 2018-03-13 | 2018-09-21 | 南方电网科学研究院有限责任公司 | High-voltage direct-current transmission conductor |
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