CN114909014A - Branch strain tower of alternating current-direct current hybrid power transmission line - Google Patents
Branch strain tower of alternating current-direct current hybrid power transmission line Download PDFInfo
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- CN114909014A CN114909014A CN202210586372.1A CN202210586372A CN114909014A CN 114909014 A CN114909014 A CN 114909014A CN 202210586372 A CN202210586372 A CN 202210586372A CN 114909014 A CN114909014 A CN 114909014A
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- 230000005540 biological transmission Effects 0.000 title claims abstract description 56
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 104
- 229910052742 iron Inorganic materials 0.000 claims abstract description 52
- 239000004020 conductor Substances 0.000 claims description 45
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/02—Structures made of specified materials
- E04H12/08—Structures made of specified materials of metal
- E04H12/10—Truss-like structures
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
- E04H12/24—Cross arms
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/02—Devices for adjusting or maintaining mechanical tension, e.g. take-up device
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/20—Spatial arrangements or dispositions of lines or cables on poles, posts or towers
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/60—Arrangements for transfer of electric power between AC networks or generators via a high voltage DC link [HVCD]
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Abstract
The invention relates to the technical field of power transmission towers, and particularly discloses a branch strain tower of an alternating-current and direct-current hybrid power transmission line, which comprises an iron tower, two groups of direct-current ground wire cross arms, two groups of direct-current lead cross arms, an alternating-current outer corner side ground wire cross arm and three groups of alternating-current lead cross arms, wherein the two groups of direct-current ground wire cross arms, the two groups of direct-current lead cross arms, the alternating-current outer corner side ground wire cross arms and the three groups of alternating-current lead cross arms are arranged on the iron tower; the three groups of alternating current lead cross arms comprise alternating current inner corner side ground wires and a middle phase lead cross arm which are positioned below the direct current lead cross arm, alternating current side phase lead cross arms second which are positioned below the alternating current inner corner side ground wires and the middle phase lead cross arm, and alternating current side phase lead cross arms first which are positioned on the same horizontal plane with the alternating current side phase lead cross arms second and positioned on one side of the alternating current side phase lead cross arms second, which is far away from the iron tower. The invention can effectively solve the problems of changing two single-circuit-erected direct-current transmission lines and alternating-current transmission lines into double-circuit-alternating-current and direct-current hybrid same-tower-erected transmission lines and changing alternating-current and direct-current hybrid same-tower-erected transmission lines into two single-circuit-erected direct-current transmission lines and alternating-current transmission lines.
Description
Technical Field
The invention relates to the technical field of power transmission towers, in particular to a branched tension tower of an alternating current-direct current hybrid power transmission line.
Background
In prior art, different transmission towers are erected for different transmission lines to meet the requirements of construction, the occupied area is greatly increased by adopting the mode, and different transmission lines cannot be erected under the condition that the corridor width of the dense channel of the alternating-current and direct-current transmission line is limited.
Disclosure of Invention
The invention aims to provide a branch tension tower of an alternating current and direct current hybrid transmission line, which can effectively solve the problems that two single-circuit erected direct current transmission lines and alternating current transmission lines are changed into double-circuit alternating current and direct current hybrid transmission lines erected on the same tower, and the alternating current and direct current hybrid transmission lines erected on the same tower are changed into two single-circuit erected direct current transmission lines and alternating current transmission lines.
The technical problem to be solved by the invention is as follows:
a branch strain tower of an alternating current and direct current hybrid transmission line comprises an iron tower, two groups of direct current ground wire cross arms arranged on the iron tower, two groups of direct current lead cross arms which are positioned below the direct current ground wire cross arms and arranged on the iron tower, alternating current outer corner side ground wire cross arms which are positioned below the direct current lead cross arms and arranged on the iron tower, and three groups of alternating current lead cross arms which are positioned below the direct current lead cross arms and arranged on the iron tower;
the three groups of alternating current lead cross arms comprise alternating current inner corner side ground wires and a middle phase lead cross arm which are positioned below the direct current lead cross arm, alternating current side phase lead cross arms second which are positioned below the alternating current inner corner side ground wires and the middle phase lead cross arm, and alternating current side phase lead cross arms first which are positioned on the same horizontal plane with the alternating current side phase lead cross arms second and positioned on one side of the alternating current side phase lead cross arms second, which is far away from the iron tower.
In some possible embodiments, the two sets of dc ground cross arms include a dc inner corner side ground cross arm and a dc outer corner side ground cross arm; the direct-current inner angle side ground wire cross arm and the direct-current outer angle side ground wire cross arm are both in a triangular structure or a combination of a triangular structure and a trapezoidal structure; the end parts of the two-way cable are respectively provided with a direct current outer angle side ground wire hanging point and a direct current inner angle side ground wire hanging point.
In some possible embodiments, the two sets of dc conductor cross arms include a dc inner corner side conductor cross arm and a dc outer corner side conductor cross arm which are respectively located right below the dc inner corner side ground conductor cross arm and the dc outer corner side ground conductor cross arm and on the same horizontal plane;
the direct-current inner angle side lead cross arm and the direct-current outer angle side lead cross arm have the same structure and comprise a first cross arm structure which is connected with the iron tower and is in a triangular structure, a first end hanging rack connected with the first cross arm structure, and a trapezoidal jumper wire frame connected with the first end hanging rack and the first cross arm structure at one end far away from the iron tower;
a direct current wire hanging point is arranged at the joint of the jumper wire rack, the end part hanging rack I and the cross arm structure I; and V-shaped jumper wire string hanging points are arranged at the end part of one side of the jumper wire rack, which is far away from the iron tower, and the joint of the cross arm structure I and the iron tower.
In some possible embodiments, the ac outside corner side ground cross-arm is in a triangular configuration; an alternating current outer corner side ground wire hanging point is arranged on a branch side of the end part of the alternating current outer corner side ground wire cross arm far away from one side of the iron tower; when the branch side alternating current outer corner side ground wire is also an optical cable, an alternating current outer corner side ground wire hanging point is arranged on the parallel erection side of the end part of the alternating current outer corner side ground wire cross arm far away from the iron tower;
when the branch side alternating current inner angle side ground wire is also used as the optical cable, alternating current outer angle side ground wire hanging points are also arranged on the front side and the rear side in the middle of the alternating current outer angle side ground wire cross arm.
In some possible embodiments, the alternating current inner corner side ground wire and the middle phase wire cross arm are provided with a hanging rack part at the end part of one side far away from the iron tower; the hanger part comprises a connecting structure and a jumper rack in a trapezoidal structure, wherein the connecting structure is sequentially connected with the end parts of the alternating-current inner corner side ground wire and the middle phase conductor cross arm at the side far away from the iron tower; the jumper wire rack comprises a trapezoidal structure connected with the connecting structure and a triangular structure connected with the trapezoidal structure at the branch side;
a branch side alternating current inner angle side ground wire hanging point and a parallel erection side alternating current middle phase wire hanging point are arranged at the corner part of the trapezoid structure; alternating current middle phase lead I-shaped jumper wire serial hanging points are arranged on one side of the triangular structure far away from the trapezoidal structure and one side of the trapezoidal structure far away from the triangular structure;
in some possible embodiments, a branch side alternating current middle phase conductor hanging point is further arranged below the alternating current inner corner side ground wire cross arm and the middle phase conductor cross arm and in the middle of the iron tower.
The branch side AC middle phase conductor hanging point is arranged in the middle of the tower body below the AC inner corner side ground wire and the middle phase conductor cross arm; and the branch side alternating current middle phase conductor is connected to the parallel erection sides of the alternating current inner corner side ground wire and the middle phase conductor cross arm through jumper wires.
In some possible embodiments, the first alternating-current side phase conductor cross arm and the second alternating-current side phase conductor cross arm are both in a triangular structure, and a side phase conductor hanging point and an I-type jumper string hanging point are arranged at the end of each cross arm.
In some possible embodiments, the iron tower comprises a tower head, a tower body and tower legs which are connected in sequence from top to bottom; the direct current ground wire cross arm is installed on the outer side of the tower head, and the direct current lead cross arm, the alternating current ground wire cross arm and the alternating current lead cross arm are installed on the outer side of the tower body.
Compared with the prior art, the invention has the beneficial effects that:
the invention can change two single-circuit direct current transmission lines and alternating current transmission lines in any directions into double-circuit alternating current and direct current hybrid transmission lines erected on the same tower; the power transmission line erected on the same tower by mixing alternating current and direct current can be changed into a single-circuit direct current power transmission line and an alternating current power transmission line which run in any direction.
The invention arranges the direct current leads at the branch side and the parallel erection side horizontally, arranges the alternating current leads at the branch side in a triangular shape, and arranges the alternating current leads at the parallel erection side in a Chinese character 'Shang' shape, thereby being capable of being matched with the power transmission lines with different erection modes at two sides conveniently.
The arrangement mode of the direct current and alternating current ground wires can provide good lightning protection for the single-loop direct current and alternating current transmission lines which are connected with the branch sides in a modified mode, and only the direct current ground wires are used as lightning protection wires on the parallel erection sides.
Drawings
FIG. 1 is a schematic structural diagram of a branch side of the present invention;
FIG. 2 is a schematic view of the structure of the parallel mounting side of the present invention;
FIG. 3 is a schematic diagram showing the connection relationship between the AC inner-angle side ground wire, the middle phase wire cross arm and the jumper wire rack;
FIG. 4 is a top view of FIG. 3;
wherein: 1. a direct current inner corner side ground wire cross arm; 11. a direct current inner corner side ground wire hanging point; 2. a direct current outer corner side ground wire cross arm; 21. a ground wire hanging point on the direct current outer corner side; 3. a direct current inner angle side wire cross arm; 31. a direct-current inner corner side jumper wire hanging point; 32. hanging points of direct-current inner-angle side wires; 4. the direct current outer corner side wire cross arm; 41. a direct-current outer corner side jumper wire hanging point; 42. a direct current outer corner side wire hanging point; 5. alternating current outer corner side ground wire cross arm; 51. an alternating current outer corner side ground wire hanging point; 6. alternating current inner corner side ground wires and a middle phase wire cross arm; 61. a branch side alternating current inner angle side ground wire hanging point; 62. an I-type jumper string hanging point of an alternating-current middle-phase conductor; 63. parallelly erecting side alternating current middle phase conductor hanging points; 7. the alternating current side phase conducting wire cross arm I; 8. a second alternating-current side-phase lead cross arm; 71. hanging a point I by a side phase wire; 81. a second side phase wire hanging point; 9. a tower head; 92. hanging points of phase conductors in the branch side alternating current; 10. a tower body; 101. tower legs; 601. a connection structure; 602. a trapezoidal configuration; 603. a triangular configuration.
Detailed Description
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; either directly or indirectly through intervening media, either internally or in any other relationship. Reference herein to "first," "second," and similar words, does not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Also, the use of the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one. In the implementation of the present application, "and/or" describes an association relationship of associated objects, which means that there may be three relationships, for example, a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. In the description of the embodiments of the present application, the meaning of "a plurality" means two or more unless otherwise specified. For example, the plurality of positioning posts refers to two or more positioning posts. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
The present invention will be described in detail below.
As shown in fig. 1-4:
a branch strain tower of an AC/DC hybrid transmission line comprises an iron tower, two groups of DC ground wire cross arms arranged on the iron tower, two groups of DC lead cross arms which are positioned below the DC ground wire cross arms and arranged on the iron tower, an AC outer corner side ground wire cross arm 5 which is positioned below the DC lead cross arms and arranged on the iron tower, and three groups of AC lead cross arms which are positioned below the DC lead cross arms and arranged on the iron tower;
the three groups of alternating current lead cross arms comprise alternating current inner corner side ground wires and a middle phase lead cross arm 6 which are positioned below the direct current lead cross arm, alternating current side phase lead cross arms II 8 which are positioned below the alternating current inner corner side ground wires and the middle phase lead cross arm 6, and alternating current side phase lead cross arms I7 which are positioned on the same horizontal plane with the alternating current side phase lead cross arms II 8 and are positioned on one side, far away from the iron tower, of the alternating current side phase lead cross arms II 8.
In some possible embodiments, the iron tower comprises a tower head 9, a tower body 10 and tower legs 101 which are connected in sequence from top to bottom; the direct-current ground wire cross arm is arranged on the outer side of the tower head 9, and the direct-current lead cross arm, the alternating-current ground wire cross arm and the alternating-current lead cross arm are arranged on the outer side of the tower body 10; the branch side ac phase conductor hanging point 92 is disposed on the branch side of the tower 10 and between the ac outer corner side ground wire cross arm 5 and the ac side phase conductor cross arm.
In some possible embodiments, the two sets of dc ground wires include a dc inner corner side ground wire cross arm 1 and a dc outer corner side ground wire cross arm 2; the direct-current inner angle side ground wire cross arm 1 and the direct-current outer angle side ground wire cross arm 2 can be of a triangular structure or a combination of a triangular structure and a trapezoidal structure, are specifically determined according to the lengths of the direct-current inner angle side ground wire cross arms and the direct-current outer angle side ground wire cross arms, and different structural forms are selected according to different lengths of the direct-current inner angle side ground wire cross arms and the direct-current outer angle side ground wire cross arms; and a direct current inner angle side ground wire hanging point 11 and a direct current outer angle side ground wire hanging point 21 are respectively arranged at the end parts of the direct current inner angle side ground wire cross arm 1 and the direct current outer angle side ground wire cross arm 2.
In some possible embodiments, the two sets of dc conductor cross arms include a dc inner corner side conductor cross arm 3 and a dc outer corner side conductor cross arm 4 which are respectively located right below the dc inner corner side ground wire cross arm 1 and the dc outer corner side ground wire cross arm 2 and on the same horizontal plane; the direct current inner corner side lead cross arm 3 and the direct current inner corner side ground lead cross arm 1 are arranged on the same side, and the direct current outer corner side ground lead cross arm 2 and the direct current outer corner side lead cross arm 4 are arranged on the same side.
In some possible embodiments, the direct current inside corner side wire cross arm 3 and the direct current outside corner side wire cross arm 4 have the same structure, and comprise a first cross arm structure which is connected with the iron tower and has a triangular structure, a first end hanging rack which is connected with the first cross arm structure, and a first end hanging rack and a first cross arm structure which are connected with a trapezoidal jumper frame at one end far away from the iron tower; and a wire hanging point is arranged at the joint of the jumper wire rack, the first end hanging rack and the first cross arm structure.
The wire hanging points include a direct current inner angle side wire hanging point 32 arranged on the direct current inner angle side wire cross arm 3 and a direct current outer angle side wire hanging point 42 arranged on the direct current outer angle side wire cross arm 4.
Furthermore, the connecting part of the end part of the first end part hanging rack and the first cross arm structure and the iron tower is respectively provided with a direct current V-shaped jumper hanging point which comprises a direct current inner angle side jumper hanging point 31 arranged on the direct current inner angle side lead cross arm 3 and a direct current outer angle side jumper hanging point 41 arranged on the direct current outer angle side lead cross arm 4.
In some possible embodiments, the ac outside corner side ground cross-arm 5 is in a triangular configuration; an ac outer corner side ground wire hanging point 51 is provided on a branch side of an end portion of the ac outer corner side ground wire cross arm 5 away from the iron tower.
When the grounding wire is used, an alternating current grounding wire is arranged at the hanging point 51 of the alternating current outer corner side grounding wire at the end part of the alternating current outer corner side grounding wire cross arm 5 far away from the iron tower at the branch side, and the grounding wire can be used as one lightning protection wire of an alternating current transmission line.
Further, when the branch side ac outer-angle-side ground wire doubles as an optical cable, an ac outer-angle-side ground wire hanging point 51 is provided on the parallel erection side of the end portion of the ac outer-angle-side ground wire cross-arm 5 on the side away from the iron tower, so that the ac optical cable is arranged on the parallel erection side.
Furthermore, when the branch side alternating current inner angle side ground wire is also used as the optical cable, alternating current outer angle side ground wire hanging points 51 are also arranged on the front side and the rear side in the middle of the alternating current outer angle side ground wire cross arm, and two alternating current outer angle side ground wire hanging points 51 are respectively arranged at corresponding positions of the branch side and the parallel erection side so as to lead the alternating current inner angle side optical cable to the alternating current outer angle side ground wire hanging points 51 for hanging; the distance between the ground wire hanging points 51 on the two alternating current outer angle sides on the parallel erection side meets the requirement of the line distance between the two optical cables in the shelves.
In some possible embodiments, the ac inner corner side ground wire and the middle phase wire cross arm 6 are provided with a hanger part at the end part of the side far away from the iron tower; the hanger part comprises a connecting structure 601 and a jumper wire rack in a trapezoidal structure, wherein the connecting structure 601 is sequentially connected with the end parts of the alternating current inner corner side ground wire and the middle phase conductor cross arm 6 at the side far away from the iron tower; the jumper rack comprises a ladder-shaped structure 602 connected with the connection structure, and a triangular structure 603 connected with the ladder-shaped structure 602 at the branch side.
A branch side of a corner part of the trapezoid structure 602 is provided with a branch side alternating current inner corner side ground wire hanging point 61, and another alternating current ground wire is arranged at the branch side, and the ground wire is also used as another lightning protection wire of the alternating current transmission line.
A parallel erection side alternating phase conductor hanging point 63 is arranged on the parallel erection side of the corner part of the trapezoid structure 602; an alternating current phase conductor I-shaped jumper wire serial hanging point 62 is arranged on one side of the triangular structure 603 far away from the trapezoidal structure 602 and one side of the trapezoidal structure 602 far away from the triangular structure 603;
a branch side alternating current inner angle side ground wire hanging point 61 and a parallel erection side alternating current middle phase conductor hanging point 63 are arranged at the corner part of the trapezoid structure 603; when the branch side alternating current inner angle side ground wire is also used as an optical cable, the branch side alternating current inner angle side ground wire is led to an alternating current outer angle side ground wire hanging point 51 in the middle of the alternating current outer angle side ground wire cross arm 5; an alternating current phase conductor I-shaped jumper wire serial hanging point 62 is arranged on one side of the triangular structure 603 far away from the trapezoidal structure 602 and one side of the trapezoidal structure 602 far away from the triangular structure 603;
the branch side alternating current middle phase conductor is connected to the parallel erection side hanging connection of the alternating current inner corner side ground wire and the middle phase conductor cross arm 6 through the jumper wire;
in some possible embodiments, a branch side alternating current middle phase conductor hanging point 92 is further arranged below the alternating current inner corner side ground wire cross arm and the middle phase conductor cross arm 6 and in the middle of the iron tower; the branch side alternating current middle phase conductor hanging point 92 is arranged in the middle of the tower body 10 below the alternating current inner corner side ground wire and the middle phase conductor cross arm 6; the branch side alternating current middle phase conductor is connected to the alternating current inner corner side ground wire and the parallel erection side of the middle phase conductor cross arm 6 through jumper wires.
In some possible embodiments, the ac side phase conductor cross arm one 7 and the ac side phase conductor cross arm two 8 are both triangular structures, and are respectively provided with a side phase conductor hanging point one 71 and a side phase conductor hanging point two 81 at the end parts thereof, and the jumper strings thereof are arranged in an I shape.
It should be noted that: in a hilly terrain, the tower legs 101 are arranged in a flat leg mode, and in a mountainous terrain, the middle tower legs 101 are arranged in an all-directional long-short leg mode; the steel tower in mountain area and the steel tower with small load on flat ground can adopt angle steel tower, and the steel pipe tower can be adopted in the area with good traffic and transportation conditions on flat ground for the steel tower with large load.
Furthermore, in order to ensure the rigidity of the iron tower, the cross sections of the tower body 10 with the gradient change, the cross sections directly subjected to torsion and the cross sections of the tower top and the connection between the tower legs 101 and the tower body 10 are provided with transverse partition surfaces, and the distance between two adjacent transverse partition surfaces in the section with the constant gradient is not more than five times of the average width of the two groups of transverse partition surfaces on average and is not suitable for being more than four main material sections.
The arrangement mode of the direct current and alternating current ground wires can provide good lightning protection for the single-loop direct current and alternating current transmission lines which are connected with the branch sides in a modified mode, and only the direct current ground wires are used as lightning protection wires on the parallel erection sides.
According to the invention, the direct current leads at the branch side and the parallel erection side are horizontally arranged, the alternating current leads at the branch side are triangularly arranged, and the alternating current leads at the parallel erection side are arranged in a shape like the Chinese character 'Shang', so that the power transmission line can be conveniently matched with power transmission lines with different erection modes at two sides; and calculating and analyzing the value of the pole distance of the bipolar direct current lead according to the inter-gear distance and the electromagnetic environment limit value, wherein the distance between all charged bodies and the iron tower meets the requirement of an electric gap.
The invention can change two single-circuit direct current transmission lines and alternating current transmission lines in any directions into double-circuit alternating current and direct current hybrid transmission lines erected on the same tower; the power transmission line erected on the same tower by mixing alternating current and direct current can be changed into a single-circuit direct current power transmission line and an alternating current power transmission line which run in any direction.
The structure of the cross arm of the alternating-current side-phase conductor is changed, so that the invention is suitable for the use of the power transmission line with small load in a light and medium ice area, large load in the light and medium ice area and large load in a heavy ice area;
when the cross arm of the alternating-current side-phase lead is in a triangular structure, the cross arm is suitable for a small-load power transmission line in a light and medium ice area;
when the cross arm of the alternating-current side-phase wire is of a triangular structure and the end part hanging frame is arranged at the end part of the triangular structure, the cross arm is suitable for a light-medium ice area large-load power transmission line;
when the cross arm of the alternating-current side-phase wire is of a trapezoidal structure, the cross arm is suitable for a heavy-load power transmission line in a heavy ice area.
The invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification and any novel method or process steps or any novel combination of features disclosed.
Claims (8)
1. A branch strain tower of an AC/DC hybrid transmission line is characterized by comprising an iron tower, two groups of DC ground wire cross arms arranged on the iron tower, two groups of DC lead cross arms positioned below the DC ground wire cross arms and arranged on the iron tower, AC outer corner side ground wire cross arms positioned below the DC lead cross arms and arranged on the iron tower, and three groups of AC lead cross arms positioned below the DC lead cross arms and arranged on the iron tower;
and the three groups of alternating current lead cross arms comprise alternating current inner corner side ground wires and a middle phase lead cross arm which are positioned below the direct current lead cross arm, alternating current side phase lead cross arms second positioned below the alternating current inner corner side ground wires and the middle phase lead cross arm, and alternating current side phase lead cross arms first positioned on the same horizontal plane with the alternating current side phase lead cross arms second and positioned on one side, far away from the iron tower, of the alternating current side phase lead cross arms second.
2. The branch strain tower of the AC/DC hybrid power transmission line according to claim 1, wherein the two sets of DC ground wire cross arms comprise a DC inner corner side ground wire cross arm and a DC outer corner side ground wire cross arm; the direct-current inner angle side ground wire cross arm and the direct-current outer angle side ground wire cross arm are both in a triangular structure or a combination of a triangular structure and a trapezoidal structure; the end parts of the two-way cable are respectively provided with a direct current outer angle side ground wire hanging point and a direct current inner angle side ground wire hanging point.
3. The branch tension tower of the AC/DC hybrid power transmission line according to claim 2, wherein the two sets of DC wire cross arms comprise a DC inner corner side wire cross arm and a DC outer corner side wire cross arm which are respectively positioned under the DC inner corner side wire cross arm and the DC outer corner side wire cross arm and are positioned on the same horizontal plane; the direct-current inner angle side lead cross arm and the direct-current outer angle side lead cross arm have the same structure and comprise a first cross arm structure which is connected with the iron tower and is in a triangular structure, a first end hanging rack connected with the first cross arm structure, and a trapezoidal jumper wire frame connected with the first end hanging rack and the first cross arm structure at one end far away from the iron tower; a direct current wire hanging point is arranged at the joint of the jumper wire rack, the end part hanging rack I and the cross arm structure I; and V-shaped jumper wire string hanging points are arranged at the end part of one side of the jumper wire rack, which is far away from the iron tower, and the connection part of the cross arm structure I and the iron tower.
4. The branch strain tower of the AC-DC hybrid power transmission line according to claim 3, wherein the AC outer corner side ground wire cross arm is in a triangular structure; and an alternating current outer corner side ground wire hanging point is arranged on the branch side of the end part of the alternating current outer corner side ground wire cross arm far away from the iron tower.
5. The branch tension tower of the alternating current-direct current hybrid transmission line according to claim 4, wherein the ends of the alternating current inner corner side ground wire and the middle phase conductor cross arm far away from the iron tower are provided with hanging frame components; the hanger part comprises a connecting structure and a jumper rack in a trapezoidal structure, wherein the connecting structure is sequentially connected with the end parts of the alternating-current inner corner side ground wire and the middle phase conductor cross arm at the side far away from the iron tower;
the jumper wire rack comprises a trapezoidal structure connected with the connecting structure and a triangular structure connected with the trapezoidal structure at the branch side;
a branch side alternating current inner angle side ground wire hanging point and a parallel erection side alternating current middle phase wire hanging point are arranged at the corner part of the trapezoid structure; and alternating current middle phase lead I-shaped jumper string hanging points are arranged on one side of the triangular structure far away from the trapezoidal structure and one side of the trapezoidal structure far away from the triangular structure.
6. The branch tension tower of the alternating current and direct current hybrid power transmission line according to claim 5, wherein a branch side alternating current neutral conductor hanging point is further arranged at a position between the lower part of the alternating current inner corner side ground wire cross arm and the middle position of the neutral conductor cross arm and the iron tower.
7. The branch tension tower of the AC-DC hybrid power transmission line according to claim 6, wherein the first AC side phase lead cross arm and the second AC side phase lead cross arm are both triangular structures, and a side phase lead hanging point and an I-type jumper string hanging point thereof are arranged at the end of each cross arm.
8. The branch tension tower of the alternating current and direct current hybrid power transmission line according to any one of claims 1 to 7, wherein the iron tower comprises a tower head, a tower body and tower legs which are sequentially connected from top to bottom; the direct current ground wire cross arm is installed on the outer side of the tower head, and the direct current lead cross arm, the alternating current ground wire cross arm and the alternating current lead cross arm are installed on the outer side of the tower body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210586372.1A CN114909014B (en) | 2022-05-27 | 2022-05-27 | Branch strain tower of alternating current-direct current hybrid transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210586372.1A CN114909014B (en) | 2022-05-27 | 2022-05-27 | Branch strain tower of alternating current-direct current hybrid transmission line |
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| JP2014045597A (en) * | 2012-08-28 | 2014-03-13 | Furukawa Electric Co Ltd:The | Overhead wire construction method for branch steel tower and temporary jumper device |
| CN105155908A (en) * | 2015-08-31 | 2015-12-16 | 国核电力规划设计研究院 | Heavy icing area alternating current strain tower in shape like Chinese character 'gan' |
| CN205882640U (en) * | 2016-08-15 | 2017-01-11 | 中国电力工程顾问集团西北电力设计院有限公司 | 800kV direct current exchanges with tower wire arrangement structure with two 750kV that return |
| CN210918436U (en) * | 2019-07-20 | 2020-07-03 | 桐庐富力电力器材有限公司 | Strenghthened type cross arm device for power transmission line |
| CN111411813A (en) * | 2019-08-28 | 2020-07-14 | 国家电网有限公司 | High-altitude ultrahigh voltage AC/DC test strain tower |
| CN211974573U (en) * | 2020-01-02 | 2020-11-20 | 中国电力工程顾问集团华东电力设计院有限公司 | Direct-current mixed-voltage multi-loop branch tower and alternating-current mixed-voltage multi-loop branch tower |
| CN212614030U (en) * | 2020-06-24 | 2021-02-26 | 中国电力工程顾问集团华北电力设计院有限公司 | Transmission line tangent tower of 500kV double-loop alternating current and +/-500 kV direct current common tower line |
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| CN201674193U (en) * | 2010-05-07 | 2010-12-15 | 中国电力工程顾问集团中南电力设计院 | Single loop edge phase jumper wire overwind strain tower |
| CN202090662U (en) * | 2010-12-30 | 2011-12-28 | 国家电网公司 | Alternating current extra-high voltage same-tower and dual-loop strain tower |
| JP2014045597A (en) * | 2012-08-28 | 2014-03-13 | Furukawa Electric Co Ltd:The | Overhead wire construction method for branch steel tower and temporary jumper device |
| CN105155908A (en) * | 2015-08-31 | 2015-12-16 | 国核电力规划设计研究院 | Heavy icing area alternating current strain tower in shape like Chinese character 'gan' |
| CN205882640U (en) * | 2016-08-15 | 2017-01-11 | 中国电力工程顾问集团西北电力设计院有限公司 | 800kV direct current exchanges with tower wire arrangement structure with two 750kV that return |
| CN210918436U (en) * | 2019-07-20 | 2020-07-03 | 桐庐富力电力器材有限公司 | Strenghthened type cross arm device for power transmission line |
| CN111411813A (en) * | 2019-08-28 | 2020-07-14 | 国家电网有限公司 | High-altitude ultrahigh voltage AC/DC test strain tower |
| CN211974573U (en) * | 2020-01-02 | 2020-11-20 | 中国电力工程顾问集团华东电力设计院有限公司 | Direct-current mixed-voltage multi-loop branch tower and alternating-current mixed-voltage multi-loop branch tower |
| CN212614030U (en) * | 2020-06-24 | 2021-02-26 | 中国电力工程顾问集团华北电力设计院有限公司 | Transmission line tangent tower of 500kV double-loop alternating current and +/-500 kV direct current common tower line |
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| CN114909014B (en) | 2024-04-05 |
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