Anti-galloping device for conductor of overhead transmission line

Abstract

The utility model relates to the technical field of overhead transmission lines, and provides an overhead transmission line lead anti-galloping device, which comprises an anti-galloping wire clamp, and the anti-galloping wire clamp comprises a first winding section, a connecting section and a second winding section which are arranged in sequence. The first winding section is spirally wound on the outer side surface of the main wire along the length direction of the main wire of the overhead transmission line, and the second winding section is spirally wound on the outer side surface of the jumper wire along the length direction of the jumper wire of the overhead transmission line; the anti-galloping wire clamp comprises a plurality of pre-twisted wires, and the plurality of pre-twisted wires are sequentially constructed into a spiral first winding section, a cylindrical connecting section and a spiral second winding section along the length direction of the anti-galloping wire clamp. The length of the anti-galloping wire clamp is long enough, no stress is concentrated when the anti-galloping wire clamp is fixed on the main wire and the jumper wire, the anti-galloping wire clamp, the strain wire clamp and the drainage wire clamp form a stable triangular structure, and the swing amplitude of the main wire at the clamping opening of the strain wire clamp and the swing amplitude of the jumper wire at the clamping opening of the drainage wire clamp are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to overhead transmission line technical field especially, relates to an overhead transmission line conductor anti-dancing device. BACKGROUND

[0002] When the wind blows on the overhead transmission line, a certain air power is produced, and a low-frequency, large-amplitude self-excitation oscillation of about 0.1~3Hz is easily induced in the line, which is characterized by only one or a few half-waves in a span in vibration form, and is called dancing. Dancing is extremely harmful to the overhead transmission line, and can cause line flashover, tripping, tower bolt loosening and falling, and even damage of fittings and insulators, breaking of the conductor, and even tower collapse, thus leading to major power grid accidents. Therefore, it is necessary to take certain anti-dancing measures. SUMMARY

[0003] The utility model provides an overhead transmission line conductor anti-dancing device to solve the problem that the existing anti-dancing device cannot effectively eliminate the line dancing when the weather condition is very bad.

[0004] The utility model provides an overhead transmission line conductor anti-dancing device, comprising:

[0005] The anti-dancing clamp comprises a first winding section, a connecting section and a second winding section arranged in sequence, the first winding section is spirally wound on the outer side of the main conductor along the length direction of the overhead transmission line, and the second winding section is spirally wound on the outer side of the jumper wire along the length direction of the overhead transmission line; wherein the anti-dancing clamp comprises a plurality of pre-stranded wires, which are sequentially structured as the first winding section in a spiral shape, the connecting section in a cylindrical shape and the second winding section in a spiral shape along the length direction of the anti-dancing clamp.

[0006] The overhead transmission line comprises a strain clamp and a current lead clamp arranged at an angle, the strain clamp is used for clamping the free end of the main conductor, and the current lead clamp is used for clamping the free end of the jumper wire; a first distance is left between the connecting position of the first winding section and the connecting section and the clamping opening of the strain clamp, and a second distance is left between the connecting position of the second winding section and the connecting section and the clamping opening of the current lead clamp; the connecting section is arranged in an arc shape, and the bending direction of the connecting section is away from the joint of the strain clamp and the current lead clamp.

[0007] The projection length of the first winding section on the main conductor is 0.8m~1.2m along the length direction of the main conductor, and the projection length of the second winding section on the jumper wire is 0.5m~1m along the length direction of the jumper wire.

[0008] According to the overhead transmission line conductor anti-dancing device, the first distance is 0.5m-0.8m.

[0009] According to the overhead transmission line conductor anti-dancing device, the second distance is 0.5m-0.8m.

[0010] According to the overhead transmission line conductor anti-dancing device, the curvature radius of the connecting section is greater than or equal to 700mm and less than or equal to 1100mm.

[0011] According to the overhead transmission line conductor anti-dancing device, the spiral inner surface of the first winding section is adhered with conductive sand; and / or,

[0012] The spiral inner surface of the second winding section is adhered with conductive sand.

[0013] According to the overhead transmission line conductor anti-dancing device, the inner diameter of the first winding section is less than the outer diameter of the main conductor, and the inner diameter of the second winding section is less than the outer diameter of the jumper wire.

[0014] According to the overhead transmission line conductor anti-dancing device, the inner diameter of the first winding section is equal to the inner diameter of the second winding section, the outer diameter of the main conductor is not equal to the outer diameter of the jumper wire, and the outer side surface of the one with smaller outer diameter between the main conductor and the jumper wire is provided with a wire protection strip, so that the outer diameter of the main conductor is equal to the outer diameter of the jumper wire.

[0015] According to the overhead transmission line conductor anti-dancing device, each of the pre-stranded wires comprises a plurality of metal wires, and each of the metal wires is configured in a spiral shape.

[0016] According to the overhead transmission line conductor anti-dancing device, each of the metal wires is made of aluminum alloy.

[0017] According to the overhead transmission line conductor anti-dancing device, each of the metal wires has opposite first and second ends, and the shapes of the first and second ends are duckbill-shaped, conical or spherical.

[0018] The anti-dancing wire clamp is wound around the main conductor wire and the jumper wire at two ends, and the anti-dancing wire clamp, the strain clamp and the current lead clamp form a stable triangular structure, so that the swing range of the main conductor wire at the clamp opening of the strain clamp and the jumper wire at the clamp opening of the current lead clamp is reduced. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0020] Figure 1 is a structural schematic view of the anti-dancing wire clamp provided by the present application.

[0021] Figure 2 is one of the structural schematic views of the anti-dancing device for overhead transmission line conductor provided by the present application.

[0022] Figure 3 is the second structural schematic view of the anti-dancing device for overhead transmission line conductor provided by the present application.

[0023] Figure 4 is an assembly schematic view of the strain clamp and the current lead clamp provided by the present application.

[0024] Reference signs:

[0025] 1, anti-dancing wire clamp; 11, first winding section; 12, connecting section; 13, second winding section; 2, main conductor wire; 3, jumper wire; 4, strain clamp; 5, current lead clamp; 6, current lead plate; 7, steel anchor. DETAILED DESCRIPTION

[0026] In order to make the purpose, technical scheme and advantages of the present application more clear, the technical scheme of the present application will be described clearly and completely in combination with the drawings in the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor belong to the scope of protection of the present application.

[0027] In the description of the embodiments of the utility model, it needs to explain, the term "center", "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and so on indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawing, just for the convenience of describing the embodiments of the utility model and simplifying the description, and it is not indicated or implied that the device or element indicated must have a particular orientation, a particular orientation and operation, therefore it cannot be understood as the limitation of the embodiments of the utility model. In addition, the terms "first", "second", "third" are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0028] In the description of the embodiments of the utility model, it needs to explain, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected, it can be mechanically connected, or it can be electrically connected, it can be directly connected, or it can be indirectly connected through an intermediate medium. For ordinary skilled in the art, the specific meaning of the above terms in the embodiments of the utility model can be understood according to the specific circumstances.

[0029] In the embodiments of the utility model, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact between the first and second features, or indirect contact between the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" of the second feature can be directly above or obliquely above the first feature, or just indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" of the second feature can be directly below or obliquely below the first feature, or just indicate that the horizontal height of the first feature is less than that of the second feature.

[0030] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the embodiments of the utility model. In the specification, the illustrative description of the above terms is not necessarily for the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of different embodiments or examples without contradiction.

[0031] As Figure 4As shown, the overhead transmission line includes a strain clamp 4, a current lead clamp 5, a current lead plate 6, and a steel anchor 7. One end of the strain clamp 4 is provided with a clamp opening for clamping the main conductor 2, and the other end of the strain clamp 4 is provided with the steel anchor 7 for connecting with the tower, for example, the steel anchor 7 is connected with the tower through an insulator string, the strain clamp 4 is provided with the current lead plate 6, the current lead clamp 5 is connected with the current lead plate 6, for example, the current lead clamp 5 is connected with the current lead plate 6 through a bolt, and one end of the current lead clamp 5 away from the current lead plate 6 is provided with a clamp opening for clamping the jumper wire 3.

[0032] Therefore, after the overhead transmission line occurs the galloping, the main conductor 2 at the clamp opening of the strain clamp 4 and the jumper wire 3 at the clamp opening of the current lead clamp 5 will appear the fatigue broken wire condition, in addition, the strain clamp 4, the current lead clamp 5, the current lead plate 6 and the like are prone to deformation and fracture. At present, for the newly built overhead transmission line, the scheme of reinforcing the strain clamp 4, the current lead clamp 5 and the current lead plate 6 is generally adopted, but there is still no good solution for the anti-galloping fatigue of the main conductor 2 and the jumper wire 3.

[0033] In order to solve the above problems, as shown in Figure 1 , Figure 2 and Figure 3 , the utility model discloses an overhead transmission line conductor anti-galloping device, which comprises: an anti-galloping clamp 1.

[0034] Among them, the anti-galloping clamp 1 includes first winding section 11, connecting section 12 and second winding section 13 arranged in sequence, first winding section 11 is helically wound on the outer side of main conductor 2 along the length direction of main conductor 2 of overhead transmission line, second winding section 13 is helically wound on the outer side of jumper wire 3 along the length direction of jumper wire 3 of overhead transmission line.

[0035] In practical application, the anti-galloping clamp 1 includes a plurality of pre-stranded wires, and the plurality of pre-stranded wires are sequentially structured as the first winding section 11 in the shape of a spiral, the connecting section 12 in the shape of a cylinder and the second winding section 13 in the shape of a spiral along the length direction of the anti-galloping clamp 1.

[0036] It should be noted that the anti-galloping clamp 1 is pre-manufactured to have the first winding section 11 in the shape of a spiral, the connecting section 12 in the shape of a cylinder and the second winding section 13 in the shape of a spiral, the first winding section 11 is formed with a first accommodating space extending along the length direction thereof, and the second winding section 13 is formed with a second accommodating space extending along the length direction thereof, so that the connection of the first winding section 11 and the main conductor 2 can be completed during installation, and then the free end of the main conductor 2 is installed in the clamp opening of the strain clamp 4. Similarly, the connection of the second winding section 13 and the jumper wire 3 is completed first, and then the free end of the jumper wire 3 is installed in the clamp opening of the current lead clamp 5. Moreover, the connecting section 12 in the shape of a cylinder is equivalent to a rope, which increases the rigidity of the connecting section 12 and reduces the occupied space of the spiral pre-stranded wire.

[0037] Specifically, as shown in Figure 2 , Figure 3 and Figure 4 , the overhead transmission line comprises a strain clamp 4 and a current lead clamp 5 arranged at an angle, the strain clamp 4 is used to clamp the free end of the main conductor 2, and the current lead clamp 5 is used to clamp the free end of the jumper 3; the connection between the first winding section 11 and the connection section 12 is left with a first distance from the clamping opening of the strain clamp 4, and the connection between the second winding section 13 and the connection section 12 is left with a second distance from the clamping opening of the current lead clamp 5.

[0038] It should be noted that the connection between the first winding section 11 and the connection section 12 is left with a first distance from the clamping opening of the strain clamp 4, and the connection between the second winding section 13 and the connection section 12 is left with a second distance from the clamping opening of the current lead clamp 5, so that the connection section 12 can be ensured not to touch at least one of the strain clamp 4 and the current lead clamp 5, in other words, a certain activity space can be provided for the connection section 12.

[0039] For example, the first distance is 0.5m~0.8m, for example, the first distance is 0.5m, 0.6m, 0.7m or 0.8m, and the second distance is 0.5m~0.8m, for example, the second distance is 0.5m, 0.6m, 0.7m or 0.8m.

[0040] In addition, as shown in Figure 2 , Figure 3 and Figure 4 , the connection section 12 is arranged in an arc shape, and the bending direction of the connection section 12 is away from the intersection of the strain clamp 4 and the current lead clamp 5.

[0041] It should be noted that the connection section 12 is in a curved state, so that in the case of conductor galloping, the connection section 12 will deform to absorb the energy of the swing.

[0042] It should be noted that the connection between the first winding section 11 and the connection section 12 is left with a first distance from the clamping opening of the strain clamp 4, and the connection between the second winding section 13 and the connection section 12 is left with a second distance from the clamping opening of the current lead clamp 5, which can provide sufficient activity space for the connection section 12, and can prevent the arc-shaped connection section 12 from colliding with the strain clamp 4 and the current lead clamp 5 in the case of conductor galloping.

[0043] In addition, the connection between the first winding section 11 and the connection section 12 is left with a first distance from the clamping opening of the strain clamp 4, and the connection between the second winding section 13 and the connection section 12 is left with a second distance from the clamping opening of the current lead clamp 5, which can make the force generated by the conductor be transmitted to the connection section 12 as soon as possible, thereby better protecting the strain clamp 4 and the current lead clamp 5.

[0044] In the embodiment of the utility model, the length of the anti-dancing wire clamp 1 is long enough, there is no stress concentration when being fixed on the main conductor 2 and the jumper wire 3, the main conductor 2 at the clamping opening of the strain clamp 4 and the jumper wire 3 at the clamping opening of the current lead clamp 5 can be well protected, the slight wind vibration at the clamping opening of the wire clamp is reduced, so that the strain clamp 4 and the main conductor 2 are not loose, and the current lead clamp 5 and the jumper wire 3 are not loose, in addition, the two ends of the anti-dancing wire clamp 1 are separately wound on the main conductor 2 and the jumper wire 3, the anti-dancing wire clamp 1, the strain clamp 4 and the current lead clamp 5 form a stable triangular structure, and the swing range of the main conductor 2 at the clamping opening of the strain clamp 4 and the jumper wire 3 at the clamping opening of the current lead clamp 5 is reduced.

[0045] As shown in Figure 2 and Figure 3 As shown in the length direction of the main conductor 2, the projection length of the first winding section 11 on the main conductor 2 is 0.8m~1.2m; and / or, as shown in the length direction of the jumper wire 3, the projection length of the second winding section 13 on the jumper wire 3 is 0.5m~1m.

[0046] It should be noted that the projection length of the first winding section 11 on the main conductor 2 meets certain conditions, which can ensure that the first winding section 11 has sufficient contact area with the main conductor 2, so as to ensure that there is no stress concentration between the first winding section 11 and the main conductor 2, for example, the projection length of the first winding section 11 on the main conductor 2 is 0.8m, 0.9m, 1m or 1.2m.

[0047] Similarly, the projection length of the second winding section 13 on the jumper wire 3 meets certain conditions, which can ensure that the second winding section 13 has sufficient contact area with the jumper wire 3, so as to ensure that there is no stress concentration between the second winding section 13 and the jumper wire 3, for example, the projection length of the second winding section 13 on the jumper wire 3 is 0.5m, 0.7m, 0.9m or 1m.

[0048] It should be noted that in order to ensure that the first winding section 11 has sufficient contact area with the main conductor 2, in addition to the projection length of the first winding section 11 on the main conductor 2 meeting certain conditions, the pitch of the first winding section 11, the outer diameter of the first winding section 11 and other factors also need to be considered, for example, the number of pitches is 3~5, and the pitch is less than or equal to 0.3m.

[0049] Similarly, in order to ensure that the second winding section 13 has sufficient contact area with the jumper wire 3, in addition to the projection length of the second winding section 13 on the jumper wire 3 meeting certain conditions, the pitch of the second winding section 13, the outer diameter of the second winding section 13 and other factors also need to be considered, for example, the number of pitches is 3~4, and the pitch is less than or equal to 0.3m.

[0050] In some embodiments, the radius of curvature of the connecting segment 12 is greater than or equal to 700 mm and less than or equal to 1100 mm.

[0051] It should be noted that the size of the radius of curvature directly reflects the bending degree of the curve at a point. The greater the radius of curvature, the smaller the bending degree of the curve at the point, i.e., the curve is closer to a straight line; on the contrary, the smaller the radius of curvature, the greater the bending degree of the curve at the point, i.e., the curve is steeper. The radius of curvature of the connecting segment 12 can be 700 mm, 800 mm, 900 mm, 1000 mm, and 1100 mm.

[0052] The radius of curvature of the connecting segment 12 is in the range of 700 mm to 1100 mm, which can ensure the arc-shaped arrangement of the connecting segment 12 and avoid the connecting segment 12 from colliding with the strain clamp 4 and the drain clamp 5 during movement.

[0053] In some embodiments, the connecting segment 12 can further include multiple arc units, and the bending direction of each arc unit is away from the intersection of the strain clamp 4 and the drain clamp 5. In this way, the ability to absorb the energy of the swing can be further improved.

[0054] In some embodiments, the spiral inner surface of the first winding segment 11 is adhered with conductive sand; and / or,

[0055] The spiral inner surface of the second winding segment 13 is adhered with conductive sand.

[0056] It should be noted that the spiral inner surface of the first winding segment 11 is sprayed with conductive sand, which can reduce the contact resistance between the first winding segment 11 and the main conductor 2, and can increase the holding force between the first winding segment 11 and the main conductor 2. Similarly, the spiral inner surface of the second winding segment 13 is sprayed with conductive sand, which can reduce the contact resistance between the second winding segment 13 and the jumper 3, and can increase the holding force between the second winding segment 13 and the jumper 3.

[0057] In some embodiments, the inner diameter of the first winding segment 11 is smaller than the outer diameter of the main conductor 2, and the inner diameter of the second winding segment 13 is smaller than the outer diameter of the jumper 3.

[0058] Exemplarily, as Figure 2As shown, the outer diameter of the main conductor 2 is equal to the outer diameter of the jumper 3, and the inner diameter of the first winding section 11 is smaller than the outer diameter of the main conductor 2. In the case that the first winding section 11 is spirally wound on the outer side surface of the main conductor 2, the first winding section 11 can be elastically deformed to make the spiral inner surface of the first winding section 11 tightly contact with the outer side surface of the main conductor 2. Similarly, the inner diameter of the second winding section 13 is smaller than the outer diameter of the jumper 3. In the case that the second winding section 13 is spirally wound on the outer side surface of the jumper 3, the second winding section 13 can be elastically deformed to make the spiral inner surface of the second winding section 13 tightly contact with the outer side surface of the jumper 3.

[0059] In some embodiments, in order to adapt to different working conditions, such as Figure 3 As shown, the inner diameter of the first winding section 11 is equal to the inner diameter of the second winding section 13, and the outer diameter of the main conductor 2 is not equal to the outer diameter of the jumper 3. The outer side surface of the one with smaller outer diameter between the main conductor 2 and the jumper 3 is provided with a wire protection strip, so that the outer diameter of the main conductor 2 is equal to the outer diameter of the jumper 3.

[0060] For example, the outer diameter of the main conductor 2 is smaller than the outer diameter of the jumper 3. Thus, the wire protection strip is spirally wound on the outer side surface of the main conductor 2, so that the outer diameter of the main conductor 2 is equal to the outer diameter of the jumper 3.

[0061] In some embodiments, each pre-stranded wire includes a plurality of metal wires, each of which is configured to be spiral. For example, the anti-dancing clamp 1 includes 3-4 pre-stranded wires, and each pre-stranded wire includes a plurality of metal wires.

[0062] In some embodiments, each metal wire is made of aluminum alloy.

[0063] It should be noted that each metal wire is made of aluminum alloy, which can avoid the generation of magnetic hysteresis eddy current when wound on the conductor, thereby causing heating. In addition, the metal wire is made of aluminum alloy, which has good current carrying capacity, thereby reducing the heating of the strain clamp 4, the current lead clamp 5 and the current lead plate 6. Moreover, the anti-dancing clamp 1 can be used as a backup conductor. Even if a fault occurs between the main conductor 2, the strain clamp 4, the current lead plate 6, the current lead clamp 5 and the jumper 3, the overhead transmission line will not lose current carrying capacity.

[0064] In some embodiments, each metal wire has opposite first and second ends, and the first and second ends are in the shape of a duckbill, a cone or a sphere.

[0065] It should be noted that in order to avoid discharge, the end of each metal wire can be designed in various shapes. Exemplarily, a conical or conical design can make the electric field distribution more uniform, reduce the concentration of electric field intensity at the end, and thus reduce the risk of discharge. The spherical or hemispherical end design also helps to evenly distribute the electric field and reduce the situation of excessive local electric field intensity. With a rectangular design with rounded or chamfered corners, the sharp part of the end can be reduced while maintaining a certain structural strength, reducing the possibility of discharge.

[0066] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent substitutions for part of the technical features; and these modifications or substitutions do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A device for preventing conductor galloping in overhead transmission lines, characterized in that, include: The anti-galloping clamp (1) includes a first winding section (11), a connecting section (12), and a second winding section (13) arranged in sequence. The first winding section (11) is spirally wound around the outer side of the main conductor (2) of the overhead transmission line along the length direction of the main conductor (2). The second winding section (13) is spirally wound around the outer side of the jumper (3) of the overhead transmission line along the length direction of the jumper (3). The anti-galloping clamp (1) includes multiple pre-twisted wires, which are sequentially constructed as a spiral first winding section (11), a cylindrical connecting section (12), and a spiral second winding section (13) along the length direction of the anti-galloping clamp (1). The overhead transmission line includes a tension clamp (4) and a drain clamp (5) arranged at an angle. The tension clamp (4) is used to clamp the free end of the main conductor (2), and the drain clamp (5) is used to clamp the free end of the jumper (3). A first distance is left between the connection point of the first winding section (11) and the connection section (12) and the clamping point of the tension clamp (4), and a second distance is left between the connection point of the second winding section (13) and the connection section (12) and the clamping point of the drain clamp (5). The connection section (12) is arc-shaped, and the bending direction of the connection section (12) is away from the junction of the tension clamp (4) and the drain clamp (5). Along the length direction of the main line (2), the projection length of the first winding segment (11) on the main line (2) is 0.8m to 1.2m; along the length direction of the jumper (3), the projection length of the second winding segment (13) on the jumper (3) is 0.5m to 1m.

2. The anti-galloping device for overhead transmission line conductors according to claim 1, characterized in that, The first distance is 0.5m to 0.8m.

3. The anti-galloping device for overhead transmission line conductors according to claim 1, characterized in that, The second distance is 0.5m to 0.8m.

4. The anti-galloping device for overhead transmission line conductors according to claim 1, characterized in that, The radius of curvature of the connecting segment (12) is greater than or equal to 700 mm and less than or equal to 1100 mm.

5. The anti-galloping device for overhead transmission line conductors according to any one of claims 1 to 4, characterized in that, The inner spiral surface of the first winding segment (11) is adhered with conductive sand; and / or, The inner spiral surface of the second winding section (13) is coated with conductive sand.

6. The anti-galloping device for overhead transmission line conductors according to any one of claims 1 to 4, characterized in that, The inner diameter of the first winding segment (11) is smaller than the outer diameter of the main guide wire (2), and the inner diameter of the second winding segment (13) is smaller than the outer diameter of the jumper wire (3).

7. The anti-galloping device for overhead transmission line conductors according to claim 6, characterized in that, The inner diameter of the first winding segment (11) is equal to the inner diameter of the second winding segment (13). The outer diameter of the main guide line (2) is not equal to the outer diameter of the jumper line (3). A protective line is provided on the outer side of the smaller outer diameter of the main guide line (2) and the jumper line (3) so that the outer diameter of the main guide line (2) is equal to the outer diameter of the jumper line (3).

8. The anti-galloping device for overhead transmission line conductors according to any one of claims 1 to 4, characterized in that, Each of the pre-twisted wires comprises a plurality of metal wires, each of which is configured in a spiral shape.

9. The anti-galloping device for overhead transmission line conductors according to claim 8, characterized in that, Each of the aforementioned metal wires is made of aluminum alloy.

10. The anti-galloping device for overhead transmission line conductors according to claim 8, characterized in that, Each of the metal wires has a first end and a second end, the first end and the second end being in the shape of a duckbill, a cone or a sphere.

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