Overhead conductor

Abstract

The utility model relates to the technical field of overhead transmission lines, in particular to an overhead conductor. The overhead conductor comprises a core body and a first conductive layer, the core body is coated with the first conductive layer, a plurality of guide grooves are formed in the face, away from the core body, of the first conductive layer, the guide grooves are sequentially arranged at intervals in the axis direction of the core body, and a first included angle is formed between the extending direction of the guide grooves and the axis direction of the core body. According to the overhead conductor provided by the invention, the deicing effect can be realized, and the safety of power transmission is ensured.

Description

Technical Field

[0001] This application relates to the field of overhead transmission line technology, and in particular to an overhead conductor. Background Technology

[0002] Freezing rain or low temperatures can cause raindrops or water vapor to form ice layers such as rime or hoarfrost on the surface of overhead transmission lines, increasing the load on the lines and potentially causing accidents such as tower collapse, line breakage, and flashover, posing safety hazards.

[0003] In existing technologies, impact load de-icing is used to address the problem of ice buildup on power transmission lines. Impact load de-icing involves using drones or robots to strike the surface of the power transmission line, causing it to vibrate significantly and thus removing the ice layer adhering to the line.

[0004] However, existing methods for dealing with icing can easily damage transmission lines during the de-icing process, thereby increasing the risk of short circuits and leakage, and reducing the safety of power transmission. Utility Model Content

[0005] This application provides an overhead conductor that can achieve de-icing and ensure the safety of power transmission.

[0006] The overhead conductor provided in this application includes a core and a first conductive layer. The first conductive layer covers the outside of the core. The side of the first conductive layer facing away from the core has a plurality of guide grooves. The plurality of guide grooves are arranged sequentially at intervals along the axial direction of the core, and the extension direction of the guide grooves has a first angle with the axial direction of the core.

[0007] In one possible implementation, the overhead conductor provided in this application has two inclined walls of the guide groove, with the distance between the two walls gradually decreasing from the bottom of the guide groove towards the opening of the guide groove.

[0008] In one possible implementation, the overhead conductor provided in this application has two symmetrically arranged trench walls, and the second included angle between the trench wall and the trench bottom is greater than or equal to 30° and less than or equal to 75°.

[0009] In one possible implementation, the overhead conductor provided in this application has a trench bottom width greater than or equal to 100 micrometers and less than or equal to 200 micrometers.

[0010] In one possible implementation, the overhead conductor provided in this application has a guide groove with a depth greater than or equal to 90 micrometers and less than or equal to 120 micrometers.

[0011] In one possible implementation, the overhead conductor provided in this application has a first conductive layer comprising a plurality of conductive monofilaments, which are spirally wound along the axial direction of the core, with adjacent conductive monofilaments abutting against each other; each conductive monofilament has a plurality of guide grooves on the side facing away from the core.

[0012] In one possible implementation, the overhead conductor provided in this application has a spacing between two adjacent guide slots on the same conductive monofilament that is greater than or equal to 2.5 cm and less than or equal to 3.5 cm.

[0013] In one possible implementation, the overhead conductor provided in this application has guide slots evenly spaced on the same conductive monofilament.

[0014] In one possible implementation, the overhead conductor provided in this application has a conductive monofilament that is one of hard aluminum wire, aluminum-magnesium-silicon alloy wire, and aluminum-zirconium alloy wire.

[0015] The core is one of galvanized steel core, aluminum-clad steel core, and aluminum-clad Invar steel core.

[0016] In one possible implementation, the overhead conductor provided in this application further includes at least one second conductive layer, which is disposed between the core and the first conductive layer.

[0017] The overhead conductor provided in this application comprises a core and a first conductive layer. The first conductive layer covers the outside of the core and has multiple guide grooves on the side facing away from the core. These guide grooves are spaced apart sequentially along the axial direction of the core. The guide grooves guide the directional growth of ice crystals, generating internal stress within the ice layer. This internal stress weakens the bond between the ice layer and the first conductive layer, causing micro-cracks to form in the ice layer and leading to its automatic peeling. The extension direction of the guide grooves forms a first angle with the axial direction of the core. During the directional growth of ice crystals, the overhead conductor undergoes eccentric rotation, causing the ice layer to detach, thus achieving a de-icing effect without damaging the overhead conductor and ensuring the safety of power transmission. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 Schematic diagram of the structure of the overhead conductor provided in the embodiments of this application Figure 1 ;

[0020] Figure 2 for Figure 1 A partial structural diagram of a conductive monofilament;

[0021] Figure 3 Schematic diagram of the structure of the overhead conductor provided in the embodiments of this application Figure 2 ;

[0022] Figure 4 for Figure 3 Enlarged structural diagram of part A.

[0023] Explanation of reference numerals in the attached figures:

[0024] 100-core;

[0025] 200 - First conductive layer;

[0026] 201 - Conductive monofilament;

[0027] 210 - Guide groove;

[0028] 211 - Tank wall;

[0029] 212 - Bottom of the trough;

[0030] 213 - Groove;

[0031] 300 - Second conductive layer.

[0032] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0033] First, those skilled in the art should understand that these embodiments are merely for explaining the technical principles of this application and are not intended to limit the scope of protection of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0034] Secondly, it should be noted that, in the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] Furthermore, it should be noted that in the description of this application, the terms "upper," "lower," "front," "back," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0037] As shown in the background section, existing technologies address the problem of ice buildup on power transmission lines by using impact load de-icing. Impact load de-icing involves using drones or robots to strike the surface of the power transmission line, causing it to vibrate significantly and thus removing the ice layer adhering to the line.

[0038] However, existing methods for dealing with icing can easily damage transmission lines during the de-icing process, thereby increasing the risk of short circuits and leakage, and reducing the safety of power transmission.

[0039] Based on this, the overhead conductor provided in this application, by setting a core and a first conductive layer, with the first conductive layer covering the outside of the core, has multiple guide grooves on the side of the first conductive layer facing away from the core. These guide grooves are arranged sequentially and at intervals along the axial direction of the core. The guide grooves guide the directional growth of ice crystals, generating internal stress within the ice layer. This internal stress weakens the bond strength between the ice layer and the first conductive layer, causing micro-cracks in the ice layer and its automatic peeling. The extension direction of the guide grooves forms a first angle with the axial direction of the core. During the directional growth of the ice crystals, the overhead conductor undergoes eccentric rotation, causing the ice layer to detach, thereby achieving a de-icing effect without damaging the overhead conductor and ensuring the safety of power transmission.

[0040] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, of the embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0041] Reference Figure 1 and Figure 2 As shown, the overhead conductor provided in this application includes a core 100 and a first conductive layer 200. The first conductive layer 200 covers the outside of the core 100. The side of the first conductive layer 200 facing away from the core 100 has a plurality of guide grooves 210. The plurality of guide grooves 210 are arranged sequentially at intervals along the axial direction of the core 100, and the extension direction of the guide grooves 210 has a first angle with the axial direction of the core 100.

[0042] Specifically, the core 100 provides high tensile strength to withstand the weight of the overhead conductor, wind loads, and mechanical loads such as icing, ensuring structural stability. The outer first conductive layer 200 is responsible for transmitting current, utilizing its conductivity to reduce line losses while also reducing overall weight.

[0043] It should be noted that the side of the first conductive layer 200 facing away from the core 100 is the surface of the first conductive layer 200. By setting multiple guide grooves 210 on the surface of the first conductive layer 200, the guide grooves 210 restrict the spatial degree of freedom of crystal growth through geometric constraints. After the crystal nucleus is formed at the bottom of the guide groove 210, the ice crystal is forced to grow directionally along the length direction of the guide groove 210 because the space in the width and depth directions is blocked by the groove wall 211 of the guide groove 210.

[0044] Meanwhile, due to the volume expansion during ice crystal growth and the difference in thermal expansion between different crystal orientations, which cannot be freely released within the confined space of the guide groove 210, significant compressive and shear stresses will be generated inside the ice layer. These internal stresses will continuously accumulate and weaken the bonding strength between the ice layer and the first conductive layer 200. When the stress exceeds the critical value, microcracks will be generated at the interface and propagate, eventually leading to the automatic peeling of the ice layer.

[0045] It should also be noted that when ice crystals grow directionally along the extension direction (i.e., the length direction) of the guide groove 210, the expansion stress of the ice crystals decomposes into two components: one component along the axial direction of the core 100, and the other component along the radial direction of the core 100. Because there is a first angle between the extension direction of the guide groove 210 and the axial direction of the core 100, the torques of the two components of the expansion stress of the ice crystals are unbalanced, forming an asymmetric shear stress field on the surface of the first conductive layer 200. This causes the overhead conductor to rotate eccentrically, prompting the ice layer to peel off from the guide groove 210, thus achieving the de-icing effect. Furthermore, this eliminates the need to strike the surface of the transmission line, preventing damage to the overhead conductor and ensuring the safety of power transmission.

[0046] In some embodiments, refer to Figure 3 and Figure 4 As shown, the two groove walls 211 of the guide groove 210 are inclined, and the distance between the two groove walls 211 gradually decreases from the bottom 212 of the guide groove 210 toward the opening 213 of the guide groove 210.

[0047] It should be noted that the two walls 211 of the guide groove 210 are inclined, which can limit the growth of ice crystals in the depth direction of the guide groove 210. Specifically, the ice crystals expand in volume during the freezing process, and the inclined sidewalls of the guide groove 210 will exert a lateral compressive force on the ice crystals, forcing the ice crystals to extend along the length direction of the guide groove 210, rather than accumulating along the depth direction of the guide groove 210.

[0048] Meanwhile, as the bottom 212 of the guide groove 210 faces the opening 213 of the guide groove 210, the distance between the two groove walls 211 gradually decreases, that is, the width of the guide groove 210 gradually decreases. The mechanical constraint on the ice crystals as they grow upward is enhanced, resulting in a decrease in the contact area between the ice crystals and the groove wall 211, a weakening of the adhesion, and ultimately, easier peeling from the interface under the action of expansion stress.

[0049] In addition, the distance between the two groove walls 211 gradually decreases, which can guide the ice crystals to grow longitudinally along the length direction of the low-resistance guide groove 210, and convert some of the expansion stress into a peeling force perpendicular to the interface through the inclined groove wall 211, further suppressing the accumulation of ice layer in the height direction, thereby effectively controlling the ice thickness and promoting automatic de-icing.

[0050] In some embodiments, refer to Figure 3 and Figure 4 As shown, the two tank walls 211 are symmetrically arranged, and the second included angle between the tank wall 211 and the tank bottom 212 is greater than or equal to 30° and less than or equal to 75°.

[0051] It should be noted that the two walls 211 of the guide groove 210 are symmetrically arranged, which can ensure that the lateral extrusion force on the ice layer during growth is uniform, and avoid the ice layer from piling up on one side due to asymmetrical stress, thereby maintaining the stable shedding of the ice layer.

[0052] At the same time, when the ice crystals expand, the two symmetrical groove walls 211 can make the constraint force on the ice crystals symmetrical, preventing local stress concentration from causing uneven ice layer fracture.

[0053] It should also be noted that if the second included angle between the tank wall 211 and the tank bottom 212 is too small (close to horizontal), the contact area between the ice layer and the tank wall 211 will be too large, the adhesion will be enhanced, and the ice layer will be difficult to fall off.

[0054] If the second included angle between the tank wall 211 and the tank bottom 212 is close to vertical, the ice layer is likely to accumulate rapidly along the tank wall 211, resulting in excessively thick ice and affecting the de-icing effect.

[0055] Therefore, the second included angle between the tank wall 211 and the tank bottom 212 is greater than or equal to 30° and less than or equal to 75°, which can guide the ice layer to grow along the length direction of the guide tank 210, rather than accumulating along the depth direction of the guide tank 210, thus balancing the adhesion and peeling force of the ice layer and making it easier for the ice layer to fall off.

[0056] For example, the second included angle between the tank wall 211 and the tank bottom 212 can be 30°, 45°, 60° or 75°, or any value between 30° and 75°. This application embodiment does not impose too many restrictions on this.

[0057] In some embodiments, refer to Figure 4 As shown, the width of the bottom of the tank 212 is greater than or equal to 100 micrometers and less than or equal to 200 micrometers.

[0058] It should be noted that if the bottom 212 of the guide groove 210 is too narrow, ice crystals may quickly fill the bottom 212, losing its function of guiding the ice layer to grow along its length and instead promoting vertical accumulation. Furthermore, if the bottom 212 is too narrow, it may exceed the range of machining accuracy, affecting the structural stability and durability of the guide groove 210.

[0059] If the bottom 212 of the guide groove 210 is too wide, the ice layer will lack sufficient lateral restraint when it grows freely at the bottom, making it easy to form a thick ice layer and increasing the difficulty of ice removal. Moreover, an excessively wide bottom 212 will increase the contact area between the ice layer and the bottom 212, enhancing adhesion and making the ice layer more difficult to remove.

[0060] Therefore, the width of the bottom 212 is greater than or equal to 100 micrometers and less than or equal to 200 micrometers, which can accommodate the initial ice crystal growth and ensure that the sidewalls of the guide groove 210 can apply sufficient compressive force, so that the ice layer grows along the extension direction of the guide groove 210 rather than expanding freely. This balances the adhesion force and the peeling force, making the ice layer easy to detach.

[0061] For example, the width of the bottom of the groove 212 can be 100 micrometers, 150 micrometers or 200 micrometers, or any value between 100 micrometers and 200 micrometers. This application embodiment does not impose too many restrictions on this.

[0062] In some embodiments, the width of the opening 213 of the guide groove 210 is greater than or equal to 50 micrometers and less than or equal to 80 micrometers. Specifically, the width of the opening 213 of the guide groove 210 can be 50 micrometers, 60 micrometers, 70 micrometers or 80 micrometers, or any value between 50 micrometers and 80 micrometers. This application embodiment does not impose too many restrictions on this.

[0063] In some embodiments, refer to Figure 3 As shown, the depth of the guide groove 210 is greater than or equal to 90 micrometers and less than or equal to 120 micrometers.

[0064] It should be noted that if the guide groove 210 is too deep, it will provide more space for the ice layer to grow freely. This may cause the ice layer to accumulate at the bottom and continue to grow at the top, weakening the effect of guiding the ice layer to grow along the length of the guide groove 210, resulting in an excessively thick ice layer and increasing the difficulty of ice removal.

[0065] If the depth of the guide groove 210 is too shallow, it cannot provide sufficient lateral restraint, and the ice layer may directly cover the groove opening 213, forming a planar ice film instead of extending along the groove.

[0066] Therefore, the depth of the guide groove 210 is greater than or equal to 90 micrometers and less than or equal to 120 micrometers, which can effectively guide the ice layer to grow along the length of the guide groove 210 rather than to accumulate vertically, thereby reducing the adhesion of the ice layer and promoting its natural shedding. At the same time, it avoids the ice layer becoming too thick or the structural strength decreasing due to the guide groove 210 being too deep, and the guide groove 210 failing to provide sufficient lateral restraint force due to the guide groove 210 being too shallow.

[0067] For example, since the groove depth can be 90 micrometers, 100 micrometers, 110 micrometers or 120 micrometers, or any value between 90 micrometers and 120 micrometers, the embodiments of this application do not impose too many restrictions on this.

[0068] In some embodiments, refer to Figure 1 and Figure 2As shown, the first conductive layer 200 includes a plurality of conductive single filaments 201, which are spirally wound along the axial direction of the core 100, and two adjacent conductive single filaments 201 abut against each other; each conductive single filament 201 has a plurality of guide grooves 210 on the side facing away from the core 100.

[0069] Specifically, the helically wound conductive monofilaments 201 abutting each other can form a continuous conductive path, improving current transmission efficiency and reducing resistance. At the same time, the helical structure can enhance the flexibility and tensile strength of the wire.

[0070] It should be noted that each conductive monofilament 201 has multiple guide grooves 210 on the side facing away from the core 100. The guide grooves 210 can guide the ice layer to grow along the extension direction (length direction) of the guide grooves 210, which can reduce the adhesion of ice and make it easier to fall off under wind or vibration, thereby improving the anti-icing performance of overhead conductors in cold environments.

[0071] In some embodiments, refer to Figure 2 As shown, the distance between two adjacent guide grooves 210 located on the same conductive monofilament 201 is greater than or equal to 2.5 cm and less than or equal to 3.5 cm.

[0072] It should be noted that the spacing between two adjacent guide grooves 210 on the same conductive monofilament 201 is greater than or equal to 2.5 cm. This prevents the groove spacing from being too small, thus avoiding a decrease in the mechanical strength of the conductive monofilament 201 and affecting the tensile and fatigue resistance of the wire. Furthermore, it reduces the processing difficulty and avoids local overheating or uneven current distribution caused by excessively thin material between the grooves.

[0073] The spacing between two adjacent guide grooves 210 located on the same conductive monofilament 201 is less than or equal to 3.5 cm, which can ensure that the ice layer is constrained by enough guide grooves 210 during ice growth, and avoid the ice layer from expanding freely due to excessive groove spacing, thus reducing the anti-icing effect.

[0074] For example, the spacing between two adjacent guide grooves 210 located on the same conductive monofilament 201 can be 2.5 cm, 3 cm or 3.5 cm, or any value between 2.5 cm and 3.5 cm. This application embodiment does not impose too many restrictions on this.

[0075] In some embodiments, refer to Figure 2 As shown, the guide grooves 210 located on the same conductive monofilament 201 are evenly spaced.

[0076] Understandably, the guide grooves 210 located on the same conductive monofilament 201 are set at uniform intervals, which can avoid the problem that the local groove spacing is too large, resulting in the ice layer being too thick and difficult to peel off, or the groove spacing is too small, which weakens the mechanical strength of the conductive monofilament 201.

[0077] Meanwhile, the evenly spaced guide slots 210 facilitate manufacturing and processing, ensuring the stability and reliability of overhead conductors during long-term operation, while also taking into account anti-icing performance and conductivity.

[0078] In some embodiments, refer to Figure 1 As shown, the conductive monofilament 201 is one of hard aluminum wire, aluminum-magnesium-silicon alloy wire, and aluminum-zirconium alloy wire.

[0079] The core 100 is one of galvanized steel core, aluminum-clad steel core, and aluminum-clad Invar steel core.

[0080] It should be noted that the conductive monofilament 201 is made of one of the following: hard aluminum wire, aluminum-magnesium-silicon alloy wire, or aluminum-zirconium alloy wire, which can balance conductivity, mechanical strength, and heat resistance. Among them, hard aluminum wire has a lower cost but slightly weaker strength, aluminum-magnesium-silicon alloy wire has better tensile strength, and aluminum-zirconium alloy wire is suitable for high-temperature environments to improve creep resistance.

[0081] The core 100 is made of one of galvanized steel, aluminum-clad steel, or aluminum-clad Invar cores, providing necessary mechanical support and tensile strength. Galvanized steel cores are economical and durable, aluminum-clad steel cores reduce hysteresis losses and improve corrosion resistance, and aluminum-clad Invar cores have a low coefficient of thermal expansion, making them suitable for power transmission scenarios with large spans or significant temperature differences. In specific implementations, the number of cores 100 can be one or more; this application does not impose excessive limitations on this.

[0082] In this way, while ensuring the conductivity of overhead conductors, mechanical strength and environmental adaptability can be optimized.

[0083] In some embodiments, refer to Figure 1 and Figure 3 As shown, the overhead conductor also includes at least one second conductive layer 300, which is disposed between the core 100 and the first conductive layer 200.

[0084] Specifically, at least one second conductive layer 300 is added between the core 100 and the outermost first conductive layer 200. The second conductive layer 300 can optimize current distribution, reduce AC resistance, and enhance the mechanical strength of the overhead conductor. Exemplarily, the number of second conductive layers 300 can be one or more, and this application embodiment does not impose excessive limitations on this.

[0085] In a specific implementation, the second conductive layer 300 includes a plurality of conductive single filaments 201, which are spirally wound along the axial direction of the core 100, and two adjacent conductive single filaments 201 abut against each other to jointly form the second conductive layer 300.

[0086] In some embodiments, the spacing between two adjacent guide grooves 210 located on the same conductive monofilament 201 is 2.5 cm, the width of the groove opening 213 of the guide groove 210 is 80 micrometers, and the depth of the guide groove 210 is 120 micrometers. In practical applications, when the temperature is below -5°C, after rainwater comes into contact with the surface of the first conductive layer 200, ice crystals will grow directionally along the extension direction of the guide groove 210 due to the guiding effect of the guide groove 210, generating internal stress. When the wind speed reaches 6 m / s, the ice will automatically peel off, and because there is a first angle between the extension direction of the guide groove 210 and the axial direction of the core 100, the overhead conductor will rotate eccentrically, further accelerating the ice sliding off.

[0087] In some embodiments, the distance between two adjacent guide grooves 210 on the same conductive monofilament 201 is 3 cm, the width of the groove opening 213 of the guide groove 210 is 50 micrometers, and the depth of the guide groove 210 is 100 micrometers. In practical applications, when the temperature is below 0°C, after rainwater comes into contact with the surface of the first conductive layer 200, due to the guiding effect of the guide grooves 210, ice crystals will grow directionally along the extension direction of the guide grooves 210, generating internal stress. When the wind speed reaches 5 m / s, the ice will automatically peel off, and because there is a first angle between the extension direction of the guide grooves 210 and the axial direction of the core 100, the overhead conductor will rotate eccentrically, further accelerating the ice sliding off.

[0088] In some embodiments, the distance between two adjacent guide grooves 210 on the same conductive monofilament 201 is 3.5 cm, the width of the groove opening 213 of the guide groove 210 is 70 micrometers, and the depth of the guide groove 210 is 90 micrometers. In practical applications, when the temperature is below -3°C, after rainwater comes into contact with the surface of the first conductive layer 200, due to the guiding effect of the guide grooves 210, ice crystals will grow directionally along the extension direction of the guide grooves 210, generating internal stress. When the wind speed reaches 4 m / s, the ice will automatically peel off, and because there is a first angle between the extension direction of the guide grooves 210 and the axial direction of the core 100, the overhead conductor will rotate eccentrically, further accelerating the ice sliding off.

[0089] Those skilled in the art will understand that the overhead conductor provided in this application, by setting a core 100 and a first conductive layer 200, with the first conductive layer 200 covering the outside of the core 100, has multiple guide grooves 210 on the side of the first conductive layer 200 facing away from the core 100, and the multiple guide grooves 210 are arranged sequentially at intervals along the axial direction of the core 100. The guide grooves 210 guide the directional growth of ice crystals, so as to generate internal stress inside the ice layer. The internal stress can weaken the bonding strength between the ice layer and the first conductive layer 200, so as to cause micro-cracks in the ice layer and automatic peeling off. The extension direction of the guide grooves 210 has a first angle with the axial direction of the core 100. When the ice crystals grow in a directional manner, the overhead conductor will rotate eccentrically, causing the ice layer to fall off, thereby achieving the de-icing effect without damaging the overhead conductor and ensuring the safety of power transmission.

[0090] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0091] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application.

[0092] The technical solutions of this application have been described above with reference to the preferred embodiments shown in the accompanying drawings. However, it will be readily understood by those skilled in the art that the scope of protection of this application is obviously not limited to these specific embodiments. Without departing from the principles of this application, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will all fall within the scope of protection of this application.

Claims

1. An overhead conductor, characterized in that, include: Core (100); A first conductive layer (200) is covered on the outside of the core (100), and the side of the first conductive layer (200) facing away from the core (100) has a plurality of guide grooves (210). The plurality of guide grooves (210) are arranged sequentially at intervals along the axial direction of the core (100), and the extension direction of the guide grooves (210) has a first included angle with the axial direction of the core (100).

2. The overhead conductor according to claim 1, characterized in that, The two walls (211) of the guide groove (210) are inclined and the distance between the two walls (211) gradually decreases from the bottom (212) of the guide groove (210) toward the opening (213) of the guide groove (210).

3. The overhead conductor according to claim 2, characterized in that, The two groove walls (211) are symmetrically arranged, and the second included angle between the groove wall (211) and the groove bottom (212) is greater than or equal to 30° and less than or equal to 75°.

4. The overhead conductor according to claim 2, characterized in that, The width of the bottom of the groove (212) is greater than or equal to 100 micrometers and less than or equal to 200 micrometers.

5. The overhead conductor according to claim 1, characterized in that, The guide groove (210) has a groove depth greater than or equal to 90 micrometers and less than or equal to 120 micrometers.

6. The overhead conductor according to any one of claims 1 to 5, characterized in that, The first conductive layer (200) includes a plurality of conductive monofilaments (201), which are spirally wound along the axial direction of the core (100), and two adjacent conductive monofilaments (201) abut against each other. Each of the conductive monofilaments (201) has a plurality of guide grooves (210) on the side facing away from the core (100).

7. The overhead conductor according to claim 6, characterized in that, The spacing between two adjacent guide grooves (210) located on the same conductive monofilament (201) is greater than or equal to 2.5 cm and less than or equal to 3.5 cm.

8. The overhead conductor according to claim 6, characterized in that, The guide grooves (210) located on the same conductive monofilament (201) are evenly spaced.

9. The overhead conductor according to claim 6, characterized in that, The conductive monofilament (201) is one of hard aluminum wire, aluminum-magnesium-silicon alloy wire, and aluminum-zirconium alloy wire. The core (100) is one of galvanized steel core, aluminum-clad steel core and aluminum-clad Invar steel core.

10. The overhead conductor according to any one of claims 1 to 5, characterized in that, It also includes at least one second conductive layer (300), which is disposed between the core (100) and the first conductive layer (200).

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