CN112186700B - Lightning protection method for power transmission line - Google Patents
Lightning protection method for power transmission line Download PDFInfo
- Publication number
- CN112186700B CN112186700B CN202011029410.0A CN202011029410A CN112186700B CN 112186700 B CN112186700 B CN 112186700B CN 202011029410 A CN202011029410 A CN 202011029410A CN 112186700 B CN112186700 B CN 112186700B
- Authority
- CN
- China
- Prior art keywords
- lightning protection
- cable
- supporting bodies
- base band
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
- H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
- H02G13/40—Connection to earth
-
- 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
-
- 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
- H02G7/22—Arrangements of earthing wires suspended between mastheads
Landscapes
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The invention belongs to the technical field of electric power, and particularly relates to a lightning protection method for a power transmission line, which is characterized in that a lightning protection part is arranged outside a cable, the cable is fixed on a span, and the span is fixedly arranged on an electric power tower erected on the ground; the lightning protection component is provided with a base band layer, a plurality of supporting bodies and a conductive belt, wherein the supporting bodies extend upwards from the upper surface of the base band layer, the conductive belt is adhered or stuck on the lower surface of the supporting bodies, the upper surface of each supporting body is a part of the surface of a cylinder, and adjacent supporting bodies are not in contact with each other; the lightning protection part forms the cylinder structure and makes the supporter be located inside the cylinder through the coiling when using, and all supporter upper surfaces are on same face of cylinder and the diameter of the circle that this face of cylinder corresponds slightly is less than the external diameter of cable. The invention has the following main beneficial effects: the structure is simple, the cost is low, the implementation is easy, the construction is easy, the lightning protection effect is good, the electromagnetic shielding performance is excellent, the snow and rain prevention effect is excellent, and the snow melting and ice melting effects are excellent.
Description
Technical Field
The invention belongs to the technical field of electric power, and particularly relates to a lightning protection method for a power transmission line.
Background
Electric power is an indispensable resource in modern society, China is wide in land, complex in terrain, different in weather distribution, and in areas with much thunder, and after lightning strikes to outdoor cables or power transmission lines, the cables are broken or protective devices are damaged, so that the supply of the electric power is stopped. If the cable is broken, the cable needs to be replaced, so that time and labor are wasted, and the price of the cable is high; if the damaged protection device is the protection device, only the protection device needs to be replaced, and the relative maintenance time is short. The suspension of power supply not only brings inconvenience to users, but also causes considerable loss of unused power of power supply companies during the suspension of supply, so that lightning protection is one of important target tasks of power departments, and until now, a great deal of research is carried out in the industry and a better effect is achieved.
CN211508546U discloses lightning protection device for power transmission line, including lightning-arrest wire, wire fixer, line pole, earth connection and thunder leading device, one side fixed mounting of line pole has the earth connection, one side fixed mounting at earth connection top has the wire fixer, the top fixed mounting of wire fixer has lightning-arrest wire, lightning-arrest wire's front fixed mounting has discharge apparatus, one side fixed mounting that the wire fixer was kept away from at the earth connection top has thunder leading device, the regulation pole is installed through the knob to the one end of stabilizer bar, the top fixed mounting of regulation pole has the receiving terminal. It can be effectual with the wire and the ground wire separation of bottom of top through the insulator that is provided with to when having avoided line fault, the electric current passes through the wire that the ground wire transmitted the top, leads to the lightning-arrest wire at top electrified, thereby arouses the problem of incident, the effectual security that improves the device.
CN211428884U discloses a transmission line lightning protection device, belongs to transmission line technical field. The utility model provides a transmission line lightning protection device, includes compound insulating column, arrester, disconnector, ground connection support, wiring support and iron tower cross arm, and compound insulating column upper end is connected with the wiring support left end through the resistance to compression subassembly, and the resistance to compression subassembly includes the damping box, and two end symmetries are equipped with two buffer bases about the damping box, and the inside balancing weight that is equipped with of damping box, balancing weight left and right sides both ends symmetry are equipped with two spring posts, and the spring post outside cover is equipped with spring A. It is through setting up the resistance to compression subassembly between compound insulation post and wiring support, utilizes the damping effect of resistance to compression subassembly for this device has the shock-absorbing capacity of resistance when suffering the thunderbolt, avoids the rigid connection of compound insulation post and wiring support to lead to the breakage of compound insulation post.
CN111477397A discloses a mobile lightning-protection down-lead isolation cable for military equipment and a production process thereof, wherein the cable comprises a self-bearing high-frequency drainage cable core, an insulating layer, a copper-plastic composite belt layer and a sheath which are sequentially arranged from inside to outside; the self-bearing high-frequency drainage cable core comprises a fixed core rod, a self-bearing metal strand and an embedded metal strand; the fixed core rod is made of a high-elasticity TPV (thermoplastic vulcanizate) elastomer material; the fixed mandrel includes a body and a partition. According to the invention, the metal strand wires are isolated and dispersed by the fixed core rod, and a uniform cylindrical integral structure is formed by winding the semi-conductive belt, so that the skin effect of lightning current is avoided, the metal consumption is effectively reduced while the current discharge capacity is met, the contact area between the metal strand wires is increased, the friction force between the metal strand wires and the metal strand wires is increased, the bearing stress capacity of the metal strand wires is improved, the problems that the cable has a large outer diameter and cannot be quickly wound and unwound are solved, and the cable is convenient to move and use.
However, most of the lightning protection in the prior art is developed from protection devices and protection components, and the common lightning protection schemes such as lightning rods, lightning arresters, insulators, grounding wires, grounding clamps, hardware fittings and the like are quite few for cables or power transmission lines, and a lightning protection cable disclosed in CN1240047A adopts a choke conductor to realize lightning protection leakage, which can cause instant heating of a cable body to cause burnout.
Disclosure of Invention
In order to solve the above problems, the present invention discloses a lightning protection method for a power transmission line, which is implemented by the following technical scheme.
A method of lightning protection of an electric transmission line, characterized in that a lightning protection component is mounted outside a cable, the cable being fixed on a span, the span being fixed on a power tower erected on the ground; the lightning protection component is provided with a base band layer, a plurality of supporting bodies and a conductive belt, wherein the supporting bodies extend upwards from the upper surface of the base band layer, the conductive belt is adhered or stuck on the lower surface of the base band layer, the upper surface of each supporting body is a part of the surface of a cylinder, and adjacent supporting bodies are not in contact with each other; the lightning protection part forms the cylinder structure and makes the supporter be located inside the cylinder through the coiling when using, and all supporter upper surfaces are on same face of cylinder and the diameter of the circle that this face of cylinder corresponds slightly is less than the external diameter of cable.
A lightning protection method for a transmission line is characterized in that a lightning protection component is arranged outside a cable, the cable is fixed on a cross-cut which is fixedly arranged on a power tower erected on the ground; the lightning protection component is provided with a base band layer, a plurality of supporting bodies and conductive strips, wherein the base band layer and the conductive strips are all in circular cylinder structures, the supporting bodies extend inwards from the inner surface of the base band layer, the conductive strips are bonded or adhered to the outer surface of the base band layer, the upper surfaces of the supporting bodies are part of the surface of a cylinder, the adjacent supporting bodies are not in contact with each other, and the upper surfaces of all the supporting bodies are on the same cylindrical surface; when the cable is placed, the cable penetrates into a hole formed in the upper surface of the support body of the lightning protection component, and the support body clamps the cable.
A lightning protection method for a transmission line is characterized in that a lightning protection component is arranged outside a cable, the cable is fixed on a cross-cut which is fixedly arranged on a power tower erected on the ground; the lightning protection component is provided with a base band layer, a plurality of supporting bodies and a conductive belt, wherein the supporting bodies extend upwards from the upper surface of the base band layer, the conductive belt is adhered or stuck on the lower surface of the supporting bodies, the upper surface of each supporting body is a part of the surface of a cylinder, and adjacent supporting bodies are not in contact with each other; the lightning protection part forms the cylinder structure and makes the supporter be located inside the cylinder through the coiling when using, and all supporter upper surfaces are on same face of cylinder and the diameter of the circle that this face of cylinder corresponds slightly is less than the external diameter of cable, have a plurality of through-holes on the supporter.
A lightning protection method for a transmission line is characterized in that a lightning protection component is arranged outside a cable, the cable is fixed on a cross-cut which is fixedly arranged on a power tower erected on the ground; the lightning protection component is provided with a base belt layer, a plurality of supporting bodies, a conductive belt and an outer protection layer, wherein the base belt layer, the conductive belt and the outer protection layer are all in a circular cylinder structure, the supporting bodies extend inwards from the inner surface of the base belt layer, the conductive belt is bonded or adhered to the outer surface of the base belt layer, the upper surface of each supporting body is a part of the surface of a cylinder, the adjacent supporting bodies are not in contact with each other, the upper surfaces of all the supporting bodies are on the same cylindrical surface, and the outer protection layer is covered outside the conductive belt in a plastic protection mode; when the cable is placed, the cable penetrates into a hole formed in the upper surface of the support body of the lightning protection component, and the support body clamps the cable.
A lightning protection method for a transmission line is characterized in that a lightning protection component is arranged outside a cable, the cable is fixed on a cross-cut which is fixedly arranged on a power tower erected on the ground; the lightning protection component is provided with a base band layer, a plurality of supporting bodies, conductive strips and an outer protection layer, wherein the supporting bodies extend upwards from the upper surface of the base band layer, the conductive strips are bonded or adhered to the lower surface of the base band layer, the upper surface of each supporting body is a part of the surface of a cylinder, the adjacent supporting bodies are not in contact with each other, and the outer protection layer is bonded or adhered to the lower surface of the conductive strips; the lightning protection part forms the cylinder structure and makes the supporter be located inside the cylinder through the coiling when using, and all supporter upper surfaces are on same face of cylinder and the diameter of the circle that this face of cylinder corresponds slightly is less than the external diameter of cable.
The lightning protection method for the power transmission line is characterized in that the base belt layer and the support body are integrally formed into an integral structure.
The lightning protection method for the power transmission line is characterized in that the base belt layer is made of polypropylene, polybutylene terephthalate, low-density polyethylene, medium-density polyethylene, high-density polyethylene, low-smoke halogen-free polyethylene, low-smoke low-halogen polyethylene, polyvinyl chloride, nylon, polytetrafluoroethylene, TPE, TPU, foam material or foam material.
The lightning protection method for the power transmission line is characterized in that the material of the support body is polypropylene, polybutylene terephthalate, low-density polyethylene, medium-density polyethylene, high-density polyethylene, low-smoke halogen-free polyethylene, low-smoke low-halogen polyethylene, polyvinyl chloride, nylon, polytetrafluoroethylene, TPE or TPU.
The lightning protection method for the power transmission line is characterized in that the conductive belt is made of copper, aluminum, alloy or iron, or a composite aluminum belt or a composite steel belt or a composite copper belt with a plastic layer on the surface.
The lightning protection method for the power transmission line is characterized in that the outer protective layer is made of polypropylene or polybutylene terephthalate or low-density polyethylene or medium-density polyethylene or high-density polyethylene or low-smoke halogen-free polyethylene or low-smoke low-halogen polyethylene or polyvinyl chloride or nylon or polytetrafluoroethylene or TPE or TPU.
The invention has the following main beneficial effects: the structure is simple, the cost is low, the implementation is easy, the construction is easy, the lightning protection effect is good, the electromagnetic shielding performance is excellent, the snow and rain prevention effect is excellent, and the snow melting and ice melting effects are excellent.
Drawings
Fig. 1 is a schematic perspective view of a segment as used in the present application.
Fig. 2 is a schematic perspective view of a section of the lightning protection member used in example 1.
Fig. 3 is an enlarged cross-sectional view of fig. 3.
Fig. 4 is a perspective view of a section of a lightning protection member used in example 2.
Fig. 5 is an enlarged cross-sectional view of fig. 4.
Fig. 6 is a schematic perspective view of a section of an unfolded lightning protection member used in example 3.
Fig. 7 is a schematic perspective view of a section of an unfolded lightning protection member used in example 4.
Fig. 8 is a perspective view of a segment of a lightning protection member used in example 5.
Fig. 9 is an enlarged cross-sectional view of fig. 8.
Fig. 10 is a schematic perspective view of a section of an expanded lightning protection member used in example 6.
In order that those skilled in the art will more accurately and clearly understand and practice the present application, reference is now made to the following descriptions taken in conjunction with the accompanying drawings, in which: 1-lightning protection component, 2-cable, 3-electric tower, 4-span, 11-base band layer, 12-support body, 13-conductive band, 14-outer protective layer, 121-upper surface of support body, 122-through hole.
Detailed Description
Examples 1
Referring to fig. 1 to 3, a lightning protection method for a power transmission line is characterized in that a lightning protection part 1 is mounted outside a cable 2, the cable 2 is fixed on a span 4, and the span 4 is fixed on a power tower 3 erected on the ground; the lightning protection component 1 is provided with a base band layer 11, four supporting bodies 12 and a conductive strip 13, wherein the supporting bodies 12 extend upwards from the upper surface of the base band layer 11, the conductive strip 13 is adhered or stuck on the lower surface of the base band layer 11, the upper surface 121 of each supporting body is a part of the surface of a cylinder, and the adjacent supporting bodies 12 are not in contact with each other; the lightning protection component 1 forms a cylinder structure by winding when in use and enables the support body 12 to be positioned inside the cylinder, the upper surfaces 121 of all the support bodies are on the same cylindrical surface, and the diameter of the circle corresponding to the cylindrical surface is slightly smaller than the outer diameter of the cable 2.
EXAMPLES example 2
Referring to fig. 1, 4 and 5, a lightning protection method for a power transmission line is characterized in that a lightning protection component 1 is mounted outside a cable 2, the cable 2 is fixed on a span 4, and the span 4 is fixed on a power tower 3 erected on the ground; the lightning protection component 1 is provided with a base band layer 11, four supporting bodies 12 and a conductive strip 13, wherein the base band layer 11 and the conductive strip 13 are all in a circular cylinder structure, the supporting bodies 12 extend inwards from the inner surface of the base band layer 11, the conductive strip 13 is bonded or adhered to the outer surface of the base band layer 11, the upper surfaces 121 of the supporting bodies are part of the surface of a cylinder, the adjacent supporting bodies 12 are not in contact with each other, and the upper surfaces 121 of all the supporting bodies are on the same cylindrical surface; when the cable 2 is placed, the cable 2 is inserted into a hole formed on the upper surface 121 of the support body of the lightning protection member 1, and the support body 12 engages the cable 2.
Embodiment example 3
Referring to fig. 1 and 6, the lightning protection method for the power transmission line is characterized in that a lightning protection component 1 is installed outside a cable 2, the cable 2 is fixed on a span 4, and the span 4 is fixedly installed on a power tower 3 erected on the ground; the lightning protection component 1 is provided with a base band layer 11, three supporting bodies 12 and a conductive strip 13, wherein the supporting bodies 12 extend upwards from the upper surface of the base band layer 11, the conductive strip 13 is adhered or stuck on the lower surface of the base band layer 11, the upper surface 121 of each supporting body is a part of the surface of a cylinder, and the adjacent supporting bodies 12 are not in contact with each other; the lightning protection component 1 forms a cylinder structure by winding when in use and enables the support body 12 to be positioned inside the cylinder, the upper surfaces 121 of all the support bodies are on the same cylindrical surface, and the diameter of the circle corresponding to the cylindrical surface is slightly smaller than the outer diameter of the cable 2.
EXAMPLE 4
Referring to fig. 1 and 7, a lightning protection method for a power transmission line is characterized in that a lightning protection component 1 is mounted outside a cable 2, the cable 2 is fixed on a span 4, and the span 4 is fixedly mounted on a power tower 3 erected on the ground; the lightning protection component 1 is provided with a base band layer 11, four supporting bodies 12 and a conductive strip 13, wherein the supporting bodies 12 extend upwards from the upper surface of the base band layer 11, the conductive strip 13 is adhered or stuck on the lower surface of the base band layer 11, the upper surface 121 of each supporting body is a part of the surface of a cylinder, and the adjacent supporting bodies 12 are not in contact with each other; the lightning protection component 1 forms a cylinder structure by winding when in use and enables the support body 12 to be positioned inside the cylinder, the upper surfaces 121 of all the support bodies are on the same cylindrical surface, the diameter of the circle corresponding to the cylindrical surface is slightly smaller than the outer diameter of the cable 2, and the support body 12 is provided with a plurality of through holes 122.
EXAMPLES example 5
Referring to fig. 1, 8 and 9, a lightning protection method for a power transmission line is characterized in that a lightning protection component 1 is mounted outside a cable 2, the cable 2 is fixed on a span 4, and the span 4 is fixed on a power tower 3 erected on the ground; the lightning protection component 1 is provided with a base band layer 11, four support bodies 12, a conductive belt 13 and an outer protection layer 14, wherein the base band layer 11, the conductive belt 13 and the outer protection layer 14 are all in a circular cylinder structure, the support bodies 12 extend inwards from the inner surface of the base band layer 11, the conductive belt 13 is bonded or adhered to the outer surface of the base band layer 11, the upper surfaces 121 of the support bodies are part of the surface of a cylinder, the adjacent support bodies 12 are not in contact with each other, the upper surfaces 121 of all the support bodies are on the same cylindrical surface, and the outer protection layer 14 is covered outside the conductive belt 13 in a plastic protection mode; when the cable 2 is placed, the cable 2 is inserted into a hole formed on the upper surface 121 of the support body of the lightning protection member 1, and the support body 12 engages the cable 2.
EXAMPLE 6
Referring to fig. 1 and 10, a lightning protection method for a power transmission line is characterized in that a lightning protection component 1 is mounted outside a cable 2, the cable 2 is fixed on a span 4, and the span 4 is fixedly mounted on a power tower 3 erected on the ground; the lightning protection component 1 is provided with a base band layer 11, four supporting bodies 12, a conductive belt 13 and an outer protection layer 14, wherein the supporting bodies 12 extend upwards from the upper surface of the base band layer 11, the conductive belt 13 is bonded or adhered to the lower surface of the base band layer 11, the upper surface 121 of each supporting body is a part of the surface of a cylinder, the adjacent supporting bodies 12 are not in contact with each other, and the outer protection layer 14 is bonded or adhered to the lower surface of the conductive belt 13; the lightning protection component 1 forms a cylinder structure by winding when in use and enables the support body 12 to be positioned inside the cylinder, the upper surfaces 121 of all the support bodies are on the same cylindrical surface, and the diameter of the circle corresponding to the cylindrical surface is slightly smaller than the outer diameter of the cable 2.
In the present application, the number of the support bodies is not limited to three or four, and may be other plural.
In the present application, the base belt layer and the support body are integrally formed as a single structure.
In this application, the material of the base tape layer is polypropylene or polybutylene terephthalate or low density polyethylene or medium density polyethylene or high density polyethylene or low smoke halogen-free polyethylene or low smoke low halogen polyethylene or polyvinyl chloride or nylon or polytetrafluoroethylene or TPE or TPU.
In this application, the material of the support is polypropylene or polybutylene terephthalate or low-density polyethylene or medium-density polyethylene or high-density polyethylene or low-smoke halogen-free polyethylene or low-smoke low-halogen polyethylene or polyvinyl chloride or nylon or polytetrafluoroethylene or TPE or TPU.
In the application, the conductive belt is made of copper, aluminum, alloy, iron or a composite aluminum belt, a composite steel belt or a composite copper belt with a plastic layer on the surface.
In this application, the outer sheath is made of polypropylene, polybutylene terephthalate, low-density polyethylene, medium-density polyethylene, high-density polyethylene, low-smoke halogen-free polyethylene, low-smoke low-halogen polyethylene, polyvinyl chloride, nylon, polytetrafluoroethylene, TPE, or TPU.
In the present application, the support body may also be a foam or a foam.
In the present application, the support body has a large deformation capacity or elastic extension and retraction capacity, is long in a normal condition, and is compressed when the cable is clamped, so that the cable can be tightly clamped.
When the lightning protection cable is used, a tubular structure can be adopted for newly laid cables, and the cables penetrate during laying, so that the whole cable has a lightning protection effect; the laid cable can adopt a structure similar to the embodiments 1, 3, 4 and 6, and is rolled outside the cable, so that the cable is not necessarily covered completely; it is also possible to use a construction similar to that of the embodiments 2, 5, cut and then clipped on the cable.
In the prior art, lightning protection devices such as lightning arresters, lightning rods and the like are generally arranged at or on the tower, so that the whole cable can not be fully covered.
The conductive belt 13 is conductive, so that the conductive belt can be connected with a wire and grounded, so that the whole conductive belt can be grounded or a section of conductive belt can be grounded, the grounding performance is greatly improved, and an effective lightning protection effect is achieved; in addition, the gaps between the supporting bodies 12 effectively improve the heat dissipation performance of the cable; and the conductive strips have the electromagnetic shielding performance to a certain degree. For the line with the soft distance between the two towers, under the premise of not hindering traffic and other conditions, the middle part of the line can be grounded, one end of the grounding wire is connected to the conductive belt, and the other end of the grounding wire is grounded, so that the lightning protection effect is better; in the vicinity of the tower, the conducting belt is connected with the grounding wire on the tower by adopting a conducting wire, and in this way, for the relatively short tower, the power transmission wire on the tower does not need to be grounded in the middle.
In this application, the conduction band is ungrounded also can play partial lightning protection effect, and during lightning stroke power transmission line or cable, owing to the blocking of the lightning protection part in this application, the lightning stroke was on the lightning protection part, and the heat extends to both sides rapidly from the conduction band, because inside the having great hollow portion of conduction band, so the heat extremely fast gives off, has effectively protected the cable.
In this application, the area of earial drainage has been increased in the conduction band, and lightning protection part segment structure makes electric arc production interrupt, is difficult for burning out whole cable, has burnt out lightning protection part and also can effectively protect to the cable.
In the application, because lightning protection part surface is smooth, so rain, snow etc. are difficult for the accumulation, and do rocking slightly, can make rain and snow drop, have ensured the normal operating of cable effectively.
In the application, the conductive belt 13 can be electrified to heat, so that the effects of snow melting and ice melting can be realized in extremely severe weather, and the effective operation of the cable is effectively guaranteed.
The application makes up for the blank of lightning protection of transmission lines or cables in the prior art.
Through the screening, after having used this application to the cable that often receives the thunderbolt damage, do not have the cracked phenomenon of cable again in 3 years, only made 2 local changes of lightning protection part, so this application has great circuit lightning protection advantage.
The invention has the following main beneficial effects: the structure is simple, the cost is low, the implementation is easy, the construction is easy, the lightning protection effect is good, the electromagnetic shielding performance is excellent, the snow and rain prevention effect is excellent, and the snow melting and ice melting effects are excellent.
The above-described embodiments are merely preferred technical solutions of the present invention, and should not be construed as limiting the present invention. The protection scope of the present invention is defined by the claims, and includes equivalents of technical features of the claims. I.e., equivalent alterations and modifications within the scope hereof, are also intended to be within the scope of the invention.
Claims (10)
1. A method for lightning protection of an electric transmission line, characterized in that a lightning protection element (1) is mounted on the outside of a cable (2), said cable (2) being fixed on a span (4), said span (4) being fixed on a power tower (3) erected on the ground; the lightning protection component (1) is provided with a base band layer (11), a plurality of supporting bodies (12) and a conductive strip (13), wherein the supporting bodies (12) extend upwards from the upper surface of the base band layer (11), the conductive strip (13) is bonded or stuck on the lower surface of the base band layer (11), the upper surface (121) of each supporting body is a part of the surface of a cylinder, and the adjacent supporting bodies (12) are not in contact with each other; when the lightning protection component (1) is used, a cylinder structure is formed by winding, the support body (12) is located inside the cylinder, the upper surfaces (121) of all the support bodies are on the same cylindrical surface, and the diameter of a circle corresponding to the cylindrical surface is slightly smaller than the outer diameter of the cable (2).
2. A lightning protection method for a transmission line is characterized in that a lightning protection part (1) is arranged outside a cable (2), the cable (2) is fixed on a span (4), and the span (4) is fixedly arranged on an electric power tower (3) erected on the ground; the lightning protection component (1) is provided with a base band layer (11), a plurality of supporting bodies (12) and a conductive belt (13), wherein the base band layer (11) and the conductive belt (13) are of a circular cylinder structure, the supporting bodies (12) extend inwards from the inner surface of the base band layer (11), the conductive belt (13) is bonded or adhered to the outer surface of the base band layer (11), the upper surfaces (121) of the supporting bodies are part of the surface of a cylinder, the adjacent supporting bodies (12) are not in contact with each other, and the upper surfaces (121) of all the supporting bodies are on the same cylindrical surface; when the cable (2) is placed, the cable (2) is inserted into a hole formed on the upper surface (121) of the support body of the lightning protection component (1), and the support body (12) clamps the cable (2).
3. A lightning protection method for a transmission line is characterized in that a lightning protection part (1) is arranged outside a cable (2), the cable (2) is fixed on a span (4), and the span (4) is fixedly arranged on an electric power tower (3) erected on the ground; the lightning protection component (1) is provided with a base band layer (11), a plurality of supporting bodies (12) and a conductive strip (13), wherein the supporting bodies (12) extend upwards from the upper surface of the base band layer (11), the conductive strip (13) is bonded or stuck on the lower surface of the base band layer (11), the upper surface (121) of each supporting body is a part of the surface of a cylinder, and the adjacent supporting bodies (12) are not in contact with each other; the lightning protection component (1) forms a cylinder structure through winding when in use and enables the support body (12) to be positioned inside the cylinder, the upper surfaces (121) of all the support bodies are on the same cylindrical surface, the diameter of a circle corresponding to the cylindrical surface is slightly smaller than the outer diameter of the cable (2), and the support body (12) is provided with a plurality of through holes (122).
4. A method for lightning protection of an electric transmission line, characterized in that a lightning protection element (1) is mounted on the outside of a cable (2), said cable (2) being fixed on a span (4), said span (4) being fixed on a power tower (3) erected on the ground; the lightning protection component (1) is provided with a base band layer (11), a plurality of supporting bodies (12), a conductive belt (13) and an outer protection layer (14), the base band layer (11), the conductive belt (13) and the outer protection layer (14) are all in a circular cylinder structure, the supporting bodies (12) extend inwards from the inner surface of the base band layer (11), the conductive belt (13) is bonded or adhered to the outer surface of the base band layer (11), the upper surfaces (121) of the supporting bodies are part of the surface of a cylinder, the adjacent supporting bodies (12) are not in contact with each other, all the upper surfaces (121) of the supporting bodies are on the same cylindrical surface, and the outer protection layer (14) covers the conductive belt (13) in a plastic protection mode; when the cable (2) is placed, the cable (2) penetrates into a hole formed in the upper surface (121) of the support body of the lightning protection component (1), and the support body (12) clamps the cable (2).
5. A method for lightning protection of an electric transmission line, characterized in that a lightning protection element (1) is mounted on the outside of a cable (2), said cable (2) being fixed on a span (4), said span (4) being fixed on a power tower (3) erected on the ground; the lightning protection component (1) is provided with a base band layer (11), a plurality of supporting bodies (12), a conductive belt (13) and an outer protection layer (14), wherein the supporting bodies (12) extend upwards from the upper surface of the base band layer (11), the conductive belt (13) is bonded or adhered to the lower surface of the base band layer (11), the upper surface (121) of each supporting body is a part of the surface of a cylinder, the adjacent supporting bodies (12) are not in contact with each other, and the outer protection layer (14) is bonded or adhered to the lower surface of the conductive belt (13); when the lightning protection component (1) is used, a cylinder structure is formed by winding, the support body (12) is located inside the cylinder, the upper surfaces (121) of all the support bodies are on the same cylindrical surface, and the diameter of a circle corresponding to the cylindrical surface is slightly smaller than the outer diameter of the cable (2).
6. The method according to claim 4 or claim 5, wherein the material of the outer sheath is polypropylene or polybutylene terephthalate or low density polyethylene or medium density polyethylene or high density polyethylene or low smoke halogen-free polyethylene or low smoke low halogen polyethylene or polyvinyl chloride or nylon or polytetrafluoroethylene or TPE or TPU.
7. The method of claim 6, wherein the base tape layer and the support are integrally formed as a unitary structure.
8. The method according to claim 6, wherein the base tape layer is made of polypropylene, polybutylene terephthalate, low-density polyethylene, medium-density polyethylene, high-density polyethylene, low-smoke halogen-free polyethylene, low-smoke low-halogen polyethylene, polyvinyl chloride, nylon, polytetrafluoroethylene, TPE or TPU.
9. The method according to claim 6, wherein the support is made of polypropylene, polybutylene terephthalate, low-density polyethylene, medium-density polyethylene, high-density polyethylene, low-smoke halogen-free polyethylene, low-smoke low-halogen polyethylene, polyvinyl chloride, nylon, polytetrafluoroethylene, TPE, TPU, foam, or foam.
10. The method of claim 6, wherein the conductive strip is made of copper, aluminum alloy, iron, or a composite aluminum strip, a composite steel strip, or a composite copper strip with a plastic layer on the surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011029410.0A CN112186700B (en) | 2020-09-27 | 2020-09-27 | Lightning protection method for power transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011029410.0A CN112186700B (en) | 2020-09-27 | 2020-09-27 | Lightning protection method for power transmission line |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112186700A CN112186700A (en) | 2021-01-05 |
| CN112186700B true CN112186700B (en) | 2022-05-24 |
Family
ID=73944571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011029410.0A Active CN112186700B (en) | 2020-09-27 | 2020-09-27 | Lightning protection method for power transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112186700B (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102610935B (en) * | 2012-03-31 | 2013-12-25 | 云南省昆明农业气象试验站 | Soil non-excavation grounding resistance reduction method |
| CN103746195B (en) * | 2014-02-10 | 2015-12-23 | 银川锦天乐防雷技术有限公司 | Modularity lightning protection Special grounding device |
| CN206148632U (en) * | 2016-11-18 | 2017-05-03 | 安徽亿纵电子科技有限公司 | Pipeline thunder current device can weaken |
| CN209344514U (en) * | 2018-12-04 | 2019-09-03 | 金华八达集团有限公司科技信息分公司 | The device of steel tower tower head overvoltage when a kind of inhibition transmission line lightning stroke |
| CN210669525U (en) * | 2019-10-22 | 2020-06-02 | 深圳远征技术有限公司 | Lightning protection device |
| CN210626742U (en) * | 2019-11-29 | 2020-05-26 | 江苏长飞中利光纤光缆有限公司 | Lightning-proof layer stranded ribbon optical cable |
| CN111446032B (en) * | 2020-05-14 | 2024-03-01 | 国网湖北省电力有限公司十堰供电公司 | Overhead insulated conductor capable of preventing lightning strike fracture of 10kV power line and manufacturing method thereof |
-
2020
- 2020-09-27 CN CN202011029410.0A patent/CN112186700B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN112186700A (en) | 2021-01-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105102090A (en) | Method for constructing power distribution line by using combined overhead ground wire and extra high voltage neutral line having separated installation structure for extra high voltage neutral line and low voltage neutral line | |
| CN104242208B (en) | A kind of overhead transmission line double back cable terminal steel pipe pole | |
| FI92773B (en) | Surface coated high voltage line | |
| WO2010057422A1 (en) | An insulator capable of improving the electrical strength of external insulation | |
| KR20090019946A (en) | Falling of a thunderbolt control apparatus of power transmission wire structure | |
| CN112186700B (en) | Lightning protection method for power transmission line | |
| CN204089116U (en) | A kind of overhead transmission line double back cable terminal steel pipe pole | |
| WO2021223313A1 (en) | Power transmission line without lightning shield line | |
| US7606017B2 (en) | Protection device: surge suppressing conductor | |
| CN109786046B (en) | 500kV line lightning-proof anti-icing flashover composite insulator | |
| CN102129105B (en) | Sectional-insulation single-point grounding operating method for OPGW optical cable | |
| CN105896312A (en) | Lightning protection apparatus of installing lightning attractor on same tower of overhead power distribution line in insulation mode | |
| KR100962248B1 (en) | High performance dipole lightning rod | |
| KR102309365B1 (en) | Apparatus for voltage withstand test | |
| JP4253510B2 (en) | Lightning rod device | |
| JPH1140390A (en) | Insulating type lightning conductor | |
| CN208329816U (en) | Extra high voltage network and its EHV transmission strain insulator steel tower | |
| CN109586235B (en) | A outer lightning rod ground structure of leading of resistant angle steel tower for open area and many thunder district environment | |
| JPH0515130B2 (en) | ||
| CN217822124U (en) | Insulated drainage wire prepared from insulated cable and suitable for single drainage string | |
| CN109779373B (en) | Cable terminal rod for breaking one circuit in double-circuit same-rod parallel-rack transmission line | |
| CN217824162U (en) | Insulated drainage wire prepared from insulated cable and suitable for double drainage strings | |
| CN213781719U (en) | Insulator protector | |
| CN219696096U (en) | Overhead ice melting ground wire | |
| CN220420271U (en) | High-voltage line insulating sheath |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20220406 Address after: 442005 No.79, Renmin South Road, Maojian District, Shiyan City, Hubei Province Applicant after: SHIYAN POWER SUPPLY COMPANY OF STATE GRID HUBEI ELECTRIC POWER Co.,Ltd. Address before: 215554 Dahe village, Shanghu Town, Changshu City, Suzhou City, Jiangsu Province Applicant before: Qin Jinfeng |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |