CN202839098U - Lightning-resistant optical fiber composite overhead ground wire - Google Patents
Lightning-resistant optical fiber composite overhead ground wire Download PDFInfo
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- CN202839098U CN202839098U CN 201220570388 CN201220570388U CN202839098U CN 202839098 U CN202839098 U CN 202839098U CN 201220570388 CN201220570388 CN 201220570388 CN 201220570388 U CN201220570388 U CN 201220570388U CN 202839098 U CN202839098 U CN 202839098U
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- aluminium
- optical fiber
- clad steel
- steel wire
- fiber composite
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Abstract
The utility model provides a lightning-resistant optical fiber composite overhead ground wire, comprising aluminum-covered steel wires and an optical unit using a stainless steel pipe as a casing pipe. The optical unit comprises an optical fiber; the optical fiber is located inside the stainless steel pipe; the aluminum-covered steel wires and the optical unit form a stranding structure; the aluminum-covered steel wires comprise an aluminum-covered steel wire I, an aluminum-covered steel wire II and an aluminum-covered steel wire III; the stranding structure comprises a center layer, a first layer and a second layer; the center layer is provided with the aluminum-covered steel wire I; the first layer consists of the aluminum-covered steel wire II and the optical unit; and the second layer is provided with the eleven aluminum-covered steel wires III. The lightning-resistant optical fiber composite overhead ground wire is mainly used for building an optical fiber communication network of an electric system, has functions of lightning protection and branching, and optical fiber communication and the like, has good lightning resistance, and can be applicable to a high-thunderstorm area.
Description
Technical field
The utility model relates to a kind of Optical Fiber composite overhead Ground Wire, particularly a kind of anti-thunderbolt Optical Fiber composite overhead Ground Wire.
Background technology
Overhead ground wire is that the protection overhead transmission line exempts from the device that lightning attacks.Claim again lightning conducter.Transmission line is crossed over wide region, easily is struck by lightning and causes and send electricity to interrupt at thunderstorm season, becomes the one of the main reasons that power outage occurs in the electric power system.Overhead ground wire is installed is reduced the damage to crops caused by thunder accident, improve the circuit Operation safety.Overhead ground wire is the important component part of high voltage transmission line line structure.High pressure and EHV Substation floor space are wide, require the zone of direct striking thunder prevention large, lightning rod is installed can be had any problem, thereby sometimes also to adopt overhead ground wire protection, overhead ground wire all be to be erected at protected wire top and to pass through tower grounding.When the side occurred thundercloud to ground discharge on the line, lightning easily at first hit overhead ground wire, makes lightning current enter the earth, normally send electricity with guardwire.Simultaneously, overhead ground wire also has electromagnetic shielding action, when near the thundercloud circuit during to ground discharge, can be reduced in the lightning induced voltage that causes on the wire.
Optical Fiber composite overhead Ground Wire has the functions such as the function of lightning-arrest shunting of overhead ground wire and optical-fibre communications concurrently, construction along with the Fiber-optic Communication In Electric Power System network, Optical Fiber composite overhead Ground Wire is with its advanced manufacturing technology and good reliability and used on a large scale, thunderbolt causes the situation of disconnected strand of Optical Fiber composite overhead Ground Wire also more and more, and the anti-lightning performance of Optical Fiber composite overhead Ground Wire and its structure have very large relation.
Outer layer metal line in the Optical Fiber composite overhead Ground Wire often adopts aluminium alloy wire, the fusing point of aluminium alloy is lower, when being subject to being struck by lightning, easily blow, adopt the anti-lightning performance of this structure not good, easily cause disconnected strand of outer aluminium alloy wire in high thunderstorm area, affect the use of Optical Fiber composite overhead Ground Wire, UHV transmission line and power communication have been consisted of serious threat, its normal stranded mode that adopts 1+6+12, be that central core is an aluminium-clad steel wire line, ground floor is that aluminium-clad steel wire and light unit form the six roots of sensation jointly, the second layer is 12 aluminium alloy wires, and ground floor is stranded to be coated on the central core, and the second layer is stranded to be coated on the ground floor; Owing to need to guarantee when stranded that not loose burst of while can not be too tight, in the identical situation in light unit, the aluminium alloy wire diameter of the second layer is less when adopting this frame mode, therefore resistance is larger, when being struck by lightning, have larger electric current and flow through aluminium alloy wire, thereby produce very large heat, tensile strength and the fusing point of aluminium alloy wire are lower with respect to aluminium-clad steel wire simultaneously, when frequently being struck by lightning, can cause the outermost layer aluminium alloy wire to wear out even fusing, affect the use of Optical Fiber composite overhead Ground Wire, UHV transmission line and power communication have been consisted of serious threat.
Summary of the invention
The purpose of this utility model is to provide a kind of anti-lightning well behaved anti-thunderbolt Optical Fiber composite overhead Ground Wire.
In order to realize the purpose of this utility model, the technical scheme of taking is: a kind of anti-thunderbolt Optical Fiber composite overhead Ground Wire, comprise the light unit of making sleeve pipe with stainless steel tube, described smooth unit comprises optical fiber, described optical fiber is positioned at stainless steel tube, also comprise aluminium-clad steel wire, described aluminium-clad steel wire and light unit form the layer-twisted type structure, described aluminium-clad steel wire comprises aluminium-clad steel wire one, aluminium-clad steel wire two, aluminium-clad steel wire three, described layer-twisted type structure comprises central core, ground floor, the second layer, described central core has an aluminium-clad steel wire one, and described ground floor comprises aluminium-clad steel wire two and light unit, and the described second layer comprises aluminium-clad steel wire three.
Aluminium-clad steel wire has higher tensile strength and fusing point with respect to the aluminium alloy wire of general employing, optical fiber need to bear a certain size pulling force in installation process, higher tensile strength can better be protected optical fiber, higher fusing point, better anti-lightning performance is arranged, can use in high thunderstorm area, guarantee the normal operation of power communication; The structure of Optical Fiber composite overhead Ground Wire has a great impact the anti-thunderbolt performance tool of himself, adopt the structure of layer-twisted type, can make the optical fiber in the light unit have suitable remaining length, has stronger tensile property, three layers structural design is the optimal selection of mixed economy and anti-thunderbolt performance, the number of plies is more, its cost is higher, weight is heavier, the tension force that produces is larger, increased the bearing load of shaft tower, and do not mated with another root shunt ground wire and also can cause the shaft tower unbalance stress to cause the phenomenon of falling the tower, also inconvenient when producing and install; The number of plies will be exposed to outermost layer for the tangle light unit of structure of layer very little, and the performance of anti-thunderbolt is not good, can not satisfy the use in high thunderstorm area.
The below further specifies technical scheme:
Among embodiment, described second layer aluminium-clad steel wire three is 11 therein.11 outer aluminium-clad steel wire is larger with respect to 12 diameters commonly used, and anti-thunderbolt performance is better, can play better protective effect.
Among embodiment, described ground floor comprises five aluminium-clad steel wires two and a light unit therein.This project organization is simple, and is functional.
Among embodiment, described ground floor comprises four aluminium-clad steel wires two and two light unit therein.This project organization is simple, and is functional.
Among embodiment, described smooth unit is symmetrical with respect to central core therein.Because to the light unit the time, the light unit need to bear a certain size power to aluminium-clad steel wire, can better protect the light unit during symmetrical production, makes the light unit stressed more even stranded, more simple during production, fast.
Among embodiment, described ground floor comprises three aluminium-clad steel wires two and three light unit, described smooth unit and described aluminium-clad steel wire two cross-distribution therein.This project organization is simple, and is functional.
Among embodiment, described aluminium-clad steel wire three diameters are 3.4 millimeters therein.It is the optimal selection that integrated cost and the performance synthesis of anti-the thunderbolt are considered that the diameter of aluminium-clad steel wire is 3.4 millimeters, and diameter is the anti-thunderbolt function admirable of 3.4 millimeters aluminium-clad steel wire, and cost is lower, and can guarantee whole Optical Fiber composite overhead Ground Wire compact conformation; About each layer twisted wire diameter, in standard GB/T 1179-2008, stipulate, must satisfy related request in the standard, can not arbitrarily determine the diameter of outer aluminium-clad steel wire, if too greatly also can cause outer strand strand and not tight even pine burst phenomenon, affect the use of Optical Fiber composite overhead Ground Wire, so the aluminium-clad steel wire diameter is also unsuitable excessive.The not loose thigh of the anti-thunder performance of analysis-by-synthesis, cost and assurance Optical Fiber composite overhead Ground Wire, the diameter of aluminium-clad steel wire three is elected 3.4 millimeters as.
Among embodiment, described smooth element diameter is 2.9 millimeters therein, and described aluminium-clad steel wire two diameters are 3.0 millimeters, and described aluminium-clad steel wire one diameter is 3.1 millimeters.The light unit comprises 36 core G652 optical fiber, 12 core G655 optical fiber, 2.9 the diameter of millimeter fully receiving optical fiber simultaneously can be well and the stranded compactness of aluminium-clad steel wire, be slightly less than with a layer aluminium-clad steel wire diameter and can make the light unit avoid the aluminium-clad steel wire extruding, aluminium-clad steel wire two diameters be 3.0 millimeters energy well and light unit and aluminium-clad steel wire three stranded.
Among embodiment, described central core aluminium-clad steel wire one diameter is 3.1 millimeters therein, and the light element diameter is 2.9 millimeters, and ground floor aluminium-clad steel wire two diameters are 3.0 millimeters, and second layer aluminium-clad steel wire three diameters are 3.4 millimeters.Optical Fiber composite overhead Ground Wire compact conformation when these several dimensional fits use, satisfy the requirement of GB/T 1179-2008 standard, and when this Optical Fiber composite overhead Ground Wire has been carried out anti-lightning test according to DL/T 832-2003 electric power rower, all not disconnected strand on outer monofilament, optical fiber illustrates to have preferably anti-thunderbolt performance without additional attenuation.
The utility model has the advantages that:
Aluminium-clad steel wire has higher tensile strength and fusing point with respect to the aluminium alloy wire of general employing, optical fiber need to bear a certain size pulling force in installation process, higher tensile strength can better be protected optical fiber, and in lightning current corrode OPGW(Optical Fiber composite overhead Ground Wire) behind the surface, when descending, the strand mechanical performance is difficult for disconnected strand under external force, simultaneously higher fusing point, can avoid the high temperature of thunder and lightning directly to melt the OPGW(Optical Fiber composite overhead Ground Wire) strand, therefore has better anti-lightning performance, can use in high thunderstorm area, guarantee the normal operation of power communication; The structure of Optical Fiber composite overhead Ground Wire has a great impact the anti-thunderbolt performance tool of himself, adopt the structure of layer-twisted type, the excess fiber length adjustable range is large, be difficult for occuring strain, has stronger tensile property, three layers structural design is the optimal selection of mixed economy and anti-thunderbolt performance, the number of plies is more, its cost is higher, weight is heavier, and the tension force of generation is larger, has increased the load-bearing load of shaft tower, and do not mate with another root shunt ground wire and also can cause the shaft tower unbalance stress to cause the phenomenon of falling the tower, also inconvenient when producing and install; The number of plies will be exposed to outermost layer for the tangle light unit of structure of layer very little, and the performance of anti-thunderbolt is not good, can not satisfy the use in high thunderstorm area.
Described central core aluminium-clad steel wire one diameter is 3.1 millimeters, the light element diameter is 2.9 millimeters, and ground floor aluminium-clad steel wire two diameters are 3.0 millimeters, and second layer aluminium-clad steel wire three diameters are 3.4 millimeters, the anti-thunderbolt better performances of this combination, and can guarantee whole Optical Fiber composite overhead Ground Wire compact conformation.
Description of drawings
Fig. 1 is the structural representation of the anti-thunderbolt Optical Fiber composite overhead Ground Wire of the utility model embodiment 1;
Fig. 2 is the structural representation of the anti-thunderbolt Optical Fiber composite overhead Ground Wire of the utility model embodiment 2;
Fig. 3 is the structural representation of the anti-thunderbolt Optical Fiber composite overhead Ground Wire of the utility model embodiment 3.
Description of reference numerals:
1. light unit, 11. optical fiber, 12. stainless steel tubes, 21. aluminium-clad steel wires, one, 22. aluminium-clad steel wire, two, 23. aluminium-clad steel wires, three, 231. aluminium laminations, 232. steel wires.
Embodiment
Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated:
Embodiment 1:
Consult Fig. 1, a kind of anti-thunderbolt Optical Fiber composite overhead Ground Wire, comprise the light unit 1 of making sleeve pipe with stainless steel tube 12, aluminium-clad steel wire, described smooth unit 1 comprises optical fiber 11, described optical fiber 11 is positioned at stainless steel tube 12, described aluminium-clad steel wire and light unit 1 form the layer-twisted type structure, described layer-twisted type structure comprises central core, ground floor, the second layer, described central core has an aluminium-clad steel wire 1, described ground floor comprises aluminium-clad steel wire 2 22 and light unit 1, be divided into four aluminium-clad steel wires 2 22 and two light unit 1, described smooth unit 1 is symmetrical with respect to central core, and the described second layer comprises aluminium-clad steel wire 3 23, and described second layer aluminium-clad steel wire 3 23 is 11, aluminium-clad steel wire is comprised of aluminium lamination 231 and steel wire 232, described ground floor is stranded to be coated on the central core, and the described second layer is stranded to be coated on the ground floor, and it can also be increased to the n layer, n is integer and more than or equal to three, every one deck afterwards is stranded being coated on front one deck all.
As shown in Figure 1, the diameter of described aluminium-clad steel wire three is 3.4 millimeters (greater than 3.0 millimeters), and the diameter of aluminium-clad steel wire one is 3.1 millimeters, and the diameter of aluminium-clad steel wire two is 3.0 millimeters, and the diameter of light unit is 2.9 millimeters.
The diameter of Optical Fiber composite overhead Ground Wire is 15.9 millimeters, long-pending 136.0 square millimeters of bearing cross-section, and nominal tensile strength (RTS) is 90.1kN, and Unit Weight is 708kg/km, and Young's modulus is 113.792kN/mm
2Thermal coefficient of expansion 15.1 * 10
-6/ ℃, 20 ℃ of D.C. resistance 0.328 Ω/km, short circuit current (0.25s, 40 ℃-200 ℃) 24.74kA, short-circuit current capability 153.0kA
2S.
Embodiment 2:
As shown in Figure 2, the present embodiment and embodiment one different place is, described ground floor comprises five aluminium-clad steel wires 2 22 and a light unit 1.
Embodiment 3:
As shown in Figure 3, the present embodiment and embodiment 1, embodiment 2 different places are, described ground floor comprises that three aluminium-clad steel wires 2 22 and three light unit 1 form described smooth unit 1 and described aluminium-clad steel wire 2 22 cross-distribution.
Above-listed detailed description is that this embodiment limits claim of the present utility model for the specifying of the utility model possible embodiments, and does not allly break away from the equivalence that the utility model does and implements or change, all should be contained in the claim of this case.
Claims (8)
1. anti-thunderbolt Optical Fiber composite overhead Ground Wire, comprise the light unit of making sleeve pipe with stainless steel tube, described smooth unit comprises optical fiber, described optical fiber is positioned at stainless steel tube, it is characterized in that: also comprise aluminium-clad steel wire, described aluminium-clad steel wire and light unit form the layer-twisted type structure, described aluminium-clad steel wire comprises aluminium-clad steel wire one, aluminium-clad steel wire two, aluminium-clad steel wire three, described layer-twisted type structure comprises central core, ground floor, the second layer, described central core has an aluminium-clad steel wire one, described ground floor comprises aluminium-clad steel wire two and light unit, and the described second layer comprises aluminium-clad steel wire three.
2. anti-thunderbolt Optical Fiber composite overhead Ground Wire according to claim 1, it is characterized in that: described second layer aluminium-clad steel wire three is 11.
3. anti-thunderbolt Optical Fiber composite overhead Ground Wire according to claim 1, it is characterized in that: described ground floor comprises five aluminium-clad steel wires two and a light unit.
4. anti-thunderbolt Optical Fiber composite overhead Ground Wire according to claim 1, it is characterized in that: described ground floor comprises four aluminium-clad steel wires two and two light unit.
5. anti-thunderbolt Optical Fiber composite overhead Ground Wire according to claim 4, it is characterized in that: described smooth unit is symmetrical with respect to central core.
6. anti-thunderbolt Optical Fiber composite overhead Ground Wire according to claim 1 is characterized in that: described ground floor is that three aluminium-clad steel wires two and three light unit form, and described smooth unit and described aluminium-clad steel wire two are alternately distributed.
7. each described anti-thunderbolt Optical Fiber composite overhead Ground Wire according to claim 1-6, it is characterized in that: described aluminium-clad steel wire three diameters are 3.4 millimeters.
8. anti-thunderbolt Optical Fiber composite overhead Ground Wire according to claim 7, it is characterized in that: described smooth element diameter is 2.9 millimeters, and described aluminium-clad steel wire two diameters are 3.0 millimeters, and described aluminium-clad steel wire one diameter is 3.1 millimeters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220570388 CN202839098U (en) | 2012-11-01 | 2012-11-01 | Lightning-resistant optical fiber composite overhead ground wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220570388 CN202839098U (en) | 2012-11-01 | 2012-11-01 | Lightning-resistant optical fiber composite overhead ground wire |
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| Publication Number | Publication Date |
|---|---|
| CN202839098U true CN202839098U (en) | 2013-03-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220570388 Expired - Lifetime CN202839098U (en) | 2012-11-01 | 2012-11-01 | Lightning-resistant optical fiber composite overhead ground wire |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915805A (en) * | 2012-11-01 | 2013-02-06 | 广东电网公司电力调度控制中心 | Lightning stroke-resistant optical fibre composite overhead ground wire |
| CN103280273A (en) * | 2013-05-24 | 2013-09-04 | 四川电力设计咨询有限责任公司 | Double-stranded OPGW (Optical Fiber Composite Overhead Ground Wire) optical cable and processing method thereof |
| CN105375431A (en) * | 2015-12-10 | 2016-03-02 | 国网四川省电力公司电力科学研究院 | Communication lightning protection system |
-
2012
- 2012-11-01 CN CN 201220570388 patent/CN202839098U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102915805A (en) * | 2012-11-01 | 2013-02-06 | 广东电网公司电力调度控制中心 | Lightning stroke-resistant optical fibre composite overhead ground wire |
| CN103280273A (en) * | 2013-05-24 | 2013-09-04 | 四川电力设计咨询有限责任公司 | Double-stranded OPGW (Optical Fiber Composite Overhead Ground Wire) optical cable and processing method thereof |
| CN103280273B (en) * | 2013-05-24 | 2016-03-02 | 四川电力设计咨询有限责任公司 | Bifilar OPGW optical cable and processing method thereof |
| CN105375431A (en) * | 2015-12-10 | 2016-03-02 | 国网四川省电力公司电力科学研究院 | Communication lightning protection system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 510699 Plum Blossom Road, Guangzhou, Guangdong, No. 75, No. Patentee after: Electric Power Dispatch Control Center of Guangdong Grid Co. Patentee after: China Electric Power Research Institute Patentee after: CHINA ENERGY ENGINEERING GROUP GUANGDONG ELECTRIC POWER DESIGN INSTITUTE Co.,Ltd. Address before: 510699 Plum Blossom Road, Guangzhou, Guangdong, No. 75, No. Patentee before: Electric Power Dispatch Control Center of Guangdong Grid Co. Patentee before: China Electric Power Research Institute Patentee before: GUANGDONG ELECTRIC POWER DESIGN INSTITUTE OF CHINA ENERGY ENGINEERING GROUP Co.,Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20130327 |
|
| CX01 | Expiry of patent term |