CN201251947Y - Optical fiber composite overhead earth wire of high altitude hilly strong thunder and lightning active region - Google Patents
Optical fiber composite overhead earth wire of high altitude hilly strong thunder and lightning active region Download PDFInfo
- Publication number
- CN201251947Y CN201251947Y CNU2008200816490U CN200820081649U CN201251947Y CN 201251947 Y CN201251947 Y CN 201251947Y CN U2008200816490 U CNU2008200816490 U CN U2008200816490U CN 200820081649 U CN200820081649 U CN 200820081649U CN 201251947 Y CN201251947 Y CN 201251947Y
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- optical fiber
- fiber composite
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- opgw
- composite overhead
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Abstract
The utility model relates to an optical fiber composite overhead earth wire of high altitude hilly strong thunder and lightning active region (OPGW), wherein the maximum lightning stroke energy which should be endured by the optical fiber composite overhead earth wire of high altitude hilly strong thunder and lightning active region is executed according to 200C, an aluminum-clad steel wire is adopted as an outer layer strand cable of an OPGW in a 500kV power transmission route, the folded yarns diameter of the outer layer strand cable should be bigger than 3.0mm, and the optical fiber composite overhead earth wire of high altitude hilly strong thunder and lightning active region has prominent advantages that accidents of lightning broken strand can be reduced and the OPGW stable operation performance is improved.
Description
Technical field:
The utility model belongs to the power transmission line category, especially at the high height above sea level of 1500m～3000m 220kV of mountainous region and above electric pressure Optical Fiber composite overhead Ground Wire (OPGW) aerial fiber cable applied technical field.
Background technology:
Along with the construction of electric power system light communication network, the lightning-arrest function of light harvesting fiber communication function and transmission line is in Optical Fiber composite overhead Ground Wire (OPGW) beginning wide-scale adoption in electrical network especially voltage levels electrical network of one.Inevitable lightning strike accident tends to cause impaired, disconnected strand of OPGW ground wire unit and then causes the light unit impaired in the electrical network, thereby influences the unimpeded of communication network.Since the nineties in last century, the bigger disconnected stock market affairs event of OPGW thunderbolt of probability has taken place in numerous circuits that put into operation both domestic and external, and its disconnected number of share of stock amount is generally one to two strand, and disconnected four or five strands situation is arranged once in a while, and the maximum damage of individual line reaches tens on outer disconnected thigh.Strong lightening activity area, the many mountains of high height above sea level OPGW parameter determines, to solve exactly the anti-thunder performance of this type of electric power special optical cable low, easily the disconnected stock market affairs of thunderbolt take place so, problems such as no specific aim examination performance assessment criteria.
Summary of the invention:
Parameters such as the structural shape that the OPGW that the utility model is clear and definite uses in high height above sea level mountainous region electrical network should possess, anti-thunder grade, lead material, outer layer line footpath, instructing the new OPGW of installation to order goods selects, improve the tolerance thunder and lightning transfer charge ability integral level of OPGW, prevent that to greatest extent the disconnected burst phenomenon of OPGW thunderbolt from taking place, and ensures the safe operation of electric power system OPGW.
The purpose of this utility model will overcome the disconnected burst problem of strong lightening activity area Optical Fiber composite overhead Ground Wire (OPGW) thunderbolt on the many mountains of high height above sea level that has now exactly, and provide a kind of thigh that can not break, thereby can not influence the unimpeded of communication network, transmission line communication network quality be can improve greatly, the safety of electrical network, the strong lightening activity area Optical Fiber composite overhead Ground Wire on the many mountains of high height above sea level of stable operation guaranteed.
The utility model is mainly realized by following technical proposal: the maximum thunderbolt energy grade unification that OPGW should bear is implemented by 200C; Promptly in the 500kV transmission line, recommend to adopt the outer twisted wire of aluminium-clad steel wire, and strand diameter that should the skin twisted wire should be greater than 3.0mm as Optical Fiber composite overhead Ground Wire (OPGW);
The parameter that the utility model obtains determines that according to statistics lightening activity data fragmentation district thunder and lightning transfer charge amount obtains.The lightening activity data depend on the historical accumulation data of lightning location system relatively in detail accurately, by amplitude of lightning current, thunderbolt density, thunderstorm day and thunderbolt number of times, calculate the size of charge transfer quantity.According to the transmission line caused by lightning strike data and the transmission line caused by lightning strike simulation calculation of each power supply administration's statistics, calculate the thunderstorm activity data that transmission line is along the line conversely, and then the thunder and lightning transfer charge amount data of calculating acquisition are revised the back acquisition.
According to " C " electric current thunderbolt analogue means, by testing maximum thunderbolt energy grade and the operation parameter characteristics of determining that particular locality OPGW should bear." C " electric current is called continuous current, and its longer duration, current amplitude are low, and is the most serious to the outer twisted wire influence of OPGW optical cable.For the waveform of " C " electric current, generally will the duration be decided to be 50～500ms, current amplitude location 0.1kA～1kA, corresponding discharge charge amount is decided to be 20～200C.According to different discharge charge amounts, the OPGW test product that different regions are used carries out lightning test, by the disconnected number of share of stock amount and the destruction situation of the outer strand of OPGW, can determine under the present OPGW manufacture level, be applied in the maximum thunderbolt energy grade that particular locality should bear.Simultaneously, can provide the parameter characteristic that particular locality is used OPGW according to the contrast test of the material of the outer twisted wire of difference, size etc.200C thunderbolt energy grade wherein and strand diameter are that existing OPGW manufacture level down must clear and definite key point greater than the outer twisted wire of the aluminium Baogang of 3.0mm.
Effect of the present utility model is:
1, outer twisted wire adopts aluminium-clad steel wire, has defendd the destruction of thunderbolt to the OPGW optical cable effectively, the maximum that can bear thunderbolt energy grade;
2, OPGW cable line strand diameter is greater than 3.0mm, increased the anti-intensity that fractures of cable line strand, prolonged the useful life of cable line, the utility model is also determined in strong lightening activity area, the many mountains of high height above sea level, the maximum thunderbolt energy grade unification that OPGW should bear is implemented by 200C, has determined the basic norm of the anti-thunder and lightning of OPGW cable line strand for strong lightening activity area, the many mountains of high height above sea level.
Further set forth the utility model content below in conjunction with embodiment.
Description of drawings: Fig. 1 is the utility model cross-sectional structure schematic diagram.
Embodiment:
The maximum thunderbolt energy grade unification that the utility model Optical Fiber composite overhead Ground Wire should bear is implemented by 200C; In the 500kV transmission line, adopt the outer twisted wire of aluminium-clad steel wire 1, and diameter that should skin twisted wire strand should be greater than 3.0mm as OPGW.
Embodiment
As Fig. 1, because the 0PGW poor-performing of anti-thunder that general electrical network is disconnected strand, in the lightning test of 150C, all there be disconnected strand, therefore the maximum thunderbolt energy grade unification that Optical Fiber composite overhead Ground Wire be should bear is implemented by 200C: outer twisted wire monofilament material is an aluminium-clad steel wire 1, the total aluminium-clad steel wire six roots of sensation, filament diameter is 4.0mm, and light unit 2 is enclosed in the six roots of sensation aluminium-clad steel wire 1, and whole cable outer diameter is 12.5mm.All do not have disconnected strand when the lightning test of 150C, 200C transfer charge amount, though the OPGW external diameter of this model structure is less, outer twisted wire monofilament is an aluminium-clad steel wire, and the monofilament strands linear diameter is very big, so its anti-thunderbolt performance is very good.
Claims (1)
1, the strong lightening activity in the many mountains of a kind of high height above sea level area Optical Fiber composite overhead Ground Wire is characterized in that: adopt the outer twisted wire (1) of aluminium-clad steel wire as Optical Fiber composite overhead Ground Wire in the 500kV transmission line, and strand diameter that should the skin twisted wire is greater than 3.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200816490U CN201251947Y (en) | 2008-09-10 | 2008-09-10 | Optical fiber composite overhead earth wire of high altitude hilly strong thunder and lightning active region |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200816490U CN201251947Y (en) | 2008-09-10 | 2008-09-10 | Optical fiber composite overhead earth wire of high altitude hilly strong thunder and lightning active region |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201251947Y true CN201251947Y (en) | 2009-06-03 |
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ID=40747620
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200816490U Expired - Lifetime CN201251947Y (en) | 2008-09-10 | 2008-09-10 | Optical fiber composite overhead earth wire of high altitude hilly strong thunder and lightning active region |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201251947Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20200126474A (en) * | 2019-04-29 | 2020-11-09 | 리오엠엔씨(주) | Optical fiber composite ground wire using composite material |
-
2008
- 2008-09-10 CN CNU2008200816490U patent/CN201251947Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20200126474A (en) * | 2019-04-29 | 2020-11-09 | 리오엠엔씨(주) | Optical fiber composite ground wire using composite material |
| KR102228020B1 (en) | 2019-04-29 | 2021-03-17 | 리오엠엔씨(주) | Optical fiber composite ground wire using composite material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090603 |
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| CX01 | Expiry of patent term |