CN2404248Y - Special lightning-protection & arc extinguishing device for high-voltage transmission line - Google Patents
Special lightning-protection & arc extinguishing device for high-voltage transmission line Download PDFInfo
- Publication number
- CN2404248Y CN2404248Y CN 99251729 CN99251729U CN2404248Y CN 2404248 Y CN2404248 Y CN 2404248Y CN 99251729 CN99251729 CN 99251729 CN 99251729 U CN99251729 U CN 99251729U CN 2404248 Y CN2404248 Y CN 2404248Y
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- lightning
- transmission line
- special
- lightning rod
- insulators
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- Expired - Fee Related
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Abstract
Present high-voltage transmission line overhead line iron towers are provided with overhead ground wires, but the accident of suffering from thunderstorm damage can happen often. Thunder voltage is too high, the insulating layers of insulators are broken due to lightning strike, and thus the accident can happen when an industrial frequency transmission line generates arc along the insulators. The top part of a tower of the utility model is provided with a special lightning rod connected with a resisting device in series, the overhead ground wires are lifted up to the upper end of the resisting device from the horizontal position of the original top part of the tower via the insulators in order to connect with the lightning rod into an entity, protection range is enlarged, the level of resisting thunder voltage is enhanced, and the accident due to the industrial frequency transmission line generating arc along the insulators is prevented. The utility model has the advantages of simple structure, economy, application, favorable performance for lightning protection and easy installation.
Description
The utility model relates to a kind of lightning arrester, a kind of lightning-arrest arc-extinction device that is used for ultra-high-tension power transmission line of definitely saying so.
At present, on the support iron tower of the high pressure overhead power line of China lightning conducter is housed all, but facts have proved that this lightning conducter do not stop thunderbolt harm, the puncture short that thunder and lightning causes happens occasionally, reason is that the overvoltage that thunder and lightning produces on lightning conducter punctures surrounding air, air ionization makes the short circuit of power transmission line power frequency, destroys the facility insulation and makes the transmission line tripping operation.
Goal of the invention of the present utility model is: provide a kind of can enlarge the lightning protection facility protection range, again can improve the anti-thunder and lightning level of circuit, prevent the lightning-arrest arc-extinction device of special use of power frequency short circuit.
Goal of the invention of the present utility model realizes by implementing following technical scheme:
The special-purpose lightning-arrest arc-extinction device of ultra-high-tension power transmission line, by the special-purpose lightning rod that is erected at the iron tower top, at the two piece supports insulative pillars of lightning rod both sides device on cat head, be contained in two insulation column tops, that it sets up the high voltage transmission line direction of direction and the underlying of iron tower top is consistent and have the most advanced and sophisticated lightning conducter of discharger up, and the assemblies such as lead that lightning conducter and lightning rod fuse constitute.Its essential characteristic is: set up the vertical special-purpose lightning rod that it connects an impedance device down at cat head, two lightning conducters are raised by two insulation columns and are isolated and link with the lightning rod on impedance device top and form one, and tower body is separated through impedance device with lightning conducter.Its supplementary features are to install discharger on lightning conducter.
Advantage of the present utility model is: compare with present lightning conducter device (Fig. 1), owing to having installed lightning rod and discharger has enlarged protection range; Because the isolation and the dividing potential drop of impedance device, effectively reduce the direct impacting with high pressure of thunder and lightning to tower body, make the thunder and lightning between tower body and high voltage transmission line be pressed with obvious reduction, it is minimum that the breakdown probability of air reduces to, (strength of discharge 200kA is following as calculated) can not cause the generation of power frequency short trouble generally speaking.
The utility model has following accompanying drawing:
Fig. 1 is the lightning conducter installation drawing on the present ultra-high-tension power transmission line
Fig. 2 is the special-purpose lightning-arrest arc-extinction device schematic diagram of ultra-high-tension power transmission line
Mark among the figure: 1 for high-voltage line supports iron tower, and 2 is A, B, C three-phase high-voltage power transmission line, and 3 is insulation column, and 4 is discharger, and 5 is lightning conducter, and 6 is the lightning rod impedance device, and 7 is lightning rod.
Embodiment:
Special-purpose lightning rod height 〉=1.5m,
The impedance device impedance is more than 20% of tower body earth resistance,
The high 2--10cm of discharger,
The spacing distance that two dischargers are installed on lightning conducter is 2-20m.
Though at present ultra-high-tension power transmission line overhead wire iron tower all is equipped with lightning conducter, the fault that suffers from mines happens occasionally, and mainly is that lightning voltage is too high, and thunderbolt causes insulator dielectric to destroy, and forms the power transmission line power current along the insulator arcing and the tripping operation fault that is short-circuited.The utility model is equipped with the special-purpose lightning rod of serial connection impedance device at cat head; and lightning conducter is lifted to impedance device upper end by former overhead water mean place by insulated column fuses with lightning rod; enlarged protection range; improved anti-lightning voltage level, prevented that the power frequency power transmission line from causing fault along the insulator arcing.This apparatus structure is simple, and is economic and practical, and lightning protection properties is good, and is easy for installation, is convenient to promote.
Claims (3)
1, the special-purpose lightning-arrest arc-extinction device of a kind of ultra-high-tension power transmission line, include lightning rod, impedance device, discharger, assemblies such as insulation column constitute, it is characterized in that: vertically device has hypomere to have the special-purpose lightning rod (7) of impedance device (6) at circuit (1) top, both sides device at cat head lightning rod (7) has the high voltage transmission line A that sets up direction and the underlying of iron tower top that is erected by two supports insulative pillars (3), B, the lightning conducter (5) of the belt discharge device of C direction unanimity, and the lightning rod (7) on two lightning conducters (5) and impedance device (6) top links and forms one.
2, according to the special-purpose lightning-arrest arc-extinction device of the described ultra-high-tension power transmission line of claim 1, it is characterized in that: on lightning conducter (5), be furnished with the discharger (4) that needle point makes progress.
3, according to the special-purpose lightning-arrest arc-extinction device of the described ultra-high-tension power transmission line of claim 2, it is characterized in that: its resistance value of lightning rod (7) hypomere serial connection impedance device is more than 20% of tower body earth resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99251729 CN2404248Y (en) | 1999-12-16 | 1999-12-16 | Special lightning-protection & arc extinguishing device for high-voltage transmission line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99251729 CN2404248Y (en) | 1999-12-16 | 1999-12-16 | Special lightning-protection & arc extinguishing device for high-voltage transmission line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2404248Y true CN2404248Y (en) | 2000-11-01 |
Family
ID=34036090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99251729 Expired - Fee Related CN2404248Y (en) | 1999-12-16 | 1999-12-16 | Special lightning-protection & arc extinguishing device for high-voltage transmission line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2404248Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007056914A1 (en) * | 2005-11-17 | 2007-05-24 | Yuzhang Guo | A LIGHTNING PROTECTING SYSTEM OF POWER TRANSMISSION LINESl |
| CN100498357C (en) * | 2007-09-14 | 2009-06-10 | 清华大学 | High voltage electricity transmission system thunder-proof property parameter test method |
| CN101093240B (en) * | 2006-06-23 | 2010-07-21 | 郭玉章 | Method for determining lightning strike point on electric power transmission line |
-
1999
- 1999-12-16 CN CN 99251729 patent/CN2404248Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007056914A1 (en) * | 2005-11-17 | 2007-05-24 | Yuzhang Guo | A LIGHTNING PROTECTING SYSTEM OF POWER TRANSMISSION LINESl |
| CN101093240B (en) * | 2006-06-23 | 2010-07-21 | 郭玉章 | Method for determining lightning strike point on electric power transmission line |
| CN100498357C (en) * | 2007-09-14 | 2009-06-10 | 清华大学 | High voltage electricity transmission system thunder-proof property parameter test method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |