CN104734102A - Alternating current transmission line iron tower - Google Patents
Alternating current transmission line iron tower Download PDFInfo
- Publication number
- CN104734102A CN104734102A CN201510162322.0A CN201510162322A CN104734102A CN 104734102 A CN104734102 A CN 104734102A CN 201510162322 A CN201510162322 A CN 201510162322A CN 104734102 A CN104734102 A CN 104734102A
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- CN
- China
- Prior art keywords
- lightning
- transmission line
- proof
- tower
- insulators
- 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.)
- Pending
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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
- H02G7/00—Overhead installations of electric lines or cables
- H02G7/20—Spatial arrangements or dispositions of lines or cables on poles, posts or towers
- H02G7/205—Installation of electric cables, extending along a pole
Landscapes
- Suspension Of Electric Lines Or Cables (AREA)
- Insulators (AREA)
Abstract
The invention discloses an alternating current transmission line iron tower which comprises a tower body and a cross arm at the top end of the tower body. The middle and the two ends of the lower side of the cross arm are each connected with a lightning-proof insulator. The lower ends of the lightning-proof insulators at the two ends are each connected with a side phase conductor. The lower end of the lightning-proof insulator in the middle is connected with a middle phase conductor. A compound fiber overhead ground wire is arranged on the waist of the tower body. The conductors are suspended on the lightning-proof insulators, so that the alternating current transmission line iron tower has the functions of suspension, insulation and lightning prevention at the same time. When ground lightning directly strikes the tower or the conductors, the lightning overvoltage will make the lightning-proof insulators move, impact energy is absorbed, the overvoltage is suppressed so as to protect the insulators against flashover, tripping of a transmission line is avoided, and power supply reliability is improved; the compound fiber overhead ground wire is located below the three phase conductors, so that the normal power communication function is achieved, the lightning overvoltage on the lightning-proof insulators can be decreased due to the coupling effect, the lightning-proof level is further improved, the lightning tripping frequency of the transmission line is effectively decreased, and the power supply reliability is improved.
Description
Technical field
The present invention relates to a kind of transmission line of alternation current steel tower, be specifically related to the lightning protection structure of a kind of transmission line of alternation current steel tower.
Background technology
Electrical network coverage is broad, and a lot of transmission line will pass through the region that some thunders and lightnings take place frequently.When meeting with Thunderstorm Weather, transmission line is easy to lightning stroke flashover occurs and causes trip accident, and statistics shows, transmission line lightning stroke tripping operation number of times exceedes 50% of total tripping operation number of times, is the biggest threat factor of electric power netting safe running.
For power transmission line lightning shielding protection, existing the most frequently used method installs overhead ground wire on steel tower, and its Main Function is that the wire of protection below prevents from attacked directly by thunder and lightning.Overhead ground wire need be installed on the special earth wire support in steel tower top.Earth wire support not only needs to consume tower material, and also in some cold districts may earth wire support be caused to rupture because the serious icing of overhead ground wire in winter is difficult to eliminate and damage, and causes power failure.
In recent years also risen and installed the leakage conductor lightening arresting method in parallel with insulator additional at electric power line pole tower, but newly-increased leakage conductor needs to increase new fixture on original shaft tower, and existing line lightning arrester size is long, the requirement of shaft tower window can not be met, there is the shortcoming that erection difficulty is large and cost of investment is high.
Summary of the invention
The object of the present invention is to provide one can ensure transmission line lightning protection effect thus improve power supply reliability, the iron tower structure of transmission line construction investment can be reduced again.
The invention discloses a kind of transmission line of alternation current steel tower, comprise the cross-arm on tower body and its top, tower body is equiped with composite fiber overhead ground wire, the two ends, downside of cross-arm and middle part are connected to anti-thunder insulator, phase conductor during the anti-thunder insulator lower end difference fillet phase conductor at two ends, middle anti-thunder insulator lower end connect.
Described composite fiber overhead ground wire is installed in the waist of described tower body.
The present invention adopts anti-thunder insulator to suspend wire in midair; make it have suspention, insulation function and lightning protection function concurrently simultaneously; when thunderbolt is attacked directly in shaft tower or wire; lightning overvoltage can make anti-thunder insulator action; apparatus with shock absorbing, plays to overvoltage the effect of clamping down on, thus protects whole insulator to avoid flashover; avoid causing transmission line trip accident, improve power supply reliability.Composite fiber overhead ground wire is directly installed in the waist of tower body, be positioned at the below of three-phase conducting wire, normal power communication function can be realized, the lightning overvoltage on anti-thunder insulator can be reduced again due to coupling, further raising lightning withstand level, effective reduction transmission line lightning stroke tripping operation number of times, improves power supply reliability.
Composite fiber overhead ground wire is directly installed on the waist of steel tower tower body, eliminates earth wire support and a common overhead ground wire at prior art steel tower top, saves material resources manpower, also eliminates the return loss that prior art two overhead ground wires are formed; The mechanical strength of tower body, much larger than the intensity of earth wire support, improves the resistance to ice ability of composite fiber overhead ground wire greatly, thus the overall anti-ice ability improving transmission line, improve power supply reliability further.The installation site of composite fiber overhead ground wire is also convenient to safeguard.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the present of invention.
Embodiment
As shown in Figure 1, the invention discloses a kind of transmission line of alternation current steel tower, comprise the cross-arm 2 on tower body 1 and its top, the two ends, downside of cross-arm 2 and middle part are connected to anti-thunder insulator 3, phase conductor 5 during the anti-thunder insulator 3 lower end difference fillet phase conductor 4 at two ends, middle anti-thunder insulator 3 lower end connect, the waist of tower body 1 is equiped with a composite fiber overhead ground wire 6.
When making steel tower, tower body and cross-arm all can adopt outsourcing piece, assemble as adopted the Hunan China tower material that manufacture of steel structure company produces energetically.The communication lightning-protection insulator that anti-thunder insulator buyable is produced as Hunan China province Xiang electricity Shi Yan Technology Co., Ltd..The steel reinforced aluminium conductor that three-phase conducting wire can adopt Chinese golden cup electrician Hengyang Cable Co., Ltd to produce.The conventional composite fiber overhead ground wire that composite fiber overhead ground wire can adopt Jiangsu Province, China Tong Guang optical cable Co., Ltd to produce.
Anti-thunder insulator is adopted to suspend wire in midair; make it have suspention, insulation function and lightning protection function concurrently simultaneously; when thunderbolt is attacked directly in shaft tower or wire; lightning overvoltage can make anti-thunder insulator action; apparatus with shock absorbing, plays to overvoltage the effect of clamping down on, thus protects whole insulator to avoid flashover; avoid causing transmission line trip accident, improve power supply reliability.Composite fiber overhead ground wire is directly installed in the waist of tower body, be positioned at the below of three-phase conducting wire, normal power communication function can be realized, the lightning overvoltage on anti-thunder insulator can be reduced again due to coupling, further raising lightning withstand level, effective reduction transmission line lightning stroke tripping operation number of times, improves power supply reliability.
Composite fiber overhead ground wire is directly installed on the waist of steel tower tower body, eliminates earth wire support and a common overhead ground wire at prior art steel tower top, saves material resources manpower, also eliminates the return loss that prior art two overhead ground wires are formed; The mechanical strength of tower body, much larger than the intensity of earth wire support, improves the resistance to ice ability of composite fiber overhead ground wire greatly, thus the overall anti-ice ability improving transmission line, improve power supply reliability further.The installation site of composite fiber overhead ground wire is also convenient to safeguard.
Claims (2)
1. a transmission line of alternation current steel tower, comprise the cross-arm on tower body and its top, tower body is equiped with composite fiber overhead ground wire, the two ends, downside of cross-arm and middle part are connected to insulator, phase conductor during the insulator lower end difference fillet phase conductor at two ends, middle insulator lower end connect, is characterized in that: described insulator is anti-thunder insulator.
2. transmission line of alternation current as claimed in claim 1 steel tower, is characterized in that: described composite fiber overhead ground wire is installed in the waist of described tower body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510162322.0A CN104734102A (en) | 2015-04-08 | 2015-04-08 | Alternating current transmission line iron tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510162322.0A CN104734102A (en) | 2015-04-08 | 2015-04-08 | Alternating current transmission line iron tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104734102A true CN104734102A (en) | 2015-06-24 |
Family
ID=53457698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510162322.0A Pending CN104734102A (en) | 2015-04-08 | 2015-04-08 | Alternating current transmission line iron tower |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104734102A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106567603A (en) * | 2016-10-27 | 2017-04-19 | 中国电力工程顾问集团西北电力设计院有限公司 | 750 kV wine glass composite cross arm tower |
| CN112942953A (en) * | 2021-03-31 | 2021-06-11 | 中国能源建设集团湖南省电力设计院有限公司 | Lead, direct current earthing pole circuit tangent tower that ground wire combines |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203166445U (en) * | 2012-03-22 | 2013-08-28 | 国家电网公司 | Device using coupling ground line to reduce lightning trip-out rate of transmission line |
| CN103956705A (en) * | 2014-04-10 | 2014-07-30 | 国家电网公司 | Full-coverage-type lightning protection device for overhead transmission lines |
| CN204464915U (en) * | 2015-04-08 | 2015-07-08 | 国家电网公司 | Transmission line of alternation current steel tower |
-
2015
- 2015-04-08 CN CN201510162322.0A patent/CN104734102A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203166445U (en) * | 2012-03-22 | 2013-08-28 | 国家电网公司 | Device using coupling ground line to reduce lightning trip-out rate of transmission line |
| CN103956705A (en) * | 2014-04-10 | 2014-07-30 | 国家电网公司 | Full-coverage-type lightning protection device for overhead transmission lines |
| CN204464915U (en) * | 2015-04-08 | 2015-07-08 | 国家电网公司 | Transmission line of alternation current steel tower |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106567603A (en) * | 2016-10-27 | 2017-04-19 | 中国电力工程顾问集团西北电力设计院有限公司 | 750 kV wine glass composite cross arm tower |
| CN112942953A (en) * | 2021-03-31 | 2021-06-11 | 中国能源建设集团湖南省电力设计院有限公司 | Lead, direct current earthing pole circuit tangent tower that ground wire combines |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150624 |
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| RJ01 | Rejection of invention patent application after publication |