CN102738732A - Construction method for 500kV line to span highly intensive high-voltage live lines - Google Patents
Construction method for 500kV line to span highly intensive high-voltage live lines Download PDFInfo
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- CN102738732A CN102738732A CN2011100872726A CN201110087272A CN102738732A CN 102738732 A CN102738732 A CN 102738732A CN 2011100872726 A CN2011100872726 A CN 2011100872726A CN 201110087272 A CN201110087272 A CN 201110087272A CN 102738732 A CN102738732 A CN 102738732A
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Abstract
The invention relates to a construction method for a 500kV line to span highly intensive high-voltage live lines, comprising the following steps: 1) installing a live spanning frame; 2) laying a protective net; 3) uncoiling conducting wires and ground wires; 4) tightening the wires; 5) installing accessories; and 6) removing insulation net protective facilities to finish line construction. Compared with the prior arts, the construction method of the invention has the advantages of a wide application range, great application prospects, high social and economic benefits, and the like.
Description
Technical field
The present invention relates to high-tension line and cross over the construction method on high density high pressure live wire road, especially relate to the construction method that the 500kV circuit is crossed over high density high pressure live wire road.
Background technology
Cross over 10 220kV transmission lines between 500kV Cao Jing change～south bridge variable power transmission line project 58#～61#; So the high density leap is real at home is rare; And the about 48m of 220kV transmission line height of high leap; Maximum one grade of nearly 409m of crossing span, because user's importance, the 220kV transmission line of being crossed over all can not have a power failure basically.Can't have a power failure and bring very large security risk to construction; Must formulate and big cross over the prioritization scheme of protective equipment and lead wire and earth wire erection construction and be equipped with the do not have a power failure construction equipment of the highdensity 220kV transmission line of leap of rational and effective; Accelerating construction progress; Improve construction efficiency, guarantee construction safety risk is eased down to minimum level.
Summary of the invention
The object of the invention be exactly provide in order to overcome the defective that above-mentioned prior art exists a kind of applied widely, application prospect is big, and has the construction method on the 500kV circuit leap high density high pressure live wire road of bigger social benefit and economic benefit.
The object of the invention can be realized through following technical scheme: the 500kV circuit is crossed over the construction method on high density high pressure live wire road, it is characterized in that this method may further comprise the steps: 1) the live across frame is installed; 2) lay catch net; 3) spreading lead wire and earth wire; 4) stringing; 5) installation accessories; 6) remove insulation net protective equipment, accomplish line construction.
Described step 1) is specially, and the live across frame is taked integral body to pull upright mode to install.
Compared with prior art, the present invention has the following advantages:
1, this method can be applicable to big span and crosses over many stringing construction protections that move extra high voltage networks to high-density, the construction of also crossing over many critical facilitys such as viaduct and marshaling yard applicable to similar big span.
2, for the standardization of crossing over the construction of high density high pressure and extra high voltage network stringing construction protection facility, routinize and establish the theory and practice basis, application prospect is boundless.
3, bigger social benefit and economic benefit are arranged.
Embodiment
Below in conjunction with specific embodiment the present invention is elaborated.
Embodiment
The 500kV circuit is crossed over the construction method on high density high pressure live wire road, and this method may further comprise the steps:
Step 1) live across frame is installed
The live across frame of 900 * 900mm * 32m takes integral body to pull upright mode, pulls upright good back and on the leap frame, two-layer backguy is set.It is the wide pole of 600*600*28m that the pole support bar adopts specification, is installed on 58# tower 70m high position conduct coil holder one end more,
Step 2) lays catch net
In order to prevent to lead, to fall in the construction of ground wire before journey and stringing are let slip in exhibition, lay the Di Nima bearing rope and the fiberglass rod net is protected.Establish special messenger's inspection in the work progress, guarantee the height of two 220kV ground wires is controlled at more than the 2m.
59#～61# crosses over four power failure 220kV circuits, and hard system insulated tube wrapping lead wire and earth wire is adopted in the permission back that has a power failure,
The step 3) spreading lead wire and earth wire
After block finishes; Utilize online nylon endless rope to lead logical and lift-off in each phase Ф 15 leads rope; Once more inspection comprise the stretching field all devices ground connection work whether effectively, after whether each anchoring position meet specification requirement, can tension traction Ф 26 rope tractions rope, and then showing and placing of the tension is led, ground wire and optical cable; Should be undertaken by the 1.8t laying tension of defined in " stringing technology measure " during unwrapping wire; And note the position of lead at any time, guarantee to leave the distance of catch net 1m, and 4 root leads are all in the protection range of catch net.Because of 59# is big corner, exhibition is let slip Cheng Zhongxu and is strengthened control that lead is crossed the 59# sister block, when especially towing plate is crossed coaster, need control well coaster in advance partially and towing plate cross the speed of coaster.
The step 4) stringing
Lead leads to 56#, at 56# and 61# two respectively with lead anchor in ground, pine is hung after the crimping, then at the #59 stringing, 58#～59# and 59#～60# be as visual span of sag, sag that should strict this grade of control adheres to specification.For #59 balance hanging wire, take the mode of " disconnected is hung ", the back anchoring of forbidding to break is spent the night.Tightly, the hanging wire Work tool all adopts dual fail-safe, guarantees construction safety.
The step 5) annex is installed
When annex is installed, should note the ground connection of working well, the probability that drops for the minimizing instrument in the 58#-61# shelves does not use the rope chi to measure the conductor spacer distance, and adopts theodolite shelves fit on measurement to print.For reducing the operating time that crosses over live wire road job step, after Construction of Tension Stringing finishes, all accomplish the 58# annex and install in the very first time.When the 58# annex is installed, below lead,, prevent because of the influence of construction operation error to crossed line around Ф 21 insurance steel cables.
Step 6) is removed insulation net protective equipment
Support body is partly removed: after operations such as unwrapping wire, stringing, annex installation are accomplished, and promptly dismountable whole insulation net protective equipments.Method for dismounting is the inverse process of installation method.The height of noting whole process maintenance and 220kV ground wire is more than 2m.
Claims (2)
1.500kV circuit is crossed over the construction method on high density high pressure live wire road, it is characterized in that this method may further comprise the steps:
1) the live across frame is installed;
2) lay catch net;
3) spreading lead wire and earth wire;
4) stringing;
5) installation accessories;
6) remove insulation net protective equipment, accomplish line construction.
2. 500kV circuit according to claim 1 is crossed over the construction method on high density high pressure live wire road, it is characterized in that described step 1) is specially, and the live across frame is taked integral body to pull upright mode to install.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100872726A CN102738732A (en) | 2011-04-08 | 2011-04-08 | Construction method for 500kV line to span highly intensive high-voltage live lines |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100872726A CN102738732A (en) | 2011-04-08 | 2011-04-08 | Construction method for 500kV line to span highly intensive high-voltage live lines |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102738732A true CN102738732A (en) | 2012-10-17 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100872726A Pending CN102738732A (en) | 2011-04-08 | 2011-04-08 | Construction method for 500kV line to span highly intensive high-voltage live lines |
Country Status (1)
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| CN (1) | CN102738732A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104577875A (en) * | 2014-12-29 | 2015-04-29 | 国家电网公司 | Construction method of block crossover frame cable of power circuit |
| CN106025923A (en) * | 2016-07-05 | 2016-10-12 | 绍兴市大兴电气承装有限公司 | Construction method of tension type power line protection net |
| CN107196237A (en) * | 2017-04-29 | 2017-09-22 | 中国能源建设集团安徽电力建设第工程有限公司 | A kind of laying method of current collection line cord |
| CN107248711A (en) * | 2017-04-29 | 2017-10-13 | 中国能源建设集团安徽电力建设第工程有限公司 | One kind collection electric line ground wire erection method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6450705A (en) * | 1987-08-19 | 1989-02-27 | Hitachi Cable | Stringing method for long-span transmission line |
| CN1288276A (en) * | 2000-08-02 | 2001-03-21 | 国家电力公司电力建设研究所 | Method and equipment of stride across construction utilizing overhead cableway |
| JP2004140917A (en) * | 2002-10-17 | 2004-05-13 | Toko Electrical Construction Co Ltd | Stringing protector and stringing method |
| CN101442194A (en) * | 2008-09-11 | 2009-05-27 | 山西省电力公司送变电工程公司 | Spanning method for ultra, extra high voltage line construction without crossover frame |
-
2011
- 2011-04-08 CN CN2011100872726A patent/CN102738732A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6450705A (en) * | 1987-08-19 | 1989-02-27 | Hitachi Cable | Stringing method for long-span transmission line |
| CN1288276A (en) * | 2000-08-02 | 2001-03-21 | 国家电力公司电力建设研究所 | Method and equipment of stride across construction utilizing overhead cableway |
| JP2004140917A (en) * | 2002-10-17 | 2004-05-13 | Toko Electrical Construction Co Ltd | Stringing protector and stringing method |
| CN101442194A (en) * | 2008-09-11 | 2009-05-27 | 山西省电力公司送变电工程公司 | Spanning method for ultra, extra high voltage line construction without crossover frame |
Non-Patent Citations (3)
| Title |
|---|
| 吴庆新: ""500kV杨杨线带电跨越220kV有电线路施工"", 《上海电力》, no. 6, 31 December 2003 (2003-12-31), pages 528 - 531 * |
| 李春波: ""500kV线路全带电跨越架线施工"", 《吉林电力》, no. 1, 28 February 2002 (2002-02-28), pages 14 - 17 * |
| 苏卫东: ""±500kV不停电跨越架的使用"", 《西北电力技术》, vol. 31, no. 4, 28 August 2003 (2003-08-28), pages 18 - 20 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104577875A (en) * | 2014-12-29 | 2015-04-29 | 国家电网公司 | Construction method of block crossover frame cable of power circuit |
| CN106025923A (en) * | 2016-07-05 | 2016-10-12 | 绍兴市大兴电气承装有限公司 | Construction method of tension type power line protection net |
| CN107196237A (en) * | 2017-04-29 | 2017-09-22 | 中国能源建设集团安徽电力建设第工程有限公司 | A kind of laying method of current collection line cord |
| CN107248711A (en) * | 2017-04-29 | 2017-10-13 | 中国能源建设集团安徽电力建设第工程有限公司 | One kind collection electric line ground wire erection method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE GRID CORPORATION OF CHINA Effective date: 20121205 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20121205 Address after: 200122 Shanghai City, Pudong New Area source deep road, No. 1122 Applicant after: Shanghai Electric Power Corporation Applicant after: State Grid Corporation of China Address before: 200122 Shanghai City, Pudong New Area source deep road, No. 1122 Applicant before: Shanghai Electric Power Corporation |
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| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20121017 |