CN101888070B - 10KV bypass cable operation method - Google Patents
10KV bypass cable operation method Download PDFInfo
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- CN101888070B CN101888070B CN2009100513321A CN200910051332A CN101888070B CN 101888070 B CN101888070 B CN 101888070B CN 2009100513321 A CN2009100513321 A CN 2009100513321A CN 200910051332 A CN200910051332 A CN 200910051332A CN 101888070 B CN101888070 B CN 101888070B
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- bypass cable
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- pass switch
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Abstract
The invention relates to a 10KV bypass cable operation method, which comprises the steps of ancillary facilities mounting, bypass cable erection, bypass fuse protector mounting, bypass switch mounting and nuclear phase and load transfer. The invention replaces the common mode that the line repair is carried out only under the power-off condition, thus providing a safe, reliable, effective and convenient approach for improving the power supply reliability and for the power supply reliability in China to achieve the international advanced level, and having obvious economic and social benefits.
Description
Technical field
The present invention relates to the distribution line live working method in a kind of electric power system, relate in particular to a kind of 10 KV bypass cable operation methods.
Background technology
Because the restriction of prior art in the comprehensive maintenance of 10kV distribution line, must have a power failure to the user, just can carry out conventional form of construction work, therefore usually makes enterprise and numerous residents suffer the trouble that causes because of power failure.
Summary of the invention
In order to overcome the deficiency that above-mentioned prior art exists; The present invention aims to provide a kind of 10 KV bypass cable operation methods; To solve always in the comprehensive maintenance of 10kV distribution line the conventional form of construction work that must under the power failure condition, carry out the user, make enterprise and numerous residents avoid having a power failure and the trouble that causes.
A kind of 10 KV bypass cable operation methods of the present invention may further comprise the steps:
A., affiliated facility is installed: the bypass cable support is installed respectively, the intermediate studdle support is installed, is taken temporary guy in strain insulator shelves electric pole two sides on straight line pole on the job site bar; The bypass cable bearing rope is installed; And on mounting rod on the electric pole of bypass cable importing place fixed support, simultaneously placing fixed support on the ground near the place, ground;
B. set up bypass cable: import the every 2m of coaster and place a movable block; Connect through connection cord between said movable block; Said bypass cable imports movable block through the bearing rope traction; And pass fixed support on the bar described in the steps A, the transition joint with said bypass cable simultaneously firmly connects, and adopts bearing rope to reinforce in said transition joint two sides;
C., the bypass fuse is installed: several bypass fuses are installed on the bypass cable described in the step B;
D., by-pass switch is installed: at the two end strain insulator shelves of bypass cable described in the step B one 10 KV bypass switches are installed respectively, and said by-pass switch is placed unzipped positions, with the by-pass switch earthing of casing;
E. nuclear phase: incoming call side by-pass switch among the incoming call said bypass fuse of side and the step D among the step of the closing C, disconnection receives electric side apparatus, carries out nuclear phase to receiving electric side apparatus both sides;
F. load transfer: the bypass fuse and the by-pass switch that close and receive electric side; Relevant devices with reason overhead transmission line power supply in the strain insulator shelves; Change into by the power supply of the bypass cable described in the step B, the overhead transmission line of needs maintenance is out of service, carry out line maintenance and multiple labour operation.
In above-mentioned 10 KV bypass cable operation methods, described bypass cable rated current is less than or equal to 150A, and rated voltage is 10kv.
In above-mentioned 10 KV bypass cable operation methods, the length of said bypass cable is 350m.
Owing to adopted above-mentioned technical solution, the present invention passes through with the lead cross-over connection of temporary cable with the working region, and is transported to the user in the working region temporarily; The working region lead is isolated; Power failure work in the working region, but the user do not have a power failure, and recovers former wiring state after hours again; Thereby the trouble that makes enterprise and numerous residents avoid having a power failure and cause has good social benefit and economic benefit.
Description of drawings
Fig. 1 is the operation chart of a kind of 10 KV bypass cable operation methods of the present invention.
Embodiment
As shown in Figure 1, a kind of 10 KV bypass cable operation methods of the present invention may further comprise the steps:
At first; The bypass cable support is installed on the job site bar respectively, the intermediate studdle support is installed on straight line pole, is taken temporary guy in strain insulator shelves electric pole two sides; The bypass cable bearing rope is installed; And on mounting rod on the electric pole of bypass cable importing place fixed support, simultaneously placing fixed support on the ground near the place, ground.
Secondly, place a movable block through importing the every 2m of coaster, connect through connection cord between said movable block, bypass cable 1 passes through 10mm
2Bearing rope traction imports movable block, and passes fixed support on the described bar (this moment can be artificial to hold in the palm cable, to prevent block), and the transition joint with bypass cable 1 simultaneously firmly connects, and adopts bearing rope to reinforce in said transition joint two sides; In this process, three-phase bypass cable 1 can be placed simultaneously, and adopts in the people or hand strand mill or motor-driven strand mill mode realize.Set up the back reply bypass cable that finishes and carry out electric examination.Then, several bypass fuses are installed on bypass cable 1; At bypass cable 1 two end strain insulator shelves, prompt delivery electricity side with receive on the electric side two side segmented poles one 10 KV bypass switches 2 to be installed respectively, and by-pass switch 2 is placed unzipped positions, with by-pass switch 2 earthings of casing.
Then, said bypass fuse of the incoming call side of closing and incoming call side by-pass switch 2, disconnection receives electric side apparatus, carries out nuclear phase to receiving electric side apparatus both sides.
After nuclear phase finishes; The bypass fuse and the by-pass switch 2 that close and receive electric side; With the relevant devices of reason overhead transmission line power supply in the strain insulator shelves (comprising that pole transformer on the circuit, station, user worker-house house lead in cable, construction are with facilities such as transformers); Change into by bypass cable 1 power supply, the overhead transmission line of needs maintenance is out of service.
After described overhead transmission line out of service being carried out exchange wire and changing other equipment, (comprise that electric pole, pole transformer, 10 kilovolts are from relevant devices such as the fuse that falls, 90 ° of angle poles, extension bars); Change described overhead transmission line into operation from maintenance at last; And will return to by the overhead transmission line power supply by the equipment of described bypass cable power supply, make bypass cable out of service.
Bypass cable among the present invention, promptly 10kV flexible insulation cable is as a kind of " instrument ", and it is different from common single-core cable and three cores twist cable mutually, and its maximum difference is in softness, and stands alternating bending.The length of this bypass cable is 350m, can cross over 9 shelves continuously, and its rated current is less than or equal to 150A, and rated voltage is 10kV, can prevent that short circuit current from damaging bypass cable and protection personal safety through protection component is installed on bypass cable.
When setting up three-phase bypass cable 1; Bearing rope should be able to bear the weight of bypass cable; And the coaster that carries bypass cable passes through on rope smoothly, so this bearing rope has intensity height (the maximum Fracture Force of φ 12 bearing ropes can reach 4.5 tons), the little characteristics such as (less than 5%) of expansion and contraction.
For the user is not had a power failure in the gap; The present invention has adopted the on-load handoff technique; And to the separating of 10kV house lead in cable, pole transformer low-tension supply and bypass van-type transformer low voltage power supply, and operation all adopts the heat to fall method, thereby guarantee that the user does not have a power failure in the operation overall process, solved the technical barrier of maximum in the construction over the years; Replaced the conventional maintenance mode that line maintenance must carry out the user under the power failure condition; For improving power supply reliability, reaching advanced world standards for China's power supply reliability provides safe, reliable and effective, fast way, has tangible economic results in society.
Above embodiment specifies the present invention, and those skilled in the art can make the many variations example to the present invention according to above-mentioned explanation.Thereby some details among the embodiment should not constitute qualification of the present invention, and the scope that the present invention will define with appended claims is as protection scope of the present invention.
Claims (3)
1. KV bypass cable operation method is characterized in that it may further comprise the steps:
A., affiliated facility is installed: the bypass cable support is installed respectively, the intermediate studdle support is installed, is taken temporary guy in strain insulator shelves electric pole two sides on straight line pole on the job site bar; The bypass cable bearing rope is installed simultaneously; And on mounting rod on the electric pole of bypass cable importing place fixed support, simultaneously placing fixed support on the ground near the place, ground;
B. set up bypass cable: import the every 2m of coaster and place a movable block; Connect through connection cord between said movable block; Said bypass cable imports movable block through the bearing rope traction; And pass fixed support on the bar described in the steps A, the transition joint with said bypass cable simultaneously firmly connects, and adopts bearing rope to reinforce in said transition joint two sides;
C., the bypass fuse is installed: several bypass fuses are installed on the bypass cable described in the step B;
D., by-pass switch is installed: at the two end strain insulator shelves of bypass cable described in the step B one 10 KV bypass switches are installed respectively, and said by-pass switch is placed unzipped positions, with the by-pass switch earthing of casing;
E. nuclear phase: incoming call side by-pass switch among the incoming call said bypass fuse of side and the step D among the step of the closing C, disconnection receives electric side apparatus, carries out nuclear phase to receiving electric side apparatus both sides;
F. load transfer: the bypass fuse and the by-pass switch that close and receive electric side; Relevant devices with reason overhead transmission line power supply in the strain insulator shelves; Change into by the power supply of the bypass cable described in the step B, the overhead transmission line of needs maintenance is out of service, carry out line maintenance and multiple labour operation.
2. 10 KV bypass cable operation methods according to claim 1 is characterized in that, described bypass cable rated current is less than or equal to 150A, and rated voltage is 10kv.
3. 10 KV bypass cable operation methods according to claim 1 and 2 is characterized in that, the length of said bypass cable is 350m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100513321A CN101888070B (en) | 2009-05-15 | 2009-05-15 | 10KV bypass cable operation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009100513321A CN101888070B (en) | 2009-05-15 | 2009-05-15 | 10KV bypass cable operation method |
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| Publication Number | Publication Date |
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| CN101888070A CN101888070A (en) | 2010-11-17 |
| CN101888070B true CN101888070B (en) | 2012-07-04 |
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| CN2009100513321A Active CN101888070B (en) | 2009-05-15 | 2009-05-15 | 10KV bypass cable operation method |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102480109A (en) * | 2010-11-29 | 2012-05-30 | 哈尔滨电业局 | Method for replacing 10 kV distribution line lead with load |
| CN103078268A (en) * | 2012-12-28 | 2013-05-01 | 上海市电力公司 | Uninterrupted power overhauling method of 10kV cables between two annular net cabinets |
| CN104466788B (en) * | 2013-09-23 | 2018-05-08 | 国家电网公司 | The detection method and device of distribution overhead line |
| CN104377623A (en) * | 2014-11-27 | 2015-02-25 | 国家电网公司 | Vehicle-mouthed overhead cable layout device |
| CN104868398B (en) * | 2015-05-22 | 2017-10-17 | 国网江苏省电力公司常州供电公司 | The built on stilts laying street crossing device of 10KV bypass cables |
| CN113889900A (en) * | 2021-08-30 | 2022-01-04 | 国网浙江省电力有限公司嘉兴供电公司 | Construction method for live migration strain tower and wire of distribution network |
| CN114498313B (en) * | 2022-02-09 | 2023-02-03 | 广东韶钢松山股份有限公司 | Flexible connecting bus bridge and switch cabinet transitional connection method |
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| CN1224262A (en) * | 1999-01-25 | 1999-07-28 | 西宁供电局 | Live-wire work method for 10 KV multiloop insulated conductor |
| CN101064431A (en) * | 2006-04-29 | 2007-10-31 | 江苏省电力公司常州供电公司 | Method for replacing 10kV distributing transformer with charge |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1224262A (en) * | 1999-01-25 | 1999-07-28 | 西宁供电局 | Live-wire work method for 10 KV multiloop insulated conductor |
| CN101064431A (en) * | 2006-04-29 | 2007-10-31 | 江苏省电力公司常州供电公司 | Method for replacing 10kV distributing transformer with charge |
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| CN101888070A (en) | 2010-11-17 |
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Inventor after: Chen Weiming Inventor after: Ding Wenyuan Inventor after: Zhang Jinxiu Inventor after: Lan Geng Inventor after: He Guoxing Inventor after: He Baolong Inventor after: Li Zujiang Inventor after: Hu Da Inventor after: Huang Zheng Inventor after: Zhu Fei Inventor before: Chen Weiming Inventor before: Zhang Jinxiu Inventor before: Lan Geng Inventor before: He Guoxing Inventor before: He Baolong Inventor before: Li Zujiang Inventor before: Hu Da Inventor before: Huang Zheng |
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Free format text: CORRECT: INVENTOR; FROM: CHEN WEIMING ZHANG JINXIU LAN GENG HE GUOXING HE BAOLONG LI ZUJIANG HU DA HUANG ZHENG TO: CHEN WEIMING ZHANG JINXIU LAN GENG HE GUOXING HE BAOLONG LI ZUJIANG HU DA HUANG ZHENG ZHU FEI DING WENYUAN |
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