CN103474903A - Method for entering 500kV common-tower double-circuit vertically-arranged compact transmission line equipotential - Google Patents
Method for entering 500kV common-tower double-circuit vertically-arranged compact transmission line equipotential Download PDFInfo
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- CN103474903A CN103474903A CN2013104071980A CN201310407198A CN103474903A CN 103474903 A CN103474903 A CN 103474903A CN 2013104071980 A CN2013104071980 A CN 2013104071980A CN 201310407198 A CN201310407198 A CN 201310407198A CN 103474903 A CN103474903 A CN 103474903A
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Abstract
The invention relates to a method for entering a 500kV common-tower double-circuit vertically-arranged compact transmission line equipotential. A tower comprises a tower head and a tower body. The tower head comprises a tower window and a cross arm arranged on the top of the tower window. A wire is arranged in the tower window. A live-working person climbs the tower, reaches the position with the height equal to that of the wire, moves to the bottom end of an insulator in the tower window from the edge of the tower window in parallel, and reaches the wire equipotential. By the adoption of the method for entering the 500kV common-tower double-circuit vertically-arranged compact transmission line equipotential, the live-working person has high safety in the process of 500kV common-tower double-circuit vertically-arranged compact transmission circuit live working.
Description
Technical field:
The present invention relates to a kind of live line working method of transmission line, specifically relate to a kind of equipotential method of the 500kV of entering common-tower double-return vertical arrangement compact transmission line.
Background technology:
In order to reduce the transmission line cost, reduce the power transmission line corridor width,, prior art has disclosed in restriction power-frequency overvoltage and switching overvoltage, is also updating the design of shaft tower, tries hard to make the size of transmission line compacter.Existing 500kV compact transmission line generally all adopts the inverted triangle spread pattern, but adopts the shared width in Compact Type Double Circuit Transmission Line shaft tower edge of three-phase conducting wire vertical arrangement significantly to reduce than the shared width in traditional Compact Type Double Circuit Transmission Line shaft tower edge
.
Live line working is a kind of key operation means of repairing inspection, transformation in project of transmitting and converting electricity, and this is playing a significant role aspect assurance power grid security.After 500kV common-tower double-return vertical arrangement compact transmission line puts into operation, live line working is equally also the necessary means that guarantees transmission line stable operation.But, because the tower head structure of common-tower double-return vertical arrangement compact transmission line is ever-changing, when live line working, the operating personnel passes in and out equipotential path and general compact line also has a great difference.Therefore, the inventor finds that there is the necessary particularity for this kind of overhead line structures through long-term observation, research, and a kind of live line working mode of safe and reasonable is provided.
Summary of the invention:
The purpose of this invention is to provide a kind of equipotential method of the 500kV of entering common-tower double-return vertical arrangement compact transmission line.The method makes the live line working personnel have very high fail safe in 500kV common-tower double-return vertical arrangement circuit compact transmission circuit live line working process.
For achieving the above object, the present invention is by the following technical solutions: a kind of equipotential method of 500kV common-tower double-return vertical arrangement compact transmission line that enters, this tower comprises tower head and tower body, described tower head comprises the cross-arm at tower window and its top, be provided with phase conductor, middle phase conductor and lower phase conductor along its axis direction in described tower window, described wire is arranged on V-shape insulator bottom, and is connected with described tower window both sides by described insulator, in described insulator both sides, is respectively equipped with grading ring; The live line working personnel carry equipment and are stepped on tower, it is characterized in that: comprise the following steps:
(1) live line working personnel Deng Ta arrives and described wire sustained height;
(2) the live line working personnel take aerial lift device with insulated arm and enter described tower window and carry out live line working.
A kind of equipotential method of 500kV common-tower double-return vertical arrangement compact transmission line that enters provided by the invention is characterized in that: described live line working personnel, from described tower window edge parallel to tower window inner insulator bottom, arrive the wire equipotential.
A kind of equipotential method of 500kV common-tower double-return vertical arrangement compact transmission line that enters provided by the invention, it is characterized in that: described tower window edge departs from described grading ring at the corresponding horizontal level of described tower window.
Another a kind of preferred equipotential method of 500kV common-tower double-return vertical arrangement compact transmission line that enters provided by the invention, it is characterized in that: when the system overvoltage multiple is 1.8 times, described band point operating personnel is on wire during the phase live line working, and keeping its crown is 2.80m to the minimum safe distance of upper cross-arm.
A kind of preferred equipotential method of 500kV common-tower double-return vertical arrangement compact transmission line that enters again provided by the invention, it is characterized in that: when the system overvoltage multiple is 1.8 times, described live line working personnel are in wire during the phase live line working, and alternate safe distance is 4.95m to the minimum of upper phase conductor to keep its crown.
Another a kind of preferred equipotential method of 500kV common-tower double-return vertical arrangement compact transmission line that enters provided by the invention, it is characterized in that: when the system overvoltage multiple is 1.8 times, described live line working personnel are under wire during the phase live line working, and alternate safe distance is 4.95m to the minimum of middle phase conductor to keep its crown.
Another a kind of preferred equipotential method of 500kV common-tower double-return vertical arrangement compact transmission line that enters provided by the invention is characterized in that: step on the front operation personnel inspection safety protective tools of tower and operating apparatus and whether have breakage, change if any breakage.
Another a kind of preferred equipotential method of 500kV common-tower double-return vertical arrangement compact transmission line that enters provided by the invention, it is characterized in that: described aerial lift device with insulated arm comprises dynamical system, mute driving system, control device and hydraulic pressure execution unit, described control device is connected with mute driving system respectively at dynamical system, and described dynamical system is connected with the hydraulic pressure execution unit respectively with mute driving system;
Described dynamical system comprises engine and oil pump device, and described oil pump device provides pressure source by engine for the hydraulic pressure execution unit;
Described mute driving system comprises power supply, direct current machine and quiet hydraulic pump, and described quiet hydraulic pump provides pressure source by power supply and direct current machine for the hydraulic pressure execution unit;
Described hydraulic pressure execution unit comprises jib and is arranged at the insulation bucket on jib.
Owing to having adopted technique scheme, the beneficial effect that the present invention obtains is:
The present invention can make 500kV common-tower double-return vertical arrangement Compact Transmission Line and Its Live Line Work personnel increase the combinational gap distance in entering wire equipotential process, improve switching impulse sparkover voltage, 500kV common-tower double-return vertical arrangement Compact Transmission Line and Its Live Line Work can be carried out safely, improve the safe and stable operation level of transmission line.
The accompanying drawing explanation
The tower window vertical view that Fig. 1 is common-tower double-return vertical arrangement compact transmission line of the present invention;
The tower window front view that Fig. 2 is common-tower double-return vertical arrangement compact transmission line of the present invention;
The turriform schematic diagram that Fig. 3 is common-tower double-return vertical arrangement compact transmission line of the present invention;
Wherein, 1-wire; 2-tower window one side; The 3-grading ring; The 4-insulator.
Embodiment
Below in conjunction with embodiment, the invention will be described in further detail.
Embodiment 1:
As Figure 1-3, this tower comprises tower head and tower body, described tower head comprises the cross-arm at tower window and its top, be provided with phase conductor, middle phase conductor and lower phase conductor along its axis direction in described tower window, described wire is arranged on V-shape insulator bottom, and be connected with described tower window both sides by described insulator, be respectively equipped with grading ring in described insulator both sides.Team is dressed insulation clothing and is fed into job site, and the work director reads out work ticket, the task of handing over work, explanation safety notice clarification in certain roles; The live line working personnel inspection checks tools for live working, if any breakage, need to be changed in time.When the work director confirms to carry out work, the live line working personnel have dressed a complete set of shielding clothing and safety cap and have worn power tool, carrying insulation transmits rope and starts to climb up tower from ground and to applicable position, safety belt is fastened, and the position of climbing arrival and wire sustained height 4., then take the insulation bucket, enter the tower window from tower window one side 2 and carry out live line working, enter in process, 1. the live line working personnel enter along tower window one side 2 edges from drifting out grading ring 3 corresponding horizontal level on tower window one side 2, and then parallel to the insulator bottom end vicinity 2., finally arrive need to carry out operation the equipotential position of wire 3., start to carry out operation, rather than directly by position, 4. in-position is 3..
As the live line working personnel, during in upper phase conductor live line working, when the system overvoltage multiple is 1.8 times, it is 2.80m to the minimum safe distance of upper cross-arm that the live line working personnel keep the own crown; As the live line working personnel, during in middle phase conductor live line working, when the system overvoltage multiple is 1.8 times, keeping the charged operating personnel crown is 4.95m to the alternate safe distance of the minimum of upper phase conductor; As the live line working personnel, during in lower phase live line working, when the system overvoltage multiple is 1.8 times, keeping the charged operating personnel crown is 4.95m to the alternate safe distance of the minimum of middle phase conductor.The live line working personnel, after finishing the work, turn back to ground.
The live line working personnel are when upper phase conductor, middle phase conductor and lower phase conductor operation, and its safe distance is measured and determined by simulated experiment.
Described aerial lift device with insulated arm comprises dynamical system, mute driving system, control device and hydraulic pressure execution unit, described control device is connected with mute driving system respectively at dynamical system, and described dynamical system is connected with the hydraulic pressure execution unit respectively with mute driving system;
Described dynamical system comprises engine and oil pump device, and described oil pump device provides pressure source by engine for the hydraulic pressure execution unit;
Described mute driving system comprises power supply, direct current machine and quiet hydraulic pump, and described quiet hydraulic pump provides pressure source by power supply and direct current machine for the hydraulic pressure execution unit;
Described hydraulic pressure execution unit comprises jib and is arranged at the insulation bucket on jib.
Finally should be noted that: above embodiment is only in order to illustrate that technical scheme of the present invention is not intended to limit, although with reference to above-described embodiment, the present invention is had been described in detail, those of ordinary skill in the field are to be understood that: still can modify or be equal to replacement the specific embodiment of the present invention, and do not break away from any modification of spirit and scope of the invention or be equal to replacement, it all should be encompassed in the middle of this claim scope.
Claims (8)
1. one kind enters the equipotential method of 500kV common-tower double-return vertical arrangement compact transmission line, this tower comprises tower head and tower body, described tower head comprises the cross-arm at tower window and its top, be provided with phase conductor, middle phase conductor and lower phase conductor along its axis direction in described tower window, described wire is arranged on V-shape insulator bottom, and be connected with described tower window both sides by described insulator, be respectively equipped with grading ring in described insulator both sides; The live line working personnel carry equipment and are stepped on tower, it is characterized in that: comprise the following steps:
(1) live line working personnel Deng Ta arrives and described wire sustained height;
(2) the live line working personnel take aerial lift device with insulated arm and enter described tower window and carry out live line working.
2. a kind of equipotential method of 500kV common-tower double-return vertical arrangement compact transmission line that enters as claimed in claim 1, it is characterized in that: described live line working personnel, from described tower window edge parallel to tower window inner insulator bottom, arrive the wire equipotential.
3. a kind of equipotential method of 500kV common-tower double-return vertical arrangement compact transmission line that enters as claimed in claim 2, it is characterized in that: described tower window edge departs from described grading ring at the corresponding horizontal level of described tower window.
4. a kind of equipotential method of 500kV common-tower double-return vertical arrangement compact transmission line that enters as claimed in claim 1, it is characterized in that: when the system overvoltage multiple is 1.8 times, described band point operating personnel is on wire during the phase live line working, and keeping its crown is 2.80m to the minimum safe distance of upper cross-arm.
5. a kind of equipotential method of 500kV common-tower double-return vertical arrangement compact transmission line that enters as claimed in claim 1, it is characterized in that: when the system overvoltage multiple is 1.8 times, described live line working personnel are in wire during the phase live line working, and alternate safe distance is 4.95m to the minimum of upper phase conductor to keep its crown.
6. a kind of equipotential method of 500kV common-tower double-return vertical arrangement compact transmission line that enters as claimed in claim 1, it is characterized in that: when the system overvoltage multiple is 1.8 times, described live line working personnel are under wire during the phase live line working, and alternate safe distance is 4.95m to the minimum of middle phase conductor to keep its crown.
7. a kind of equipotential method of 500kV common-tower double-return vertical arrangement compact transmission line that enters as claimed in claim 1, is characterized in that: step on the front operation personnel inspection safety protective tools of tower and operating apparatus and whether have breakage, change if any breakage.
8. a kind of equipotential method of 500kV common-tower double-return vertical arrangement compact transmission line that enters as claimed in claim 1, it is characterized in that: described aerial lift device with insulated arm comprises dynamical system, mute driving system, control device and hydraulic pressure execution unit, described control device is connected with mute driving system respectively at dynamical system, and described dynamical system is connected with the hydraulic pressure execution unit respectively with mute driving system;
Described dynamical system comprises engine and oil pump device, and described oil pump device provides pressure source by engine for the hydraulic pressure execution unit;
Described mute driving system comprises power supply, direct current machine and quiet hydraulic pump, and described quiet hydraulic pump provides pressure source by power supply and direct current machine for the hydraulic pressure execution unit;
Described hydraulic pressure execution unit comprises jib and is arranged at the insulation bucket on jib.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104071980A CN103474903A (en) | 2013-09-09 | 2013-09-09 | Method for entering 500kV common-tower double-circuit vertically-arranged compact transmission line equipotential |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104071980A CN103474903A (en) | 2013-09-09 | 2013-09-09 | Method for entering 500kV common-tower double-circuit vertically-arranged compact transmission line equipotential |
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| CN103474903A true CN103474903A (en) | 2013-12-25 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104659710A (en) * | 2015-02-06 | 2015-05-27 | 江苏省电力公司检修分公司 | Live working method for 500kV power transmission line roadside phase lead insulating bucket boom tractor |
| CN111342392A (en) * | 2020-03-27 | 2020-06-26 | 国网河南省电力公司平顶山供电公司 | Same-tower double-circuit transmission line interphase limiting live working method |
| CN113049923A (en) * | 2021-01-28 | 2021-06-29 | 南方电网科学研究院有限责任公司 | DC transmission line combined gap discharge characteristic test device and adjustment method |
-
2013
- 2013-09-09 CN CN2013104071980A patent/CN103474903A/en active Pending
Non-Patent Citations (1)
| Title |
|---|
| 范建斌等: "±800 kV直流输电线路带电作业方式的试验研究", 《电力建设》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104659710A (en) * | 2015-02-06 | 2015-05-27 | 江苏省电力公司检修分公司 | Live working method for 500kV power transmission line roadside phase lead insulating bucket boom tractor |
| CN111342392A (en) * | 2020-03-27 | 2020-06-26 | 国网河南省电力公司平顶山供电公司 | Same-tower double-circuit transmission line interphase limiting live working method |
| CN113049923A (en) * | 2021-01-28 | 2021-06-29 | 南方电网科学研究院有限责任公司 | DC transmission line combined gap discharge characteristic test device and adjustment method |
| CN113049923B (en) * | 2021-01-28 | 2022-04-19 | 南方电网科学研究院有限责任公司 | DC transmission line combined gap discharge characteristic test device and adjustment method |
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Application publication date: 20131225 |
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