CN103715630B - The method entering same-tower double-circuit alternating-current transmission line tangent tower equal potential - Google Patents
The method entering same-tower double-circuit alternating-current transmission line tangent tower equal potential Download PDFInfo
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- CN103715630B CN103715630B CN201310690570.3A CN201310690570A CN103715630B CN 103715630 B CN103715630 B CN 103715630B CN 201310690570 A CN201310690570 A CN 201310690570A CN 103715630 B CN103715630 B CN 103715630B
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Abstract
The invention provides a kind of method entering same-tower double-circuit alternating-current transmission line tangent tower equal potential, the method includes: operating personnel arrives at the position parallel with the electrical body of HVAC power transmission line and/or the position closest with electrical body by the tangent tower of ground connection, and at least keep the first distance, wherein, the first distance is the distance of operating personnel to electrical body；Operating personnel leaves tangent tower, close to electrical body, and at least keeps second distance, and wherein, second distance is tangent tower to the distance of operating personnel and operating personnel to the distance sum of electrical body；Operating personnel arrives electrical body, and at least keeps the 3rd distance, wherein, the distance that the 3rd distance is operating personnel to tangent tower.By the present invention, solve operating personnel under ac high-voltage, high altitude environment and be susceptible to the problem injured of getting an electric shock, and then ensure that the personal safety of operating personnel.
Description
Technical field
The present invention relates to security fields, in particular to a kind of same-tower double-circuit alternating-current transmission line tangent tower equal potential of entering
Method.
Background technology
Qinghai-Tibet alternating current-direct current networking project, alternating current circuit is from the east of Qinghai Sun-Moon Mountain transformer station (height above sea level is 2408m), west to bavin
Reaching wood current conversion station (height above sea level is 2878m), total track length 700km, height above sea level is between 2680～4000m, and mean sea level is 3400m；
Xinjiang exchanges networking project Qinghai section with northwest major network, and Qaidam current conversion station-fish card power switch station (height above sea level is 3450m)-shoal becomes
Power station, Qinghai province's circuit overall length 400km, more than mean sea level 3200m.Straight line pole be horizontal I type insulator chain structure,
6 split conductors.For this special circumstances, its electric pressure is defined as 750kV.
Livewire work is to ensure that the necessary means of transmission line of electricity safe and stable operation, and therefore, Qinghai-Tibet and blue or green new ac transmission engineering are thrown
After fortune, it is also desirable to carrying out livewire work work, i.e. operating personnel is not in the case of circuit has a power failure, enter isoelectric level and circuit is set
For overhauling.Enter the equipotential engineering of wire from shaft tower earth potential operating personnel, if method improper it may happen that
Get an electric shock and injure.For Qinghai-Tibet and blue or green new exchange this situation of networking project, it is necessary to use the entrance etc. of safety according to its special characteristic
Electric potential method.
For in correlation technique under ac high-voltage, high altitude environment operating personnel be susceptible to get an electric shock injury problem, the most still
Effective solution is not proposed.
Summary of the invention
It is susceptible to, for operating personnel under ac high-voltage, high altitude environment, the problem injured of getting an electric shock, the invention provides one
The method entering same-tower double-circuit alternating-current transmission line tangent tower equal potential, at least to solve the problems referred to above.
According to an aspect of the invention, it is provided a kind of method entering same-tower double-circuit alternating-current transmission line tangent tower equal potential,
Including: operating personnel arrives at the position parallel with the electrical body of HVAC power transmission line and/or with described by the tangent tower of ground connection
The position that electrical body is closest, and at least keep the first distance, wherein, described first distance is the most described for described operating personnel
The distance of electrical body, described tangent tower includes: lower phase cross-arm, middle phase cross-arm and upper phase cross-arm, is respectively used to hang described exchange
The lower phase electrical body of transmission line of electricity, middle phase electrical body and upper phase electrical body；Described operating personnel leaves described tangent tower, to described
Electrical body is close, and at least keeps second distance, wherein, described second distance be described tangent tower to described operating personnel away from
From the distance sum with described operating personnel to described electrical body；Described operating personnel arrives described electrical body, and at least keeps
3rd distance, wherein, described 3rd distance is the distance of described operating personnel to described tangent tower.
Preferably, described first distance, second distance and the 3rd distance are to determine according to maximum working voltage and input operating range
's.
Preferably, described maximum working voltage and input operating range are height above sea level and the air in the region arranged according to described tangent tower
Density determines.
Preferably, operating personnel by the tangent tower of ground connection arrive at the position parallel with the electrical body of HVAC power transmission line and/
Or the position closest with described electrical body, and at least keep the first distance to include: described operating personnel at described tangent tower
Lower phase tower body in the case of, be at least maintained at the described operating personnel of lower phase tower body of described tangent tower to described lower phase electrical body
Distance be described first distance；Described operating personnel in the case of the middle phase tower body of described straight line tower body, at least it is maintained at
The distance of the middle phase tower body of described tangent tower or the described operating personnel of described lower phase cross-arm extremely described middle phase electrical body is described first
Distance；Described operating personnel in the case of the upper phase tower body of described straight line tower body, at least it is maintained at the upper phase of described tangent tower
The described operating personnel of tower body or described middle phase cross-arm is described first distance to the distance of described upper phase electrical body.
Preferably, described operating personnel leaves described tangent tower, close to described electrical body, and at least keeps described second distance
Including: described operating personnel from the lower phase tower body of described tangent tower in the case of described lower phase electrical body is close, at least keep
The lower phase tower body of described tangent tower to the distance of described operating personnel and described operating personnel to the distance of described lower phase electrical body it
With for described second distance；Described operating personnel from the middle phase tower body of described tangent tower to the close situation of described middle phase electrical body
Under, at least keep distance and the described operating personnel extremely described middle facies tract of the middle phase tower body extremely described operating personnel of described tangent tower
The distance sum of electricity body is described second distance, and keeps the distance of described lower phase cross-arm extremely described operating personnel and described operation
Personnel are described second distance to the distance sum of described middle phase electrical body；Described operating personnel from the Shang Xiangta of described tangent tower
Body in the case of described upper phase electrical body is close, at least keep the upper phase tower body of described tangent tower to described operating personnel distance,
It is described second distance with the distance sum of described operating personnel to described upper phase electrical body, and keeps described middle phase cross-arm to described
The distance of operating personnel is described second distance with the distance sum of described operating personnel to described upper phase electrical body.
Preferably, described operating personnel arrives described electrical body, and at least keeps described 3rd distance to include: described operation people
Member arrives in the case of described lower phase electrical body, at least keep described operating personnel to the lower phase tower body of described tangent tower distance,
Described operating personnel is respectively described 3rd distance to the distance of described lower phase cross-arm；Described middle facies tract is arrived described operating personnel
In the case of electricity body, at least keep described operating personnel to the distance of middle phase tower body of described tangent tower, described operating personnel to institute
State the distance of lower phase cross-arm, and the distance of described operating personnel extremely described middle phase cross-arm is respectively described 3rd distance；Described
In the case of operating personnel arrives described upper phase electrical body, at least keep described operating personnel to the upper phase tower body of described tangent tower
Distance, the distance of described operating personnel to described middle phase cross-arm, and described operating personnel is to the distance difference of described upper phase cross-arm
For described 3rd distance.
Preferably, described HVAC power transmission line is ± 750kV transmission line of alternation current.
Preferably, described operating personnel dresses a complete set of shielding clothing.
By the present invention, operating personnel is used to be arrived at parallel with the electrical body of HVAC power transmission line by the tangent tower of ground connection
Position and/or the position closest with electrical body, and at least keep the first distance, wherein, the first distance is operating personnel's extremely band
The distance of electricity body, tangent tower includes: lower phase cross-arm, middle phase cross-arm and upper phase cross-arm, is respectively used to hang transmission line of alternation current
Lower phase electrical body, middle phase electrical body and upper phase electrical body；Operating personnel leaves tangent tower, close to electrical body, and at least keeps
Second distance, wherein, second distance is tangent tower to the distance of operating personnel and operating personnel to the distance sum of electrical body；
Operating personnel arrives electrical body, and at least keeps the 3rd distance, wherein, the distance that the 3rd distance is operating personnel to tangent tower
Mode.Solve operating personnel under ac high-voltage, high altitude environment and be susceptible to the problem injured of getting an electric shock, and then ensure that work
The personal safety of industry personnel.
Accompanying drawing explanation
Accompanying drawing described herein is used for providing a further understanding of the present invention, constitutes the part of the application, and the present invention shows
Meaning property embodiment and explanation thereof are used for explaining the present invention, are not intended that inappropriate limitation of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart entering same-tower double-circuit alternating-current transmission line tangent tower equal potential method according to embodiments of the present invention；
Fig. 2 is 750kV transmission line of alternation current tangent tower structural representation according to the preferred embodiment of the invention；
Fig. 3 is at the schematic diagram of the lower phase tower body of tangent tower according to preferred embodiment of the present invention operating personnel；
Fig. 4 is the lower phase tower body schematic diagram close to lower phase electrical body leaving tangent tower according to preferred embodiment operating personnel of the present invention；
Fig. 5 is the schematic diagram arriving at lower phase electrical body according to preferred embodiment of the present invention operating personnel；
Fig. 6 is at the schematic diagram of the middle phase tower body of tangent tower according to preferred embodiment of the present invention operating personnel；
Fig. 7 is the middle phase tower body schematic diagram close to middle phase electrical body leaving tangent tower according to preferred embodiment of the present invention operating personnel；
Fig. 8 is the middle phase tower body schematic diagram close to middle phase electrical body leaving tangent tower according to preferred embodiment of the present invention operating personnel；
Fig. 9 is the schematic diagram arriving at middle phase electrical body according to preferred embodiment of the present invention operating personnel.
Detailed description of the invention
Below with reference to accompanying drawing and describe the present invention in detail in conjunction with the embodiments.It should be noted that in the case of not conflicting,
Embodiment in the application and the feature in embodiment can be mutually combined.
Embodiments providing a kind of method entering same-tower double-circuit alternating-current transmission line tangent tower equal potential, Fig. 1 is basis
The flow chart of the entrance same-tower double-circuit alternating-current transmission line tangent tower equal potential method of the embodiment of the present invention, as it is shown in figure 1, the party
Method step includes:
Step S102: operating personnel by the tangent tower of ground connection arrive at the position parallel with the electrical body of HVAC power transmission line and/
Or the position closest with electrical body, and at least keep the first distance, wherein, the first distance for operating personnel to electrical body
Distance, tangent tower includes: lower phase cross-arm, middle phase cross-arm and upper phase cross-arm, is respectively used to hang the lower facies tract of transmission line of alternation current
Electricity body, middle phase electrical body and upper phase electrical body.
Step S104: operating personnel leaves described tangent tower, close to electrical body, and at least keep second distance, wherein second
Distance that distance is tangent tower to operating personnel and operating personnel are the second preset distance to the distance sum of electrical body.
Step S106: operating personnel arrives electrical body, and at least keeps the 3rd distance, and wherein, the 3rd distance is for operating personnel extremely
The distance of tangent tower.
As can be seen from the above description, operating personnel is in the case of tangent tower, and the distance of operating personnel to electrical body is extremely
Remain the first distance less, leave tangent tower close in the case of electrical body, operating personnel and tangent tower and operating personnel and band
The distance sum of electricity body at least keeps second distance, and in the case of arriving at electrical body, the distance of operating personnel to tangent tower is at least
Keep the 3rd distance.By said method, solve operating personnel under ac high-voltage, high altitude environment and be susceptible to wound of getting an electric shock
The problem of evil, and then ensure that the personal safety of operating personnel.
It should be noted that above-mentioned the first distance, second distance and the 3rd distance are according to maximum working voltage and maximum operation
Voltage determines, wherein, maximum working voltage and input operating range be the height above sea level in region arranged according to tangent tower and air close
Degree determines.Wherein, such as, due to High aititude and the impact of atmospheric density, make to also exist on circuit with sea level from different places
Maximum working voltage and switching overvoltage, when the voltage of HVAC power transmission line be ± 700kV time, its maximum working voltage
For 800kV, maximum switching overvoltage amplitude is 1440kV.
According to operating personnel's difference of position with tangent tower, wherein, operating personnel keeps the mode of safe distance the most different.
Such as, when operating personnel is in the case of the lower phase tower body of tangent tower, at least holding operating personnel to the distance of lower phase electrical body is
First distance；In the case of operating personnel is at the middle phase tower body or lower phase cross-arm of tangent tower, at least keep operating personnel to middle phase
The distance of electrical body is the first distance；In the case of operating personnel is at the upper phase tower body or middle phase cross-arm of tangent tower, at least keep
Operating personnel is the first distance to the distance of middle phase electrical body, and wherein, lower phase electrical body is the lower phase transmission pressure of transmission line of electricity.
Same, according to the difference of operating personnel's location, operating personnel keeps the mode of safe distance to be also different.
Leave the lower phase tower body of tangent tower during lower phase electrical body, at least keep lower phase tower body to operating personnel and operation people
Member is second distance to the distance sum of lower phase electrical body；Leaving the middle phase tower body of tangent tower or lower phase cross-arm close to middle mutually charged
During body, at least keep the distance of the middle phase tower body of the tangent tower distance to operating personnel and operating personnel to middle phase electrical body
Sum is second distance, and the lower phase cross-arm of holding to the distance of operating personnel and the distance sum of operating personnel's extremely middle phase electrical body is
Second distance；On leaving phase tower body or middle phase cross-arm near on during phase electrical body, at least keep the Shang Xiangta of tangent tower
Body is second distance to the distance sum of distance phase supreme with the operating personnel electrical body of operating personnel, and in holding, phase cross-arm is extremely made
The distance sum of the distance of industry personnel and operating personnel's supreme phase electrical body is second distance.
Different electrical bodies that are same, that arrive at according to operating personnel, operating personnel keeps safe distance mode to be also different.
In the case of arriving at lower phase electrical body, at least keep operating personnel to the distance of lower phase tower body and/or lower phase cross-arm be the 3rd away from
From；In arriving in the case of phase electrical body, at least keep operating personnel to middle phase tower body and lower phase cross-arm and middle phase cross-arm away from
From for the 3rd distance；On arriving in the case of phase electrical body, at least keep operating personnel's supreme phase tower body and middle phase cross-arm and upper
The distance of phase cross-arm is the 3rd distance.Wherein, upper phase electrical body is the upper phase transmission pressure of transmission line of electricity.
Preferably, HVAC power transmission line ± 750kV transmission line of alternation current.
Preferably, operating personnel dresses a complete set of shielding clothing.
In order to make technical scheme and implementation method clearer, below in conjunction with preferred embodiment, it is realized process
It is described in detail.
This preferred embodiment is a kind of common-tower double-return transmission line of alternation current tangent tower of newly networking in 750kV Qinghai-Tibet, 3000m area and green grass or young crops
Enter equipotential secured fashion.
When lower phase carries out livewire work: first operating personnel dresses a complete set of shielding clothing and steps on tower arrival tower body and wire water from ground
Mean place, at least keeping operating personnel during stepping on tower is the first distance with the distance of electrical body；Secondly, operating personnel is from tower body
Take insulation vehicle and enter high electric field, during entrance, at least keep grounding body to the distance of operating personnel and operating personnel
Distance sum to electrical body is second distance；When operating personnel arrives at electrical body, at least keep operating personnel to grounding body
Distance be the 3rd distance.
Middle phase/on carry out livewire work mutually time: first operating personnel dresses a complete set of shielding clothing and steps on tower from ground and arrive tower body and lead
Line horizontal level, at least keeping operating personnel during stepping on tower is the first distance with the distance of electrical body；Secondly, operating personnel from
Tower body is taken insulation vehicle and is entered high electric field, during entrance, at least keeps grounding body to the distance of operating personnel and operation
Personnel are second distance to the distance sum of electrical body；When operating personnel arrives at electrical body, at least keep operating personnel to connecing
The distance of terrain is the 3rd distance.
By the preferred embodiment of the present invention, livewire work personnel can be made to enter tangent tower in Qinghai-Tibet and blue or green new exchange networking project
There is during isoelectric level the highest safety, enable the livewire work in Qinghai-Tibet and blue or green new exchange networking project safe, square
Carrying out just, improves the safe and stable operation level of transmission line of electricity.
Wherein, learn according to a large amount of analog reslts that High aititude correction aspect is carried out:
1, when livewire work personnel are in earth potential, the distance at least keeping the electrical bodies such as operating personnel and lower phase conductor is first
During distance, its insulation withstanding voltage is more than system maximum operating voltage 800kV and system maximum switching overvoltage 1440kV；Charged
When operating personnel is in intermediate potential, at least keep operating personnel to the distance of the grounding bodies such as steel tower tower body, with operating personnel under
When the distance sum of the electrical bodies such as phase conductor is second distance, its insulation withstanding voltage more than system maximum operating voltage 800kV and
System maximum switching overvoltage 1440kV；When livewire work personnel are in lower phase conductor isoelectric level, at least keep operating personnel and ferrum
When the distance of the grounding bodies such as tower is three distance, its insulation withstanding voltage is maximum more than system maximum operating voltage 800kV and system
Switching overvoltage 1440kV.
2, when livewire work personnel are in earth potential, the distance of operating personnel and middle phase/the go up electrical bodies such as phase conductor is at least kept
When being the first distance, its insulation withstanding voltage is more than system maximum operating voltage 800kV and system maximum switching overvoltage 1440kV；
When livewire work personnel are in intermediate potential, at least keep operating personnel to the distance of the grounding bodies such as steel tower tower body, with operating personnel
When distance sum to electrical bodies such as middle phase/upper phase conductors is second distance, its insulation withstanding voltage is more than system maximum operating voltage
800kV and system maximum switching overvoltage 1440kV；When livewire work personnel are in intermediate potential, at least keep operating personnel extremely
The distance of the grounding body such as cross-arm below steel tower, is second distance with the distance sum of the electrical bodies such as operating personnel to middle phase/upper phase conductor
Time, its insulation withstanding voltage is more than system maximum operating voltage 800kV and system maximum switching overvoltage 1440kV；Livewire work
When personnel are in middle phase/upper phase conductor isoelectric level, when at least the distance of the grounding bodies such as holding operating personnel and steel tower is three distance,
Its insulation withstanding voltage is more than system maximum operating voltage 800kV and system maximum switching overvoltage 1440kV.
Illustrating the preferred embodiment of the present invention below in conjunction with the accompanying drawings, wherein, Fig. 2 is 750kV according to the preferred embodiment of the invention
Transmission line of alternation current tangent tower structural representation, as in figure 2 it is shown, this tangent tower includes: phase cross-arm 202, insulator under steel tower
204, grading ring 206, wire 208, steel tower tower body 210, phase cross-arm 212 in steel tower, phase cross-arm 214 on steel tower.
Fig. 3 is at the schematic diagram of the lower phase tower body of tangent tower according to preferred embodiment of the present invention operating personnel, as it is shown on figure 3, make
Industry personnel 32 dress on ground under tower good a complete set of shielding clothing, step on steel tower to tower body 210 and lower phase conductor horizontal level, step on tower mistake
Cheng Zhong, it is D1 that operating personnel 32 is in the distance of the electrical bodies such as earth potential, operating personnel and wire, for ensureing operating personnel 32
Injury of getting an electric shock does not occurs, and at least keeping D1 is the first distance.
Fig. 4 is the lower phase tower body schematic diagram close to lower phase electrical body leaving tangent tower according to preferred embodiment operating personnel of the present invention,
As shown in Figure 4, operating personnel 32 takes insulation vehicle 42 and horizontally enters into high electric field, and during entrance, operating personnel 32
Being in intermediate potential, the distance of the grounding bodies such as operating personnel's 32 to steel tower tower body is S1, and operating personnel 32 is to lower phase conductor 208
Being S2 Deng the distance of electrical body, should at least keep S1 Yu S2 sum is second distance.
Fig. 5 is the schematic diagram arriving at lower phase electrical body according to preferred embodiment of the present invention operating personnel, as it is shown in figure 5, operation people
After member 32 lower phase conductor 208 electrical bodies such as grade of contact, it is in isoelectric level, the ground connection such as cross-arm/tower body above operating personnel's 32 to steel tower
The distance of body is D2, and should at least keep D2 is the 3rd distance.
Fig. 6 is at the schematic diagram of the middle phase tower body of tangent tower according to preferred embodiment of the present invention operating personnel, as shown in Figure 6, makees
Industry personnel 32 step on steel tower to tower body 210 and middle phase conductor 208 horizontal level, or to lower phase cross-arm 202 and middle phase conductor 208
Near position.During stepping on tower, operating personnel 32 is in earth potential, and operating personnel 32 with the distance of wire 208 electrical body such as grade is
D3, for ensureing that operating personnel 32 does not occur injury of getting an electric shock, at least keeping D3 is the first distance.
Fig. 7 is the middle phase tower body schematic diagram close to middle phase electrical body leaving tangent tower according to preferred embodiment of the present invention operating personnel,
As it is shown in fig. 7, operating personnel 32 takes insulation vehicle 42 horizontally enters into high electric field, during entrance, operating personnel 32
Being in intermediate potential, operating personnel is S1 to the distance of the grounding bodies such as steel tower tower body, and operating personnel 32 is to middle phase conductor 208 band such as grade
The distance of electricity body is S2, and should at least keep S1 Yu S2 sum is second distance.
Fig. 8 is the middle phase tower body schematic diagram close to middle phase electrical body leaving tangent tower according to preferred embodiment of the present invention operating personnel,
As shown in Figure 8, operating personnel 32 takes insulation vehicle 42 and horizontally enters into high electric field, and during entrance, operating personnel 32
Being in intermediate potential, under operating personnel's 32 to steel tower, the distance of the grounding body such as phase cross-arm is S1, and operating personnel 32 is to middle phase conductor
Being S2 Deng the distance of electrical body, should at least keep S1 Yu S2 sum is second distance.
Fig. 9 is the schematic diagram arriving at middle phase electrical body according to preferred embodiment of the present invention operating personnel, as it is shown in figure 9, operation people
In member 32 contact after phase conductor 208 electrical body such as grade, it is in isoelectric level, operating personnel's 32 to steel tower tower body/middle side's cross-arm/lower section
The distance of the grounding bodies such as cross-arm is D4, and should at least keep D4 is the 3rd distance.
To sum up told, make livewire work personnel enter in Qinghai-Tibet and blue or green new exchange networking project by the preferred embodiment of the present invention straight
There is during transmission tower isoelectric level the highest safety.
It should be noted that operating personnel is when upper phase tower body, the distance of operating personnel to electrical body, operating personnel to tower body with
Operating personnel to the distance sum of electrical body, operating personnel's supreme phase tower body determination of distance method with operating personnel at Zhong Xiangta
Situation during body is similar to, and does not repeats them here.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for those skilled in the art
For, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of being made, etc.
With replacement, improvement etc., should be included within the scope of the present invention.
Claims (7)
1. the method entering same-tower double-circuit alternating-current transmission line tangent tower equal potential, it is characterised in that including:
Operating personnel by the tangent tower of ground connection arrive at the position parallel with the electrical body of HVAC power transmission line and/or with institute
Stating the position that electrical body is closest, and at least keep the first distance, wherein, described first distance is described operating personnel
To the distance of described electrical body, described tangent tower includes: lower phase cross-arm, middle phase cross-arm and upper phase cross-arm, is respectively used to hang
Hang the lower phase electrical body of described transmission line of alternation current, middle phase electrical body and upper phase electrical body, described operating personnel described
In the case of the lower phase tower body of tangent tower, at least it is maintained at the described operating personnel of lower phase tower body of described tangent tower to described
The distance of lower phase electrical body is described first distance；Described operating personnel in the situation of the middle phase tower body of described straight line tower body
Under, at least it is maintained at the middle phase tower body of described tangent tower or the described operating personnel of described lower phase cross-arm to described middle mutually charged
The distance of body is described first distance；Described operating personnel in the case of the upper phase tower body of described straight line tower body, at least
It is maintained at the upper phase tower body of described tangent tower or the distance of the described operating personnel extremely described upper phase electrical body of described middle phase cross-arm
For described first distance；
Described operating personnel leaves described tangent tower, close to described electrical body, and at least keeps second distance, wherein,
Described second distance be described tangent tower to the distance of described operating personnel and described operating personnel to described electrical body away from
From sum；
Described operating personnel arrives described electrical body, and at least keeps the 3rd distance, and wherein, described 3rd distance is for described
The distance of operating personnel's extremely described tangent tower.
Method the most according to claim 1, it is characterised in that described first distance, second distance and the 3rd distance are bases
Maximum working voltage and input operating range determine.
Method the most according to claim 2, it is characterised in that described maximum working voltage and input operating range are according to institute
State the height above sea level in region that tangent tower arranges and atmospheric density determines.
Method the most according to claim 1, it is characterised in that described operating personnel leaves described tangent tower, to described charged
Body is close, and at least keeps described second distance to include:
Described operating personnel from the lower phase tower body of described tangent tower in the case of described lower phase electrical body is close, at least protect
Hold the lower phase tower body of described tangent tower to the distance of described operating personnel and described operating personnel to described lower phase electrical body
Distance sum is described second distance；
Described operating personnel from the middle phase tower body of described tangent tower in the case of described middle phase electrical body is close, at least protect
Hold the middle phase tower body of described tangent tower to the distance of described operating personnel and described operating personnel to described middle phase electrical body
Distance sum is described second distance, and keeps the distance of described lower phase cross-arm extremely described operating personnel and described operation people
Member is described second distance to the distance sum of described middle phase electrical body；
In the case of to described, phase electrical body is close, at least protect from the upper phase tower body of described tangent tower described operating personnel
Hold the upper phase tower body of described tangent tower to the distance of described operating personnel and described operating personnel to described upper phase electrical body
Distance sum is described second distance, and keeps the distance of described middle phase cross-arm extremely described operating personnel and described operation people
Member is described second distance to the distance sum of described upper phase electrical body.
Method the most according to claim 1, it is characterised in that described operating personnel arrives described electrical body, and at least keeps
Described 3rd distance includes:
In the case of described operating personnel arrives described lower phase electrical body, at least keep described operating personnel to described straight line
The distance of lower phase tower body of tower, the distance of described operating personnel to described lower phase cross-arm are respectively described 3rd distance；
In the case of described operating personnel arrives described middle phase electrical body, at least keep described operating personnel to described straight line
The distance of middle phase tower body of tower, the distance of described operating personnel to described lower phase cross-arm, and described operating personnel is to described
The distance of middle phase cross-arm is respectively described 3rd distance；
Arrive on described in the case of phase electrical body described operating personnel, at least keep described operating personnel to described straight line
The distance of upper phase tower body of tower, the distance of described operating personnel to described middle phase cross-arm, and described operating personnel is to described
The distance of upper phase cross-arm is respectively described 3rd distance.
6. according to described method arbitrary in claim 1 to 5, it is characterised in that described HVAC power transmission line is ± 750kV
Transmission line of alternation current.
Method the most according to claim 6, it is characterised in that described operating personnel dresses a complete set of shielding clothing.
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| CN201310690570.3A CN103715630B (en) | 2013-12-16 | 2013-12-16 | The method entering same-tower double-circuit alternating-current transmission line tangent tower equal potential |
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| CN106786146B (en) * | 2016-12-19 | 2018-07-24 | 国网福建省电力有限公司 | Tri- identical tower window list back transmission line compact linear towers of 500kV enter equipotential operational method |
| CN110707595B (en) * | 2019-09-18 | 2020-10-27 | 国网浙江省电力有限公司金华供电公司 | Safety method for lightning arrester line to enter equipotential in live state |
| CN111934236B (en) * | 2020-07-03 | 2022-10-28 | 中国电力科学研究院有限公司 | Method for entering and exiting equipotential during live working of extra-high voltage/extra-high voltage transmission line |
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| KR20080024845A (en) * | 2006-09-15 | 2008-03-19 | 한국전기공사협회 | Approaching method to live line in transmission towers |
| NZ556735A (en) * | 2007-07-24 | 2009-03-31 | Vector Ltd | Securing devices and equipotential bonding system |
| CN101227068B (en) * | 2007-12-27 | 2010-06-02 | 国网电力科学研究院 | electric potential transferring stick for AC super or ultra high voltage line live working |
| CN101567530B (en) * | 2009-06-03 | 2011-04-06 | 国网电力科学研究院 | Safe method for entering tangent tower equal potentials for live-wire operation in 660kV direct current lines |
| CN101958519B (en) * | 2010-09-27 | 2013-07-24 | 上海久隆电力（集团）有限公司 | Method for transforming tangent tower of double-circuit double-bundle transmission lines by lifting in electrified mode in another place |
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