CN101227068B - electric potential transferring stick for AC super or ultra high voltage line live working - Google Patents

electric potential transferring stick for AC super or ultra high voltage line live working Download PDF

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Publication number
CN101227068B
CN101227068B CN2007101690428A CN200710169042A CN101227068B CN 101227068 B CN101227068 B CN 101227068B CN 2007101690428 A CN2007101690428 A CN 2007101690428A CN 200710169042 A CN200710169042 A CN 200710169042A CN 101227068 B CN101227068 B CN 101227068B
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China
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wire
lead
equipotential
high voltage
electric potential
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CN2007101690428A
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CN101227068A (en
Inventor
胡毅
王力农
刘凯
邵瑰玮
徐莹
郑传广
刘庭
胡建勋
肖宾
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State Grid Electric Power Research Institute
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State Grid Electric Power Research Institute
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Abstract

The invention is a hot-line job equipotential entering method of A.C. extra / ultrahigh voltage transmission line and the electric displacement rod. The method is characterized in that the operating staff wears extra or ultrahigh voltage A.C. hot-line job complete set barrier clothes and accesses the charged body by the insulated delivery vehicle after connecting the electric displacement rod andthe barrier clothes, when operating staff is 0.4-0.6m from the charged body, the operating staff use the special electric displacement rod to contact the charged body in order to transfer electric potential and enter the equipotential. The electric displacement rod comprises a lead-in wire 7, a connector 8, a metallic rod 9 and a crampon 10, wherein the lead-in wire 7 and the crampon 10 are connected with two ends of the metallic rod 9 separately, the connector 8 is connected with the other end of lead-in wire 7, the metallic rod 9 is circular and has smooth surface. The invention reduces impulse current substantially, which improves the safety of entering the equipotential, extends the durability of barrier clothes, and improves the working efficiency of hot-line job.

Description

Exchange super or extra high voltage line live line working electric potential transferring stick
Technical field
The invention belongs to the ultra-high-tension power transmission line field, relate to interchange ultra-high/extra-high voltage line live-line work current potential equipotential access method and electric potential transferring stick.
Background technology
Live line working has become important means and the method that power circuit detects, overhauls, transforms, for the safe and reliable operation of electric power system has been brought into play crucial effect with increasing economic efficiency.Entering equipotential is the important process step of hot line maintenance, is directly connected to operating personnel's safety and efficiency of operation.Take delivery vehicles such as hanging basket or chair lift near lead after many employing operating personnels wear a complete set of shielding clothing (comprising conductive glove) in existing 500kV of China and the following electric pressure hot line maintenance, (for 110kV, 220kV circuit, this distance is 0.3m at distance electrified body certain distance; For the 500kV circuit, this distance is for 0.4m) thus the time directly catch and touch electrified body and realize that potential transfer enters equipotential.For example relevant method introduced in " the high height above sea level 500kV hot line maintenance technical Analysis " literary composition on " Sichuan power technology " the 1st phase in 2004.
When the operating personnel enters potential transfer in the equipotential process, have a capacitor discharge pulse current, and be attended by electric arc.This pulse current increases along with the raising of electric pressure, and electric arc then strengthens along with the increase of pulse current.For 750-1000kV ultra-high/extra-high voltage alternating current circuit, employed method enters equipotential in 500kV and the following electric pressure live line working if still adopt, pulse electric current and electric arc will work the mischief to operating personnel's safety when the potential transfer process, and will damage screening clothing.
Summary of the invention
The objective of the invention is to overcome the deficiency of existing live line working equipotential access method, a kind of interchange ultra-high/extra-high voltage line live-line work equipotential access method and electric potential transferring stick thereof are provided, electric arc when eliminate exchanging potential transfer in the ultra-high/extra-high voltage line live-line work is to operating personnel's harm with to the ablation of screening clothing, improve the ultra-high/extra-high voltage alternating current circuit enter equipotential fail safe, prolong screening clothing useful life, improve the operating efficiency of live line working.
Technical scheme of the present invention is: a kind of interchange ultra-high/extra-high voltage line live-line work equipotential access method, it is characterized in that: the operating personnel dresses ultra-high/extra-high voltage and exchanges a complete set of shielding clothing of live line working, take the insulation delivery vehicle near electrified body after being connected electric potential transferring stick well with screening clothing, when distance electrified body 0.4-0.6m, use special-purpose electric potential transferring stick contact electrification body to carry out potential transfer, enter equipotential.
Exchange ultra-high/extra-high voltage line live-line work electric potential transferring stick, it is characterized in that: it comprises lead-in wire 7, connector 8, metal bar 9 and metal hook 10, lead-in wire 7 and metal hook 10 are connected to the two ends of metal bar 9, and connector 8 is connected on another termination of lead-in wire 7, metal bar 9 is circular, its smooth surface.
Good effect: adopt the present invention, pulse current when significantly reducing to exchange ultra-high/extra-high voltage live line working potential transfer (test and computational chart publicly price-reduction hang down about 30-50%), obviously weaken electric arc, and avoided harm that electric arc causes operating personnel's safety and to the ablation of screening clothing, improve greatly and enter equipotential fail safe, prolong the useful life of screening clothing, improve the live line working operating efficiency.
Description of drawings
Fig. 1 is the equipotential method schematic diagram that enters of the present invention.
Fig. 2 is the structure chart of special-purpose electric potential transferring stick of the present invention.
Concrete execution mode
The present invention will be further described in detail below in conjunction with accompanying drawing.
The explanation of mark in 1 among the figure: the 1-ground wire, 2-insulator string, 3-are cross-arms, 4-lead, 5-electric potential transferring stick, 6-hanging basket (people is sitting in wherein);
The explanation of mark in 2 among the figure: 7-lead-in wire, 8-connector, 9-metal bar, 10-metal hook.
The embodiment of the invention as shown in Figure 1.Exchange ultra-high/extra-high voltage line live-line work equipotential access method, it is characterized in that: the operating personnel dresses ultra-high/extra-high voltage and exchanges a complete set of shielding clothing of live line working, the hanging basket 6 (or the chair lift etc. that insulate) of taking insulation after being connected electric potential transferring stick well with screening clothing is near lead 4, when distance of wire 4 (electrified body) 0.5m, use special-purpose electric potential transferring stick contact wire 4 to carry out potential transfer, enter equipotential.
Distance of wire 0.5m is meant outermost (may be that knee also may be a hand) the distance of wire 0.5m of human body, human body also will be considered when contact wire can not be from body of the tower too near (being greater than 0.5m), not so be exactly electrified body having contacted lead 4 back human bodies, apart from the body of the tower danger of will discharging between person of modern times's body and body of the tower very much.
Referring to Fig. 2, the electric potential transferring stick that adopts in the above-mentioned equipotential access method, it is characterized in that: it comprises lead-in wire 7, connector 8, metal bar 9 and metal hook 10, lead-in wire 7 and metal hook 10 are connected to the two ends of metal bar 9, and connector 8 is connected on another termination of lead-in wire 7, metal bar 9 is circular, its smooth surface.
Electric potential transferring stick is connected with screening clothing well by connector 8, and the length of metal bar 9 is 0.5m (can at 0.4-0.6m), and hanging wire metal hook 10 conveniently articulates lead, realization potential transfer.

Claims (1)

1. exchange super or extra high voltage line live line working electric potential transferring stick, it is characterized in that: it comprises lead-in wire (7), connector (8), metal bar (9) and metal hook (10), lead-in wire (7) and metal hook (10) are connected to the two ends of metal bar (9), connector (8) is connected on another termination of lead-in wire (7), and metal bar (9) is circular, its smooth surface.
CN2007101690428A 2007-12-27 2007-12-27 electric potential transferring stick for AC super or ultra high voltage line live working Active CN101227068B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2007101690428A CN101227068B (en) 2007-12-27 2007-12-27 electric potential transferring stick for AC super or ultra high voltage line live working

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2007101690428A CN101227068B (en) 2007-12-27 2007-12-27 electric potential transferring stick for AC super or ultra high voltage line live working

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CN101227068A CN101227068A (en) 2008-07-23
CN101227068B true CN101227068B (en) 2010-06-02

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Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN102412520A (en) * 2010-09-25 2012-04-11 河南省电力公司焦作供电公司 Live-wire operation potential shifting shunting bar for alternating-current ultra or extra high-voltage line
CN102904192B (en) * 2012-10-12 2015-05-13 江苏省电力公司南京供电公司 Heat shield and method for carrying out live working on heat-resistant wires by using same
CN103545748B (en) * 2013-09-26 2016-04-27 国家电网公司 Go out electric field fast arc extinction device
CN103618251A (en) * 2013-11-27 2014-03-05 国家电网公司 Technology for electrified overhaul of +-800kV ultrahigh voltage direct-current transmission line
CN103715630B (en) * 2013-12-16 2016-08-17 国家电网公司 The method entering same-tower double-circuit alternating-current transmission line tangent tower equal potential
CN103715629A (en) * 2013-12-16 2014-04-09 国家电网公司 Method for entering high-voltage direct-current transmission line tangent tower equal potential
CN103683105A (en) * 2013-12-17 2014-03-26 国家电网公司 Live working method of phase conductor insulating arm aerial platform truck under 66kV electric transmission line
CN103901303A (en) * 2014-03-27 2014-07-02 国家电网公司 Testing device and method for current measuring in potential shifting process of helicopter extra-high-voltage hot-line work
CN104659710B (en) * 2015-02-06 2017-09-15 江苏省电力公司检修分公司 A kind of 500kV power transmission lines roadside phase conductor aerial lift device with insulated arm livewire work method
CN108649481A (en) * 2018-04-25 2018-10-12 中国电力科学研究院有限公司 Transmission line of alternation current livewire work personnel's equipotential safe transfer method
CN112158781B (en) * 2020-09-16 2022-04-01 国家电网有限公司 Live working device based on motorized traction device and using method

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CN2441248Y (en) * 2000-08-08 2001-08-01 崔驭强 Live line tools for bar-like electric device
CN1140948C (en) * 2002-01-18 2004-03-03 国家电力公司武汉高压研究所 Portable gap protector for hot-line work
CN201153196Y (en) * 2007-12-27 2008-11-19 国网武汉高压研究院 Electric potential transferring stick of alternating current ultra / super high-tension line live-line work

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Publication number Priority date Publication date Assignee Title
CN2441248Y (en) * 2000-08-08 2001-08-01 崔驭强 Live line tools for bar-like electric device
CN1140948C (en) * 2002-01-18 2004-03-03 国家电力公司武汉高压研究所 Portable gap protector for hot-line work
CN201153196Y (en) * 2007-12-27 2008-11-19 国网武汉高压研究院 Electric potential transferring stick of alternating current ultra / super high-tension line live-line work

Non-Patent Citations (2)

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Title
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胡毅,王力农等.1000kV级交流输电线路带电作业的试验研究.电网技术31 6.2007,31(6),11-12. *

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