CN102842867A - Method for electrically disconnecting or connecting disconnector with drainage wire between buses - Google Patents
Method for electrically disconnecting or connecting disconnector with drainage wire between buses Download PDFInfo
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- CN102842867A CN102842867A CN2012103185180A CN201210318518A CN102842867A CN 102842867 A CN102842867 A CN 102842867A CN 2012103185180 A CN2012103185180 A CN 2012103185180A CN 201210318518 A CN201210318518 A CN 201210318518A CN 102842867 A CN102842867 A CN 102842867A
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Abstract
The invention relates to the electrification maintenance field of a 66kV disconnector, in particular to a method for electrically disconnecting or connecting a disconnector with a drainage wire between buses. The method is characterized in that an equipotential electrician is lifted to a flexible busbar along an insulated hanging ladder, potentials are transmitted in the equipotential method, and people on the floor can realize disconnection and connection of the drainage wire by virtue of arc extinction pulleys and haulage ropes of the drainage wire. The method specifically comprises an electrically disconnection step and an electrically connection step. Compared with the prior art, the method provided by the invention has the beneficial effects that the equipotential electrician adopts the equipotential operating method, and the disconnection and the connection of the drainage wire with electricity can be realized on an aerial flexible bus bar, so that defects or hidden dangers can be eliminated, operating times of power outage and switching of operators can be reduced, reliability of power distribution of a power grid can be ensured, and a safe operation of electrical equipment can be guaranteed.
Description
Technical field
The present invention relates to 66kV isolating switch power-on serving field, relate in particular to the method for a kind of charged breaking and connecting isolating switch to drainage thread between bus.
Background technology
Live line working means a kind of special operation mode of on the electric equipment of operation, overhauling and transform; Be to guarantee power grid security, economy, reliability service and to a kind of effective technological means of user's uninterrupted power supply; Simultaneously can reduce operations staff's workload, avoid the accident of misoperation to take place.
Transformer station adopts double bus scheme usually; During maintenance 66kV isolating switch, the substation operation personnel can only take down the mode of bus, with electric load be switched on another bus or with bypass for giving; Owing to need do tens to up to a hundred operations; Program is complicated, occurs misoperation fault easily, increases operations staff's security risk probability.
Adopt charged breaking and connecting isolating switch to drainage thread mode between bus, can reduce operations staff's grid switching operation, reduce the security risk probability.Owing to shortened equipment running time in spite of illness, reduce even avoided accident interruption, improve the stability of a system, in addition, create the loop clearance space of a safety inspection, maintenance to the maintainer.
Summary of the invention
The method that the purpose of this invention is to provide a kind of charged breaking and connecting isolating switch to drainage thread between bus; Overcome the deficiency of prior art; Charged dismounting drainage thread on aerial soft bus is eliminated defective or hidden danger, reduces to have a power failure and operations staff's grid switching operation number of times; Guarantee the mains supply reliability, ensure the electric equipment safe operation.
For solving the problems of the technologies described above, the technical scheme of the utility model is:
The method of charged breaking and connecting isolating switch to drainage thread between bus; Equipotential electrician rises under the soft bus along insulated hook ladder; Adopt idiostatic method to shift current potential; The ground staff by extinguishing arc coaster and drainage thread pull rope realize drainage thread disconnected draw and connect draw, specifically comprise and chargedly disconnectedly draw step and charged connecing drawn step, wherein:
One) the charged disconnected step of drawing is following:
1) the assembling insulated hook ladder on ground; Equipotential electrician puts on screening clothing; With insulation resistance meter the insulating tool segmentation is detected; Resistance should be not less than 700 megaohms, and the specific responsibility guardian checks that whether screening clothing outward appearance, each one connect good, measures the screening clothing D.C. resistance with insulation resistance meter and should be not more than 20 ohm;
2) insulated hook ladder is hung on the bus of setting, the insulated hook ladder height should be less than the height of bus apart from ground, and moving process will prevent to swing excessive, injures surrounding devices by a crashing object, causes short trouble;
3) during charged disconnected drawing, from away from isolating switch one mutually successively to nearer two-phase in addition, by the length of drainage thread, in, short order carries out;
4) the equipotential electrician takes the extinguishing arc coaster and the drainage thread pull rope is climbed up insulated hook ladder, and the ground electrician controls the insulated hook ladder afterbody, prevents the hanging ladder swing; Equipotential electrician climbs to setting; Shift current potential with hand and get into highfield, fasten the equipotential safety belt, guarantee that facial exposed part and electrified body are not less than 0.2m when shifting current potential; At the A of bus phase, C the phase spacing that insulation control rope increases bus is installed respectively mutually, is guaranteed that phase spacing is not less than 0.9m;
5) the equipotential electrician installs the extinguishing arc coaster on bus, and drainage thread pull rope one end passes the extinguishing arc coaster and ties up to the drainage thread wire clamp place that need disconnected draw, and the drainage thread pull rope other end is strained by the ground electrician;
6) during charged disconnected drawing, the ground electrician strains the drainage thread pull rope, and equipotential electrician removes the screw that is connected between drainage thread and bus, when the ground electrician unclasps drainage thread, cooperates with insulating support rod, is put on the ground until drainage thread; Unclasp to observe at any time in the lead process with pilot over the ground or to the combinational gap of adjacent electrified body, drainage thread breaks away from bus moment, equipotential electrician will face to opposite side;
7) the equipotential electrician removes safety belt, takes the extinguishing arc coaster and withdraws from highfield with hand transfer current potential, notices guaranteeing that facial exposed part and electrified body are not less than 0.2m;
Two) chargedly connect that to draw step following:
1) the assembling insulated hook ladder on ground; Equipotential electrician puts on screening clothing; With insulation resistance meter the insulating tool segmentation is detected; Resistance should be not less than 700 megaohms, and the specific responsibility guardian checks whether screening clothing outward appearance, each one connect good, measures the screening clothing D.C. resistance with insulation resistance meter and should be not more than 20 Europe mother;
2) insulated hook ladder is hung on the bus of setting, the hanging ladder height should be less than the height of bus apart from ground, and moving process will prevent to swing excessive, injures surrounding devices by a crashing object, causes short trouble;
3) charged connecing when drawing, from from isolating switch nearest one mutually successively to two-phase in addition far away, by the length of drainage thread, in, short order carries out;
4) the equipotential electrician takes the extinguishing arc coaster and the drainage thread pull rope is pedaled insulated hook ladder, and the ground electrician controls the insulated hook ladder afterbody, prevents the hanging ladder swing; Equipotential electrician climbs to setting; Shift current potential with hand and get into highfield, fasten the equipotential safety belt, guarantee that facial exposed part and electrified body are not less than 0.2m when shifting current potential; At the A of bus phase, C the phase spacing that insulation control rope increases bus is installed respectively mutually, is guaranteed that phase spacing is not less than 0.9m;
5) the equipotential electrician installs the extinguishing arc coaster on bus, and drainage thread pull rope one end passes the extinguishing arc coaster and ties up to and need meet the drainage thread wire clamp place of drawing, and the drainage thread pull rope other end is strained by the ground electrician;
6) the ground electrician drainage thread wire clamp contact-making surface of polishing, and smear neutral vaseline; Equipotential electrician's bus bar side contact-making surface of polishing exposes metallic luster, smears neutral vaseline;
7) charged connecing when drawing; The ground electrician cooperates with insulating support rod and is promoted to drainage thread and the bus junction; Contact moment equipotential electrician will face to opposite side, in the drainage thread lifting process, observe at any time with pilot over the ground or to the combinational gap of adjacent electrified body; After drainage thread was in place, equipotential electrician installed the screw that is connected between drainage thread and bus;
8) the equipotential electrician removes safety belt, takes the extinguishing arc coaster and withdraws from highfield with hand transfer current potential, notices guaranteeing that facial exposed part and electrified body are not less than 0.2m.
Compared with prior art; The invention has the beneficial effects as follows: equipotential electrician adopts the equal potential working method, and by insulated hook ladder and ground electrician's compounding practice, charged realization drainage thread disconnected drawn and connect and draw on aerial soft bus; Eliminate defective or hidden danger; Reduce and have a power failure and operations staff's grid switching operation number of times assurance mains supply reliability, the safe operation of guarantee electric equipment.
Description of drawings
Fig. 1 is the disconnected work operations status architecture sketch map that draws of the present invention;
Fig. 2 is that the present invention connects and draws work operations status architecture sketch map.
Among the figure: 1-equipotential electrician 2-extinguishing arc coaster 3-drainage thread pull rope 4-bus 5-drainage thread 6-hanging ladder control rope 7-ground electrician 8-insulating support rod 9-isolating switch 10-specific responsibility guardian 11-insulated hook ladder 12-work director
Embodiment
Be described further below in conjunction with the accompanying drawing specific embodiments of the invention:
The method of the charged breaking and connecting isolating switch of the present invention to drainage thread between bus; Be to rise to bus 4 times along insulated hook ladder 11 by equipotential electrician 1; Adopt the idiostatic method operation; Ground staff 7 by extinguishing arc coaster 2, drainage thread pull rope 3 and insulating support rod 8 realize drainage threads 5 disconnected draw and connect draw, specifically comprise and chargedly disconnectedly draw step and charged connecing drawn step, wherein:
One) see Fig. 1, the charged disconnected step of drawing is following:
1) equipotential electrician 1 puts on screening clothing; Assembling insulated hook ladder 11 detects the insulating tool segmentation with insulation resistance meter on ground, and resistance should be not less than 700 megaohms; Whether specific responsibility guardian 10 inspection screening clothing outward appearances, each one connect good; Measure the screening clothing D.C. resistance with insulation resistance meter and be not more than 20 ohm, otherwise, change;
2) insulated hook ladder 11 is hung on the bus 4 of setting, the ground electrician holds hanging ladder control rope 6, and the hanging ladder height should be less than the height of bus apart from ground; The hanging ladder afterbody must not touch ground; The moving process personnel want energy to concentrate, and accept work director 12 unified commands, prevent to swing excessive; Injure surrounding devices by a crashing object, cause short trouble;
3) during charged disconnected drawing, from away from isolating switch 9 one mutually successively to nearer two-phase in addition, by the length of drainage thread, in, short order carries out;
4) equipotential electrician 1 takes extinguishing arc coaster 2 and climbs up hanging ladder 11 with drainage thread pull rope 3, and the ground electrician controls the hanging ladder afterbody, prevents the hanging ladder swing; Equipotential electrician climbs hanging ladder to setting, shifts current potential with hand and gets into highfield, and the equipotential safety belt is hung on the bus; As having satisfied not " State Grid Corporation of China's electric power safety working regulation (power transformation part) " when phase spacing regulation 66kV is not less than 0.9m; In the time of can adopting the equipotential electrician along hanging ladder passage forward and back highfield should according to " health pastes, and back line is hung, vertical on; vertically down; outreach tiltedly once " method, be not less than 0.9m in the phase spacing gap that A, the C of bus install insulation control rope increase bus mutually respectively simultaneously, guarantee that facial exposed part and electrified body are not less than 0.2m;
5) equipotential electrician 1 installs extinguishing arc coaster 2 on bus 4 appropriate locations, and drainage thread pull rope 3 one ends pass extinguishing arc coaster 2 and tie up to the drainage thread 5 wire clamp places that need disconnected draw, and drainage thread pull rope 3 other ends are by ground electrician 7 tensions;
6) charged breaking when drawing, the ground electrician strains drainage thread pull rope 3, the yoke plate connecting bolt that equipotential electrician's 1 dismounting drainage thread 5 and bus are 4, drainage thread breaks off moment equipotential electrician will face to opposite side; A ground electrician 7 utilizes drainage thread pull rope 3 and another ground electrician to hold insulating support rod 8 and cooperatively interacts, be put on the ground until drainage thread; Unclasp to observe at any time in the lead process with pilot over the ground or to the combinational gap of adjacent electrified body;
7) the equipotential electrician removes safety belt, takes the extinguishing arc coaster and withdraws from highfield with hand transfer current potential, notices guaranteeing that facial exposed part and electrified body are not less than 0.2m.
Two) see Fig. 2, chargedly connect that to draw step following:
1) charged connecing when drawing, inspection isolating switch are assembled insulated hook ladder on ground after opening position, no ground connection; With insulation resistance meter the insulating tool segmentation is detected, resistance should be not less than 700 megaohms, and equipotential electrician puts on screening clothing; The specific responsibility guardian checks whether good screening clothing outward appearance, each one connect; Measure the screening clothing D.C. resistance with insulation resistance meter and should be not more than 20 ohm, otherwise, change;
2) insulated hook ladder is hung on the bus of setting, the hanging ladder height should be less than the height of bus apart from ground, and the hanging ladder afterbody must not touch ground; The moving process personnel want energy to concentrate, and 12 people unified command is responsible in the work of accepting, and prevents to swing excessive; Injure surrounding devices by a crashing object, cause short trouble;
3) charged connecing when drawing, from from isolating switch nearest one mutually successively to two-phase in addition far away, by the weak point of drainage thread, in, Changshun preface carries out;
4) the equipotential electrician takes the extinguishing arc coaster and the drainage thread pull rope is climbed up hanging ladder, and the ground electrician controls the hanging ladder afterbody, prevents the hanging ladder swing; Equipotential electrician climbs hanging ladder to setting, shifts current potential with hand and gets into highfield, and the equipotential safety belt is hung on the bus; As having satisfied not " State Grid Corporation of China's electric power safety working regulation (power transformation part) " when phase spacing regulation 66kV is not less than 0.9m; In the time of can adopting the equipotential electrician along hanging ladder passage forward and back highfield should according to " health pastes, and back line is hung, vertical on; vertically down; outreach tiltedly once " method, be not less than 0.9m in the phase spacing gap that A, the C of bus install insulation control rope increase bus mutually respectively simultaneously, guarantee that facial exposed part and electrified body are not less than 0.2m;
5) the equipotential electrician installs the extinguishing arc coaster on the bus appropriate location, and drainage thread pull rope one end passes the extinguishing arc coaster and ties up to and need meet the drainage thread wire clamp place of drawing, and the drainage thread pull rope other end is strained by the ground electrician;
6) the ground electrician handles drainage thread wire clamp contact-making surface and is coated with neutral vaseline, and equipotential electrician handles clean bus bar side contact-making surface, exposes metallic luster, evenly smears neutral vaseline;
7) charged connecing when drawing; A ground electrician 7 utilizes drainage thread pull rope 3 and another ground electrician to hold insulating support rod 8 and cooperatively interacts; Drainage thread is promoted to and the bus junction; Contact moment equipotential electrician will face to opposite side, promote to observe at any time in the lead process with pilot over the ground or to the combinational gap of adjacent electrified body; Connecting bolt between fastening drainage thread wire clamp of equipotential electrician and bus;
8) the equipotential electrician removes safety belt, takes the extinguishing arc coaster and withdraws from highfield, shifts current potential with hand when withdrawing from highfield, and guarantees that facial exposed part and electrified body are not less than 0.2m.
Claims (1)
1. the method for charged breaking and connecting isolating switch to drainage thread between bus; It is characterized in that; Equipotential electrician rises under the soft bus along insulated hook ladder, adopts idiostatic method to shift current potential, and the ground staff draws and connects by extinguishing arc coaster and drainage thread pull rope realization drainage thread disconnected and draws; Specifically comprise and chargedly disconnected draw step and charged connecing drawn step, wherein:
One) the charged disconnected step of drawing is following:
1) the assembling insulated hook ladder on ground; Equipotential electrician puts on screening clothing; With insulation resistance meter the insulating tool segmentation is detected; Resistance should be not less than 700 megaohms, and the specific responsibility guardian checks that whether screening clothing outward appearance, each one connect good, measures the screening clothing D.C. resistance with insulation resistance meter and should be not more than 20 ohm;
2) insulated hook ladder is hung on the bus of setting, the insulated hook ladder height should be less than the height of bus apart from ground, and moving process will prevent to swing excessive, injures surrounding devices by a crashing object, causes short trouble;
3) during charged disconnected drawing, from away from isolating switch one mutually successively to nearer two-phase in addition, by the length of drainage thread, in, short order carries out;
4) the equipotential electrician takes the extinguishing arc coaster and the drainage thread pull rope is climbed up insulated hook ladder, and the ground electrician controls the insulated hook ladder afterbody, prevents the hanging ladder swing; Equipotential electrician climbs to setting; Shift current potential with hand and get into highfield, fasten the equipotential safety belt, guarantee that facial exposed part and electrified body are not less than 0.2m when shifting current potential; At the A of bus phase, C the phase spacing that insulation control rope increases bus is installed respectively mutually, is guaranteed that phase spacing is not less than 0.9m;
5) the equipotential electrician installs the extinguishing arc coaster on bus, and drainage thread pull rope one end passes the extinguishing arc coaster and ties up to the drainage thread wire clamp place that need disconnected draw, and the drainage thread pull rope other end is strained by the ground electrician;
6) during charged disconnected drawing, the ground electrician strains the drainage thread pull rope, and equipotential electrician removes the screw that is connected between drainage thread and bus, when the ground electrician unclasps drainage thread, cooperates with insulating support rod, is put on the ground until drainage thread; Unclasp to observe at any time in the lead process with pilot over the ground or to the combinational gap of adjacent electrified body, drainage thread breaks away from bus moment, equipotential electrician will face to opposite side;
7) the equipotential electrician removes safety belt, takes the extinguishing arc coaster and withdraws from highfield with hand transfer current potential, notices guaranteeing that facial exposed part and electrified body are not less than 0.2m;
Two) chargedly connect that to draw step following:
1) the assembling insulated hook ladder on ground; Equipotential electrician puts on screening clothing; With insulation resistance meter the insulating tool segmentation is detected; Resistance should be not less than 700 megaohms, and the specific responsibility guardian checks whether screening clothing outward appearance, each one connect good, measures the screening clothing D.C. resistance with insulation resistance meter and should be not more than 20 Europe mother;
2) insulated hook ladder is hung on the bus of setting, the hanging ladder height should be less than the height of bus apart from ground, and moving process will prevent to swing excessive, injures surrounding devices by a crashing object, causes short trouble;
3) charged connecing when drawing, from from isolating switch nearest one mutually successively to two-phase in addition far away, by the length of drainage thread, in, short order carries out;
4) the equipotential electrician takes the extinguishing arc coaster and the drainage thread pull rope is pedaled insulated hook ladder, and the ground electrician controls the insulated hook ladder afterbody, prevents the hanging ladder swing; Equipotential electrician climbs to setting; Shift current potential with hand and get into highfield, fasten the equipotential safety belt, guarantee that facial exposed part and electrified body are not less than 0.2m when shifting current potential; At the A of bus phase, C the phase spacing that insulation control rope increases bus is installed respectively mutually, is guaranteed that phase spacing is not less than 0.9m;
5) the equipotential electrician installs the extinguishing arc coaster on bus, and drainage thread pull rope one end passes the extinguishing arc coaster and ties up to and need meet the drainage thread wire clamp place of drawing, and the drainage thread pull rope other end is strained by the ground electrician;
6) the ground electrician drainage thread wire clamp contact-making surface of polishing, and smear neutral vaseline; Equipotential electrician's bus bar side contact-making surface of polishing exposes metallic luster, smears neutral vaseline;
7) charged connecing when drawing; The ground electrician cooperates with insulating support rod and is promoted to drainage thread and the bus junction; Contact moment equipotential electrician will face to opposite side, in the drainage thread lifting process, observe at any time with pilot over the ground or to the combinational gap of adjacent electrified body; After drainage thread was in place, equipotential electrician installed the screw that is connected between drainage thread and bus;
8) the equipotential electrician removes safety belt, takes the extinguishing arc coaster and withdraws from highfield with hand transfer current potential, notices guaranteeing that facial exposed part and electrified body are not less than 0.2m.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012103185180A CN102842867A (en) | 2012-08-31 | 2012-08-31 | Method for electrically disconnecting or connecting disconnector with drainage wire between buses |
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| CN2012103185180A CN102842867A (en) | 2012-08-31 | 2012-08-31 | Method for electrically disconnecting or connecting disconnector with drainage wire between buses |
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Cited By (10)
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| CN103500966A (en) * | 2013-06-20 | 2014-01-08 | 国家电网公司 | Electrified power disconnecting method for leading wire from 66kv disconnecting switch to pipe busbar |
| CN103618249A (en) * | 2013-11-27 | 2014-03-05 | 国家电网公司 | technology for electrified overhaul of +-500kV double-circuit direct-current power transmission lines on same tower |
| CN105207123A (en) * | 2015-10-13 | 2015-12-30 | 国网辽宁省电力有限公司丹东供电公司 | Equipotential operation method of tubular bus |
| CN106887808A (en) * | 2017-04-10 | 2017-06-23 | 国网辽宁省电力有限公司辽阳供电公司 | A kind of insulation docking machine for the powered drainage in both sides of furthering |
| CN109212361A (en) * | 2018-10-24 | 2019-01-15 | 云南电网有限责任公司电力科学研究院 | A kind of power transmission line phase fault test method and system |
| CN109921335A (en) * | 2019-03-25 | 2019-06-21 | 云南电网有限责任公司昆明供电局 | Pylon route uses extinguishing arc rope ground potential breaking and connecting drainage thread working system |
| CN110120643A (en) * | 2019-04-19 | 2019-08-13 | 国网浙江淳安县供电有限公司 | A kind of ground potential distribution power circuit uninterrupted operation method |
| CN113612160A (en) * | 2021-09-10 | 2021-11-05 | 亿嘉和科技股份有限公司 | Winch working tool for bypass cable lap joint and operation method thereof |
| CN113964718A (en) * | 2021-11-22 | 2022-01-21 | 国网辽宁省电力有限公司鞍山供电公司 | Method for processing heating fault of conducting wire in electrified mode |
| CN114825167A (en) * | 2022-04-22 | 2022-07-29 | 贵州西电电力股份有限公司黔北发电厂 | Optimization method for diversion wire reconnection |
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| CN103500966A (en) * | 2013-06-20 | 2014-01-08 | 国家电网公司 | Electrified power disconnecting method for leading wire from 66kv disconnecting switch to pipe busbar |
| CN103500966B (en) * | 2013-06-20 | 2016-08-17 | 国家电网公司 | 66kv disconnecting switch is to pipe bus charged disconnecting lead-in wire method |
| CN103618249A (en) * | 2013-11-27 | 2014-03-05 | 国家电网公司 | technology for electrified overhaul of +-500kV double-circuit direct-current power transmission lines on same tower |
| WO2015078195A1 (en) * | 2013-11-27 | 2015-06-04 | 国家电网公司 | Live overhaul process for ± 500 kv double-loop dc power transmission line on same tower |
| CN103618249B (en) * | 2013-11-27 | 2017-03-15 | 国家电网公司 | ± 500kV common-tower double-return DC power transmission line hotline maintenance techniques |
| CN105207123A (en) * | 2015-10-13 | 2015-12-30 | 国网辽宁省电力有限公司丹东供电公司 | Equipotential operation method of tubular bus |
| CN106887808A (en) * | 2017-04-10 | 2017-06-23 | 国网辽宁省电力有限公司辽阳供电公司 | A kind of insulation docking machine for the powered drainage in both sides of furthering |
| CN109212361A (en) * | 2018-10-24 | 2019-01-15 | 云南电网有限责任公司电力科学研究院 | A kind of power transmission line phase fault test method and system |
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| CN110120643B (en) * | 2019-04-19 | 2020-10-27 | 国网浙江淳安县供电有限公司 | Uninterrupted power operation method for power line of ground potential distribution network |
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Application publication date: 20121226 |