CN102664358B - Live replacement method for static contact of 220 kV flexible busbar - Google Patents

Live replacement method for static contact of 220 kV flexible busbar Download PDF

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Publication number
CN102664358B
CN102664358B CN201210120939.2A CN201210120939A CN102664358B CN 102664358 B CN102664358 B CN 102664358B CN 201210120939 A CN201210120939 A CN 201210120939A CN 102664358 B CN102664358 B CN 102664358B
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CN
China
Prior art keywords
ladder
insulation
soft bus
ground
rope
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CN201210120939.2A
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Chinese (zh)
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CN102664358A (en
Inventor
丁涛
何忠伟
王枫
刘伟
刘旭东
赵岩
胡绍刚
刘诚
刘涛
刘君
战宝华
张德伟
甘海涛
姜兴业
李光
王宏
李兴生
魏庆峰
陈昱达
薛涵今
余飞
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辽宁省电力有限公司鞍山供电公司
国家电网公司
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Priority to CN201210120939.2A priority Critical patent/CN102664358B/en
Publication of CN102664358A publication Critical patent/CN102664358A/en
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Publication of CN102664358B publication Critical patent/CN102664358B/en

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Abstract

The invention relates to the field of GW6 series alternating high-voltage isolating switches of a flexible busbar in a power grid 220 kV substation and particularly relates to a live replacement method for a static contact of the 220 kV flexible busbar. The live replacement method for the static contact of the 220 kV flexible busbar is characterized in that operation persons ascend to the position below the flexible busbar along an insulation herringbone ladder and subject the static contact of the flexible busbar to live replacement by means of using an idiostatic method to transfer potentials, and the live replacement method includes a detachment step and an installation step. Compared with replacement methods in prior art, the live replacement method for the static contact of the 220 kV flexible busbar has the advantages that the insulation herringbone ladder is used as an insulation manned platform and meets the requirement of an equipotential operation method, and the insulation herringbone ladder is small in size, can be lifted below the flexible busbar, and is applicable to live replacement operation for static contacts of GW6 series sing-column and double-column vertical opening type isolating switches of the 220 kV flexible busbar; the live replacement method is capable of promoting scientific and technological progress and has obvious social benefits and economical benefits; and the live replacement method fills the gap in the live replacement projects of the static contacts of the isolating switches and has a broad application prospect and a popularization value in national grid systems.

Description

The method of the soft bus static contact of charged for replacement 220kV
Technical field
The present invention relates to soft bus GW6 series alternating-current high-voltage isolation switch field in electrical network 220kV transformer station, the particularly method of the soft bus static contact of a kind of charged for replacement 220kV.
Background technology
GW6 series single-column, twin columns vertical opening type isolating switch are generally arranged under the aerial soft bus of 220kV transformer station, there are maintenance and staged isolation, changing-over circuit, point switch unloaded line, the purposes such as isolation fast automatically as required, there is electrical isolation fracture, deciliter state is clear, is conducive to the advantage of making an inspection tour, except saving floor space, also can reduce to draw and connect wire, reduce power station investment, therefore, more common in 220kV transformer station at home.
There are double-bus and two kinds of modes of connection of single busbar connection in the transformer station of normal operation, and due to mode of connection difference, in the time of the fixed contact generation defect on moving contact or the soft bus of isolating switch or hidden danger, the method for processing is different.
When double bus scheme, substation operation personnel can only take down the mode of bus, electric load is switched on another bus or send with bypass replacement, because needs do tens to up to a hundred operations,, easily there is misoperation fault in program complexity, increases operations staff's security risk probability.
And when single bus scheme mode, substation operation personnel can only take to send with bypass replacement.Because the switch movable contact at this interval, loop only has 2.56 meters apart from soft bus static contact clearance, the soft bus safe distance of crane distance is lower than electric power safety norm standard, crane cannot lift operation, maintainer cannot upkeep operation, the 220kV of this transformer station single busbar connection can only all have a power failure, could overhaul or change, affect system safety power supply reliability.
Summary of the invention
The object of this invention is to provide the method for the soft bus static contact of a kind of charged for replacement 220kV, overcome the deficiencies in the prior art, use special insulation double ladder, adopt idiostatic method and ground electrician's compounding practice, on aerial soft bus, charged dismounting and installation fixed contact, eliminate defect or hidden danger, reduces and have a power failure and operations staff's grid switching operation number of times, ensure mains supply reliability, ensure electric equipment safe operation.
For solving the problems of the technologies described above, technical scheme of the present invention is:
The method of the soft bus static contact of charged for replacement 220kV, is characterized in that, operating personnel rises under soft bus along insulation double ladder, adopts idiostatic method to shift current potential, and the soft bus static contact of charged for replacement, comprises demounting procedure and installation steps, and concrete operation step is as follows:
One, demounting procedure:
1) insulation double ladder is prepared before promoting: first at an enclosed type coaster of insulation double ladder top hanging, wear a bar insulation protection rope on enclosed type coaster; At a ladder two ends, two of insulation tricing lines are respectively set respectively; Between the ladder body of both sides, from top to bottom arrange and open apart from three of tricing lines, reserved appropriate length, opening apart from one end and the side ladder body of tricing line is slip-knot, opens apart from the other end and the opposite side ladder body of tricing line and fastens; Ladders body in both sides arranges respectively collapse each two of the insulation pull rope of waist of anti-terraced body; On the foot of ladder of a side ladder body, foot of ladder fixture is set, foot of ladder fixture is followed closely in underground;
2) insulation double ladder promote: work director commander and specialize under tutorial monitoring, divide two groups by terraced body one side ground electrician, every group of each traction one thoroughly does away with edge pull rope, and ground electrician's tractive insulation protection rope of terraced body opposite side prevents from promoting excessive generation and falls terraced; Two ground electricians are with riding foot of ladder fixture, and both hands cooperation lifting, stand on ground until insulation double ladder is herringbone;
3) double ladder that will insulate is in place: hold respectively four ground electricians under the condition of insulation tricing line, take off foot of ladder fixture; Ground electrician divides two groups insulation double ladder stationary transfers to first setting (with a shelves operating loop side), and ladder exceeds 1.6-0.8m than soft bus, and soft bus is apart from terraced body 100-150mm;
4) fixed insulation double ladder: the insulation tricing line at a ladder two ends is strained and fixed along the both sides extended line direction of ladder head respectively, and wherein a side is at least used wire grip in an eradication edge tricing line, makes rope tensile force be no less than 1KN;
By the insulation pull rope tension of terraced body both sides, tie up to respectively on earth anchor and fix, make both sides ladder body projection slightly laterally;
5) before ascending stair, prepare: equipotential electrician wears a complete set of qualified screening clothing, wears goggles, check that by specific responsibility guardian whether screening clothing outward appearance is good, whether each several part connection is reliable, whether protection sling is correct, qualified rear permission ascending stair;
6) ascending stair operation: two ground electricians respectively hold up a side ladder body, another two ground electrician's tractive insulation protection ropes, equipotential electrician is along a side ladder body ascending stair, in climbing, ensure that combinational gap is greater than 2.1m, phase spacing is greater than 2.5m, in way, successively three are opened apart from tricing line and fastened, until job position, fasten seat belts, shift current potential, enter highfield, human body exposed part should keep the safe distance of 0.3m, equipotential electrician hangs over shielding equalizer between soft bus and screening clothing, guarantee in the situation that both hands leave electrified body, also remain equipotential,
7) fixing soft bus: equipotential electrician installs two groups of wire fixed arms with it at a side ladder, and soft bus is held up by wire fixed arm, is banded in soft bus on wire fixed arm with copper cash, prevents soft bus swing;
8) remove fixed contact: extinguishing arc coaster is hung on soft bus, and one, extinguishing arc rope in the first side T-shape cable clamp of stationary contact bottom, has fixed contact to be no less than the room for promotion of 100mm through the pulley colligation of extinguishing arc coaster, and extinguishing arc rope tail of rope is controlled by a ground electrician; On the step a little more than soft bus, be a locking coaster with electrodeless rope sling, one of insulating cord passes the pulley of locking coaster and ties up in fixed contact opposite side T-shape cable clamp bottom, and insulating cord tail of rope is controlled by a ground electrician; On fixed contact, one of colligation falls to controlling insulating cord, falls to controlling insulating cord tail of rope and is controlled by another ground electrician;
Equipotential electrician first unloads the bolt of T-shaped wire clamp one side of fixed contact, then unloads the bolt of opposite side, in operating process, controls two ground electricians of extinguishing arc rope and insulating cord tail of rope, coordinates tension tail of rope;
9) fall fixed contact: under work director's commander, two ground electricians control respectively extinguishing arc rope and insulating cord starts slack rope, another ground electrician controls and falls to controlling insulating cord angle, makes fixed contact depart from soft bus and slowly drops on ground;
10) EO exits: equipotential electrician removes the aluminium infantees being wrapped on soft bus, the copper cash of the fixing soft bus on wire fixed arm is opened, allow through work director, equipotential electrician removes shielding equalizer, shift current potential, exit equipotential state, human body exposed part keeps the safe distance of 0.3m, open safety belt, return to ground along ladder;
11) shift insulation double ladder: the rope of opening all fixed ladder bodies, make whole ladder outside soft bus beyond side shifting 1m after, control rope with it of the ladder slow tilt drop of double ladder that makes to insulate, in the time that ladder head is above lower than soft bus 0.5m, two groups of ground electricians move to next setting, repeating step 1 by insulation double ladder from soft bus below) to step 10) charged dismounting fixed contact;
12) step 1 in repeated removal step) to step 11), until the whole dismountings of the soft bus upper static contact of three-phase are complete;
Two, installation steps:
1) insulation double ladder is prepared before promoting: first at an enclosed type coaster of insulation double ladder top hanging, wear a bar insulation protection rope on enclosed type coaster; At a ladder two ends, two of insulation tricing lines are respectively set respectively; Between the ladder body of both sides, from top to bottom arrange and open apart from three of tricing lines, reserved appropriate length, opening apart from one end and the side ladder body of tricing line is slip-knot, opens apart from the other end and the opposite side ladder body of tricing line and fastens; Ladders body in both sides arranges respectively collapse each two of the insulation pull rope of waist of anti-terraced body; On the foot of ladder of a side ladder body, foot of ladder fixture is set, foot of ladder fixture is followed closely in underground; Apart from a ladder 40-80cm place both sides ladder, cross-arm base is being installed respectively with it, cross-arm is flexibly connected with cross-arm base;
2) insulation double ladder promote: work director commander and specialize under tutorial monitoring, divide two groups by terraced body one side ground electrician, every group of each traction one thoroughly does away with edge pull rope, and ground electrician's tractive insulation protection rope of terraced body opposite side prevents from promoting excessive generation and falls terraced; Two ground electricians are with riding foot of ladder fixture, and both hands cooperation lifting, stand on ground to being herringbone to the double ladder that insulate;
3) double ladder that will insulate is in place: hold respectively four ground electricians under the condition of insulation tricing line, take off foot of ladder fixture; Ground electrician divides two groups insulation double ladder stationary transfers to first setting (with a shelves operating loop side), and ladder exceeds 1.6-0.8m than soft bus, and soft bus is apart from terraced body 100-150mm;
4) fixed insulation double ladder: the insulation tricing line at a ladder two ends is strained and fixed along the both sides extended line direction of ladder head respectively, and wherein a side is at least used wire grip in an eradication edge tricing line, makes rope tensile force be no less than 1KN; By the insulation pull rope tension of terraced body both sides, tie up to respectively on earth anchor, make both sides ladder body projection slightly laterally;
5) before ascending stair, prepare: equipotential electrician wears a complete set of qualified screening clothing, wears goggles, check that by specific responsibility guardian whether screening clothing outward appearance is good, whether each several part connection is reliable, whether protection sling is correct, qualified rear permission ascending stair;
6) ascending stair operation: two ground electricians respectively hold up a side ladder body, another two ground electrician's tractive insulation protection ropes, equipotential electrician is along a side ladder body ascending stair, in climbing, ensure that combinational gap is greater than 2.1m, phase spacing is greater than 2.5m, in way, successively three are opened apart from tricing line and fastened, until job position, fasten seat belts, shift current potential, enter highfield, human body exposed part should keep the safe distance of 0.3m, equipotential electrician hangs over shielding equalizer between soft bus and screening clothing, guarantee in the situation that both hands leave electrified body, also remain equipotential,
7) fixing soft bus: equipotential electrician installs two groups of wire fixed arms with it at a side ladder, and soft bus is held up by wire fixed arm, is banded in soft mother on wire fixed arm with copper wiring, prevents soft bus swing; Equipotential electrician will insulate little pole load in groove load with insulating cord bundle jail, afterbody insulating cord and the step bundle of little pole of insulating is firm, the fixing link of little pole end of making to insulate is placed in soft bus outside, the movable link insulating on little pole is positioned at soft bus inner side, and between two links, distance is to be slightly larger than new fixed contact width;
8) new fixed contact is prepared before installing: equipotential electrician hangs up properly locking coaster in the fixing link of insulation little pole end, in the movable link on the little pole of insulation, penetrates an extinguishing arc rope, connects an extinguishing arc line at extinguishing arc coaster between soft bus; A ground electrician surveys chi metal hanger insulating bar and hangs on soft bus, survey chi afterbody as for ground, survey chi middle part load in the middle of dumbbell shape moving contact, form sight alignment, find the center hanging point of soft bus static contact accurately, equipotential electrician makes after fixed contact and soft bus contact portion width mark with marking pen, uses wire brush in mark width, wire is processed totally, evenly coated neutral vaseline;
Ground electrician removes paint on fixed contact connecting plate and the parallel groove clamp assembling and dirty, coat neutral vaseline, lift to operating location below, the insulation stay cord and the extinguishing arc tail of rope portion that hang down at the little pole of insulation according to fixed contact size side-line, be again one in fixed contact bottom and promote tricing line;
9) fixed contact is installed: under work director's commander, two ground electricians distinguish the fag end of tractives insulation stay cord and extinguishing arc rope, ground electrician's tractive promotes tricing line, make fixed contact slowly approach soft bus, equipotential electrician turns to arcing opposition side head, and the high temperature of avoiding arc light to produce is burnt;
In the time that fixed contact is steadily parked in 50-60mm place, soft bus below, equipotential electrician pulls down parallel groove clamp bolt on fixed contact connecting plate, parallel groove clamp upper buckle on soft bus, two ground electricians continue to promote fixed contact, in the time of parallel groove clamp bottom on fixed contact connecting plate and top joint close, stop promoting, equipotential electrician installs parallel groove clamp bolt, ground electrician checks soft bus static contact center with insulating bar survey chi and meets after standard, and equipotential electrician is parallel groove clamp bolt tightening;
10) EO exits: equipotential electrician removes lifting tricing line, extinguishing arc rope and the insulation stay cord of colligation on fixed contact; Remove two groups of wire fixed arms; Allow through work director, equipotential electrician removes shielding equalizer, shifts current potential, exits equipotential state, and human body exposed part is opened safety belt after keeping the safe distance of 0.3m, returns to ground along terraced passage;
11) shift insulation double ladder: the rope of opening all fixed ladder bodies, make whole ladder outside soft bus beyond side shifting 1m after, control rope with it of the ladder slow tilt drop of double ladder that makes to insulate, in the time that ladder head is above lower than soft bus 0.5m, two groups of ground electricians move to next setting, repeating step 1 by insulation double ladder from soft bus below) to step 10) charged dismounting fixed contact;
12) repeat the step 1 in installation steps) to step 11), until the whole dismountings of fixed contact on the soft bus of three-phase are complete.
Compared with prior art, the invention has the beneficial effects as follows:
1) by insulation double ladder as insulation manned platform, meet the Manipulative requirement of equipotential, volume is little, can lifting under soft bus, be applicable to the charged for replacement operation of the soft bus GW6 series of 220kV single-column, twin columns vertical opening type isolating switch fixed contact.
2) avoided causing busbar fault because of fixed contact heating, scaling loss, the problem such as aging; Create conditions for formulating Plant maintenance plan, perfect hotline maintenance project; Reduce operations staff's grid switching operation number of times, prevented from the power grid accident that causes because of misoperation from having reduced frequency of power cut and interruption duration.
3) promote scientific and technological progress, improved power supply reliability, eliminated safety in production hidden danger, ensured safe power supply, there is significant Social benefit and economic benefit.
4) filled up the soft bus GW6 of 220kV Series Switch-disconnector fixed contact, the blank of charged dismounting and installation project is with a wide range of applications and promotional value in national grid system.
Brief description of the drawings
Fig. 1 is the present invention's double ladder embodiment working state structure schematic diagram that insulate;
Fig. 2 is the end view of Fig. 1.
In figure: a 1-ladder 2-ladder body 3-cleat stanchion 4-step 5-hanger 6-insulation tricing line 7-enclosed type coaster 8-insulation protection rope 9-wire fixed arm 10-opens the movable link of the fixing link 17-of little pole 16-that insulate apart from tricing line 11-insulation pull rope 12-earth anchor 13-cross-arm base 14-cross-arm 15-
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described further:
Seeing Fig. 1, Fig. 2, is the present invention's double ladder embodiment working state structure schematic diagram that insulate, and comprises ladder 1 and two terraced bodies 2 that are made up of cleat stanchion 3, step 4, and cleat stanchion 3 length are 10.5-12.5 rice; Ladder 1 two ends are respectively equipped with hanger 5, have fastened two eradication edge tricing lines 6 on each hanger 5, and enclosed type coaster 7 hangs on one of them hanger 5, wear a bar insulation protection rope 8 on the pulley of enclosed type coaster; One side ladder is provided with wire fixed arm 9 with it, and wire fixed arm 9 is apart from a ladder 1.6-0.8m; Between two terraced bodies 2, from top to bottom arrange and open apart from 10 3 of tricing lines; Two terraced bodies outsides arrange respectively collapse each two of the insulation pull rope 11 of waist of anti-terraced body, and insulation tricing line 6 is connected with earth anchor 12 respectively with the tail of rope of insulation pull rope 11.
The homonymy of two terraced bodies 2 is respectively equipped with cross-arm base 13, cross-arm 14 is connected with two cross-arm bases 13 respectively, cross-arm 14 is positioned at apart from a ladder 40-80cm place, between cross-arm 14 and the step of a slice ladder body, be provided with the little pole 15 of insulation, make to insulate little pole 15 heads towards fore side perk, little pole 15 ends of insulating are provided with fixing link 16, and the little pole stage casing of insulating is provided with movable link 17.
When the method for the soft bus static contact of charged for replacement 220kV of the present invention operates, operating personnel rises under soft bus along insulation double ladder, adopts idiostatic method to shift current potential, the soft bus static contact of charged for replacement, comprise demounting procedure and installation steps, concrete operation step is as follows:
One, demounting procedure:
1) insulation double ladder is prepared before promoting: first at an enclosed type coaster of insulation double ladder top hanging, wear a bar insulation protection rope on enclosed type coaster; At a ladder two ends, two of insulation tricing lines are respectively set respectively, wherein two is the outside tractive of splayed configuration, and another two is the backward outer tractive of X font intersection; Between the ladder body of both sides, from top to bottom (being respectively apart from ladder a 3m, 6m, 9m place) arranges and opens apart from three of tricing lines, reserved appropriate length, and opening apart from one end and the side ladder body of tricing line is slip-knot, opens apart from the other end and the opposite side ladder body of tricing line and fastens; Ladders body in both sides arranges respectively collapse each two of the insulation pull rope of waist of anti-terraced body, and respectively apart from a ladder 3m, 6m place, stressed even for ensureing, the two ends fag end of a bar insulation pull rope ties up to respectively on the cleat stanchion of both sides, tractive stage casing; On the foot of ladder of a side ladder body, foot of ladder fixture is set, foot of ladder fixture is followed closely in underground;
2) insulation double ladder promote: work director commander and specialize under tutorial monitoring, divide two groups by terraced body one side ground electrician, every group of each traction one thoroughly does away with edge pull rope, and ground electrician's tractive insulation protection rope of terraced body opposite side prevents from promoting excessive generation and falls terraced; Two ground electricians are with riding foot of ladder fixture, and both hands cooperation lifting, stand on ground to being herringbone to the double ladder that insulate;
3) double ladder that will insulate is in place: hold respectively four ground electricians under the condition of insulation tricing line, take off foot of ladder fixture; Ground electrician divide two groups insulation double ladder stationary transfers to first setting (with a shelves operating loop side), ladder head than soft bus exceed 1.6-0.8m (because of phase place different and variant from degree of speeding), soft bus is apart from terraced body 100-150mm; In moving process, personnel want energy concentrated, and horizontal play is unsuitable excessive, accept work director unified command, forbid terraced body to touch bus, terraced, injure operational outfit around by a crashing object, prevent that busbar fault from occurring;
4) fixed insulation double ladder: foot of ladder is fixed on isolating switch concrete column, the insulation tricing line at a ladder two ends is strained and fixed on fixture or on earth anchor along the both sides extended line direction of ladder head respectively, wherein a side is at least used wire grip on a rope, makes rope tensile force be no less than 1KN; By the insulation pull rope tension of terraced body both sides, tie up to respectively on earth anchor fixing, make both sides ladder body slightly laterally projection be advisable, all remaining insulating cords will be placed in special pocket, prevent dirty, make moist, reduce dielectric strength;
5) before ascending stair, prepare: equipotential electrician wears a complete set of qualified screening clothing, wears goggles, check that by specific responsibility guardian whether screening clothing outward appearance is good, whether each several part connection is reliable, whether protection sling is correct, qualified rear permission ascending stair;
6) ascending stair operation: two ground electricians respectively hold up a side ladder body, another two ground electrician's tractive insulation protection ropes, equipotential electrician is along a side ladder body ascending stair, in climbing, ensure that combinational gap is greater than 2.1m, phase spacing is greater than 2.5m, in way, successively three are opened apart from tricing line and fastened, until job position, fasten seat belts, shift current potential, enter highfield, human body exposed part should keep the safe distance of 0.3m, equipotential electrician hangs over shielding equalizer between soft bus and screening clothing, guarantee in the situation that both hands leave electrified body, also remain equipotential, before equipotential electrician does not fasten seat belts, two ground electricians draw insulation protection rope all the time, the safe ascending stair of protection equipotential electrician,
7) fixing soft bus: equipotential electrician installs two groups of wire fixed arms with it at a side ladder, and soft bus is held up by wire fixed arm, with 400~450mm long 2.5 2copper cash is banded in soft bus on wire fixed arm, and the take-up strap number of turns must not be less than 3 circles, prevents that soft bus from swinging;
8) remove fixed contact: extinguishing arc coaster is hung on soft bus, and one, extinguishing arc rope in the first side T-shape cable clamp of stationary contact bottom, has fixed contact to be no less than the room for promotion of 100mm through the pulley colligation of extinguishing arc coaster, and extinguishing arc rope tail of rope is controlled by a ground electrician; On the step a little more than soft bus, be to hang what a locking coaster with electrodeless rope sling, one of insulation pull rope passes the pulley of locking coaster and ties up in fixed contact opposite side T-shape cable clamp bottom, and the pull rope tail of rope that insulate is controlled by a ground electrician; On fixed contact, one of colligation falls to controlling insulating cord again, falls to controlling insulating cord tail of rope and is controlled by another ground electrician;
Equipotential electrician first unloads the φ 12mm bolt of T-shaped wire clamp one side of fixed contact, then unloads the bolt of opposite side; In operating process, control two ground electricians of extinguishing arc rope and insulation pull rope tail of rope, coordinate tension rope;
As remove in soft bus static contact loop, while having busbar grounding cutter drainage thread, the charged dismounting drainage thread of standardized work guiding book is drawn in the charged disconnecting of 220kV of first promulgating according to company of province, carries out Analysis about Dangerous Point and security control measure, does not do here and sets forth explanation.
9) fall fixed contact: under work director's commander, equipotential electrician will turn to arcing opposition side head, the high temperature of avoiding arc light to produce is burnt, two ground electricians control respectively extinguishing arc rope and insulating cord starts slack rope, a ground electrician controls fixed contact and falls to controlling insulating cord, make fixed contact depart from soft bus and slowly drop on ground, avoid fixed contact to clash into isolating switch moving contact and insulation supporting pillar, cause device damage to occur;
10) EO exits: equipotential electrician removes the aluminium infantees being wrapped on soft bus, the copper cash of the fixing soft bus on wire fixed arm is opened, allow through work director, equipotential electrician removes shielding equalizer, shift current potential, exit equipotential state, human body exposed part keeps the safe distance of 0.3m, open safety belt, return to ground along ladder;
11) shift insulation double ladder: the rope of opening all fixed ladder bodies, make whole ladder outside soft bus beyond side shifting 1m after, control rope with it of the ladder slow tilt drop of double ladder that makes to insulate, in the time that ladder head is above lower than soft bus 0.5m, one group of three people of two groups of ground electricians lifts ladder, another group is as you were, alternately mobile, insulation double ladder is moved to next setting from soft bus below, repeating step 1) to step 10) charged dismounting fixed contact, as there is the critical person and equipment situation, should stop operation immediately; When there is the cable trench of laying on ground, when impact insulation double ladder is put, the one, can take hard article to level up, the 2nd, opening apart from tricing line of the terraced body that lengthens, strengthens terraced body angle, crosses over the cable trench of laying, and insulating, double ladder is put best job position;
12) step 1 in repeated removal step) to step 11), until the whole dismountings of the soft bus upper static contact of three-phase are complete, can start other work by power equipment maintaining personnel.
Two, installation steps:
1) insulation double ladder is prepared before promoting: first at an enclosed type coaster of insulation double ladder top hanging, wear a bar insulation protection rope on enclosed type coaster; At a ladder two ends, two of insulation tricing lines are respectively set respectively, wherein two is the outside tractive of splayed configuration, and another two is the backward outer tractive of X font intersection; Between the ladder body of both sides, from top to bottom (being respectively apart from ladder a 3m, 6m, 9m place) arranges and opens apart from three of tricing lines, reserved appropriate length, and opening apart from one end and the side ladder body of tricing line is slip-knot, opens apart from the other end and the opposite side ladder body of tricing line and fastens; Ladders body in both sides arranges respectively collapse each two of the insulation pull rope of waist of anti-terraced body, and respectively apart from a ladder 3m, 6m place, stressed even for ensureing, the two ends fag end of a bar insulation pull rope ties up to respectively on the cleat stanchion of both sides, tractive stage casing; On the foot of ladder of a side ladder body, foot of ladder fixture is set, foot of ladder fixture is followed closely in underground; Apart from a ladder 40-80cm place both sides ladder, cross-arm base is being installed respectively with it, cross-arm is flexibly connected with cross-arm base, and the screw on cross-arm and cross-arm base is not tightened, and keeps screw rod freely accessible slip in cross-arm slotted eye;
2) insulation double ladder promote: work director commander and specialize under tutorial monitoring, divide two groups by terraced body one side ground electrician, every group of each traction one thoroughly does away with edge pull rope, and ground electrician's tractive insulation protection rope of terraced body opposite side prevents from promoting excessive generation and falls terraced; Two ground electricians are with riding foot of ladder fixture, and both hands cooperation lifting, stand on ground to being herringbone to the double ladder that insulate;
3) double ladder that will insulate is in place: hold respectively four ground electricians under the condition of insulation tricing line, take off foot of ladder fixture; Ground electrician divides two groups, every group of three people, insulation double ladder is replaced to stationary transfer to first setting (with a shelves operating loop side), ladder head than soft bus exceed 1.6-0.8m (because of phase place different and variant from degree of speeding), soft bus is apart from terraced body 100-150mm; Ladder afterbody is fixed on isolating switch concrete column with insulating cord; In moving process, personnel want energy concentrated, and horizontal play is unsuitable excessive, accept work director unified command, forbid terraced body to touch bus, terraced, injure operational outfit around by a crashing object, prevent that busbar fault from occurring.
4) fixed insulation double ladder: the insulation tricing line at a ladder two ends is strained and fixed along the both sides extended line direction of ladder head respectively, wherein a side is at least used wire grip in an eradication edge tricing line, check that whether wire grip jump ring fixed position is correct, make rope tensile force be no less than 1KN; By the insulation pull rope tension of terraced body both sides, tie up to respectively on earth anchor, make both sides ladder body slightly laterally projection be advisable, exempt from people get on after the terraced body waist that collapses, all remaining insulation fag ends are placed in special pocket, prevent dirty, make moist, reduce dielectric strength;
5) before ascending stair, prepare: equipotential electrician wears a complete set of qualified screening clothing, wears goggles, check that by specific responsibility guardian whether screening clothing outward appearance is good, whether each several part connection is reliable, whether protection sling is correct, qualified rear permission ascending stair;
6) ascending stair operation: two ground electricians respectively hold up a side ladder body, another two ground electrician's tractive insulation protection ropes, equipotential electrician is along a side ladder body ascending stair, in climbing, ensure that combinational gap is greater than 2.1m, phase spacing is greater than 2.5m, in way, successively three are opened apart from tricing line and fastened, until job position, fasten seat belts, shift current potential, enter highfield, human body exposed part should keep the safe distance of 0.3m, equipotential electrician hangs over shielding equalizer between soft bus and screening clothing, guarantee in the situation that both hands leave electrified body, also remain equipotential, before equipotential electrician does not fasten seat belts, two ground electricians draw insulation protection rope all the time, the safety of protection equipotential electrician ascending stair,
7) fixing soft bus: equipotential electrician installs two groups of wire fixed arms with it at a side ladder, and soft bus is held up by wire fixed arm, with 400~450mm long 2.5 2copper wiring soft mother is banded on wire fixed arm, the take-up strap number of turns must not be less than 3 circles, prevents that soft bus from swinging; Equipotential electrician will insulate little pole load in groove load with insulating cord bundle jail, afterbody insulating cord and the step bundle of little pole of insulating is firm, bar head is a little more than bar tail, the fixing link of little pole end of making to insulate is placed in 50mm outside soft bus, the movable link insulating on little pole is positioned at 50mm inside soft bus, and between two links, distance is advisable to be slightly larger than new fixed contact width;
8) new fixed contact is prepared before installing: equipotential electrician hangs up properly locking coaster in the fixing link of insulation little pole end, insulation stay cord two of passing on pulley is all in ground instrument pocket, in movable link on the little pole of insulation, hang up properly extinguishing arc coaster, extinguishing arc rope two of passing on pulley is all in ground instrument pocket, and extinguishing arc coaster connects an extinguishing arc line between soft bus; A ground electrician surveys chi metal hanger insulating bar and hangs on soft bus, survey chi afterbody as for ground, survey chi middle part load in the middle of dumbbell shape moving contact, form sight alignment, find the center hanging point of soft bus static contact accurately, equipotential electrician makes after fixed contact and soft bus contact portion width mark with marking pen, uses wire brush in mark width, wire is processed totally, evenly coated neutral vaseline;
Ground electrician removes paint on fixed contact connecting plate and the parallel groove clamp assembling and dirty, coat neutral vaseline, lift to operating location below, fasten respectively according to fixed contact size side insulation stay cord and the extinguishing arc fag end portion that the little pole of insulation hangs down, be again one at fixed contact and promote tricing line;
9) fixed contact is installed: under work director's commander, two ground electricians distinguish the fag end of tractives insulation stay cord and extinguishing arc rope, ground electrician's tractive promotes tricing line, make fixed contact negotiate terrain vertical opening type isolating switch slowly approach soft bus, avoid fixed contact to clash into isolating switch moving contact and insulation supporting pillar, cause device damage to occur, equipotential electrician turns to arcing opposition side head, and the high temperature of avoiding arc light to produce is burnt;
In the time that fixed contact is steadily parked in 50-60mm place, soft bus below, equipotential electrician pulls down parallel groove clamp bolt on fixed contact connecting plate, parallel groove clamp upper buckle on soft bus, two ground electricians continue to promote fixed contact, in the time of parallel groove clamp bottom on fixed contact connecting plate and top joint close, stop promoting, equipotential electrician installs parallel groove clamp bolt, ground electrician checks soft bus static contact center with insulating bar survey chi and meets after standard, and equipotential electrician is parallel groove clamp bolt tightening;
10) EO exits: equipotential electrician removes lifting tricing line, extinguishing arc rope and the insulation stay cord of colligation on fixed contact; Remove two groups of wire fixed arms; Allow through work director, equipotential electrician removes shielding equalizer, shifts current potential, exits equipotential state, and human body exposed part is opened safety belt after keeping the safe distance of 0.3m, returns to ground along terraced passage;
11) shift insulation double ladder: the rope of opening all fixed ladder bodies, make whole ladder outside soft bus beyond side shifting 1m after, control rope with it of the ladder slow tilt drop of double ladder that makes to insulate, in the time that ladder head is above lower than soft bus 0.5m, two groups of ground electricians move to next setting, repeating step 1 by insulation double ladder from soft bus below) to step 10) charged dismounting fixed contact;
12) step 1 in repetition installation steps) to step 11), until the whole dismountings of fixed contact on the soft bus of three-phase are complete, after on-the-spot whole operations complete, remove insulation double ladder, finisher's utensil, withdraws scene, work director handles work ticket, power cut-off.

Claims (1)

1. the method for the soft bus static contact of charged for replacement 220kV, is characterized in that, operating personnel rises under soft bus along insulation double ladder, adopt idiostatic method to shift current potential, the soft bus static contact of charged for replacement, comprises demounting procedure and installation steps, and concrete operation step is as follows:
One, demounting procedure:
1) insulation double ladder is prepared before promoting: first at an enclosed type coaster of insulation double ladder top hanging, wear a bar insulation protection rope on enclosed type coaster; At a ladder two ends, two of insulation tricing lines are respectively set respectively; Between the ladder body of both sides, from top to bottom arrange and open apart from three of tricing lines, reserved appropriate length, opening apart from one end and the side ladder body of tricing line is slip-knot, opens apart from the other end and the opposite side ladder body of tricing line and fastens; Ladders body in both sides arranges respectively collapse each two of the insulation pull rope of waist of anti-terraced body; On the foot of ladder of a side ladder body, foot of ladder fixture is set, foot of ladder fixture is followed closely in underground;
2) insulation double ladder promote: work director commander and specialize under tutorial monitoring, divide two groups by terraced body one side ground electrician, every group of each traction one thoroughly does away with edge pull rope, and ground electrician's tractive insulation protection rope of terraced body opposite side prevents from promoting excessive generation and falls terraced; Two ground electricians are with riding foot of ladder fixture, and both hands cooperation lifting, stand on ground until insulation double ladder is herringbone;
3) double ladder that will insulate is in place: hold respectively four ground electricians under the condition of insulation tricing line, take off foot of ladder fixture; Ground electrician divides two groups insulation double ladder stationary transfers to first setting, and ladder head exceeds 1.6-0.8m than soft bus, and soft bus is apart from terraced body 100-150mm;
4) fixed insulation double ladder: the insulation tricing line at a ladder two ends is strained and fixed along the both sides extended line direction of ladder head respectively, and wherein a side is at least used wire grip in an eradication edge tricing line, makes rope tensile force be no less than 1KN;
By the insulation pull rope tension of terraced body both sides, tie up to respectively on earth anchor and fix, make both sides ladder body projection slightly laterally;
5) before ascending stair, prepare: equipotential electrician wears a complete set of qualified screening clothing, wears goggles, check that by specific responsibility guardian whether screening clothing outward appearance is good, whether each several part connection is reliable, whether protection sling is correct, qualified rear permission ascending stair;
6) ascending stair operation: two ground electricians respectively hold up a side ladder body, another two ground electrician's tractive insulation protection ropes, equipotential electrician is along a side ladder body ascending stair, in climbing, ensure that combinational gap is greater than 2.1m, phase spacing is greater than 2.5m, in way, successively three are opened apart from tricing line and fastened, until job position, fasten seat belts, shift current potential, enter highfield, human body exposed part should keep the safe distance of 0.3m, equipotential electrician hangs over shielding equalizer between soft bus and screening clothing, guarantee in the situation that both hands leave electrified body, also remain equipotential,
7) fixing soft bus: equipotential electrician installs two groups of wire fixed arms with it at a side ladder, and soft bus is held up by wire fixed arm, is banded in soft bus on wire fixed arm with copper cash, prevents soft bus swing;
8) remove fixed contact: extinguishing arc coaster is hung on soft bus, and one, extinguishing arc rope in the first side T-shape cable clamp of stationary contact bottom, has fixed contact to be no less than the room for promotion of 100mm through the pulley colligation of extinguishing arc coaster, and extinguishing arc rope tail of rope is controlled by a ground electrician; On the step a little more than soft bus, be a locking coaster with electrodeless rope sling, one of insulating cord passes the pulley of locking coaster and ties up in fixed contact opposite side T-shape cable clamp bottom, and insulating cord tail of rope is controlled by a ground electrician; On fixed contact, one of colligation falls to controlling insulating cord, falls to controlling insulating cord tail of rope and is controlled by another ground electrician;
Equipotential electrician first unloads the bolt of T-shaped wire clamp one side of fixed contact, then unloads the bolt of opposite side, in operating process, controls two ground electricians of extinguishing arc rope and insulating cord tail of rope, coordinates tension tail of rope;
9) fall fixed contact: under work director's commander, two ground electricians control respectively extinguishing arc rope and insulating cord starts slack rope, another ground electrician controls and falls to controlling insulating cord angle, makes fixed contact depart from soft bus and slowly drops on ground;
10) EO exits: equipotential electrician removes the aluminium infantees being wrapped on soft bus, the copper cash of the fixing soft bus on wire fixed arm is opened, allow through work director, equipotential electrician removes shielding equalizer, shift current potential, exit equipotential state, human body exposed part keeps the safe distance of 0.3m, open safety belt, return to ground along ladder;
11) shift insulation double ladder: the rope of opening all fixed ladder bodies, make whole ladder outside soft bus beyond side shifting 1m after, control rope with it of the ladder slow tilt drop of double ladder that makes to insulate, in the time that ladder head is above lower than soft bus 0.5m, two groups of ground electricians move to next setting, repeating step 1 by insulation double ladder from soft bus below) to step 10) charged dismounting fixed contact;
12) step 1 in repeated removal step) to step 11), until the whole dismountings of the soft bus upper static contact of three-phase are complete;
Two, installation steps:
1) insulation double ladder is prepared before promoting: first at an enclosed type coaster of insulation double ladder top hanging, wear a bar insulation protection rope on enclosed type coaster; At a ladder two ends, two of insulation tricing lines are respectively set respectively; Between the ladder body of both sides, from top to bottom arrange and open apart from three of tricing lines, reserved appropriate length, opening apart from one end and the side ladder body of tricing line is slip-knot, opens apart from the other end and the opposite side ladder body of tricing line and fastens; Ladders body in both sides arranges respectively collapse each two of the insulation pull rope of waist of anti-terraced body; On the foot of ladder of a side ladder body, foot of ladder fixture is set, foot of ladder fixture is followed closely in underground; Apart from a ladder 40-80cm place both sides ladder, cross-arm base is being installed respectively with it, cross-arm is flexibly connected with cross-arm base;
2) insulation double ladder promote: work director commander and specialize under tutorial monitoring, divide two groups by terraced body one side ground electrician, every group of each traction one thoroughly does away with edge pull rope, and ground electrician's tractive insulation protection rope of terraced body opposite side prevents from promoting excessive generation and falls terraced; Two ground electricians are with riding foot of ladder fixture, and both hands cooperation lifting, stand on ground to being herringbone to the double ladder that insulate;
3) double ladder that will insulate is in place: hold respectively four ground electricians under the condition of insulation tricing line, take off foot of ladder fixture; Ground electrician divides two groups insulation double ladder stationary transfers to first setting, and ladder head exceeds 1.6-0.8m than soft bus, and soft bus is apart from terraced body 100-150mm;
4) fixed insulation double ladder: the insulation tricing line at a ladder two ends is strained and fixed along the both sides extended line direction of ladder head respectively, and wherein a side is at least used wire grip in an eradication edge tricing line, makes rope tensile force be no less than 1KN; By the insulation pull rope tension of terraced body both sides, tie up to respectively on earth anchor, make both sides ladder body projection slightly laterally;
5) before ascending stair, prepare: equipotential electrician wears a complete set of qualified screening clothing, wears goggles, check that by specific responsibility guardian whether screening clothing outward appearance is good, whether each several part connection is reliable, whether protection sling is correct, qualified rear permission ascending stair;
6) ascending stair operation: two ground electricians respectively hold up a side ladder body, another two ground electrician's tractive insulation protection ropes, equipotential electrician is along a side ladder body ascending stair, in climbing, ensure that combinational gap is greater than 2.1m, phase spacing is greater than 2.5m, in way, successively three are opened apart from tricing line and fastened, until job position, fasten seat belts, shift current potential, enter highfield, human body exposed part should keep the safe distance of 0.3m, equipotential electrician hangs over shielding equalizer between soft bus and screening clothing, guarantee in the situation that both hands leave electrified body, also remain equipotential,
7) fixing soft bus: equipotential electrician installs two groups of wire fixed arms with it at a side ladder, and soft bus is held up by wire fixed arm, is banded in soft mother on wire fixed arm with copper wiring, prevents soft bus swing; Equipotential electrician will insulate little pole load in groove load with insulating cord bundle jail, afterbody insulating cord and the step bundle of little pole of insulating is firm, the fixing link of little pole end of making to insulate is placed in soft bus outside, the movable link insulating on little pole is positioned at soft bus inner side, and between two links, distance is to be slightly larger than new fixed contact width;
8) new fixed contact is prepared before installing: equipotential electrician hangs up properly locking coaster in the fixing link of insulation little pole end, in the movable link on the little pole of insulation, penetrates an extinguishing arc rope, connects an extinguishing arc line at extinguishing arc coaster between soft bus; A ground electrician surveys chi metal hanger insulating bar and hangs on soft bus, survey chi afterbody as for ground, survey chi middle part load in the middle of dumbbell shape moving contact, form sight alignment, find the center hanging point of soft bus static contact accurately, equipotential electrician makes after fixed contact and soft bus contact portion width mark with marking pen, uses wire brush in mark width, wire is processed totally, evenly coated neutral vaseline;
Ground electrician removes paint on fixed contact connecting plate and the parallel groove clamp assembling and dirty, coat neutral vaseline, lift to operating location below, the insulation stay cord and the extinguishing arc tail of rope portion that hang down at the little pole of insulation according to fixed contact size side-line, be again one in fixed contact bottom and promote tricing line;
9) fixed contact is installed: under work director's commander, two ground electricians distinguish the fag end of tractives insulation stay cord and extinguishing arc rope, ground electrician's tractive promotes tricing line, make fixed contact slowly approach soft bus, equipotential electrician turns to arcing opposition side head, and the high temperature of avoiding arc light to produce is burnt;
In the time that fixed contact is steadily parked in 50-60mm place, soft bus below, equipotential electrician pulls down parallel groove clamp bolt on fixed contact connecting plate, parallel groove clamp upper buckle on soft bus, two ground electricians continue to promote fixed contact, in the time of parallel groove clamp bottom on fixed contact connecting plate and top joint close, stop promoting, equipotential electrician installs parallel groove clamp bolt, ground electrician checks soft bus static contact center with insulating bar survey chi and meets after standard, and equipotential electrician is parallel groove clamp bolt tightening;
10) EO exits: equipotential electrician removes lifting tricing line, extinguishing arc rope and the insulation stay cord of colligation on fixed contact; Remove two groups of wire fixed arms; Allow through work director, equipotential electrician removes shielding equalizer, shifts current potential, exits equipotential state, and human body exposed part is opened safety belt after keeping the safe distance of 0.3m, returns to ground along terraced passage;
11) shift insulation double ladder: the rope of opening all fixed ladder bodies, make whole ladder outside soft bus beyond side shifting 1m after, control rope with it of the ladder slow tilt drop of double ladder that makes to insulate, in the time that ladder head is above lower than soft bus 0.5m, two groups of ground electricians move to next setting, repeating step 1 by insulation double ladder from soft bus below) to step 10) charged dismounting fixed contact;
12) repeat the step 1 in installation steps) to step 11), until the whole dismountings of fixed contact on the soft bus of three-phase are complete.
CN201210120939.2A 2012-04-23 2012-04-23 Live replacement method for static contact of 220 kV flexible busbar CN102664358B (en)

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