CN104752996A - Method for live replacement of tension duplex whole-string insulators of 330kV power transmission line - Google Patents

Method for live replacement of tension duplex whole-string insulators of 330kV power transmission line Download PDF

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Publication number
CN104752996A
CN104752996A CN201510183472.XA CN201510183472A CN104752996A CN 104752996 A CN104752996 A CN 104752996A CN 201510183472 A CN201510183472 A CN 201510183472A CN 104752996 A CN104752996 A CN 104752996A
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insulator
electrician
insulation
ground
tower
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CN104752996B (en
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孙玉诚
郭文羽
李涛
王有德
杨富文
赵剑波
王进昌
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TRAINING CENTER OF STATE GRID QINGHAI ELECTRIC POWER Co
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TRAINING CENTER OF STATE GRID QINGHAI ELECTRIC POWER Co
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Abstract

The invention relates to the technical field of power transmission, in particular to a method for live replacement of tension duplex whole-string insulators of a 330kV power transmission line. The method includes the following steps: 1), demounting the insulators needing to be replaced; 2), mounting new insulators. The novel method is simple, convenient and practical. The invention provides various tools and instruments like a novel bottle supporting frame, a special pulley block and a clamp for replacing the tension duplex whole-string insulators of the 330kV line. Replacement work of the tension duplex whole-string insulators of the 330kV line can be completed safely, accurately, quickly and efficiently, simplicity, convenience and flexibility in operation and safety and reliability in use are realized, construction cost can be lowered, and operating and construction efficiency can be improved. The method is simple, convenient, easy in operation, high in safety and suitable for live or uncharged maintenance of the tension duplex whole-string insulators of the 330kV line.

Description

330kV electric transmission line hot-line changes strain insulator duplex bunch of insulator method
Technical field
The present invention relates to technical field of electric power transmission, specifically relate to a kind of 330kV electric transmission line hot-line and change strain insulator duplex bunch of insulator method.
Background technology
One of power supply enterprise's production and operation target is exactly reduce the interruption duration of power equipment, improves power supply reliability and economic benefit.Power supply enterprise adopts live line working abatement apparatus defect, reducing the line outage time is one of important means realizing productive target, charged for replacement 330kV power line tension insulator string is a routine and important live line working project, the multiple types of tools such as machete card, bent plate card, insulation pulling plate, bottle-holding rack, insulation coaster, insulation ropes need be used to support the use just can complete during operation.Through statistics, 330kV transmission circuit insulator string majority adopts two string compound mode, the sheet number configuration of insulator string raises with height above sea level and increases, generally at 21 to 24 not etc., because the bottle-holding rack length in conventional tool does not possess adjustability, the insulator string of each length need be equipped with the bottle-holding rack of corresponding length, like this, each production unit just need be equipped with many cover different length bottle supporting instruments, and traditional Work tool weight is large, structure is long, installs, transport and be inconvenient; In addition, when power line conductive line tension is less, insulator string can form comparatively the Nature stretched wire and bend, and in conventional tool, bottle-holding rack structure is all level design, cannot use.Analyze the deficiency that above conventional method mainly exists following several respects:
1, versatility is not possessed.The insulator kind that transmission line uses is many, mainly contain plain edition insulator, anti-pollution type insulator, three umbrella insulators, composite insulator etc., each insulator structure is different, size is also different, its connecting length is also different, and traditional Work tool does not possess versatility feature, not only infusion of financial resources is large, and manage, transport, use very inconvenient.
2, the larger insulator string of flexibility cannot be changed.Tradition bottle supporting instrument is linked and packed with pipe typed insulation material and metal material to form, and bottle supporting instrument critical component adopts horizontal design, cannot change the insulator that the wire tensions such as similar terminal tower are less, insulator string flexibility is large.
3, weight is large.Because transmission line majority is arranged in high mountain high hill, a lot of shaft tower vehicle cannot travel and put in place, and conventional tool weight is generally at about 40 kilograms, and make Work tool transport very inconvenience, work high above the ground is also difficult.
For above problem, on a set of lightweight of development, universal bottle-holding rack and coaster basis, with machete card, bent plate card and insulation pulling plate with the use of, work out and change 330kV strain tower strain insulator-string duplex bunch of insulator overall procedure.
Summary of the invention
The technical problem to be solved in the present invention is the deficiency existed for prior art, provides a kind of 330kV electric transmission line hot-line to change strain insulator duplex bunch of insulator method and for the lightweight of charged for replacement 330kV strain tower duplex bunch of insulator, universal bottle-holding rack and coaster.
A kind of 330kV electric transmission line hot-line of the present invention is changed strain insulator duplex bunch of insulator method and is achieved by following technical proposals: a kind of 330kV electric transmission line hot-line is changed strain insulator duplex bunch of insulator method and comprised the steps:
1) dismounting need change insulator step
1. on tower, electrician, equipotential electrician cooperatively interact at 330kV strain insulator twin insulator strings both sides installation machete card, bent plate card, insulation pulling plate and corner block;
2. ground electrician by closed fixture, turn to connector, insulation pulling plate, balancing pull rod Connecting groups synthesize bottle-holding rack pass to equipotential electrician;
3. bottle-holding rack is arranged on side of wire the 3rd insulator steel cap by equipotential electrician, buckle well blocking bolt, tie up in the middle of bottle-holding rack lifting rope baffle plate after being placed into the pulley groove of corner block after insulation lifting rope being first each passed through insulation lifting rope lower block, insulation lifting rope upper pulley again, take out conductor wire end first insulator locking pin;
4. on tower electrician to tighten up the leading screw of machete card very heavy, loosen insulator string, and mechanical shock inspection done to insulation pulling plate, machete card, bent plate card;
5. ground electrician tighten up insulation lifting rope make insulator string conductor wire end in depart from stress, equipotential electrician and ground electrician cooperatively interact and throw off the connection of side of wire first insulator and twin sockets;
6. ground electrician loosens insulation lifting rope, and side of wire insulator string is relaxed to the state of naturally drooping together in company with bottle-holding rack;
on tower, insulation is transmitted after rope is each passed through insulation transmission rope lower slide car, insulation transmission rope upper pulley and is tied up on cross-arm side the 3rd or second insulator steel cap by electrician;
8. ground electrician tighten up insulation transmit rope make insulator be disengaging stress, on tower, electrician throws off the connection of cross-arm side first insulator and right angle link plate;
9. ground electrician slowly loosen insulation transmit rope old matter insulator string is passed to ground, remove bottle-holding rack;
2) new insulator step is installed
1. ground electrician more renews insulator, closed fixture, the bottle-holding rack that turns to connector, insulation pulling plate, balancing pull rod Connecting groups to synthesize are arranged on side of wire the 3rd insulator steel cap, buckle well blocking bolt, insulation lifting rope is tied up in the middle of bottle-holding rack baffle plate, then insulation transmission rope is tied up on cross-arm side the 3rd insulator;
2. ground, ground work is tightened up insulation and is transmitted rope, and insulator string is passed to cross arm of tower place together in company with bottle-holding rack;
3. on tower, electrician and ground, ground work cooperatively interact and recover the connection of cross-arm side first insulator and right angle link plate;
4. ground electrician slowly tightens up insulation lifting rope, and lifting lead wire side insulator is to recovering front state, and equipotential electrician and ground electrician cooperatively interact and recover the connection of side of wire first insulator and twin sockets;
5. on tower electrician to loosen the leading screw of machete card very heavy, insulator string is slowly made to recover stress, equipotential electrician on inspection each parts connects normally, coordinates and machete card, insulation pulling plate, bent plate card, bottle-holding rack is removed, be passed to ground successively with equipotential electrician;
6. equipotential electrician carries insulation lifting rope and is back to cross-arm and lower tower to enter the contrary method of electric field;
7. on tower on electrician's inspection bar tower, wire without after legacy, carrying insulation and transmitting the lower tower of rope to ground.
A kind of 330kV electric transmission line hot-line of the present invention changes strain insulator duplex bunch of insulator method following beneficial effect compared with prior art: it is rectangular frame type for the lightweight of charged for replacement 330kV strain tower strain insulator-string duplex bunch of insulator, universal bottle supporting instrument that a kind of 330kV of the present invention electric transmission line hot-line changes strain insulator duplex bunch of insulator method, during use, bottle supporting instrument is arranged on insulator string side of wire the 3rd insulator steel cap, and bottle supporting instrument of the present invention has, and lightweight, structure is simple, convenient transportation, install easy, easy and simple to handle; The installation span of bottle supporting instrument is little, only has the length of three insulators; Not by the impact of insulator string flexibility; Be applicable to various numbers (length) and various model porcelain insulator, glass insulator; Can use in line outage or charged situation.Two steps can be divided during operation to complete: the first step, Installation of New Type bottle supporting instrument and wheeled vehicle, tightly tie up on the lifting rope baffle plate of bottle-holding rack balancing pole the lifting rope tail end that insulate is lifted by crane the pulley of top sheave and wheeled vehicle through the insulation on steel tower cross-arm after, insulation lifting rope head end is tightened up through the insulation lifting lower sheave being fixed on steel tower root by surface personnel's control or loosened.When ground electrician tightens up insulation lifting rope, equipotential electrician can throw off the connection of side of wire twin sockets and insulator, and then ground electrician slowly loosens insulation lifting rope, and side of wire insulator string side slowly can fall to the state of naturally drooping.Second step, being each passed through after on column foot insulation transmission lower sheave and cross-arm, top sheave is transmitted in insulation by another eradication edge transmission rope ties up on cross-arm side the 3rd insulator, when ground electrician tightens up insulation transmission rope, on tower, electrician can throw off the connection of cross-arm side right angle link plate and insulator, then ground electrician slowly loosens insulation transmission rope, bunch of insulator can be put to ground.Recover new insulator string method of operation contrary with dismantling operation method.The present invention will change in electrical production charged and have a power failure change 330kV tension double-string bunch of insulator time method single present situation, and the problem such as when can solve charged or interruption maintenance 330kV tension double-string bunch of insulator, bottle supporting instrument weight used is excessive, the scope of application is limited, transportation and storage is difficult, the intensity alleviating staff can be reached, increase work efficiency, the object reduced costs.
It is wide, easy and simple to handle that a kind of 330kV electric transmission line hot-line of the present invention changes the strain insulator duplex bunch of insulator method scope of application, the method of traditional replacing 330kV strain insulator duplex bunch of insulator can be substituted completely, meet the instructions for use of live line working and interruption maintenance, cracked 330 kilovolt in puzzlement system for a long time and changed a series of difficult problems such as strain insulator-chain electrical insulator means are single, Work tool is heavy, operating cost is high.
A kind of 330kV electric transmission line hot-line of the present invention is changed in strain insulator duplex bunch of insulator method and newly be have developed a kind of lightweight, universal bottle supporting instrument and dedicated pulley.The bottle supporting instrument newly developed and dedicated pulley have that structure is simple, size is little, lightweight feature, in use not by insulation sub-pieces number, size, heavily quantitative limitation, be convenient to transport, humidity resistance is good, be convenient to keeping, without the need to preventative and inspectability electrical test advantage, safe and reliable, can production cost be reduced, improve operation and overhaul efficiency.
Accompanying drawing explanation
A kind of 330kV electric transmission line hot-line of the present invention changes strain insulator duplex bunch of insulator method following accompanying drawing:
Fig. 1 is that a kind of 330kV electric transmission line hot-line of the present invention changes strain insulator duplex bunch of insulator method bottle-holding rack structural representation;
Fig. 2 is that a kind of 330kV electric transmission line hot-line of the present invention changes the main TV structure schematic diagram of strain insulator duplex bunch of insulator method coaster;
Fig. 3 is that a kind of 330kV electric transmission line hot-line of the present invention changes strain insulator duplex bunch of insulator method coaster plan structure schematic diagram;
Fig. 4 is that a kind of light 330kV electric transmission line hot-line of the present invention changes strain insulator duplex bunch of insulator method charged for replacement 330kV tension double-string bunch of insulator arrangement schematic diagram;
Fig. 5 is that a kind of 330kV electric transmission line hot-line of the present invention changes strain insulator duplex bunch of insulator method charged for replacement 330kV tension double-string bunch of insulator layout partial enlargement 1 structural representation;
Fig. 6 is that a kind of 330kV electric transmission line hot-line of the present invention changes strain insulator duplex bunch of insulator method charged for replacement 330kV tension double-string bunch of insulator layout partial enlargement 2 structural representation;
Fig. 7 is that a kind of 330kV electric transmission line hot-line of the present invention changes strain insulator duplex bunch of insulator method charged for replacement 330kV tension double-string bunch of insulator layout partial enlargement 3 structural representation;
Fig. 8 is that a kind of 330kV electric transmission line hot-line of the present invention changes strain insulator duplex bunch of insulator method machete card structure schematic diagram;
Fig. 9 is that a kind of 330kV electric transmission line hot-line of the present invention changes strain insulator duplex bunch of insulator method insulation lifting rope and rope tower angle mounting structure schematic diagram is transmitted in insulation.
Wherein: 1, closed fixture; 2, connector is turned to; 3, epoxy resin board; 4, balancing pole; 5, lifting rope baffle plate; 7, pulley yoke; 8, pulley; 9, U-shaped coaster draw-in groove; 10, coaster fastening bolt; 11, bearing; 12, pin; 13, pulley spindle; 14, pin jump ring; 15, pulley groove; 16, bent plate card; 17, insulate lifting rope; 18, large connecting plate; 19, adjustable plate; 20, parallel link plate; 21, strain clamp; 22, U-shaped ring; 23, wire clamp; 24, wire; 25, insulation pulling plate; 26, machete card; 27, leading screw is very heavy; 28, rear connecting plate; 30, rope is transmitted in insulation; 31, leading screw; 32, cross arm of tower; 33, strand mill; 34, insulation lifting lower sheave; 35, lower sheave is transmitted in insulation; 37, insulation lifting top sheave; 38, top sheave is transmitted in insulation; 39, right angle link plate.
Embodiment
Change strain insulator duplex bunch of insulator method and technology scheme below in conjunction with drawings and Examples to a kind of 330kV electric transmission line hot-line of this present invention to be further described.
As shown in Fig. 1-Fig. 9, a kind of 330kV electric transmission line hot-line changes strain insulator duplex bunch of insulator method, it is characterized in that described method comprises the steps:
1) dismounting need change insulator step
1. on tower, electrician, equipotential electrician cooperatively interact at 330kV strain insulator twin insulator strings both sides installation machete card 26, bent plate card 16, insulation pulling plate 25 and corner block 7;
2. ground electrician by closed fixture 1, turn to connector 2, insulation pulling plate 3, balancing pull rod 4 Connecting groups synthesize bottle-holding rack pass to equipotential electrician;
3. bottle-holding rack is arranged on side of wire the 3rd insulator steel cap by equipotential electrician, buckle well blocking bolt 36, tie up in the middle of bottle-holding rack lifting rope baffle plate 5 after being placed into pulley 8 groove of corner block 7 after insulation lifting rope being first each passed through insulation lifting rope lower block 34, insulation lifting rope upper pulley 38 again, take out conductor wire end first insulator locking pin;
4. on tower, electrician tightens up the leading screw very heavy 27 of machete card 26, loosens insulator string, and does mechanical shock inspection to insulation pulling plate 25, machete card 26, bent plate card 16;
5. ground electrician tighten up insulation lifting rope 17 make insulator string conductor wire end in depart from stress, equipotential electrician and ground electrician cooperatively interact and throw off the connection of side of wire first insulator and twin sockets 6;
6. ground electrician loosens insulation lifting rope 17, and side of wire insulator string is relaxed to the state of naturally drooping together in company with bottle-holding rack;
on tower, insulation is transmitted after rope 30 is each passed through insulation transmission rope lower slide car 35, insulation transmission rope upper pulley 38 and is tied up on cross-arm side the 3rd or second insulator steel cap by electrician;
8. ground electrician tighten up insulation transmit rope 30 make insulator be disengaging stress, on tower, electrician throws off the connection of cross-arm side first insulator and right angle link plate 39;
9. ground electrician slowly loosen insulation transmit rope 30 old matter insulator string is passed to ground, remove bottle-holding rack;
2) new insulator step is installed
1. ground electrician more renews insulator, by closed fixture 1, connector 2, insulation pulling plate 3, balancing pull rod 4 Connecting groups synthesis bottle-holding rack is turned to be arranged on side of wire the 3rd insulator steel cap, buckle well blocking bolt 36, insulation lifting rope 17 is tied up in the middle of bottle-holding rack baffle plate 5, then insulation transmission rope 30 is tied up on cross-arm side the 3rd insulator;
2. ground, ground work is tightened up insulation and is transmitted rope 30, and insulator string is passed to cross arm of tower 32 place together in company with bottle-holding rack;
3. on tower, electrician and ground, ground work cooperatively interact and recover the connection of cross-arm side first insulator and right angle link plate 39;
4. ground electrician slowly tightens up insulation lifting rope 17, and lifting lead wire side insulator is to recovering front state, and equipotential electrician and ground electrician cooperatively interact and recover the connection of side of wire first insulator and twin sockets 6;
5. on tower, electrician loosens the leading screw very heavy 27 of machete card 26, insulator string is slowly made to recover stress, equipotential electrician on inspection each parts connects normally, coordinates and machete card 26, insulation pulling plate 25, bent plate card 16, bottle-holding rack is removed, be passed to ground successively with equipotential electrician;
6. equipotential electrician carries insulation lifting rope 17 and is back to cross-arm and lower tower to enter the contrary method of electric field;
7. on tower on electrician's inspection bar tower, wire without after legacy, carrying insulation and transmitting rope 30 times towers to ground.
Embodiment 1.
As shown in Fig. 1-Fig. 9, a kind of 330kV electric transmission line hot-line changes strain insulator duplex bunch of insulator method, and described method comprises the steps:
1) dismounting need change insulator step
1. on tower, electrician, equipotential electrician cooperatively interact at 330kV strain insulator twin insulator strings both sides installation machete card 26, bent plate card 16, insulation pulling plate 25 and corner block 7; Wherein machete card 26 is arranged on cross-arm 32 by bolt, and bent plate card 16 is arranged on large connecting plate 18 by bolt, and insulation pulling plate 25 two ends are installed on machete card 26 and bent plate card 16 by bolt respectively;
The installation of corner block 7 is as follows: adjustable plate 19 is arranged on large connecting plate 18 by parallel link plate 20 and bolt, adjustable plate 19 scallop has five installing holes, when U-shaped ring 22 is arranged on the interstitial hole of adjustable plate 19, corner block 7 can be arranged on right side in the left side of adjustable plate 19 on bent plate card 16, when U-shaped ring 22 is arranged on the left hole of adjustable plate 19, adjustable plate 19 is partial to right side, corner block 7 to be arranged on bent plate card 16 on the left of adjustable plate 19, when U-shaped ring 22 is arranged on the hole, the right of adjustable plate 19, adjustable plate 19 is partial to left side, corner block 7 is arranged on the right side of adjustable plate 19 on bent plate card 16.
2. ground electrician by closed fixture 1, turn to connector 2, insulation pulling plate 3, balancing pull rod 4 Connecting groups synthesize bottle-holding rack pass to equipotential electrician;
3. bottle-holding rack is arranged on side of wire the 3rd insulator steel cap by equipotential electrician, buckle well blocking bolt 36, again insulation lifting rope be first each passed through insulation lifting rope lower block 34 or tie up in the middle of bottle-holding rack lifting rope baffle plate 5 after being placed into pulley 8 groove of corner block 7 after twisting mill 33, insulation lifting rope upper pulley 38, taking out conductor wire end first insulator locking pin;
4. very heavy 27 insulation pulling plates 25 of leading screw that on tower, electrician tightens up machete card 26 are tightened up, and insulator string loosens thereupon, and does mechanical shock inspection to insulation pulling plate 25, machete card 26, bent plate card 16;
5. ground electrician tighten up insulation lifting rope 17 make insulator string conductor wire end in depart from stress, equipotential electrician and ground electrician cooperatively interact and throw off the connection of side of wire first insulator and twin sockets 6;
6. ground electrician loosens insulation lifting rope 17, and side of wire insulator string is relaxed to the state of naturally drooping together in company with bottle-holding rack;
on tower, insulation is transmitted after rope 30 is each passed through insulation transmission rope lower slide car 35, insulation transmission rope upper pulley 38 and is tied up on cross-arm side the 3rd or second insulator steel cap by electrician;
8. ground electrician tighten up insulation transmit rope 30 make insulator be disengaging stress, on tower, electrician throws off the connection of cross-arm side first insulator and right angle link plate 39;
9. ground electrician slowly loosens insulation and transmits rope 30 and old matter insulator string is passed to ground by insulation lifting rope 17, removes bottle-holding rack;
2) new insulator step is installed
1. ground electrician more renews insulator, by closed fixture 1, connector 2, insulation pulling plate 3, balancing pull rod 4 Connecting groups synthesis bottle-holding rack is turned to be arranged on side of wire the 3rd insulator steel cap, buckle well blocking bolt 36, insulation lifting rope 17 is tied up in the middle of bottle-holding rack baffle plate 5, then insulation transmission rope 30 is tied up on cross-arm side the 3rd insulator;
2. ground, ground work is tightened up insulation and is transmitted rope 30, and insulator string is passed to cross arm of tower 32 place together in company with bottle-holding rack;
3. on tower, electrician and ground, ground work cooperatively interact and recover the connection of cross-arm side first insulator and right angle link plate 39;
4. ground electrician slowly tightens up insulation lifting rope 17, and lifting lead wire side insulator is to recovering front state, and equipotential electrician and ground electrician cooperatively interact and recover the connection of side of wire first insulator and twin sockets 6;
5. the leading screw very heavy 27 that on tower, electrician loosens machete card 26 makes insulation pulling plate 25 relax, insulator string is slowly made to recover stress, equipotential electrician on inspection each parts connects normally, coordinate with equipotential electrician and machete card 26, insulation pulling plate 25, bent plate card 16, bottle-holding rack are removed, be passed to ground successively;
6. equipotential electrician carries insulation lifting rope 17 and is back to cross-arm and lower tower to enter the contrary method of electric field;
7. on tower on electrician's inspection bar tower, wire without after legacy, carrying insulation and transmitting rope 30 times towers to ground.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (1)

1. 330kV electric transmission line hot-line changes a strain insulator duplex bunch of insulator method, it is characterized in that described method comprises the steps:
1) dismounting need change insulator step
1. on tower, electrician, equipotential electrician cooperatively interact at 330kV strain insulator twin insulator strings both sides installation machete card (26), bent plate card (16), insulation pulling plate (25) and corner block (7);
2. ground electrician by closed fixture (1), turn to connector (2), insulation pulling plate (3), balancing pull rod (4) Connecting groups synthesize bottle-holding rack pass to equipotential electrician;
3. bottle-holding rack is arranged on side of wire the 3rd insulator steel cap by equipotential electrician, buckle well blocking bolt (36), tie up in the middle of bottle-holding rack lifting rope baffle plate (5) after being placed into pulley (8) groove of corner block (7) after again insulation lifting rope being first each passed through insulation lifting rope lower block (34), insulation lifting rope upper pulley (38), take out conductor wire end first insulator locking pin;
4. on tower, electrician tightens up the leading screw very heavy (27) of machete card (26), loosens insulator string, and does mechanical shock inspection to insulation pulling plate (25), machete card (26), bent plate card (16);
5. ground electrician tighten up insulation lifting rope (17) make insulator string conductor wire end in depart from stress, equipotential electrician and ground electrician cooperatively interact and throw off the connection of side of wire first insulator and twin sockets (6);
6. ground electrician loosens insulation lifting rope (17), and side of wire insulator string is relaxed to the state of naturally drooping together in company with bottle-holding rack;
on tower, insulation transmission rope (30) is each passed through after rope lower slide car (35), insulation transmission rope upper pulley (38) are transmitted in insulation and ties up on cross-arm side the 3rd or second insulator steel cap by electrician;
8. ground electrician tighten up insulation transmit rope (30) make insulator be disengaging stress, on tower, electrician throws off the connection of cross-arm side first insulator and right angle link plate (39);
9. ground electrician slowly loosen insulation transmit rope (30) old matter insulator string is passed to ground, remove bottle-holding rack;
2) new insulator step is installed
1. ground electrician more renews insulator, by closed fixture (1), connector (2), insulation pulling plate (3), balancing pull rod (4) Connecting groups synthesis bottle-holding rack is turned to be arranged on side of wire the 3rd insulator steel cap, buckle well blocking bolt (36), the lifting rope (17) that will insulate ties up in the middle of bottle-holding rack baffle plate (5), then ties up on cross-arm side the 3rd insulator by insulation transmission rope (30);
2. ground, ground work is tightened up insulation and is transmitted rope (30), and insulator string is passed to cross arm of tower (32) place together in company with bottle-holding rack;
3. on tower, electrician and ground, ground work cooperatively interact and recover the connection of cross-arm side first insulator and right angle link plate (39);
4. ground electrician slowly tightens up insulation lifting rope (17), and lifting lead wire side insulator is to recovering front state, and equipotential electrician and ground electrician cooperatively interact and recover the connection of side of wire first insulator and twin sockets (6);
5. on tower, electrician loosens the leading screw very heavy (27) of machete card (26), insulator string is slowly made to recover stress, equipotential electrician on inspection each parts connects normally, coordinate with equipotential electrician and machete card (26), insulation pulling plate (25), bent plate card (16), bottle-holding rack are removed, be passed to ground successively;
6. equipotential electrician carries insulation lifting rope (17) and is back to cross-arm and lower tower to enter the contrary method of electric field;
7. on tower on electrician's inspection bar tower, wire without after legacy, carrying insulation transmit rope (30) under tower to ground.
CN201510183472.XA 2015-04-19 2015-04-19 Method for live replacement of tension duplex whole-string insulators of 330kV power transmission line Active CN104752996B (en)

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中华人民共和国国家经济贸易委员会: "带电更换330kV线路耐张单片绝缘子技术规程", 《中华人民共和国电力行业标准》 *
孙兵等: "中间电位法带电更换220 kV线路耐张零值绝缘子", 《华北电力技术》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106373467A (en) * 2016-10-18 2017-02-01 国网福建省电力有限公司 Power transmission and transformation live line work training simulation platform training method
CN106409085A (en) * 2016-10-18 2017-02-15 国网福建省电力有限公司 Power transmission and transformation live working practical-training simulation stand
CN108069353A (en) * 2016-11-16 2018-05-25 刘伟华 The special resistance thick stick of electric system field work
CN112249950A (en) * 2020-11-05 2021-01-22 国网湖南省电力有限公司 Hanging bracket and method for live replacement of any insulator of extra-high voltage strain insulator string

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