CN104752996B - 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
CN104752996B
CN104752996B CN201510183472.XA CN201510183472A CN104752996B CN 104752996 B CN104752996 B CN 104752996B CN 201510183472 A CN201510183472 A CN 201510183472A CN 104752996 B CN104752996 B CN 104752996B
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insulator
electrician
insulation
ground
tower
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CN104752996A (en
Inventor
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-lines change strain insulator duplex bunch of insulator method
Technical field
The present invention relates to technical field of electric power transmission, concretely relates to a kind of 330kV electric transmission line hot-lines and changes strain insulator pair Connection bunch of insulator method.
Background technology
One of power supply enterprise's production and operation target is exactly the power off time for reducing power equipment, improves power supply reliability and Jing Ji benefit.Power supply enterprise adopts livewire work abatement apparatus defect, and it is realize productive target important to reduce the line outage time One of means, charged for replacement 330kV power line tension insulator strings are a routine and important livewire work project, operation When need to support the use ability using machete card, bent plate card, insulation pulling plate, bottle-holding rack, insulation coaster, the multiple types of tools such as insulation ropes Complete.Jing is counted, and 330kV transmission circuit insulator string majorities are that, using double string compound modes, the piece number configuration of insulator chain is Raise with height above sea level and increase, typically at 21 to 24, as the bottle-holding rack length in conventional tool does not possess adjustable Property, the insulator chain of each length need to be equipped with the bottle-holding rack of corresponding length, and so, each production unit just needs to be equipped with many sets Different length bottle supporting instrument, and traditional Work tool weight is big, structure is long, installs, transport and for inconvenience;In addition, working as power transmission line When line conductor tension force is less, insulator chain can be formed and be bent compared with the Nature stretched wire, and bottle-holding rack structure is all water in conventional tool Flat design, it is impossible to use.Analysis above traditional method is primarily present the deficiency of following several respects:
1st, do not possess versatility.The insulation subcategory that transmission line of electricity is used is more, mainly has plain edition insulator, anti-fouling type exhausted Edge, three umbrella insulators, composite insulator etc., each insulator structure is different, size is also different, and its connecting length is not yet Equally, traditional Work tool does not possess versatility feature, not only injects capital into big, and manage, transport, using very not side Just.
2nd, the larger insulator chain of flexibility cannot be changed.Traditional bottle supporting instrument is with pipe typed insulation material and metal material Be linked and packed and form, bottle supporting instrument critical component adopts horizontal design, it is impossible to change the wire tensions such as similar terminal tower compared with The little, insulator that insulator chain flexibility is big.
3rd, weight is big.It is located in high mountain high hill because transmission line of electricity is most, many shaft tower vehicles cannot be travelled in place, traditional work Tool weight makes Work tool transport extremely inconvenience typically at 40 kilograms or so, and work high above the ground is also difficult.
For problem above, on the basis of a set of lightweight, universal bottle-holding rack and coaster is developed, with machete card, bent plate Card and insulation pulling plate are used cooperatively, and work out replacing 330kV anchor support strain insulator-string duplex bunch of insulator overall procedures.
The content of the invention
The technical problem to be solved in the present invention is in view of the shortcomings of the prior art, there is provided a kind of 330kV transmission lines of electricity Live-line replacing strain duplex bunch of insulator method and for the light of charged for replacement 330kV anchor support duplex bunch of insulator Type, universal bottle-holding rack and coaster.
A kind of 330kV electric transmission line hot-lines of the present invention are changed strain insulator duplex bunch of insulator method and pass through following technical proposals It is achieved:A kind of 330kV electric transmission line hot-lines are changed strain insulator duplex bunch of insulator method and are comprised the steps:
1)Dismounting need to change insulation sub-step
1. electrician on tower, isoelectric level electrician to cooperate and install machete card, curved in 330kV strain insulator twin insulator strings both sides Board, insulation pulling plate and corner block;
2. closed fixture, steering adapter, insulation pulling plate, balancing pull rod connection are combined into bottle-holding rack and are passed to by ground electrician Isoelectric level electrician;
3. isoelectric level electrician is arranged on bottle-holding rack on the 3rd insulator steel cap of side of wire, buckles well blocking bolt, then will Insulation lifting rope is placed into the pulley groove of corner block after being first each passed through insulation lifting rope lower block, insulation lifting rope upper pulley After tie up in the middle of bottle-holding rack lifting rope baffle plate, take out conductor wire end first insulator locking pin;
4. on tower electrician tighten up machete card leading screw it is very heavy, loosen insulator chain, and to insulation pulling plate, machete card, bent plate Card does mechanical shock inspection;
5. ground electrician tightens up insulation lifting rope and makes insulator chain conductor wire end in disengaging stress, isoelectric level electrician and ground Face electrician cooperates and disengages side of wire first insulator with the connection of twin sockets;
6. ground electrician loosens insulation lifting rope, side of wire insulator chain is relaxed to together in company with bottle-holding rack and is naturally drooped State;
7. on tower electrician will insulate transmission rope be each passed through insulation transmission rope lower slide car, insulation transmission rope upper pulley after tie up to Cross-arm side the 3rd, or second insulator steel cap on;
8. ground electrician tightens up insulation transmission rope makes insulator in stress is departed from, and on tower, electrician disengages cross-arm side first The connection of piece insulator and right angle link plate;
9. ground electrician slowly loosens insulation transmission rope old matter insulator chain is transferred to ground, removes bottle-holding rack;
2)New insulation sub-step is installed
1. ground electrician more renews insulator, by closed fixture, turns to adapter, insulation pulling plate, balancing pull rod connection combination Into bottle-holding rack be arranged on the 3rd insulator steel cap of side of wire on, buckle well blocking bolt, will insulation lifting rope tie up to bottle-holding rack In the middle of baffle plate, then insulation transmission rope is tied up on the 3rd insulator of cross-arm side;
2. ground work in ground tightens up insulation transmission rope, and insulator chain is transferred at cross arm of tower together in company with bottle-holding rack;
3. on tower, electrician and ground ground work cooperate and recover cross-arm side first insulator with the connection of right angle link plate;
4. ground electrician slowly tightens up insulation lifting rope, lifting lead wire side insulator state, isoelectric level electrician to before recovering Cooperate with ground electrician and recover side of wire first insulator with the connection of twin sockets;
5. on tower electrician loosen machete card leading screw it is very heavy, slowly make insulator chain recover stress, isoelectric level electrician After each part connection is normal on inspection, coordinates with isoelectric level electrician and machete card, insulation pulling plate, bent plate card, bottle-holding rack are removed, according to It is secondary to be transferred to ground;
6. isoelectric level electrician carries insulation lifting rope to be back to cross-arm lower tower into the contrary method of electric field;
7. on tower electrician check shaft tower, on wire without legacy after, carry the lower tower of insulation transmission rope to ground.
A kind of 330kV electric transmission line hot-lines of the present invention change strain insulator duplex bunch of insulator method compared with prior art Have the advantages that:A kind of 330kV electric transmission line hot-lines of the present invention change strain insulator duplex bunch of insulator method for powered It is rectangular frame type to change the lightweight of 330kV anchor support strain insulator-string duplex bunch of insulator, universal bottle supporting instrument, is made Used time bottle supporting instrument is arranged on the 3rd insulator steel cap of insulator chain side of wire, and bottle supporting instrument of the present invention has weight Gently, simple structure, convenient transportation, it is easy, easy to operate to install;The installation span of bottle supporting instrument is little, only three insulators Length;Do not affected by insulator chain flexibility;Suitable for various numbers(Length)With various model porcelain insulators, glass insulation Son;Line outage or it is powered in the case of can use.Two steps can be divided during operation to complete:The first step, installs new bottle supporting instrument And wheeled vehicle, by insulation lifting rope tail end through after the pulley of insulation lifting top sheave and wheeled vehicle on steel tower cross-arm Tightly tie up on the lifting rope baffle plate of the bottle-holding rack gimbal lever, under insulation lifting rope head end is lifted by crane through the insulation for being fixed on steel tower root Pulley is controlled by surface personnel and tightens up or loosen.When ground electrician tightens up insulation lifting rope, isoelectric level electrician can be de- Convince the connection of line side twin sockets and insulator by patient analysis, then ground electrician slowly loosens insulation lifting rope, side of wire insulator chain Side slowly can drop down onto the state of naturally drooping down.Another eradication edge transmission rope is each passed through column foot insulation transmission and is glided by second step Tie up on the 3rd insulator of cross-arm side after insulation transmission top sheave on wheel and cross-arm, when ground electrician tightens up insulation transmission rope When, on tower, electrician is the connection of disengagable cross-arm side right angle link plate and insulator, and then ground electrician slowly loosens insulation transmission Rope, you can bunch of insulator is put to ground.The insulator chain operational approach for recovering new is contrary with dismantling operation method.The present invention Powered in power generation and method when changing 330kV tension double-string bunch of insulator of having a power failure single present situation, and energy will be changed During the powered or interruption maintenance 330kV tension double-string bunch of insulator of solution, bottle supporting instrument weight used is excessive, the scope of application is limited, The problems such as transportation and storage is difficult, can reach the intensity for mitigating staff, improve work efficiency, the purpose of reduces cost.
A kind of 330kV electric transmission line hot-lines replacing strain insulator duplex bunch of insulator method use range of the present invention is wide, operation Simplicity, the method that can substitute traditional replacing 330kV strain insulator duplex bunch of insulator completely, meets livewire work and interruption maintenance Use requirement, cracked in puzzlement system for a long time 330 KVs and changed that strain insulator-chain electrical insulator means are single, work device A series of difficult problems such as tool heaviness, operating cost height.
A kind of 330kV electric transmission line hot-lines of the present invention newly have developed a kind of light in changing strain insulator duplex bunch of insulator method Just type, universal bottle supporting instrument and dedicated pulley.The bottle supporting instrument newly developed and dedicated pulley have simple structure, size Little, lightweight feature, is not limited by sub-pieces number, size, weight in use, is readily transported, humidity resistance Well, it is easy to keeping, it is without the need for preventative and inspectability electrical test advantage, safe and reliable, production cost can be reduced, is improved Operation and overhaul efficiency.
Description of the drawings
A kind of 330kV electric transmission line hot-lines of the present invention change strain insulator duplex bunch of insulator method drawings described below:
Fig. 1 is that a kind of 330kV electric transmission line hot-lines of the invention change strain insulator duplex bunch of insulator method bottle-holding rack structure Schematic diagram;
Fig. 2 is that a kind of 330kV electric transmission line hot-lines of the invention change strain insulator duplex bunch of insulator method coaster main view knot Structure schematic diagram;
Fig. 3 is that a kind of 330kV electric transmission line hot-lines of the invention change strain insulator duplex bunch of insulator method coaster vertical view knot Structure schematic diagram;
Fig. 4 is that a kind of light 330kV electric transmission line hot-lines of the present invention change strain insulator duplex bunch of insulator method charged for replacement 330kV tension double-string bunch of insulator arrangement schematic diagrams;
Fig. 5 is that a kind of 330kV electric transmission line hot-lines of the invention change strain insulator duplex bunch of insulator method charged for replacement 330kV tension double-strings bunch of insulator arranges 1 structural representation of partial enlargement;
Fig. 6 is that a kind of 330kV electric transmission line hot-lines of the invention change strain insulator duplex bunch of insulator method charged for replacement 330kV tension double-strings bunch of insulator arranges 2 structural representation of partial enlargement;
Fig. 7 is that a kind of 330kV electric transmission line hot-lines of the invention change strain insulator duplex bunch of insulator method charged for replacement 330kV tension double-strings bunch of insulator arranges 3 structural representation of partial enlargement;
Fig. 8 is that a kind of 330kV electric transmission line hot-lines of the invention change strain insulator duplex bunch of insulator method machete card structure Schematic diagram;
Fig. 9 is that a kind of 330kV electric transmission line hot-lines of the invention change strain insulator duplex bunch of insulator method insulation lifting rope With insulation transmission rope tower angle mounting structure schematic diagram.
Wherein:1st, closed fixture;2nd, turn to adapter;3rd, epoxy resin board;4th, the gimbal lever;5th, lifting rope baffle plate;7th, pulley Frame;8th, pulley;9th, U-shaped coaster draw-in groove;10th, coaster fastening bolt;11st, bearing;12nd, pin;13rd, pulley spindle;14th, pin card Spring;15th, pulley groove;16th, bent plate card;17th, insulate lifting rope;18th, big connecting plate;19th, adjustable plate;20th, parallel link plate;21st, strain insulator Wire clamp;22nd, U-shaped ring;23rd, wire clamp;24th, wire;25th, insulation pulling plate;26th, machete card;27th, leading screw is very heavy;28th, rear connecting plate; 30th, insulation transmission rope;31st, leading screw;32nd, cross arm of tower;33rd, twist mill;34th, insulation lifting lower sheave;35th, insulation transmission is glided Wheel;37th, insulation lifting top sheave;38th, insulation transmission top sheave;39th, right angle link plate.
Specific embodiment
The whole string of strain insulator duplex is changed to a kind of this 330kV electric transmission line hot-line of the invention with reference to the accompanying drawings and examples exhausted Edge submethod technical scheme is further described.
As shown in Fig. 1-Fig. 9, a kind of 330kV electric transmission line hot-lines change strain insulator duplex bunch of insulator method, its feature It is that methods described comprises the steps:
1)Dismounting need to change insulation sub-step
1. electrician on tower, isoelectric level electrician cooperate 330kV strain insulator twin insulator strings both sides install machete card 26, Bent plate card 16, insulation pulling plate 25 and corner block 7;
2. closed fixture 1, steering adapter 2, insulation pulling plate 3, the connection of balancing pull rod 4 are combined into bottle-holding rack biography by ground electrician Pass isoelectric level electrician;
3. isoelectric level electrician is arranged on bottle-holding rack on the 3rd insulator steel cap of side of wire, buckles well blocking bolt 36, then Corner block 7 is placed into after insulation lifting rope is first each passed through insulation lifting rope lower block 34, insulation lifting rope upper pulley 38 8 groove of pulley after tie up in the middle of bottle-holding rack lifting rope baffle plate 5, 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 chain, and to insulation pulling plate 25, machete card 26th, bent plate card 16 does mechanical shock inspection;
5. ground electrician tighten up insulation lifting rope 17 make insulator chain conductor wire end in depart from stress, isoelectric level electrician with Ground electrician cooperates and disengages side of wire first insulator with the connection of twin sockets 6;
6. ground electrician loosens insulation lifting rope 17, and side of wire insulator chain is relaxed under nature together in company with bottle-holding rack Vertical state;
7. on tower, electrician will insulation transmission rope 30 be each passed through insulation transmission rope lower slide car 35, insulate transmission rope upper pulley 38 After tie up to cross-arm side the 3rd, or second insulator steel cap on;
8. ground electrician tightens up insulation transmission rope 30 makes insulator in stress is departed from, and on tower, electrician disengages cross-arm side the The connection of a piece of insulator and right angle link plate 39;
9. ground electrician slowly loosens insulation transmission rope 30 old matter insulator chain is transferred to ground, removes bottle-holding rack;
2)New insulation sub-step is installed
1. ground electrician more renews insulator, and closed fixture 1, steering adapter 2, insulation pulling plate 3, balancing pull rod 4 are connected Bottle-holding rack is combined on the 3rd insulator steel cap of side of wire, blocking bolt 36 is buckled well, insulation lifting rope 17 is tied up to In the middle of bottle-holding rack baffle plate 5, then insulation transmission rope 30 is tied up on the 3rd insulator of cross-arm side;
2. ground work in ground tightens up insulation transmission rope 30, and insulator chain is transferred to cross arm of tower 32 together in company with bottle-holding rack Place;
3. on tower, electrician and ground ground work cooperate and recover cross-arm side first insulator with the connection of right angle link plate 39;
4. ground electrician slowly tightens up insulation lifting rope 17, lifting lead wire side insulator state, isopotential electrical to before recovering Work is cooperated with ground electrician and recovers side of wire first insulator with the connection of twin sockets 6;
5. on tower, electrician loosens the leading screw very heavy 27 of machete card 26, slowly makes insulator chain recover stress, isoelectric level Electrician after each part connection normally, is coordinated machete card 26, insulation pulling plate 25, bent plate card 16, support with isoelectric level electrician on inspection Bottle stand is removed, and is transferred to ground successively;
6. isoelectric level electrician carries insulation lifting rope 17 to be back to cross-arm lower tower into the contrary method of electric field;
7. on tower electrician check shaft tower, on wire without legacy after, carry insulation transmission 30 times towers of rope to ground.
Embodiment 1.
As shown in Fig. 1-Fig. 9, a kind of 330kV electric transmission line hot-lines change strain insulator duplex bunch of insulator method, the side Method comprises the steps:
1)Dismounting need to change insulation sub-step
1. electrician on tower, isoelectric level electrician cooperate 330kV strain insulator twin insulator strings both sides install 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 leads to Bolt is crossed on big connecting plate 18,25 two ends of insulation pulling plate are respectively arranged on machete card 26 and bent plate card 16 by bolt;
The installation of corner block 7 is as follows:Adjustable plate 19 passes through parallel link plate 20 and bolt is arranged on big connecting plate 18, adjusts 19 scallop of plate has five installing holes, and when U-shaped ring 22 is arranged on the interstitial hole of adjustable plate 19, corner block 7 may be installed curved Right side in the left side of adjustable plate 19 on board 16, when U-shaped ring 22 is arranged on the left hole of adjustable plate 19,19 inclined right of adjustable plate Side, corner block 7 are arranged on bent plate card 16 on the left of adjustable plate 19, when U-shaped ring 22 is arranged on the right hole of adjustable plate 19, are adjusted The section deflection of plate 19 left side, corner block 7 are then arranged on the right side of adjustable plate 19 on bent plate card 16.
2. closed fixture 1, steering adapter 2, insulation pulling plate 3, the connection of balancing pull rod 4 are combined into bottle-holding rack biography by ground electrician Pass isoelectric level electrician;
3. isoelectric level electrician is arranged on bottle-holding rack on the 3rd insulator steel cap of side of wire, buckles well blocking bolt 36, then It is placed into after insulation lifting rope is first each passed through insulation lifting rope lower block 34 or strand mill 33, insulation lifting rope upper pulley 38 and turns Tie up in the middle of bottle-holding rack lifting rope baffle plate 5 to after 8 groove of pulley of coaster 7, take out conductor wire end first insulator locking pin;
4. on tower, electrician tightens up very heavy 27 insulation pulling plate of leading screw 25 of machete card 26 and is tightened up, and insulator chain loosens therewith, And mechanical shock inspection is done to insulation pulling plate 25, machete card 26, bent plate card 16;
5. ground electrician tighten up insulation lifting rope 17 make insulator chain conductor wire end in depart from stress, isoelectric level electrician with Ground electrician cooperates and disengages side of wire first insulator with the connection of twin sockets 6;
6. ground electrician loosens insulation lifting rope 17, and side of wire insulator chain is relaxed under nature together in company with bottle-holding rack Vertical state;
7. on tower, electrician will insulation transmission rope 30 be each passed through insulation transmission rope lower slide car 35, insulate transmission rope upper pulley 38 After tie up to cross-arm side the 3rd, or second insulator steel cap on;
8. ground electrician tightens up insulation transmission rope 30 makes insulator in stress is departed from, and on tower, electrician disengages cross-arm side the The connection of a piece of insulator and right angle link plate 39;
9. ground electrician slowly loosens insulation transmission rope 30 and old matter insulator chain is transferred to ground by insulation lifting rope 17, Remove bottle-holding rack;
2)New insulation sub-step is installed
1. ground electrician more renews insulator, and closed fixture 1, steering adapter 2, insulation pulling plate 3, balancing pull rod 4 are connected Bottle-holding rack is combined on the 3rd insulator steel cap of side of wire, blocking bolt 36 is buckled well, insulation lifting rope 17 is tied up to In the middle of bottle-holding rack baffle plate 5, then insulation transmission rope 30 is tied up on the 3rd insulator of cross-arm side;
2. ground work in ground tightens up insulation transmission rope 30, and insulator chain is transferred to cross arm of tower 32 together in company with bottle-holding rack Place;
3. on tower, electrician and ground ground work cooperate and recover cross-arm side first insulator with the connection of right angle link plate 39;
4. ground electrician slowly tightens up insulation lifting rope 17, lifting lead wire side insulator state, isopotential electrical to before recovering Work is cooperated with ground electrician and recovers side of wire first insulator with the connection of twin sockets 6;
5. on tower electrician loosen machete card 26 leading screw very heavy 27 make insulation pulling plate 25 relax, slowly recover insulator chain Stress, isoelectric level electrician after each part connection normally, are coordinated machete card 26, insulation pulling plate with isoelectric level electrician on inspection 25th, bent plate card 16, bottle-holding rack is removed, and is transferred to ground successively;
6. isoelectric level electrician carries insulation lifting rope 17 to be back to cross-arm lower tower into the contrary method of electric field;
7. on tower electrician check shaft tower, on wire without legacy after, carry insulation transmission 30 times towers of rope to ground.
The preferred embodiments of the present invention are the foregoing is only, the present invention is not limited to, for the skill of this area For art personnel, the present invention can have various modifications and variations.It is all within the spirit and principles in the present invention, made any repair Change, equivalent, improvement etc., should be included within the scope of the present invention.

Claims (1)

1. a kind of 330kV electric transmission line hot-lines change strain insulator duplex bunch of insulator method, it is characterised in that methods described includes
Following steps:
1)Dismounting need to change insulation sub-step
1. on tower, electrician, isoelectric level electrician to cooperate and install machete card in 330kV strain insulator twin insulator strings both sides(26)、
Bent plate card(16), insulation pulling plate(25)And corner block(7);
2. ground electrician is by closed fixture(1), turn to adapter(2), insulation pulling plate( 25), balancing pull rod(4)Connection is combined into support Bottle stand passes to isoelectric level electrician;
3. isoelectric level electrician is arranged on bottle-holding rack on the 3rd insulator steel cap of side of wire, buckles well blocking bolt(36), then will Insulation lifting rope is first each passed through insulation lifting rope lower block(34), insulation lifting rope upper pulley(38)After be put into corner block (7)Pulley(8)Groove ties up to bottle-holding rack lifting rope baffle plate(5)Centre, takes out conductor wire end first insulator locking pin;
4. on tower, electrician tightens up machete card(26)Leading screw it is very heavy(27), loosen insulator chain, and to insulation pulling plate(25), it is big
Knife card(26), bent plate card(16)Do mechanical shock inspection;
5. ground electrician tightens up insulation lifting rope(17)Insulator chain conductor wire end is made in disengaging stress, isoelectric level electrician and ground
Face electrician cooperates and disengages side of wire first insulator and twin sockets(6)Connection;
6. ground electrician loosens insulation lifting rope(17), side of wire insulator chain is relaxed to together in company with bottle-holding rack and is naturally drooped
State;
7. on tower, electrician will insulation transmission rope(30)It is each passed through insulation transmission rope lower slide car(35), insulation transmission rope upper pulley
(38)After tie up to cross-arm side the 3rd, or second insulator steel cap on;
8. ground electrician tightens up insulation transmission rope(30)Make insulator in stress is departed from, electrician disengages cross-arm side first on tower
Piece insulator and right angle link plate(39)Connection;
9. ground electrician slowly loosens insulation transmission rope(30)Old matter insulator chain is transferred to into ground, bottle-holding rack is removed;
2)New insulation sub-step is installed
1. ground electrician more renews insulator, by closed fixture(1), turn to adapter(2), insulation pulling plate(25), balancing pull rod(4)
Connection is combined into bottle-holding rack on the 3rd insulator steel cap of side of wire, buckles well blocking bolt(36), will insulate Lifting rope
(17)Tie up to bottle-holding rack baffle plate(5)Centre, then insulation transmission is restricted(30)Tie up on the 3rd insulator of cross-arm side;
2. ground work in ground tightens up insulation transmission rope(30), insulator chain is transferred to into cross arm of tower together in company with bottle-holding rack(32)
Place;
3. on tower, electrician and ground ground work cooperate and recover cross-arm side first insulator and right angle link plate(39)Connection;
4. ground electrician slowly tightens up insulation lifting rope(17), lifting lead wire side insulator state, isoelectric level electrician to before recovering
Cooperate with ground electrician and recover side of wire first insulator and twin sockets(6)Connection;
5. on tower, electrician loosens machete card(26)Leading screw it is very heavy(27), slowly make insulator chain recover stress, isoelectric level
Electrician after each part connection normally, is coordinated machete card with isoelectric level electrician on inspection(26), insulation pulling plate(25), bent plate Card(16), bottle-holding rack remove, be transferred to ground successively;
6. isoelectric level electrician carries insulation lifting rope(17)To be back to cross-arm lower tower into the contrary method of electric field;
7. on tower electrician check shaft tower, on wire without legacy after, carry insulation transmission rope(30)Lower tower is 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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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
CN108069353B (en) * 2016-11-16 2020-04-17 国网山东省电力公司潍坊供电公司 Special resistance bar for field operation of electric power system
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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JP4071734B2 (en) * 2004-03-31 2008-04-02 株式会社関電工 Replacement method for 2-conductor transmission lines
CN100464474C (en) * 2007-03-23 2009-02-25 上海市电力公司超高压输变电公司 Live line replacing method high voltage transmission line strain insulator-string and device
CN101174761B (en) * 2007-10-30 2010-06-23 重庆市电力公司超高压局 High-voltage power line tension insulator string forward spin live-wire altering method
CN203491598U (en) * 2013-09-10 2014-03-19 国家电网公司 Upturned pulley for replacing tension insulator

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