CN102931609B - On-load changes the operational method of 10kV fuse switch - Google Patents

On-load changes the operational method of 10kV fuse switch Download PDF

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Publication number
CN102931609B
CN102931609B CN201210324115.7A CN201210324115A CN102931609B CN 102931609 B CN102931609 B CN 102931609B CN 201210324115 A CN201210324115 A CN 201210324115A CN 102931609 B CN102931609 B CN 102931609B
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fuse switch
wire
insulation
bucket
lead
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CN201210324115.7A
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CN102931609A (en
Inventor
王家峰
高振江
张绍强
李东伦
单忠闯
蒋祖利
张绍锋
许国虎
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ANSHAN POWER SUPPLY COMPANY LIAONING ELECTRIC POWER Co Ltd
State Grid Corp of China SGCC
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ANSHAN POWER SUPPLY COMPANY LIAONING ELECTRIC POWER Co Ltd
State Grid Corp of China SGCC
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Abstract

The present invention relates to electrical network distribution line fuse switch field, particularly relate to the operational method that a kind of on-load changes 10kV fuse switch, it is characterized in that, insulation lead wire bypass fuse switch is adopted to shunt at fuse switch two ends to be replaced direct connection, when ensureing to power to based model for load duration, realizing on-load and changing 10kV fuse switch.Compared with prior art, the invention has the beneficial effects as follows: 1) can power to equipment lower end based model for load duration between operational period, utilizing during live line working method hot line maintenance to avoid equipment to throw, throw the time again, shortens work flow, does not affect user power utilization between operational period.2) 10kV primary equipment failure rate can be greatly reduced, accomplish effectively to improve power supply quality.3) adopt insulation lead wire on-load to change fuse switch, operated by double pair of aerial lift device with insulated arm, the operating time is short, uses instrument few, can effective saving resource, and improves power supply reliability.<!--1-->

Description

On-load changes the operational method of 10kV fuse switch
Technical field
The present invention relates to electrical network distribution line fuse switch field, particularly relate to the operational method that a kind of on-load changes 10kV fuse switch.
Background technology
The method that replacing fuse switch adopted in the past mainly contains two kinds: one is end load under inactive fuse switch, then adopts the method that charged breaking and connecting go between, and after cutting off fuse switch upper end power supply, changes; Another kind directly cuts off fuse switch upper end power supply, carries out power failure and change.Although two kinds of above methods can carry out the replacing of fuse switch, but still need inactive a part of power load; Break down to from fuse switch and restore electricity, during this, still can cause certain social influence and economic loss.
Current fuse switch was not also carried out employing insulation lead wire on-load and was changed, and its main cause is that phase spacing is near, affects safety factor many, requires high to operating personnel's technical merit; Along with increasing of fuse switch use in recent years, if on-load can be carried out change fuse switch, will the huge social value of creation and economic worth.
Summary of the invention
The object of the present invention is to provide a kind of on-load to change the operational method of 10kV fuse switch, adopt insulating gloves working system, when ensureing to power to based model for load duration by bypass fuse switch, realize on-load and change 10kV fuse switch.
For achieving the above object, the present invention is achieved through the following technical solutions:
On-load changes the operational method of 10kV fuse switch, insulation lead wire bypass fuse switch is adopted to shunt at fuse switch two ends to be replaced direct connection, when ensureing to power to based model for load duration, realize on-load and change 10kV fuse switch, its concrete operation step is as follows:
1) in two buckets, electrician operates aerial lift device with insulated arm respectively, enters live line working region;
2) bucket that insulate arrives the proper operation position of the inner edge phase of fuse switch, outside phase and middle phase respectively, carry out insulation masked isolation according to the order of " from the close-by examples to those far off ", " from top to bottom ", " first big after small " to the position may touched in operation, the position of covering and order are followed successively by the earth electrode that fuse switch lead-in wire, fuse switch, wire and setting close on;
3) in bucket, electrician reviews and validate after fuse switch is in closing position, and in two buckets, electricians cooperatively interact installing insulating support and bypass fuse switch;
4) in two buckets, electrician coordinates installing insulating drainage thread, by two end terminals of insulation lead wire with fall prevention rope buckle on wire, untie the insulation masked isolation measure on wire, remove wire oxide layer, installing insulating drainage thread, and then the measure of insulation masked isolation is reset to drainage thread wire clamp place;
5) in bucket electrician with the electric current of current tester test insulation lead wire, confirm through-flow good after, pull open old fuse switch with insulating bar;
6) remove old fuse switch and both sides lead-in wire thereof, more renew fuse switch, and both sides lead-in wire is installed, and then recover to improve the insulation masked isolation measure on lead-in wire, the new earth potential such as fuse switch, cross-arm component;
7) in bucket, electrician tests the electric current on new fuse switch lead-in wire with current tester, determine through-flow good after, to close new fuse switch with insulating bar, remove bypass fuse switch, insulation lead wire and insulating support, during dismounting, two people answer homophase, synchronously carry out, and recover the insulation masked isolation measure on main traverse line in time;
8) according to above-mentioned steps 3)-step 7) changes the old fuse switch of outside phase, middle phase successively;
9) in bucket, electrician shifts insulation bucket and arrives the mesophase spherule of fuse switch both sides, outside phase, the mutually suitable service position of inner edge respectively, to insulate masked isolation measure according to the orderly release contrary with arranging masked isolation measure of insulating, the order of dismounting is followed successively by electrified body, earth electrode, fuse switch switch and the fuse switch lead-in wire that setting closes on;
10) in bucket, electrician withdraws from live line working region, and return to ground, work complete termination work ticket, and shift withdraws operation field.
Compared with prior art, the invention has the beneficial effects as follows:
1) the method on-load of insulation lead wire shunting is adopted to change 10kV fuse switch, can power to equipment lower end based model for load duration between operational period, utilizing during live line working method hot line maintenance to avoid equipment to throw, throw the time again, shorten work flow, between operational period, do not affect user power utilization.
2) 10kV primary equipment failure rate can be greatly reduced, accomplish effectively to improve power supply quality.
3) adopt insulation lead wire on-load to change fuse switch, operated by double pair of aerial lift device with insulated arm, the operating time is short, uses instrument few, can effective saving resource, and improves power supply reliability.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
On-load of the present invention changes the operational method of 10kV fuse switch, being adopt insulating gloves working system, when ensureing to power to based model for load duration, utilizing the charged bypass fuse switch of insulation lead wire, realize on-load and change 10kV fuse switch, its concrete operation step is as follows:
1) operate front neck insulating tool, safety appliance and auxiliary implement, use megohmmeter or insulation tester to carry out segmentation detection to insulating tool, insulation resistance value is not less than 700 megaohms; In two buckets, electrician is after work director license, operates aerial lift device with insulated arm respectively, enters live line working region; The movement of insulation bucket should steadily at the uniform velocity, should without large-amplitude sloshing phenomenon when entering live line working region, and insulation bucket declines, the speed that rises should more than 0.5m/s, and the maximum line velocity at insulation bucket edge should more than 0.5m/s;
2) bucket that insulate arrives the proper operation position of the inner edge phase of fuse switch, outside phase and middle phase respectively, carry out insulation masked isolation according to the order of " from the close-by examples to those far off ", " from top to bottom ", " first big after small " to the position may touched in operation, the position of covering and order are followed successively by the earth electrode that fuse switch lead-in wire, fuse switch, wire and setting close on; When insulation masked isolation measure is set, action should be light and slow, and enough safe distances (being not less than 0.4m) should be had between the earth potential components such as cross-arm, enough safe distances (being not less than 0.6m) should be had with between neighbour's phase, the measure of insulation masked isolation should tightly, firmly, and the overlap distance that combination is covered in insulation must not be less than 15cm;
3) in bucket, electrician reviews and validate after old fuse switch is in closing position, and in two buckets, electricians cooperatively interact installing insulating support and bypass fuse switch;
4) in two buckets, electrician coordinates installing insulating drainage thread, by two end terminals of insulation lead wire with fall prevention rope buckle on wire, untie the insulation masked isolation measure on wire, remove wire oxide layer, installing insulating drainage thread, and then insulated masked isolation again in drainage thread wire clamp place;
5) in bucket electrician with the electric current of current tester test insulation lead wire, confirm through-flow good after, pull open old fuse switch with insulating bar; In bucket, electrician should wear protective ocular, and in bucket, electrician and isolating switch should have enough distances, and the effective insulated lengths of insulating bar should be not less than 0.7m;
6) remove old fuse switch and both sides lead-in wire thereof, be replaced by new fuse switch of good performance, and both sides lead-in wire is installed, and then the insulation masked isolation measure that recovery is improved on the earth potential components such as new fuse switch, cross-arm.
7) in bucket, electrician tests the electric current on new fuse switch lead-in wire with current tester, determine through-flow good after, to close fuse switch with insulating bar, remove insulation lead wire, bypass fuse switch and insulating support, during dismounting, two people answer homophase, synchronously carry out, and should recover the insulation masked isolation measure on main traverse line in time; In bucket, electrician should wear protective ocular, and in bucket, electrician and fuse switch should have enough distances, and the effective insulated lengths of insulating bar should be not less than 0.7m.
8) according to above-mentioned steps 3)-step 7) changes the old fuse switch of outside phase, middle phase successively.
9) in bucket, electrician shifts insulation bucket and arrives the mesophase spherule of fuse switch both sides, outside phase, the mutually suitable service position of inner edge respectively, to insulate masked isolation measure according to the orderly release contrary with arranging masked isolation measure of insulating; The order of removing is followed successively by electrified body, earth electrode, fuse switch switch and the fuse switch lead-in wire that setting closes on; When removing the insulation masked isolation measure on electrified body, action should be light and slow, and should have enough safe distances (being not less than 0.4m) between the earth potential component such as cross-arm, with neighbour mutually between should have enough safe distances (being not less than 0.6m)
10) in bucket, electrician withdraws from live line working region, and return to ground, work complete termination work ticket, and shift withdraws operation field.
Insulating support adds the security activity scope of operating personnel, shorten the activity duration, reduce labour intensity and the difficulty of operating personnel, 10kV bypass fuse switch is connected with adopting insulation lead wire between wire, adopt insulating support to be connected between the grounding apparatuss such as 10kV bypass fuse switch and electric pole, this connected mode avoids the damage to wire and other electric equipment of the electric arc that produces when fuse switch disconnects.Insulation lead wire, bypass fuse switch and insulating support are easy to assembling, avoid the potential safety hazard in many hot line maintenances, significantly reduce the labour intensity of operating personnel.
Insulation lead wire has good insulation property, adopts the hanging point locking type of having insulation sheath to be connected with equipment connection place in operation, swift to operate, and safety flexibly; Bypass fuse switch has self arc function; Insulating support adopts extension type insulating material to make, and has good mechanical performance, is convenient to install.Adopt insulation soft ribbons mode of tightening up to be connected with electric pole, its mechanical strength meets impulsive force requirement during switching manipulation, and its collapsing length meets live-working safety required distance.
Live line working of the present invention should be carried out under good weather.As with thunder and lightning (hear thunder, see lightning), avenge, hail, rain, mist etc., forbidden to carry out live line working.Wind-force is greater than 5 grades, or when humidity is greater than 80%, generally should not carry out live line working.Under special circumstances, when bad weather carries out hot-line repair, the relevant personnel must should be organized to discuss fully and work out necessary safety measure, being in charge of through our unit and producing after leader (chief engineer) ratifies and can carry out.
This operation needs inactive reclosing, prevents because short circuit line reclosing between alternate or phase ground causes secondary electric shock evil.

Claims (1)

1. on-load changes the operational method of 10kV fuse switch, it is characterized in that, insulation lead wire bypass fuse switch is adopted to shunt at fuse switch two ends to be replaced direct connection, when ensureing to power to based model for load duration, realize on-load and change 10kV fuse switch, its concrete operation step is as follows:
1) in two buckets, electrician operates aerial lift device with insulated arm respectively, enters live line working region;
2) bucket that insulate arrives the proper operation position of the inner edge phase of fuse switch, outside phase and middle phase respectively, carry out insulation masked isolation according to the order of " from the close-by examples to those far off ", " from top to bottom ", " first big after small " to the position may touched in operation, the position of covering and order are followed successively by the earth electrode that fuse switch lead-in wire, fuse switch, wire and setting close on;
3) in bucket, electrician reviews and validate after fuse switch is in closing position, and in two buckets, electricians cooperatively interact installing insulating support and bypass fuse switch;
4) in two buckets, electrician coordinates installing insulating drainage thread, by two end terminals of insulation lead wire with fall prevention rope buckle on wire, untie the insulation masked isolation measure on wire, remove wire oxide layer, installing insulating drainage thread, and then the measure of insulation masked isolation is reset to drainage thread wire clamp place;
5) in bucket electrician with the electric current of current tester test insulation lead wire, confirm through-flow good after, pull open old fuse switch with insulating bar;
6) remove old fuse switch and both sides lead-in wire thereof, more renew fuse switch, and both sides lead-in wire is installed, and then recover to improve the insulation masked isolation measure on lead-in wire, new fuse switch, cross-arm earth potential component;
7) in bucket, electrician tests the electric current on new fuse switch lead-in wire with current tester, determine through-flow good after, to close new fuse switch with insulating bar, remove bypass fuse switch, insulation lead wire and insulating support, during dismounting, two people answer homophase, synchronously carry out, and recover the insulation masked isolation measure on main traverse line in time;
8) according to above-mentioned steps 3)-step 7) successively the old fuse switch of outside phase, middle phase is changed;
9) in bucket, electrician shifts insulation bucket and arrives the mesophase spherule of fuse switch both sides, outside phase, the mutually suitable service position of inner edge respectively, to insulate masked isolation measure according to the orderly release contrary with arranging masked isolation measure of insulating, the order of dismounting is followed successively by electrified body, earth electrode, fuse switch switch and the fuse switch lead-in wire that setting closes on;
10) in bucket, electrician withdraws from live line working region, and return to ground, work complete termination work ticket, and shift withdraws operation field.
CN201210324115.7A 2012-09-03 2012-09-03 On-load changes the operational method of 10kV fuse switch Active CN102931609B (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103532047B (en) * 2013-10-16 2016-01-20 国家电网公司 A kind of operational method and device changing fuse switch on 10kV post
CN103969547A (en) * 2013-11-19 2014-08-06 上海诚意电气有限公司 10kV drop-out fuse online monitoring system
CN103746314A (en) * 2013-12-30 2014-04-23 江苏省电力公司常州供电公司 Quick hot-line by-pass jumper removing operation method for 10kV insulated power distribution line
CN106654808B (en) * 2017-01-22 2018-06-29 国网湖南省电力公司带电作业中心 A kind of electronic wire stripper of cable
CN106785942B (en) * 2017-01-25 2018-01-05 国网山东省电力公司乳山市供电公司 High-tension fuse operation protecting device and high-tension fuse protection against electric shock operational method
CN107425471A (en) * 2017-06-29 2017-12-01 吉林师范大学 10KV is zero load, and charged for replacement becomes the new method of platform fuse switch

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CN102394484A (en) * 2011-12-12 2012-03-28 辽宁省电力有限公司锦州供电公司 Method for replacing isolating switch with 10kV load

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