CN102394484A - Method for replacing isolating switch with 10kV load - Google Patents
Method for replacing isolating switch with 10kV load Download PDFInfo
- Publication number
- CN102394484A CN102394484A CN2011104104010A CN201110410401A CN102394484A CN 102394484 A CN102394484 A CN 102394484A CN 2011104104010 A CN2011104104010 A CN 2011104104010A CN 201110410401 A CN201110410401 A CN 201110410401A CN 102394484 A CN102394484 A CN 102394484A
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- isolating switch
- insulation
- switch
- bucket
- arm vehicle
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- 238000000034 method Methods 0.000 title claims abstract description 18
- 238000009413 insulation Methods 0.000 claims abstract description 50
- 239000004020 conductor Substances 0.000 claims description 7
- 238000007689 inspection Methods 0.000 claims description 6
- 230000004888 barrier function Effects 0.000 claims description 3
- 230000000873 masking effect Effects 0.000 claims description 3
- 230000015572 biosynthetic process Effects 0.000 claims 1
- 230000008033 biological extinction Effects 0.000 abstract 2
- 230000005611 electricity Effects 0.000 abstract 1
- 238000012423 maintenance Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010891 electric arc Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
A method for replacing an isolating switch with 10kV load is disclosed. The method comprises the following steps: carrying out insulation shielding to a low-voltage live part which can be touched during lifting an insulation bucket, an edge phase lead which is closest to a body, the isolating switch, and the live parts and grounded parts that can be touched in a working scope; taking an insulation drainage wire and connecting an arc extinction switch on the insulation drainage wire; connecting the insulation drainage wire to two sides of the isolating switch; closing the arc extinction switch and disconnecting two end lead wires of the isolating switch; replacing the isolating switch under a state without power; installing the two end lead wires of the isolating switch on the new isolating switch; dismounting all insulation shielding appliances. The state of being power off is not needed for replacing the isolating switch. Processing time is short. A working efficiency is high and power supply reliability is high too. Electricity losses are less.
Description
Technical field
The present invention relates to a kind of method of operation of live line working, relate in particular to a kind of 10kV on-load and change the isolator operation method.
Background technology
Isolating switch is in outdoor and load carrying for a long time as a kind of important current-carrying equipment in the 10kV distribution line, and failure rate is high.The requirement isolating switch can not be charged when changing isolating switch, and the method for existing replacing isolating switch is: the mode of 1, taking line outage---and the whole piece transmission line at isolating switch place is had a power failure, change isolating switch; 2, take not on-load live line working method---the circuit between isolating switch and the load is broken off, change isolating switch.The problem that said method exists has: 1, power failure scope is wide, and electric quantity loss is serious, and economic loss is big; 2, a large number of users outage in the power supply area, power supply reliability is poor; 3, request power failure permission formality is loaded down with trivial details, and the processing time is long, causes inefficiency.
Summary of the invention
The technical problem that the present invention will solve provide a kind ofly do not cut off the power supply when changing isolating switch, the processing time is short, the 10kV on-load of high efficiency is changed the isolator operation method, to guarantee power supply reliability, reduces electric quantity loss.
The present invention is achieved in that
A kind of 10kV on-load is changed the isolator operation method, and its special character is that concrete steps are following:
According to the position of isolating switch and near environment bucket arm vehicle is parked near the isolating switch so that electrician's operation, selected up-down direction and path are decontroled the bucket arm vehicle supporting leg bucket arm vehicle car body are adjusted to level, beat ground stud, even good bucket arm vehicle earth connection;
2. go up safety barrier and working signal all around at bucket arm vehicle and instrument putting position, inspection, the various insulating protection apparatus of test are also guaranteed that it is qualified, can normally be used;
3. the operation bucket arm vehicle is convenient to operating position near rising to the depression belt electric lead, the low pressure live part that in bucket arm vehicle insulation bucket goes up and down, possibly touch is insulated cover;
4. operation bucket arm vehicle, raise the insulation bucket also adjustment insulation bucket to being fit to job position; To in health nearest limit phase conductor, isolating switch and working range live part, the grounded parts that might touch insulate and cover;
5. get the insulation drainage thread, on the insulation drainage thread, connect crowbar switch;
6. the insulation drainage thread that will connect crowbar switch is connected the position of being convenient to connect in the isolating switch both sides and forms by-pass line, and this moment, crowbar switch was in off-state, rapidly insulation is recovered in the contact both sides after connection is accomplished and covers;
7. closed crowbar switch, the conducting by-pass line, whether through-flow normal, as undesired, pull down by-pass line and repeated for the 5th, 6,7 steps if detecting the by-pass line electric current with galvanometer, show normal up to galvanometer;
8. take the two ends lead-in wire of isolating switch apart, the two ends lead-in wire can be guaranteed that with covering to be fixed on after apparatus covers distance to the ground is convenient to the position that connects again;
9. under electroless state, change isolating switch;
10. change finish after, the isolating switch after changing is carried out insulation covers, the two ends lead-in wire of opening isolating switch covers apparatus, the two ends lead-in wire of isolating switch is installed on the new isolating switch, and recovers insulation and cover;
11. whether the isolating switch after the electrician detect to change with galvanometer is through-flow normal, after galvanometer shows that index is normal, removes insulation drainage thread and crowbar switch, and recovers insulation and cover;
12. after all replacing finishes, remove all insulation and cover apparatus;
Struggle against near the depression belt electric lead 13. move insulation, remove the mask on the low pressure live part;
14. behind the masking device complete removal, the insulation bucket returns ground, site clearing and instrument, and the inspection process of work confirms that errorless recession is from on-the-spot.
Above-mentioned 10kV on-load is changed the isolator operation method, the electrician to when the nearest limit phase conductor of health is installed the lead mask, the opening directed towards ground of the mask that is inserted in, and move edge near isolating switch, with the insulating blanked clamper clamping with slip-off preventing.
The invention has the beneficial effects as follows:
1, owing to be provided with by-pass line, avoided the power failure that causes because of maintenance, electric quantity loss is little, has reduced economic loss; Improved power supply reliability, little to the influence of resident living; The request that need not has a power failure and permits, has shortened the operating time, has improved efficient.
2, owing to adopted disconnection, the conducting control device of crowbar switch as by-pass line, more convenient to operate, step is simpler, the functional promotion of the elimination electric arc of itself coefficient of safety of operation.
3, because the length of insulation drainage thread is significantly shorter than the length of cable, replace cable, dwindled electrician's job area, improved operating efficiency with the insulation drainage thread; Insulation drainage thread two ends have connector, and connection procedure is simple, has reduced operation easier, has promoted the fail safe of operation; Simultaneously, insulation drainage thread cost is low, be convenient to transportation, reduced maintenance cost.
4, cover comprehensively, fail safe is good.
Description of drawings
Fig. 1 is an initial condition sketch map of the present invention;
Fig. 2 is that by-pass line of the present invention connects sketch map;
Fig. 3 is an inspecting state sketch map of the present invention.
Among the figure: 1-isolating switch, 2-bucket arm vehicle, 3-crowbar switch, the 4-drainage thread that insulate, 5-limit phase conductor, 6-depression belt electric lead.
Embodiment
It is following that this 10kV on-load is changed isolator operation method concrete steps:
According to the position of isolating switch 1 and near environment bucket arm vehicle 2 is parked near the isolating switch 1; So that electrician's operation, selected up-down direction and path are decontroled bucket arm vehicle 2 supporting legs bucket arm vehicle 2 car bodies are adjusted to level; Beat ground stud, connect good bucket arm vehicle earth connection.
2. go up safety barrier and working signal all around at bucket arm vehicle 2 and instrument putting position, inspection, the various insulating protection apparatus of test also guarantee that it is qualified, handy.
3. operation bucket arm vehicle 2 is convenient to operating position near rising to depression belt electric lead 6, the low pressure live part that in the insulation bucket goes up and down, possibly touch is insulated cover.
4. operate bucket arm vehicle 2, the insulation bucket that raises is also adjusted the bucket that insulate to being fit to job position; By far away from closely extremely, from big to small, from low to high; The principle of grounded parts behind elder generation's live part; To in the nearest limit phase conductor 5 of health, isolating switch 1 and working range live part, the grounded parts that might touch insulate and cover, wherein, the opening of the mask that when the nearest limit phase conductor 5 of health is installed the lead masks, is inserted in is wanted directed towards ground the electrician; And move edge near isolating switch 1, clamp with slip-off preventing with insulating blanked clamper.
5. get insulation drainage thread 4, on insulation drainage thread 4, connect crowbar switch 3.
6. the insulation drainage thread 4 that will connect crowbar switch 3 is connected the position of being convenient to connect in isolating switch 1 both sides and forms by-pass line, and this moment, crowbar switch 3 was in off-state, rapidly insulation is recovered in the contact both sides after connection is accomplished and covers.
7. closed crowbar switch 3, the conducting by-pass line, whether through-flow normal, pull down by-pass line and repeated for the 5th, 6,7 steps up to the galvanometer demonstration normally as undesired with galvanometer if detecting the by-pass line electric current.
8. take the two ends lead-in wire of isolating switch 1 apart, the two ends lead-in wire can be guaranteed that with covering to be fixed on after apparatus covers distance to the ground is convenient to the position that connects again.
9. under electroless state, change isolating switch 1.
10. change finish after, the isolating switch 1 after changing is carried out insulation covers, the two ends lead-in wire of opening isolating switch 1 covers apparatus, the two ends lead-in wire of isolating switch 1 is installed on the new isolating switch 1, and recovers insulation and cover.
11. whether the electrician is through-flow normal with the isolating switch 1 that galvanometer detects after changing, and after galvanometer demonstration index is normal, remove insulation drainage thread 4 and crowbar switch 3, and the recovery insulation covered.
12. after all replacing finishes, remove all insulation and cover apparatus.
13. mobile insulation struggles against near be convenient to electrician's operation the depression belt electric lead 6 position, by far away from closely extremely, from big to small, from low to high, the principle of grounded parts behind the first live part is removed the mask on the low pressure live part.
14. behind the masking device complete removal, the insulation bucket returns ground, site clearing and instrument, and the inspection process of work confirms that errorless recession is from on-the-spot.
Claims (2)
1. a 10kV on-load is changed the method for operation of isolating switch, it is characterized in that concrete steps are following:
1.1 according to the position of isolating switch and near environment bucket arm vehicle is parked near the isolating switch so that electrician's operation, selected up-down direction and path are decontroled the bucket arm vehicle supporting leg bucket arm vehicle car body are adjusted to level, beat ground stud, even good bucket arm vehicle earth connection;
1.2 go up safety barrier and working signal all around at bucket arm vehicle and instrument putting position, inspection, the various insulating protection apparatus of test are also guaranteed that it is qualified, can normally be used;
1.3 the operation bucket arm vehicle rises near the depression belt electric lead, the low pressure live part that in the insulation bucket goes up and down, possibly touch is insulated cover;
1.4 the operation bucket arm vehicle, raise insulation bucket and adjustment insulation bucket are to being fit to job position; Bucket in health nearest limit phase conductor, isolating switch and working range live part, the grounded parts that might touch insulate and cover;
1.5 get the insulation drainage thread, on the insulation drainage thread, connect crowbar switch;
Be connected the position formation by-pass line of being convenient to connect in the isolating switch both sides 1.6 will connect the insulation drainage thread of crowbar switch, this moment, crowbar switch was in off-state, was rapidly recovered to insulate in the contact both sides after connection is accomplished and covered;
1.7 closed crowbar switch, the conducting by-pass line, whether through-flow normal, as undesired, pull down by-pass line and repeated for the 5th, 6,7 steps if detecting the by-pass line electric current with galvanometer, show normal up to galvanometer;
1.8 take the two ends lead-in wire of isolating switch apart, the two ends lead-in wire can be guaranteed that with covering to be fixed on after apparatus covers distance to the ground is convenient to the position that connects again;
1.9 under electroless state, change isolating switch;
1.10 change finish after, the isolating switch after changing is carried out insulation covers, the two ends lead-in wire of opening isolating switch covers apparatus, the two ends lead-in wire of isolating switch is installed on the new isolating switch, and recovers insulation and cover;
1.11 whether the isolating switch after the electrician detect to change with galvanometer is through-flow normal, after galvanometer shows that index is normal, removes insulation drainage thread and crowbar switch, and recovers insulation and cover;
1.12 after all replacing finishes, remove all insulation and cover apparatus;
Struggle against near the depression belt electric lead 1.13 move insulation, remove the mask on the low pressure live part;
1.14 behind the masking device complete removal, the insulation bucket returns ground, site clearing and instrument, and the inspection process of work confirms that errorless recession is from on-the-spot.
2. 10kV on-load as claimed in claim 1 is changed the isolator operation method; It is characterized in that: the electrician to when the nearest limit phase conductor of health is installed the lead mask; The opening directed towards ground of the mask that is inserted in, and move edge near isolating switch, clamp with insulating blanked clamper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104104010A CN102394484A (en) | 2011-12-12 | 2011-12-12 | Method for replacing isolating switch with 10kV load |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011104104010A CN102394484A (en) | 2011-12-12 | 2011-12-12 | Method for replacing isolating switch with 10kV load |
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| Publication Number | Publication Date |
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| CN102394484A true CN102394484A (en) | 2012-03-28 |
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| CN2011104104010A Pending CN102394484A (en) | 2011-12-12 | 2011-12-12 | Method for replacing isolating switch with 10kV load |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931609A (en) * | 2012-09-03 | 2013-02-13 | 辽宁省电力有限公司鞍山供电公司 | Operation method for replacing 10kV drop-out fuse in on-load manner |
| CN103001142A (en) * | 2012-09-03 | 2013-03-27 | 辽宁省电力有限公司鞍山供电公司 | Operation method for on-load replacing of 10kV pole-mounted disconnector |
| CN103326264A (en) * | 2013-06-06 | 2013-09-25 | 国家电网公司 | Single-pole perpendicularly-telescopic outdoor high-voltage alternating-current disconnector replacing method |
| CN103354325A (en) * | 2013-07-03 | 2013-10-16 | 国家电网公司 | Method for changing load switch in on-load manner |
| CN107946997A (en) * | 2017-12-21 | 2018-04-20 | 国网山东省电力公司烟台供电公司 | A kind of insulating bar method on-load isolates the operational method of switch in replacing |
| CN109346979A (en) * | 2018-10-23 | 2019-02-15 | 国网四川省电力公司南充供电公司 | A kind of on-load replacement insulation puncture line clamping is the method for special-shaped simultaneously hook wire clamp |
| CN114725827A (en) * | 2022-02-28 | 2022-07-08 | 云南电网有限责任公司红河供电局 | 10kV line live-line breaker live-line voltage transformer disconnection and connection operation method |
| CN115085080A (en) * | 2022-04-22 | 2022-09-20 | 广东德睿电气科技发展有限公司 | Operation method for replacing 10kv disconnecting switch under load |
| CN115173304A (en) * | 2022-07-13 | 2022-10-11 | 西安江夏电力设备制造有限公司 | Automatic hot-line work operating platform and method for replacing high-voltage equipment in bypass hot-line mode |
Citations (1)
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| CN201639190U (en) * | 2009-12-30 | 2010-11-17 | 北京市电力公司 | Charged arc-suppression draining operation device |
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Patent Citations (1)
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| CN201639190U (en) * | 2009-12-30 | 2010-11-17 | 北京市电力公司 | Charged arc-suppression draining operation device |
Non-Patent Citations (1)
| Title |
|---|
| 张海胜: "带负荷10kv配电线路更换隔离开关作用的探讨与实施", 《天津大学硕士学位论文》, 25 March 2011 (2011-03-25), pages 27 - 39 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102931609A (en) * | 2012-09-03 | 2013-02-13 | 辽宁省电力有限公司鞍山供电公司 | Operation method for replacing 10kV drop-out fuse in on-load manner |
| CN103001142A (en) * | 2012-09-03 | 2013-03-27 | 辽宁省电力有限公司鞍山供电公司 | Operation method for on-load replacing of 10kV pole-mounted disconnector |
| CN103326264A (en) * | 2013-06-06 | 2013-09-25 | 国家电网公司 | Single-pole perpendicularly-telescopic outdoor high-voltage alternating-current disconnector replacing method |
| CN103326264B (en) * | 2013-06-06 | 2016-06-29 | 国家电网公司 | Single-column vertical-telescopic-type outdoor high-voltage alternating replacing options |
| CN103354325A (en) * | 2013-07-03 | 2013-10-16 | 国家电网公司 | Method for changing load switch in on-load manner |
| CN107946997A (en) * | 2017-12-21 | 2018-04-20 | 国网山东省电力公司烟台供电公司 | A kind of insulating bar method on-load isolates the operational method of switch in replacing |
| CN107946997B (en) * | 2017-12-21 | 2019-07-19 | 国网山东省电力公司烟台供电公司 | The operational method of switch is isolated in a kind of replacement of insulating bar method on-load |
| CN109346979A (en) * | 2018-10-23 | 2019-02-15 | 国网四川省电力公司南充供电公司 | A kind of on-load replacement insulation puncture line clamping is the method for special-shaped simultaneously hook wire clamp |
| CN114725827A (en) * | 2022-02-28 | 2022-07-08 | 云南电网有限责任公司红河供电局 | 10kV line live-line breaker live-line voltage transformer disconnection and connection operation method |
| CN115085080A (en) * | 2022-04-22 | 2022-09-20 | 广东德睿电气科技发展有限公司 | Operation method for replacing 10kv disconnecting switch under load |
| CN115173304A (en) * | 2022-07-13 | 2022-10-11 | 西安江夏电力设备制造有限公司 | Automatic hot-line work operating platform and method for replacing high-voltage equipment in bypass hot-line mode |
| CN115173304B (en) * | 2022-07-13 | 2024-02-09 | 西安江夏电力设备制造有限公司 | Automatic live working operation platform and bypass live replacement method for high-voltage equipment |
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| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: STATE ELECTRIC NET CROP. Effective date: 20120928 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20120928 Address after: 121000 Guta District, Liaoning, Jiefang Road No. three, No. 9, No. Applicant after: Jinzhou Power Supply Company of Liaoning Electric Power Co., Ltd. Applicant after: State Grid Corporation of China Address before: 121000 Guta District, Liaoning, Jiefang Road No. three, No. 9, No. Applicant before: Jinzhou Power Supply Company of Liaoning Electric Power Co., Ltd. |
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| C12 | Rejection of a patent application after its publication | ||
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Application publication date: 20120328 |