CN104158111A - 110 kV power transmission line dead-end insulator string live-line single-to-double operation method - Google Patents
110 kV power transmission line dead-end insulator string live-line single-to-double operation method Download PDFInfo
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- CN104158111A CN104158111A CN201310218542.1A CN201310218542A CN104158111A CN 104158111 A CN104158111 A CN 104158111A CN 201310218542 A CN201310218542 A CN 201310218542A CN 104158111 A CN104158111 A CN 104158111A
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Abstract
The invention discloses a 110 kV power transmission line dead-end insulator string live-line single-to-double operation method which employs an equipotential operation mode of an insulation ladder entering a strong electric field as a main approach and a ground potential operation mode for cooperating therewith. The method provided by the invention can finish line insulator string reconstruction operation under the condition of a live-wire line, is quite high in practicality and has a great effect in providing power supply reliability and ensuring power network safety.
Description
Technical field
The present invention relates to a kind of live line working method, particularly the charged pair working systems that singly change of a kind of 110kV power line tension insulator string.
Background technology
Fast Construction along with the every infrastructure of country, the whole province and even the whole nation all have a large amount of electric railways, highway, municipal highway to intersect and pass through from 110kV circuit below, for guaranteeing these important security reliabilities of crossing over section, just need to carry out the two string constructions of single falsification to crossing over the insulator string at section two ends.Owing to being subject to the restriction of working system, carried out this type of operation circuit in the past and all must have a power failure, not only affect power supply reliability, reduce service quality, limited by line outage, the circuit that needs transformation slowly cannot power cut construction, has potential safety hazard.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art part, and provide a kind of, applicable to 110kV power line tension insulator string is charged, singly change two working systems.
110kV power line tension insulator string is charged singly changes two working systems, and its step is as follows: (1), ground observation personnel set up theodolite at correct position, and the conducting wire sag before transformation is not observed, and records reading; (2), on shaft tower, earth potential electrician and equipotential electrician cooperation are arranged on suitable job position by insulated ladder, guaranteeing has enough combinational gaps when operating personnel enters electric field, equipotential electrician enters electric field along insulated ladder, arrives insulator string side of wire was strain clamp position; (3), ground coordinates personnel that Work tool is winched to setting, equipotential electrician installs the fixing-line device of backup protection rope side of wire was on wire, earth potential electrician is fixed on backup protection rope tail end on steel tower cross-arm; (4), equipotential electrician coordinates with earth potential electrician insulation wire tensioning device 1-1 tackle pulley is arranged between cross-arm and wire, and the high-strength insulating pull rope of insulation wire tensioning device put to ground, ground electrician is connected chain wire grip with the pull rope that insulate; (5), work on the spot director commands ground electrician to tighten up slightly insulation pull rope by wire grip, after equipotential electrician and earth potential electrician impact the stressed equal nothing of each bearing tool of detailed inspection are abnormal, equipotential electrician removes the spring catch of side of wire was socket-clevis eye, work director commands ground electrician to continue to tighten up pull rope again, until the insulator string of single string structure is lax, equipotential electrician coordinates with earth potential electrician, removes simply connected insulator string; (6) ground coordinates personnel that the duplex insulator string of the equal length newly assembling is winched to setting, and equipotential electrician and earth potential electrician cooperation connect duplex insulator string; (7), ground coordinates personnel slowly to unclamp wire grip, until completely lax, earth potential electrician and equipotential electrician check that each stress point is without abnormal rear dismounting wire tensioning device and backup protection rope.
110kV power line tension insulator string of the present invention is charged singly changes two working systems, and on shaft tower, operating electrician 3 people ground electrician 4 people and sag observation personnel 1 people can fulfil assignment, simple to operate.Complete an insulator string list and change two activity durations and only need 23 minutes, work efficiency is higher.A whole set of insulation wire tensioning device instrument total weight is less than 15 kilograms, lightweight, install easy to carry.Can avoid line outage, if the whole province carries out this working system 50 times every year, according to Fujian Electric Power Co., Ltd.'s " the many amount of power supply statistics of live line working way " regulation, average each many amount of power supply 30,000 degree, can reduce sale of electricity loss 1,500,000 degree every year simultaneously; Press 0.08 yuan of dynamoelectric benefit/degree, the economic benefit that many amount of power supply produce can reach 120,000 yuan.Owing to avoiding that user is had a power failure, promotes good service level, there is higher social benefit.
Described wire grip is chain wire grip.
Described 110kV power line tension insulator string is charged singly to be changed two working systems and also comprises: whether whether ground observation personnel observe conducting wire sag and change, if change, calculate and change in allowed band.
So-called 1-1 tackle pulley is for referring to simple gate fly block, simple gate fixed block, and pull rope fixed end head is fixed on fixed block.
In sum, the present invention's following advantage compared to existing technology:
110kV power line tension insulator string of the present invention is charged singly to be changed two working systems and can in the situation that circuit is charged, complete line insulator string transformation operation, there is very strong practicality, improving power supply reliability, guaranteeing to bring into play greatly effect aspect power grid security.Operational method of the present invention adopts equal potential working mode that insulated ladder enters highfield to coordinate for the earth potential working mode of advocating peace.Adopting equal potential working mode is the maximum innovation of this working system, and domestic also not adopting changed single insulator string in this way.
embodiment
Below in conjunction with embodiment, the present invention is described in more detail.
Embodiment 1
(1), ground observation personnel correct position sets up theodolite, and the conducting wire sag before transformation is not observed, and records reading.The horizontal hair of theodolite crosshair is positioned to sag point place, locking vertical braking lock.
2), earth potential electrician and equipotential electrician coordinate insulated ladder is arranged on to suitable job position on shaft tower, guarantee when operating personnel enters electric field, there are enough combinational gaps.Equipotential electrician enters electric field along insulated ladder, arrives insulator string side of wire was strain clamp position.
3), ground coordinates personnel that Work tool is winched to setting.Equipotential electrician installs the fixing-line device of backup protection rope side of wire was on wire, and earth potential electrician is fixed on backup protection rope tail end on steel tower cross-arm.
4), equipotential electrician coordinates the wire tensioning device that will insulate (1-1 tackle pulley) to be arranged between cross-arm and wire with earth potential electrician, and the high-strength insulating pull rope of insulation wire tensioning device is put to ground, ground electrician is connected chain wire grip with insulation pull rope.
(5), work on the spot director commands ground electrician to tighten up slightly insulation pull rope by wire grip, after equipotential electrician and earth potential electrician impact the stressed equal nothing of each bearing tool of detailed inspection are abnormal, equipotential electrician removes the spring catch of side of wire was socket-clevis eye, work director commands ground electrician to continue to tighten up pull rope again, until the insulator string of single string structure is lax, equipotential electrician coordinates with earth potential electrician, removes simply connected insulator string;
(6), ground coordinates personnel that the duplex insulator string of the equal length newly assembling is winched to setting, equipotential electrician and earth potential electrician coordinate duplex insulator string are connected.
(7), ground coordinates personnel slowly to unclamp chain wire grip, until completely lax.Earth potential electrician and equipotential electrician check that each stress point is without abnormal rear dismounting wire tensioning device and backup protection rope.
8), whether ground observation personnel observe conducting wire sag and change, if change, calculate and whether change in allowed band.
It is same as the prior art that the present embodiment is not stated part.
Claims (3)
1. 110kV power line tension insulator string is charged singly changes two working systems, it is characterized in that, step is as follows: (1), ground observation personnel set up theodolite at correct position, and the conducting wire sag before transformation is not observed, and records reading; (2), on shaft tower, earth potential electrician and equipotential electrician cooperation are arranged on suitable job position by insulated ladder, guaranteeing has enough combinational gaps when operating personnel enters electric field, equipotential electrician enters electric field along insulated ladder, arrives insulator string side of wire was strain clamp position; (3), ground coordinates personnel that Work tool is winched to setting, equipotential electrician installs the fixing-line device of backup protection rope side of wire was on wire, earth potential electrician is fixed on backup protection rope tail end on steel tower cross-arm; (4), equipotential electrician coordinates with earth potential electrician insulation wire tensioning device 1-1 tackle pulley is arranged between cross-arm and wire, and the high-strength insulating pull rope of insulation wire tensioning device put to ground, ground electrician is connected chain wire grip with the pull rope that insulate; (5), work on the spot director commands ground electrician to tighten up slightly insulation pull rope by wire grip, after equipotential electrician and earth potential electrician impact the stressed equal nothing of each bearing tool of detailed inspection are abnormal, equipotential electrician removes the spring catch of side of wire was socket-clevis eye, work director commands ground electrician to continue to tighten up pull rope again, until the insulator string of single string structure is lax, equipotential electrician coordinates with earth potential electrician, removes simply connected insulator string; (6) ground coordinates personnel that the duplex insulator string of the equal length newly assembling is winched to setting, and equipotential electrician and earth potential electrician cooperation connect duplex insulator string; (7), ground coordinates personnel slowly to unclamp wire grip, until completely lax, earth potential electrician and equipotential electrician check that each stress point is without abnormal rear dismounting wire tensioning device and backup protection rope.
2. 110kV power line tension insulator string according to claim 1 is charged singly changes two working systems, it is characterized in that: described wire grip is chain wire grip.
3. 110kV power line tension insulator string according to claim 2 is charged singly changes two working systems, it is characterized in that: described operational method also comprises that ground observation personnel observe conducting wire sag and whether change, if change, calculate and whether change in allowed band.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310218542.1A CN104158111A (en) | 2013-06-04 | 2013-06-04 | 110 kV power transmission line dead-end insulator string live-line single-to-double operation method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310218542.1A CN104158111A (en) | 2013-06-04 | 2013-06-04 | 110 kV power transmission line dead-end insulator string live-line single-to-double operation method |
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| CN104158111A true CN104158111A (en) | 2014-11-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310218542.1A Pending CN104158111A (en) | 2013-06-04 | 2013-06-04 | 110 kV power transmission line dead-end insulator string live-line single-to-double operation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811312A (en) * | 2016-06-06 | 2016-07-27 | 国网湖南省电力公司带电作业中心 | Bottle-supporting and line-tightening tool for replacing tension insulator of distribution line and application method thereof |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1714736A1 (en) * | 1988-10-03 | 1992-02-23 | Levchenko Vladimir G | Method of replacement of dead-end insulator strings on alive aerial power lines |
| CN101022212A (en) * | 2007-03-23 | 2007-08-22 | 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 |
| CN101174761A (en) * | 2007-10-30 | 2008-05-07 | 重庆市电力公司超高压局 | High-voltage power line tension insulator string forward spin live-wire altering method and two yoke plate device |
| CN201113303Y (en) * | 2007-03-23 | 2008-09-10 | 上海市电力公司超高压输变电公司 | Electriferous replacing device of strain-resisting insulator bunch for high-voltage transmission line |
| CN101752806A (en) * | 2009-12-15 | 2010-06-23 | 云南电网公司大理供电局 | Connecting plate for replacing 220kV double bundle conductor strain insulator with centricity and method thereof |
| CN103066528A (en) * | 2012-12-13 | 2013-04-24 | 云南电网公司带电作业分公司 | Replacing device and replacing method of high altitude 500-kilovolt strain fourfold insulator chain |
-
2013
- 2013-06-04 CN CN201310218542.1A patent/CN104158111A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SU1714736A1 (en) * | 1988-10-03 | 1992-02-23 | Levchenko Vladimir G | Method of replacement of dead-end insulator strings on alive aerial power lines |
| CN101022212A (en) * | 2007-03-23 | 2007-08-22 | 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 |
| CN201113303Y (en) * | 2007-03-23 | 2008-09-10 | 上海市电力公司超高压输变电公司 | Electriferous replacing device of strain-resisting insulator bunch for high-voltage transmission line |
| CN101174761A (en) * | 2007-10-30 | 2008-05-07 | 重庆市电力公司超高压局 | High-voltage power line tension insulator string forward spin live-wire altering method and two yoke plate device |
| CN101752806A (en) * | 2009-12-15 | 2010-06-23 | 云南电网公司大理供电局 | Connecting plate for replacing 220kV double bundle conductor strain insulator with centricity and method thereof |
| CN103066528A (en) * | 2012-12-13 | 2013-04-24 | 云南电网公司带电作业分公司 | Replacing device and replacing method of high altitude 500-kilovolt strain fourfold insulator chain |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105811312A (en) * | 2016-06-06 | 2016-07-27 | 国网湖南省电力公司带电作业中心 | Bottle-supporting and line-tightening tool for replacing tension insulator of distribution line and application method thereof |
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Application publication date: 20141119 |
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