CN104868404A - Insulated wire connection method - Google Patents
Insulated wire connection method Download PDFInfo
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- CN104868404A CN104868404A CN201510252070.0A CN201510252070A CN104868404A CN 104868404 A CN104868404 A CN 104868404A CN 201510252070 A CN201510252070 A CN 201510252070A CN 104868404 A CN104868404 A CN 104868404A
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- insulated conductor
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- aluminum pipe
- crimping
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Abstract
The invention relates to insulated wires of a power distribution network, specifically relates to an insulated wire connection method, and belongs to the technical field of the power distribution network. The method comprises steps of cutting the power, finding broken wires, crimping the wires, binding and fixing the wires, and delivering the power. By employing the method, a lightning-caused breaking problem can be rapidly and appropriately solved, safe operation of the overhead insulation power distribution network is guaranteed, the connection is convenient, emergency maintenance can be rapidly carried out, and time and labor are saved.
Description
Technical field
The present invention relates to a kind of insulated conductor of power distribution network, a kind of insulated conductor method of attachment, belongs to distribution network technology field specifically.
Background technology
Current electric distribution network overhead wire is widely used insulated conductor, but often has the accident of lightning-caused breaking to occur in running.For south, Shanghai Electric Power Co city electric company, during 1998 ~ 2003 years, lightning-caused breaking average out to 2.78 times/(hundred kilometers/year).Thunderbolt in 2004 causes line fault 606 times, insulated conductor breakage caused by lightning stroke 7 times (successful reclosing 3 times is for 1 time wherein ground state).Wire spacing is about 60cm, and broken string mostly is two-phase or three phase isolated wire and involves generation insulator arc-over simultaneously; There is the phenomenon of lightning fault in the circuit many places that also happen occasionally.
Along with the development in city, life must more come to want high to the requirement of power supply reliability by equipment, does not substantially allow to have a power failure.Therefore properly settle lightning-caused breaking problem, the safe operation of guarantee overhead insulating power distribution network, the life of people could normally be carried out.
The lightning-caused breaking emergency repair method of current power distribution network mainly comprises the steps:
1. after there is insulated conductor breakage, first, electric power first-aid personnel prepare restoring material and arrive actual repairing scene, and contact device personnel or O&M unit have a power failure to broken string circuit;
2. staff is according to wire breakpoint location determination Rush Repair Scheme, if breakpoint is between two electric poles, that just opens strain insulator between the electric pole on two sides, if breakpoint is wherein on a wire bar hanging point, only need open strain insulator unwrapping wire on this electric pole;
3. after power failure work completes, workmen steps on bar and carries out electrical verification ground connection, and hang earth rod may fall the place of power transmission, after waiting whole earth rod to hang, repair personnel can step on bar work;
4. step on bar personnel to step on bar and first straight line cross-arm is replaced with strain cross arm, strain insulator pikestaff is utilized to tighten up all the other two intact wires after completing, subsequently the wire of fracture is cut off, new wire is changed into again in new strain section, erection is got up again, fastening with strain insulator pikestaff, and the mode of overlap joint is taked at the two ends of electric pole;
5. after having overlapped, workmen removes electric pole, pulls down earth rod, finally reports power transmission.
Summary of the invention
The object of the invention is to overcome above-mentioned weak point, thus provide a kind of easy to connect, rush to repair quick, time saving and energy saving insulated conductor method of attachment, can adequate solution lightning-caused breaking problem fast, ensure the safe operation of overhead insulating power distribution network.
According to technical scheme provided by the invention, a kind of insulated conductor method of attachment, it is characterized in that: comprise the steps: 1. power failures: electric power first-aid personnel prepare restoring material and arrive actual repairing scene, contact device personnel or O&M unit have a power failure to broken string circuit; 2. search broken string: after power failure safety measure is carried out, first search circuit breaking place, find insulated conductor breakage place; Find behind insulated conductor breakage place, the wire at two ends, insulated conductor breakage place is processed, peels off surface insulation layer and expose aluminum steel; 3. crimp: the aluminum steel that two ora terminalis conductor cord disconnections expose is inserted respectively in the middle of special aluminum pipe two ends, then with press-connection machine, certain power is applied to aluminum pipe, the aluminum steel at aluminum pipe and two ends has been fixed the crimping of insulated conductor breakage; 4. colligation is fixed: by the insulated conductor crimped, at connection of broken lines place, insulating tape colligation completes, and ensures its original insulating properties, then by aluminium wire colligation on cross arm insulator; 5. power transmission: report power transmission, repairing terminates.
Further, press-connection machine applies the power of 80kPA to aluminum pipe.
Further, before special aluminum pipe crimping, length is 210mm, and after crimping, length is 235mm.
Further, the length range peelling off surface insulation layer is 8 ~ 10mm.
Compared with the prior art the present invention has the following advantages:
Structure of the present invention is simple, compact, reasonable, can adequate solution lightning-caused breaking problem fast, ensures the safe operation of overhead insulating power distribution network, easy to connect, rush to repair quick, time saving and energy saving.
Embodiment
The present invention below will be further described embodiment:
The insulated conductor of what current circuit 10kV distribution line adopted is LGJ-240 wire,
Electric wire model cross section (mm2) external diameter (mm) weight (kg/km) coefficient of elasticity (kg)
LGJ-240/30 275.96 21.6 922.2 0
LGJ-240/40 277.75 21.66 964.3 0
LGJ-240/55 297.57 22.4 1108 0
In embodiment one: 10kV distribution line, wire type is the broken string emergency repair method of LGJ-240/30, mainly comprises the steps:
1. have a power failure: electric power first-aid personnel prepare restoring material and arrive actual repairing scene, contact device personnel or O&M unit have a power failure to broken string circuit;
2. search broken string: after power failure safety measure is carried out, first search circuit breaking place, find insulated conductor breakage place; Find behind insulated conductor breakage place, the wire at two ends, insulated conductor breakage place is processed, peel off surface insulation layer 8mm and expose aluminum steel;
3. crimp: the aluminum steel that two ora terminalis conductor cord disconnections expose is inserted respectively in the middle of special aluminum pipe two ends, then with press-connection machine, the power of 80kPA is applied to aluminum pipe, the aluminum steel at aluminum pipe and two ends has been fixed the crimping of insulated conductor breakage; Before special aluminum pipe crimping, length is 210mm, and after crimping, length is 235mm;
4 colligations are fixed: by the insulated conductor crimped, at connection of broken lines place, insulating tape colligation completes, and ensures its original insulating properties, then by aluminium wire colligation on cross arm insulator;
5. power transmission: report power transmission, repairing terminates.
In embodiment two: 10kV distribution line, wire type is the broken string emergency repair method of LGJ-240/40, mainly comprises the steps:
1. have a power failure: electric power first-aid personnel prepare restoring material and arrive actual repairing scene, contact device personnel or O&M unit have a power failure to broken string circuit;
2. search broken string: after power failure safety measure is carried out, first search circuit breaking place, find insulated conductor breakage place; Find behind insulated conductor breakage place, the wire at two ends, insulated conductor breakage place is processed, peel off surface insulation layer 9mm and expose aluminum steel;
3. crimp: the aluminum steel that two ora terminalis conductor cord disconnections expose is inserted respectively in the middle of special aluminum pipe two ends, then with press-connection machine, the power of 80kPA is applied to aluminum pipe, the aluminum steel at aluminum pipe and two ends has been fixed the crimping of insulated conductor breakage; Before special aluminum pipe crimping, length is 210mm, and after crimping, length is 235mm;
4 colligations are fixed: by the insulated conductor crimped, at connection of broken lines place, insulating tape colligation completes, and ensures its original insulating properties, then by aluminium wire colligation on cross arm insulator;
5. power transmission: report power transmission, repairing terminates.
In embodiment three: 10kV distribution line, wire type is the broken string emergency repair method of LGJ-240/50, mainly comprises the steps:
1. have a power failure: electric power first-aid personnel prepare restoring material and arrive actual repairing scene, contact device personnel or O&M unit have a power failure to broken string circuit;
2. search broken string: after power failure safety measure is carried out, first search circuit breaking place, find insulated conductor breakage place; Find behind insulated conductor breakage place, the wire at two ends, insulated conductor breakage place is processed, peel off surface insulation layer 10mm and expose aluminum steel;
3. crimp: the aluminum steel that two ora terminalis conductor cord disconnections expose is inserted respectively in the middle of special aluminum pipe two ends, then with press-connection machine, the power of 80kPA is applied to aluminum pipe, the aluminum steel at aluminum pipe and two ends has been fixed the crimping of insulated conductor breakage; Before special aluminum pipe crimping, length is 210mm, and after crimping, length is 235mm;
4 colligations are fixed: by the insulated conductor crimped, at connection of broken lines place, insulating tape colligation completes, and ensures its original insulating properties, then by aluminium wire colligation on cross arm insulator;
5. power transmission: report power transmission, repairing terminates.
Claims (4)
1. an insulated conductor method of attachment, is characterized in that: comprise the steps: 1. power failures: electric power first-aid personnel prepare restoring material and arrive actual repairing scene, and contact device personnel or O&M unit have a power failure to broken string circuit; 2. search broken string: after power failure safety measure is carried out, first search circuit breaking place, find insulated conductor breakage place; Find behind insulated conductor breakage place, the wire at two ends, insulated conductor breakage place is processed, peels off surface insulation layer and expose aluminum steel; 3. crimp: the aluminum steel that two ora terminalis conductor cord disconnections expose is inserted respectively in the middle of special aluminum pipe two ends, then with press-connection machine, certain power is applied to aluminum pipe, the aluminum steel at aluminum pipe and two ends has been fixed the crimping of insulated conductor breakage; 4. colligation is fixed: by the insulated conductor crimped, at connection of broken lines place, insulating tape colligation completes, and ensures its original insulating properties, then by aluminium wire colligation on cross arm insulator; 5. power transmission: report power transmission, repairing terminates.
2. a kind of insulated conductor method of attachment as claimed in claim 1, is characterized in that: described press-connection machine applies the power of 80kPA to aluminum pipe.
3. a kind of insulated conductor method of attachment as claimed in claim 1, is characterized in that: before described special aluminum pipe crimping, length is 210mm, and after crimping, length is 235mm.
4. a kind of insulated conductor method of attachment as claimed in claim 1, is characterized in that: described in peel off surface insulation layer length range be 8 ~ 10mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510252070.0A CN104868404A (en) | 2015-05-18 | 2015-05-18 | Insulated wire connection method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510252070.0A CN104868404A (en) | 2015-05-18 | 2015-05-18 | Insulated wire connection method |
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| CN104868404A true CN104868404A (en) | 2015-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510252070.0A Pending CN104868404A (en) | 2015-05-18 | 2015-05-18 | Insulated wire connection method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112242665A (en) * | 2020-09-29 | 2021-01-19 | 浙江大有实业有限公司带电作业分公司 | Power distribution network overhead conductor replacing method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041669A (en) * | 1989-05-06 | 1990-04-25 | 甘肃送变电工程公司 | Overhead reparing method for broken strand of steel-cored aluminium strand wire |
| JPH06233425A (en) * | 1993-02-03 | 1994-08-19 | Chubu Electric Power Co Inc | Method and apparatus for temporary connection of wire |
| CN202906306U (en) * | 2012-10-25 | 2013-04-24 | 合保电气（芜湖）有限公司 | Fast connector |
| CN202997418U (en) * | 2012-11-24 | 2013-06-12 | 宜阳县电业管理公司 | Quick restoring device for overhead wire of 10kV power distribution line |
-
2015
- 2015-05-18 CN CN201510252070.0A patent/CN104868404A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1041669A (en) * | 1989-05-06 | 1990-04-25 | 甘肃送变电工程公司 | Overhead reparing method for broken strand of steel-cored aluminium strand wire |
| JPH06233425A (en) * | 1993-02-03 | 1994-08-19 | Chubu Electric Power Co Inc | Method and apparatus for temporary connection of wire |
| CN202906306U (en) * | 2012-10-25 | 2013-04-24 | 合保电气（芜湖）有限公司 | Fast connector |
| CN202997418U (en) * | 2012-11-24 | 2013-06-12 | 宜阳县电业管理公司 | Quick restoring device for overhead wire of 10kV power distribution line |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112242665A (en) * | 2020-09-29 | 2021-01-19 | 浙江大有实业有限公司带电作业分公司 | Power distribution network overhead conductor replacing method |
| CN112242665B (en) * | 2020-09-29 | 2022-04-29 | 浙江大有实业有限公司带电作业分公司 | Power distribution network overhead conductor replacing method |
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| C06 | Publication | ||
| PB01 | Publication | ||
| EXSB | Decision made by sipo to initiate substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20150826 |
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| RJ01 | Rejection of invention patent application after publication |