CN112636251B - Method for changing 10kV straight pole into sectional pole in live mode - Google Patents
Method for changing 10kV straight pole into sectional pole in live mode Download PDFInfo
- Publication number
- CN112636251B CN112636251B CN202011642671.XA CN202011642671A CN112636251B CN 112636251 B CN112636251 B CN 112636251B CN 202011642671 A CN202011642671 A CN 202011642671A CN 112636251 B CN112636251 B CN 112636251B
- Authority
- CN
- China
- Prior art keywords
- insulating
- electrician
- electricians
- cross arm
- sides
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G1/00—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
- H02G1/02—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables
Landscapes
- Electric Cable Installation (AREA)
- Suspension Of Electric Lines Or Cables (AREA)
Abstract
The invention relates to a method for changing a 10kV straight pole into a sectional pole in an electrified way. The overhead line pole tower mainly solves the technical problem that many overhead line pole towers of the existing distribution line are in narrow roads or on the inner sides of trees on sidewalks and fields, and operation cannot be performed if an insulating bucket arm vehicle is adopted. The invention comprises the following steps: 1. installing insulating fence equipment and safety measures; 2. installing a temporary insulating cross arm and lifting a lead of a lead supporting rod; 3. installing and combining the cross arm and additionally installing an insulating shielding facility; 4. fixing the linear lead in sections; 5. and removing the insulation shielding facility and the insulation equipment.
Description
Technical Field
The invention relates to a live working method of a straight pole, in particular to a live working method for changing a 10kV straight pole into a sectional pole.
Background
The device for changing 10kV straight pole into the sectional pole is a relatively complicated live working method in distribution live working, and a plurality of insulating bucket arm vehicles are used for operation in the past. The insulating bucket arm vehicle is adopted to carry out suspension operation on two sides of a tower, but the operation of the insulating bucket arm vehicle is carried out by adopting an overhead line tower on the road side, and if the tower is not on the road side, the live-line operation cannot be carried out; at present, many overhead line towers of the distribution line are in narrow roads or inside sidewalk trees and fields, and the operation cannot be carried out if an insulating bucket arm vehicle is adopted.
Disclosure of Invention
The invention provides a method for changing a 10kV straight pole into a sectional pole in an electrified way, which mainly solves the technical problem that many overhead line poles and towers of a distribution line are in narrow roads or inside sidewalks and trees and fields, and operation cannot be carried out if an insulating bucket arm vehicle is adopted.
The technical scheme of the invention is as follows: a10 kV straight pole live-line pole-to-sectional pole operation method comprises the following steps:
1. equipment for installing insulating fence and safety measure
1.1, two live-line operators (No. 1 electrician and No. 2 electrician) climb up the electric pole, 2 small insulating pulleys are installed below a cross arm at the end part of the electric pole, and an insulating rope passes through the small insulating pulleys to be led to the ground;
1.2, mounting a metal bracket for fixing the insulating fence and the bracket at a position 1.8-2 m below the cross arm;
1.3, 2 groups of insulating supports and insulating fences are arranged on two sides of the metal bracket along the line direction;
no. 1.4 electricians and No. 1 electricians and No. 2 electricians enter the insulating fence; the No. 3 electrician climbs a pole and respectively transfers the 6 insulation sleeves to the No. 1 electrician and the No. 2 electrician in the fence;
1.5, No. 1 electrician and No. 2 electrician respectively install insulating sleeves on the middle phase lead; and then respectively installing insulating sleeves on the two side phase wires.
2. Installation temporary insulation cross arm and wire supporting rod wire rising
No. 2.1 electrician, No. 1 electrician, No. 2 electrician cooperate each other and mount the temporary insulating cross arm under the cross arm, and mount the insulating support bar of 3 supporting wires on the temporary cross arm;
no. 2, No. 1 electricians respectively install insulating shielding facilities (insulating covers or insulating partition plates or insulating cloth) on the grounding parts of the cross arms and the insulators;
the No. 2 and No. 1 electricians firstly remove the binding wires of the side phase wires on the insulators under the coordination of the No. 2 electricians, the No. 3 electricians vertically prop against the side phase wires by the insulating operating rods, and the No. 1 electrician and the No. 2 electricians are mutually matched to lift the side phase wires to the insulating supporting rods;
the other side phase and middle phase conductors are respectively lifted to the temporary insulating support rods by the electrician No. 2.4, No. 1, No. 2 and No. 3 in the same way as above.
3. Installation and installation of cross arm with insulation shielding facility
No. 3.1 electrician, No. 1 electrician, No. 2 electrician cooperate and assemble a cross arm in the original single cross arm of another side, and demolish column insulator and middle phase insulator on the original cross arm, make the original single cross arm become and combine the double cross arm;
3.2, No. 1 electricians and No. 2 electricians respectively install 3 strings of strain insulator strings on the two sides of the combined cross arm; cross arm insulating shielding covers are arranged on two sides of the combined cross arm, and an electric pole end insulating cover is arranged at the end of an electric pole;
under the coordination of the No. 3 electrician, the No. 3 electrician and the No. 1 electrician respectively drop the two side phase conductors from the temporary insulating support rods to the insulating shelves at the two sides of the cross arm insulating shielding cover, and then drop the middle phase conductors from the support rods to the insulating shelves at the inner side of the cross arm insulating shielding cover;
3.4, if the safe distance between the two sides is not enough, an insulating shielding facility is added at the conducting wire of the two sides;
and the temporary insulating cross arm and the insulating supporting rod are removed by matching the No. 3.5 electrician, the No. 1 electrician and the No. 2 electrician.
4. Linear conductor is opened segmentation and is fixed
4.1, No. 1 electricians and No. 2 electricians are matched to connect the insulating drainage wires with two sides of the middle phase lead;
4.2, No. 1 electrician and No. 2 electrician respectively tighten the middle phase lead on the strain clamp of the strain insulator string on the two sides of the middle phase by using the insulating tightener;
4.3, No. 1 electricians and No. 2 electricians are matched with two sides of the middle-phase tightened wire to install backup protection ropes;
no. 4.4 and No. 2 electricians respectively measure the current on the middle phase lead and the temporary drainage lead by using a clamp-type ammeter;
4.5, No. 1 electrician and No. 2 electrician are matched to cut off the middle of the middle phase conductor by using insulating bolt cutters;
4.6, No. 1 electrician and No. 2 electrician respectively fix the end part of the cut middle phase conductor in the strain clamp;
4.7, electrician No. 1 and electrician No. 2 remove the back-up protection rope and the tightener on the middle phase wire respectively;
4.8, No. 1 electrician and No. 2 electrician respectively install insulating shielding facilities to the neutral phase insulator string, the strain clamp and the lead;
fixing the other two-side phase conductors and the strain insulator string strain clamp at the two sides by 4.9 electricians, No. 1 electricians and No. 2 electricians according to the same steps of 4.1-4.8 respectively;
and 4.10, No. 1 electrician and No. 2 electrician adopt insulated wires to respectively connect the disconnected wires at two sides.
5. Demolish insulating facility of shielding and insulating equipment
No. 5.1 and No. 2 electricians adopt a clamp-type ammeter to respectively measure the current on the connecting lead and the temporary insulating drainage wire, and whether part of the current is transferred to the lead or not;
the No. 5.2 electrician, the No. 1 electrician and the No. 2 electrician respectively remove the temporary insulating drainage wire chucks on the two sides;
5.3, removing the insulating covers on the cross arm and the insulating cover at the end part of the electric pole;
5.4, dismantling insulation shielding facilities on the insulator strings and the wires on two sides of the two sides;
5.5, dismantling insulator strings and insulating shielding facilities on the lead wires on two sides of the middle phase;
5.6, electricians No. 1 and electricians No. 2 leave the insulated fence;
5.7, removing the insulating fence, the insulating support and the metal bracket;
and 5.8, finishing the work.
The invention has the beneficial effects that: if the insulated arm vehicle is adopted to carry out the operation, each phase of conducting wire and each action need to operate the insulated bucket of the arm vehicle to move up and down or rotate left and right. The double-rail type insulating platform device is not limited by the environment, and an operator can move left and right and up and down in the insulating rail (two to three layers of movable temporary pedals are arranged in the rail); an operator installs an insulating cross arm, an insulating support rod, a cross arm insulating shielding cover and a combined insulating shielding cover in an insulating fence; and installing temporary insulating drainage wires, tightening wires, fixing wires and the like in the insulating fence. The operation method is suitable for distribution overhead lines in various environments, and the fence type insulating platform device can be disassembled and assembled, is convenient to transport and carry and is suitable for live-line operation of replacing various devices by matching with various insulating shielding devices.
Drawings
Fig. 1 is a simplified schematic diagram of the electric pole of the present invention.
Fig. 2 is a schematic diagram of the installation of the insulated fence, the temporary insulated crossarm and the insulated support rod according to the present invention.
FIG. 3 is a schematic view of the cross arm insulation shielding cover of the present invention.
In the figure: 1-electric pole, 2-cross arm, 3-small insulating pulley, 4-metal bracket, 5-insulating fence, 6-insulating support, 7-temporary insulating cross arm, 8-insulating support rod and 9-cross arm insulating shielding cover.
Detailed Description
Referring to fig. 1-3, a method for changing a 10kV straight pole into a sectional pole with electricity comprises the following steps:
1. equipment for installing insulating fence and safety measure
1.1, No. 1 electricians and No. 2 electricians climb up the electric pole 1, two small insulating pulleys 3 are installed below the cross arm 2 at the end part of the electric pole, and an insulating rope passes through the small insulating pulleys and is led to the ground;
1.2, mounting and fixing a metal bracket 4 of an insulating fence 5 and an insulating bracket 6 at a position 1.8-2 m below the cross arm;
1.3, 2 groups of insulating supports 6 and insulating fences 5 are arranged on two sides of the metal bracket 4 along the line direction;
no. 1.4 electricians and No. 1 electricians and No. 2 electricians enter the insulating fence 5; the No. 3 electrician climbs a pole and respectively transfers the six insulating sleeves to the No. 1 electrician and the No. 2 electrician in the fence;
1.5, No. 1 electrician and No. 2 electrician respectively install insulating sleeves on the middle phase lead; and then respectively installing insulating sleeves on the two side phase wires.
2. Installation temporary insulation cross arm and wire support rod wire rise
No. 2.1 electrician, No. 1 electrician and No. 2 electrician are mutually matched, a temporary insulating cross arm 7 is arranged at a position 0.2m below the cross arm, and an insulating support rod 8 for supporting three wires is arranged on the temporary cross arm (the height of the insulating support rod is more than 0.6m away from the cross arm);
no. 2, No. 1 electricians respectively install insulating shielding facilities (insulating covers or insulating partition plates or insulating cloth) on the grounding parts of the cross arms and the insulators;
the No. 2 and No. 3 electricians firstly remove the binding wires of the side phase wires on the insulators under the matching of the No. 2 electricians, the No. 3 electricians vertically prop against the side phase wires by the insulating operating rods, and the No. 1 electrician and the No. 2 electrician are mutually matched to lift the side phase wires onto the insulating supporting rods 8 (the distance between the wires and the cross arm is more than 0.6 m);
the other side phase and middle phase conductors are respectively lifted to the temporary insulation support bars 8 by the electrician No. 2.4, No. 1, No. 2 and No. 3 in the same manner as described above.
3. Installation and installation of cross arm with insulating shielding facility
No. 3.1 electrician, No. 1 electrician, No. 2 electrician cooperate and assemble a cross arm in the original single cross arm of another side, and demolish column insulator and middle phase insulator on the original cross arm, make the original single cross arm become and combine the double cross arm;
3.2, No. 1 electricians and No. 2 electricians respectively install 3 strings of strain insulator strings on the two sides of the combined cross arm; cross arm insulating shielding covers 9 are arranged on two sides of the combined cross arm, and an electric pole end insulating cover is arranged at the end part of the electric pole;
under the coordination of the No. 3 electrician, the No. 3 electrician and the No. 1 electrician respectively descend the two side phase wires from the temporary insulating support rod 8 to the insulating shelves at the two sides of the cross arm insulating shielding cover 9, and then descend the middle phase wires from the insulating support rod 8 to the insulating shelves at the inner side of the cross arm insulating shielding cover 9;
3.4, if the safe distance between the two sides is not enough, an insulating shielding facility is added at the conducting wire of the two sides;
the temporary insulating cross arm 7 and the insulating support rod 8 are removed by the cooperation of No. 3.5 electrician, No. 1 electrician and No. 2 electrician.
4. Linear conductor is opened segmentation and is fixed
4.1, No. 1 electrician and No. 2 electrician cooperate to connect the insulated drainage wire with two sides of the middle phase conductor (if the insulated conductor should be stripped of the insulating layer and the conductor at the connection position of the drainage wire is subjected to deoxidation treatment);
4.2, No. 1 electrician and No. 2 electrician respectively tighten the middle phase conductor on the strain clamp of the strain insulator string on two sides of the middle phase by using the insulating tightener (the tension of the conductor should be the same as that of the original conductor);
4.3, No. 1 electricians and No. 2 electricians are matched with two sides of the middle-phase tightened lead to install backup protection ropes;
4.4 and 2 electricians respectively measure the current on the middle phase lead and the temporary drainage wire (part of the current is transferred to the insulating drainage wire);
4.5, No. 1 electrician and No. 2 electrician cooperate to cut off the middle part of the middle phase conductor by using an insulating bolt cutter;
4.6, No. 1 electrician and No. 2 electrician respectively fix the end part of the disconnected middle phase conductor in the strain clamp;
4.7, electrician No. 1 and electrician No. 2 remove the back-up protection rope and the tightener on the middle phase wire respectively;
4.8, No. 1 electrician and No. 2 electrician respectively install insulating shielding facilities to the neutral phase insulator string, the strain clamp and the lead;
fixing the other two-side phase conductors and the strain insulator string strain clamp at the two sides by a No. 4.9 electrician, a No. 1 electrician and a No. 2 electrician according to the same steps of 4.1-4.8 respectively;
and 4.10, No. 1 electrician and No. 2 electrician adopt insulated wires to respectively connect the disconnected wires on two sides (for example, when equipment is installed, the insulated wires on two sides of the equipment are connected with segmented wires on two sides, and the insulated wires are connected one by one).
5. Demolish insulating facility of shielding and insulating equipment
No. 5.1 and No. 2 electricians adopt a clamp-type ammeter to respectively measure the current on the connecting lead and the temporary insulating drainage wire, and whether part of the current is transferred to the lead or not is judged;
the No. 5.2 electrician, the No. 1 electrician and the No. 2 electrician respectively remove the temporary insulating drainage wire chucks on the two sides; (during dismantling, attention should be paid to the fact that the wires are dismantled from both sides simultaneously, and the wires should be dismantled phase by phase);
5.3, removing the cross arm insulating shielding cover 9 and the electric pole end insulating cover (if the safety distance is not enough, removing the insulating cover by adopting an insulating operating rod);
5.4, dismantling insulation shielding facilities on the insulator strings and the wires on two sides of the two sides;
5.5, removing insulator strings on two sides of the middle phase and insulating shielding facilities on the lead (if the safety distance is not enough, removing the insulating cover by adopting an insulating operating rod);
5.6, electrician No. 1 and electrician No. 2 leave the insulated fence 5;
5.7, dismantling the insulating fence 5, the insulating support 6 and the metal bracket 4;
and 5.8, finishing the work.
The insulating property and the mechanical strength of the installation operation device of the invention both meet the basic technical requirements and the design guide rule (GB/T18037-2000) requirements of the live working tool specified by the state.
Electrical test items, periods, requirements of insulating platforms
Mechanical test items, periods and requirements of insulating platform
Loading a load: the operator presses 80 kg; 15kg of tool; the total load is 85 kg; k = 2.5.
Test load: 85 × 2.5=212.5 kg.
Claims (1)
1. A method for changing a 10kV straight pole into a sectional pole in an electrified way is characterized by comprising the following steps: the method comprises the following steps:
1. installing insulating fence equipment and safety measures;
1.1, No. 1 electricians and No. 2 electricians climb up the electric pole, 2 small insulating pulleys are installed below a cross arm at the end part of the electric pole, and an insulating rope passes through the small insulating pulleys and is led to the ground;
1.2, mounting a metal bracket for fixing the insulating fence and the bracket at a position 1.8-2 m below the cross arm;
1.3, 2 groups of insulating supports and insulating fences are arranged on two sides of the metal bracket along the line direction;
no. 1.4 electricians and No. 1 electricians and No. 2 electricians enter the insulating fence; the No. 3 electrician climbs a pole and respectively transfers the 6 insulation sleeves to the No. 1 electrician and the No. 2 electrician in the fence;
1.5, No. 1 electrician and No. 2 electrician respectively install insulating sleeves on the middle phase lead; then, respectively installing insulating sleeves on the two side phase wires;
2. installing a temporary insulating cross arm and lifting a lead of a lead supporting rod;
no. 2.1 electrician, No. 1 electrician, No. 2 electrician cooperate each other and mount the temporary insulating cross arm under the cross arm, and mount the insulating support bar of 3 supporting wires on the temporary cross arm;
no. 2 and No. 1 electricians respectively add insulating shielding facilities to the grounding parts of the cross arm and the insulator;
the No. 2 and No. 1 electricians firstly remove the binding wires of the side phase wires on the insulators under the coordination of the No. 2 electricians, the No. 3 electricians vertically prop against the side phase wires by the insulating operating rods, and the No. 1 electrician and the No. 2 electricians are mutually matched to lift the side phase wires to the insulating supporting rods;
the electricians No. 2.4, No. 1, No. 2 and No. 3 respectively lift the other side phase and middle phase wires to the temporary insulating support rods by the same method;
3. installing and combining the cross arm and additionally installing an insulating shielding facility;
no. 3.1 electrician, No. 1 electrician, No. 2 electrician cooperate and assemble a cross arm in the original single cross arm of another side, and demolish column insulator and middle phase insulator on the original cross arm, make the original single cross arm become and combine the double cross arm;
3.2, No. 1 electricians and No. 2 electricians respectively install 3 strings of strain insulator strings on the two sides of the combined cross arm; cross arm insulating shielding covers are arranged on two sides of the combined cross arm, and an electric pole end insulating cover is arranged at the end of an electric pole;
under the coordination of No. 3 electrician, No. 3 electrician and No. 1 electrician and No. 2 electrician respectively drop the two side phase wires from the temporary insulating support rods to the insulating shelves at the two sides of the cross arm insulating shielding cover, and then drop the middle phase wires from the support rods to the insulating shelves at the inner side of the cross arm insulating shielding cover;
3.4, if the safety distance between two sides is not enough, an insulating shielding facility is added at the conducting wire position of the two sides;
the No. 3.5 electrician, the No. 1 electrician and the No. 2 electrician are matched to remove the temporary insulating cross arm and the insulating support rod;
4. fixing the linear lead in sections;
4.1, No. 1 electricians and No. 2 electricians are matched to connect the insulated drainage wires to two sides of the middle phase lead;
4.2, No. 1 electrician and No. 2 electrician respectively tighten the middle phase conductor on the strain clamp of the strain insulator strings at two sides of the middle phase by using the insulating tightener;
4.3, No. 1 electricians and No. 2 electricians are matched with two sides of the middle-phase tightened wire to install backup protection ropes;
4.4 and 2 electricians respectively measure the current on the middle phase lead and the temporary drainage lead by using a clamp-type ammeter;
4.5, No. 1 electrician and No. 2 electrician cooperate to cut off the middle part of the middle phase conductor by using an insulating bolt cutter;
4.6, No. 1 electrician and No. 2 electrician respectively fix the end part of the disconnected middle phase conductor in the strain clamp;
4.7, electrician No. 1 and electrician No. 2 remove the back-up protection rope and the tightener on the middle phase wire respectively;
4.8, No. 1 electrician and No. 2 electrician respectively install insulating shielding facilities to the neutral phase insulator string, the strain clamp and the lead;
fixing the other two-side phase conductors in the strain insulator string strain clamp at two sides by a No. 4.9 electrician, a No. 1 electrician and a No. 2 electrician according to the same steps of 4.1-4.8 respectively;
4.10, No. 1 electrician and No. 2 electrician adopt insulated wires to respectively connect the wires on the two sides of the cut-off;
5. removing the insulation shielding facility and the insulation equipment;
no. 5.1 and No. 2 electricians adopt a clamp-type ammeter to respectively measure the current on the connecting lead and the temporary insulating drainage wire, and whether part of the current is transferred to the lead or not;
the No. 5.2 electrician, the No. 1 electrician and the No. 2 electrician respectively remove the temporary insulating drainage wire chucks on the two sides;
5.3, dismantling the cross arm insulating shielding cover and the electric pole end insulating cover;
5.4, dismantling insulation shielding facilities on the insulator strings and the wires on two sides of the two sides;
5.5, dismantling insulator strings and insulating shielding facilities on the lead wires on two sides of the middle phase;
5.6, electricians No. 1 and electricians No. 2 leave the insulated fence;
5.7, dismantling the insulating fence, the insulating support and the metal bracket;
and 5.8, finishing the work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011642671.XA CN112636251B (en) | 2020-12-31 | 2020-12-31 | Method for changing 10kV straight pole into sectional pole in live mode |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011642671.XA CN112636251B (en) | 2020-12-31 | 2020-12-31 | Method for changing 10kV straight pole into sectional pole in live mode |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112636251A CN112636251A (en) | 2021-04-09 |
| CN112636251B true CN112636251B (en) | 2022-07-19 |
Family
ID=75290533
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011642671.XA Active CN112636251B (en) | 2020-12-31 | 2020-12-31 | Method for changing 10kV straight pole into sectional pole in live mode |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112636251B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114374170A (en) * | 2021-11-29 | 2022-04-19 | 国网浙江省电力有限公司金华供电公司 | Method for changing straight pole into strain pole and additionally installing switch on 10kV overhead line |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201408943Y (en) * | 2009-05-15 | 2010-02-17 | 上海市南电力工程有限公司 | Insulated shielding cover external member for 10kV lightning protection column isolator |
| CN103618245A (en) * | 2013-11-08 | 2014-03-05 | 国家电网公司 | Electrified strain opening operation method on distribution network |
| CN111564787A (en) * | 2020-05-12 | 2020-08-21 | 国网上海市电力公司 | Distribution network uninterrupted operation insulation shielding tool and insulation shielding method |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101888073A (en) * | 2009-05-15 | 2010-11-17 | 上海市南电力工程有限公司 | On-load opened and segmented operating method of 10kV line |
| KR101394095B1 (en) * | 2014-03-19 | 2014-05-14 | 운장전력 주식회사 | Wiring system using overhead earth wire combined with neutral line |
| CN104283152A (en) * | 2014-10-08 | 2015-01-14 | 国家电网公司 | Self-lifting rotary insulation cage |
| CN204130988U (en) * | 2014-10-29 | 2015-01-28 | 国网山东高唐县供电公司 | Novel 10 KV hot-line work insulated platforms |
| CN108155601A (en) * | 2018-01-08 | 2018-06-12 | 国网辽宁省电力有限公司鞍山供电公司 | A kind of method that on-load straight line pole changes tension-resistant rod |
| CN110880712A (en) * | 2019-11-22 | 2020-03-13 | 国网上海市电力公司 | Double-cross-arm insulation shielding cover |
| CN210927020U (en) * | 2019-12-10 | 2020-07-03 | 上海浦东新区汇总贸易有限公司 | Double cross arm insulating cover |
-
2020
- 2020-12-31 CN CN202011642671.XA patent/CN112636251B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201408943Y (en) * | 2009-05-15 | 2010-02-17 | 上海市南电力工程有限公司 | Insulated shielding cover external member for 10kV lightning protection column isolator |
| CN103618245A (en) * | 2013-11-08 | 2014-03-05 | 国家电网公司 | Electrified strain opening operation method on distribution network |
| CN111564787A (en) * | 2020-05-12 | 2020-08-21 | 国网上海市电力公司 | Distribution network uninterrupted operation insulation shielding tool and insulation shielding method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112636251A (en) | 2021-04-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1724892B1 (en) | Live conductor stringing and splicing methods | |
| CN102136693B (en) | Method and device for realizing long-distance equal electric potential access of winch hanging basket guide rail | |
| WO2015114336A2 (en) | Jumper insulator | |
| CN112636251B (en) | Method for changing 10kV straight pole into sectional pole in live mode | |
| US8508081B2 (en) | Live conductor stringing and splicing method and apparatus | |
| CN204754412U (en) | Same terminal pole of two telegram in reply cables at present of unilateral cross arm | |
| JP2004080923A (en) | Branch connection structure and its construction method for power transmission branched steel tower | |
| EP1727251A2 (en) | Live conductor stringing and splicing method and appartus | |
| RU2817512C1 (en) | Method of maintenance of strings of insulators of power transmission line, which is under voltage | |
| SU1675988A1 (en) | Method for replacement of insulators of energized aerial power line | |
| CN113782994A (en) | Multi-position grounding device for overhead cable | |
| CN117895410A (en) | Device and method for cable under tension rod in power line | |
| Lee | Transmission system of the Southern power company | |
| WO2016128619A1 (en) | Arrangement for protecting power line |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |