CN111181066B - Construction method of net sealing protection device of three-phase two-split conductor - Google Patents
Construction method of net sealing protection device of three-phase two-split conductor Download PDFInfo
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- CN111181066B CN111181066B CN202010067201.9A CN202010067201A CN111181066B CN 111181066 B CN111181066 B CN 111181066B CN 202010067201 A CN202010067201 A CN 202010067201A CN 111181066 B CN111181066 B CN 111181066B
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- 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
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- 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
- H02G1/04—Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables for mounting or stretching
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Abstract
The application discloses method of setting up of block protection device of two split conductors of three-phase includes: respectively placing a first left-phase old lead, a second left-phase old lead, a first middle-phase old lead, a second middle-phase old lead, a first right-phase old lead and a second right-phase old lead into a placing groove of a pay-off tackle from left to right, and fixing a plurality of net sealing protection devices on the first left-phase old lead and the second right-phase old lead; respectively replacing a second left-phase old lead, a first middle-phase old lead, a second middle-phase old lead and a first right-phase old lead with a first left-phase new lead, a first middle-phase new lead, a second middle-phase new lead and a first right-phase new lead; exchanging the first left-phase old lead and the first left-phase new lead, and exchanging the second right-phase old lead and the first right-phase new lead; and fixing the net sealing protection device on the first left-phase new lead and the first right-phase new lead to complete the construction of the net sealing protection device. The technical problem that the net sealing protection device is difficult to build when the terrain is uneven is solved.
Description
Technical Field
The application belongs to the technical field of power grid equipment, and particularly relates to a building method of a network sealing protection device of a three-phase binary-split conductor.
Background
The existing power grid has a three-phase two-split conductor, which is generally divided into three phases, specifically, a left-phase two-split conductor (called a left-phase conductor for short), a middle-phase two-split conductor (called a middle-phase conductor for short) and a right-phase two-split conductor (called a right-phase conductor for short); the left phase split conductor, the middle phase split conductor and the right phase split conductor are generally distributed on the same level of the tower.
The condition of ageing or damage can appear in the two split wire of three-phase, and the three-phase two split wire that appears ageing or damage can form bad wire, when the bad wire appears, needs to change bad wire to guarantee electric power normal delivery.
Because bad wire stridees across the ground object, in order to prevent that bad wire from dropping and smashing the ground object at the in-process of changing, need build the block net protection device in the top of ground object to protect the ground object. However, when the terrain is uneven, the block protection device is difficult to build.
Disclosure of Invention
In view of this, the application provides a method for building a three-phase two-split conductor net sealing protection device, and solves the technical problem that when the terrain is uneven, the net sealing protection device is difficult to build.
The application provides a method for building a net sealing protection device of a three-phase two-split conductor, which comprises the following steps: s1, respectively placing a first left-phase old lead, a second left-phase old lead, a first middle-phase old lead, a second middle-phase old lead, a first right-phase old lead and a second right-phase old lead of the three-phase binary split lead into a placing groove of a pay-off tackle from left to right, wherein the first left-phase old lead, the second left-phase old lead, the first middle-phase old lead, the second middle-phase old lead, the first right-phase old lead and the second right-phase old lead are distributed from left to right;
s2, fixing the first ends of the plurality of net sealing protection devices on the first left-phase old lead and fixing the second ends of the plurality of net sealing protection devices on the second right-phase old lead;
s3, replacing the second left phase old lead, the first middle phase old lead, the second middle phase old lead and the first right phase old lead with the first left phase new lead, the first middle phase new lead, the second middle phase new lead and the first right phase new lead, respectively;
s4, exchanging the first left-phase old lead and the first left-phase new lead, and exchanging the second right-phase old lead and the first right-phase new lead;
s5, fixing the first ends of the plurality of net sealing protection devices on the exchanged first left-phase new lead, and fixing the second ends of the plurality of net sealing protection devices on the exchanged first right-phase new lead to complete the construction of the net sealing protection devices.
Alternatively,
before the step S1, the method further includes:
and determining the length of the net sealing protection device according to the sag of the three-phase two-split conductor so as to ensure that the three-phase two-split conductor is positioned in the range of the net sealing protection device.
Alternatively,
before the step S2, the method further includes:
and arranging flexible parts on the first left-phase old lead and the second right-phase old lead.
Alternatively,
step S5 specifically includes:
s51, removing the screen protection devices of the first left-phase old lead and the second right-phase old lead;
and S52, fixing a plurality of net sealing protection devices on the exchanged first left-phase new lead and the exchanged first right-phase new lead at intervals.
Alternatively,
the step S3 specifically includes:
s31, after the second left-phase old lead is connected with the first left-phase new lead, pulling the second left-phase old lead;
s32, after the first middle-phase old lead wire is connected with a first middle-phase new lead wire, pulling the first middle-phase old lead wire;
s33, after the second middle-phase old lead and the second middle-phase new lead are connected, pulling the second middle-phase old lead;
and S34, after the first right-phase old lead is connected with the first right-phase new lead, pulling the first right-phase old lead.
Alternatively,
before S1, the method further includes:
and fixing an annular protection rope on a tower for fixing the three-phase two-split conductor, wherein the space surrounded by the annular protection rope is penetrated by the three-phase two-split conductor.
Alternatively,
after the step S5, the method further includes:
and S6, pre-fixing the first left-phase new lead, the first middle-phase new lead, the second middle-phase new lead and the first right-phase new lead on the tower.
Alternatively,
after the step S6, the method further includes:
and S7, fixing the second left-phase new lead and the second right-phase new lead on an insulator string on the tower.
Alternatively,
after the step S6, the method further includes:
and S8, removing a plurality of the screen protection devices from the first left-phase new lead and the first right-phase new lead.
Alternatively,
after the step S6, the method further includes:
and replacing the first left-phase old lead with a second left-phase new lead, and replacing the second right-phase old lead with a second right-phase new lead.
According to the technical scheme, the embodiment of the application has the following advantages:
according to the method, a first left-phase old lead, a second left-phase old lead, a first middle-phase old lead, a second middle-phase old lead, a first right-phase old lead and a second right-phase old lead of a three-phase binary-split lead are respectively placed into a placing groove of a pay-off tackle from left to right, and then two ends of a plurality of net sealing protection devices are respectively fixed on the first left-phase old lead and the second right-phase old lead to complete first building of the net sealing protection devices; after a second left-phase old lead, a first middle-phase old lead, a second middle-phase new lead and a first right-phase new lead are respectively replaced by a first left-phase new lead, a first middle-phase old lead, a second middle-phase old lead and a first right-phase old lead, the first left-phase old lead and the first left-phase new lead are exchanged, the second right-phase old lead and the first right-phase new lead are exchanged, and a plurality of net sealing protection devices are fixed on the exchanged first left-phase new lead and the exchanged first right-phase new lead at intervals to finally complete the construction of the net sealing protection devices.
Drawings
Fig. 1 is a schematic flow chart of a first embodiment of a building method of a net sealing protection device for a three-phase two-split conductor in the application;
fig. 2 is a schematic flow chart of a second embodiment of a method for constructing a blocking protection device for a three-phase two-split conductor according to the present application;
fig. 3 is a schematic diagram of a first state of a three-phase two-split conductor in an application example of the present application;
FIG. 4 is a schematic diagram of a second state of a three-phase two-split conductor in an application example of the present application;
fig. 5 is a third state diagram of a three-phase two-split conductor in an application example of the present application.
Detailed Description
The embodiment of the application provides a method for building a net sealing protection device of a three-phase two-split conductor, and solves the technical problem of building the net sealing protection device when the terrain is uneven.
In order to make the technical solutions of the present application better understood, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In order to facilitate understanding, please refer to fig. 1, where fig. 1 is a schematic flow chart of a first embodiment of a building method of a three-phase two-split conductor blocking protection device in an embodiment of the present application, and as shown in fig. 1, the method specifically includes:
It should be noted that the first left-phase old conductor, the second left-phase old conductor, the first middle-phase old conductor, the second middle-phase old conductor, the first right-phase old conductor, and the second right-phase old conductor are distributed from left to right.
It should be noted that the number of the pay-off pulleys may be one, two or three. It can be understood that when the paying-off tackle is one, the number of the placing grooves is at least six; when the number of the pay-off pulleys is two, the total number of the placing grooves of the two pay-off pulleys is at least six, the first pay-off pulley can be two placing grooves, the second pay-off pulley is four placing grooves, or the first pay-off pulley and the second pay-off pulley are three placing grooves; when the number of the paying-off pulleys is three, the total number of the placement grooves of the three paying-off pulleys is at least six. The setting can be made as required by those skilled in the art.
When the number of the paying-off pulleys is three and the placing grooves of each paying-off pulley are two, the first paying-off pulley, the second paying-off pulley and the third paying-off pulley are arranged from left to right, and then six grooves in the three paying-off pulleys are also arranged from left to right in sequence.
And 102, fixing the first ends of the plurality of net sealing protection devices on a first left-phase old lead and fixing the second ends of the plurality of net sealing protection devices on a second right-phase old lead.
In this embodiment, the plurality of blocking protection devices are fixed to the first left-phase old conductor and the second right-phase old conductor at intervals, the intervals may be two meters, three meters, or four meters, and those skilled in the art can select the blocking protection devices according to needs.
Specifically, the blocking protection device in this embodiment is a rope, and when the lower spanning object is an insulator, the rope may be an insulating rope or a steel wire rope, and when the lower spanning object is a non-insulator, the rope is an insulating rope. When the rope is fixed, two ends of the rope are respectively fixed on the first left-phase old lead and the second right-phase old lead. The outer surface of the rope can be further provided with a flexible layer to prevent the rope from scratching the three-phase two-split conductor. It will be appreciated that the flexible layer may be a foam layer or a rubber layer, and may be provided as desired by those skilled in the art.
And 103, replacing the second left-phase old lead, the first middle-phase old lead, the second middle-phase old lead and the first right-phase old lead with the first left-phase new lead, the first middle-phase new lead, the second middle-phase new lead and the first right-phase new lead respectively.
It should be noted that, the second left-phase old lead, the first middle-phase old lead, the second middle-phase old lead, and the first right-phase old lead may be replaced sequentially, for example, the second left-phase old lead is replaced first; secondly, replacing the old first middle phase lead; thirdly, replacing the old second middle phase lead; and finally, replacing the first right-phase old lead.
It is to be understood that the replacement of the second left phase old conductor, the first middle phase old conductor, the second middle phase old conductor and the first right phase old conductor may also be performed simultaneously.
The execution sequence and the execution main body of the replacement of the three-phase two-split conductor can be flexibly set by those skilled in the art, and are not particularly limited herein.
It should be noted that the replaced first left-phase new conductor, first middle-phase new conductor, second middle-phase new conductor and first right-phase new conductor are laid on a cross arm of a tower for supporting the three-phase two-split conductor.
And 104, exchanging the first left-phase old lead and the first left-phase new lead, and exchanging the second right-phase old lead and the first right-phase new lead.
When the unwrapping wire coaster that sets up is three, when having two standing grooves on the three unwrapping wire coaster respectively, and exchange the back with the old wire of first left side looks and the new wire of first left side looks, the old wire of first left side looks is located this unwrapping wire coaster that looks place and is close to the standing groove on one side of well looks wire in, and the new wire of first left side looks is located this unwrapping wire coaster that looks place and keeps away from the standing groove on one side of well looks wire.
It can be understood that, for the state after the second right-phase old conductor and the first right-phase new conductor are exchanged is similar to the state after the first left-phase old conductor and the first left-phase new conductor are exchanged, reference may be specifically made to the above description, and details are not described here again.
And 105, fixing the first ends of the plurality of net sealing protection devices on the exchanged first left phase new lead, and fixing the second ends of the plurality of net sealing protection devices on the exchanged first right phase new lead to complete the construction of the net sealing protection devices.
In this embodiment, fix the both ends of protection device for screen sealing on the new wire of the first left phase and the new wire of the first right phase after exchanging, utilize the new wire of the first left phase and the new wire of the first right phase that finish changing to act as the carrier cable of protection device for screen sealing, finally accomplish the construction of protection device for screen sealing.
In the embodiment, a first left-phase old lead, a second left-phase old lead, a first middle-phase old lead, a second middle-phase old lead, a first right-phase old lead and a second right-phase old lead of a three-phase binary-split lead are respectively placed into a placing groove of a pay-off tackle from left to right, and then two ends of a plurality of net sealing protection devices are respectively fixed on the first left-phase old lead and the second right-phase old lead to complete the construction of a first net sealing protection device; after a second left-phase old lead, a first middle-phase old lead, a second middle-phase new lead and a first right-phase new lead are respectively replaced by a first left-phase new lead, a first middle-phase old lead, a second middle-phase old lead and a first right-phase old lead, the first left-phase old lead and the first left-phase new lead are exchanged, the second right-phase old lead and the first right-phase new lead are exchanged, a plurality of net sealing protection devices are fixed on the exchanged first left-phase new lead and the exchanged first right-phase new lead at intervals, and finally the net sealing protection devices are built.
The first embodiment of the method for building the three-phase two-split conductor network sealing protection device provided by the embodiment of the application also provides a second embodiment of the method for building the three-phase two-split conductor network sealing protection device provided by the embodiment of the application, and the second embodiment describes in detail the method for building the three-phase two-split conductor network sealing protection device.
Referring to fig. 2, fig. 2 is a schematic flow chart of a second embodiment of a method for building a three-phase two-split conductor network sealing protection device in an embodiment of the present application, and the method for building a two-phase three-phase two-split conductor network sealing protection device in the embodiment includes:
It should be noted that.
It should be noted that the first left-phase old conductor, the second left-phase old conductor, the first middle-phase old conductor, the second middle-phase old conductor, the first right-phase old conductor, and the second right-phase old conductor are distributed from left to right.
And 203, fixing the first ends of the plurality of net sealing protection devices on the first left-phase old lead and fixing the second ends of the plurality of net sealing protection devices on the second right-phase old lead.
And step 204, replacing the second left-phase old lead, the first middle-phase old lead, the second middle-phase old lead and the first right-phase old lead with the first left-phase new lead, the first middle-phase new lead, the second middle-phase new lead and the first right-phase new lead respectively.
It should be noted that, in the process of replacing the second left-phase old conductor with the first left-phase new conductor, after connecting the second left-phase old conductor with the first left-phase new conductor, the second left-phase old conductor is pulled to be spread at the original spreading position of the second left-phase old conductor.
It is to be understood that the descriptions of the first middle phase new lead replacement, the second middle phase new lead replacement, and the first right phase new lead replacement for the first middle phase old lead, the second middle phase old lead, and the first right phase old lead are similar to the descriptions of the first left phase new lead replacement for the second left phase old lead, and the detailed descriptions refer to the above descriptions and are not repeated herein.
And 205, exchanging the first left-phase old conductor and the first left-phase new conductor, and exchanging the second right-phase old conductor and the first right-phase new conductor.
It should be noted that, after the first left-phase old conductor and the first left-phase new conductor are exchanged, the first left-phase new conductor is located on the side of the pay-off tackle far away from the middle-phase conductor.
And step 206, after removing the blocking protection devices of the first left-phase old lead and the second right-phase old lead, fixing a plurality of blocking protection devices on the exchanged first left-phase new lead and first right-phase new lead at intervals.
Before the net sealing protection device is fixed on the first left-phase new lead and the first right-phase new lead, a flexible piece is arranged on the first left-phase new lead and the second right-phase new lead to prevent the net sealing protection device from scratching the first left-phase new lead and the second right-phase new lead.
And step 207, fixing an annular protection rope on a tower for fixing the three-phase two-split conductor.
It should be noted that the annular protection rope can be fixed on a cross arm of a tower.
In this embodiment, the space that the annular protection rope surrounds is passed by the two split conductors of three-phase, thereby when the fracture of block protection device or damage can not protect two split conductors of three-phase, the annular protection rope can carry out secondary protection to two split conductors of three-phase.
And 208, fixing the first ends of the plurality of net sealing protection devices on the exchanged first left phase new lead and fixing the second ends of the plurality of net sealing protection devices on the exchanged first right phase new lead so as to complete the construction of the net sealing protection devices.
It should be noted that the first left-phase new lead and the first right-phase new lead of the fixed blocking protection device are both located on one side of the pay-off tackle away from the middle-phase lead, so as to ensure that the first left-phase old lead and the second right-phase old lead are within the range of the blocking protection device.
And 209, pre-fixing the first left-phase new conductor, the first middle-phase new conductor, the second middle-phase new conductor and the first right-phase new conductor on the tower.
It can be understood that the pre-fixing of the first left-phase new lead, the first middle-phase new lead, the second middle-phase new lead and the first right-phase new lead which are just replaced is to prevent the first left-phase new lead, the first middle-phase new lead, the second middle-phase new lead and the first right-phase new lead from being collided when the first left-phase old lead and the second right-phase old lead are pulled and expanded in the process of replacing the first left-phase old lead and the second right-phase old lead.
It should be noted that the replacement of the first left-phase new lead and the second right-phase new lead is similar to that in step 204, and specific reference is made to the description in step 204, which is not repeated herein.
And step 211, fixing the second left-phase new lead and the second right-phase new lead on an insulator string on the tower.
In the embodiment, a first left-phase old lead, a second left-phase old lead, a first middle-phase old lead, a second middle-phase old lead, a first right-phase old lead and a second right-phase old lead of a three-phase binary-split lead are respectively placed into a placing groove of a pay-off tackle from left to right, and then two ends of a plurality of net sealing protection devices are respectively fixed on the first left-phase old lead and the second right-phase old lead to complete the first building of the net sealing protection devices; after a second left-phase old lead, a first middle-phase old lead, a second middle-phase new lead and a first right-phase new lead are respectively replaced by a first left-phase new lead, a first middle-phase old lead, a second middle-phase old lead and a first right-phase old lead, the first left-phase old lead and the first left-phase new lead are exchanged, the second right-phase old lead and the first right-phase new lead are exchanged, and a plurality of net sealing protection devices are fixed on the exchanged first left-phase new lead and the exchanged first right-phase new lead at intervals to finally complete the construction of the net sealing protection devices.
In the second embodiment of the method for building a three-phase two-split conductor net-sealing protection device according to the embodiment of the present application, an application example of the method for building a three-phase two-split conductor net-sealing protection device is also provided in the following embodiment of the present application, and please refer to fig. 3 to 5 specifically.
In this application example, the first left-phase old conductor, the second left-phase old conductor, the first middle-phase old conductor, the second middle-phase old conductor, the first right-phase old conductor, and the second right-phase old conductor in the three-phase binary split conductor are respectively: a1, A2, B1, B2, C1 and C2. The first left phase new lead, the second left phase new lead, the first middle phase new lead, the second middle phase new lead, the first right phase new lead and the second right phase new lead are respectively: a1 ', A2', B1 ', B2', C1 'and C2', wherein the construction of the blocking protection device for the three-phase two-split conductor comprises the following steps:
(1) respectively placing A1, A2, B1, B2, C1 and C2 into a placing groove of a stringing tackle, and fixing a plurality of net sealing protection devices on A1 and C2 at intervals, wherein the state of the three-phase two-section split conductor is shown in FIG. 3;
(2) a2, B1, B2 and C1 are replaced by A1 ', B1', B2 'and C1', and the state of the replaced three-phase two-section split conductor is shown in FIG. 4;
(3) exchanging A1 and A1 ', exchanging C2 and C1', fixing a plurality of net sealing protection devices on A1 'and C1', and completing the second building of the net sealing protection devices, wherein the state of the three-phase two-section split conductor is shown in FIG. 5.
The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions in the embodiments of the present application.
Claims (10)
1. A building method of a net sealing protection device of a three-phase two-split conductor is characterized by comprising the following steps:
s1, respectively placing a first left-phase old lead, a second left-phase old lead, a first middle-phase old lead, a second middle-phase old lead, a first right-phase old lead and a second right-phase old lead of the three-phase binary split lead into a placing groove of a pay-off tackle from left to right, wherein the first left-phase old lead, the second left-phase old lead, the first middle-phase old lead, the second middle-phase old lead, the first right-phase old lead and the second right-phase old lead are distributed from left to right;
s2, fixing the first ends of at least two net sealing protection devices on the first left-phase old lead and fixing the second ends of the at least two net sealing protection devices on the second right-phase old lead;
s3, replacing the second left phase old lead, the first middle phase old lead, the second middle phase old lead and the first right phase old lead with the first left phase new lead, the first middle phase new lead, the second middle phase new lead and the first right phase new lead, respectively;
s4, exchanging the first left-phase old lead and the first left-phase new lead, and exchanging the second right-phase old lead and the first right-phase new lead;
s5, fixing the first ends of at least two net sealing protection devices on the exchanged first left-phase new lead, and fixing the second ends of the at least two net sealing protection devices on the exchanged first right-phase new lead to complete the building of the net sealing protection devices.
2. The method for building a three-phase two-split conductor blocking protection device according to claim 1, wherein before the step S1, the method further comprises:
and determining the length of the net sealing protection device according to the sag of the three-phase two-split conductor so as to ensure that the three-phase two-split conductor is positioned in the range of the net sealing protection device.
3. The method for building a three-phase two-split conductor blocking protection device according to claim 1, wherein before the step S2, the method further comprises:
and arranging flexible parts on the first left-phase old lead and the second right-phase old lead.
4. The building method of the three-phase two-split conductor blocking protection device according to claim 1, wherein the step S5 specifically includes:
s51, removing the screen protection devices of the first left-phase old lead and the second right-phase old lead;
and S52, fixing at least two net sealing protection devices on the exchanged first left-phase new lead and the first right-phase new lead at intervals.
5. The method for building a three-phase two-split conductor blocking protection device according to claim 1, wherein the step S3 specifically includes:
s31, after the second left-phase old lead is connected with the first left-phase new lead, pulling the second left-phase old lead;
s32, after the first middle-phase old lead wire is connected with a first middle-phase new lead wire, pulling the first middle-phase old lead wire;
s33, after the second middle-phase old lead and the second middle-phase new lead are connected, pulling the second middle-phase old lead;
and S34, after the first right-phase old lead is connected with the first right-phase new lead, pulling the first right-phase old lead.
6. The method for building a three-phase two-split conductor blocking protection device according to claim 1, wherein before S1, the method further comprises:
and fixing an annular protection rope on a tower for fixing the three-phase two-split conductor, wherein the space surrounded by the annular protection rope is penetrated by the three-phase two-split conductor.
7. The method for building a three-phase two-split conductor blocking protection device according to claim 6, wherein after the step S5, the method further comprises:
and S6, pre-fixing the first left-phase new lead, the first middle-phase new lead, the second middle-phase new lead and the first right-phase new lead on the tower.
8. The method for building a three-phase two-split conductor blocking protection device according to claim 7, wherein after the step S6, the method further comprises:
and S7, fixing the second left-phase new lead and the second right-phase new lead on the insulator string on the tower.
9. The method for building a three-phase two-split conductor blocking protection device according to claim 7, wherein after the step S6, the method further comprises:
and S8, removing at least two screen protection devices from the first left-phase new lead and the first right-phase new lead.
10. The method for building a three-phase two-split conductor blocking protection device according to claim 7, wherein after the step S6, the method further comprises:
and replacing the first left-phase old lead with a second left-phase new lead, and replacing the second right-phase old lead with a second right-phase new lead.
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| CN202010067201.9A CN111181066B (en) | 2020-01-20 | 2020-01-20 | Construction method of net sealing protection device of three-phase two-split conductor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010067201.9A CN111181066B (en) | 2020-01-20 | 2020-01-20 | Construction method of net sealing protection device of three-phase two-split conductor |
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| CN111181066B true CN111181066B (en) | 2021-01-26 |
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| CN105591318B (en) * | 2015-12-30 | 2018-04-03 | 国家电网公司 | A kind of block method of U-shaped net |
| CN105790156A (en) * | 2016-04-11 | 2016-07-20 | 天津送变电工程公司 | Transmission line construction new net-blocking construction method |
| CN205595695U (en) * | 2016-04-22 | 2016-09-21 | 徐州送变电有限公司 | High altitude block system |
| CN110401137B (en) * | 2019-08-13 | 2020-11-03 | 中国电建集团重庆工程有限公司 | Method for replacing transmission line lead |
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2020
- 2020-01-20 CN CN202010067201.9A patent/CN111181066B/en active Active
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