CN113937653A - Distribution line migration method - Google Patents
Distribution line migration method Download PDFInfo
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- CN113937653A CN113937653A CN202111112355.6A CN202111112355A CN113937653A CN 113937653 A CN113937653 A CN 113937653A CN 202111112355 A CN202111112355 A CN 202111112355A CN 113937653 A CN113937653 A CN 113937653A
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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
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J3/00—Circuit arrangements for ac mains or ac distribution networks
- H02J3/007—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources
- H02J3/0075—Arrangements for selectively connecting the load or loads to one or several among a plurality of power lines or power sources for providing alternative feeding paths between load and source according to economic or energy efficiency considerations, e.g. economic dispatch
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Abstract
The application relates to a distribution line migration method. The method comprises the following steps: installing towers on the new distribution line, connecting all the towers on the new distribution line by using a conducting wire, determining a target operation tower according to the distribution line section to be migrated, and electrically connecting the small-size side of the target operation tower with the large-size side of the distribution line section to be migrated; connecting the uninterruptible power supply to the large-size side of the target operation tower, so that the uninterruptible power supply supplies power to the distribution line on the large-size side of the target operation tower; switching and connecting a connecting wire of the large-size side of the target operation tower and the first tower to the large-size side of a second tower in the new distribution line, and connecting a power supply path of the new distribution line; and finally, disconnecting the uninterruptible power supply to the power distribution line on the large-size side of the target operation tower. The power supply of the power distribution line user at the large-size side of the target operation tower during switching can be ensured by the power distribution line migration method, and the uninterrupted operation in the power distribution line migration process is realized.
Description
Technical Field
The application relates to the technical field of distribution line migration, in particular to a distribution line migration method.
Background
With the rapid development of economy, the living standard of people is improved, and the demand of electricity utilization is continuously increased, so that the conventional power system is often required to be reconstructed or expanded. However, in the process of modifying or expanding the power system, the distribution lines often need to be migrated, however, the conventional distribution line migration method causes problems of long-term or short-term power outage and the like, which not only affects the electricity consumption experience of users, but also brings many disadvantages to economic production.
Disclosure of Invention
Therefore, it is necessary to provide a distribution line migration method capable of performing uninterrupted operation for solving the technical problem of power outage caused by the adoption of the conventional distribution line migration method in the process of transformation or extension of an electric system.
A method of distribution line migration, the method comprising:
installing towers on the new distribution line, and sequentially connecting all the towers on the new distribution line by using wires, wherein the new distribution line is determined according to a distribution line section to be migrated, and the distribution line section to be migrated is determined according to the business expansion requirement;
determining a target operation tower according to the power distribution line section to be migrated, wherein the small-size side of the target operation tower is electrically connected with the large-size side of the power distribution line section to be migrated;
connecting the uninterruptible power supply to the large-size side of the target operation tower, so that the uninterruptible power supply supplies power to the distribution line on the large-size side of the target operation tower;
switching and connecting a connecting wire of the large-size side of the target operation tower and the first tower to the large-size side of a second tower in the new distribution line, and connecting a power supply path of the new distribution line; the first tower is a tower on the large-size side of the power distribution line section to be migrated; the second tower is a tower on the large-size side of the new distribution line;
and disconnecting the uninterruptible power supply to the distribution line on the large-size side of the target operation tower.
In one embodiment, the uninterruptible power supply is a power generation car, and the step of connecting the uninterruptible power supply to the large-size side of the target operation tower includes:
and connecting the output end of the power generation car to the large-size side of the target operation tower, so that the power generation car supplies power to the distribution line on the large-size side of the target operation tower.
In one embodiment, the step of connecting the output end of the power generation car to the large-size side of the target operation tower so that the power generation car supplies power to the distribution line on the large-size side of the target operation tower includes:
connecting the output end of the power generation car with one end of a first load type isolating switch in a disconnected state;
connecting the other end of the first load type isolating switch with the large-size side of the target operation tower;
the first load isolator is closed.
In one embodiment, the uninterruptible power supply is a power supply network connected to the small-size side of the power distribution line section to be migrated; the step of connecting the uninterruptible power supply to the large-size side of the target operation tower comprises the following steps:
one end of the bypass is connected with the small-size side of the first tower, the other end of the bypass is connected with the large-size side of the target operation tower, and a power supply network connected to the small-size side of the power distribution line section to be migrated supplies power to the power distribution line on the large-size side of the target operation tower.
In one embodiment, the bypass comprises a second load-type isolation switch in an open state; the method comprises the following steps of connecting one end of a bypass with the small-size side of a first tower, connecting the other end of the bypass with the large-size side of a target operation tower, and enabling a power supply network connected with the small-size side of a to-be-migrated power distribution line section to supply power for a power distribution line on the large-size side of the target operation tower:
connecting one end of a second load type isolating switch with the small-size side of the first tower, and connecting the other end of the second load type isolating switch with the large-size side of the target operation tower;
and closing the second load type isolating switch.
In one embodiment, a third load type isolating switch in a closed state is connected in series between the large-size side of the first tower and the small-size side of the target operation tower;
after the step of connecting the uninterruptible power supply to the large-size side of the target operation tower, and before the step of switching and connecting the connecting lead of the large-size side of the target operation tower and the first tower to the large-size side of the second tower in the new distribution line, the method further comprises the following steps:
and opening the third load type isolating switch.
In one embodiment, a fourth load type disconnecting switch in an off state is connected in series between the second tower and the tower adjacent to the small-size side of the second tower; the step of switching on the power supply path of the new distribution line comprises the steps of:
and closing the fourth load type isolating switch.
In one embodiment, the step of disconnecting the uninterruptible power supply from the distribution line on the large-size side of the target operation tower includes:
disconnecting the first load type isolating switch;
and (4) removing the power generation car from the large-size side of the target operation tower.
In one embodiment, the step of disconnecting the uninterruptible power supply from the distribution line on the large-size side of the target operation tower includes:
disconnecting the second load type isolating switch;
and respectively detaching the bypasses from the small-size side of the first tower and the large-size side of the target operation tower.
In one embodiment, the consolidation mode and lead sag of the target operation tower are adjusted.
The distribution line migration method comprises the steps of firstly installing pole towers on a new distribution line, sequentially connecting all pole towers on the new distribution line by using conducting wires, then determining a target operation pole tower according to the range of the distribution line to be migrated, connecting a uninterruptible power supply to the large-size side of the target operation pole tower to supply power to the large-size side distribution line of the target operation pole tower, finally switching and connecting the conducting wire between the target operation pole tower and a first pole tower adjacent to the small-size side of the target operation pole tower to the large-size side of a second pole tower in the new distribution line, connecting the target operation pole tower with the second pole tower to complete the distribution line migration, enabling a power supply network connected to the small-size side of the new distribution line to supply power to a distribution line user on the large-size side of the target operation pole tower, and providing a supply power supply for the uninterruptible power supply during the switching process, so as to ensure the power supply to supply of the distribution line user on the large-size side of the target operation pole tower during the switching, the pole tower is used as an implementation means, and uninterrupted operation in the distribution line migration process is achieved by utilizing the difference between the small-size side and the large-size side of the pole tower.
Drawings
FIG. 1 is a schematic flow chart illustrating a distribution line migration method according to an embodiment;
FIG. 2 is a schematic flow chart diagram illustrating the steps of a distribution line migration method according to another embodiment;
FIG. 3 is a schematic flow chart illustrating the steps for connecting the uninterruptible power supply to the large-size side of the target operation tower when a power generation car is used as the uninterruptible power supply in one embodiment;
FIG. 4 is a schematic flowchart illustrating a step of connecting a uninterruptible power supply to the large-size side of a target operation tower when the power supply network connected to the small-size side of a power distribution line segment to be migrated is used as the uninterruptible power supply in one embodiment;
FIG. 5 is a schematic flow chart illustrating the steps of disconnecting the uninterruptible power supply from the distribution line on the large-size side of the target tower when the generator car is used as the uninterruptible power supply in one embodiment;
FIG. 6 is a schematic flowchart of the steps of disconnecting the uninterruptible power supply from the distribution line on the large-size side of the target operation tower when the power supply network connected to the small-size side of the distribution line segment to be migrated is used as the uninterruptible power supply in one embodiment;
FIG. 7 is a field layout diagram of a distribution line migration method according to one embodiment;
fig. 8 is a field layout diagram of a distribution line migration method according to another embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.
In one embodiment, as shown in FIG. 1, a method of distribution line migration is provided, the method comprising the steps of:
and S100, installing towers on the new distribution line, and sequentially connecting the towers on the new distribution line through conducting wires.
The new distribution line is determined according to the distribution line section to be migrated, and the distribution line section to be migrated is determined according to the business expansion requirement. Business expansion refers to the development of new services related to power consumers. For example, when business expansion needs occur in a certain place, the original distribution line at the position cannot meet the business expansion needs, so that the business expansion needs are met by adopting a mode of migrating the original distribution line section and establishing a new distribution line. And determining a new distribution line according to the distribution line section to be migrated with the business expansion requirement of the original distribution line section, namely the line where the distribution line section to be migrated is located. And erecting pole towers on the new distribution line, sequentially connecting the pole towers on the new distribution line by using conducting wires, and adjusting the lead sag.
And S200, determining a target operation tower according to the power distribution line section to be migrated.
The small-size side of the target operation tower is electrically connected with the large-size side of the power distribution line section to be migrated. The purpose of determining the target operation tower is to divide the distribution line section to be migrated and the non-migrated distribution line. The small-size side of the target operation tower is electrically connected with the large-size side of the power distribution line section to be migrated, and the large-size side of the target operation tower is connected with the non-migrating power distribution line. In the process of power distribution line migration, continuous power supply of a user connected with a large-size side power distribution line of a target operation tower needs to be ensured.
And S300, connecting the uninterruptible power supply to the large-size side of the target operation tower, and enabling the uninterruptible power supply to supply power to the distribution line on the large-size side of the target operation tower.
Uninterrupted power source is as the supply source among the distribution lines migration process, is connected with target operation shaft tower large-size side distribution lines, and at the distribution lines migration in-process, the outage can take place for the distribution lines section of treating that the target operation shaft tower large-size side distribution lines supplied power earlier, consequently, adopts uninterrupted power source to replace and treat that the distribution lines section of treating connects the supply network and supply power for target operation shaft tower large-size side distribution lines to realize that target operation shaft tower large-size side distribution lines connects user's continuation power supply.
The uninterruptible power supply comprises a power generation car and a power supply network connected to the small-size side of the power distribution line section to be migrated. According to field operation conditions, such as operation space, bypass convenience and the like, a power generation car is selected to be used as an uninterruptible power supply in the migration process, or a power supply network connected to a small-size side of a power distribution line section to be migrated is selected to be used as the uninterruptible power supply in the migration process.
S500, the connecting lead of the large-size side of the target operation tower and the first tower is switched and connected to the large-size side of the second tower in the new distribution line, and a power supply path of the new distribution line is connected.
The first tower is a tower on the large-size side of the power distribution line section to be migrated; the second tower is a tower on the large-size side of the new distribution line.
After the new power distribution line is erected, the connecting conducting wire of the target operation tower and the large-size side of the first tower is switched and connected to the large-size side of the second tower in the new power distribution line, the new power distribution line is connected, and the new power distribution line is enabled to continue to supply power to the user connected with the power distribution line on the large-size side of the target operation tower.
In the process of switching the conducting wires, if a plurality of conducting wires to be transferred connected with the target operation tower exist, the conducting wires are transferred to the new distribution line phase by phase and are sequentially connected with the towers in the new distribution line.
And S700, disconnecting the uninterruptible power supply from the power distribution line on the large-size side of the target operation tower.
The method for transferring the distribution line comprises the steps of firstly installing pole towers on the new distribution line, sequentially connecting all the pole towers on the new distribution line by using conducting wires, then determining a target operation pole tower according to the range of the distribution line to be transferred, connecting a non-power-off power supply to the large-size side of the target operation pole tower to supply power to the distribution line on the large-size side of the target operation pole tower, selecting different non-power-off power supplies according to field conditions, finally switching and connecting the conducting wires between the target operation pole tower and a first pole tower adjacent to the small-size side of the target operation pole tower to the large-size side of a second pole tower in the new distribution line, connecting the target operation pole tower and the second pole tower to finish the transfer of the distribution line, enabling a power supply network connected to the small-size side of the new distribution line to supply power to a distribution line user on the large-size side of the target operation pole tower, and providing a supply power for the non-power supply due to the non-power supply in the switching process, the power supply of the power distribution line user on the large-size side of the target operation tower during switching can be guaranteed, the tower is used as an implementation means, the uninterrupted operation in the power distribution line migration process is achieved by utilizing the difference between the small-size side and the large-size side of the tower, and the power supply reliability is effectively improved.
As shown in fig. 2, in one embodiment, the step of connecting the uninterruptible power supply to the target operation tower, with the power generation car as the uninterruptible power supply, includes:
and S310, connecting the output end of the power generation car to the large-size side of the target operation tower, and enabling the power generation car to supply power for the distribution line on the large-size side of the target operation tower.
As shown in fig. 3, in one embodiment, the step of connecting the output end of the power generation car to the large-size side of the target operation tower so that the power generation car supplies power to the distribution line on the large-size side of the target operation tower comprises:
and S311, connecting the output end of the power generation car with one end of a first load type isolating switch in an off state.
And S312, connecting the other end of the first load type isolating switch with the large-size side of the target operation tower.
And S313, closing the first load type isolating switch.
Whether the power generation car supplies power to a user connected with the large-size side distribution line of the target operation tower can be controlled according to requirements by setting the first load type isolating switch to be turned on or off. In order to realize uninterrupted operation, before the distribution line is moved, the first load type isolating switch is closed, so that the power generation vehicle connected with one end of the first load type isolating switch supplies power to a user connected with the large-size side distribution line of the target operation tower. By executing the steps, the power generation car can be used as a power supply to continuously supply power to users connected with the power distribution line on the large-size side of the target operation tower in the power distribution line migration process, and uninterrupted operation can be achieved.
As shown in fig. 2, in one embodiment, the power supply network connected to the small-size side of the power distribution line section to be migrated is used as a non-outage power supply, and the step of connecting the non-outage power supply to the large-size side of the target operation tower comprises the following steps:
and S320, connecting one end of the bypass with the small-size side of the first tower, and connecting the other end of the bypass with the large-size side of the target operation tower, so that the power supply network connected to the small-size side of the power distribution line section to be migrated supplies power to the power distribution line on the large-size side of the target operation tower.
The power supply network connected to the small-size side of the power distribution line section to be migrated is connected with the power distribution line on the large-size side of the target operation tower through the bypass, so that the power supply network connected to the small-size side of the power distribution line section to be migrated bypasses the power distribution line section to be migrated, and power is directly supplied to a user connected to the power distribution line on the large-size side of the target operation tower.
In one embodiment, as shown in fig. 4, the bypass includes a second load-type isolation switch in an off state, one end of the bypass is connected to the small-size side of the first tower, and the other end of the bypass is connected to the large-size side of the target operation tower, so that the power supply network connected to the small-size side of the power distribution line section to be migrated supplies power to the power distribution line on the large-size side of the target operation tower, and the step of connecting the power distribution line to be migrated to the small-size side of the power distribution line section includes:
and S321, connecting one end of the second load type isolating switch with the small-size side of the first tower, and connecting the other end of the second load type isolating switch with the large-size side of the target operation tower.
And S322, closing the second load type isolating switch.
The second load type isolating switch is used for controlling whether a power supply network connected to the small-size side of the power distribution line section to be migrated directly supplies power to the power distribution line on the large-size side of the target operation tower. And in the transfer process of the distribution line, closing the second load type isolating switch to ensure that the power supply network connected to the small-size side of the distribution line section to be transferred directly supplies power to the distribution line on the large-size side of the target operation tower, and ensuring that a user connected to the distribution line on the large-size side of the target operation tower does not stop power supply in the transfer process.
As shown in fig. 2, in one embodiment, a third load-type isolation switch in a closed state is connected in series between the large-size side of the first tower and the small-size side of the target operation tower; after the step of connecting the uninterruptible power supply to the large-size side of the target operation tower, and before the step of switching and connecting the target operation tower and the connecting lead of the large-size side of the first tower to the large-size side of the second tower in the new distribution line, the method further comprises the following steps:
and S400, disconnecting the third load type isolating switch.
And after the uninterrupted power supply is adopted to supply power to the user connected with the large-size side distribution line of the target operation tower, the third load type isolating switch is disconnected to stop the power transmission of the user connected with the large-size side distribution line of the to-be-transferred distribution line section to the target operation tower. In addition, through setting up third load formula isolator, can make the wire between first shaft tower and target operation shaft tower uncharged to switching the connecting wire of target operation shaft tower and first shaft tower large-size side and being connected to the in-process of the large-size side of second shaft tower in new distribution line, guarantee constructor's personal safety.
As shown in fig. 2, in one embodiment, a fourth load-type disconnecting switch in an off state is connected in series between the second tower and the tower adjacent to the small-size side of the second tower; the step of switching on the supply path of the new distribution line comprises the steps of:
and S600, closing the fourth load type isolating switch.
The purpose of setting the fourth load type isolating switch is to disconnect the fourth load type for the switch in the process of switching and connecting the connecting lead of the large-size side of the target operation tower and the first tower to the large-size side of the second tower in a new distribution line, so that the second tower is not electrified, and the personal safety of constructors in the migration process is ensured.
As shown in fig. 5, in one embodiment, the step of disconnecting the uninterruptible power supply from the distribution line on the large-size side of the target operation tower comprises:
and S710, disconnecting the first load type isolating switch.
And S720, removing the power generation car from the large-size side of the target operation tower.
After the new distribution line is connected, the power supply is continuously supplied to the users connected with the distribution line on the large-size side of the target operation tower through the new distribution line, therefore, after the new distribution line is connected, the first load type isolating switch is disconnected, the power generation car stops supplying power to the users connected with the distribution line on the large-size side of the target operation tower, and in addition, the first load type isolating switch is arranged, so that the power generation car can be detached under the condition that the safety of constructors is guaranteed.
The step of removing the power generation car from the large-size side of the target operation tower further comprises the following steps:
and (4) the power generation vehicle exits from grid connection, the power generation vehicle drainage clamp is removed, and the power generation vehicle grid connection equipment is recovered.
In one embodiment, the power supply network connected with the power distribution line section to be migrated on the small-size side of the first tower comprises a fifth load type isolation switch in a closed state. By arranging the isolating switch at the position close to the power supply network, the working safety of the tower during dismantling can be ensured by disconnecting the isolating switch when the old line is dismantled.
As shown in fig. 6, in one embodiment, when the power supply network connected to the small-size side of the power distribution line section to be migrated is used as an uninterruptible power supply, the step of disconnecting the uninterruptible power supply from supplying power to the power distribution line on the large-size side of the target operation tower comprises the following steps:
and S730, disconnecting the second load type isolating switch.
And S740, respectively removing the bypass from the small-size side of the first tower and the large-size side of the target operation tower.
After the new distribution line is connected, the users connected with the distribution line on the large-size side of the target operation tower transmit power through the new distribution line, so that the second load type isolating switch is disconnected firstly, and the power supply network connected with the small-size side of the distribution line section to be migrated stops transmitting power for the users connected with the distribution line on the large-size side of the target operation tower. In addition, the fifth load type isolating switch is required to be disconnected, the bypass is ensured to be uncharged, then the bypass is respectively disassembled from the small-size side of the first tower and the large-size side of the target operation tower, and the safety of operators in the construction process is ensured by the design of the second load type isolating switch and the fifth load type isolating switch.
The step of removing the bypass from the small-size side of the first tower and the large-size side of the target operation tower respectively further comprises:
and (4) removing the bypass cable drainage clamp and withdrawing the bypass equipment.
As shown in fig. 2, in one embodiment, the distribution line migration method further includes the steps of:
and S800, adjusting the consolidation mode and lead wire sag of the target operation tower.
After the connecting lead at the large-size side of the target operation tower and the first tower is switched and connected to the large-size side of the second tower in the new distribution line, the consolidation mode and the lead sag of the target operation tower are adjusted, so that the lead between the target operation tower and the second tower meets the distribution line lead erection standard.
As shown in fig. 2, in one embodiment, the distribution line migration method further includes the steps of:
and S900, removing the old lead and the old tower. The old lead and the old tower refer to the tower and the lead on the power distribution line section to be migrated.
In order to better explain the implementation process of the distribution line migration method provided by the present application, specifically, a power generation car is taken as an example for explanation. The field layout of the distribution line migration method is shown in fig. 7, a tower 1 is arranged on the small-size side of a distribution line section to be migrated, and a first tower, namely a tower 2 in fig. 7, is arranged on the large-size side of the distribution line section to be migrated. And a fifth load type isolating switch K5 is arranged between the tower 1 and the tower 2.
When the business expansion requirement is received, the section of the distribution line to be transferred can be determined according to the actual requirement, then the route of a new distribution line to be newly erected and the position and the number of the towers to be arranged on the route are determined according to the business expansion requirement and the transfer distribution line section, and the towers on the new route are sequentially connected through the conducting wires. A fourth load type isolating switch K4 in an off state can be set on the new distribution line, and the large-size side of the new distribution line is not electrified. At this time, in order to ensure that the users on the large-size side of the distribution line to be migrated do not lose power in the line migration process, the output end of the generator car 10 is connected in series with a first load type isolating switch K1 in an off state for target operation of the tower, so that the other end of the K1 can be connected with the large-size side of the 3 tower in the non-power operation mode, the generator car 10 is connected, then the K1 is closed, and the generator car 10 supplies power for the users on the large-size side of the 3 tower. At the moment, the third load type isolating switch K3 is disconnected and the fourth load type isolating switch K4 is kept disconnected, so that the connecting point of the K3 and the 3 pole towers is uncharged, a worker can remove a lead connected with the 3 pole towers from the connecting point, the lead is transferred to the second pole tower, namely the large-size side of the 2 'pole tower in the picture 7 to be connected, after the connection is completed, the K4 is closed, the K1 is disconnected, and the power supply network connected to the small-size side of the new power distribution line (namely the power supply network connected to the small-size side of the 1' pole tower in the picture) supplies power to the section where the new power distribution line is located and the user on the large-size side of the 3 pole tower, so that the power distribution line migration without power outage is realized, and the operation process is high in safety.
After the migration is completed, the fifth load type isolating switch K5 can be disconnected, so that other towers except the tower 1 in the power distribution line section to be migrated are not electrified, and the dismounting work of the towers and the wires in the power distribution line section to be migrated can be carried out under the condition of no electrification, and the safety is high.
Taking the power supply network connected to the small-size side of the power distribution line segment to be migrated as an uninterruptible power supply, the field layout of the power distribution line migration method is shown in fig. 8, wherein the explanations of the pole towers on the power distribution lines and the load-type isolation switches on the power distribution lines can be referred to the description in the corresponding embodiment of fig. 7, and are not repeated herein. After 3 towers are determined according to the business expansion requirement, a bypass is connected between K5 and 2 towers, one end of the bypass is connected with the large-size side of the 2 tower, the other end of the bypass is connected with one end of a second load type isolating switch K2, and the other end of K2 is connected with the large-size side of the 3 tower. The closing K2 enables the power supply network connected to the small-size side of the power distribution line section to be migrated to directly supply power to the users on the large-size side of the 3 tower. Disconnection K3 and keep K4 disconnection this moment, make K3 and 3 shaft tower's the connecting point department uncharged, the staff can follow this department connecting point and demolish the wire of being connected with 3 shaft tower, move to the large size side of 2' shaft tower and connect, after connecting well, closed K4, disconnection K2, the power supply network that the small size side of new distribution line connects for the user power supply of new distribution line place section and 3 shaft tower large size side this moment, realized not stopping power distribution line and moved, and the operation process security is high.
In the above embodiments, the term "connected" and "connection" refer to connection through electrical connection points.
It should be understood that although the various steps in the flow charts of fig. 1-6 are shown in order as indicated by the arrows, the steps are not necessarily performed in order as indicated by the arrows. The steps are not performed in the exact order shown and described, and may be performed in other orders, unless explicitly stated otherwise. Moreover, at least some of the steps in fig. 1-6 may include multiple steps or multiple stages, which are not necessarily performed at the same time, but may be performed at different times, which are not necessarily performed in sequence, but may be performed in turn or alternately with other steps or at least some of the other steps.
Claims (10)
1. A method for distribution line migration, the method comprising:
installing towers on a new distribution line, and sequentially connecting all the towers on the new distribution line by using a conducting wire, wherein the new distribution line is determined according to a distribution line section to be migrated, and the distribution line section to be migrated is determined according to a business expansion requirement;
determining a target operation tower according to the power distribution line section to be migrated, wherein the small-size side of the target operation tower is electrically connected with the large-size side of the power distribution line section to be migrated;
connecting a non-power-off power supply to the large-size side of the target operation tower, so that the non-power-off power supply supplies power to a distribution line on the large-size side of the target operation tower;
switching and connecting the connecting lead of the large-size side of the target operation tower and the first tower to the large-size side of a second tower in the new distribution line, and switching on a power supply path of the new distribution line; the first tower refers to a tower on the large-size side of the power distribution line section to be migrated; the second tower is a tower on the large-size side of the new distribution line;
and disconnecting the uninterruptible power supply to supply power to the distribution line on the large-size side of the target operation tower.
2. The method of claim 1, wherein the uninterruptible power supply is a power generation vehicle, and the step of connecting the uninterruptible power supply to the large side of the target tower comprises:
and connecting the output end of the power generation car to the large-size side of the target operation tower, so that the power generation car supplies power to the distribution line on the large-size side of the target operation tower.
3. The method of claim 2, wherein connecting the generator car to the large side of the target tower comprises connecting the generator car to a distribution line on the large side of the target tower, and wherein the step of causing the generator car to supply power to the distribution line on the large side of the target tower comprises:
connecting the output end of the power generation car with one end of a first load type isolating switch in a disconnected state;
connecting the other end of the first load type isolating switch with the large-size side of the target operation tower;
and closing the first load type isolating switch.
4. The method of claim 1, wherein the uninterruptible power supply is the power grid connected to the small side of the power distribution line segment to be migrated; the step of connecting the uninterruptible power supply to the large-size side of the target operation tower comprises the following steps:
and connecting one end of a bypass with the small-size side of the first tower, and connecting the other end of the bypass with the large-size side of the target operation tower, so that a power supply network connected to the small-size side of the power distribution line section to be migrated supplies power to the power distribution line on the large-size side of the target operation tower.
5. The method of claim 4, wherein said bypass path includes a second load-type isolation switch in an open state; the step of connecting one end of a bypass with the small-size side of the first tower and connecting the other end of the bypass with the large-size side of the target operation tower so that a power supply network connected to the small-size side of the power distribution line section to be migrated supplies power to a power distribution line on the large-size side of the target operation tower comprises the following steps:
connecting one end of the second load type isolating switch with the small-size side of the first tower, and connecting the other end of the second load type isolating switch with the large-size side of the target operation tower;
and closing the second load type isolating switch.
6. The method according to any one of claims 1-5, characterized in that a third load-type isolating switch in a closed state is connected in series between the large-size side of the first tower and the small-size side of the target operation tower;
after the step of connecting the uninterruptible power supply to the large-size side of the target operation tower, and before the step of switching and connecting the connecting lead of the target operation tower and the large-size side of the first tower to the large-size side of the second tower in the new distribution line, the method further comprises the following steps:
and opening the third load type isolating switch.
7. The method according to any one of claims 1 to 5, wherein a fourth load-type disconnecting switch in an off state is connected in series between the second tower and the tower adjacent to the small-size side of the second tower; the step of switching on the power supply path of the new distribution line comprises the steps of:
and closing the fourth load type isolating switch.
8. The method of claim 3, wherein the step of disconnecting the uninterruptible power supply from the distribution line on the large-size side of the target tower comprises:
disconnecting the first load type isolating switch;
and removing the power generation car from the large-size side of the target operation tower.
9. The method of claim 5, wherein the step of disconnecting the uninterruptible power supply from the distribution line on the large-size side of the target tower comprises:
disconnecting the second load type isolating switch;
and respectively detaching the bypass from the small-size side of the first tower and the large-size side of the target operation tower.
10. The method of claim 1, further comprising the steps of:
and adjusting the consolidation mode and lead sag of the target operation tower.
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001268818A (en) * | 2000-03-23 | 2001-09-28 | Fuji Electric Co Ltd | Uninterruptible feeding system |
| CN101222145A (en) * | 2007-01-11 | 2008-07-16 | 宝山钢铁股份有限公司 | Device and method for on-line switching uninterrupted power supply |
| CN101824930A (en) * | 2009-03-05 | 2010-09-08 | 福建省厦门电业局 | Operation method of 10kV common-pylon double-circuit line charged vertical pylon |
| CN101907456A (en) * | 2010-06-30 | 2010-12-08 | 华南理工大学 | Method for calculating thickness and weight of ice coating on overhead transmission line of tangent tower |
| CN102403779A (en) * | 2011-12-08 | 2012-04-04 | 河南省电力公司郑州供电公司 | Power supply system for bypass to operate without power failure |
| CN105155916A (en) * | 2015-09-07 | 2015-12-16 | 安徽华电工程咨询设计有限公司 | Single-loop angle steel tower with positive and negative phase-sequence transformation |
-
2021
- 2021-09-18 CN CN202111112355.6A patent/CN113937653B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001268818A (en) * | 2000-03-23 | 2001-09-28 | Fuji Electric Co Ltd | Uninterruptible feeding system |
| CN101222145A (en) * | 2007-01-11 | 2008-07-16 | 宝山钢铁股份有限公司 | Device and method for on-line switching uninterrupted power supply |
| CN101824930A (en) * | 2009-03-05 | 2010-09-08 | 福建省厦门电业局 | Operation method of 10kV common-pylon double-circuit line charged vertical pylon |
| CN101907456A (en) * | 2010-06-30 | 2010-12-08 | 华南理工大学 | Method for calculating thickness and weight of ice coating on overhead transmission line of tangent tower |
| CN102403779A (en) * | 2011-12-08 | 2012-04-04 | 河南省电力公司郑州供电公司 | Power supply system for bypass to operate without power failure |
| CN105155916A (en) * | 2015-09-07 | 2015-12-16 | 安徽华电工程咨询设计有限公司 | Single-loop angle steel tower with positive and negative phase-sequence transformation |
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