KR101103553B1 - Uninterruptible power bypassing mehtod for power line using insulation guider for spacing - Google Patents

Abstract

PURPOSE: An uninterruptible bypass method of a power distribution line which uses an insulation guider for fixing an interval is provided to use a bypass cable which includes a multipoint connection part which is able to perform a bypass process of a branch line, thereby solving a problem generated due to a plurality of cable connection points. CONSTITUTION: A suspension wire(10) is installed in order to perform an uninterruptible task on an electric pole. An insulation guider(40) for fixing an interval is installed in the suspension wire in order to fix the interval between the insulation guider and the ground. A switching device(60) for construction is installed on both lateral end electric poles of a range for performing the uninterruptible task. A bypass cable(50) is installed in order to be separated from each other using the insulation guider which maintains the interval. A multipoint connection part(70) is continuously arranged with a fixed interval in the bypass cable.

Description

Uninterruptible power bypassing mehtod for power line using insulation guider for spacing}

The present invention in the distribution line method for the replacement and relocation of the distribution lines connected to each pole and the change of transition site, in particular the temporary guide line and the insulation guider and the bypass cable for maintaining the spacing and the connection on the bypass cable It is possible to maintain a stable power supply by using a branch outlet, and greatly improve the work safety by the bypass cable in the aerial line state. It is about uninterrupted bypass method of distribution line by using insulating guider for keeping gap that prevents damage or damage.

In response to the surge in demand for electricity, electric power facilities have been expanded in response. As the demand for electric quality of electric power users increases, momentary power failures are also subject to civil complaints. As the situation is increasing, the uninterruptible construction method is performed in which the power distribution construction is performed without cutting the power for supplying high quality power during the power distribution construction.

In general, the uninterruptible power distribution work is composed of a mobile transformer car, a bypass cable, a construction switch, and the like. The bypass cable is installed to bypass the power supply, and then the distribution line is replaced and moved. After that, the bypass cable is removed and the power distribution work is completed.

In other words, the temporary transmission method using the existing bypass cable, if there is a branch line and the special high-voltage customer and equipment in the construction section, the power switch and load side of the construction section and a bypass cable of 50m length and a number of intermediate connection materials As a method of separating and constructing jumper wires in the construction section while supplying power temporarily with wires, typically 4 uninterrupted electricians, 4 power distribution majors and 4 ordinary workers are required. Two construction switches and one bypass cable car are required.

The installation sequence by the uninterrupted bypass method is connected to the ground wire in the construction switch enclosure in the state where the construction switch is installed first, and the grounding bracket and the cable clamp are installed in the construction switch holder. Install branch cable, connect intermediate cable, connect branch cable, protect neutral cable and power line, and column worker install temporary hanger, branch crete and cable clamp on power side, branch side and load side.

Then, connect the cable to the switchgear bushing for construction, connect the branch line cable, connect the power supply side and load side and the cable main line, input the power supply side and load side construction switch, connect the cable to the branch line power line, and connect the power supply side and the load side jumper wire. After cutting, the work section is performed before the test work.

However, the temporary transmission method using the conventional bypass cable has the following problems.

First, there is a safety problem such as the risk of safety accident due to unsafe connection due to cable damage, wear of the connection material and contamination of foreign materials by repeated installation and removal of bypass cable. The bypass cable used for installation is installed on the ground, so it is not possible to guarantee the safety of the cable by repeating installation and dismantling every time the work is performed, and if the cable is damaged, Workers and pedestrians near the damaged cable may lead to electric shock.

In addition, the 50m-bypass unit is temporarily connected with a straight connection member, and in the case of a branch line, the temporary connection with the branch connection member is repeatedly performed, causing wear and contamination of the connection point, which is caused by deterioration of the connection point and the cable. Subsequently, since the complete connection is not made, the electrical resistance increases at the connection point.

Second, because cable allowance is 5,000kVA, load switching to other line should be performed to lower the load capacity of working section below 5,000kVA. There is a problem that wastes manpower and time, such as power failure accidents due to incorrect operation according to the operation of the switch.

In other words, when connecting separate conductors, the resistance is inevitably increased compared to the original conductor, and as the electrical resistance increases, a voltage drop naturally occurs. When voltage drop occurs and cable allowance is 5,000kVA, it calculates safe capacity that cable can endure in consideration of straight line or branch connection when installing bypass cable. If the connection point is reduced, the voltage drop can be reduced. Therefore, even if the same cable is used, it can endure the load of more capacity, and the power transmission efficiency is increased so that the inconvenient procedure of load switching according to the load capacity does not need to be carried out except in special cases (load capacity of 10,000kVA or more). Will.

Third, in the event of accidents due to weather irregularities during work, the live parts of the bypass cable and the exposed connection points that are already installed are left on the ground, which may lead to large-scale power outages as well as safety risks and impossibility of returning to the power system. very big.

This problem can be solved by installing the cable into the column on the ground rather than on the ground. In the current uninterrupted line, if necessary, the bypass cable is installed on the column using the coarse wire. It is a reality that there are no additional tools or clear construction methods that can ensure the safety for machining installation.

Fourthly, in order to perform the temporary transmission method using the bypass cable, the contractor should have the expensive equipment and tools accompanying the bypass cable as well as the accompanying equipment. As a result, the contractor would have a significant economic burden.

The present invention has been made to solve the problems as described above, the installation of the aerial line in the construction section and the interval line insulation guide for maintaining the gap of the bypass cable and at the same time to facilitate the twisted pair of bypass cable Intervals are installed at regular intervals, and spaced installation of the bypass cable using the insulation guider for maintaining the spacing, as well as intervals for quickly and conveniently connecting the branch power lines by using a predetermined interval formed in the bypass cable. It is an object of the present invention to provide an uninterrupted bypass method for a distribution line using a maintenance insulation guider.

Specific means for achieving the above object, the installation process for installing the barge on the poles on both sides of the section for performing the uninterruptible work by the pinjangju complete fixing device and the arm extension auxiliary arm;

An interval maintaining insulation guider installation step of fixing the interval maintaining insulation guider made of an insulator to the barbed wire at a predetermined interval spaced from the ground;

A switch installation step of installing a switch for construction on both sides of the poles of the section for performing the uninterruptible work;

A bypass cable installation step of performing aerial wires so that the bypass cables are spaced apart from each other by using the insulating guider for maintaining the gap;

A bypass cable connecting step of allowing the air bypass cable to be connected to electric wires in the poles at both ends of the work section via the switch;

It can be achieved by a branch power line connecting process of connecting the branch power line from the bypass cable formed with the branch connection at regular intervals and installing an insulation protection cover.

As described above, the uninterruptible bypass method of a distribution line using the insulation guider for maintaining gaps provides a problem caused by a plurality of cable connection points in performing the temporary transmission method using a bypass cable for an uninterruptible operation of the distribution line. The cable can be removed and removed by using a bypass cable with a branch connection that allows bypass of the branch line by a simple operation, and an insulator spacing guide with a length adjustment connecting rod to adjust the ground height of the bypass cable. It is easy to work at the time of construction, and it can prevent the accidents caused by the contact between the cables by keeping the gap more than the safe safety distance while the cable is being installed. To solve the problems caused by In addition, it has the effect of enabling stable power supply based on the reduction of equipment investment cost, work efficiency and efficiency.

1 is an example of the uninterrupted bypass construction of the distribution line according to the present invention
Figure 2 is a state of installation of a rough line in the uninterrupted bypass method of the distribution line according to the present invention
Figure 3 is an installation state of the insulation guide for maintaining the interval during the uninterrupted bypass method of the distribution line according to the present invention
Figure 4 is an installation state of the switchgear in the uninterrupted bypass method of the distribution line according to the present invention
5 is a bypass cable installation state of the uninterrupted bypass method of the distribution line according to the present invention
6 is a diagram illustrating a branch power line connection state in an uninterruptible bypass method of a distribution line according to the present invention.
Figure 7 is a detailed view of the barbed wire fixed part by the pinjangju complete fixture and the complete extension auxiliary arm in the uninterrupted bypass method of the distribution line according to the present invention
8 is a state diagram of the insulation guider for maintaining the interval during the uninterrupted bypass method of the distribution line according to the present invention
9 is a state diagram of the branch connection and the insulating protective cover during the uninterrupted bypass method of the distribution line according to the present invention
10 is an example of electric power distribution construction between Jeonju and Jeonju during uninterrupted bypass method of the distribution line according to the present invention

Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.

1 is a view illustrating an uninterrupted bypass construction of a distribution line according to the present invention.

The present invention can be distinguished from the temporary transmission method using the conventional bypass cable in two ways. The bypass cable laid on the ground is installed in the column by using the insulation guider for maintaining the gap and used at this time. The newly designed bypass cable does not have an intermediate connection, and it can be configured to enable branch connection if necessary, minimizing the connection point of the cable and compensating for various problems caused by the cable connection.

In more detail, this differentiated work method,

First, as shown in FIG. 2, the wires 10 are wired for the installation of the bypass cable in the working section, and the position of the wires 10 is lower than the low voltage line when the low voltage line is wired. ), And the cable line 10 is spaced apart from the electric pole 100, 100 'by using the pinjangju complete fixing device 20 and the full extension auxiliary arm 30, which are used as wire wire mechanisms. do.

Next, the newly installed spacing maintaining insulation guider 40, as shown in FIG.

In this case, the insulation guider 40 for maintaining the gap has a triangular structure in which the three-phase electric wires do not touch each other when a situation occurs due to an external shock or vibration in consideration of an offset, which is considered important when installing a power line. The spaces 41 and 41 'which are opened and closed by the opening / closing lever 41a are formed on the part where the electric wires are fixed, so that the wire work and the demolition work can be easily performed. In the case of 30cm) or more, but the insulator so that the wire is fixed, the connection portion is formed of a polymer in preparation for the leakage current, the portion fixed to the bare wire 10 and the triangular spacing maintenance guider 40 is connected to each other The connecting table 42 is provided to the insulating guider 40 for maintaining the interval of the tripod as necessary by providing a length adjustment function using a connecting means such as an insulation rope or polymer suspension insulator. The ground clearance of the bypass cables 50 and 50 'can be adjusted.

 After installing the insulating guider 40 for maintaining the gap, as shown in FIG. 4, the construction switch 60, 60 ′ is installed at both sides of the work section at a height at which the bypass cables 50, 50 ′ are installed. It is installed on poles 100 and 100 '.

Next, as shown in FIG. 5, the three-phase bypass cables 50 and 50 'are wired, and the bypass cables 50 and 50' used at this time are also newly invented.

In the bypass cables 50 and 50 ', branch connection ports 70 and 70' are continuously formed at predetermined intervals, and there is a branch line in the uninterruptible work section, so it is easy to supply power to the branch line. By connecting the branch power lines 80 connected to the branch lines by opening the branch connectors 70 and 70 ', it is possible to easily supply power to the branch lines, and the branch connectors 70 and 70' are connected to the distribution lines. In consideration of the span of the furnace (about 50m per span in the case of the special high-voltage line), if the branch line is formed in every 50m of the bypass cable in the work section, the branch connection port 70 at the corresponding position as shown in FIG. (70 ') was configured to be connected to the branch line.

In addition, in the case of the road crossing point, the bypass cable 50, 50 'is laid by adjusting the height of the space keeping guider 40 to a position where the vehicle can pass, so that pedestrians and vehicles pass smoothly.

The bypass cables 50 and 50 'installed in the state of the insulation guider 40 for maintaining the gap can cope with a sudden change of weather during work, so that the power system is stable and safety accidents can be prevented. The rest of the work procedures can be done in accordance with the procedures of the temporary transmission method using conventional bypass cables.

In the uninterruptible bypass method as described above, the above-mentioned barbed wire is a known complete extension that is fastened to a known pin head complete device 20 and the pin head complete device 20 mounted on the pole as shown in FIG. As installed by using the auxiliary arm 30, the above-mentioned clapper 10 is to be installed in a state spaced apart from the pole.

In addition, while maintaining the bypass cable 50, 50 'is installed in the air from the barbed wire 10, evenly spaced guider for the three-phase cable evenly spaced from each other as shown in Figure 8 bypass cable 50 (50 ') is made of a triangular frame for spaced apart insertion, the inner side of the opening and closing lever (41a) to reduce the friction with the bypass cable (50, 50') to facilitate the wire and dismantling The opening / closing space portions 41 and 41 'which are opened and closed by this are formed.

Particularly, in the case of the connection table 42 for connecting the insulation guider 40 and the conical wire 10 for maintaining the gap, the length can be adjusted through various configurations, and most simply by using an insulation rope or the like. By connecting them to each other, it is possible to easily adjust the height of the bypass cables 50 and 50 'by adjusting the height of the insulating guider 40 for maintaining the gap. Insulation effect can be obtained.

In addition, the bypass cables 50 and 50 'are provided with branch connectors 70 and 70' having a predetermined interval as shown in FIG. 9, and the branch connectors 70 and 70 'are formed as shown in FIG. ) Consists of a fixed body 71 fixed to the cable and a fluid 72 sliding from the cable, the sheath of the bypass cables 50, 50 'corresponding to the inside of the fluid 72. Since the cover removing part 51 is formed to cut the exposed portion to expose the conductor therein, the branch connection port 70 formed at the corresponding position when the connection line is connected to the branch line using the branch power line 80 ( 70 ') is separated from the stationary body 71, and the above-mentioned branch power line 80 is connected to the cover removing unit 51 in an exposed state, and covered with an insulating protective cover 73.

Accordingly, looking at the construction example between Jeonju and Jeonju in the distribution line for the uninterruptible bypass method as shown in FIG. 10, each Jeonju 100, 100 'has a pinjangju complete fixing device 20 and the arm extension arm The coarse wire 10 and the space keeping insulating guider 40 are respectively provided by 30, and the space keeping insulating guider 40 is provided on the above barbed wire 10 as well.

In addition, the bypass cables 50 and 50 'are divided and wired apart from each other by the above-described space maintaining insulation guide 40, and the branch connection ports formed in these bypass cables 50 and 50' are constructed. The branch power lines 80 are connected through the 70 and 70 ′.

Therefore, the conventional method eliminates the inconvenience of connecting and using a bypass cable of a cutting type or cutting the bypass cable, and prevents electrical resistance, heat generation, and fragile damage caused by such operations. Effectively preventing it.

10: Joga Line 11: Special high-voltage center line
20: pin holder complete fixing device
30: complete extension arm
40: Insulation guider for space keeping 41,41 '': Space part
41a: closing lever 42: connecting rod
50,50 ': Bypass cable 51: Stripping part
60,60 ': Switchgear for construction
70,70 ': Branch connection 71: Fixture
72: fluid 73: insulation protective cover
80: branch power line
100,100 ': Jeonju

Claims (6)

A jogak installation step of installing a jogae on the poles of both ends of the section for performing an uninterruptible work by a pinjangju complete fixing device and a payout auxiliary arm;
An interval maintaining insulation guider installation step of fixing the interval maintaining insulation guider made of an insulator to the barbed wire at a predetermined interval spaced from the ground;
A switch installation step of installing a switch for construction on both sides of the poles of the section for performing the uninterruptible work;
A bypass cable installation step of performing aerial wires so that the bypass cables are spaced apart from each other by using the insulating guider for maintaining the gap;
A bypass cable connecting step of allowing the air bypass cable to be connected to electric wires in the poles at both ends of the work section via the switch;
In the uninterrupted bypass method of a power distribution line using an insulation guider for maintaining a gap, which is a branch power line connecting step of connecting a branch power line from a bypass cable having a branch connection at a predetermined interval and installing an insulation protection cover,
The space keeping insulation guider used to space the bypass cable is made of a triangular support body in which the three-phase bypass cable can be spaced apart from each other, and inside the support, frictional friction with the bypass cable is prevented. An uninterruptible bypass method for a distribution line using an insulation guider for maintaining gaps, which is formed by forming a space part that is opened and closed by an opening / closing lever to minimize and facilitate detachment. delete delete delete delete The method of claim 1,
The branch connection port consists of a fixed body fixed to the sheath of the bypass cable and a tubular fluid detachable from the fixed body, and removes the sheath of the bypass cable by removing the sheath of the bypass cable located inside the fluid. An uninterruptible bypass method for a distribution line using an insulation guider for space keeping, characterized in that the cover is exposed so that the branch power line can be branched to the cover removing portion and the insulation protective cover is provided.

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