CN205509427U - 500 kilovolt compact transmission line changes conventional transmission line transition strain insulator tower - Google Patents

Abstract

The utility model discloses a 500 kV compact transmission line to a conventional transmission line transition tension tower, which comprises a tower body, a T-shaped cross arm for the ground wire on the inner corner side, a cross arm for the ground wire on the outer corner side, and a horizontal wire cross arm on the inner corner side of the upper phase. T-shaped cross-arm for the outer corner wires of the bearer and upper phase, the middle-phase hanging point of the tower body, and the T-shaped cross-arm for the middle-phase jumper. The wire on the inner corner side is installed on both sides of the cross arm of the wire on the inner corner side through a tension string, and the wires on both sides are connected through a jumper, and the jumper is installed on the T-shaped cross arm end of the ground wire on the inner corner side; the wire on the outer corner side of the upper phase is passed through a tension string Installed on both sides of the cross-arm of the wire on the outer corner side, connect the wires on both sides through the jumper wire, and install the T-shaped cross-arm end of the wire on the outer corner side of the jumper wire; Connect the wires on both sides, and install the jumper at the end of the T-shaped cross-arm of the mid-phase jumper. The utility model realizes the transition from a single-circuit 500 kV compact power transmission line to a conventional power transmission line, and the wiring mode is simple.

Description

500 kV compact transmission line to conventional transmission line transition tension tower

technical field

The utility model relates to a 500 kV compact transmission line-to-conventional transmission line transition tension tower, which belongs to the technical field of power transmission and distribution.

Background technique

The compact transmission line is an overhead transmission line that puts the three-phase conductors in the same tower window, compresses the distance between the three-phase lines, reduces the tower weight, reduces the width of the line corridor, and increases the transmission capacity of the unit corridor. In the operation of compact lines in recent years, it has been exposed that under the combined action of ice and wind, faults such as galloping, breakage of interphase spacer brackets, and tripping are prone to occur. When reconnecting, open-loop, and other transformations to existing compact lines, it is often recommended to use conventional transmission lines for sections located in mountainous areas, medium-heavy ice areas, or dancing areas. Between compact transmission lines and conventional transmission lines The transition needs to set up the conversion tower.

Utility model content

The technical problem to be solved by the utility model is to overcome the defects of the prior art, to provide a transitional tension tower from a 500 kV compact transmission line to a conventional transmission line, and to realize a single-circuit 500 kV compact The transition from transmission lines to conventional transmission lines is simple and easy to implement.

For solving the problems of the technologies described above, the technical scheme that the utility model adopts is as follows:

500 kV compact transmission line to conventional transmission line transition tension tower, including the tower body, on the inner corner side of the tower body, install the mid-phase jumper T-shaped cross arm, upper phase inner corner side conductor cross arm, inner corner side in sequence from bottom to top T-shaped cross arm of side ground wire; T-shaped cross arm of upper phase outer corner side wire and T-shaped cross arm of outer corner side ground wire on the outer corner side of the tower body; three-phase wires are arranged in an inverted triangle, from top to bottom It is the ground wire, the phase wires on both sides and the middle phase wire;

There are medium-phase compact line wire tension string hanging points and medium-phase conventional line wire tension string hanging points installed on the tower body, and the medium-phase compact line is installed on the medium-phase compact line wire tension string hanging point through the wire tension string At the point, the medium-phase conventional line is installed on the medium-phase conventional line wire tension string hanging point through the conductor tension string;

The upper phase inner corner side compact line wire tension string hanging point and the upper phase inner corner side conventional line wire tension string hanging point are installed on the upper phase inner corner side conductor cross arm, and the upper phase inner corner side compact line passes through the wire tension stringer Installed on the tension string hanging point of the compact line wire on the inner corner side of the upper phase, and the conventional line on the inner corner side of the upper phase is installed on the tension string hanging point of the conventional line wire on the inner corner side of the upper phase through the wire tension string;

On the T-shaped cross-arm of the upper-phase outer-corner conductor, there are tension-resistant string hanging points for the upper-phase outer-corner compact line conductors and upper-phase outer-corner conventional line conductor tension-resistant string attachment points, and the upper-phase outer corner-side compact lines pass through The tension string is installed on the tension string hanging point of the compact line wire on the outer corner side of the upper phase, and the conventional line on the outer corner side of the upper phase is installed on the tension string hanging point of the conventional line wire on the outer corner side of the upper phase through the wire tension string;

The inner corner side ground wire tension string hanging point is installed on the inner corner side ground wire T-shaped cross arm, and the inner corner side ground wire is installed on the inner corner side ground wire tension string hanging point through the ground wire tension string;

The outer corner side ground wire tension string hanging point is installed on the outer corner side ground wire cross arm, and the outer corner side ground wire is installed on the outer corner side ground wire tension string hanging point through the ground wire tension string.

The above-mentioned tension string hanging point of the conventional line wire on the inner corner side of the upper phase is far away from the tower body relative to the tension string hanging point of the compact line wire on the inner corner side of the upper phase; The tension string hanging point of the compact line conductor on the outer corner side of the phase is far away from the tower body.

The above-mentioned outer corner side ground wire cross arm adopts a square cross arm.

The aforesaid upper-phase inner-angle-side conductor cross-arm adopts a pointed cross-arm.

The above-mentioned compact line on the inner corner side of the upper phase and the conventional line on the inner corner side of the upper phase are connected in three-jump series, and the three-jump series is installed at the T-shaped cross-arm end of the ground wire on the inner corner side.

The aforementioned medium-phase compact lines and medium-phase conventional lines are connected by three-jumper strings, and the three-jump strings are installed at the ends of the T-shaped cross-arms of the middle-phase jumper wires.

The aforesaid compact line on the outer corner side of the upper phase and the conventional line on the outer corner side of the upper phase are connected by a three-jump series, and the three-jump series is installed on the T-shaped end of the T-shaped cross-arm of the upper phase outer corner side wire.

The above-mentioned T-shaped cross-arm of the inner corner side ground wire adopts a T-shaped structure; the T-shaped end of the T-shaped cross-arm of the inner corner side ground wire is installed with a three-jump string of the inner corner side wire of the upper phase.

The above-mentioned T-shaped cross-arm of the middle-phase jumper adopts a T-shaped structure, and the middle-phase wire is installed on the T-shaped end in three jumper strings.

The above-mentioned T-shaped cross-arm of the outer corner side wire of the upper phase adopts a T-shaped structure.

The beneficial effects achieved by the utility model:

1. One side of the utility model is connected to the compact line, and the other side is connected to the conventional line. On the side of the conventional line, the hanging points of the inner and outer corner wires of the upper phase are respectively displaced away from the side of the tower, which meets the distance requirements of the conventional line. , the transition from a single-circuit 500 kV compact transmission line to a conventional transmission line is realized on a basic iron tower, and its wiring method is simple and easy to implement;

2. The T-shaped crossarm of the ground wire on the inner corner side of the utility model, the T-shaped crossarm of the outer corner side wire of the upper phase, and the T-shaped crossarm of the mid-phase jumper wire adopt a T-shaped structure, and realize that the jumper wires of the three phase wires all adopt the winding jump method , to ensure that the electrical clearance between the wire and the tower body meets the requirements, and at the same time meet the ground requirements for the lightning protection angle of the ground wire to the wire;

3. The utility model can meet the load requirements of compact lines and conventional lines using different wires, and is safe and reliable.

Description of drawings

Fig. 1 is the front view of the tension tower of the single-circuit transmission line of the present invention;

Fig. 2 is a three-dimensional view of the strain-resistant tower line of the single-circuit transmission line of the present invention.

detailed description

Below in conjunction with accompanying drawing, the utility model is further described. The following examples are only used to illustrate the technical solution of the utility model more clearly, but not to limit the protection scope of the utility model.

Referring to Fig. 1 and Fig. 2, the utility model provides an iron tower used for the transition from a 500 kV compact transmission line to a conventional transmission line, specifically a strain-resistant tower for a single-circuit transmission line, including a tower Body 1, on the inner corner side of the tower body 1, install the middle phase jumper T-shaped cross arm 2, the upper phase inner corner side wire cross arm 4, and the inner corner side ground wire T-shaped cross arm 6 in sequence from bottom to top; on the outer corner of the tower body 1 Install the T-shaped cross-arm 3 of the upper-phase outer corner side wire and the ground wire cross-arm 5 of the outer corner side in sequence from bottom to top. The three-phase wires are arranged in an inverted triangle, and from top to bottom are the ground wires, the phase wires on both sides, and the middle phase wires. On the tower body 1, the middle-phase wire tension string hanging points 7 and 14 are installed; The T-shaped cross arm 3 is equipped with upper-phase outer corner side wire tension string hanging points 8 and 12, and the inner corner side ground wire T-shaped cross arm 6 is equipped with inner corner side ground wire tension string hanging points 11, and the outer corner side ground wire Line cross arm 5 is equipped with outer angle side ground wire tension string hanging point 10, and this tower body 1 carries all loads of guide, ground wire and iron tower.

As shown in Figure 2, the cross arm 5 of the ground wire on the outer corner side adopts a square cross arm, and the ground wire on the outer corner side is installed on the tension string hanging point 10 of the ground wire tension string on the outer corner side through the ground wire tension string; Adopt pointed cross arm, install the compact line on the inner corner side of the upper phase on the wire tension string hanging point 9 on the inner corner side of the upper phase through the wire tension string, and install the conventional line on the inner corner side of the upper phase through the tension string on the wire on the inner corner side of the upper phase On the tension string hanging point 13, the compact line on the inner corner side of the upper phase and the conventional line are connected in three-jump series, and the three-jump series is installed at the end of the T-shaped cross-arm 6 of the ground wire on the inner corner side; The tension string is installed on the tension string hanging point 7 of the medium-phase conductor, and the medium-phase conventional line is installed on the tension string hanging point 14 of the medium-phase conductor through the tension string of the conductor, and the medium-phase compact line and the conventional line are connected in series with three jumps Pass, the three-jump string is installed at the end of the T-shaped cross-arm 2 of the middle-phase jumper.

As shown in Figure 2, the T-shaped crossarm 6 of the inner corner side ground wire adopts a T-shaped structure, and the inner corner side ground wire is installed on the inner corner side ground wire tension string hanging point 11 through the ground wire tension string, and the inner corner side ground wire is T-shaped. The T-shaped end of the cross-arm 6 is installed with three jump strings of wires on the inner corner side of the upper phase; the T-shaped cross-arm 3 on the outer corner side of the upper phase adopts a T-shaped structure, and the compact line on the outer corner side of the upper phase is installed on the outer corner of the upper phase through the wire tension string On the side wire tension string hanging point 8, the conventional line on the outer corner side of the upper phase is installed on the wire tension string hanging point 12 on the outer corner side of the upper phase through the wire tension string, and the compact line and the conventional line on the outer corner side of the upper phase adopt a three-hop string Connected, the three jumper strings are installed on the T-shaped end of the T-shaped cross-arm 3 of the outer corner wire of the upper phase; Skip the string.

As shown in Figure 2, the tension string hanging point 13 and the tension string hanging point 12 of the phase inner corner wire on the conventional line are compared with the tension string hanging point 9 and the outer corner wire tension string hanging point 9 of the phase inner corner wire on the compact line. The hanging points 8 of the strings are respectively displaced away from the side of the tower body, which meets the distance requirements of conventional lines; The cross-arm adopts T-shaped structure, which realizes that the three-phase wire jumper adopts the jumping method, which ensures that the electrical clearance between the wire and the tower body meets the requirements, and at the same time meets the ground requirements for the lightning protection angle of the ground wire to the wire.

The utility model realizes the transition from a single-circuit 500 kV compact power transmission line to a conventional power transmission line on a basic iron tower, and its wiring mode is simple and easy to implement.

The above is only the preferred embodiment of the utility model, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the utility model, some improvements and deformations can also be made. And deformation should also be regarded as the protection scope of the present utility model.

Claims (10)

The 1.500 kV compact transmission line to conventional transmission line transitional strain tower is characterized in that, including the tower body, the middle phase jumper T-shaped cross arm and the upper phase inner corner side wire are installed in sequence from bottom to top on the inner corner side of the tower body Cross arm, T-shaped cross arm of the ground wire on the inner corner side; install the T-shaped cross arm of the upper phase outer corner side wire and the T-shaped cross arm of the outer corner side ground wire on the outer corner side of the tower body from bottom to top; the three-phase wires are arranged in an inverted triangle, from From top to bottom, it is the ground wire, the phase wires on both sides and the middle phase wire; There are medium-phase compact line wire tension string hanging points and medium-phase conventional line wire tension string hanging points installed on the tower body, and the medium-phase compact line is installed on the medium-phase compact line wire tension string hanging point through the wire tension string At the point, the medium-phase conventional line is installed on the medium-phase conventional line wire tension string hanging point through the conductor tension string; The upper phase inner corner side compact line wire tension string hanging point and the upper phase inner corner side conventional line wire tension string hanging point are installed on the upper phase inner corner side conductor cross arm, and the upper phase inner corner side compact line passes through the wire tension stringer Installed on the tension string hanging point of the compact line wire on the inner corner side of the upper phase, and the conventional line on the inner corner side of the upper phase is installed on the tension string hanging point of the conventional line wire on the inner corner side of the upper phase through the wire tension string; On the T-shaped cross-arm of the upper-phase outer-corner conductor, there are tension-resistant string hanging points for the upper-phase outer-corner compact line conductors and upper-phase outer-corner conventional line conductor tension-resistant string attachment points, and the upper-phase outer corner-side compact lines pass through The tension string is installed on the tension string hanging point of the compact line wire on the outer corner side of the upper phase, and the conventional line on the outer corner side of the upper phase is installed on the tension string hanging point of the conventional line wire on the outer corner side of the upper phase through the wire tension string; The inner corner side ground wire tension string hanging point is installed on the inner corner side ground wire T-shaped cross arm, and the inner corner side ground wire is installed on the inner corner side ground wire tension string hanging point through the ground wire tension string; The outer corner side ground wire tension string hanging point is installed on the outer corner side ground wire cross arm, and the outer corner side ground wire is installed on the outer corner side ground wire tension string hanging point through the ground wire tension string. 2. The 500 kV compact transmission line to conventional transmission line transition strain tower according to claim 1, characterized in that, the tension string hanging point of the conventional line wire on the inner corner side of the upper phase is relative to the inner corner side of the upper phase The tension string hanging point of the compact line wire is far away from the tower body; the tension string hanging point of the conventional line wire on the outer corner side of the upper phase is farther away from the tower body than the tension string hanging point of the compact line wire on the outer corner side of the upper phase. 3. The 500 kV compact transmission line-to-conventional transmission line transitional strain tower according to claim 1, characterized in that, the ground wire cross arm on the outer corner side adopts a square cross arm. 4. The 500 kV compact transmission line to conventional transmission line transitional strain tower according to claim 1, characterized in that, the cross arm of the conductor on the inner corner side of the upper phase adopts a pointed cross arm. 5. The 500 kV compact transmission line to conventional transmission line transition strain tower according to claim 1, characterized in that, the compact line on the inner angle side of the upper phase and the conventional line on the inner angle side of the upper phase adopt a three-hop series Connected, the three-jump string is installed at the end of the T-shaped cross-arm of the ground wire on the inner corner side. 6. The 500 kV compact transmission line to conventional transmission line transitional strain tower according to claim 1, characterized in that, the medium-phase compact line and the medium-phase conventional line are connected in series with three jumps, and the three The jump string is installed at the end of the T-shaped cross-arm of the middle-phase jumper. 7. The 500 kV compact transmission line to conventional transmission line transition strain tower according to claim 1, characterized in that, the compact line on the outer corner side of the upper phase and the conventional line on the outer corner side of the upper phase adopt a three-hop series Connected, the three-jump string is installed on the T-shaped end of the T-shaped cross-arm of the outer corner side wire of the upper phase. 8. The 500 kV compact transmission line to conventional transmission line transition strain tower according to claim 1, characterized in that, the T-shaped cross-arm of the inner corner side ground wire adopts a T-shaped structure; the inner corner side ground wire T The T-shaped end of the cross-arm is installed with three jump strings of the inner angle side wires of the upper phase. 9. The 500 kV compact transmission line to conventional transmission line transition strain tower according to claim 1, characterized in that the T-shaped cross-arm of the intermediate phase jumper adopts a T-shaped structure, and the T-shaped terminal is Install a three-jump string for the mid-phase conductor. 10. The 500 kV compact transmission line-to-conventional transmission line transitional strain tower according to claim 1, characterized in that, the T-shaped cross-arm of the upper-phase outer corner conductor adopts a T-shaped structure.