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Transposition tower and transposition method

A transposition tower and wire transposition technology, which is applied in the space arrangement/configuration of towers and cables, building types, etc., can solve problems such as inconvenient operation and maintenance, many jumpers, and complex structures

Pending Publication Date: 2019-01-15
国网新疆电力有限公司建设分公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the prior art, the tension transposition method is usually used, without designing a special transposition tower, and using a certain base tension corner tower on the line to reconnect the originally set jumper for transposition, but it will make the transposition tower There are too many jumpers around the tower, and the whole tower needs six sets of jumpers. The structure is very complicated, and it is very inconvenient for operation and maintenance.

Method used

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  • Transposition tower and transposition method
  • Transposition tower and transposition method
  • Transposition tower and transposition method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Such as figure 1 with figure 2 As shown, the transposition tower 010 of Embodiment 1 of the present invention is used to transpose the three-phase conductors. The transposition tower 010 includes a first main tower 1000, a second main tower 2000, and a third main tower 3000. The three-phase conductors are respectively denoted Phase A, Phase B, and Phase C. The first main tower 1000, the second main tower 2000, and the third main tower 3000 are arranged in sequence along the direction of the transmission line. The first main tower 1000, the second main tower 2000, and the third main tower The 3000 is arranged in a dislocation along the vertical direction of the transmission line, the A-phase conductor is mounted on the first main tower 1000, the second main tower 2000, and the third main tower 3000 in sequence, and the B-phase conductor is mounted on the second main tower 2000, On the first main tower 1000 , the C-phase conductors are mounted on the third main tower 30...

Embodiment 2

[0090] see Figure 13 , the structure of the double-pointed cross-arm 420 in this embodiment is basically the same as that of the double-pointed cross-arm 120 in Embodiment 1, the difference is that in each group of pointed cross-arms 430, the first cross-arm insulator 440 and the second The cross-arm insulator 450 is composed of a composite insulator, and no auxiliary cross-arm insulator is provided. The second cross-arm insulator 450 of one group of pointed cross-arms 430 is directly connected to the midpoint of the second angle steel 402 through a connecting piece, so as to be connected to the tower head 410 without auxiliary arms and auxiliary cable-stayed insulators. The structure of another set of pointed cross arms 430 is the same as that of the pointed cross arms 130 in the first embodiment.

[0091] Of course, the present invention is not limited thereto. In other embodiments, the second cross-arm insulators 450 in the two sets of pointed cross-arms 430 may also be d...

Embodiment 3

[0094] see Figure 14 , the structure of the double-pointed cross-arm 520 in this embodiment is basically the same as that of the double-pointed cross-arm 120 in Embodiment 1, the difference is that each group of pointed cross-arms 530 is also provided with a third cable-stayed insulator 590 and A fourth cable-stayed insulator 591, one end of the third cable-stayed insulator 590 is connected to the connection between the first cable-stayed insulator 580 and the tower head 510, and the other end of the third cable-stayed insulator 590 is connected to the second cross-arm insulator 550 and The junction of the auxiliary cross-arm insulator 570. One end of the fourth cable-stayed insulator 591 is connected to the connection between the first cable-stayed insulator 580 and the tower head 510, and the other end of the fourth cable-stayed insulator 591 is connected to the connection between the first cross-arm insulator 540 and the auxiliary cross-arm insulator 570 .

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Abstract

The invention discloses a transposition tower for transposition of three-phase wires in a power transmission line. The transposition tower includes a first main tower, a second main tower and a thirdmain tower, wherein the three-phase wires are respectively an A phase, a B phase and a C phase, the first main tower, the second main tower and the third main tower are sequentially disposed along thedirection of the power transmission line, the first main tower, the second main tower and the third main towers are arranged along the vertical direction of the power transmission line in a staggeredmode, the A phase is sequentially mounted on the first main tower, the second main tower and the third main tower, the B phase is sequentially mounted on the second main tower and the first main tower, and the C phase is sequentially mounted on the third main tower and the second main tower. The transposition tower is advantaged in that the first main tower, the second main tower and the third main tower are arranged by staggering a certain distance along the line direction without jumper strings, and the structure is simple. The invention further discloses a transposition method.

Description

technical field [0001] The invention relates to a power transmission insulation device, in particular to a transposition tower and a transposition method. Background technique [0002] During the power transmission process of the transmission line, the three-phase conductors generate capacitance to the ground respectively, and with the extension of the transmission line, the capacitive reactance values ​​of the three-phase conductors are not equal, which will cause the obtained transmission parameters of the three-phase conductors to be unequal, and even cause Zero sequence current and negative sequence current. Zero-sequence current and negative-sequence current are likely to cause line and motor failures and affect normal power transmission. Therefore, it is necessary to ensure that the capacitive reactance values ​​of the three-phase wires are equal. The transposition of the three-phase wires through the transposition tower can ensure that the capacitive reactance values...

Claims

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Application Information

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IPC IPC(8): E04H12/00H02G7/20
CPCH02G7/20E04H12/00
Inventor 周楠何金业马斌程峰杨世江张健毕雪昱潘晓冬谢金华王金锁徐玉波穆峰磊黄清郁杰李德权
Owner 国网新疆电力有限公司建设分公司
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