Transposition tower and transposition method thereof

Abstract

The invention discloses a transposition tower and a transposition method thereof, and belongs to the field of transmission lines. The transposition tower comprises a tower body, a left cross arm, a right cross arm, a left crank arm, a right crank arm, a jumper part and a ground wire support. The left crank arm and the right crank arm are symmetrically arranged, and the lower ends of the left crankarm and the right crank arm are both connected with the upper end of the tower body. The left cross arm and the right cross arm are symmetrically arranged and connected with the outer sides of the left crank arm and the right crank arm correspondingly, and a front hanging point and a rear hanging point are arranged at each of the free end of the left cross arm and the free end of the right crossarm and used for hanging a front insulator chain and a rear insulator train correspondingly. The jumper part is arranged between the left crank arm and the right crank arm and used for hanging a firstjumper. The two ends of the ground wire support are connected with the upper ends of the left crank arm and the right crank arm correspondingly. A front hanging point and a rear hanging point used for hanging a front insulator chain and a rear insulator chain are arranged on the front and rear sides of the top of the tower body correspondingly. The transposition tower is simple in structure, lowin weight, low in manufacturing cost, capable of conveniently and safely carrying out transposition on three-phase conductors and suitable for transposition of a single-loop transmission line.

Description

technical field [0001] The invention relates to the field of power transmission lines, in particular to a transposition tower and a transposition method thereof. 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...

AI Technical Summary

Problems solved by technology

[0005] The transposition tower provided by the prior art is equipped with a left transposition jumper bracket, a right transposition jumper frame, and a middle transposition jumper frame, which makes the structure of the transposition tower complicated and increases the tower weight and manufacturing cost

Moreover, when transposing, jumpers need to bypass the jumper frame, which is inconvenient for overhauling the transposition tower

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