500kv vertical-arrangement symmetrical double-circuit compact tangent tower

Abstract

A 500kV vertical-arrangement symmetrical double-circuit compact tangent tower comprises ground wire supports, phase conductors,tower windows, V-shaped insulator strings, a tower body, and tower legs, wherein the tower windows are formed by enclosing a tower body middle column, side columns, a lower cross arm and an upper cross arm, each tower window is provided with one upper phase conductor, one middle phase conductor and one lower phase conductor in vertical arrangement in a circuit, all the phase conductors are connected with the tower windows through the V-shaped insulator strings, a tower head composed of two tower windows in bilateral symmetry is disposed at the top of the tower body, the tower form of the whole tower head is axially symmetrical, the ground wire supports are disposed at the top of the tower head, and the ground wires and the phase conductors below form negative protection angles. The tower head and the tower body are structurally optimized, the conductors employ the insulator string style for improvement, the tower head is compact in arrangement, and accordingly the tower is novel and creative in structure, the width of a line corridor and the height of the tower are reduced to the maximum extent, transmission power of the single corridor is improved, line electromagnetic environment is improved, and the tower is an innovative double-circuit tower meeting the requirements on both width limit and height limit.

Description

technical field [0001] The invention relates to a double-circuit compact linear tower, in particular to a 500kV vertically arranged and symmetrically arranged double-circuit compact linear tower that meets both the height limit and the width limit, and belongs to the iron tower of an overhead transmission line. Background technique [0002] For the 500kV double-circuit Qiaosi-Qianjiang 500kV transmission line project, because the line goes deep into the economically developed Hangzhou city center, residential houses and other buildings are relatively dense, and land resources such as farmland are tight, there are strict planning requirements for the width of the transmission line corridor; At the same time, the airport and military direction-finding station adjacent to the line limit the height of the line, requiring that the maximum height of the line in this project should not exceed 50m within a certain range. [0003] At present, there are only two forms of domestic ...

AI Technical Summary

Problems solved by technology

[0004] The 500kV double-circuit compact tower adopts V-string vertical suspension, and the iron tower is arranged in a hyperbolic or drum shape. The distance between lines is small, and it is suitable for narrow corridor areas. Under certain circumstances, it cannot meet the requirements of the 50m height limit for general airports and military direction-finding stations

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