A comprehensive anti-dance method combining a limit-type anti-dance device and a phase-to-ground spacer

Abstract

The invention relates to a comprehensive anti-galloping method combining spacing-type anti-galloping devices and phase-to-ground spacers. The comprehensive anti-galloping method comprises following steps: A, determining mount point positions of the phase-to-ground spacers according to the span length of a power transmission line; B, determining the mounting direction of the phase-to-ground spacersaccording to the statistical result of the predominant wind direction of the region where the power transmission line exists; C, determining mounting positions of the spacing-type anti-galloping devices according to the span length and the mounting positions of the phase-to-ground spacers; D, fixing the spacing-type anti-galloping devices, adjusting the length of stay wires of the spacing-type anti-galloping devices, and making the stay wires in a loose state; and adjusting the length of stay wires of the phase-to-ground spacers to apply a 3-5 KN pretightening force. The comprehensive anti-galloping method combining the spacing-type anti-galloping devices and the phase-to-ground spacers has a good anti-galloping effect, the fact that the power transmission line operates safely is guaranteed, and economic loss caused by line galloping is reduced.

Description

technical field [0001] The invention belongs to the technical field of operation and maintenance of electric power system transmission lines, relates to the technical field of comprehensive prevention and control of galloping in overhead transmission lines, and specifically relates to a comprehensive Anti-dance method. Background technique [0002] With the development of transmission lines in recent decades and the extensive construction of UHV and EHV lines, the probability of accidents on transmission lines is gradually increasing. Galloping is a self-excited vibration with low frequency and large amplitude, and it moves vertically during galloping. dominant movement. The damage caused by galloping is also quite large. It will cause short circuit between lines and grounding. Suppressing dancing will bring serious economic losses to the country. [0003] As the voltage level increases, the transmission line will also use split conductors with different split numbers, an...

AI Technical Summary

Problems solved by technology

The damage caused by galloping is also quite large. It will cause short circuit between lines and grounding. Suppressing dancing will bring serious economic losses to the country

[0003] As the voltage level increases, the transmission line will also use split conductors with different split numbers, and the split conductors are more likely to gallop. Therefore, it is urgent to develop corresponding anti-galling devices for UHV and EHV lines. The existing phase-to-phase Although the spacer can reduce the degree of galloping to a certain extent, the spacer between the phases will also increase the shear damage of the wire and the wear of the hardware. In severe cases, phase-to-phase flashover will occur, which will damage the electrical performance

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