Rotating spacer anti-galloping efficiency evaluation method

Abstract

Firstly, the invention adopts a numerical method tosimulate the icing distribution of a twistable sub-conductor connected with a rotating wire clamp along a gear; and then analyzes the aerodynamic characteristics of the section of the ice-coated split conductor clamped by the rotating spacer by using fluid mechanics software. In conductor galloping simulation, conductor aerodynamic characteristic changes caused by conductor icing changes along a gear are considered, and based on ABAQUS finite element software, galloping responses of split conductors provided with rotating spacers of different configuration schemes are subjected to numerical simulation; galloping characteristics such as wire displacement time history, motion trail, vibration amplitude and wire tension are extracted to evaluate the anti-galloping efficiency of different configuration schemes, so that the optimal configuration scheme of the rotating spacer is obtained. Compared with the prior art, in the anti-galloping efficiency evaluation process of the rotating spacer, the icing change of the lead along the gear and the caused pneumatic characteristic change of the lead are considered.

Description

technical field [0001] The invention belongs to the technical field of power transmission, and more specifically relates to a method for evaluating the anti-galling performance of a rotary spacer. Background technique [0002] Rotary spacers have been used in the prevention and control of galloping of split conductors. However, due to the short application time, there is still a lack of research on its anti-galling performance and configuration schemes, and an effective anti-galling performance evaluation mechanism has not yet been formed. The anti-galling mechanism of the rotary spacer is directly based on the necessary condition for the formation of galloping, that is, reducing the degree of uneven icing on the conductors. The rotary spacer design part of the wire clamp to be able to rotate freely or within a certain angle range. [0003] Generally, among the N clamps, there are N / 2 clamps that can rotate freely. For example, for an eight-split spacer, there are 4 clamps...

AI Technical Summary

Problems solved by technology

[0002] Rotary spacers have been used in the prevention and control of galloping of split conductors, but due to the short application time, there is still a lack of research on its anti-galling performance and configuration schemes, and an effective anti-galling performance evaluation mechanism has not yet been formed.

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