Active anti-galloping device of overhead power transmission line

A technology for overhead transmission lines and anti-dancing devices, which is applied in the direction of mechanical vibration damping devices, etc., can solve the problems of lack of control ability, application scope and effect limitations of anti-dancing devices.

Inactive Publication Date: 2014-04-30
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

These passive anti-dancing devices are limited i...

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  • Active anti-galloping device of overhead power transmission line
  • Active anti-galloping device of overhead power transmission line
  • Active anti-galloping device of overhead power transmission line

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[0030] The present invention provides an active anti-dancing device for overhead transmission lines, which will be described in detail below with reference to the accompanying drawings and specific examples.

[0031]The structure diagram of the active anti-dancing device for overhead transmission lines of the present invention is as follows: Figure 1-3 As shown, the energy transformer 3 is installed on the wire 1, the upper box 4 is connected to the fixing member 2 and installed on the wire 1, the upper box 4 is connected with the lower box 8 through bolts, and the motor 9 is installed on the lower box 8. The battery 7 is mounted on the inner wall of the lower box 8 by screws, the driving gear 10 is mounted on the output shaft of the motor 9, the driving gear 10 is meshed with the rack 14, and the rack 14 is mounted on the upper box 4, the lower On the first cylindrical rod and the second cylindrical rod of the box body 8, a T-shaped groove is opened at the corresponding posi...

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Abstract

The invention relates to an active anti-galloping device of an overhead power transmission line, and belongs to the technical field of power transmission line safety protection. According to the active anti-galloping device of the overhead power transmission line, a rack is adopted for transmitting rotation motions of a driving gear, and the design idea that one rotation motion is finally converted into two symmetrical rotation motions is realized. When galloping of the overhead power transmission line is restrained, the swing amplitude of pendulum bobs can be adjusted by combining the conductor galloping amplitude which is monitored in real time. After galloping acceleration signals caused by different wind speeds are monitored, conductor galloping acceleration signals are transmitted to a signal processing system through a conductor, the signals are processed by the signal processing system, and the processed signals are output to an anti-galloping control device through a conductor. The anti-galloping control device conducts recognition on the signals and outputs control instructions, the control instructions are transmitted into a stepping motor through a conductor and the stepping motor rotates by corresponding angles according to the control instructions so as to adjust the amplitude of the motions of the pendulum bobs.

Description

technical field [0001] The invention relates to an active anti-dancing device for overhead transmission lines, which belongs to the technical field of safety protection of transmission lines. Background technique [0002] In freezing rain, sleet or strong wind, the surface of the transmission line is easy to form a layer of uneven ice, resulting in a non-circular cross-section of the transmission line. When the horizontal wind blows on the transmission line, it will produce a certain Aerodynamics, under certain conditions, induces low-frequency (0.1-3Hz) and large-amplitude (up to 10m or more) self-excited vibrations in transmission lines. This vibration is called wire galloping. Due to the low frequency, large amplitude and long duration of wire galloping, the transmission line will generate a large amount of energy when it vibrates, resulting in the danger of broken bones and wires, and may even lead to the collapse of the tower. At the same time, in the process of wire v...

Claims

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Application Information

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IPC IPC(8): H02G7/14
Inventor 郭泽荣黄建花吴成智杨新龙芮静敏
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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