A large-stroke dance suppression damper for transmission wires

Abstract

The invention belongs to the technical field of power systems, and relates to a large-stroke dance suppression damper for power transmission wires. The large-stroke damper for power transmission wires provided by the present invention cuts the magnetic induction lines generated between the magnets through the metal plate to generate damping force and realize the vibration reduction effect of the wire model; the main components are connected by elastic mechanisms, such as springs, and adjusted The stroke is large, which can suppress galloping with a large stroke, the vibration reduction effect is obvious, the model loss is small, and the durability is strong; the weight is light, the transportation is convenient, and it is easy to install and maintain; Effectively transmit the galloping vibration of the wire; the lower end of the large-stroke dance suppression damper of the transmission wire is designed with an inverted bowl-shaped anti-snake device to prevent small animals from climbing up along the lead wire and causing line safety accidents; the invention is novel in design and unique in use. Wide range, good promotion and application value and economic benefits.

Description

technical field [0001] The invention belongs to the technical field of power systems, and relates to a large-stroke dance suppression damper for power transmission wires. Background technique [0002] Galloping of transmission wires is extremely harmful to transmission lines, and it is easy to cause mixed line short circuit, flashover trip, slippage of hanging insulator clamps, wear of line fittings, breakage of spacer bars, separation of drain wires and jumper strings, etc. It is a necessary condition for galloping that the total damping ratio of the conductor is less than zero. Therefore, increasing the damping ratio of the conductor structure will largely suppress the galloping of the ice-coated conductor, prolong the dancing time and increase the dancing wind speed. [0003] Although the traditional detuned pendulum and double pendulum anti-dancing device have played a good anti-dancing effect on single conductors, the suppression of galloping on multi-split lines is not...

AI Technical Summary

Problems solved by technology

[0003] Although the traditional detuned pendulum and double pendulum anti-dancing device have played a good anti-dancing effect on single conductors, the suppression of galloping on multi-split lines is not ideal. Due to problems such as stress concentration at the connection of spacer rods, problems such as fittings and insulator strings are prone to damage due to tension, causing a series of problems

Using a damper to suppress the galloping of the transmission wire is a common means of vibration reduction. For example, installing the damper on the interphase spacer or the split wire sub-spacer can suppress the galloping of the wire to a certain extent, but because the stroke is short , the damping ratio is small, the kinetic energy consumed is less, and the dance suppression effect is relatively limited

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