A control method and system for a wire nonlinear vibration controller

Abstract

The invention relates to a control method and system for a nonlinear vibration controller of a wire. The output displacement is determined based on the external excitation of the transmission wire; the external excitation and the output displacement are input into the pre-established nonlinear vibration controller of the wire to obtain the wire The amplitude of the control force required for anti-vibration; according to the amplitude of the control force, the preset frequency and the pre-established actuator, the feedback external excitation is output to the conductor; based on the feedback external excitation force, the conductor is realized through power flow propagation Control of nonlinear vibration controllers. The wire nonlinear vibration controller based on the power flow theory of the present invention realizes active defense against wind-induced vibration disasters of transmission lines, improves the ability of transmission lines to resist natural disasters, ensures safe operation of transmission lines, and improves power supply reliability of power grids.

Description

technical field [0001] The invention relates to anti-vibration and anti-dancing technology for conductors of overhead transmission lines, in particular to a control method and system for a nonlinear vibration controller of conductors. Background technique [0002] Wind-induced vibration of conductors has become a major form of disaster that endangers the safe and stable operation of transmission lines. Every year, it poses a huge threat to the safe and stable operation of the line. Typical conductor wind-induced vibration phenomena include breeze vibration, galloping and sub-gap oscillation. Only for the galloping phenomenon of conductors, statistics show that since 1957, more than 1,000 lines of China’s State Grid have galloped more than 1,200 times, of which more than 700 lines have galloping trips, and there are also a large number of ground wire damage and broken strands. Broken wires, dropped insulators, damaged fittings, loose and dropped tower bolts, damaged tower m...

AI Technical Summary

Problems solved by technology

Improving the ability of transmission lines to resist natural disasters is the main link to improve their safety and stability. Wind-induced vibration protection of conductors is an important part of it. It is relatively limited, and it is still unable to realize disaster perception and active defense capabilities. Although disaster prevention costs have been invested heavily in recent years, the effect of disaster prevention and control has been limited to a certain extent.

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