Control method for nonlinear vibration controller of transmission lines and system thereof

Abstract

The invention relates to a control method for nonlinear vibration controller of transmission lines and a system thereof. The method comprises the following steps: determining an output displacement according to the external excitation of a transmission line; inputting the external excitation and the output displacement into a pre-prepared nonlinear vibration controller of transmission lines to obtain a control force amplitude required for vibration prevention of the transmission line; outputting a feedback external excitation to the transmission line according to the control force amplitude, apreset frequency, and a pre-prepared actuator; and controlling the nonlinear vibration controller of transmission lines by power flow transmission according to the feedback external excitation force.According to the power flow theory-based nonlinear vibration controller of transmission lines, the active prevention of wind-induced vibration disasters of transmission lines can be realized; the ability of transmission lines to resist natural disasters can be enhanced; the safety of transmission lines can be ensured; and the reliability of power supply can be improved.

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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