A control method of line anti-vibration system with adjustable resonant frequency

Abstract

The invention discloses a control method for a circuit anti-vibration system capable of adjusting resonant frequency, relates to the control method for circuit anti-vibration systems and aims at solving the problems that the self-resonant frequency of an existing antivibrator can only be matched with the vibrational frequencies of a few electric transmission lines and can not be matched with the vibrational frequencies of most electric transmission lines, and the defect lead to the fact that the resonant frequency of overhead transmission lines is high. According to the technical scheme, the method comprises the following steps including the first step that when the circuit anti-vibration system is turned on, A1 and A2 are received, if A1 is larger than A2, then the second step is executed; if A1 is smaller than A2, then the third step is executed; if A1 is equal to A2, then the fourth step is executed; the second step that the lengths of a first steel strand and a second steel strand are each prolonged by d; if A1 is larger than A2, then the second step is executed; if A1 is smaller than or equal to A2, then the fourth step is executed; the third step that the ds are shortened respectively; if A1 is smaller than A2, then the third step is executed; if A1 is larger than or equal to A2, then the fourth step is executed; the fourth step that the voltage value is checked, and when the voltage value is smaller than or equal to a set value, then the control method is finished. The control method for the circuit anti-vibration system capable of adjusting the resonant frequency is suitable for being used in the power transmission field.

Description

technical field

[0001] The invention relates to a control method of a line anti-vibration system. Background technique

[0002] Breeze vibrations of transmission lines and wind vibrations of transmission towers often cause extremely harmful faults such as broken strands and broken wires of transmission lines, node connection damage of poles and towers, and many times caused serious large-scale power outages. There are three forms of wind-induced conductor vibration of overhead transmission lines: breeze vibration, sub-gap vibration and galloping, among which the breeze vibration of conductors occurs most frequently and has the greatest impact. The breeze vibration of the wire is due to the periodic "Karman vortex" excitation behind the wire when the wind blows through the wire vertically, which generates a force on the wire perpendicular to the wire and the wind direction, causing the wire to generate breeze vibration. If the line breeze vibration is not properly controlled...

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