The Analysis Of Mechanical Properties And Installation Design Of Anti-vibration Devices On Transmission Line

With the application across a wide range of the wide-span transmission line, aeolian vibration leads transmission line to shock in work. It damages the devices of the transmission line and yields short-circuit on-line. This problem has been attended by many scientists and engineers. After a series of the investigation and analysis for relevant information, the anti-vibration of the transmission conductor line and the mechanical performance of the anti-vibration devices are studied in this thesis.Starting the basic theory of aeolian vibration, mechanical model of the damper called FR-3 are established. The natural frequency of FR-3 is obtained by the analytical way. Simultaneously, the finite element method is used to simulate the natural frequency.Another important property of the damper is energy power. The present thesis investigates the influence of energy-consuming power caused by some structural parameters of the damper. As a result, some constructive suggestions for design of the damper are given. Moreover, an experimental method called vibration hammer test is used to find the natural frequency of the damper FR-3. In the tests, both the percussion method and resonance method are respectively adopted to collect the information of the vibration modes. Comparatively, the resonance method is better than the percussion method to gain the accurate natural frequency. Furthermore, in the measurement of resonance method there have two methods - constant displacement method and constant velocity method, and the later is better than the former.Finally, the type selection, number and installed location of the anti-vibration devices on the transmission conductor line are discussed in detail.