Anti-galloping Effect Research Of The Rotary Clamp Spacer In Bundled Transmission Lines

The biggest amplitude is the300times of the line’s diameter and the lowest frequency is0.15Hz during the line galloping. For the great amplitude and long time lasted, galloping may cause cascading of the transmission line and disruption of the power supply. Recently, the rotary clamp spacers have been more and more used in the grids of Shandong, Anhui and Jiangxi province, and this spacer will be wildly used in the high-voltage transmission lines in the future. However, the using time of the rotary clamp spacer is not so long that the study on the galloping of iced bundle conductor behaves great significance in power supply engineering.In this thesis, The definition and the cause of line galloping are introduced. The galloping mechanism of transmission lines is analysed with combination of research achievements at home and abroad. The differences between the bundled line and the single line are figured out and summarize the characteristics of the bundle line. The configuration and the anti-galloping mechanism of rotary clamp spacer are investigated. The models of transmission lines and conductor spacers are established by the software "ANSYS" and the aero-dynamic parameters are calculated and the final data are gained. At the end of the thesis, the anti-galloping effect of rotary clamp spacer is given. Moreover, the ice-coated line experiment held in Japan is simply introduced, and the anti-galloping effect of the rotary clamp spacer is acquired by the data analysis.