A study on measures against subspan oscillation by twin spacers in 345kV overhead transmission lines(II)

345kV 가공선로에서 진동발생 다발 소경간에 대한 진동저감 대책(II)

The oscillation is very dangerous in bundled transmission lines, especially 345kV 4 bundle transmission lines are very weak for subspan oscillations. In some cases, subspan oscillations are continuously occurred in the same subspan. In order to develop the control method of the above subspan oscillation, this paper suggests a method of applying twin spacers to the subspans. We have carried out some tests to analyze the oscillation phenomena after installing twin spacers on 34sky real lines, and we got a good effect for controling subspan oscillations.